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vue2/dist/vue.common.js

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[build] 1.0.15
2016-01-19 03:43:43 +08:00
/*!
* Vue.js v1.0.15
* (c) 2016 Evan You
* Released under the MIT License.
*/
'use strict';
function set(obj, key, val) {
if (hasOwn(obj, key)) {
obj[key] = val;
return;
}
if (obj._isVue) {
set(obj._data, key, val);
return;
}
var ob = obj.__ob__;
if (!ob) {
obj[key] = val;
return;
}
ob.convert(key, val);
ob.dep.notify();
if (ob.vms) {
var i = ob.vms.length;
while (i--) {
var vm = ob.vms[i];
vm._proxy(key);
vm._digest();
}
}
return val;
}
/**
* Delete a property and trigger change if necessary.
*
* @param {Object} obj
* @param {String} key
*/
function del(obj, key) {
if (!hasOwn(obj, key)) {
return;
}
delete obj[key];
var ob = obj.__ob__;
if (!ob) {
return;
}
ob.dep.notify();
if (ob.vms) {
var i = ob.vms.length;
while (i--) {
var vm = ob.vms[i];
vm._unproxy(key);
vm._digest();
}
}
}
var hasOwnProperty = Object.prototype.hasOwnProperty;
/**
* Check whether the object has the property.
*
* @param {Object} obj
* @param {String} key
* @return {Boolean}
*/
function hasOwn(obj, key) {
return hasOwnProperty.call(obj, key);
}
/**
* Check if an expression is a literal value.
*
* @param {String} exp
* @return {Boolean}
*/
var literalValueRE = /^\s?(true|false|[\d\.]+|'[^']*'|"[^"]*")\s?$/;
function isLiteral(exp) {
return literalValueRE.test(exp);
}
/**
* Check if a string starts with $ or _
*
* @param {String} str
* @return {Boolean}
*/
function isReserved(str) {
var c = (str + '').charCodeAt(0);
return c === 0x24 || c === 0x5F;
}
/**
* Guard text output, make sure undefined outputs
* empty string
*
* @param {*} value
* @return {String}
*/
function _toString(value) {
return value == null ? '' : value.toString();
}
/**
* Check and convert possible numeric strings to numbers
* before setting back to data
*
* @param {*} value
* @return {*|Number}
*/
function toNumber(value) {
if (typeof value !== 'string') {
return value;
} else {
var parsed = Number(value);
return isNaN(parsed) ? value : parsed;
}
}
/**
* Convert string boolean literals into real booleans.
*
* @param {*} value
* @return {*|Boolean}
*/
function toBoolean(value) {
return value === 'true' ? true : value === 'false' ? false : value;
}
/**
* Strip quotes from a string
*
* @param {String} str
* @return {String | false}
*/
function stripQuotes(str) {
var a = str.charCodeAt(0);
var b = str.charCodeAt(str.length - 1);
return a === b && (a === 0x22 || a === 0x27) ? str.slice(1, -1) : str;
}
/**
* Camelize a hyphen-delmited string.
*
* @param {String} str
* @return {String}
*/
var camelizeRE = /-(\w)/g;
function camelize(str) {
return str.replace(camelizeRE, toUpper);
}
function toUpper(_, c) {
return c ? c.toUpperCase() : '';
}
/**
* Hyphenate a camelCase string.
*
* @param {String} str
* @return {String}
*/
var hyphenateRE = /([a-z\d])([A-Z])/g;
function hyphenate(str) {
return str.replace(hyphenateRE, '$1-$2').toLowerCase();
}
/**
* Converts hyphen/underscore/slash delimitered names into
* camelized classNames.
*
* e.g. my-component => MyComponent
* some_else => SomeElse
* some/comp => SomeComp
*
* @param {String} str
* @return {String}
*/
var classifyRE = /(?:^|[-_\/])(\w)/g;
function classify(str) {
return str.replace(classifyRE, toUpper);
}
/**
* Simple bind, faster than native
*
* @param {Function} fn
* @param {Object} ctx
* @return {Function}
*/
function bind$1(fn, ctx) {
return function (a) {
var l = arguments.length;
return l ? l > 1 ? fn.apply(ctx, arguments) : fn.call(ctx, a) : fn.call(ctx);
};
}
/**
* Convert an Array-like object to a real Array.
*
* @param {Array-like} list
* @param {Number} [start] - start index
* @return {Array}
*/
function toArray(list, start) {
start = start || 0;
var i = list.length - start;
var ret = new Array(i);
while (i--) {
ret[i] = list[i + start];
}
return ret;
}
/**
* Mix properties into target object.
*
* @param {Object} to
* @param {Object} from
*/
function extend(to, from) {
var keys = Object.keys(from);
var i = keys.length;
while (i--) {
to[keys[i]] = from[keys[i]];
}
return to;
}
/**
* Quick object check - this is primarily used to tell
* Objects from primitive values when we know the value
* is a JSON-compliant type.
*
* @param {*} obj
* @return {Boolean}
*/
function isObject(obj) {
return obj !== null && typeof obj === 'object';
}
/**
* Strict object type check. Only returns true
* for plain JavaScript objects.
*
* @param {*} obj
* @return {Boolean}
*/
var toString = Object.prototype.toString;
var OBJECT_STRING = '[object Object]';
function isPlainObject(obj) {
return toString.call(obj) === OBJECT_STRING;
}
/**
* Array type check.
*
* @param {*} obj
* @return {Boolean}
*/
var isArray = Array.isArray;
/**
* Define a non-enumerable property
*
* @param {Object} obj
* @param {String} key
* @param {*} val
* @param {Boolean} [enumerable]
*/
function def(obj, key, val, enumerable) {
Object.defineProperty(obj, key, {
value: val,
enumerable: !!enumerable,
writable: true,
configurable: true
});
}
/**
* Debounce a function so it only gets called after the
* input stops arriving after the given wait period.
*
* @param {Function} func
* @param {Number} wait
* @return {Function} - the debounced function
*/
function _debounce(func, wait) {
var timeout, args, context, timestamp, result;
var later = function later() {
var last = Date.now() - timestamp;
if (last < wait && last >= 0) {
timeout = setTimeout(later, wait - last);
} else {
timeout = null;
result = func.apply(context, args);
if (!timeout) context = args = null;
}
};
return function () {
context = this;
args = arguments;
timestamp = Date.now();
if (!timeout) {
timeout = setTimeout(later, wait);
}
return result;
};
}
/**
* Manual indexOf because it's slightly faster than
* native.
*
* @param {Array} arr
* @param {*} obj
*/
function indexOf(arr, obj) {
var i = arr.length;
while (i--) {
if (arr[i] === obj) return i;
}
return -1;
}
/**
* Make a cancellable version of an async callback.
*
* @param {Function} fn
* @return {Function}
*/
function cancellable(fn) {
var cb = function cb() {
if (!cb.cancelled) {
return fn.apply(this, arguments);
}
};
cb.cancel = function () {
cb.cancelled = true;
};
return cb;
}
/**
* Check if two values are loosely equal - that is,
* if they are plain objects, do they have the same shape?
*
* @param {*} a
* @param {*} b
* @return {Boolean}
*/
function looseEqual(a, b) {
/* eslint-disable eqeqeq */
return a == b || (isObject(a) && isObject(b) ? JSON.stringify(a) === JSON.stringify(b) : false);
/* eslint-enable eqeqeq */
}
var hasProto = ('__proto__' in {});
// Browser environment sniffing
var inBrowser = typeof window !== 'undefined' && Object.prototype.toString.call(window) !== '[object Object]';
var isIE9 = inBrowser && navigator.userAgent.toLowerCase().indexOf('msie 9.0') > 0;
var isAndroid = inBrowser && navigator.userAgent.toLowerCase().indexOf('android') > 0;
var transitionProp = undefined;
var transitionEndEvent = undefined;
var animationProp = undefined;
var animationEndEvent = undefined;
// Transition property/event sniffing
if (inBrowser && !isIE9) {
var isWebkitTrans = window.ontransitionend === undefined && window.onwebkittransitionend !== undefined;
var isWebkitAnim = window.onanimationend === undefined && window.onwebkitanimationend !== undefined;
transitionProp = isWebkitTrans ? 'WebkitTransition' : 'transition';
transitionEndEvent = isWebkitTrans ? 'webkitTransitionEnd' : 'transitionend';
animationProp = isWebkitAnim ? 'WebkitAnimation' : 'animation';
animationEndEvent = isWebkitAnim ? 'webkitAnimationEnd' : 'animationend';
}
/**
* Defer a task to execute it asynchronously. Ideally this
* should be executed as a microtask, so we leverage
* MutationObserver if it's available, and fallback to
* setTimeout(0).
*
* @param {Function} cb
* @param {Object} ctx
*/
var nextTick = (function () {
var callbacks = [];
var pending = false;
var timerFunc;
function nextTickHandler() {
pending = false;
var copies = callbacks.slice(0);
callbacks = [];
for (var i = 0; i < copies.length; i++) {
copies[i]();
}
}
/* istanbul ignore if */
if (typeof MutationObserver !== 'undefined') {
var counter = 1;
var observer = new MutationObserver(nextTickHandler);
var textNode = document.createTextNode(counter);
observer.observe(textNode, {
characterData: true
});
timerFunc = function () {
counter = (counter + 1) % 2;
textNode.data = counter;
};
} else {
timerFunc = setTimeout;
}
return function (cb, ctx) {
var func = ctx ? function () {
cb.call(ctx);
} : cb;
callbacks.push(func);
if (pending) return;
pending = true;
timerFunc(nextTickHandler, 0);
};
})();
function Cache(limit) {
this.size = 0;
this.limit = limit;
this.head = this.tail = undefined;
this._keymap = Object.create(null);
}
var p = Cache.prototype;
/**
* Put <value> into the cache associated with <key>.
* Returns the entry which was removed to make room for
* the new entry. Otherwise undefined is returned.
* (i.e. if there was enough room already).
*
* @param {String} key
* @param {*} value
* @return {Entry|undefined}
*/
p.put = function (key, value) {
var removed;
if (this.size === this.limit) {
removed = this.shift();
}
var entry = this.get(key, true);
if (!entry) {
entry = {
key: key
};
this._keymap[key] = entry;
if (this.tail) {
this.tail.newer = entry;
entry.older = this.tail;
} else {
this.head = entry;
}
this.tail = entry;
this.size++;
}
entry.value = value;
return removed;
};
/**
* Purge the least recently used (oldest) entry from the
* cache. Returns the removed entry or undefined if the
* cache was empty.
*/
p.shift = function () {
var entry = this.head;
if (entry) {
this.head = this.head.newer;
this.head.older = undefined;
entry.newer = entry.older = undefined;
this._keymap[entry.key] = undefined;
this.size--;
}
return entry;
};
/**
* Get and register recent use of <key>. Returns the value
* associated with <key> or undefined if not in cache.
*
* @param {String} key
* @param {Boolean} returnEntry
* @return {Entry|*}
*/
p.get = function (key, returnEntry) {
var entry = this._keymap[key];
if (entry === undefined) return;
if (entry === this.tail) {
return returnEntry ? entry : entry.value;
}
// HEAD--------------TAIL
// <.older .newer>
// <--- add direction --
// A B C <D> E
if (entry.newer) {
if (entry === this.head) {
this.head = entry.newer;
}
entry.newer.older = entry.older; // C <-- E.
}
if (entry.older) {
entry.older.newer = entry.newer; // C. --> E
}
entry.newer = undefined; // D --x
entry.older = this.tail; // D. --> E
if (this.tail) {
this.tail.newer = entry; // E. <-- D
}
this.tail = entry;
return returnEntry ? entry : entry.value;
};
var cache$1 = new Cache(1000);
var filterTokenRE = /[^\s'"]+|'[^']*'|"[^"]*"/g;
var reservedArgRE = /^in$|^-?\d+/;
/**
* Parser state
*/
var str;
var dir;
var c;
var prev;
var i;
var l;
var lastFilterIndex;
var inSingle;
var inDouble;
var curly;
var square;
var paren;
/**
* Push a filter to the current directive object
*/
function pushFilter() {
var exp = str.slice(lastFilterIndex, i).trim();
var filter;
if (exp) {
filter = {};
var tokens = exp.match(filterTokenRE);
filter.name = tokens[0];
if (tokens.length > 1) {
filter.args = tokens.slice(1).map(processFilterArg);
}
}
if (filter) {
(dir.filters = dir.filters || []).push(filter);
}
lastFilterIndex = i + 1;
}
/**
* Check if an argument is dynamic and strip quotes.
*
* @param {String} arg
* @return {Object}
*/
function processFilterArg(arg) {
if (reservedArgRE.test(arg)) {
return {
value: toNumber(arg),
dynamic: false
};
} else {
var stripped = stripQuotes(arg);
var dynamic = stripped === arg;
return {
value: dynamic ? arg : stripped,
dynamic: dynamic
};
}
}
/**
* Parse a directive value and extract the expression
* and its filters into a descriptor.
*
* Example:
*
* "a + 1 | uppercase" will yield:
* {
* expression: 'a + 1',
* filters: [
* { name: 'uppercase', args: null }
* ]
* }
*
* @param {String} str
* @return {Object}
*/
function parseDirective(s) {
var hit = cache$1.get(s);
if (hit) {
return hit;
}
// reset parser state
str = s;
inSingle = inDouble = false;
curly = square = paren = 0;
lastFilterIndex = 0;
dir = {};
for (i = 0, l = str.length; i < l; i++) {
prev = c;
c = str.charCodeAt(i);
if (inSingle) {
// check single quote
if (c === 0x27 && prev !== 0x5C) inSingle = !inSingle;
} else if (inDouble) {
// check double quote
if (c === 0x22 && prev !== 0x5C) inDouble = !inDouble;
} else if (c === 0x7C && // pipe
str.charCodeAt(i + 1) !== 0x7C && str.charCodeAt(i - 1) !== 0x7C) {
if (dir.expression == null) {
// first filter, end of expression
lastFilterIndex = i + 1;
dir.expression = str.slice(0, i).trim();
} else {
// already has filter
pushFilter();
}
} else {
switch (c) {
case 0x22:
inDouble = true;break; // "
case 0x27:
inSingle = true;break; // '
case 0x28:
paren++;break; // (
case 0x29:
paren--;break; // )
case 0x5B:
square++;break; // [
case 0x5D:
square--;break; // ]
case 0x7B:
curly++;break; // {
case 0x7D:
curly--;break; // }
}
}
}
if (dir.expression == null) {
dir.expression = str.slice(0, i).trim();
} else if (lastFilterIndex !== 0) {
pushFilter();
}
cache$1.put(s, dir);
return dir;
}
var directive = Object.freeze({
parseDirective: parseDirective
});
var regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g;
var cache = undefined;
var tagRE = undefined;
var htmlRE = undefined;
/**
* Escape a string so it can be used in a RegExp
* constructor.
*
* @param {String} str
*/
function escapeRegex(str) {
return str.replace(regexEscapeRE, '\\$&');
}
function compileRegex() {
var open = escapeRegex(config.delimiters[0]);
var close = escapeRegex(config.delimiters[1]);
var unsafeOpen = escapeRegex(config.unsafeDelimiters[0]);
var unsafeClose = escapeRegex(config.unsafeDelimiters[1]);
tagRE = new RegExp(unsafeOpen + '(.+?)' + unsafeClose + '|' + open + '(.+?)' + close, 'g');
htmlRE = new RegExp('^' + unsafeOpen + '.*' + unsafeClose + '$');
// reset cache
cache = new Cache(1000);
}
/**
* Parse a template text string into an array of tokens.
*
* @param {String} text
* @return {Array<Object> | null}
* - {String} type
* - {String} value
* - {Boolean} [html]
* - {Boolean} [oneTime]
*/
function parseText(text) {
if (!cache) {
compileRegex();
}
var hit = cache.get(text);
if (hit) {
return hit;
}
text = text.replace(/\n/g, '');
if (!tagRE.test(text)) {
return null;
}
var tokens = [];
var lastIndex = tagRE.lastIndex = 0;
var match, index, html, value, first, oneTime;
/* eslint-disable no-cond-assign */
while (match = tagRE.exec(text)) {
/* eslint-enable no-cond-assign */
index = match.index;
// push text token
if (index > lastIndex) {
tokens.push({
value: text.slice(lastIndex, index)
});
}
// tag token
html = htmlRE.test(match[0]);
value = html ? match[1] : match[2];
first = value.charCodeAt(0);
oneTime = first === 42; // *
value = oneTime ? value.slice(1) : value;
tokens.push({
tag: true,
value: value.trim(),
html: html,
oneTime: oneTime
});
lastIndex = index + match[0].length;
}
if (lastIndex < text.length) {
tokens.push({
value: text.slice(lastIndex)
});
}
cache.put(text, tokens);
return tokens;
}
/**
* Format a list of tokens into an expression.
* e.g. tokens parsed from 'a {{b}} c' can be serialized
* into one single expression as '"a " + b + " c"'.
*
* @param {Array} tokens
* @param {Vue} [vm]
* @return {String}
*/
function tokensToExp(tokens, vm) {
if (tokens.length > 1) {
return tokens.map(function (token) {
return formatToken(token, vm);
}).join('+');
} else {
return formatToken(tokens[0], vm, true);
}
}
/**
* Format a single token.
*
* @param {Object} token
* @param {Vue} [vm]
* @param {Boolean} [single]
* @return {String}
*/
function formatToken(token, vm, single) {
return token.tag ? token.oneTime && vm ? '"' + vm.$eval(token.value) + '"' : inlineFilters(token.value, single) : '"' + token.value + '"';
}
/**
* For an attribute with multiple interpolation tags,
* e.g. attr="some-{{thing | filter}}", in order to combine
* the whole thing into a single watchable expression, we
* have to inline those filters. This function does exactly
* that. This is a bit hacky but it avoids heavy changes
* to directive parser and watcher mechanism.
*
* @param {String} exp
* @param {Boolean} single
* @return {String}
*/
var filterRE$1 = /[^|]\|[^|]/;
function inlineFilters(exp, single) {
if (!filterRE$1.test(exp)) {
return single ? exp : '(' + exp + ')';
} else {
var dir = parseDirective(exp);
if (!dir.filters) {
return '(' + exp + ')';
} else {
return 'this._applyFilters(' + dir.expression + // value
',null,' + // oldValue (null for read)
JSON.stringify(dir.filters) + // filter descriptors
',false)'; // write?
}
}
}
var text$1 = Object.freeze({
compileRegex: compileRegex,
parseText: parseText,
tokensToExp: tokensToExp
});
var delimiters = ['{{', '}}'];
var unsafeDelimiters = ['{{{', '}}}'];
var config = Object.defineProperties({
/**
* Whether to print debug messages.
* Also enables stack trace for warnings.
*
* @type {Boolean}
*/
debug: false,
/**
* Whether to suppress warnings.
*
* @type {Boolean}
*/
silent: false,
/**
* Whether to use async rendering.
*/
async: true,
/**
* Whether to warn against errors caught when evaluating
* expressions.
*/
warnExpressionErrors: true,
/**
* Whether or not to handle fully object properties which
* are already backed by getters and seters. Depending on
* use case and environment, this might introduce non-neglible
* performance penalties.
*/
convertAllProperties: false,
/**
* Internal flag to indicate the delimiters have been
* changed.
*
* @type {Boolean}
*/
_delimitersChanged: true,
/**
* List of asset types that a component can own.
*
* @type {Array}
*/
_assetTypes: ['component', 'directive', 'elementDirective', 'filter', 'transition', 'partial'],
/**
* prop binding modes
*/
_propBindingModes: {
ONE_WAY: 0,
TWO_WAY: 1,
ONE_TIME: 2
},
/**
* Max circular updates allowed in a batcher flush cycle.
*/
_maxUpdateCount: 100
}, {
delimiters: { /**
* Interpolation delimiters. Changing these would trigger
* the text parser to re-compile the regular expressions.
*
* @type {Array<String>}
*/
get: function get() {
return delimiters;
},
set: function set(val) {
delimiters = val;
compileRegex();
},
configurable: true,
enumerable: true
},
unsafeDelimiters: {
get: function get() {
return unsafeDelimiters;
},
set: function set(val) {
unsafeDelimiters = val;
compileRegex();
},
configurable: true,
enumerable: true
}
});
var warn = undefined;
if (process.env.NODE_ENV !== 'production') {
(function () {
var hasConsole = typeof console !== 'undefined';
warn = function (msg, e) {
if (hasConsole && (!config.silent || config.debug)) {
console.warn('[Vue warn]: ' + msg);
/* istanbul ignore if */
if (config.debug) {
if (e) {
throw e;
} else {
console.warn(new Error('Warning Stack Trace').stack);
}
}
}
};
})();
}
/**
* Append with transition.
*
* @param {Element} el
* @param {Element} target
* @param {Vue} vm
* @param {Function} [cb]
*/
function appendWithTransition(el, target, vm, cb) {
applyTransition(el, 1, function () {
target.appendChild(el);
}, vm, cb);
}
/**
* InsertBefore with transition.
*
* @param {Element} el
* @param {Element} target
* @param {Vue} vm
* @param {Function} [cb]
*/
function beforeWithTransition(el, target, vm, cb) {
applyTransition(el, 1, function () {
before(el, target);
}, vm, cb);
}
/**
* Remove with transition.
*
* @param {Element} el
* @param {Vue} vm
* @param {Function} [cb]
*/
function removeWithTransition(el, vm, cb) {
applyTransition(el, -1, function () {
remove(el);
}, vm, cb);
}
/**
* Apply transitions with an operation callback.
*
* @param {Element} el
* @param {Number} direction
* 1: enter
* -1: leave
* @param {Function} op - the actual DOM operation
* @param {Vue} vm
* @param {Function} [cb]
*/
function applyTransition(el, direction, op, vm, cb) {
var transition = el.__v_trans;
if (!transition ||
// skip if there are no js hooks and CSS transition is
// not supported
!transition.hooks && !transitionEndEvent ||
// skip transitions for initial compile
!vm._isCompiled ||
// if the vm is being manipulated by a parent directive
// during the parent's compilation phase, skip the
// animation.
vm.$parent && !vm.$parent._isCompiled) {
op();
if (cb) cb();
return;
}
var action = direction > 0 ? 'enter' : 'leave';
transition[action](op, cb);
}
/**
* Query an element selector if it's not an element already.
*
* @param {String|Element} el
* @return {Element}
*/
function query(el) {
if (typeof el === 'string') {
var selector = el;
el = document.querySelector(el);
if (!el) {
process.env.NODE_ENV !== 'production' && warn('Cannot find element: ' + selector);
}
}
return el;
}
/**
* Check if a node is in the document.
* Note: document.documentElement.contains should work here
* but always returns false for comment nodes in phantomjs,
* making unit tests difficult. This is fixed by doing the
* contains() check on the node's parentNode instead of
* the node itself.
*
* @param {Node} node
* @return {Boolean}
*/
function inDoc(node) {
var doc = document.documentElement;
var parent = node && node.parentNode;
return doc === node || doc === parent || !!(parent && parent.nodeType === 1 && doc.contains(parent));
}
/**
* Get and remove an attribute from a node.
*
* @param {Node} node
* @param {String} _attr
*/
function getAttr(node, _attr) {
var val = node.getAttribute(_attr);
if (val !== null) {
node.removeAttribute(_attr);
}
return val;
}
/**
* Get an attribute with colon or v-bind: prefix.
*
* @param {Node} node
* @param {String} name
* @return {String|null}
*/
function getBindAttr(node, name) {
var val = getAttr(node, ':' + name);
if (val === null) {
val = getAttr(node, 'v-bind:' + name);
}
return val;
}
/**
* Check the presence of a bind attribute.
*
* @param {Node} node
* @param {String} name
* @return {Boolean}
*/
function hasBindAttr(node, name) {
return node.hasAttribute(name) || node.hasAttribute(':' + name) || node.hasAttribute('v-bind:' + name);
}
/**
* Insert el before target
*
* @param {Element} el
* @param {Element} target
*/
function before(el, target) {
target.parentNode.insertBefore(el, target);
}
/**
* Insert el after target
*
* @param {Element} el
* @param {Element} target
*/
function after(el, target) {
if (target.nextSibling) {
before(el, target.nextSibling);
} else {
target.parentNode.appendChild(el);
}
}
/**
* Remove el from DOM
*
* @param {Element} el
*/
function remove(el) {
el.parentNode.removeChild(el);
}
/**
* Prepend el to target
*
* @param {Element} el
* @param {Element} target
*/
function prepend(el, target) {
if (target.firstChild) {
before(el, target.firstChild);
} else {
target.appendChild(el);
}
}
/**
* Replace target with el
*
* @param {Element} target
* @param {Element} el
*/
function replace(target, el) {
var parent = target.parentNode;
if (parent) {
parent.replaceChild(el, target);
}
}
/**
* Add event listener shorthand.
*
* @param {Element} el
* @param {String} event
* @param {Function} cb
*/
function on$1(el, event, cb) {
el.addEventListener(event, cb);
}
/**
* Remove event listener shorthand.
*
* @param {Element} el
* @param {String} event
* @param {Function} cb
*/
function off(el, event, cb) {
el.removeEventListener(event, cb);
}
/**
* In IE9, setAttribute('class') will result in empty class
* if the element also has the :class attribute; However in
* PhantomJS, setting `className` does not work on SVG elements...
* So we have to do a conditional check here.
*
* @param {Element} el
* @param {String} cls
*/
function setClass(el, cls) {
/* istanbul ignore if */
if (isIE9 && !(el instanceof SVGElement)) {
el.className = cls;
} else {
el.setAttribute('class', cls);
}
}
/**
* Add class with compatibility for IE & SVG
*
* @param {Element} el
* @param {String} cls
*/
function addClass(el, cls) {
if (el.classList) {
el.classList.add(cls);
} else {
var cur = ' ' + (el.getAttribute('class') || '') + ' ';
if (cur.indexOf(' ' + cls + ' ') < 0) {
setClass(el, (cur + cls).trim());
}
}
}
/**
* Remove class with compatibility for IE & SVG
*
* @param {Element} el
* @param {String} cls
*/
function removeClass(el, cls) {
if (el.classList) {
el.classList.remove(cls);
} else {
var cur = ' ' + (el.getAttribute('class') || '') + ' ';
var tar = ' ' + cls + ' ';
while (cur.indexOf(tar) >= 0) {
cur = cur.replace(tar, ' ');
}
setClass(el, cur.trim());
}
if (!el.className) {
el.removeAttribute('class');
}
}
/**
* Extract raw content inside an element into a temporary
* container div
*
* @param {Element} el
* @param {Boolean} asFragment
* @return {Element}
*/
function extractContent(el, asFragment) {
var child;
var rawContent;
/* istanbul ignore if */
if (isTemplate(el) && el.content instanceof DocumentFragment) {
el = el.content;
}
if (el.hasChildNodes()) {
trimNode(el);
rawContent = asFragment ? document.createDocumentFragment() : document.createElement('div');
/* eslint-disable no-cond-assign */
while (child = el.firstChild) {
/* eslint-enable no-cond-assign */
rawContent.appendChild(child);
}
}
return rawContent;
}
/**
* Trim possible empty head/tail textNodes inside a parent.
*
* @param {Node} node
*/
function trimNode(node) {
trim(node, node.firstChild);
trim(node, node.lastChild);
}
function trim(parent, node) {
if (node && node.nodeType === 3 && !node.data.trim()) {
parent.removeChild(node);
}
}
/**
* Check if an element is a template tag.
* Note if the template appears inside an SVG its tagName
* will be in lowercase.
*
* @param {Element} el
*/
function isTemplate(el) {
return el.tagName && el.tagName.toLowerCase() === 'template';
}
/**
* Create an "anchor" for performing dom insertion/removals.
* This is used in a number of scenarios:
* - fragment instance
* - v-html
* - v-if
* - v-for
* - component
*
* @param {String} content
* @param {Boolean} persist - IE trashes empty textNodes on
* cloneNode(true), so in certain
* cases the anchor needs to be
* non-empty to be persisted in
* templates.
* @return {Comment|Text}
*/
function createAnchor(content, persist) {
var anchor = config.debug ? document.createComment(content) : document.createTextNode(persist ? ' ' : '');
anchor.__vue_anchor = true;
return anchor;
}
/**
* Find a component ref attribute that starts with $.
*
* @param {Element} node
* @return {String|undefined}
*/
var refRE = /^v-ref:/;
function findRef(node) {
if (node.hasAttributes()) {
var attrs = node.attributes;
for (var i = 0, l = attrs.length; i < l; i++) {
var name = attrs[i].name;
if (refRE.test(name)) {
return camelize(name.replace(refRE, ''));
}
}
}
}
/**
* Map a function to a range of nodes .
*
* @param {Node} node
* @param {Node} end
* @param {Function} op
*/
function mapNodeRange(node, end, op) {
var next;
while (node !== end) {
next = node.nextSibling;
op(node);
node = next;
}
op(end);
}
/**
* Remove a range of nodes with transition, store
* the nodes in a fragment with correct ordering,
* and call callback when done.
*
* @param {Node} start
* @param {Node} end
* @param {Vue} vm
* @param {DocumentFragment} frag
* @param {Function} cb
*/
function removeNodeRange(start, end, vm, frag, cb) {
var done = false;
var removed = 0;
var nodes = [];
mapNodeRange(start, end, function (node) {
if (node === end) done = true;
nodes.push(node);
removeWithTransition(node, vm, onRemoved);
});
function onRemoved() {
removed++;
if (done && removed >= nodes.length) {
for (var i = 0; i < nodes.length; i++) {
frag.appendChild(nodes[i]);
}
cb && cb();
}
}
}
var commonTagRE = /^(div|p|span|img|a|b|i|br|ul|ol|li|h1|h2|h3|h4|h5|h6|code|pre|table|th|td|tr|form|label|input|select|option|nav|article|section|header|footer)$/;
var reservedTagRE = /^(slot|partial|component)$/;
/**
* Check if an element is a component, if yes return its
* component id.
*
* @param {Element} el
* @param {Object} options
* @return {Object|undefined}
*/
function checkComponentAttr(el, options) {
var tag = el.tagName.toLowerCase();
var hasAttrs = el.hasAttributes();
if (!commonTagRE.test(tag) && !reservedTagRE.test(tag)) {
if (resolveAsset(options, 'components', tag)) {
return { id: tag };
} else {
var is = hasAttrs && getIsBinding(el);
if (is) {
return is;
} else if (process.env.NODE_ENV !== 'production') {
if (tag.indexOf('-') > -1 || /HTMLUnknownElement/.test(el.toString()) &&
// Chrome returns unknown for several HTML5 elements.
// https://code.google.com/p/chromium/issues/detail?id=540526
!/^(data|time|rtc|rb)$/.test(tag)) {
warn('Unknown custom element: <' + tag + '> - did you ' + 'register the component correctly?');
}
}
}
} else if (hasAttrs) {
return getIsBinding(el);
}
}
/**
* Get "is" binding from an element.
*
* @param {Element} el
* @return {Object|undefined}
*/
function getIsBinding(el) {
// dynamic syntax
var exp = getAttr(el, 'is');
if (exp != null) {
return { id: exp };
} else {
exp = getBindAttr(el, 'is');
if (exp != null) {
return { id: exp, dynamic: true };
}
}
}
/**
* Set a prop's initial value on a vm and its data object.
*
* @param {Vue} vm
* @param {Object} prop
* @param {*} value
*/
function initProp(vm, prop, value) {
var key = prop.path;
value = coerceProp(prop, value);
vm[key] = vm._data[key] = assertProp(prop, value) ? value : undefined;
}
/**
* Assert whether a prop is valid.
*
* @param {Object} prop
* @param {*} value
*/
function assertProp(prop, value) {
// if a prop is not provided and is not required,
// skip the check.
if (prop.raw === null && !prop.required) {
return true;
}
var options = prop.options;
var type = options.type;
var valid = true;
var expectedType;
if (type) {
if (type === String) {
expectedType = 'string';
valid = typeof value === expectedType;
} else if (type === Number) {
expectedType = 'number';
valid = typeof value === 'number';
} else if (type === Boolean) {
expectedType = 'boolean';
valid = typeof value === 'boolean';
} else if (type === Function) {
expectedType = 'function';
valid = typeof value === 'function';
} else if (type === Object) {
expectedType = 'object';
valid = isPlainObject(value);
} else if (type === Array) {
expectedType = 'array';
valid = isArray(value);
} else {
valid = value instanceof type;
}
}
if (!valid) {
process.env.NODE_ENV !== 'production' && warn('Invalid prop: type check failed for ' + prop.path + '="' + prop.raw + '".' + ' Expected ' + formatType(expectedType) + ', got ' + formatValue(value) + '.');
return false;
}
var validator = options.validator;
if (validator) {
if (!validator.call(null, value)) {
process.env.NODE_ENV !== 'production' && warn('Invalid prop: custom validator check failed for ' + prop.path + '="' + prop.raw + '"');
return false;
}
}
return true;
}
/**
* Force parsing value with coerce option.
*
* @param {*} value
* @param {Object} options
* @return {*}
*/
function coerceProp(prop, value) {
var coerce = prop.options.coerce;
if (!coerce) {
return value;
}
// coerce is a function
return coerce(value);
}
function formatType(val) {
return val ? val.charAt(0).toUpperCase() + val.slice(1) : 'custom type';
}
function formatValue(val) {
return Object.prototype.toString.call(val).slice(8, -1);
}
/**
* Option overwriting strategies are functions that handle
* how to merge a parent option value and a child option
* value into the final value.
*
* All strategy functions follow the same signature:
*
* @param {*} parentVal
* @param {*} childVal
* @param {Vue} [vm]
*/
var strats = config.optionMergeStrategies = Object.create(null);
/**
* Helper that recursively merges two data objects together.
*/
function mergeData(to, from) {
var key, toVal, fromVal;
for (key in from) {
toVal = to[key];
fromVal = from[key];
if (!hasOwn(to, key)) {
set(to, key, fromVal);
} else if (isObject(toVal) && isObject(fromVal)) {
mergeData(toVal, fromVal);
}
}
return to;
}
/**
* Data
*/
strats.data = function (parentVal, childVal, vm) {
if (!vm) {
// in a Vue.extend merge, both should be functions
if (!childVal) {
return parentVal;
}
if (typeof childVal !== 'function') {
process.env.NODE_ENV !== 'production' && warn('The "data" option should be a function ' + 'that returns a per-instance value in component ' + 'definitions.');
return parentVal;
}
if (!parentVal) {
return childVal;
}
// when parentVal & childVal are both present,
// we need to return a function that returns the
// merged result of both functions... no need to
// check if parentVal is a function here because
// it has to be a function to pass previous merges.
return function mergedDataFn() {
return mergeData(childVal.call(this), parentVal.call(this));
};
} else if (parentVal || childVal) {
return function mergedInstanceDataFn() {
// instance merge
var instanceData = typeof childVal === 'function' ? childVal.call(vm) : childVal;
var defaultData = typeof parentVal === 'function' ? parentVal.call(vm) : undefined;
if (instanceData) {
return mergeData(instanceData, defaultData);
} else {
return defaultData;
}
};
}
};
/**
* El
*/
strats.el = function (parentVal, childVal, vm) {
if (!vm && childVal && typeof childVal !== 'function') {
process.env.NODE_ENV !== 'production' && warn('The "el" option should be a function ' + 'that returns a per-instance value in component ' + 'definitions.');
return;
}
var ret = childVal || parentVal;
// invoke the element factory if this is instance merge
return vm && typeof ret === 'function' ? ret.call(vm) : ret;
};
/**
* Hooks and param attributes are merged as arrays.
*/
strats.init = strats.created = strats.ready = strats.attached = strats.detached = strats.beforeCompile = strats.compiled = strats.beforeDestroy = strats.destroyed = function (parentVal, childVal) {
return childVal ? parentVal ? parentVal.concat(childVal) : isArray(childVal) ? childVal : [childVal] : parentVal;
};
/**
* 0.11 deprecation warning
*/
strats.paramAttributes = function () {
/* istanbul ignore next */
process.env.NODE_ENV !== 'production' && warn('"paramAttributes" option has been deprecated in 0.12. ' + 'Use "props" instead.');
};
/**
* Assets
*
* When a vm is present (instance creation), we need to do
* a three-way merge between constructor options, instance
* options and parent options.
*/
function mergeAssets(parentVal, childVal) {
var res = Object.create(parentVal);
return childVal ? extend(res, guardArrayAssets(childVal)) : res;
}
config._assetTypes.forEach(function (type) {
strats[type + 's'] = mergeAssets;
});
/**
* Events & Watchers.
*
* Events & watchers hashes should not overwrite one
* another, so we merge them as arrays.
*/
strats.watch = strats.events = function (parentVal, childVal) {
if (!childVal) return parentVal;
if (!parentVal) return childVal;
var ret = {};
extend(ret, parentVal);
for (var key in childVal) {
var parent = ret[key];
var child = childVal[key];
if (parent && !isArray(parent)) {
parent = [parent];
}
ret[key] = parent ? parent.concat(child) : [child];
}
return ret;
};
/**
* Other object hashes.
*/
strats.props = strats.methods = strats.computed = function (parentVal, childVal) {
if (!childVal) return parentVal;
if (!parentVal) return childVal;
var ret = Object.create(null);
extend(ret, parentVal);
extend(ret, childVal);
return ret;
};
/**
* Default strategy.
*/
var defaultStrat = function defaultStrat(parentVal, childVal) {
return childVal === undefined ? parentVal : childVal;
};
/**
* Make sure component options get converted to actual
* constructors.
*
* @param {Object} options
*/
function guardComponents(options) {
if (options.components) {
var components = options.components = guardArrayAssets(options.components);
var def;
var ids = Object.keys(components);
for (var i = 0, l = ids.length; i < l; i++) {
var key = ids[i];
if (commonTagRE.test(key) || reservedTagRE.test(key)) {
process.env.NODE_ENV !== 'production' && warn('Do not use built-in or reserved HTML elements as component ' + 'id: ' + key);
continue;
}
def = components[key];
if (isPlainObject(def)) {
components[key] = Vue.extend(def);
}
}
}
}
/**
* Ensure all props option syntax are normalized into the
* Object-based format.
*
* @param {Object} options
*/
function guardProps(options) {
var props = options.props;
var i, val;
if (isArray(props)) {
options.props = {};
i = props.length;
while (i--) {
val = props[i];
if (typeof val === 'string') {
options.props[val] = null;
} else if (val.name) {
options.props[val.name] = val;
}
}
} else if (isPlainObject(props)) {
var keys = Object.keys(props);
i = keys.length;
while (i--) {
val = props[keys[i]];
if (typeof val === 'function') {
props[keys[i]] = { type: val };
}
}
}
}
/**
* Guard an Array-format assets option and converted it
* into the key-value Object format.
*
* @param {Object|Array} assets
* @return {Object}
*/
function guardArrayAssets(assets) {
if (isArray(assets)) {
var res = {};
var i = assets.length;
var asset;
while (i--) {
asset = assets[i];
var id = typeof asset === 'function' ? asset.options && asset.options.name || asset.id : asset.name || asset.id;
if (!id) {
process.env.NODE_ENV !== 'production' && warn('Array-syntax assets must provide a "name" or "id" field.');
} else {
res[id] = asset;
}
}
return res;
}
return assets;
}
/**
* Merge two option objects into a new one.
* Core utility used in both instantiation and inheritance.
*
* @param {Object} parent
* @param {Object} child
* @param {Vue} [vm] - if vm is present, indicates this is
* an instantiation merge.
*/
function mergeOptions(parent, child, vm) {
guardComponents(child);
guardProps(child);
var options = {};
var key;
if (child.mixins) {
for (var i = 0, l = child.mixins.length; i < l; i++) {
parent = mergeOptions(parent, child.mixins[i], vm);
}
}
for (key in parent) {
mergeField(key);
}
for (key in child) {
if (!hasOwn(parent, key)) {
mergeField(key);
}
}
function mergeField(key) {
var strat = strats[key] || defaultStrat;
options[key] = strat(parent[key], child[key], vm, key);
}
return options;
}
/**
* Resolve an asset.
* This function is used because child instances need access
* to assets defined in its ancestor chain.
*
* @param {Object} options
* @param {String} type
* @param {String} id
* @return {Object|Function}
*/
function resolveAsset(options, type, id) {
var assets = options[type];
var camelizedId;
return assets[id] ||
// camelCase ID
assets[camelizedId = camelize(id)] ||
// Pascal Case ID
assets[camelizedId.charAt(0).toUpperCase() + camelizedId.slice(1)];
}
/**
* Assert asset exists
*/
function assertAsset(val, type, id) {
if (!val) {
process.env.NODE_ENV !== 'production' && warn('Failed to resolve ' + type + ': ' + id);
}
}
var arrayProto = Array.prototype;
var arrayMethods = Object.create(arrayProto)
/**
* Intercept mutating methods and emit events
*/
;['push', 'pop', 'shift', 'unshift', 'splice', 'sort', 'reverse'].forEach(function (method) {
// cache original method
var original = arrayProto[method];
def(arrayMethods, method, function mutator() {
// avoid leaking arguments:
// http://jsperf.com/closure-with-arguments
var i = arguments.length;
var args = new Array(i);
while (i--) {
args[i] = arguments[i];
}
var result = original.apply(this, args);
var ob = this.__ob__;
var inserted;
switch (method) {
case 'push':
inserted = args;
break;
case 'unshift':
inserted = args;
break;
case 'splice':
inserted = args.slice(2);
break;
}
if (inserted) ob.observeArray(inserted);
// notify change
ob.dep.notify();
return result;
});
});
/**
* Swap the element at the given index with a new value
* and emits corresponding event.
*
* @param {Number} index
* @param {*} val
* @return {*} - replaced element
*/
def(arrayProto, '$set', function $set(index, val) {
if (index >= this.length) {
this.length = Number(index) + 1;
}
return this.splice(index, 1, val)[0];
});
/**
* Convenience method to remove the element at given index.
*
* @param {Number} index
* @param {*} val
*/
def(arrayProto, '$remove', function $remove(item) {
/* istanbul ignore if */
if (!this.length) return;
var index = indexOf(this, item);
if (index > -1) {
return this.splice(index, 1);
}
});
var uid$3 = 0;
/**
* A dep is an observable that can have multiple
* directives subscribing to it.
*
* @constructor
*/
function Dep() {
this.id = uid$3++;
this.subs = [];
}
// the current target watcher being evaluated.
// this is globally unique because there could be only one
// watcher being evaluated at any time.
Dep.target = null;
/**
* Add a directive subscriber.
*
* @param {Directive} sub
*/
Dep.prototype.addSub = function (sub) {
this.subs.push(sub);
};
/**
* Remove a directive subscriber.
*
* @param {Directive} sub
*/
Dep.prototype.removeSub = function (sub) {
this.subs.$remove(sub);
};
/**
* Add self as a dependency to the target watcher.
*/
Dep.prototype.depend = function () {
Dep.target.addDep(this);
};
/**
* Notify all subscribers of a new value.
*/
Dep.prototype.notify = function () {
// stablize the subscriber list first
var subs = toArray(this.subs);
for (var i = 0, l = subs.length; i < l; i++) {
subs[i].update();
}
};
var arrayKeys = Object.getOwnPropertyNames(arrayMethods);
/**
* Observer class that are attached to each observed
* object. Once attached, the observer converts target
* object's property keys into getter/setters that
* collect dependencies and dispatches updates.
*
* @param {Array|Object} value
* @constructor
*/
function Observer(value) {
this.value = value;
this.dep = new Dep();
def(value, '__ob__', this);
if (isArray(value)) {
var augment = hasProto ? protoAugment : copyAugment;
augment(value, arrayMethods, arrayKeys);
this.observeArray(value);
} else {
this.walk(value);
}
}
// Instance methods
/**
* Walk through each property and convert them into
* getter/setters. This method should only be called when
* value type is Object.
*
* @param {Object} obj
*/
Observer.prototype.walk = function (obj) {
var keys = Object.keys(obj);
for (var i = 0, l = keys.length; i < l; i++) {
this.convert(keys[i], obj[keys[i]]);
}
};
/**
* Observe a list of Array items.
*
* @param {Array} items
*/
Observer.prototype.observeArray = function (items) {
for (var i = 0, l = items.length; i < l; i++) {
observe(items[i]);
}
};
/**
* Convert a property into getter/setter so we can emit
* the events when the property is accessed/changed.
*
* @param {String} key
* @param {*} val
*/
Observer.prototype.convert = function (key, val) {
defineReactive(this.value, key, val);
};
/**
* Add an owner vm, so that when $set/$delete mutations
* happen we can notify owner vms to proxy the keys and
* digest the watchers. This is only called when the object
* is observed as an instance's root $data.
*
* @param {Vue} vm
*/
Observer.prototype.addVm = function (vm) {
(this.vms || (this.vms = [])).push(vm);
};
/**
* Remove an owner vm. This is called when the object is
* swapped out as an instance's $data object.
*
* @param {Vue} vm
*/
Observer.prototype.removeVm = function (vm) {
this.vms.$remove(vm);
};
// helpers
/**
* Augment an target Object or Array by intercepting
* the prototype chain using __proto__
*
* @param {Object|Array} target
* @param {Object} proto
*/
function protoAugment(target, src) {
target.__proto__ = src;
}
/**
* Augment an target Object or Array by defining
* hidden properties.
*
* @param {Object|Array} target
* @param {Object} proto
*/
function copyAugment(target, src, keys) {
for (var i = 0, l = keys.length; i < l; i++) {
var key = keys[i];
def(target, key, src[key]);
}
}
/**
* Attempt to create an observer instance for a value,
* returns the new observer if successfully observed,
* or the existing observer if the value already has one.
*
* @param {*} value
* @param {Vue} [vm]
* @return {Observer|undefined}
* @static
*/
function observe(value, vm) {
if (!value || typeof value !== 'object') {
return;
}
var ob;
if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
ob = value.__ob__;
} else if ((isArray(value) || isPlainObject(value)) && Object.isExtensible(value) && !value._isVue) {
ob = new Observer(value);
}
if (ob && vm) {
ob.addVm(vm);
}
return ob;
}
/**
* Define a reactive property on an Object.
*
* @param {Object} obj
* @param {String} key
* @param {*} val
*/
function defineReactive(obj, key, val) {
var dep = new Dep();
// cater for pre-defined getter/setters
var getter, setter;
if (config.convertAllProperties) {
var property = Object.getOwnPropertyDescriptor(obj, key);
if (property && property.configurable === false) {
return;
}
getter = property && property.get;
setter = property && property.set;
}
var childOb = observe(val);
Object.defineProperty(obj, key, {
enumerable: true,
configurable: true,
get: function reactiveGetter() {
var value = getter ? getter.call(obj) : val;
if (Dep.target) {
dep.depend();
if (childOb) {
childOb.dep.depend();
}
if (isArray(value)) {
for (var e, i = 0, l = value.length; i < l; i++) {
e = value[i];
e && e.__ob__ && e.__ob__.dep.depend();
}
}
}
return value;
},
set: function reactiveSetter(newVal) {
var value = getter ? getter.call(obj) : val;
if (newVal === value) {
return;
}
if (setter) {
setter.call(obj, newVal);
} else {
val = newVal;
}
childOb = observe(newVal);
dep.notify();
}
});
}
var util = Object.freeze({
defineReactive: defineReactive,
set: set,
del: del,
hasOwn: hasOwn,
isLiteral: isLiteral,
isReserved: isReserved,
_toString: _toString,
toNumber: toNumber,
toBoolean: toBoolean,
stripQuotes: stripQuotes,
camelize: camelize,
hyphenate: hyphenate,
classify: classify,
bind: bind$1,
toArray: toArray,
extend: extend,
isObject: isObject,
isPlainObject: isPlainObject,
def: def,
debounce: _debounce,
indexOf: indexOf,
cancellable: cancellable,
looseEqual: looseEqual,
isArray: isArray,
hasProto: hasProto,
inBrowser: inBrowser,
isIE9: isIE9,
isAndroid: isAndroid,
get transitionProp () { return transitionProp; },
get transitionEndEvent () { return transitionEndEvent; },
get animationProp () { return animationProp; },
get animationEndEvent () { return animationEndEvent; },
nextTick: nextTick,
query: query,
inDoc: inDoc,
getAttr: getAttr,
getBindAttr: getBindAttr,
hasBindAttr: hasBindAttr,
before: before,
after: after,
remove: remove,
prepend: prepend,
replace: replace,
on: on$1,
off: off,
setClass: setClass,
addClass: addClass,
removeClass: removeClass,
extractContent: extractContent,
trimNode: trimNode,
isTemplate: isTemplate,
createAnchor: createAnchor,
findRef: findRef,
mapNodeRange: mapNodeRange,
removeNodeRange: removeNodeRange,
mergeOptions: mergeOptions,
resolveAsset: resolveAsset,
assertAsset: assertAsset,
checkComponentAttr: checkComponentAttr,
initProp: initProp,
assertProp: assertProp,
coerceProp: coerceProp,
commonTagRE: commonTagRE,
reservedTagRE: reservedTagRE,
get warn () { return warn; }
});
var uid = 0;
function initMixin (Vue) {
/**
* The main init sequence. This is called for every
* instance, including ones that are created from extended
* constructors.
*
* @param {Object} options - this options object should be
* the result of merging class
* options and the options passed
* in to the constructor.
*/
Vue.prototype._init = function (options) {
options = options || {};
this.$el = null;
this.$parent = options.parent;
this.$root = this.$parent ? this.$parent.$root : this;
this.$children = [];
this.$refs = {}; // child vm references
this.$els = {}; // element references
this._watchers = []; // all watchers as an array
this._directives = []; // all directives
// a uid
this._uid = uid++;
// a flag to avoid this being observed
this._isVue = true;
// events bookkeeping
this._events = {}; // registered callbacks
this._eventsCount = {}; // for $broadcast optimization
// fragment instance properties
this._isFragment = false;
this._fragment = // @type {DocumentFragment}
this._fragmentStart = // @type {Text|Comment}
this._fragmentEnd = null; // @type {Text|Comment}
// lifecycle state
this._isCompiled = this._isDestroyed = this._isReady = this._isAttached = this._isBeingDestroyed = false;
this._unlinkFn = null;
// context:
// if this is a transcluded component, context
// will be the common parent vm of this instance
// and its host.
this._context = options._context || this.$parent;
// scope:
// if this is inside an inline v-for, the scope
// will be the intermediate scope created for this
// repeat fragment. this is used for linking props
// and container directives.
this._scope = options._scope;
// fragment:
// if this instance is compiled inside a Fragment, it
// needs to reigster itself as a child of that fragment
// for attach/detach to work properly.
this._frag = options._frag;
if (this._frag) {
this._frag.children.push(this);
}
// push self into parent / transclusion host
if (this.$parent) {
this.$parent.$children.push(this);
}
// merge options.
options = this.$options = mergeOptions(this.constructor.options, options, this);
// set ref
this._updateRef();
// initialize data as empty object.
// it will be filled up in _initScope().
this._data = {};
// call init hook
this._callHook('init');
// initialize data observation and scope inheritance.
this._initState();
// setup event system and option events.
this._initEvents();
// call created hook
this._callHook('created');
// if `el` option is passed, start compilation.
if (options.el) {
this.$mount(options.el);
}
};
}
var pathCache = new Cache(1000);
// actions
var APPEND = 0;
var PUSH = 1;
var INC_SUB_PATH_DEPTH = 2;
var PUSH_SUB_PATH = 3;
// states
var BEFORE_PATH = 0;
var IN_PATH = 1;
var BEFORE_IDENT = 2;
var IN_IDENT = 3;
var IN_SUB_PATH = 4;
var IN_SINGLE_QUOTE = 5;
var IN_DOUBLE_QUOTE = 6;
var AFTER_PATH = 7;
var ERROR = 8;
var pathStateMachine = [];
pathStateMachine[BEFORE_PATH] = {
'ws': [BEFORE_PATH],
'ident': [IN_IDENT, APPEND],
'[': [IN_SUB_PATH],
'eof': [AFTER_PATH]
};
pathStateMachine[IN_PATH] = {
'ws': [IN_PATH],
'.': [BEFORE_IDENT],
'[': [IN_SUB_PATH],
'eof': [AFTER_PATH]
};
pathStateMachine[BEFORE_IDENT] = {
'ws': [BEFORE_IDENT],
'ident': [IN_IDENT, APPEND]
};
pathStateMachine[IN_IDENT] = {
'ident': [IN_IDENT, APPEND],
'0': [IN_IDENT, APPEND],
'number': [IN_IDENT, APPEND],
'ws': [IN_PATH, PUSH],
'.': [BEFORE_IDENT, PUSH],
'[': [IN_SUB_PATH, PUSH],
'eof': [AFTER_PATH, PUSH]
};
pathStateMachine[IN_SUB_PATH] = {
"'": [IN_SINGLE_QUOTE, APPEND],
'"': [IN_DOUBLE_QUOTE, APPEND],
'[': [IN_SUB_PATH, INC_SUB_PATH_DEPTH],
']': [IN_PATH, PUSH_SUB_PATH],
'eof': ERROR,
'else': [IN_SUB_PATH, APPEND]
};
pathStateMachine[IN_SINGLE_QUOTE] = {
"'": [IN_SUB_PATH, APPEND],
'eof': ERROR,
'else': [IN_SINGLE_QUOTE, APPEND]
};
pathStateMachine[IN_DOUBLE_QUOTE] = {
'"': [IN_SUB_PATH, APPEND],
'eof': ERROR,
'else': [IN_DOUBLE_QUOTE, APPEND]
};
/**
* Determine the type of a character in a keypath.
*
* @param {Char} ch
* @return {String} type
*/
function getPathCharType(ch) {
if (ch === undefined) {
return 'eof';
}
var code = ch.charCodeAt(0);
switch (code) {
case 0x5B: // [
case 0x5D: // ]
case 0x2E: // .
case 0x22: // "
case 0x27: // '
case 0x30:
// 0
return ch;
case 0x5F: // _
case 0x24:
// $
return 'ident';
case 0x20: // Space
case 0x09: // Tab
case 0x0A: // Newline
case 0x0D: // Return
case 0xA0: // No-break space
case 0xFEFF: // Byte Order Mark
case 0x2028: // Line Separator
case 0x2029:
// Paragraph Separator
return 'ws';
}
// a-z, A-Z
if (code >= 0x61 && code <= 0x7A || code >= 0x41 && code <= 0x5A) {
return 'ident';
}
// 1-9
if (code >= 0x31 && code <= 0x39) {
return 'number';
}
return 'else';
}
/**
* Format a subPath, return its plain form if it is
* a literal string or number. Otherwise prepend the
* dynamic indicator (*).
*
* @param {String} path
* @return {String}
*/
function formatSubPath(path) {
var trimmed = path.trim();
// invalid leading 0
if (path.charAt(0) === '0' && isNaN(path)) {
return false;
}
return isLiteral(trimmed) ? stripQuotes(trimmed) : '*' + trimmed;
}
/**
* Parse a string path into an array of segments
*
* @param {String} path
* @return {Array|undefined}
*/
function parse(path) {
var keys = [];
var index = -1;
var mode = BEFORE_PATH;
var subPathDepth = 0;
var c, newChar, key, type, transition, action, typeMap;
var actions = [];
actions[PUSH] = function () {
if (key !== undefined) {
keys.push(key);
key = undefined;
}
};
actions[APPEND] = function () {
if (key === undefined) {
key = newChar;
} else {
key += newChar;
}
};
actions[INC_SUB_PATH_DEPTH] = function () {
actions[APPEND]();
subPathDepth++;
};
actions[PUSH_SUB_PATH] = function () {
if (subPathDepth > 0) {
subPathDepth--;
mode = IN_SUB_PATH;
actions[APPEND]();
} else {
subPathDepth = 0;
key = formatSubPath(key);
if (key === false) {
return false;
} else {
actions[PUSH]();
}
}
};
function maybeUnescapeQuote() {
var nextChar = path[index + 1];
if (mode === IN_SINGLE_QUOTE && nextChar === "'" || mode === IN_DOUBLE_QUOTE && nextChar === '"') {
index++;
newChar = '\\' + nextChar;
actions[APPEND]();
return true;
}
}
while (mode != null) {
index++;
c = path[index];
if (c === '\\' && maybeUnescapeQuote()) {
continue;
}
type = getPathCharType(c);
typeMap = pathStateMachine[mode];
transition = typeMap[type] || typeMap['else'] || ERROR;
if (transition === ERROR) {
return; // parse error
}
mode = transition[0];
action = actions[transition[1]];
if (action) {
newChar = transition[2];
newChar = newChar === undefined ? c : newChar;
if (action() === false) {
return;
}
}
if (mode === AFTER_PATH) {
keys.raw = path;
return keys;
}
}
}
/**
* External parse that check for a cache hit first
*
* @param {String} path
* @return {Array|undefined}
*/
function parsePath(path) {
var hit = pathCache.get(path);
if (!hit) {
hit = parse(path);
if (hit) {
pathCache.put(path, hit);
}
}
return hit;
}
/**
* Get from an object from a path string
*
* @param {Object} obj
* @param {String} path
*/
function getPath(obj, path) {
return parseExpression(path).get(obj);
}
/**
* Warn against setting non-existent root path on a vm.
*/
var warnNonExistent;
if (process.env.NODE_ENV !== 'production') {
warnNonExistent = function (path) {
warn('You are setting a non-existent path "' + path.raw + '" ' + 'on a vm instance. Consider pre-initializing the property ' + 'with the "data" option for more reliable reactivity ' + 'and better performance.');
};
}
/**
* Set on an object from a path
*
* @param {Object} obj
* @param {String | Array} path
* @param {*} val
*/
function setPath(obj, path, val) {
var original = obj;
if (typeof path === 'string') {
path = parse(path);
}
if (!path || !isObject(obj)) {
return false;
}
var last, key;
for (var i = 0, l = path.length; i < l; i++) {
last = obj;
key = path[i];
if (key.charAt(0) === '*') {
key = parseExpression(key.slice(1)).get.call(original, original);
}
if (i < l - 1) {
obj = obj[key];
if (!isObject(obj)) {
obj = {};
if (process.env.NODE_ENV !== 'production' && last._isVue) {
warnNonExistent(path);
}
set(last, key, obj);
}
} else {
if (isArray(obj)) {
obj.$set(key, val);
} else if (key in obj) {
obj[key] = val;
} else {
if (process.env.NODE_ENV !== 'production' && obj._isVue) {
warnNonExistent(path);
}
set(obj, key, val);
}
}
}
return true;
}
var path = Object.freeze({
parsePath: parsePath,
getPath: getPath,
setPath: setPath
});
var expressionCache = new Cache(1000);
var allowedKeywords = 'Math,Date,this,true,false,null,undefined,Infinity,NaN,' + 'isNaN,isFinite,decodeURI,decodeURIComponent,encodeURI,' + 'encodeURIComponent,parseInt,parseFloat';
var allowedKeywordsRE = new RegExp('^(' + allowedKeywords.replace(/,/g, '\\b|') + '\\b)');
// keywords that don't make sense inside expressions
var improperKeywords = 'break,case,class,catch,const,continue,debugger,default,' + 'delete,do,else,export,extends,finally,for,function,if,' + 'import,in,instanceof,let,return,super,switch,throw,try,' + 'var,while,with,yield,enum,await,implements,package,' + 'proctected,static,interface,private,public';
var improperKeywordsRE = new RegExp('^(' + improperKeywords.replace(/,/g, '\\b|') + '\\b)');
var wsRE = /\s/g;
var newlineRE = /\n/g;
var saveRE = /[\{,]\s*[\w\$_]+\s*:|('(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*")|new |typeof |void /g;
var restoreRE = /"(\d+)"/g;
var pathTestRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['.*?'\]|\[".*?"\]|\[\d+\]|\[[A-Za-z_$][\w$]*\])*$/;
var identRE = /[^\w$\.](?:[A-Za-z_$][\w$]*)/g;
var booleanLiteralRE = /^(?:true|false)$/;
/**
* Save / Rewrite / Restore
*
* When rewriting paths found in an expression, it is
* possible for the same letter sequences to be found in
* strings and Object literal property keys. Therefore we
* remove and store these parts in a temporary array, and
* restore them after the path rewrite.
*/
var saved = [];
/**
* Save replacer
*
* The save regex can match two possible cases:
* 1. An opening object literal
* 2. A string
* If matched as a plain string, we need to escape its
* newlines, since the string needs to be preserved when
* generating the function body.
*
* @param {String} str
* @param {String} isString - str if matched as a string
* @return {String} - placeholder with index
*/
function save(str, isString) {
var i = saved.length;
saved[i] = isString ? str.replace(newlineRE, '\\n') : str;
return '"' + i + '"';
}
/**
* Path rewrite replacer
*
* @param {String} raw
* @return {String}
*/
function rewrite(raw) {
var c = raw.charAt(0);
var path = raw.slice(1);
if (allowedKeywordsRE.test(path)) {
return raw;
} else {
path = path.indexOf('"') > -1 ? path.replace(restoreRE, restore) : path;
return c + 'scope.' + path;
}
}
/**
* Restore replacer
*
* @param {String} str
* @param {String} i - matched save index
* @return {String}
*/
function restore(str, i) {
return saved[i];
}
/**
* Rewrite an expression, prefixing all path accessors with
* `scope.` and generate getter/setter functions.
*
* @param {String} exp
* @return {Function}
*/
function compileGetter(exp) {
if (improperKeywordsRE.test(exp)) {
process.env.NODE_ENV !== 'production' && warn('Avoid using reserved keywords in expression: ' + exp);
}
// reset state
saved.length = 0;
// save strings and object literal keys
var body = exp.replace(saveRE, save).replace(wsRE, '');
// rewrite all paths
// pad 1 space here becaue the regex matches 1 extra char
body = (' ' + body).replace(identRE, rewrite).replace(restoreRE, restore);
return makeGetterFn(body);
}
/**
* Build a getter function. Requires eval.
*
* We isolate the try/catch so it doesn't affect the
* optimization of the parse function when it is not called.
*
* @param {String} body
* @return {Function|undefined}
*/
function makeGetterFn(body) {
try {
return new Function('scope', 'return ' + body + ';');
} catch (e) {
process.env.NODE_ENV !== 'production' && warn('Invalid expression. ' + 'Generated function body: ' + body);
}
}
/**
* Compile a setter function for the expression.
*
* @param {String} exp
* @return {Function|undefined}
*/
function compileSetter(exp) {
var path = parsePath(exp);
if (path) {
return function (scope, val) {
setPath(scope, path, val);
};
} else {
process.env.NODE_ENV !== 'production' && warn('Invalid setter expression: ' + exp);
}
}
/**
* Parse an expression into re-written getter/setters.
*
* @param {String} exp
* @param {Boolean} needSet
* @return {Function}
*/
function parseExpression(exp, needSet) {
exp = exp.trim();
// try cache
var hit = expressionCache.get(exp);
if (hit) {
if (needSet && !hit.set) {
hit.set = compileSetter(hit.exp);
}
return hit;
}
var res = { exp: exp };
res.get = isSimplePath(exp) && exp.indexOf('[') < 0
// optimized super simple getter
? makeGetterFn('scope.' + exp)
// dynamic getter
: compileGetter(exp);
if (needSet) {
res.set = compileSetter(exp);
}
expressionCache.put(exp, res);
return res;
}
/**
* Check if an expression is a simple path.
*
* @param {String} exp
* @return {Boolean}
*/
function isSimplePath(exp) {
return pathTestRE.test(exp) &&
// don't treat true/false as paths
!booleanLiteralRE.test(exp) &&
// Math constants e.g. Math.PI, Math.E etc.
exp.slice(0, 5) !== 'Math.';
}
var expression = Object.freeze({
parseExpression: parseExpression,
isSimplePath: isSimplePath
});
// we have two separate queues: one for directive updates
// and one for user watcher registered via $watch().
// we want to guarantee directive updates to be called
// before user watchers so that when user watchers are
// triggered, the DOM would have already been in updated
// state.
var queue = [];
var userQueue = [];
var has = {};
var circular = {};
var waiting = false;
var internalQueueDepleted = false;
/**
* Reset the batcher's state.
*/
function resetBatcherState() {
queue = [];
userQueue = [];
has = {};
circular = {};
waiting = internalQueueDepleted = false;
}
/**
* Flush both queues and run the watchers.
*/
function flushBatcherQueue() {
runBatcherQueue(queue);
internalQueueDepleted = true;
runBatcherQueue(userQueue);
// dev tool hook
/* istanbul ignore if */
if (process.env.NODE_ENV !== 'production') {
if (inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__) {
window.__VUE_DEVTOOLS_GLOBAL_HOOK__.emit('flush');
}
}
resetBatcherState();
}
/**
* Run the watchers in a single queue.
*
* @param {Array} queue
*/
function runBatcherQueue(queue) {
// do not cache length because more watchers might be pushed
// as we run existing watchers
for (var i = 0; i < queue.length; i++) {
var watcher = queue[i];
var id = watcher.id;
has[id] = null;
watcher.run();
// in dev build, check and stop circular updates.
if (process.env.NODE_ENV !== 'production' && has[id] != null) {
circular[id] = (circular[id] || 0) + 1;
if (circular[id] > config._maxUpdateCount) {
queue.splice(has[id], 1);
warn('You may have an infinite update loop for watcher ' + 'with expression: ' + watcher.expression);
}
}
}
}
/**
* Push a watcher into the watcher queue.
* Jobs with duplicate IDs will be skipped unless it's
* pushed when the queue is being flushed.
*
* @param {Watcher} watcher
* properties:
* - {Number} id
* - {Function} run
*/
function pushWatcher(watcher) {
var id = watcher.id;
if (has[id] == null) {
// if an internal watcher is pushed, but the internal
// queue is already depleted, we run it immediately.
if (internalQueueDepleted && !watcher.user) {
watcher.run();
return;
}
// push watcher into appropriate queue
var q = watcher.user ? userQueue : queue;
has[id] = q.length;
q.push(watcher);
// queue the flush
if (!waiting) {
waiting = true;
nextTick(flushBatcherQueue);
}
}
}
var uid$2 = 0;
/**
* A watcher parses an expression, collects dependencies,
* and fires callback when the expression value changes.
* This is used for both the $watch() api and directives.
*
* @param {Vue} vm
* @param {String} expression
* @param {Function} cb
* @param {Object} options
* - {Array} filters
* - {Boolean} twoWay
* - {Boolean} deep
* - {Boolean} user
* - {Boolean} sync
* - {Boolean} lazy
* - {Function} [preProcess]
* - {Function} [postProcess]
* @constructor
*/
function Watcher(vm, expOrFn, cb, options) {
// mix in options
if (options) {
extend(this, options);
}
var isFn = typeof expOrFn === 'function';
this.vm = vm;
vm._watchers.push(this);
this.expression = isFn ? expOrFn.toString() : expOrFn;
this.cb = cb;
this.id = ++uid$2; // uid for batching
this.active = true;
this.dirty = this.lazy; // for lazy watchers
this.deps = Object.create(null);
this.newDeps = null;
this.prevError = null; // for async error stacks
// parse expression for getter/setter
if (isFn) {
this.getter = expOrFn;
this.setter = undefined;
} else {
var res = parseExpression(expOrFn, this.twoWay);
this.getter = res.get;
this.setter = res.set;
}
this.value = this.lazy ? undefined : this.get();
// state for avoiding false triggers for deep and Array
// watchers during vm._digest()
this.queued = this.shallow = false;
}
/**
* Add a dependency to this directive.
*
* @param {Dep} dep
*/
Watcher.prototype.addDep = function (dep) {
var id = dep.id;
if (!this.newDeps[id]) {
this.newDeps[id] = dep;
if (!this.deps[id]) {
this.deps[id] = dep;
dep.addSub(this);
}
}
};
/**
* Evaluate the getter, and re-collect dependencies.
*/
Watcher.prototype.get = function () {
this.beforeGet();
var scope = this.scope || this.vm;
var value;
try {
value = this.getter.call(scope, scope);
} catch (e) {
if (process.env.NODE_ENV !== 'production' && config.warnExpressionErrors) {
warn('Error when evaluating expression "' + this.expression + '". ' + (config.debug ? '' : 'Turn on debug mode to see stack trace.'), e);
}
}
// "touch" every property so they are all tracked as
// dependencies for deep watching
if (this.deep) {
traverse(value);
}
if (this.preProcess) {
value = this.preProcess(value);
}
if (this.filters) {
value = scope._applyFilters(value, null, this.filters, false);
}
if (this.postProcess) {
value = this.postProcess(value);
}
this.afterGet();
return value;
};
/**
* Set the corresponding value with the setter.
*
* @param {*} value
*/
Watcher.prototype.set = function (value) {
var scope = this.scope || this.vm;
if (this.filters) {
value = scope._applyFilters(value, this.value, this.filters, true);
}
try {
this.setter.call(scope, scope, value);
} catch (e) {
if (process.env.NODE_ENV !== 'production' && config.warnExpressionErrors) {
warn('Error when evaluating setter "' + this.expression + '"', e);
}
}
// two-way sync for v-for alias
var forContext = scope.$forContext;
if (forContext && forContext.alias === this.expression) {
if (forContext.filters) {
process.env.NODE_ENV !== 'production' && warn('It seems you are using two-way binding on ' + 'a v-for alias (' + this.expression + '), and the ' + 'v-for has filters. This will not work properly. ' + 'Either remove the filters or use an array of ' + 'objects and bind to object properties instead.');
return;
}
forContext._withLock(function () {
if (scope.$key) {
// original is an object
forContext.rawValue[scope.$key] = value;
} else {
forContext.rawValue.$set(scope.$index, value);
}
});
}
};
/**
* Prepare for dependency collection.
*/
Watcher.prototype.beforeGet = function () {
Dep.target = this;
this.newDeps = Object.create(null);
};
/**
* Clean up for dependency collection.
*/
Watcher.prototype.afterGet = function () {
Dep.target = null;
var ids = Object.keys(this.deps);
var i = ids.length;
while (i--) {
var id = ids[i];
if (!this.newDeps[id]) {
this.deps[id].removeSub(this);
}
}
this.deps = this.newDeps;
};
/**
* Subscriber interface.
* Will be called when a dependency changes.
*
* @param {Boolean} shallow
*/
Watcher.prototype.update = function (shallow) {
if (this.lazy) {
this.dirty = true;
} else if (this.sync || !config.async) {
this.run();
} else {
// if queued, only overwrite shallow with non-shallow,
// but not the other way around.
this.shallow = this.queued ? shallow ? this.shallow : false : !!shallow;
this.queued = true;
// record before-push error stack in debug mode
/* istanbul ignore if */
if (process.env.NODE_ENV !== 'production' && config.debug) {
this.prevError = new Error('[vue] async stack trace');
}
pushWatcher(this);
}
};
/**
* Batcher job interface.
* Will be called by the batcher.
*/
Watcher.prototype.run = function () {
if (this.active) {
var value = this.get();
if (value !== this.value ||
// Deep watchers and watchers on Object/Arrays should fire even
// when the value is the same, because the value may
// have mutated; but only do so if this is a
// non-shallow update (caused by a vm digest).
(isObject(value) || this.deep) && !this.shallow) {
// set new value
var oldValue = this.value;
this.value = value;
// in debug + async mode, when a watcher callbacks
// throws, we also throw the saved before-push error
// so the full cross-tick stack trace is available.
var prevError = this.prevError;
/* istanbul ignore if */
if (process.env.NODE_ENV !== 'production' && config.debug && prevError) {
this.prevError = null;
try {
this.cb.call(this.vm, value, oldValue);
} catch (e) {
nextTick(function () {
throw prevError;
}, 0);
throw e;
}
} else {
this.cb.call(this.vm, value, oldValue);
}
}
this.queued = this.shallow = false;
}
};
/**
* Evaluate the value of the watcher.
* This only gets called for lazy watchers.
*/
Watcher.prototype.evaluate = function () {
// avoid overwriting another watcher that is being
// collected.
var current = Dep.target;
this.value = this.get();
this.dirty = false;
Dep.target = current;
};
/**
* Depend on all deps collected by this watcher.
*/
Watcher.prototype.depend = function () {
var depIds = Object.keys(this.deps);
var i = depIds.length;
while (i--) {
this.deps[depIds[i]].depend();
}
};
/**
* Remove self from all dependencies' subcriber list.
*/
Watcher.prototype.teardown = function () {
if (this.active) {
// remove self from vm's watcher list
// we can skip this if the vm if being destroyed
// which can improve teardown performance.
if (!this.vm._isBeingDestroyed) {
this.vm._watchers.$remove(this);
}
var depIds = Object.keys(this.deps);
var i = depIds.length;
while (i--) {
this.deps[depIds[i]].removeSub(this);
}
this.active = false;
this.vm = this.cb = this.value = null;
}
};
/**
* Recrusively traverse an object to evoke all converted
* getters, so that every nested property inside the object
* is collected as a "deep" dependency.
*
* @param {*} val
*/
function traverse(val) {
var i, keys;
if (isArray(val)) {
i = val.length;
while (i--) traverse(val[i]);
} else if (isObject(val)) {
keys = Object.keys(val);
i = keys.length;
while (i--) traverse(val[keys[i]]);
}
}
var cloak = {
bind: function bind() {
var el = this.el;
this.vm.$once('pre-hook:compiled', function () {
el.removeAttribute('v-cloak');
});
}
};
var ref = {
bind: function bind() {
process.env.NODE_ENV !== 'production' && warn('v-ref:' + this.arg + ' must be used on a child ' + 'component. Found on <' + this.el.tagName.toLowerCase() + '>.');
}
};
var ON = 700;
var MODEL = 800;
var BIND = 850;
var TRANSITION = 1100;
var EL = 1500;
var COMPONENT = 1500;
var PARTIAL = 1750;
var FOR = 2000;
var IF = 2000;
var SLOT = 2100;
var el = {
priority: EL,
bind: function bind() {
/* istanbul ignore if */
if (!this.arg) {
return;
}
var id = this.id = camelize(this.arg);
var refs = (this._scope || this.vm).$els;
if (hasOwn(refs, id)) {
refs[id] = this.el;
} else {
defineReactive(refs, id, this.el);
}
},
unbind: function unbind() {
var refs = (this._scope || this.vm).$els;
if (refs[this.id] === this.el) {
refs[this.id] = null;
}
}
};
var prefixes = ['-webkit-', '-moz-', '-ms-'];
var camelPrefixes = ['Webkit', 'Moz', 'ms'];
var importantRE = /!important;?$/;
var propCache = Object.create(null);
var testEl = null;
var style = {
deep: true,
update: function update(value) {
if (typeof value === 'string') {
this.el.style.cssText = value;
} else if (isArray(value)) {
this.handleObject(value.reduce(extend, {}));
} else {
this.handleObject(value || {});
}
},
handleObject: function handleObject(value) {
// cache object styles so that only changed props
// are actually updated.
var cache = this.cache || (this.cache = {});
var name, val;
for (name in cache) {
if (!(name in value)) {
this.handleSingle(name, null);
delete cache[name];
}
}
for (name in value) {
val = value[name];
if (val !== cache[name]) {
cache[name] = val;
this.handleSingle(name, val);
}
}
},
handleSingle: function handleSingle(prop, value) {
prop = normalize(prop);
if (!prop) return; // unsupported prop
// cast possible numbers/booleans into strings
if (value != null) value += '';
if (value) {
var isImportant = importantRE.test(value) ? 'important' : '';
if (isImportant) {
value = value.replace(importantRE, '').trim();
}
this.el.style.setProperty(prop, value, isImportant);
} else {
this.el.style.removeProperty(prop);
}
}
};
/**
* Normalize a CSS property name.
* - cache result
* - auto prefix
* - camelCase -> dash-case
*
* @param {String} prop
* @return {String}
*/
function normalize(prop) {
if (propCache[prop]) {
return propCache[prop];
}
var res = prefix(prop);
propCache[prop] = propCache[res] = res;
return res;
}
/**
* Auto detect the appropriate prefix for a CSS property.
* https://gist.github.com/paulirish/523692
*
* @param {String} prop
* @return {String}
*/
function prefix(prop) {
prop = hyphenate(prop);
var camel = camelize(prop);
var upper = camel.charAt(0).toUpperCase() + camel.slice(1);
if (!testEl) {
testEl = document.createElement('div');
}
if (camel in testEl.style) {
return prop;
}
var i = prefixes.length;
var prefixed;
while (i--) {
prefixed = camelPrefixes[i] + upper;
if (prefixed in testEl.style) {
return prefixes[i] + prop;
}
}
}
// xlink
var xlinkNS = 'http://www.w3.org/1999/xlink';
var xlinkRE = /^xlink:/;
// check for attributes that prohibit interpolations
var disallowedInterpAttrRE = /^v-|^:|^@|^(?:is|transition|transition-mode|debounce|track-by|stagger|enter-stagger|leave-stagger)$/;
// these attributes should also set their corresponding properties
// because they only affect the initial state of the element
var attrWithPropsRE = /^(?:value|checked|selected|muted)$/;
// these attributes should set a hidden property for
// binding v-model to object values
var modelProps = {
value: '_value',
'true-value': '_trueValue',
'false-value': '_falseValue'
};
var bind = {
priority: BIND,
bind: function bind() {
var attr = this.arg;
var tag = this.el.tagName;
// should be deep watch on object mode
if (!attr) {
this.deep = true;
}
// handle interpolation bindings
var descriptor = this.descriptor;
var tokens = descriptor.interp;
if (tokens) {
// handle interpolations with one-time tokens
if (descriptor.hasOneTime) {
this.expression = tokensToExp(tokens, this._scope || this.vm);
}
// only allow binding on native attributes
if (disallowedInterpAttrRE.test(attr) || attr === 'name' && (tag === 'PARTIAL' || tag === 'SLOT')) {
process.env.NODE_ENV !== 'production' && warn(attr + '="' + descriptor.raw + '": ' + 'attribute interpolation is not allowed in Vue.js ' + 'directives and special attributes.');
this.el.removeAttribute(attr);
this.invalid = true;
}
/* istanbul ignore if */
if (process.env.NODE_ENV !== 'production') {
var raw = attr + '="' + descriptor.raw + '": ';
// warn src
if (attr === 'src') {
warn(raw + 'interpolation in "src" attribute will cause ' + 'a 404 request. Use v-bind:src instead.');
}
// warn style
if (attr === 'style') {
warn(raw + 'interpolation in "style" attribute will cause ' + 'the attribute to be discarded in Internet Explorer. ' + 'Use v-bind:style instead.');
}
}
}
},
update: function update(value) {
if (this.invalid) {
return;
}
var attr = this.arg;
if (this.arg) {
this.handleSingle(attr, value);
} else {
this.handleObject(value || {});
}
},
// share object handler with v-bind:class
handleObject: style.handleObject,
handleSingle: function handleSingle(attr, value) {
var el = this.el;
var interp = this.descriptor.interp;
if (!interp && attrWithPropsRE.test(attr) && attr in el) {
el[attr] = attr === 'value' ? value == null // IE9 will set input.value to "null" for null...
? '' : value : value;
}
// set model props
var modelProp = modelProps[attr];
if (!interp && modelProp) {
el[modelProp] = value;
// update v-model if present
var model = el.__v_model;
if (model) {
model.listener();
}
}
// do not set value attribute for textarea
if (attr === 'value' && el.tagName === 'TEXTAREA') {
el.removeAttribute(attr);
return;
}
// update attribute
if (value != null && value !== false) {
if (attr === 'class') {
// handle edge case #1960:
// class interpolation should not overwrite Vue transition class
if (el.__v_trans) {
value += ' ' + el.__v_trans.id + '-transition';
}
setClass(el, value);
} else if (xlinkRE.test(attr)) {
el.setAttributeNS(xlinkNS, attr, value);
} else {
el.setAttribute(attr, value);
}
} else {
el.removeAttribute(attr);
}
}
};
// keyCode aliases
var keyCodes = {
esc: 27,
tab: 9,
enter: 13,
space: 32,
'delete': 46,
up: 38,
left: 37,
right: 39,
down: 40
};
function keyFilter(handler, keys) {
var codes = keys.map(function (key) {
var charCode = key.charCodeAt(0);
if (charCode > 47 && charCode < 58) {
return parseInt(key, 10);
}
if (key.length === 1) {
charCode = key.toUpperCase().charCodeAt(0);
if (charCode > 64 && charCode < 91) {
return charCode;
}
}
return keyCodes[key];
});
return function keyHandler(e) {
if (codes.indexOf(e.keyCode) > -1) {
return handler.call(this, e);
}
};
}
function stopFilter(handler) {
return function stopHandler(e) {
e.stopPropagation();
return handler.call(this, e);
};
}
function preventFilter(handler) {
return function preventHandler(e) {
e.preventDefault();
return handler.call(this, e);
};
}
var on = {
acceptStatement: true,
priority: ON,
bind: function bind() {
// deal with iframes
if (this.el.tagName === 'IFRAME' && this.arg !== 'load') {
var self = this;
this.iframeBind = function () {
on$1(self.el.contentWindow, self.arg, self.handler);
};
this.on('load', this.iframeBind);
}
},
update: function update(handler) {
// stub a noop for v-on with no value,
// e.g. @mousedown.prevent
if (!this.descriptor.raw) {
handler = function () {};
}
if (typeof handler !== 'function') {
process.env.NODE_ENV !== 'production' && warn('v-on:' + this.arg + '="' + this.expression + '" expects a function value, ' + 'got ' + handler);
return;
}
// apply modifiers
if (this.modifiers.stop) {
handler = stopFilter(handler);
}
if (this.modifiers.prevent) {
handler = preventFilter(handler);
}
// key filter
var keys = Object.keys(this.modifiers).filter(function (key) {
return key !== 'stop' && key !== 'prevent';
});
if (keys.length) {
handler = keyFilter(handler, keys);
}
this.reset();
this.handler = handler;
if (this.iframeBind) {
this.iframeBind();
} else {
on$1(this.el, this.arg, this.handler);
}
},
reset: function reset() {
var el = this.iframeBind ? this.el.contentWindow : this.el;
if (this.handler) {
off(el, this.arg, this.handler);
}
},
unbind: function unbind() {
this.reset();
}
};
var checkbox = {
bind: function bind() {
var self = this;
var el = this.el;
this.getValue = function () {
return el.hasOwnProperty('_value') ? el._value : self.params.number ? toNumber(el.value) : el.value;
};
function getBooleanValue() {
var val = el.checked;
if (val && el.hasOwnProperty('_trueValue')) {
return el._trueValue;
}
if (!val && el.hasOwnProperty('_falseValue')) {
return el._falseValue;
}
return val;
}
this.listener = function () {
var model = self._watcher.value;
if (isArray(model)) {
var val = self.getValue();
if (el.checked) {
if (indexOf(model, val) < 0) {
model.push(val);
}
} else {
model.$remove(val);
}
} else {
self.set(getBooleanValue());
}
};
this.on('change', this.listener);
if (el.hasAttribute('checked')) {
this.afterBind = this.listener;
}
},
update: function update(value) {
var el = this.el;
if (isArray(value)) {
el.checked = indexOf(value, this.getValue()) > -1;
} else {
if (el.hasOwnProperty('_trueValue')) {
el.checked = looseEqual(value, el._trueValue);
} else {
el.checked = !!value;
}
}
}
};
var select = {
bind: function bind() {
var self = this;
var el = this.el;
// method to force update DOM using latest value.
this.forceUpdate = function () {
if (self._watcher) {
self.update(self._watcher.get());
}
};
// check if this is a multiple select
var multiple = this.multiple = el.hasAttribute('multiple');
// attach listener
this.listener = function () {
var value = getValue(el, multiple);
value = self.params.number ? isArray(value) ? value.map(toNumber) : toNumber(value) : value;
self.set(value);
};
this.on('change', this.listener);
// if has initial value, set afterBind
var initValue = getValue(el, multiple, true);
if (multiple && initValue.length || !multiple && initValue !== null) {
this.afterBind = this.listener;
}
// All major browsers except Firefox resets
// selectedIndex with value -1 to 0 when the element
// is appended to a new parent, therefore we have to
// force a DOM update whenever that happens...
this.vm.$on('hook:attached', this.forceUpdate);
},
update: function update(value) {
var el = this.el;
el.selectedIndex = -1;
var multi = this.multiple && isArray(value);
var options = el.options;
var i = options.length;
var op, val;
while (i--) {
op = options[i];
val = op.hasOwnProperty('_value') ? op._value : op.value;
/* eslint-disable eqeqeq */
op.selected = multi ? indexOf$1(value, val) > -1 : looseEqual(value, val);
/* eslint-enable eqeqeq */
}
},
unbind: function unbind() {
/* istanbul ignore next */
this.vm.$off('hook:attached', this.forceUpdate);
}
};
/**
* Get select value
*
* @param {SelectElement} el
* @param {Boolean} multi
* @param {Boolean} init
* @return {Array|*}
*/
function getValue(el, multi, init) {
var res = multi ? [] : null;
var op, val, selected;
for (var i = 0, l = el.options.length; i < l; i++) {
op = el.options[i];
selected = init ? op.hasAttribute('selected') : op.selected;
if (selected) {
val = op.hasOwnProperty('_value') ? op._value : op.value;
if (multi) {
res.push(val);
} else {
return val;
}
}
}
return res;
}
/**
* Native Array.indexOf uses strict equal, but in this
* case we need to match string/numbers with custom equal.
*
* @param {Array} arr
* @param {*} val
*/
function indexOf$1(arr, val) {
var i = arr.length;
while (i--) {
if (looseEqual(arr[i], val)) {
return i;
}
}
return -1;
}
var radio = {
bind: function bind() {
var self = this;
var el = this.el;
this.getValue = function () {
// value overwrite via v-bind:value
if (el.hasOwnProperty('_value')) {
return el._value;
}
var val = el.value;
if (self.params.number) {
val = toNumber(val);
}
return val;
};
this.listener = function () {
self.set(self.getValue());
};
this.on('change', this.listener);
if (el.hasAttribute('checked')) {
this.afterBind = this.listener;
}
},
update: function update(value) {
this.el.checked = looseEqual(value, this.getValue());
}
};
var text$2 = {
bind: function bind() {
var self = this;
var el = this.el;
var isRange = el.type === 'range';
var lazy = this.params.lazy;
var number = this.params.number;
var debounce = this.params.debounce;
// handle composition events.
// http://blog.evanyou.me/2014/01/03/composition-event/
// skip this for Android because it handles composition
// events quite differently. Android doesn't trigger
// composition events for language input methods e.g.
// Chinese, but instead triggers them for spelling
// suggestions... (see Discussion/#162)
var composing = false;
if (!isAndroid && !isRange) {
this.on('compositionstart', function () {
composing = true;
});
this.on('compositionend', function () {
composing = false;
// in IE11 the "compositionend" event fires AFTER
// the "input" event, so the input handler is blocked
// at the end... have to call it here.
//
// #1327: in lazy mode this is unecessary.
if (!lazy) {
self.listener();
}
});
}
// prevent messing with the input when user is typing,
// and force update on blur.
this.focused = false;
if (!isRange && !lazy) {
this.on('focus', function () {
self.focused = true;
});
this.on('blur', function () {
self.focused = false;
// do not sync value after fragment removal (#2017)
if (!self._frag || self._frag.inserted) {
self.rawListener();
}
});
}
// Now attach the main listener
this.listener = this.rawListener = function () {
if (composing || !self._bound) {
return;
}
var val = number || isRange ? toNumber(el.value) : el.value;
self.set(val);
// force update on next tick to avoid lock & same value
// also only update when user is not typing
nextTick(function () {
if (self._bound && !self.focused) {
self.update(self._watcher.value);
}
});
};
// apply debounce
if (debounce) {
this.listener = _debounce(this.listener, debounce);
}
// Support jQuery events, since jQuery.trigger() doesn't
// trigger native events in some cases and some plugins
// rely on $.trigger()
//
// We want to make sure if a listener is attached using
// jQuery, it is also removed with jQuery, that's why
// we do the check for each directive instance and
// store that check result on itself. This also allows
// easier test coverage control by unsetting the global
// jQuery variable in tests.
this.hasjQuery = typeof jQuery === 'function';
if (this.hasjQuery) {
jQuery(el).on('change', this.listener);
if (!lazy) {
jQuery(el).on('input', this.listener);
}
} else {
this.on('change', this.listener);
if (!lazy) {
this.on('input', this.listener);
}
}
// IE9 doesn't fire input event on backspace/del/cut
if (!lazy && isIE9) {
this.on('cut', function () {
nextTick(self.listener);
});
this.on('keyup', function (e) {
if (e.keyCode === 46 || e.keyCode === 8) {
self.listener();
}
});
}
// set initial value if present
if (el.hasAttribute('value') || el.tagName === 'TEXTAREA' && el.value.trim()) {
this.afterBind = this.listener;
}
},
update: function update(value) {
this.el.value = _toString(value);
},
unbind: function unbind() {
var el = this.el;
if (this.hasjQuery) {
jQuery(el).off('change', this.listener);
jQuery(el).off('input', this.listener);
}
}
};
var handlers = {
text: text$2,
radio: radio,
select: select,
checkbox: checkbox
};
var model = {
priority: MODEL,
twoWay: true,
handlers: handlers,
params: ['lazy', 'number', 'debounce'],
/**
* Possible elements:
* <select>
* <textarea>
* <input type="*">
* - text
* - checkbox
* - radio
* - number
*/
bind: function bind() {
// friendly warning...
this.checkFilters();
if (this.hasRead && !this.hasWrite) {
process.env.NODE_ENV !== 'production' && warn('It seems you are using a read-only filter with ' + 'v-model. You might want to use a two-way filter ' + 'to ensure correct behavior.');
}
var el = this.el;
var tag = el.tagName;
var handler;
if (tag === 'INPUT') {
handler = handlers[el.type] || handlers.text;
} else if (tag === 'SELECT') {
handler = handlers.select;
} else if (tag === 'TEXTAREA') {
handler = handlers.text;
} else {
process.env.NODE_ENV !== 'production' && warn('v-model does not support element type: ' + tag);
return;
}
el.__v_model = this;
handler.bind.call(this);
this.update = handler.update;
this._unbind = handler.unbind;
},
/**
* Check read/write filter stats.
*/
checkFilters: function checkFilters() {
var filters = this.filters;
if (!filters) return;
var i = filters.length;
while (i--) {
var filter = resolveAsset(this.vm.$options, 'filters', filters[i].name);
if (typeof filter === 'function' || filter.read) {
this.hasRead = true;
}
if (filter.write) {
this.hasWrite = true;
}
}
},
unbind: function unbind() {
this.el.__v_model = null;
this._unbind && this._unbind();
}
};
var show = {
bind: function bind() {
// check else block
var next = this.el.nextElementSibling;
if (next && getAttr(next, 'v-else') !== null) {
this.elseEl = next;
}
},
update: function update(value) {
this.apply(this.el, value);
if (this.elseEl) {
this.apply(this.elseEl, !value);
}
},
apply: function apply(el, value) {
if (inDoc(el)) {
applyTransition(el, value ? 1 : -1, toggle, this.vm);
} else {
toggle();
}
function toggle() {
el.style.display = value ? '' : 'none';
}
}
};
var templateCache = new Cache(1000);
var idSelectorCache = new Cache(1000);
var map = {
efault: [0, '', ''],
legend: [1, '<fieldset>', '</fieldset>'],
tr: [2, '<table><tbody>', '</tbody></table>'],
col: [2, '<table><tbody></tbody><colgroup>', '</colgroup></table>']
};
map.td = map.th = [3, '<table><tbody><tr>', '</tr></tbody></table>'];
map.option = map.optgroup = [1, '<select multiple="multiple">', '</select>'];
map.thead = map.tbody = map.colgroup = map.caption = map.tfoot = [1, '<table>', '</table>'];
map.g = map.defs = map.symbol = map.use = map.image = map.text = map.circle = map.ellipse = map.line = map.path = map.polygon = map.polyline = map.rect = [1, '<svg ' + 'xmlns="http://www.w3.org/2000/svg" ' + 'xmlns:xlink="http://www.w3.org/1999/xlink" ' + 'xmlns:ev="http://www.w3.org/2001/xml-events"' + 'version="1.1">', '</svg>'];
/**
* Check if a node is a supported template node with a
* DocumentFragment content.
*
* @param {Node} node
* @return {Boolean}
*/
function isRealTemplate(node) {
return isTemplate(node) && node.content instanceof DocumentFragment;
}
var tagRE$1 = /<([\w:]+)/;
var entityRE = /&#?\w+?;/;
/**
* Convert a string template to a DocumentFragment.
* Determines correct wrapping by tag types. Wrapping
* strategy found in jQuery & component/domify.
*
* @param {String} templateString
* @param {Boolean} raw
* @return {DocumentFragment}
*/
function stringToFragment(templateString, raw) {
// try a cache hit first
var hit = templateCache.get(templateString);
if (hit) {
return hit;
}
var frag = document.createDocumentFragment();
var tagMatch = templateString.match(tagRE$1);
var entityMatch = entityRE.test(templateString);
if (!tagMatch && !entityMatch) {
// text only, return a single text node.
frag.appendChild(document.createTextNode(templateString));
} else {
var tag = tagMatch && tagMatch[1];
var wrap = map[tag] || map.efault;
var depth = wrap[0];
var prefix = wrap[1];
var suffix = wrap[2];
var node = document.createElement('div');
var templateStringToUse = raw ? templateString : templateString.trim();
node.innerHTML = prefix + templateStringToUse + suffix;
while (depth--) {
node = node.lastChild;
}
var child;
/* eslint-disable no-cond-assign */
while (child = node.firstChild) {
/* eslint-enable no-cond-assign */
frag.appendChild(child);
}
}
templateCache.put(templateString, frag);
return frag;
}
/**
* Convert a template node to a DocumentFragment.
*
* @param {Node} node
* @return {DocumentFragment}
*/
function nodeToFragment(node) {
// if its a template tag and the browser supports it,
// its content is already a document fragment.
if (isRealTemplate(node)) {
trimNode(node.content);
return node.content;
}
// script template
if (node.tagName === 'SCRIPT') {
return stringToFragment(node.textContent);
}
// normal node, clone it to avoid mutating the original
var clonedNode = cloneNode(node);
var frag = document.createDocumentFragment();
var child;
/* eslint-disable no-cond-assign */
while (child = clonedNode.firstChild) {
/* eslint-enable no-cond-assign */
frag.appendChild(child);
}
trimNode(frag);
return frag;
}
// Test for the presence of the Safari template cloning bug
// https://bugs.webkit.org/showug.cgi?id=137755
var hasBrokenTemplate = (function () {
/* istanbul ignore else */
if (inBrowser) {
var a = document.createElement('div');
a.innerHTML = '<template>1</template>';
return !a.cloneNode(true).firstChild.innerHTML;
} else {
return false;
}
})();
// Test for IE10/11 textarea placeholder clone bug
var hasTextareaCloneBug = (function () {
/* istanbul ignore else */
if (inBrowser) {
var t = document.createElement('textarea');
t.placeholder = 't';
return t.cloneNode(true).value === 't';
} else {
return false;
}
})();
/**
* 1. Deal with Safari cloning nested <template> bug by
* manually cloning all template instances.
* 2. Deal with IE10/11 textarea placeholder bug by setting
* the correct value after cloning.
*
* @param {Element|DocumentFragment} node
* @return {Element|DocumentFragment}
*/
function cloneNode(node) {
if (!node.querySelectorAll) {
return node.cloneNode();
}
var res = node.cloneNode(true);
var i, original, cloned;
/* istanbul ignore if */
if (hasBrokenTemplate) {
var tempClone = res;
if (isRealTemplate(node)) {
node = node.content;
tempClone = res.content;
}
original = node.querySelectorAll('template');
if (original.length) {
cloned = tempClone.querySelectorAll('template');
i = cloned.length;
while (i--) {
cloned[i].parentNode.replaceChild(cloneNode(original[i]), cloned[i]);
}
}
}
/* istanbul ignore if */
if (hasTextareaCloneBug) {
if (node.tagName === 'TEXTAREA') {
res.value = node.value;
} else {
original = node.querySelectorAll('textarea');
if (original.length) {
cloned = res.querySelectorAll('textarea');
i = cloned.length;
while (i--) {
cloned[i].value = original[i].value;
}
}
}
}
return res;
}
/**
* Process the template option and normalizes it into a
* a DocumentFragment that can be used as a partial or a
* instance template.
*
* @param {*} template
* Possible values include:
* - DocumentFragment object
* - Node object of type Template
* - id selector: '#some-template-id'
* - template string: '<div><span>{{msg}}</span></div>'
* @param {Boolean} shouldClone
* @param {Boolean} raw
* inline HTML interpolation. Do not check for id
* selector and keep whitespace in the string.
* @return {DocumentFragment|undefined}
*/
function parseTemplate(template, shouldClone, raw) {
var node, frag;
// if the template is already a document fragment,
// do nothing
if (template instanceof DocumentFragment) {
trimNode(template);
return shouldClone ? cloneNode(template) : template;
}
if (typeof template === 'string') {
// id selector
if (!raw && template.charAt(0) === '#') {
// id selector can be cached too
frag = idSelectorCache.get(template);
if (!frag) {
node = document.getElementById(template.slice(1));
if (node) {
frag = nodeToFragment(node);
// save selector to cache
idSelectorCache.put(template, frag);
}
}
} else {
// normal string template
frag = stringToFragment(template, raw);
}
} else if (template.nodeType) {
// a direct node
frag = nodeToFragment(template);
}
return frag && shouldClone ? cloneNode(frag) : frag;
}
var template = Object.freeze({
cloneNode: cloneNode,
parseTemplate: parseTemplate
});
/**
* Abstraction for a partially-compiled fragment.
* Can optionally compile content with a child scope.
*
* @param {Function} linker
* @param {Vue} vm
* @param {DocumentFragment} frag
* @param {Vue} [host]
* @param {Object} [scope]
*/
function Fragment(linker, vm, frag, host, scope, parentFrag) {
this.children = [];
this.childFrags = [];
this.vm = vm;
this.scope = scope;
this.inserted = false;
this.parentFrag = parentFrag;
if (parentFrag) {
parentFrag.childFrags.push(this);
}
this.unlink = linker(vm, frag, host, scope, this);
var single = this.single = frag.childNodes.length === 1 &&
// do not go single mode if the only node is an anchor
!frag.childNodes[0].__vue_anchor;
if (single) {
this.node = frag.childNodes[0];
this.before = singleBefore;
this.remove = singleRemove;
} else {
this.node = createAnchor('fragment-start');
this.end = createAnchor('fragment-end');
this.frag = frag;
prepend(this.node, frag);
frag.appendChild(this.end);
this.before = multiBefore;
this.remove = multiRemove;
}
this.node.__vfrag__ = this;
}
/**
* Call attach/detach for all components contained within
* this fragment. Also do so recursively for all child
* fragments.
*
* @param {Function} hook
*/
Fragment.prototype.callHook = function (hook) {
var i, l;
for (i = 0, l = this.childFrags.length; i < l; i++) {
this.childFrags[i].callHook(hook);
}
for (i = 0, l = this.children.length; i < l; i++) {
hook(this.children[i]);
}
};
/**
* Insert fragment before target, single node version
*
* @param {Node} target
* @param {Boolean} withTransition
*/
function singleBefore(target, withTransition) {
this.inserted = true;
var method = withTransition !== false ? beforeWithTransition : before;
method(this.node, target, this.vm);
if (inDoc(this.node)) {
this.callHook(attach);
}
}
/**
* Remove fragment, single node version
*/
function singleRemove() {
this.inserted = false;
var shouldCallRemove = inDoc(this.node);
var self = this;
this.beforeRemove();
removeWithTransition(this.node, this.vm, function () {
if (shouldCallRemove) {
self.callHook(detach);
}
self.destroy();
});
}
/**
* Insert fragment before target, multi-nodes version
*
* @param {Node} target
* @param {Boolean} withTransition
*/
function multiBefore(target, withTransition) {
this.inserted = true;
var vm = this.vm;
var method = withTransition !== false ? beforeWithTransition : before;
mapNodeRange(this.node, this.end, function (node) {
method(node, target, vm);
});
if (inDoc(this.node)) {
this.callHook(attach);
}
}
/**
* Remove fragment, multi-nodes version
*/
function multiRemove() {
this.inserted = false;
var self = this;
var shouldCallRemove = inDoc(this.node);
this.beforeRemove();
removeNodeRange(this.node, this.end, this.vm, this.frag, function () {
if (shouldCallRemove) {
self.callHook(detach);
}
self.destroy();
});
}
/**
* Prepare the fragment for removal.
*/
Fragment.prototype.beforeRemove = function () {
var i, l;
for (i = 0, l = this.childFrags.length; i < l; i++) {
// call the same method recursively on child
// fragments, depth-first
this.childFrags[i].beforeRemove(false);
}
for (i = 0, l = this.children.length; i < l; i++) {
// Call destroy for all contained instances,
// with remove:false and defer:true.
// Defer is necessary because we need to
// keep the children to call detach hooks
// on them.
this.children[i].$destroy(false, true);
}
var dirs = this.unlink.dirs;
for (i = 0, l = dirs.length; i < l; i++) {
// disable the watchers on all the directives
// so that the rendered content stays the same
// during removal.
dirs[i]._watcher && dirs[i]._watcher.teardown();
}
};
/**
* Destroy the fragment.
*/
Fragment.prototype.destroy = function () {
if (this.parentFrag) {
this.parentFrag.childFrags.$remove(this);
}
this.node.__vfrag__ = null;
this.unlink();
};
/**
* Call attach hook for a Vue instance.
*
* @param {Vue} child
*/
function attach(child) {
if (!child._isAttached) {
child._callHook('attached');
}
}
/**
* Call detach hook for a Vue instance.
*
* @param {Vue} child
*/
function detach(child) {
if (child._isAttached) {
child._callHook('detached');
}
}
var linkerCache = new Cache(5000);
/**
* A factory that can be used to create instances of a
* fragment. Caches the compiled linker if possible.
*
* @param {Vue} vm
* @param {Element|String} el
*/
function FragmentFactory(vm, el) {
this.vm = vm;
var template;
var isString = typeof el === 'string';
if (isString || isTemplate(el)) {
template = parseTemplate(el, true);
} else {
template = document.createDocumentFragment();
template.appendChild(el);
}
this.template = template;
// linker can be cached, but only for components
var linker;
var cid = vm.constructor.cid;
if (cid > 0) {
var cacheId = cid + (isString ? el : el.outerHTML);
linker = linkerCache.get(cacheId);
if (!linker) {
linker = compile(template, vm.$options, true);
linkerCache.put(cacheId, linker);
}
} else {
linker = compile(template, vm.$options, true);
}
this.linker = linker;
}
/**
* Create a fragment instance with given host and scope.
*
* @param {Vue} host
* @param {Object} scope
* @param {Fragment} parentFrag
*/
FragmentFactory.prototype.create = function (host, scope, parentFrag) {
var frag = cloneNode(this.template);
return new Fragment(this.linker, this.vm, frag, host, scope, parentFrag);
};
var vIf = {
priority: IF,
bind: function bind() {
var el = this.el;
if (!el.__vue__) {
// check else block
var next = el.nextElementSibling;
if (next && getAttr(next, 'v-else') !== null) {
remove(next);
this.elseFactory = new FragmentFactory(this.vm, next);
}
// check main block
this.anchor = createAnchor('v-if');
replace(el, this.anchor);
this.factory = new FragmentFactory(this.vm, el);
} else {
process.env.NODE_ENV !== 'production' && warn('v-if="' + this.expression + '" cannot be ' + 'used on an instance root element.');
this.invalid = true;
}
},
update: function update(value) {
if (this.invalid) return;
if (value) {
if (!this.frag) {
this.insert();
}
} else {
this.remove();
}
},
insert: function insert() {
if (this.elseFrag) {
this.elseFrag.remove();
this.elseFrag = null;
}
this.frag = this.factory.create(this._host, this._scope, this._frag);
this.frag.before(this.anchor);
},
remove: function remove() {
if (this.frag) {
this.frag.remove();
this.frag = null;
}
if (this.elseFactory && !this.elseFrag) {
this.elseFrag = this.elseFactory.create(this._host, this._scope, this._frag);
this.elseFrag.before(this.anchor);
}
},
unbind: function unbind() {
if (this.frag) {
this.frag.destroy();
}
}
};
var uid$1 = 0;
var vFor = {
priority: FOR,
params: ['track-by', 'stagger', 'enter-stagger', 'leave-stagger'],
bind: function bind() {
// support "item in items" syntax
var inMatch = this.expression.match(/(.*) in (.*)/);
if (inMatch) {
var itMatch = inMatch[1].match(/\((.*),(.*)\)/);
if (itMatch) {
this.iterator = itMatch[1].trim();
this.alias = itMatch[2].trim();
} else {
this.alias = inMatch[1].trim();
}
this.expression = inMatch[2];
}
if (!this.alias) {
process.env.NODE_ENV !== 'production' && warn('Alias is required in v-for.');
return;
}
// uid as a cache identifier
this.id = '__v-for__' + ++uid$1;
// check if this is an option list,
// so that we know if we need to update the <select>'s
// v-model when the option list has changed.
// because v-model has a lower priority than v-for,
// the v-model is not bound here yet, so we have to
// retrive it in the actual updateModel() function.
var tag = this.el.tagName;
this.isOption = (tag === 'OPTION' || tag === 'OPTGROUP') && this.el.parentNode.tagName === 'SELECT';
// setup anchor nodes
this.start = createAnchor('v-for-start');
this.end = createAnchor('v-for-end');
replace(this.el, this.end);
before(this.start, this.end);
// cache
this.cache = Object.create(null);
// fragment factory
this.factory = new FragmentFactory(this.vm, this.el);
},
update: function update(data) {
this.diff(data);
this.updateRef();
this.updateModel();
},
/**
* Diff, based on new data and old data, determine the
* minimum amount of DOM manipulations needed to make the
* DOM reflect the new data Array.
*
* The algorithm diffs the new data Array by storing a
* hidden reference to an owner vm instance on previously
* seen data. This allows us to achieve O(n) which is
* better than a levenshtein distance based algorithm,
* which is O(m * n).
*
* @param {Array} data
*/
diff: function diff(data) {
// check if the Array was converted from an Object
var item = data[0];
var convertedFromObject = this.fromObject = isObject(item) && hasOwn(item, '$key') && hasOwn(item, '$value');
var trackByKey = this.params.trackBy;
var oldFrags = this.frags;
var frags = this.frags = new Array(data.length);
var alias = this.alias;
var iterator = this.iterator;
var start = this.start;
var end = this.end;
var inDocument = inDoc(start);
var init = !oldFrags;
var i, l, frag, key, value, primitive;
// First pass, go through the new Array and fill up
// the new frags array. If a piece of data has a cached
// instance for it, we reuse it. Otherwise build a new
// instance.
for (i = 0, l = data.length; i < l; i++) {
item = data[i];
key = convertedFromObject ? item.$key : null;
value = convertedFromObject ? item.$value : item;
primitive = !isObject(value);
frag = !init && this.getCachedFrag(value, i, key);
if (frag) {
// reusable fragment
frag.reused = true;
// update $index
frag.scope.$index = i;
// update $key
if (key) {
frag.scope.$key = key;
}
// update iterator
if (iterator) {
frag.scope[iterator] = key !== null ? key : i;
}
// update data for track-by, object repeat &
// primitive values.
if (trackByKey || convertedFromObject || primitive) {
frag.scope[alias] = value;
}
} else {
// new isntance
frag = this.create(value, alias, i, key);
frag.fresh = !init;
}
frags[i] = frag;
if (init) {
frag.before(end);
}
}
// we're done for the initial render.
if (init) {
return;
}
// Second pass, go through the old fragments and
// destroy those who are not reused (and remove them
// from cache)
var removalIndex = 0;
var totalRemoved = oldFrags.length - frags.length;
for (i = 0, l = oldFrags.length; i < l; i++) {
frag = oldFrags[i];
if (!frag.reused) {
this.deleteCachedFrag(frag);
this.remove(frag, removalIndex++, totalRemoved, inDocument);
}
}
// Final pass, move/insert new fragments into the
// right place.
var targetPrev, prevEl, currentPrev;
var insertionIndex = 0;
for (i = 0, l = frags.length; i < l; i++) {
frag = frags[i];
// this is the frag that we should be after
targetPrev = frags[i - 1];
prevEl = targetPrev ? targetPrev.staggerCb ? targetPrev.staggerAnchor : targetPrev.end || targetPrev.node : start;
if (frag.reused && !frag.staggerCb) {
currentPrev = findPrevFrag(frag, start, this.id);
if (currentPrev !== targetPrev && (!currentPrev ||
// optimization for moving a single item.
// thanks to suggestions by @livoras in #1807
findPrevFrag(currentPrev, start, this.id) !== targetPrev)) {
this.move(frag, prevEl);
}
} else {
// new instance, or still in stagger.
// insert with updated stagger index.
this.insert(frag, insertionIndex++, prevEl, inDocument);
}
frag.reused = frag.fresh = false;
}
},
/**
* Create a new fragment instance.
*
* @param {*} value
* @param {String} alias
* @param {Number} index
* @param {String} [key]
* @return {Fragment}
*/
create: function create(value, alias, index, key) {
var host = this._host;
// create iteration scope
var parentScope = this._scope || this.vm;
var scope = Object.create(parentScope);
// ref holder for the scope
scope.$refs = Object.create(parentScope.$refs);
scope.$els = Object.create(parentScope.$els);
// make sure point $parent to parent scope
scope.$parent = parentScope;
// for two-way binding on alias
scope.$forContext = this;
// define scope properties
defineReactive(scope, alias, value);
defineReactive(scope, '$index', index);
if (key) {
defineReactive(scope, '$key', key);
} else if (scope.$key) {
// avoid accidental fallback
def(scope, '$key', null);
}
if (this.iterator) {
defineReactive(scope, this.iterator, key !== null ? key : index);
}
var frag = this.factory.create(host, scope, this._frag);
frag.forId = this.id;
this.cacheFrag(value, frag, index, key);
return frag;
},
/**
* Update the v-ref on owner vm.
*/
updateRef: function updateRef() {
var ref = this.descriptor.ref;
if (!ref) return;
var hash = (this._scope || this.vm).$refs;
var refs;
if (!this.fromObject) {
refs = this.frags.map(findVmFromFrag);
} else {
refs = {};
this.frags.forEach(function (frag) {
refs[frag.scope.$key] = findVmFromFrag(frag);
});
}
hash[ref] = refs;
},
/**
* For option lists, update the containing v-model on
* parent <select>.
*/
updateModel: function updateModel() {
if (this.isOption) {
var parent = this.start.parentNode;
var model = parent && parent.__v_model;
if (model) {
model.forceUpdate();
}
}
},
/**
* Insert a fragment. Handles staggering.
*
* @param {Fragment} frag
* @param {Number} index
* @param {Node} prevEl
* @param {Boolean} inDocument
*/
insert: function insert(frag, index, prevEl, inDocument) {
if (frag.staggerCb) {
frag.staggerCb.cancel();
frag.staggerCb = null;
}
var staggerAmount = this.getStagger(frag, index, null, 'enter');
if (inDocument && staggerAmount) {
// create an anchor and insert it synchronously,
// so that we can resolve the correct order without
// worrying about some elements not inserted yet
var anchor = frag.staggerAnchor;
if (!anchor) {
anchor = frag.staggerAnchor = createAnchor('stagger-anchor');
anchor.__vfrag__ = frag;
}
after(anchor, prevEl);
var op = frag.staggerCb = cancellable(function () {
frag.staggerCb = null;
frag.before(anchor);
remove(anchor);
});
setTimeout(op, staggerAmount);
} else {
frag.before(prevEl.nextSibling);
}
},
/**
* Remove a fragment. Handles staggering.
*
* @param {Fragment} frag
* @param {Number} index
* @param {Number} total
* @param {Boolean} inDocument
*/
remove: function remove(frag, index, total, inDocument) {
if (frag.staggerCb) {
frag.staggerCb.cancel();
frag.staggerCb = null;
// it's not possible for the same frag to be removed
// twice, so if we have a pending stagger callback,
// it means this frag is queued for enter but removed
// before its transition started. Since it is already
// destroyed, we can just leave it in detached state.
return;
}
var staggerAmount = this.getStagger(frag, index, total, 'leave');
if (inDocument && staggerAmount) {
var op = frag.staggerCb = cancellable(function () {
frag.staggerCb = null;
frag.remove();
});
setTimeout(op, staggerAmount);
} else {
frag.remove();
}
},
/**
* Move a fragment to a new position.
* Force no transition.
*
* @param {Fragment} frag
* @param {Node} prevEl
*/
move: function move(frag, prevEl) {
// fix a common issue with Sortable:
// if prevEl doesn't have nextSibling, this means it's
// been dragged after the end anchor. Just re-position
// the end anchor to the end of the container.
/* istanbul ignore if */
if (!prevEl.nextSibling) {
this.end.parentNode.appendChild(this.end);
}
frag.before(prevEl.nextSibling, false);
},
/**
* Cache a fragment using track-by or the object key.
*
* @param {*} value
* @param {Fragment} frag
* @param {Number} index
* @param {String} [key]
*/
cacheFrag: function cacheFrag(value, frag, index, key) {
var trackByKey = this.params.trackBy;
var cache = this.cache;
var primitive = !isObject(value);
var id;
if (key || trackByKey || primitive) {
id = trackByKey ? trackByKey === '$index' ? index : value[trackByKey] : key || value;
if (!cache[id]) {
cache[id] = frag;
} else if (trackByKey !== '$index') {
process.env.NODE_ENV !== 'production' && this.warnDuplicate(value);
}
} else {
id = this.id;
if (hasOwn(value, id)) {
if (value[id] === null) {
value[id] = frag;
} else {
process.env.NODE_ENV !== 'production' && this.warnDuplicate(value);
}
} else {
def(value, id, frag);
}
}
frag.raw = value;
},
/**
* Get a cached fragment from the value/index/key
*
* @param {*} value
* @param {Number} index
* @param {String} key
* @return {Fragment}
*/
getCachedFrag: function getCachedFrag(value, index, key) {
var trackByKey = this.params.trackBy;
var primitive = !isObject(value);
var frag;
if (key || trackByKey || primitive) {
var id = trackByKey ? trackByKey === '$index' ? index : value[trackByKey] : key || value;
frag = this.cache[id];
} else {
frag = value[this.id];
}
if (frag && (frag.reused || frag.fresh)) {
process.env.NODE_ENV !== 'production' && this.warnDuplicate(value);
}
return frag;
},
/**
* Delete a fragment from cache.
*
* @param {Fragment} frag
*/
deleteCachedFrag: function deleteCachedFrag(frag) {
var value = frag.raw;
var trackByKey = this.params.trackBy;
var scope = frag.scope;
var index = scope.$index;
// fix #948: avoid accidentally fall through to
// a parent repeater which happens to have $key.
var key = hasOwn(scope, '$key') && scope.$key;
var primitive = !isObject(value);
if (trackByKey || key || primitive) {
var id = trackByKey ? trackByKey === '$index' ? index : value[trackByKey] : key || value;
this.cache[id] = null;
} else {
value[this.id] = null;
frag.raw = null;
}
},
/**
* Get the stagger amount for an insertion/removal.
*
* @param {Fragment} frag
* @param {Number} index
* @param {Number} total
* @param {String} type
*/
getStagger: function getStagger(frag, index, total, type) {
type = type + 'Stagger';
var trans = frag.node.__v_trans;
var hooks = trans && trans.hooks;
var hook = hooks && (hooks[type] || hooks.stagger);
return hook ? hook.call(frag, index, total) : index * parseInt(this.params[type] || this.params.stagger, 10);
},
/**
* Pre-process the value before piping it through the
* filters. This is passed to and called by the watcher.
*/
_preProcess: function _preProcess(value) {
// regardless of type, store the un-filtered raw value.
this.rawValue = value;
return value;
},
/**
* Post-process the value after it has been piped through
* the filters. This is passed to and called by the watcher.
*
* It is necessary for this to be called during the
* wathcer's dependency collection phase because we want
* the v-for to update when the source Object is mutated.
*/
_postProcess: function _postProcess(value) {
if (isArray(value)) {
return value;
} else if (isPlainObject(value)) {
// convert plain object to array.
var keys = Object.keys(value);
var i = keys.length;
var res = new Array(i);
var key;
while (i--) {
key = keys[i];
res[i] = {
$key: key,
$value: value[key]
};
}
return res;
} else {
if (typeof value === 'number') {
value = range(value);
}
return value || [];
}
},
unbind: function unbind() {
if (this.descriptor.ref) {
(this._scope || this.vm).$refs[this.descriptor.ref] = null;
}
if (this.frags) {
var i = this.frags.length;
var frag;
while (i--) {
frag = this.frags[i];
this.deleteCachedFrag(frag);
frag.destroy();
}
}
}
};
/**
* Helper to find the previous element that is a fragment
* anchor. This is necessary because a destroyed frag's
* element could still be lingering in the DOM before its
* leaving transition finishes, but its inserted flag
* should have been set to false so we can skip them.
*
* If this is a block repeat, we want to make sure we only
* return frag that is bound to this v-for. (see #929)
*
* @param {Fragment} frag
* @param {Comment|Text} anchor
* @param {String} id
* @return {Fragment}
*/
function findPrevFrag(frag, anchor, id) {
var el = frag.node.previousSibling;
/* istanbul ignore if */
if (!el) return;
frag = el.__vfrag__;
while ((!frag || frag.forId !== id || !frag.inserted) && el !== anchor) {
el = el.previousSibling;
/* istanbul ignore if */
if (!el) return;
frag = el.__vfrag__;
}
return frag;
}
/**
* Find a vm from a fragment.
*
* @param {Fragment} frag
* @return {Vue|undefined}
*/
function findVmFromFrag(frag) {
var node = frag.node;
// handle multi-node frag
if (frag.end) {
while (!node.__vue__ && node !== frag.end && node.nextSibling) {
node = node.nextSibling;
}
}
return node.__vue__;
}
/**
* Create a range array from given number.
*
* @param {Number} n
* @return {Array}
*/
function range(n) {
var i = -1;
var ret = new Array(n);
while (++i < n) {
ret[i] = i;
}
return ret;
}
if (process.env.NODE_ENV !== 'production') {
vFor.warnDuplicate = function (value) {
warn('Duplicate value found in v-for="' + this.descriptor.raw + '": ' + JSON.stringify(value) + '. Use track-by="$index" if ' + 'you are expecting duplicate values.');
};
}
var html = {
bind: function bind() {
// a comment node means this is a binding for
// {{{ inline unescaped html }}}
if (this.el.nodeType === 8) {
// hold nodes
this.nodes = [];
// replace the placeholder with proper anchor
this.anchor = createAnchor('v-html');
replace(this.el, this.anchor);
}
},
update: function update(value) {
value = _toString(value);
if (this.nodes) {
this.swap(value);
} else {
this.el.innerHTML = value;
}
},
swap: function swap(value) {
// remove old nodes
var i = this.nodes.length;
while (i--) {
remove(this.nodes[i]);
}
// convert new value to a fragment
// do not attempt to retrieve from id selector
var frag = parseTemplate(value, true, true);
// save a reference to these nodes so we can remove later
this.nodes = toArray(frag.childNodes);
before(frag, this.anchor);
}
};
var text = {
bind: function bind() {
this.attr = this.el.nodeType === 3 ? 'data' : 'textContent';
},
update: function update(value) {
this.el[this.attr] = _toString(value);
}
};
// must export plain object
var publicDirectives = {
text: text,
html: html,
'for': vFor,
'if': vIf,
show: show,
model: model,
on: on,
bind: bind,
el: el,
ref: ref,
cloak: cloak
};
var queue$1 = [];
var queued = false;
/**
* Push a job into the queue.
*
* @param {Function} job
*/
function pushJob(job) {
queue$1.push(job);
if (!queued) {
queued = true;
nextTick(flush);
}
}
/**
* Flush the queue, and do one forced reflow before
* triggering transitions.
*/
function flush() {
// Force layout
var f = document.documentElement.offsetHeight;
for (var i = 0; i < queue$1.length; i++) {
queue$1[i]();
}
queue$1 = [];
queued = false;
// dummy return, so js linters don't complain about
// unused variable f
return f;
}
var TYPE_TRANSITION = 'transition';
var TYPE_ANIMATION = 'animation';
var transDurationProp = transitionProp + 'Duration';
var animDurationProp = animationProp + 'Duration';
/**
* A Transition object that encapsulates the state and logic
* of the transition.
*
* @param {Element} el
* @param {String} id
* @param {Object} hooks
* @param {Vue} vm
*/
function Transition(el, id, hooks, vm) {
this.id = id;
this.el = el;
this.enterClass = hooks && hooks.enterClass || id + '-enter';
this.leaveClass = hooks && hooks.leaveClass || id + '-leave';
this.hooks = hooks;
this.vm = vm;
// async state
this.pendingCssEvent = this.pendingCssCb = this.cancel = this.pendingJsCb = this.op = this.cb = null;
this.justEntered = false;
this.entered = this.left = false;
this.typeCache = {};
// check css transition type
this.type = hooks && hooks.type;
/* istanbul ignore if */
if (process.env.NODE_ENV !== 'production') {
if (this.type && this.type !== TYPE_TRANSITION && this.type !== TYPE_ANIMATION) {
warn('invalid CSS transition type for transition="' + this.id + '": ' + this.type);
}
}
// bind
var self = this;['enterNextTick', 'enterDone', 'leaveNextTick', 'leaveDone'].forEach(function (m) {
self[m] = bind$1(self[m], self);
});
}
var p$1 = Transition.prototype;
/**
* Start an entering transition.
*
* 1. enter transition triggered
* 2. call beforeEnter hook
* 3. add enter class
* 4. insert/show element
* 5. call enter hook (with possible explicit js callback)
* 6. reflow
* 7. based on transition type:
* - transition:
* remove class now, wait for transitionend,
* then done if there's no explicit js callback.
* - animation:
* wait for animationend, remove class,
* then done if there's no explicit js callback.
* - no css transition:
* done now if there's no explicit js callback.
* 8. wait for either done or js callback, then call
* afterEnter hook.
*
* @param {Function} op - insert/show the element
* @param {Function} [cb]
*/
p$1.enter = function (op, cb) {
this.cancelPending();
this.callHook('beforeEnter');
this.cb = cb;
addClass(this.el, this.enterClass);
op();
this.entered = false;
this.callHookWithCb('enter');
if (this.entered) {
return; // user called done synchronously.
}
this.cancel = this.hooks && this.hooks.enterCancelled;
pushJob(this.enterNextTick);
};
/**
* The "nextTick" phase of an entering transition, which is
* to be pushed into a queue and executed after a reflow so
* that removing the class can trigger a CSS transition.
*/
p$1.enterNextTick = function () {
// Important hack:
// in Chrome, if a just-entered element is applied the
// leave class while its interpolated property still has
// a very small value (within one frame), Chrome will
// skip the leave transition entirely and not firing the
// transtionend event. Therefore we need to protected
// against such cases using a one-frame timeout.
this.justEntered = true;
var self = this;
setTimeout(function () {
self.justEntered = false;
}, 17);
var enterDone = this.enterDone;
var type = this.getCssTransitionType(this.enterClass);
if (!this.pendingJsCb) {
if (type === TYPE_TRANSITION) {
// trigger transition by removing enter class now
removeClass(this.el, this.enterClass);
this.setupCssCb(transitionEndEvent, enterDone);
} else if (type === TYPE_ANIMATION) {
this.setupCssCb(animationEndEvent, enterDone);
} else {
enterDone();
}
} else if (type === TYPE_TRANSITION) {
removeClass(this.el, this.enterClass);
}
};
/**
* The "cleanup" phase of an entering transition.
*/
p$1.enterDone = function () {
this.entered = true;
this.cancel = this.pendingJsCb = null;
removeClass(this.el, this.enterClass);
this.callHook('afterEnter');
if (this.cb) this.cb();
};
/**
* Start a leaving transition.
*
* 1. leave transition triggered.
* 2. call beforeLeave hook
* 3. add leave class (trigger css transition)
* 4. call leave hook (with possible explicit js callback)
* 5. reflow if no explicit js callback is provided
* 6. based on transition type:
* - transition or animation:
* wait for end event, remove class, then done if
* there's no explicit js callback.
* - no css transition:
* done if there's no explicit js callback.
* 7. wait for either done or js callback, then call
* afterLeave hook.
*
* @param {Function} op - remove/hide the element
* @param {Function} [cb]
*/
p$1.leave = function (op, cb) {
this.cancelPending();
this.callHook('beforeLeave');
this.op = op;
this.cb = cb;
addClass(this.el, this.leaveClass);
this.left = false;
this.callHookWithCb('leave');
if (this.left) {
return; // user called done synchronously.
}
this.cancel = this.hooks && this.hooks.leaveCancelled;
// only need to handle leaveDone if
// 1. the transition is already done (synchronously called
// by the user, which causes this.op set to null)
// 2. there's no explicit js callback
if (this.op && !this.pendingJsCb) {
// if a CSS transition leaves immediately after enter,
// the transitionend event never fires. therefore we
// detect such cases and end the leave immediately.
if (this.justEntered) {
this.leaveDone();
} else {
pushJob(this.leaveNextTick);
}
}
};
/**
* The "nextTick" phase of a leaving transition.
*/
p$1.leaveNextTick = function () {
var type = this.getCssTransitionType(this.leaveClass);
if (type) {
var event = type === TYPE_TRANSITION ? transitionEndEvent : animationEndEvent;
this.setupCssCb(event, this.leaveDone);
} else {
this.leaveDone();
}
};
/**
* The "cleanup" phase of a leaving transition.
*/
p$1.leaveDone = function () {
this.left = true;
this.cancel = this.pendingJsCb = null;
this.op();
removeClass(this.el, this.leaveClass);
this.callHook('afterLeave');
if (this.cb) this.cb();
this.op = null;
};
/**
* Cancel any pending callbacks from a previously running
* but not finished transition.
*/
p$1.cancelPending = function () {
this.op = this.cb = null;
var hasPending = false;
if (this.pendingCssCb) {
hasPending = true;
off(this.el, this.pendingCssEvent, this.pendingCssCb);
this.pendingCssEvent = this.pendingCssCb = null;
}
if (this.pendingJsCb) {
hasPending = true;
this.pendingJsCb.cancel();
this.pendingJsCb = null;
}
if (hasPending) {
removeClass(this.el, this.enterClass);
removeClass(this.el, this.leaveClass);
}
if (this.cancel) {
this.cancel.call(this.vm, this.el);
this.cancel = null;
}
};
/**
* Call a user-provided synchronous hook function.
*
* @param {String} type
*/
p$1.callHook = function (type) {
if (this.hooks && this.hooks[type]) {
this.hooks[type].call(this.vm, this.el);
}
};
/**
* Call a user-provided, potentially-async hook function.
* We check for the length of arguments to see if the hook
* expects a `done` callback. If true, the transition's end
* will be determined by when the user calls that callback;
* otherwise, the end is determined by the CSS transition or
* animation.
*
* @param {String} type
*/
p$1.callHookWithCb = function (type) {
var hook = this.hooks && this.hooks[type];
if (hook) {
if (hook.length > 1) {
this.pendingJsCb = cancellable(this[type + 'Done']);
}
hook.call(this.vm, this.el, this.pendingJsCb);
}
};
/**
* Get an element's transition type based on the
* calculated styles.
*
* @param {String} className
* @return {Number}
*/
p$1.getCssTransitionType = function (className) {
/* istanbul ignore if */
if (!transitionEndEvent ||
// skip CSS transitions if page is not visible -
// this solves the issue of transitionend events not
// firing until the page is visible again.
// pageVisibility API is supported in IE10+, same as
// CSS transitions.
document.hidden ||
// explicit js-only transition
this.hooks && this.hooks.css === false ||
// element is hidden
isHidden(this.el)) {
return;
}
var type = this.type || this.typeCache[className];
if (type) return type;
var inlineStyles = this.el.style;
var computedStyles = window.getComputedStyle(this.el);
var transDuration = inlineStyles[transDurationProp] || computedStyles[transDurationProp];
if (transDuration && transDuration !== '0s') {
type = TYPE_TRANSITION;
} else {
var animDuration = inlineStyles[animDurationProp] || computedStyles[animDurationProp];
if (animDuration && animDuration !== '0s') {
type = TYPE_ANIMATION;
}
}
if (type) {
this.typeCache[className] = type;
}
return type;
};
/**
* Setup a CSS transitionend/animationend callback.
*
* @param {String} event
* @param {Function} cb
*/
p$1.setupCssCb = function (event, cb) {
this.pendingCssEvent = event;
var self = this;
var el = this.el;
var onEnd = this.pendingCssCb = function (e) {
if (e.target === el) {
off(el, event, onEnd);
self.pendingCssEvent = self.pendingCssCb = null;
if (!self.pendingJsCb && cb) {
cb();
}
}
};
on$1(el, event, onEnd);
};
/**
* Check if an element is hidden - in that case we can just
* skip the transition alltogether.
*
* @param {Element} el
* @return {Boolean}
*/
function isHidden(el) {
return !(el.offsetWidth || el.offsetHeight || el.getClientRects().length);
}
var transition = {
priority: TRANSITION,
update: function update(id, oldId) {
var el = this.el;
// resolve on owner vm
var hooks = resolveAsset(this.vm.$options, 'transitions', id);
id = id || 'v';
// apply on closest vm
el.__v_trans = new Transition(el, id, hooks, this.el.__vue__ || this.vm);
if (oldId) {
removeClass(el, oldId + '-transition');
}
addClass(el, id + '-transition');
}
};
var bindingModes = config._propBindingModes;
var propDef = {
bind: function bind() {
var child = this.vm;
var parent = child._context;
// passed in from compiler directly
var prop = this.descriptor.prop;
var childKey = prop.path;
var parentKey = prop.parentPath;
var twoWay = prop.mode === bindingModes.TWO_WAY;
var parentWatcher = this.parentWatcher = new Watcher(parent, parentKey, function (val) {
val = coerceProp(prop, val);
if (assertProp(prop, val)) {
child[childKey] = val;
}
}, {
twoWay: twoWay,
filters: prop.filters,
// important: props need to be observed on the
// v-for scope if present
scope: this._scope
});
// set the child initial value.
initProp(child, prop, parentWatcher.value);
// setup two-way binding
if (twoWay) {
// important: defer the child watcher creation until
// the created hook (after data observation)
var self = this;
child.$once('pre-hook:created', function () {
self.childWatcher = new Watcher(child, childKey, function (val) {
parentWatcher.set(val);
}, {
// ensure sync upward before parent sync down.
// this is necessary in cases e.g. the child
// mutates a prop array, then replaces it. (#1683)
sync: true
});
});
}
},
unbind: function unbind() {
this.parentWatcher.teardown();
if (this.childWatcher) {
this.childWatcher.teardown();
}
}
};
var component = {
priority: COMPONENT,
params: ['keep-alive', 'transition-mode', 'inline-template'],
/**
* Setup. Two possible usages:
*
* - static:
* <comp> or <div v-component="comp">
*
* - dynamic:
* <component :is="view">
*/
bind: function bind() {
if (!this.el.__vue__) {
// keep-alive cache
this.keepAlive = this.params.keepAlive;
if (this.keepAlive) {
this.cache = {};
}
// check inline-template
if (this.params.inlineTemplate) {
// extract inline template as a DocumentFragment
this.inlineTemplate = extractContent(this.el, true);
}
// component resolution related state
this.pendingComponentCb = this.Component = null;
// transition related state
this.pendingRemovals = 0;
this.pendingRemovalCb = null;
// create a ref anchor
this.anchor = createAnchor('v-component');
replace(this.el, this.anchor);
// remove is attribute.
// this is removed during compilation, but because compilation is
// cached, when the component is used elsewhere this attribute
// will remain at link time.
this.el.removeAttribute('is');
// remove ref, same as above
if (this.descriptor.ref) {
this.el.removeAttribute('v-ref:' + hyphenate(this.descriptor.ref));
}
// if static, build right now.
if (this.literal) {
this.setComponent(this.expression);
}
} else {
process.env.NODE_ENV !== 'production' && warn('cannot mount component "' + this.expression + '" ' + 'on already mounted element: ' + this.el);
}
},
/**
* Public update, called by the watcher in the dynamic
* literal scenario, e.g. <component :is="view">
*/
update: function update(value) {
if (!this.literal) {
this.setComponent(value);
}
},
/**
* Switch dynamic components. May resolve the component
* asynchronously, and perform transition based on
* specified transition mode. Accepts a few additional
* arguments specifically for vue-router.
*
* The callback is called when the full transition is
* finished.
*
* @param {String} value
* @param {Function} [cb]
*/
setComponent: function setComponent(value, cb) {
this.invalidatePending();
if (!value) {
// just remove current
this.unbuild(true);
this.remove(this.childVM, cb);
this.childVM = null;
} else {
var self = this;
this.resolveComponent(value, function () {
self.mountComponent(cb);
});
}
},
/**
* Resolve the component constructor to use when creating
* the child vm.
*/
resolveComponent: function resolveComponent(id, cb) {
var self = this;
this.pendingComponentCb = cancellable(function (Component) {
self.ComponentName = Component.options.name || id;
self.Component = Component;
cb();
});
this.vm._resolveComponent(id, this.pendingComponentCb);
},
/**
* Create a new instance using the current constructor and
* replace the existing instance. This method doesn't care
* whether the new component and the old one are actually
* the same.
*
* @param {Function} [cb]
*/
mountComponent: function mountComponent(cb) {
// actual mount
this.unbuild(true);
var self = this;
var activateHook = this.Component.options.activate;
var cached = this.getCached();
var newComponent = this.build();
if (activateHook && !cached) {
this.waitingFor = newComponent;
activateHook.call(newComponent, function () {
if (self.waitingFor !== newComponent) {
return;
}
self.waitingFor = null;
self.transition(newComponent, cb);
});
} else {
// update ref for kept-alive component
if (cached) {
newComponent._updateRef();
}
this.transition(newComponent, cb);
}
},
/**
* When the component changes or unbinds before an async
* constructor is resolved, we need to invalidate its
* pending callback.
*/
invalidatePending: function invalidatePending() {
if (this.pendingComponentCb) {
this.pendingComponentCb.cancel();
this.pendingComponentCb = null;
}
},
/**
* Instantiate/insert a new child vm.
* If keep alive and has cached instance, insert that
* instance; otherwise build a new one and cache it.
*
* @param {Object} [extraOptions]
* @return {Vue} - the created instance
*/
build: function build(extraOptions) {
var cached = this.getCached();
if (cached) {
return cached;
}
if (this.Component) {
// default options
var options = {
name: this.ComponentName,
el: cloneNode(this.el),
template: this.inlineTemplate,
// make sure to add the child with correct parent
// if this is a transcluded component, its parent
// should be the transclusion host.
parent: this._host || this.vm,
// if no inline-template, then the compiled
// linker can be cached for better performance.
_linkerCachable: !this.inlineTemplate,
_ref: this.descriptor.ref,
_asComponent: true,
_isRouterView: this._isRouterView,
// if this is a transcluded component, context
// will be the common parent vm of this instance
// and its host.
_context: this.vm,
// if this is inside an inline v-for, the scope
// will be the intermediate scope created for this
// repeat fragment. this is used for linking props
// and container directives.
_scope: this._scope,
// pass in the owner fragment of this component.
// this is necessary so that the fragment can keep
// track of its contained components in order to
// call attach/detach hooks for them.
_frag: this._frag
};
// extra options
// in 1.0.0 this is used by vue-router only
/* istanbul ignore if */
if (extraOptions) {
extend(options, extraOptions);
}
var child = new this.Component(options);
if (this.keepAlive) {
this.cache[this.Component.cid] = child;
}
/* istanbul ignore if */
if (process.env.NODE_ENV !== 'production' && this.el.hasAttribute('transition') && child._isFragment) {
warn('Transitions will not work on a fragment instance. ' + 'Template: ' + child.$options.template);
}
return child;
}
},
/**
* Try to get a cached instance of the current component.
*
* @return {Vue|undefined}
*/
getCached: function getCached() {
return this.keepAlive && this.cache[this.Component.cid];
},
/**
* Teardown the current child, but defers cleanup so
* that we can separate the destroy and removal steps.
*
* @param {Boolean} defer
*/
unbuild: function unbuild(defer) {
if (this.waitingFor) {
this.waitingFor.$destroy();
this.waitingFor = null;
}
var child = this.childVM;
if (!child || this.keepAlive) {
if (child) {
// remove ref
child._updateRef(true);
}
return;
}
// the sole purpose of `deferCleanup` is so that we can
// "deactivate" the vm right now and perform DOM removal
// later.
child.$destroy(false, defer);
},
/**
* Remove current destroyed child and manually do
* the cleanup after removal.
*
* @param {Function} cb
*/
remove: function remove(child, cb) {
var keepAlive = this.keepAlive;
if (child) {
// we may have a component switch when a previous
// component is still being transitioned out.
// we want to trigger only one lastest insertion cb
// when the existing transition finishes. (#1119)
this.pendingRemovals++;
this.pendingRemovalCb = cb;
var self = this;
child.$remove(function () {
self.pendingRemovals--;
if (!keepAlive) child._cleanup();
if (!self.pendingRemovals && self.pendingRemovalCb) {
self.pendingRemovalCb();
self.pendingRemovalCb = null;
}
});
} else if (cb) {
cb();
}
},
/**
* Actually swap the components, depending on the
* transition mode. Defaults to simultaneous.
*
* @param {Vue} target
* @param {Function} [cb]
*/
transition: function transition(target, cb) {
var self = this;
var current = this.childVM;
// for devtool inspection
if (process.env.NODE_ENV !== 'production') {
if (current) current._inactive = true;
target._inactive = false;
}
this.childVM = target;
switch (self.params.transitionMode) {
case 'in-out':
target.$before(self.anchor, function () {
self.remove(current, cb);
});
break;
case 'out-in':
self.remove(current, function () {
target.$before(self.anchor, cb);
});
break;
default:
self.remove(current);
target.$before(self.anchor, cb);
}
},
/**
* Unbind.
*/
unbind: function unbind() {
this.invalidatePending();
// Do not defer cleanup when unbinding
this.unbuild();
// destroy all keep-alive cached instances
if (this.cache) {
for (var key in this.cache) {
this.cache[key].$destroy();
}
this.cache = null;
}
}
};
var vClass = {
deep: true,
update: function update(value) {
if (value && typeof value === 'string') {
this.handleObject(stringToObject(value));
} else if (isPlainObject(value)) {
this.handleObject(value);
} else if (isArray(value)) {
this.handleArray(value);
} else {
this.cleanup();
}
},
handleObject: function handleObject(value) {
this.cleanup(value);
var keys = this.prevKeys = Object.keys(value);
for (var i = 0, l = keys.length; i < l; i++) {
var key = keys[i];
if (value[key]) {
addClass(this.el, key);
} else {
removeClass(this.el, key);
}
}
},
handleArray: function handleArray(value) {
this.cleanup(value);
for (var i = 0, l = value.length; i < l; i++) {
if (value[i]) {
addClass(this.el, value[i]);
}
}
this.prevKeys = value.slice();
},
cleanup: function cleanup(value) {
if (this.prevKeys) {
var i = this.prevKeys.length;
while (i--) {
var key = this.prevKeys[i];
if (key && (!value || !contains$1(value, key))) {
removeClass(this.el, key);
}
}
}
}
};
function stringToObject(value) {
var res = {};
var keys = value.trim().split(/\s+/);
var i = keys.length;
while (i--) {
res[keys[i]] = true;
}
return res;
}
function contains$1(value, key) {
return isArray(value) ? value.indexOf(key) > -1 : hasOwn(value, key);
}
var internalDirectives = {
style: style,
'class': vClass,
component: component,
prop: propDef,
transition: transition
};
var propBindingModes = config._propBindingModes;
var empty = {};
// regexes
var identRE$1 = /^[$_a-zA-Z]+[\w$]*$/;
var settablePathRE = /^[A-Za-z_$][\w$]*(\.[A-Za-z_$][\w$]*|\[[^\[\]]+\])*$/;
/**
* Compile props on a root element and return
* a props link function.
*
* @param {Element|DocumentFragment} el
* @param {Array} propOptions
* @return {Function} propsLinkFn
*/
function compileProps(el, propOptions) {
var props = [];
var names = Object.keys(propOptions);
var i = names.length;
var options, name, attr, value, path, parsed, prop;
while (i--) {
name = names[i];
options = propOptions[name] || empty;
if (process.env.NODE_ENV !== 'production' && name === '$data') {
warn('Do not use $data as prop.');
continue;
}
// props could contain dashes, which will be
// interpreted as minus calculations by the parser
// so we need to camelize the path here
path = camelize(name);
if (!identRE$1.test(path)) {
process.env.NODE_ENV !== 'production' && warn('Invalid prop key: "' + name + '". Prop keys ' + 'must be valid identifiers.');
continue;
}
prop = {
name: name,
path: path,
options: options,
mode: propBindingModes.ONE_WAY,
raw: null
};
attr = hyphenate(name);
// first check dynamic version
if ((value = getBindAttr(el, attr)) === null) {
if ((value = getBindAttr(el, attr + '.sync')) !== null) {
prop.mode = propBindingModes.TWO_WAY;
} else if ((value = getBindAttr(el, attr + '.once')) !== null) {
prop.mode = propBindingModes.ONE_TIME;
}
}
if (value !== null) {
// has dynamic binding!
prop.raw = value;
parsed = parseDirective(value);
value = parsed.expression;
prop.filters = parsed.filters;
// check binding type
if (isLiteral(value) && !parsed.filters) {
// for expressions containing literal numbers and
// booleans, there's no need to setup a prop binding,
// so we can optimize them as a one-time set.
prop.optimizedLiteral = true;
} else {
prop.dynamic = true;
// check non-settable path for two-way bindings
if (process.env.NODE_ENV !== 'production' && prop.mode === propBindingModes.TWO_WAY && !settablePathRE.test(value)) {
prop.mode = propBindingModes.ONE_WAY;
warn('Cannot bind two-way prop with non-settable ' + 'parent path: ' + value);
}
}
prop.parentPath = value;
// warn required two-way
if (process.env.NODE_ENV !== 'production' && options.twoWay && prop.mode !== propBindingModes.TWO_WAY) {
warn('Prop "' + name + '" expects a two-way binding type.');
}
} else if ((value = getAttr(el, attr)) !== null) {
// has literal binding!
prop.raw = value;
} else if (options.required) {
// warn missing required
process.env.NODE_ENV !== 'production' && warn('Missing required prop: ' + name);
}
// push prop
props.push(prop);
}
return makePropsLinkFn(props);
}
/**
* Build a function that applies props to a vm.
*
* @param {Array} props
* @return {Function} propsLinkFn
*/
function makePropsLinkFn(props) {
return function propsLinkFn(vm, scope) {
// store resolved props info
vm._props = {};
var i = props.length;
var prop, path, options, value, raw;
while (i--) {
prop = props[i];
raw = prop.raw;
path = prop.path;
options = prop.options;
vm._props[path] = prop;
if (raw === null) {
// initialize absent prop
initProp(vm, prop, getDefault(vm, options));
} else if (prop.dynamic) {
// dynamic prop
if (vm._context) {
if (prop.mode === propBindingModes.ONE_TIME) {
// one time binding
value = (scope || vm._context).$get(prop.parentPath);
initProp(vm, prop, value);
} else {
// dynamic binding
vm._bindDir({
name: 'prop',
def: propDef,
prop: prop
}, null, null, scope); // el, host, scope
}
} else {
process.env.NODE_ENV !== 'production' && warn('Cannot bind dynamic prop on a root instance' + ' with no parent: ' + prop.name + '="' + raw + '"');
}
} else if (prop.optimizedLiteral) {
// optimized literal, cast it and just set once
var stripped = stripQuotes(raw);
value = stripped === raw ? toBoolean(toNumber(raw)) : stripped;
initProp(vm, prop, value);
} else {
// string literal, but we need to cater for
// Boolean props with no value
value = options.type === Boolean && raw === '' ? true : raw;
initProp(vm, prop, value);
}
}
};
}
/**
* Get the default value of a prop.
*
* @param {Vue} vm
* @param {Object} options
* @return {*}
*/
function getDefault(vm, options) {
// no default, return undefined
if (!hasOwn(options, 'default')) {
// absent boolean value defaults to false
return options.type === Boolean ? false : undefined;
}
var def = options['default'];
// warn against non-factory defaults for Object & Array
if (isObject(def)) {
process.env.NODE_ENV !== 'production' && warn('Object/Array as default prop values will be shared ' + 'across multiple instances. Use a factory function ' + 'to return the default value instead.');
}
// call factory function for non-Function types
return typeof def === 'function' && options.type !== Function ? def.call(vm) : def;
}
// special binding prefixes
var bindRE = /^v-bind:|^:/;
var onRE = /^v-on:|^@/;
var argRE = /:(.*)$/;
var modifierRE = /\.[^\.]+/g;
var transitionRE = /^(v-bind:|:)?transition$/;
// terminal directives
var terminalDirectives = ['for', 'if'];
// default directive priority
var DEFAULT_PRIORITY = 1000;
/**
* Compile a template and return a reusable composite link
* function, which recursively contains more link functions
* inside. This top level compile function would normally
* be called on instance root nodes, but can also be used
* for partial compilation if the partial argument is true.
*
* The returned composite link function, when called, will
* return an unlink function that tearsdown all directives
* created during the linking phase.
*
* @param {Element|DocumentFragment} el
* @param {Object} options
* @param {Boolean} partial
* @return {Function}
*/
function compile(el, options, partial) {
// link function for the node itself.
var nodeLinkFn = partial || !options._asComponent ? compileNode(el, options) : null;
// link function for the childNodes
var childLinkFn = !(nodeLinkFn && nodeLinkFn.terminal) && el.tagName !== 'SCRIPT' && el.hasChildNodes() ? compileNodeList(el.childNodes, options) : null;
/**
* A composite linker function to be called on a already
* compiled piece of DOM, which instantiates all directive
* instances.
*
* @param {Vue} vm
* @param {Element|DocumentFragment} el
* @param {Vue} [host] - host vm of transcluded content
* @param {Object} [scope] - v-for scope
* @param {Fragment} [frag] - link context fragment
* @return {Function|undefined}
*/
return function compositeLinkFn(vm, el, host, scope, frag) {
// cache childNodes before linking parent, fix #657
var childNodes = toArray(el.childNodes);
// link
var dirs = linkAndCapture(function compositeLinkCapturer() {
if (nodeLinkFn) nodeLinkFn(vm, el, host, scope, frag);
if (childLinkFn) childLinkFn(vm, childNodes, host, scope, frag);
}, vm);
return makeUnlinkFn(vm, dirs);
};
}
/**
* Apply a linker to a vm/element pair and capture the
* directives created during the process.
*
* @param {Function} linker
* @param {Vue} vm
*/
function linkAndCapture(linker, vm) {
var originalDirCount = vm._directives.length;
linker();
var dirs = vm._directives.slice(originalDirCount);
dirs.sort(directiveComparator);
for (var i = 0, l = dirs.length; i < l; i++) {
dirs[i]._bind();
}
return dirs;
}
/**
* Directive priority sort comparator
*
* @param {Object} a
* @param {Object} b
*/
function directiveComparator(a, b) {
a = a.descriptor.def.priority || DEFAULT_PRIORITY;
b = b.descriptor.def.priority || DEFAULT_PRIORITY;
return a > b ? -1 : a === b ? 0 : 1;
}
/**
* Linker functions return an unlink function that
* tearsdown all directives instances generated during
* the process.
*
* We create unlink functions with only the necessary
* information to avoid retaining additional closures.
*
* @param {Vue} vm
* @param {Array} dirs
* @param {Vue} [context]
* @param {Array} [contextDirs]
* @return {Function}
*/
function makeUnlinkFn(vm, dirs, context, contextDirs) {
function unlink(destroying) {
teardownDirs(vm, dirs, destroying);
if (context && contextDirs) {
teardownDirs(context, contextDirs);
}
}
// expose linked directives
unlink.dirs = dirs;
return unlink;
}
/**
* Teardown partial linked directives.
*
* @param {Vue} vm
* @param {Array} dirs
* @param {Boolean} destroying
*/
function teardownDirs(vm, dirs, destroying) {
var i = dirs.length;
while (i--) {
dirs[i]._teardown();
if (!destroying) {
vm._directives.$remove(dirs[i]);
}
}
}
/**
* Compile link props on an instance.
*
* @param {Vue} vm
* @param {Element} el
* @param {Object} props
* @param {Object} [scope]
* @return {Function}
*/
function compileAndLinkProps(vm, el, props, scope) {
var propsLinkFn = compileProps(el, props);
var propDirs = linkAndCapture(function () {
propsLinkFn(vm, scope);
}, vm);
return makeUnlinkFn(vm, propDirs);
}
/**
* Compile the root element of an instance.
*
* 1. attrs on context container (context scope)
* 2. attrs on the component template root node, if
* replace:true (child scope)
*
* If this is a fragment instance, we only need to compile 1.
*
* @param {Vue} vm
* @param {Element} el
* @param {Object} options
* @param {Object} contextOptions
* @return {Function}
*/
function compileRoot(el, options, contextOptions) {
var containerAttrs = options._containerAttrs;
var replacerAttrs = options._replacerAttrs;
var contextLinkFn, replacerLinkFn;
// only need to compile other attributes for
// non-fragment instances
if (el.nodeType !== 11) {
// for components, container and replacer need to be
// compiled separately and linked in different scopes.
if (options._asComponent) {
// 2. container attributes
if (containerAttrs && contextOptions) {
contextLinkFn = compileDirectives(containerAttrs, contextOptions);
}
if (replacerAttrs) {
// 3. replacer attributes
replacerLinkFn = compileDirectives(replacerAttrs, options);
}
} else {
// non-component, just compile as a normal element.
replacerLinkFn = compileDirectives(el.attributes, options);
}
} else if (process.env.NODE_ENV !== 'production' && containerAttrs) {
// warn container directives for fragment instances
var names = containerAttrs.filter(function (attr) {
// allow vue-loader/vueify scoped css attributes
return attr.name.indexOf('_v-') < 0 &&
// allow event listeners
!onRE.test(attr.name) &&
// allow slots
attr.name !== 'slot';
}).map(function (attr) {
return '"' + attr.name + '"';
});
if (names.length) {
var plural = names.length > 1;
warn('Attribute' + (plural ? 's ' : ' ') + names.join(', ') + (plural ? ' are' : ' is') + ' ignored on component ' + '<' + options.el.tagName.toLowerCase() + '> because ' + 'the component is a fragment instance: ' + 'http://vuejs.org/guide/components.html#Fragment_Instance');
}
}
options._containerAttrs = options._replacerAttrs = null;
return function rootLinkFn(vm, el, scope) {
// link context scope dirs
var context = vm._context;
var contextDirs;
if (context && contextLinkFn) {
contextDirs = linkAndCapture(function () {
contextLinkFn(context, el, null, scope);
}, context);
}
// link self
var selfDirs = linkAndCapture(function () {
if (replacerLinkFn) replacerLinkFn(vm, el);
}, vm);
// return the unlink function that tearsdown context
// container directives.
return makeUnlinkFn(vm, selfDirs, context, contextDirs);
};
}
/**
* Compile a node and return a nodeLinkFn based on the
* node type.
*
* @param {Node} node
* @param {Object} options
* @return {Function|null}
*/
function compileNode(node, options) {
var type = node.nodeType;
if (type === 1 && node.tagName !== 'SCRIPT') {
return compileElement(node, options);
} else if (type === 3 && node.data.trim()) {
return compileTextNode(node, options);
} else {
return null;
}
}
/**
* Compile an element and return a nodeLinkFn.
*
* @param {Element} el
* @param {Object} options
* @return {Function|null}
*/
function compileElement(el, options) {
// preprocess textareas.
// textarea treats its text content as the initial value.
// just bind it as an attr directive for value.
if (el.tagName === 'TEXTAREA') {
var tokens = parseText(el.value);
if (tokens) {
el.setAttribute(':value', tokensToExp(tokens));
el.value = '';
}
}
var linkFn;
var hasAttrs = el.hasAttributes();
// check terminal directives (for & if)
if (hasAttrs) {
linkFn = checkTerminalDirectives(el, options);
}
// check element directives
if (!linkFn) {
linkFn = checkElementDirectives(el, options);
}
// check component
if (!linkFn) {
linkFn = checkComponent(el, options);
}
// normal directives
if (!linkFn && hasAttrs) {
linkFn = compileDirectives(el.attributes, options);
}
return linkFn;
}
/**
* Compile a textNode and return a nodeLinkFn.
*
* @param {TextNode} node
* @param {Object} options
* @return {Function|null} textNodeLinkFn
*/
function compileTextNode(node, options) {
// skip marked text nodes
if (node._skip) {
return removeText;
}
var tokens = parseText(node.wholeText);
if (!tokens) {
return null;
}
// mark adjacent text nodes as skipped,
// because we are using node.wholeText to compile
// all adjacent text nodes together. This fixes
// issues in IE where sometimes it splits up a single
// text node into multiple ones.
var next = node.nextSibling;
while (next && next.nodeType === 3) {
next._skip = true;
next = next.nextSibling;
}
var frag = document.createDocumentFragment();
var el, token;
for (var i = 0, l = tokens.length; i < l; i++) {
token = tokens[i];
el = token.tag ? processTextToken(token, options) : document.createTextNode(token.value);
frag.appendChild(el);
}
return makeTextNodeLinkFn(tokens, frag, options);
}
/**
* Linker for an skipped text node.
*
* @param {Vue} vm
* @param {Text} node
*/
function removeText(vm, node) {
remove(node);
}
/**
* Process a single text token.
*
* @param {Object} token
* @param {Object} options
* @return {Node}
*/
function processTextToken(token, options) {
var el;
if (token.oneTime) {
el = document.createTextNode(token.value);
} else {
if (token.html) {
el = document.createComment('v-html');
setTokenType('html');
} else {
// IE will clean up empty textNodes during
// frag.cloneNode(true), so we have to give it
// something here...
el = document.createTextNode(' ');
setTokenType('text');
}
}
function setTokenType(type) {
if (token.descriptor) return;
var parsed = parseDirective(token.value);
token.descriptor = {
name: type,
def: publicDirectives[type],
expression: parsed.expression,
filters: parsed.filters
};
}
return el;
}
/**
* Build a function that processes a textNode.
*
* @param {Array<Object>} tokens
* @param {DocumentFragment} frag
*/
function makeTextNodeLinkFn(tokens, frag) {
return function textNodeLinkFn(vm, el, host, scope) {
var fragClone = frag.cloneNode(true);
var childNodes = toArray(fragClone.childNodes);
var token, value, node;
for (var i = 0, l = tokens.length; i < l; i++) {
token = tokens[i];
value = token.value;
if (token.tag) {
node = childNodes[i];
if (token.oneTime) {
value = (scope || vm).$eval(value);
if (token.html) {
replace(node, parseTemplate(value, true));
} else {
node.data = value;
}
} else {
vm._bindDir(token.descriptor, node, host, scope);
}
}
}
replace(el, fragClone);
};
}
/**
* Compile a node list and return a childLinkFn.
*
* @param {NodeList} nodeList
* @param {Object} options
* @return {Function|undefined}
*/
function compileNodeList(nodeList, options) {
var linkFns = [];
var nodeLinkFn, childLinkFn, node;
for (var i = 0, l = nodeList.length; i < l; i++) {
node = nodeList[i];
nodeLinkFn = compileNode(node, options);
childLinkFn = !(nodeLinkFn && nodeLinkFn.terminal) && node.tagName !== 'SCRIPT' && node.hasChildNodes() ? compileNodeList(node.childNodes, options) : null;
linkFns.push(nodeLinkFn, childLinkFn);
}
return linkFns.length ? makeChildLinkFn(linkFns) : null;
}
/**
* Make a child link function for a node's childNodes.
*
* @param {Array<Function>} linkFns
* @return {Function} childLinkFn
*/
function makeChildLinkFn(linkFns) {
return function childLinkFn(vm, nodes, host, scope, frag) {
var node, nodeLinkFn, childrenLinkFn;
for (var i = 0, n = 0, l = linkFns.length; i < l; n++) {
node = nodes[n];
nodeLinkFn = linkFns[i++];
childrenLinkFn = linkFns[i++];
// cache childNodes before linking parent, fix #657
var childNodes = toArray(node.childNodes);
if (nodeLinkFn) {
nodeLinkFn(vm, node, host, scope, frag);
}
if (childrenLinkFn) {
childrenLinkFn(vm, childNodes, host, scope, frag);
}
}
};
}
/**
* Check for element directives (custom elements that should
* be resovled as terminal directives).
*
* @param {Element} el
* @param {Object} options
*/
function checkElementDirectives(el, options) {
var tag = el.tagName.toLowerCase();
if (commonTagRE.test(tag)) return;
// special case: give named slot a higher priority
// than unnamed slots
if (tag === 'slot' && hasBindAttr(el, 'name')) {
tag = '_namedSlot';
}
var def = resolveAsset(options, 'elementDirectives', tag);
if (def) {
return makeTerminalNodeLinkFn(el, tag, '', options, def);
}
}
/**
* Check if an element is a component. If yes, return
* a component link function.
*
* @param {Element} el
* @param {Object} options
* @return {Function|undefined}
*/
function checkComponent(el, options) {
var component = checkComponentAttr(el, options);
if (component) {
var ref = findRef(el);
var descriptor = {
name: 'component',
ref: ref,
expression: component.id,
def: internalDirectives.component,
modifiers: {
literal: !component.dynamic
}
};
var componentLinkFn = function componentLinkFn(vm, el, host, scope, frag) {
if (ref) {
defineReactive((scope || vm).$refs, ref, null);
}
vm._bindDir(descriptor, el, host, scope, frag);
};
componentLinkFn.terminal = true;
return componentLinkFn;
}
}
/**
* Check an element for terminal directives in fixed order.
* If it finds one, return a terminal link function.
*
* @param {Element} el
* @param {Object} options
* @return {Function} terminalLinkFn
*/
function checkTerminalDirectives(el, options) {
// skip v-pre
if (getAttr(el, 'v-pre') !== null) {
return skip;
}
// skip v-else block, but only if following v-if
if (el.hasAttribute('v-else')) {
var prev = el.previousElementSibling;
if (prev && prev.hasAttribute('v-if')) {
return skip;
}
}
var value, dirName;
for (var i = 0, l = terminalDirectives.length; i < l; i++) {
dirName = terminalDirectives[i];
value = el.getAttribute('v-' + dirName);
if (value != null) {
return makeTerminalNodeLinkFn(el, dirName, value, options);
}
}
}
function skip() {}
skip.terminal = true;
/**
* Build a node link function for a terminal directive.
* A terminal link function terminates the current
* compilation recursion and handles compilation of the
* subtree in the directive.
*
* @param {Element} el
* @param {String} dirName
* @param {String} value
* @param {Object} options
* @param {Object} [def]
* @return {Function} terminalLinkFn
*/
function makeTerminalNodeLinkFn(el, dirName, value, options, def) {
var parsed = parseDirective(value);
var descriptor = {
name: dirName,
expression: parsed.expression,
filters: parsed.filters,
raw: value,
// either an element directive, or if/for
def: def || publicDirectives[dirName]
};
// check ref for v-for and router-view
if (dirName === 'for' || dirName === 'router-view') {
descriptor.ref = findRef(el);
}
var fn = function terminalNodeLinkFn(vm, el, host, scope, frag) {
if (descriptor.ref) {
defineReactive((scope || vm).$refs, descriptor.ref, null);
}
vm._bindDir(descriptor, el, host, scope, frag);
};
fn.terminal = true;
return fn;
}
/**
* Compile the directives on an element and return a linker.
*
* @param {Array|NamedNodeMap} attrs
* @param {Object} options
* @return {Function}
*/
function compileDirectives(attrs, options) {
var i = attrs.length;
var dirs = [];
var attr, name, value, rawName, rawValue, dirName, arg, modifiers, dirDef, tokens;
while (i--) {
attr = attrs[i];
name = rawName = attr.name;
value = rawValue = attr.value;
tokens = parseText(value);
// reset arg
arg = null;
// check modifiers
modifiers = parseModifiers(name);
name = name.replace(modifierRE, '');
// attribute interpolations
if (tokens) {
value = tokensToExp(tokens);
arg = name;
pushDir('bind', publicDirectives.bind, tokens);
// warn against mixing mustaches with v-bind
if (process.env.NODE_ENV !== 'production') {
if (name === 'class' && Array.prototype.some.call(attrs, function (attr) {
return attr.name === ':class' || attr.name === 'v-bind:class';
})) {
warn('class="' + rawValue + '": Do not mix mustache interpolation ' + 'and v-bind for "class" on the same element. Use one or the other.');
}
}
} else
// special attribute: transition
if (transitionRE.test(name)) {
modifiers.literal = !bindRE.test(name);
pushDir('transition', internalDirectives.transition);
} else
// event handlers
if (onRE.test(name)) {
arg = name.replace(onRE, '');
pushDir('on', publicDirectives.on);
} else
// attribute bindings
if (bindRE.test(name)) {
dirName = name.replace(bindRE, '');
if (dirName === 'style' || dirName === 'class') {
pushDir(dirName, internalDirectives[dirName]);
} else {
arg = dirName;
pushDir('bind', publicDirectives.bind);
}
} else
// normal directives
if (name.indexOf('v-') === 0) {
// check arg
arg = (arg = name.match(argRE)) && arg[1];
if (arg) {
name = name.replace(argRE, '');
}
// extract directive name
dirName = name.slice(2);
// skip v-else (when used with v-show)
if (dirName === 'else') {
continue;
}
dirDef = resolveAsset(options, 'directives', dirName);
if (process.env.NODE_ENV !== 'production') {
assertAsset(dirDef, 'directive', dirName);
}
if (dirDef) {
pushDir(dirName, dirDef);
}
}
}
/**
* Push a directive.
*
* @param {String} dirName
* @param {Object|Function} def
* @param {Array} [interpTokens]
*/
function pushDir(dirName, def, interpTokens) {
var hasOneTimeToken = interpTokens && hasOneTime(interpTokens);
var parsed = !hasOneTimeToken && parseDirective(value);
dirs.push({
name: dirName,
attr: rawName,
raw: rawValue,
def: def,
arg: arg,
modifiers: modifiers,
// conversion from interpolation strings with one-time token
// to expression is differed until directive bind time so that we
// have access to the actual vm context for one-time bindings.
expression: parsed && parsed.expression,
filters: parsed && parsed.filters,
interp: interpTokens,
hasOneTime: hasOneTimeToken
});
}
if (dirs.length) {
return makeNodeLinkFn(dirs);
}
}
/**
* Parse modifiers from directive attribute name.
*
* @param {String} name
* @return {Object}
*/
function parseModifiers(name) {
var res = Object.create(null);
var match = name.match(modifierRE);
if (match) {
var i = match.length;
while (i--) {
res[match[i].slice(1)] = true;
}
}
return res;
}
/**
* Build a link function for all directives on a single node.
*
* @param {Array} directives
* @return {Function} directivesLinkFn
*/
function makeNodeLinkFn(directives) {
return function nodeLinkFn(vm, el, host, scope, frag) {
// reverse apply because it's sorted low to high
var i = directives.length;
while (i--) {
vm._bindDir(directives[i], el, host, scope, frag);
}
};
}
/**
* Check if an interpolation string contains one-time tokens.
*
* @param {Array} tokens
* @return {Boolean}
*/
function hasOneTime(tokens) {
var i = tokens.length;
while (i--) {
if (tokens[i].oneTime) return true;
}
}
var specialCharRE = /[^\w\-:\.]/;
/**
* Process an element or a DocumentFragment based on a
* instance option object. This allows us to transclude
* a template node/fragment before the instance is created,
* so the processed fragment can then be cloned and reused
* in v-for.
*
* @param {Element} el
* @param {Object} options
* @return {Element|DocumentFragment}
*/
function transclude(el, options) {
// extract container attributes to pass them down
// to compiler, because they need to be compiled in
// parent scope. we are mutating the options object here
// assuming the same object will be used for compile
// right after this.
if (options) {
options._containerAttrs = extractAttrs(el);
}
// for template tags, what we want is its content as
// a documentFragment (for fragment instances)
if (isTemplate(el)) {
el = parseTemplate(el);
}
if (options) {
if (options._asComponent && !options.template) {
options.template = '<slot></slot>';
}
if (options.template) {
options._content = extractContent(el);
el = transcludeTemplate(el, options);
}
}
if (el instanceof DocumentFragment) {
// anchors for fragment instance
// passing in `persist: true` to avoid them being
// discarded by IE during template cloning
prepend(createAnchor('v-start', true), el);
el.appendChild(createAnchor('v-end', true));
}
return el;
}
/**
* Process the template option.
* If the replace option is true this will swap the $el.
*
* @param {Element} el
* @param {Object} options
* @return {Element|DocumentFragment}
*/
function transcludeTemplate(el, options) {
var template = options.template;
var frag = parseTemplate(template, true);
if (frag) {
var replacer = frag.firstChild;
var tag = replacer.tagName && replacer.tagName.toLowerCase();
if (options.replace) {
/* istanbul ignore if */
if (el === document.body) {
process.env.NODE_ENV !== 'production' && warn('You are mounting an instance with a template to ' + '<body>. This will replace <body> entirely. You ' + 'should probably use `replace: false` here.');
}
// there are many cases where the instance must
// become a fragment instance: basically anything that
// can create more than 1 root nodes.
if (
// multi-children template
frag.childNodes.length > 1 ||
// non-element template
replacer.nodeType !== 1 ||
// single nested component
tag === 'component' || resolveAsset(options, 'components', tag) || hasBindAttr(replacer, 'is') ||
// element directive
resolveAsset(options, 'elementDirectives', tag) ||
// for block
replacer.hasAttribute('v-for') ||
// if block
replacer.hasAttribute('v-if')) {
return frag;
} else {
options._replacerAttrs = extractAttrs(replacer);
mergeAttrs(el, replacer);
return replacer;
}
} else {
el.appendChild(frag);
return el;
}
} else {
process.env.NODE_ENV !== 'production' && warn('Invalid template option: ' + template);
}
}
/**
* Helper to extract a component container's attributes
* into a plain object array.
*
* @param {Element} el
* @return {Array}
*/
function extractAttrs(el) {
if (el.nodeType === 1 && el.hasAttributes()) {
return toArray(el.attributes);
}
}
/**
* Merge the attributes of two elements, and make sure
* the class names are merged properly.
*
* @param {Element} from
* @param {Element} to
*/
function mergeAttrs(from, to) {
var attrs = from.attributes;
var i = attrs.length;
var name, value;
while (i--) {
name = attrs[i].name;
value = attrs[i].value;
if (!to.hasAttribute(name) && !specialCharRE.test(name)) {
to.setAttribute(name, value);
} else if (name === 'class' && !parseText(value)) {
value.split(/\s+/).forEach(function (cls) {
addClass(to, cls);
});
}
}
}
var compiler = Object.freeze({
compile: compile,
compileAndLinkProps: compileAndLinkProps,
compileRoot: compileRoot,
terminalDirectives: terminalDirectives,
transclude: transclude
});
function stateMixin (Vue) {
/**
* Accessor for `$data` property, since setting $data
* requires observing the new object and updating
* proxied properties.
*/
Object.defineProperty(Vue.prototype, '$data', {
get: function get() {
return this._data;
},
set: function set(newData) {
if (newData !== this._data) {
this._setData(newData);
}
}
});
/**
* Setup the scope of an instance, which contains:
* - observed data
* - computed properties
* - user methods
* - meta properties
*/
Vue.prototype._initState = function () {
this._initProps();
this._initMeta();
this._initMethods();
this._initData();
this._initComputed();
};
/**
* Initialize props.
*/
Vue.prototype._initProps = function () {
var options = this.$options;
var el = options.el;
var props = options.props;
if (props && !el) {
process.env.NODE_ENV !== 'production' && warn('Props will not be compiled if no `el` option is ' + 'provided at instantiation.');
}
// make sure to convert string selectors into element now
el = options.el = query(el);
this._propsUnlinkFn = el && el.nodeType === 1 && props
// props must be linked in proper scope if inside v-for
? compileAndLinkProps(this, el, props, this._scope) : null;
};
/**
* Initialize the data.
*/
Vue.prototype._initData = function () {
var propsData = this._data;
var optionsDataFn = this.$options.data;
var optionsData = optionsDataFn && optionsDataFn();
if (optionsData) {
this._data = optionsData;
for (var prop in propsData) {
if (process.env.NODE_ENV !== 'production' && hasOwn(optionsData, prop)) {
warn('Data field "' + prop + '" is already defined ' + 'as a prop. Use prop default value instead.');
}
if (this._props[prop].raw !== null || !hasOwn(optionsData, prop)) {
set(optionsData, prop, propsData[prop]);
}
}
}
var data = this._data;
// proxy data on instance
var keys = Object.keys(data);
var i, key;
i = keys.length;
while (i--) {
key = keys[i];
this._proxy(key);
}
// observe data
observe(data, this);
};
/**
* Swap the instance's $data. Called in $data's setter.
*
* @param {Object} newData
*/
Vue.prototype._setData = function (newData) {
newData = newData || {};
var oldData = this._data;
this._data = newData;
var keys, key, i;
// unproxy keys not present in new data
keys = Object.keys(oldData);
i = keys.length;
while (i--) {
key = keys[i];
if (!(key in newData)) {
this._unproxy(key);
}
}
// proxy keys not already proxied,
// and trigger change for changed values
keys = Object.keys(newData);
i = keys.length;
while (i--) {
key = keys[i];
if (!hasOwn(this, key)) {
// new property
this._proxy(key);
}
}
oldData.__ob__.removeVm(this);
observe(newData, this);
this._digest();
};
/**
* Proxy a property, so that
* vm.prop === vm._data.prop
*
* @param {String} key
*/
Vue.prototype._proxy = function (key) {
if (!isReserved(key)) {
// need to store ref to self here
// because these getter/setters might
// be called by child scopes via
// prototype inheritance.
var self = this;
Object.defineProperty(self, key, {
configurable: true,
enumerable: true,
get: function proxyGetter() {
return self._data[key];
},
set: function proxySetter(val) {
self._data[key] = val;
}
});
}
};
/**
* Unproxy a property.
*
* @param {String} key
*/
Vue.prototype._unproxy = function (key) {
if (!isReserved(key)) {
delete this[key];
}
};
/**
* Force update on every watcher in scope.
*/
Vue.prototype._digest = function () {
for (var i = 0, l = this._watchers.length; i < l; i++) {
this._watchers[i].update(true); // shallow updates
}
};
/**
* Setup computed properties. They are essentially
* special getter/setters
*/
function noop() {}
Vue.prototype._initComputed = function () {
var computed = this.$options.computed;
if (computed) {
for (var key in computed) {
var userDef = computed[key];
var def = {
enumerable: true,
configurable: true
};
if (typeof userDef === 'function') {
def.get = makeComputedGetter(userDef, this);
def.set = noop;
} else {
def.get = userDef.get ? userDef.cache !== false ? makeComputedGetter(userDef.get, this) : bind$1(userDef.get, this) : noop;
def.set = userDef.set ? bind$1(userDef.set, this) : noop;
}
Object.defineProperty(this, key, def);
}
}
};
function makeComputedGetter(getter, owner) {
var watcher = new Watcher(owner, getter, null, {
lazy: true
});
return function computedGetter() {
if (watcher.dirty) {
watcher.evaluate();
}
if (Dep.target) {
watcher.depend();
}
return watcher.value;
};
}
/**
* Setup instance methods. Methods must be bound to the
* instance since they might be passed down as a prop to
* child components.
*/
Vue.prototype._initMethods = function () {
var methods = this.$options.methods;
if (methods) {
for (var key in methods) {
this[key] = bind$1(methods[key], this);
}
}
};
/**
* Initialize meta information like $index, $key & $value.
*/
Vue.prototype._initMeta = function () {
var metas = this.$options._meta;
if (metas) {
for (var key in metas) {
defineReactive(this, key, metas[key]);
}
}
};
}
var eventRE = /^v-on:|^@/;
function eventsMixin (Vue) {
/**
* Setup the instance's option events & watchers.
* If the value is a string, we pull it from the
* instance's methods by name.
*/
Vue.prototype._initEvents = function () {
var options = this.$options;
if (options._asComponent) {
registerComponentEvents(this, options.el);
}
registerCallbacks(this, '$on', options.events);
registerCallbacks(this, '$watch', options.watch);
};
/**
* Register v-on events on a child component
*
* @param {Vue} vm
* @param {Element} el
*/
function registerComponentEvents(vm, el) {
var attrs = el.attributes;
var name, handler;
for (var i = 0, l = attrs.length; i < l; i++) {
name = attrs[i].name;
if (eventRE.test(name)) {
name = name.replace(eventRE, '');
handler = (vm._scope || vm._context).$eval(attrs[i].value, true);
handler._fromParent = true;
vm.$on(name.replace(eventRE), handler);
}
}
}
/**
* Register callbacks for option events and watchers.
*
* @param {Vue} vm
* @param {String} action
* @param {Object} hash
*/
function registerCallbacks(vm, action, hash) {
if (!hash) return;
var handlers, key, i, j;
for (key in hash) {
handlers = hash[key];
if (isArray(handlers)) {
for (i = 0, j = handlers.length; i < j; i++) {
register(vm, action, key, handlers[i]);
}
} else {
register(vm, action, key, handlers);
}
}
}
/**
* Helper to register an event/watch callback.
*
* @param {Vue} vm
* @param {String} action
* @param {String} key
* @param {Function|String|Object} handler
* @param {Object} [options]
*/
function register(vm, action, key, handler, options) {
var type = typeof handler;
if (type === 'function') {
vm[action](key, handler, options);
} else if (type === 'string') {
var methods = vm.$options.methods;
var method = methods && methods[handler];
if (method) {
vm[action](key, method, options);
} else {
process.env.NODE_ENV !== 'production' && warn('Unknown method: "' + handler + '" when ' + 'registering callback for ' + action + ': "' + key + '".');
}
} else if (handler && type === 'object') {
register(vm, action, key, handler.handler, handler);
}
}
/**
* Setup recursive attached/detached calls
*/
Vue.prototype._initDOMHooks = function () {
this.$on('hook:attached', onAttached);
this.$on('hook:detached', onDetached);
};
/**
* Callback to recursively call attached hook on children
*/
function onAttached() {
if (!this._isAttached) {
this._isAttached = true;
this.$children.forEach(callAttach);
}
}
/**
* Iterator to call attached hook
*
* @param {Vue} child
*/
function callAttach(child) {
if (!child._isAttached && inDoc(child.$el)) {
child._callHook('attached');
}
}
/**
* Callback to recursively call detached hook on children
*/
function onDetached() {
if (this._isAttached) {
this._isAttached = false;
this.$children.forEach(callDetach);
}
}
/**
* Iterator to call detached hook
*
* @param {Vue} child
*/
function callDetach(child) {
if (child._isAttached && !inDoc(child.$el)) {
child._callHook('detached');
}
}
/**
* Trigger all handlers for a hook
*
* @param {String} hook
*/
Vue.prototype._callHook = function (hook) {
this.$emit('pre-hook:' + hook);
var handlers = this.$options[hook];
if (handlers) {
for (var i = 0, j = handlers.length; i < j; i++) {
handlers[i].call(this);
}
}
this.$emit('hook:' + hook);
};
}
function noop() {}
/**
* A directive links a DOM element with a piece of data,
* which is the result of evaluating an expression.
* It registers a watcher with the expression and calls
* the DOM update function when a change is triggered.
*
* @param {String} name
* @param {Node} el
* @param {Vue} vm
* @param {Object} descriptor
* - {String} name
* - {Object} def
* - {String} expression
* - {Array<Object>} [filters]
* - {Boolean} literal
* - {String} attr
* - {String} raw
* @param {Object} def - directive definition object
* @param {Vue} [host] - transclusion host component
* @param {Object} [scope] - v-for scope
* @param {Fragment} [frag] - owner fragment
* @constructor
*/
function Directive(descriptor, vm, el, host, scope, frag) {
this.vm = vm;
this.el = el;
// copy descriptor properties
this.descriptor = descriptor;
this.name = descriptor.name;
this.expression = descriptor.expression;
this.arg = descriptor.arg;
this.modifiers = descriptor.modifiers;
this.filters = descriptor.filters;
this.literal = this.modifiers && this.modifiers.literal;
// private
this._locked = false;
this._bound = false;
this._listeners = null;
// link context
this._host = host;
this._scope = scope;
this._frag = frag;
// store directives on node in dev mode
if (process.env.NODE_ENV !== 'production' && this.el) {
this.el._vue_directives = this.el._vue_directives || [];
this.el._vue_directives.push(this);
}
}
/**
* Initialize the directive, mixin definition properties,
* setup the watcher, call definition bind() and update()
* if present.
*
* @param {Object} def
*/
Directive.prototype._bind = function () {
var name = this.name;
var descriptor = this.descriptor;
// remove attribute
if ((name !== 'cloak' || this.vm._isCompiled) && this.el && this.el.removeAttribute) {
var attr = descriptor.attr || 'v-' + name;
this.el.removeAttribute(attr);
}
// copy def properties
var def = descriptor.def;
if (typeof def === 'function') {
this.update = def;
} else {
extend(this, def);
}
// setup directive params
this._setupParams();
// initial bind
if (this.bind) {
this.bind();
}
this._bound = true;
if (this.literal) {
this.update && this.update(descriptor.raw);
} else if ((this.expression || this.modifiers) && (this.update || this.twoWay) && !this._checkStatement()) {
// wrapped updater for context
var dir = this;
if (this.update) {
this._update = function (val, oldVal) {
if (!dir._locked) {
dir.update(val, oldVal);
}
};
} else {
this._update = noop;
}
var preProcess = this._preProcess ? bind$1(this._preProcess, this) : null;
var postProcess = this._postProcess ? bind$1(this._postProcess, this) : null;
var watcher = this._watcher = new Watcher(this.vm, this.expression, this._update, // callback
{
filters: this.filters,
twoWay: this.twoWay,
deep: this.deep,
preProcess: preProcess,
postProcess: postProcess,
scope: this._scope
});
// v-model with inital inline value need to sync back to
// model instead of update to DOM on init. They would
// set the afterBind hook to indicate that.
if (this.afterBind) {
this.afterBind();
} else if (this.update) {
this.update(watcher.value);
}
}
};
/**
* Setup all param attributes, e.g. track-by,
* transition-mode, etc...
*/
Directive.prototype._setupParams = function () {
if (!this.params) {
return;
}
var params = this.params;
// swap the params array with a fresh object.
this.params = Object.create(null);
var i = params.length;
var key, val, mappedKey;
while (i--) {
key = params[i];
mappedKey = camelize(key);
val = getBindAttr(this.el, key);
if (val != null) {
// dynamic
this._setupParamWatcher(mappedKey, val);
} else {
// static
val = getAttr(this.el, key);
if (val != null) {
this.params[mappedKey] = val === '' ? true : val;
}
}
}
};
/**
* Setup a watcher for a dynamic param.
*
* @param {String} key
* @param {String} expression
*/
Directive.prototype._setupParamWatcher = function (key, expression) {
var self = this;
var called = false;
var unwatch = (this._scope || this.vm).$watch(expression, function (val, oldVal) {
self.params[key] = val;
// since we are in immediate mode,
// only call the param change callbacks if this is not the first update.
if (called) {
var cb = self.paramWatchers && self.paramWatchers[key];
if (cb) {
cb.call(self, val, oldVal);
}
} else {
called = true;
}
}, {
immediate: true,
user: false
});(this._paramUnwatchFns || (this._paramUnwatchFns = [])).push(unwatch);
};
/**
* Check if the directive is a function caller
* and if the expression is a callable one. If both true,
* we wrap up the expression and use it as the event
* handler.
*
* e.g. on-click="a++"
*
* @return {Boolean}
*/
Directive.prototype._checkStatement = function () {
var expression = this.expression;
if (expression && this.acceptStatement && !isSimplePath(expression)) {
var fn = parseExpression(expression).get;
var scope = this._scope || this.vm;
var handler = function handler(e) {
scope.$event = e;
fn.call(scope, scope);
scope.$event = null;
};
if (this.filters) {
handler = scope._applyFilters(handler, null, this.filters);
}
this.update(handler);
return true;
}
};
/**
* Set the corresponding value with the setter.
* This should only be used in two-way directives
* e.g. v-model.
*
* @param {*} value
* @public
*/
Directive.prototype.set = function (value) {
/* istanbul ignore else */
if (this.twoWay) {
this._withLock(function () {
this._watcher.set(value);
});
} else if (process.env.NODE_ENV !== 'production') {
warn('Directive.set() can only be used inside twoWay' + 'directives.');
}
};
/**
* Execute a function while preventing that function from
* triggering updates on this directive instance.
*
* @param {Function} fn
*/
Directive.prototype._withLock = function (fn) {
var self = this;
self._locked = true;
fn.call(self);
nextTick(function () {
self._locked = false;
});
};
/**
* Convenience method that attaches a DOM event listener
* to the directive element and autometically tears it down
* during unbind.
*
* @param {String} event
* @param {Function} handler
*/
Directive.prototype.on = function (event, handler) {
on$1(this.el, event, handler);(this._listeners || (this._listeners = [])).push([event, handler]);
};
/**
* Teardown the watcher and call unbind.
*/
Directive.prototype._teardown = function () {
if (this._bound) {
this._bound = false;
if (this.unbind) {
this.unbind();
}
if (this._watcher) {
this._watcher.teardown();
}
var listeners = this._listeners;
var i;
if (listeners) {
i = listeners.length;
while (i--) {
off(this.el, listeners[i][0], listeners[i][1]);
}
}
var unwatchFns = this._paramUnwatchFns;
if (unwatchFns) {
i = unwatchFns.length;
while (i--) {
unwatchFns[i]();
}
}
if (process.env.NODE_ENV !== 'production' && this.el) {
this.el._vue_directives.$remove(this);
}
this.vm = this.el = this._watcher = this._listeners = null;
}
};
function lifecycleMixin (Vue) {
/**
* Update v-ref for component.
*
* @param {Boolean} remove
*/
Vue.prototype._updateRef = function (remove) {
var ref = this.$options._ref;
if (ref) {
var refs = (this._scope || this._context).$refs;
if (remove) {
if (refs[ref] === this) {
refs[ref] = null;
}
} else {
refs[ref] = this;
}
}
};
/**
* Transclude, compile and link element.
*
* If a pre-compiled linker is available, that means the
* passed in element will be pre-transcluded and compiled
* as well - all we need to do is to call the linker.
*
* Otherwise we need to call transclude/compile/link here.
*
* @param {Element} el
* @return {Element}
*/
Vue.prototype._compile = function (el) {
var options = this.$options;
// transclude and init element
// transclude can potentially replace original
// so we need to keep reference; this step also injects
// the template and caches the original attributes
// on the container node and replacer node.
var original = el;
el = transclude(el, options);
this._initElement(el);
// handle v-pre on root node (#2026)
if (el.nodeType === 1 && getAttr(el, 'v-pre') !== null) {
return;
}
// root is always compiled per-instance, because
// container attrs and props can be different every time.
var contextOptions = this._context && this._context.$options;
var rootLinker = compileRoot(el, options, contextOptions);
// compile and link the rest
var contentLinkFn;
var ctor = this.constructor;
// component compilation can be cached
// as long as it's not using inline-template
if (options._linkerCachable) {
contentLinkFn = ctor.linker;
if (!contentLinkFn) {
contentLinkFn = ctor.linker = compile(el, options);
}
}
// link phase
// make sure to link root with prop scope!
var rootUnlinkFn = rootLinker(this, el, this._scope);
var contentUnlinkFn = contentLinkFn ? contentLinkFn(this, el) : compile(el, options)(this, el);
// register composite unlink function
// to be called during instance destruction
this._unlinkFn = function () {
rootUnlinkFn();
// passing destroying: true to avoid searching and
// splicing the directives
contentUnlinkFn(true);
};
// finally replace original
if (options.replace) {
replace(original, el);
}
this._isCompiled = true;
this._callHook('compiled');
return el;
};
/**
* Initialize instance element. Called in the public
* $mount() method.
*
* @param {Element} el
*/
Vue.prototype._initElement = function (el) {
if (el instanceof DocumentFragment) {
this._isFragment = true;
this.$el = this._fragmentStart = el.firstChild;
this._fragmentEnd = el.lastChild;
// set persisted text anchors to empty
if (this._fragmentStart.nodeType === 3) {
this._fragmentStart.data = this._fragmentEnd.data = '';
}
this._fragment = el;
} else {
this.$el = el;
}
this.$el.__vue__ = this;
this._callHook('beforeCompile');
};
/**
* Create and bind a directive to an element.
*
* @param {String} name - directive name
* @param {Node} node - target node
* @param {Object} desc - parsed directive descriptor
* @param {Object} def - directive definition object
* @param {Vue} [host] - transclusion host component
* @param {Object} [scope] - v-for scope
* @param {Fragment} [frag] - owner fragment
*/
Vue.prototype._bindDir = function (descriptor, node, host, scope, frag) {
this._directives.push(new Directive(descriptor, this, node, host, scope, frag));
};
/**
* Teardown an instance, unobserves the data, unbind all the
* directives, turn off all the event listeners, etc.
*
* @param {Boolean} remove - whether to remove the DOM node.
* @param {Boolean} deferCleanup - if true, defer cleanup to
* be called later
*/
Vue.prototype._destroy = function (remove, deferCleanup) {
if (this._isBeingDestroyed) {
if (!deferCleanup) {
this._cleanup();
}
return;
}
var destroyReady;
var pendingRemoval;
var self = this;
// Cleanup should be called either synchronously or asynchronoysly as
// callback of this.$remove(), or if remove and deferCleanup are false.
// In any case it should be called after all other removing, unbinding and
// turning of is done
var cleanupIfPossible = function cleanupIfPossible() {
if (destroyReady && !pendingRemoval && !deferCleanup) {
self._cleanup();
}
};
// remove DOM element
if (remove && this.$el) {
pendingRemoval = true;
this.$remove(function () {
pendingRemoval = false;
cleanupIfPossible();
});
}
this._callHook('beforeDestroy');
this._isBeingDestroyed = true;
var i;
// remove self from parent. only necessary
// if parent is not being destroyed as well.
var parent = this.$parent;
if (parent && !parent._isBeingDestroyed) {
parent.$children.$remove(this);
// unregister ref (remove: true)
this._updateRef(true);
}
// destroy all children.
i = this.$children.length;
while (i--) {
this.$children[i].$destroy();
}
// teardown props
if (this._propsUnlinkFn) {
this._propsUnlinkFn();
}
// teardown all directives. this also tearsdown all
// directive-owned watchers.
if (this._unlinkFn) {
this._unlinkFn();
}
i = this._watchers.length;
while (i--) {
this._watchers[i].teardown();
}
// remove reference to self on $el
if (this.$el) {
this.$el.__vue__ = null;
}
destroyReady = true;
cleanupIfPossible();
};
/**
* Clean up to ensure garbage collection.
* This is called after the leave transition if there
* is any.
*/
Vue.prototype._cleanup = function () {
if (this._isDestroyed) {
return;
}
// remove self from owner fragment
// do it in cleanup so that we can call $destroy with
// defer right when a fragment is about to be removed.
if (this._frag) {
this._frag.children.$remove(this);
}
// remove reference from data ob
// frozen object may not have observer.
if (this._data.__ob__) {
this._data.__ob__.removeVm(this);
}
// Clean up references to private properties and other
// instances. preserve reference to _data so that proxy
// accessors still work. The only potential side effect
// here is that mutating the instance after it's destroyed
// may affect the state of other components that are still
// observing the same object, but that seems to be a
// reasonable responsibility for the user rather than
// always throwing an error on them.
this.$el = this.$parent = this.$root = this.$children = this._watchers = this._context = this._scope = this._directives = null;
// call the last hook...
this._isDestroyed = true;
this._callHook('destroyed');
// turn off all instance listeners.
this.$off();
};
}
function miscMixin (Vue) {
/**
* Apply a list of filter (descriptors) to a value.
* Using plain for loops here because this will be called in
* the getter of any watcher with filters so it is very
* performance sensitive.
*
* @param {*} value
* @param {*} [oldValue]
* @param {Array} filters
* @param {Boolean} write
* @return {*}
*/
Vue.prototype._applyFilters = function (value, oldValue, filters, write) {
var filter, fn, args, arg, offset, i, l, j, k;
for (i = 0, l = filters.length; i < l; i++) {
filter = filters[i];
fn = resolveAsset(this.$options, 'filters', filter.name);
if (process.env.NODE_ENV !== 'production') {
assertAsset(fn, 'filter', filter.name);
}
if (!fn) continue;
fn = write ? fn.write : fn.read || fn;
if (typeof fn !== 'function') continue;
args = write ? [value, oldValue] : [value];
offset = write ? 2 : 1;
if (filter.args) {
for (j = 0, k = filter.args.length; j < k; j++) {
arg = filter.args[j];
args[j + offset] = arg.dynamic ? this.$get(arg.value) : arg.value;
}
}
value = fn.apply(this, args);
}
return value;
};
/**
* Resolve a component, depending on whether the component
* is defined normally or using an async factory function.
* Resolves synchronously if already resolved, otherwise
* resolves asynchronously and caches the resolved
* constructor on the factory.
*
* @param {String} id
* @param {Function} cb
*/
Vue.prototype._resolveComponent = function (id, cb) {
var factory = resolveAsset(this.$options, 'components', id);
if (process.env.NODE_ENV !== 'production') {
assertAsset(factory, 'component', id);
}
if (!factory) {
return;
}
// async component factory
if (!factory.options) {
if (factory.resolved) {
// cached
cb(factory.resolved);
} else if (factory.requested) {
// pool callbacks
factory.pendingCallbacks.push(cb);
} else {
factory.requested = true;
var cbs = factory.pendingCallbacks = [cb];
factory(function resolve(res) {
if (isPlainObject(res)) {
res = Vue.extend(res);
}
// cache resolved
factory.resolved = res;
// invoke callbacks
for (var i = 0, l = cbs.length; i < l; i++) {
cbs[i](res);
}
}, function reject(reason) {
process.env.NODE_ENV !== 'production' && warn('Failed to resolve async component: ' + id + '. ' + (reason ? '\nReason: ' + reason : ''));
});
}
} else {
// normal component
cb(factory);
}
};
}
function globalAPI (Vue) {
/**
* Expose useful internals
*/
Vue.util = util;
Vue.config = config;
Vue.set = set;
Vue['delete'] = del;
Vue.nextTick = nextTick;
/**
* The following are exposed for advanced usage / plugins
*/
Vue.compiler = compiler;
Vue.FragmentFactory = FragmentFactory;
Vue.internalDirectives = internalDirectives;
Vue.parsers = {
path: path,
text: text$1,
template: template,
directive: directive,
expression: expression
};
/**
* Each instance constructor, including Vue, has a unique
* cid. This enables us to create wrapped "child
* constructors" for prototypal inheritance and cache them.
*/
Vue.cid = 0;
var cid = 1;
/**
* Class inheritance
*
* @param {Object} extendOptions
*/
Vue.extend = function (extendOptions) {
extendOptions = extendOptions || {};
var Super = this;
var isFirstExtend = Super.cid === 0;
if (isFirstExtend && extendOptions._Ctor) {
return extendOptions._Ctor;
}
var name = extendOptions.name || Super.options.name;
if (process.env.NODE_ENV !== 'production') {
if (!/^[a-zA-Z][\w-]+$/.test(name)) {
warn('Invalid component name: ' + name);
name = null;
}
}
var Sub = createClass(name || 'VueComponent');
Sub.prototype = Object.create(Super.prototype);
Sub.prototype.constructor = Sub;
Sub.cid = cid++;
Sub.options = mergeOptions(Super.options, extendOptions);
Sub['super'] = Super;
// allow further extension
Sub.extend = Super.extend;
// create asset registers, so extended classes
// can have their private assets too.
config._assetTypes.forEach(function (type) {
Sub[type] = Super[type];
});
// enable recursive self-lookup
if (name) {
Sub.options.components[name] = Sub;
}
// cache constructor
if (isFirstExtend) {
extendOptions._Ctor = Sub;
}
return Sub;
};
/**
* A function that returns a sub-class constructor with the
* given name. This gives us much nicer output when
* logging instances in the console.
*
* @param {String} name
* @return {Function}
*/
function createClass(name) {
return new Function('return function ' + classify(name) + ' (options) { this._init(options) }')();
}
/**
* Plugin system
*
* @param {Object} plugin
*/
Vue.use = function (plugin) {
/* istanbul ignore if */
if (plugin.installed) {
return;
}
// additional parameters
var args = toArray(arguments, 1);
args.unshift(this);
if (typeof plugin.install === 'function') {
plugin.install.apply(plugin, args);
} else {
plugin.apply(null, args);
}
plugin.installed = true;
return this;
};
/**
* Apply a global mixin by merging it into the default
* options.
*/
Vue.mixin = function (mixin) {
Vue.options = mergeOptions(Vue.options, mixin);
};
/**
* Create asset registration methods with the following
* signature:
*
* @param {String} id
* @param {*} definition
*/
config._assetTypes.forEach(function (type) {
Vue[type] = function (id, definition) {
if (!definition) {
return this.options[type + 's'][id];
} else {
/* istanbul ignore if */
if (process.env.NODE_ENV !== 'production') {
if (type === 'component' && (commonTagRE.test(id) || reservedTagRE.test(id))) {
warn('Do not use built-in or reserved HTML elements as component ' + 'id: ' + id);
}
}
if (type === 'component' && isPlainObject(definition)) {
definition.name = id;
definition = Vue.extend(definition);
}
this.options[type + 's'][id] = definition;
return definition;
}
};
});
}
var filterRE = /[^|]\|[^|]/;
function dataAPI (Vue) {
/**
* Get the value from an expression on this vm.
*
* @param {String} exp
* @param {Boolean} [asStatement]
* @return {*}
*/
Vue.prototype.$get = function (exp, asStatement) {
var res = parseExpression(exp);
if (res) {
if (asStatement && !isSimplePath(exp)) {
var self = this;
return function statementHandler() {
self.$arguments = toArray(arguments);
var result = res.get.call(self, self);
self.$arguments = null;
return result;
};
} else {
try {
return res.get.call(this, this);
} catch (e) {}
}
}
};
/**
* Set the value from an expression on this vm.
* The expression must be a valid left-hand
* expression in an assignment.
*
* @param {String} exp
* @param {*} val
*/
Vue.prototype.$set = function (exp, val) {
var res = parseExpression(exp, true);
if (res && res.set) {
res.set.call(this, this, val);
}
};
/**
* Delete a property on the VM
*
* @param {String} key
*/
Vue.prototype.$delete = function (key) {
del(this._data, key);
};
/**
* Watch an expression, trigger callback when its
* value changes.
*
* @param {String|Function} expOrFn
* @param {Function} cb
* @param {Object} [options]
* - {Boolean} deep
* - {Boolean} immediate
* @return {Function} - unwatchFn
*/
Vue.prototype.$watch = function (expOrFn, cb, options) {
var vm = this;
var parsed;
if (typeof expOrFn === 'string') {
parsed = parseDirective(expOrFn);
expOrFn = parsed.expression;
}
var watcher = new Watcher(vm, expOrFn, cb, {
deep: options && options.deep,
sync: options && options.sync,
filters: parsed && parsed.filters,
user: !options || options.user !== false
});
if (options && options.immediate) {
cb.call(vm, watcher.value);
}
return function unwatchFn() {
watcher.teardown();
};
};
/**
* Evaluate a text directive, including filters.
*
* @param {String} text
* @param {Boolean} [asStatement]
* @return {String}
*/
Vue.prototype.$eval = function (text, asStatement) {
// check for filters.
if (filterRE.test(text)) {
var dir = parseDirective(text);
// the filter regex check might give false positive
// for pipes inside strings, so it's possible that
// we don't get any filters here
var val = this.$get(dir.expression, asStatement);
return dir.filters ? this._applyFilters(val, null, dir.filters) : val;
} else {
// no filter
return this.$get(text, asStatement);
}
};
/**
* Interpolate a piece of template text.
*
* @param {String} text
* @return {String}
*/
Vue.prototype.$interpolate = function (text) {
var tokens = parseText(text);
var vm = this;
if (tokens) {
if (tokens.length === 1) {
return vm.$eval(tokens[0].value) + '';
} else {
return tokens.map(function (token) {
return token.tag ? vm.$eval(token.value) : token.value;
}).join('');
}
} else {
return text;
}
};
/**
* Log instance data as a plain JS object
* so that it is easier to inspect in console.
* This method assumes console is available.
*
* @param {String} [path]
*/
Vue.prototype.$log = function (path) {
var data = path ? getPath(this._data, path) : this._data;
if (data) {
data = clean(data);
}
// include computed fields
if (!path) {
for (var key in this.$options.computed) {
data[key] = clean(this[key]);
}
}
console.log(data);
};
/**
* "clean" a getter/setter converted object into a plain
* object copy.
*
* @param {Object} - obj
* @return {Object}
*/
function clean(obj) {
return JSON.parse(JSON.stringify(obj));
}
}
function domAPI (Vue) {
/**
* Convenience on-instance nextTick. The callback is
* auto-bound to the instance, and this avoids component
* modules having to rely on the global Vue.
*
* @param {Function} fn
*/
Vue.prototype.$nextTick = function (fn) {
nextTick(fn, this);
};
/**
* Append instance to target
*
* @param {Node} target
* @param {Function} [cb]
* @param {Boolean} [withTransition] - defaults to true
*/
Vue.prototype.$appendTo = function (target, cb, withTransition) {
return insert(this, target, cb, withTransition, append, appendWithTransition);
};
/**
* Prepend instance to target
*
* @param {Node} target
* @param {Function} [cb]
* @param {Boolean} [withTransition] - defaults to true
*/
Vue.prototype.$prependTo = function (target, cb, withTransition) {
target = query(target);
if (target.hasChildNodes()) {
this.$before(target.firstChild, cb, withTransition);
} else {
this.$appendTo(target, cb, withTransition);
}
return this;
};
/**
* Insert instance before target
*
* @param {Node} target
* @param {Function} [cb]
* @param {Boolean} [withTransition] - defaults to true
*/
Vue.prototype.$before = function (target, cb, withTransition) {
return insert(this, target, cb, withTransition, beforeWithCb, beforeWithTransition);
};
/**
* Insert instance after target
*
* @param {Node} target
* @param {Function} [cb]
* @param {Boolean} [withTransition] - defaults to true
*/
Vue.prototype.$after = function (target, cb, withTransition) {
target = query(target);
if (target.nextSibling) {
this.$before(target.nextSibling, cb, withTransition);
} else {
this.$appendTo(target.parentNode, cb, withTransition);
}
return this;
};
/**
* Remove instance from DOM
*
* @param {Function} [cb]
* @param {Boolean} [withTransition] - defaults to true
*/
Vue.prototype.$remove = function (cb, withTransition) {
if (!this.$el.parentNode) {
return cb && cb();
}
var inDocument = this._isAttached && inDoc(this.$el);
// if we are not in document, no need to check
// for transitions
if (!inDocument) withTransition = false;
var self = this;
var realCb = function realCb() {
if (inDocument) self._callHook('detached');
if (cb) cb();
};
if (this._isFragment) {
removeNodeRange(this._fragmentStart, this._fragmentEnd, this, this._fragment, realCb);
} else {
var op = withTransition === false ? removeWithCb : removeWithTransition;
op(this.$el, this, realCb);
}
return this;
};
/**
* Shared DOM insertion function.
*
* @param {Vue} vm
* @param {Element} target
* @param {Function} [cb]
* @param {Boolean} [withTransition]
* @param {Function} op1 - op for non-transition insert
* @param {Function} op2 - op for transition insert
* @return vm
*/
function insert(vm, target, cb, withTransition, op1, op2) {
target = query(target);
var targetIsDetached = !inDoc(target);
var op = withTransition === false || targetIsDetached ? op1 : op2;
var shouldCallHook = !targetIsDetached && !vm._isAttached && !inDoc(vm.$el);
if (vm._isFragment) {
mapNodeRange(vm._fragmentStart, vm._fragmentEnd, function (node) {
op(node, target, vm);
});
cb && cb();
} else {
op(vm.$el, target, vm, cb);
}
if (shouldCallHook) {
vm._callHook('attached');
}
return vm;
}
/**
* Check for selectors
*
* @param {String|Element} el
*/
function query(el) {
return typeof el === 'string' ? document.querySelector(el) : el;
}
/**
* Append operation that takes a callback.
*
* @param {Node} el
* @param {Node} target
* @param {Vue} vm - unused
* @param {Function} [cb]
*/
function append(el, target, vm, cb) {
target.appendChild(el);
if (cb) cb();
}
/**
* InsertBefore operation that takes a callback.
*
* @param {Node} el
* @param {Node} target
* @param {Vue} vm - unused
* @param {Function} [cb]
*/
function beforeWithCb(el, target, vm, cb) {
before(el, target);
if (cb) cb();
}
/**
* Remove operation that takes a callback.
*
* @param {Node} el
* @param {Vue} vm - unused
* @param {Function} [cb]
*/
function removeWithCb(el, vm, cb) {
remove(el);
if (cb) cb();
}
}
function eventsAPI (Vue) {
/**
* Listen on the given `event` with `fn`.
*
* @param {String} event
* @param {Function} fn
*/
Vue.prototype.$on = function (event, fn) {
(this._events[event] || (this._events[event] = [])).push(fn);
modifyListenerCount(this, event, 1);
return this;
};
/**
* Adds an `event` listener that will be invoked a single
* time then automatically removed.
*
* @param {String} event
* @param {Function} fn
*/
Vue.prototype.$once = function (event, fn) {
var self = this;
function on() {
self.$off(event, on);
fn.apply(this, arguments);
}
on.fn = fn;
this.$on(event, on);
return this;
};
/**
* Remove the given callback for `event` or all
* registered callbacks.
*
* @param {String} event
* @param {Function} fn
*/
Vue.prototype.$off = function (event, fn) {
var cbs;
// all
if (!arguments.length) {
if (this.$parent) {
for (event in this._events) {
cbs = this._events[event];
if (cbs) {
modifyListenerCount(this, event, -cbs.length);
}
}
}
this._events = {};
return this;
}
// specific event
cbs = this._events[event];
if (!cbs) {
return this;
}
if (arguments.length === 1) {
modifyListenerCount(this, event, -cbs.length);
this._events[event] = null;
return this;
}
// specific handler
var cb;
var i = cbs.length;
while (i--) {
cb = cbs[i];
if (cb === fn || cb.fn === fn) {
modifyListenerCount(this, event, -1);
cbs.splice(i, 1);
break;
}
}
return this;
};
/**
* Trigger an event on self.
*
* @param {String|Object} event
* @return {Boolean} shouldPropagate
*/
Vue.prototype.$emit = function (event) {
var isSource = typeof event === 'string';
event = isSource ? event : event.name;
var cbs = this._events[event];
var shouldPropagate = isSource || !cbs;
if (cbs) {
cbs = cbs.length > 1 ? toArray(cbs) : cbs;
// this is a somewhat hacky solution to the question raised
// in #2102: for an inline component listener like <comp @test="doThis">,
// the propagation handling is somewhat broken. Therefore we
// need to treat these inline callbacks differently.
var hasParentCbs = isSource && cbs.some(function (cb) {
return cb._fromParent;
});
if (hasParentCbs) {
shouldPropagate = false;
}
var args = toArray(arguments, 1);
for (var i = 0, l = cbs.length; i < l; i++) {
var cb = cbs[i];
var res = cb.apply(this, args);
if (res === true && (!hasParentCbs || cb._fromParent)) {
shouldPropagate = true;
}
}
}
return shouldPropagate;
};
/**
* Recursively broadcast an event to all children instances.
*
* @param {String|Object} event
* @param {...*} additional arguments
*/
Vue.prototype.$broadcast = function (event) {
var isSource = typeof event === 'string';
event = isSource ? event : event.name;
// if no child has registered for this event,
// then there's no need to broadcast.
if (!this._eventsCount[event]) return;
var children = this.$children;
var args = toArray(arguments);
if (isSource) {
// use object event to indicate non-source emit
// on children
args[0] = { name: event, source: this };
}
for (var i = 0, l = children.length; i < l; i++) {
var child = children[i];
var shouldPropagate = child.$emit.apply(child, args);
if (shouldPropagate) {
child.$broadcast.apply(child, args);
}
}
return this;
};
/**
* Recursively propagate an event up the parent chain.
*
* @param {String} event
* @param {...*} additional arguments
*/
Vue.prototype.$dispatch = function (event) {
var shouldPropagate = this.$emit.apply(this, arguments);
if (!shouldPropagate) return;
var parent = this.$parent;
var args = toArray(arguments);
// use object event to indicate non-source emit
// on parents
args[0] = { name: event, source: this };
while (parent) {
shouldPropagate = parent.$emit.apply(parent, args);
parent = shouldPropagate ? parent.$parent : null;
}
return this;
};
/**
* Modify the listener counts on all parents.
* This bookkeeping allows $broadcast to return early when
* no child has listened to a certain event.
*
* @param {Vue} vm
* @param {String} event
* @param {Number} count
*/
var hookRE = /^hook:/;
function modifyListenerCount(vm, event, count) {
var parent = vm.$parent;
// hooks do not get broadcasted so no need
// to do bookkeeping for them
if (!parent || !count || hookRE.test(event)) return;
while (parent) {
parent._eventsCount[event] = (parent._eventsCount[event] || 0) + count;
parent = parent.$parent;
}
}
}
function lifecycleAPI (Vue) {
/**
* Set instance target element and kick off the compilation
* process. The passed in `el` can be a selector string, an
* existing Element, or a DocumentFragment (for block
* instances).
*
* @param {Element|DocumentFragment|string} el
* @public
*/
Vue.prototype.$mount = function (el) {
if (this._isCompiled) {
process.env.NODE_ENV !== 'production' && warn('$mount() should be called only once.');
return;
}
el = query(el);
if (!el) {
el = document.createElement('div');
}
this._compile(el);
this._initDOMHooks();
if (inDoc(this.$el)) {
this._callHook('attached');
ready.call(this);
} else {
this.$once('hook:attached', ready);
}
return this;
};
/**
* Mark an instance as ready.
*/
function ready() {
this._isAttached = true;
this._isReady = true;
this._callHook('ready');
}
/**
* Teardown the instance, simply delegate to the internal
* _destroy.
*/
Vue.prototype.$destroy = function (remove, deferCleanup) {
this._destroy(remove, deferCleanup);
};
/**
* Partially compile a piece of DOM and return a
* decompile function.
*
* @param {Element|DocumentFragment} el
* @param {Vue} [host]
* @return {Function}
*/
Vue.prototype.$compile = function (el, host, scope, frag) {
return compile(el, this.$options, true)(this, el, host, scope, frag);
};
}
/**
* The exposed Vue constructor.
*
* API conventions:
* - public API methods/properties are prefixed with `$`
* - internal methods/properties are prefixed with `_`
* - non-prefixed properties are assumed to be proxied user
* data.
*
* @constructor
* @param {Object} [options]
* @public
*/
function Vue(options) {
this._init(options);
}
// install internals
initMixin(Vue);
stateMixin(Vue);
eventsMixin(Vue);
lifecycleMixin(Vue);
miscMixin(Vue);
// install APIs
globalAPI(Vue);
dataAPI(Vue);
domAPI(Vue);
eventsAPI(Vue);
lifecycleAPI(Vue);
var convertArray = vFor._postProcess;
/**
* Limit filter for arrays
*
* @param {Number} n
* @param {Number} offset (Decimal expected)
*/
function limitBy(arr, n, offset) {
offset = offset ? parseInt(offset, 10) : 0;
n = toNumber(n);
return typeof n === 'number' ? arr.slice(offset, offset + n) : arr;
}
/**
* Filter filter for arrays
*
* @param {String} search
* @param {String} [delimiter]
* @param {String} ...dataKeys
*/
function filterBy(arr, search, delimiter) {
arr = convertArray(arr);
if (search == null) {
return arr;
}
if (typeof search === 'function') {
return arr.filter(search);
}
// cast to lowercase string
search = ('' + search).toLowerCase();
// allow optional `in` delimiter
// because why not
var n = delimiter === 'in' ? 3 : 2;
// extract and flatten keys
var keys = toArray(arguments, n).reduce(function (prev, cur) {
return prev.concat(cur);
}, []);
var res = [];
var item, key, val, j;
for (var i = 0, l = arr.length; i < l; i++) {
item = arr[i];
val = item && item.$value || item;
j = keys.length;
if (j) {
while (j--) {
key = keys[j];
if (key === '$key' && contains(item.$key, search) || contains(getPath(val, key), search)) {
res.push(item);
break;
}
}
} else if (contains(item, search)) {
res.push(item);
}
}
return res;
}
/**
* Filter filter for arrays
*
* @param {String} sortKey
* @param {String} reverse
*/
function orderBy(arr, sortKey, reverse) {
arr = convertArray(arr);
if (!sortKey) {
return arr;
}
var order = reverse && reverse < 0 ? -1 : 1;
// sort on a copy to avoid mutating original array
return arr.slice().sort(function (a, b) {
if (sortKey !== '$key') {
if (isObject(a) && '$value' in a) a = a.$value;
if (isObject(b) && '$value' in b) b = b.$value;
}
a = isObject(a) ? getPath(a, sortKey) : a;
b = isObject(b) ? getPath(b, sortKey) : b;
return a === b ? 0 : a > b ? order : -order;
});
}
/**
* String contain helper
*
* @param {*} val
* @param {String} search
*/
function contains(val, search) {
var i;
if (isPlainObject(val)) {
var keys = Object.keys(val);
i = keys.length;
while (i--) {
if (contains(val[keys[i]], search)) {
return true;
}
}
} else if (isArray(val)) {
i = val.length;
while (i--) {
if (contains(val[i], search)) {
return true;
}
}
} else if (val != null) {
return val.toString().toLowerCase().indexOf(search) > -1;
}
}
var digitsRE = /(\d{3})(?=\d)/g;
// asset collections must be a plain object.
var filters = {
orderBy: orderBy,
filterBy: filterBy,
limitBy: limitBy,
/**
* Stringify value.
*
* @param {Number} indent
*/
json: {
read: function read(value, indent) {
return typeof value === 'string' ? value : JSON.stringify(value, null, Number(indent) || 2);
},
write: function write(value) {
try {
return JSON.parse(value);
} catch (e) {
return value;
}
}
},
/**
* 'abc' => 'Abc'
*/
capitalize: function capitalize(value) {
if (!value && value !== 0) return '';
value = value.toString();
return value.charAt(0).toUpperCase() + value.slice(1);
},
/**
* 'abc' => 'ABC'
*/
uppercase: function uppercase(value) {
return value || value === 0 ? value.toString().toUpperCase() : '';
},
/**
* 'AbC' => 'abc'
*/
lowercase: function lowercase(value) {
return value || value === 0 ? value.toString().toLowerCase() : '';
},
/**
* 12345 => $12,345.00
*
* @param {String} sign
*/
currency: function currency(value, _currency) {
value = parseFloat(value);
if (!isFinite(value) || !value && value !== 0) return '';
_currency = _currency != null ? _currency : '$';
var stringified = Math.abs(value).toFixed(2);
var _int = stringified.slice(0, -3);
var i = _int.length % 3;
var head = i > 0 ? _int.slice(0, i) + (_int.length > 3 ? ',' : '') : '';
var _float = stringified.slice(-3);
var sign = value < 0 ? '-' : '';
return _currency + sign + head + _int.slice(i).replace(digitsRE, '$1,') + _float;
},
/**
* 'item' => 'items'
*
* @params
* an array of strings corresponding to
* the single, double, triple ... forms of the word to
* be pluralized. When the number to be pluralized
* exceeds the length of the args, it will use the last
* entry in the array.
*
* e.g. ['single', 'double', 'triple', 'multiple']
*/
pluralize: function pluralize(value) {
var args = toArray(arguments, 1);
return args.length > 1 ? args[value % 10 - 1] || args[args.length - 1] : args[0] + (value === 1 ? '' : 's');
},
/**
* Debounce a handler function.
*
* @param {Function} handler
* @param {Number} delay = 300
* @return {Function}
*/
debounce: function debounce(handler, delay) {
if (!handler) return;
if (!delay) {
delay = 300;
}
return _debounce(handler, delay);
}
};
var partial = {
priority: PARTIAL,
params: ['name'],
// watch changes to name for dynamic partials
paramWatchers: {
name: function name(value) {
vIf.remove.call(this);
if (value) {
this.insert(value);
}
}
},
bind: function bind() {
this.anchor = createAnchor('v-partial');
replace(this.el, this.anchor);
this.insert(this.params.name);
},
insert: function insert(id) {
var partial = resolveAsset(this.vm.$options, 'partials', id);
if (process.env.NODE_ENV !== 'production') {
assertAsset(partial, 'partial', id);
}
if (partial) {
this.factory = new FragmentFactory(this.vm, partial);
vIf.insert.call(this);
}
},
unbind: function unbind() {
if (this.frag) {
this.frag.destroy();
}
}
};
// This is the elementDirective that handles <content>
// transclusions. It relies on the raw content of an
// instance being stored as `$options._content` during
// the transclude phase.
// We are exporting two versions, one for named and one
// for unnamed, because the unnamed slots must be compiled
// AFTER all named slots have selected their content. So
// we need to give them different priorities in the compilation
// process. (See #1965)
var slot = {
priority: SLOT,
bind: function bind() {
var host = this.vm;
var raw = host.$options._content;
if (!raw) {
this.fallback();
return;
}
var context = host._context;
var slotName = this.params && this.params.name;
if (!slotName) {
// Default slot
this.tryCompile(extractFragment(raw.childNodes, raw, true), context, host);
} else {
// Named slot
var selector = '[slot="' + slotName + '"]';
var nodes = raw.querySelectorAll(selector);
if (nodes.length) {
this.tryCompile(extractFragment(nodes, raw), context, host);
} else {
this.fallback();
}
}
},
tryCompile: function tryCompile(content, context, host) {
if (content.hasChildNodes()) {
this.compile(content, context, host);
} else {
this.fallback();
}
},
compile: function compile(content, context, host) {
if (content && context) {
var scope = host ? host._scope : this._scope;
this.unlink = context.$compile(content, host, scope, this._frag);
}
if (content) {
replace(this.el, content);
} else {
remove(this.el);
}
},
fallback: function fallback() {
this.compile(extractContent(this.el, true), this.vm);
},
unbind: function unbind() {
if (this.unlink) {
this.unlink();
}
}
};
var namedSlot = extend(extend({}, slot), {
priority: slot.priority + 1,
params: ['name']
});
/**
* Extract qualified content nodes from a node list.
*
* @param {NodeList} nodes
* @param {Element} parent
* @param {Boolean} main
* @return {DocumentFragment}
*/
function extractFragment(nodes, parent, main) {
var frag = document.createDocumentFragment();
for (var i = 0, l = nodes.length; i < l; i++) {
var node = nodes[i];
// if this is the main outlet, we want to skip all
// previously selected nodes;
// otherwise, we want to mark the node as selected.
// clone the node so the original raw content remains
// intact. this ensures proper re-compilation in cases
// where the outlet is inside a conditional block
if (main && !node.__v_selected) {
append(node);
} else if (!main && node.parentNode === parent) {
node.__v_selected = true;
append(node);
}
}
return frag;
function append(node) {
if (isTemplate(node) && !node.hasAttribute('v-if') && !node.hasAttribute('v-for')) {
node = parseTemplate(node);
}
node = cloneNode(node);
frag.appendChild(node);
}
}
var elementDirectives = {
slot: slot,
_namedSlot: namedSlot, // same as slot but with higher priority
partial: partial
};
Vue.version = '1.0.15';
/**
* Vue and every constructor that extends Vue has an
* associated options object, which can be accessed during
* compilation steps as `this.constructor.options`.
*
* These can be seen as the default options of every
* Vue instance.
*/
Vue.options = {
directives: publicDirectives,
elementDirectives: elementDirectives,
filters: filters,
transitions: {},
components: {},
partials: {},
replace: true
};
// devtools global hook
/* istanbul ignore if */
if (process.env.NODE_ENV !== 'production' && inBrowser) {
if (window.__VUE_DEVTOOLS_GLOBAL_HOOK__) {
window.__VUE_DEVTOOLS_GLOBAL_HOOK__.emit('init', Vue);
} else if (/Chrome\/\d+/.test(navigator.userAgent)) {
console.log('Download the Vue Devtools for a better development experience:\n' + 'https://github.com/vuejs/vue-devtools');
}
}
module.exports = Vue;