76 lines
1.9 KiB
Vue
76 lines
1.9 KiB
Vue
<script>
|
|
import { GlDropdown, GlDropdownItem } from '@gitlab/ui';
|
|
|
|
function getHeaderNumber(el) {
|
|
return parseInt(el.tagName.match(/\d+/)[0], 10);
|
|
}
|
|
|
|
export default {
|
|
components: {
|
|
GlDropdown,
|
|
GlDropdownItem,
|
|
},
|
|
data() {
|
|
return {
|
|
isHidden: false,
|
|
items: [],
|
|
};
|
|
},
|
|
mounted() {
|
|
this.blobViewer = document.querySelector('.blob-viewer[data-type="rich"]');
|
|
const blobViewerAttr = (attr) => this.blobViewer.getAttribute(attr);
|
|
|
|
this.observer = new MutationObserver(() => {
|
|
if (this.blobViewer.classList.contains('hidden') || blobViewerAttr('data-type') !== 'rich') {
|
|
this.isHidden = true;
|
|
} else if (blobViewerAttr('data-loaded') === 'true') {
|
|
this.isHidden = false;
|
|
this.generateHeaders();
|
|
}
|
|
});
|
|
|
|
if (this.blobViewer) {
|
|
this.observer.observe(this.blobViewer, {
|
|
attributes: true,
|
|
});
|
|
}
|
|
},
|
|
beforeDestroy() {
|
|
if (this.observer) {
|
|
this.observer.disconnect();
|
|
}
|
|
},
|
|
methods: {
|
|
generateHeaders() {
|
|
const headers = [...this.blobViewer.querySelectorAll('h1,h2,h3,h4,h5,h6')];
|
|
|
|
if (headers.length) {
|
|
const firstHeader = getHeaderNumber(headers[0]);
|
|
|
|
headers.forEach((el) => {
|
|
this.items.push({
|
|
text: el.textContent.trim(),
|
|
anchor: el.querySelector('a').getAttribute('id'),
|
|
spacing: Math.max((getHeaderNumber(el) - firstHeader) * 8, 0),
|
|
});
|
|
});
|
|
}
|
|
},
|
|
},
|
|
};
|
|
</script>
|
|
|
|
<template>
|
|
<gl-dropdown v-if="!isHidden && items.length" icon="list-bulleted" class="gl-mr-2" lazy>
|
|
<gl-dropdown-item v-for="(item, index) in items" :key="index" :href="`#${item.anchor}`">
|
|
<span
|
|
:style="{ 'padding-left': `${item.spacing}px` }"
|
|
class="gl-display-block"
|
|
data-testid="tableContentsLink"
|
|
>
|
|
{{ item.text }}
|
|
</span>
|
|
</gl-dropdown-item>
|
|
</gl-dropdown>
|
|
</template>
|