Merge 424ce6899a into 6d89a6bc15

src/app/commands/cmd_about.cpp

@@ -17,6 +17,7 @@
 #include "ver/info.h"
 
 #include "about.xml.h"
+#include "app/context.h"
 
 namespace app {
 
@@ -27,6 +28,7 @@ public:
   AboutCommand();
 
 protected:
+  bool onEnabled(Context* context) override;
   void onExecute(Context* context) override;
 };
 
@@ -34,6 +36,11 @@ AboutCommand::AboutCommand() : Command(CommandId::About())
 {
 }
 
+bool AboutCommand::onEnabled(Context* context)
+{
+  return context->isUIAvailable();
+}
+
 void AboutCommand::onExecute(Context* context)
 {
   gen::About window;

src/app/commands/cmd_advanced_mode.cpp

@@ -17,6 +17,7 @@
 #include "ui/ui.h"
 
 #include "advanced_mode.xml.h"
+#include "app/context.h"
 
 #include <cstdio>
 
@@ -29,6 +30,7 @@ public:
   AdvancedModeCommand();
 
 protected:
+  bool onEnabled(Context* context) override;
   void onExecute(Context* context) override;
 };
 
@@ -36,6 +38,11 @@ AdvancedModeCommand::AdvancedModeCommand() : Command(CommandId::AdvancedMode())
 {
 }
 
+bool AdvancedModeCommand::onEnabled(Context* context)
+{
+  return context->isUIAvailable();
+}
+
 void AdvancedModeCommand::onExecute(Context* context)
 {
   // Switch advanced mode.

src/app/commands/cmd_cel_properties.cpp

@@ -390,8 +390,8 @@ CelPropertiesCommand::CelPropertiesCommand() : Command(CommandId::CelProperties(
 
 bool CelPropertiesCommand::onEnabled(Context* context)
 {
-  return context->checkFlags(ContextFlags::ActiveDocumentIsWritable |
+  return context->isUIAvailable() && context->checkFlags(ContextFlags::ActiveDocumentIsWritable |
-                             ContextFlags::ActiveLayerIsImage);
+                                                         ContextFlags::ActiveLayerIsImage);
 }
 
 void CelPropertiesCommand::onExecute(Context* context)

src/app/commands/cmd_change_color.cpp

@@ -14,6 +14,7 @@
 #include "app/app.h"
 #include "app/commands/command.h"
 #include "app/commands/params.h"
+#include "app/context.h"
 #include "app/i18n/strings.h"
 #include "app/modules/palettes.h"
 #include "app/ui/color_bar.h"
@@ -39,6 +40,7 @@ public:
   ChangeColorCommand();
 
 protected:
+  bool onEnabled(Context* context) override;
   bool onNeedsParams() const override { return true; }
   void onLoadParams(const Params& params) override;
   void onExecute(Context* context) override;
@@ -51,6 +53,11 @@ ChangeColorCommand::ChangeColorCommand() : Command(CommandId::ChangeColor())
   m_change = None;
 }
 
+bool ChangeColorCommand::onEnabled(Context* context)
+{
+  return context->isUIAvailable();
+}
+
 void ChangeColorCommand::onLoadParams(const Params& params)
 {
   std::string target = params.get("target");

src/app/commands/cmd_frame_properties.cpp

@@ -62,13 +62,14 @@ void FramePropertiesCommand::onLoadParams(const Params& params)
     m_target = CURRENT_RANGE;
   }
 
-  const int frameNumber = frame_t(base::convert_to<int>(frame));
+  const auto frameNumber = base::convert_to<frame_t>(frame);
-  // Will open with the default target (CURRENT_RANGE) if the frame number cannot be parsed.
+  if (frameNumber < 1) {
-  if (frameNumber < 1)
+    // Will open with the default target (CURRENT_RANGE) if the frame number cannot be parsed.
-    return;
+    m_frame = CURRENT_RANGE;
+  }
 
-  m_frame = frameNumber;
   m_target = SPECIFIC_FRAME;
+  m_frame = frameNumber;
 }
 
 bool FramePropertiesCommand::onEnabled(Context* context)

src/app/context.cpp

@@ -198,6 +198,8 @@ void Context::executeCommand(Command* command, const Params& params)
     }
     else {
       LOG(VERBOSE, "CTXT: Command %s is disabled\n", command->id().c_str());
+      m_result = CommandResult(CommandResult::kDisabled);
+      return;
     }
 
     AfterCommandExecution(ev);

src/app/context.h

@@ -48,6 +48,8 @@ public:
     kError,
     // Canceled by user.
     kCanceled,
+    // Disabled.
+    kDisabled
   };
 
   CommandResult(Type type = Type::kOk) : m_type(type) {}

src/app/script/app_command_object.cpp

@@ -63,6 +63,17 @@ int Command_call(lua_State* L)
   return 1;
 }
 
+int Command_enabled(lua_State* L)
+{
+  app::Context* ctx = App::instance()->context();
+  if (!ctx)
+    return 0;
+
+  auto* command = get_ptr<Command>(L, 1);
+  lua_pushboolean(L, command->isEnabled(ctx));
+  return 1;
+}
+
 int AppCommand_index(lua_State* L)
 {
   const char* id = lua_tostring(L, 2);
@@ -82,6 +93,11 @@ const luaL_Reg Command_methods[] = {
   { nullptr,  nullptr      }
 };
 
+const Property Command_properties[] = {
+  { "enabled", Command_enabled, nullptr },
+  { nullptr,   nullptr,         nullptr }
+};
+
 const luaL_Reg AppCommand_methods[] = {
   { "__index", AppCommand_index },
   { nullptr,   nullptr          }
@@ -95,6 +111,8 @@ DEF_MTNAME(AppCommand);
 void register_app_command_object(lua_State* L)
 {
   REG_CLASS(L, Command);
+  REG_CLASS_PROPERTIES(L, Command);
+
   REG_CLASS(L, AppCommand);
 
   lua_getglobal(L, "app");