chrome/browser/ui/webui/extensions/command_handler.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_UI_WEBUI_EXTENSIONS_COMMAND_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_EXTENSIONS_COMMAND_HANDLER_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/scoped_observer.h"
  10 #include "content/public/browser/web_ui_message_handler.h"
  11 #include "extensions/browser/extension_registry_observer.h"
  12
  13 class Profile;
  14
  15 namespace base {
  16 class DictionaryValue;
  17 class ListValue;
  18 }
  19
  20 namespace content {
  21 class WebUIDataSource;
  22 }
  23
  24 namespace extensions {
  25 class Command;
  26 class CommandService;
  27 class Extension;
  28 class ExtensionRegistry;
  29
  30 // The handler page for the Extension Commands UI overlay.
  31 class CommandHandler : public content::WebUIMessageHandler,
  32                        public ExtensionRegistryObserver {
  33  public:
  34   explicit CommandHandler(Profile* profile);
  35   virtual ~CommandHandler();
  36
  37   // Fetches the localized values for the page and deposits them into |source|.
  38   void GetLocalizedValues(content::WebUIDataSource* source);
  39
  40   // WebUIMessageHandler implementation.
  41   virtual void RegisterMessages() override;
  42
  43  private:
  44   // ExtensionRegistryObserver implementation.
  45   virtual void OnExtensionLoaded(content::BrowserContext* browser_context,
  46                                  const Extension* extension) override;
  47   virtual void OnExtensionUnloaded(
  48       content::BrowserContext* browser_context,
  49       const Extension* extension,
  50       UnloadedExtensionInfo::Reason reason) override;
  51
  52    // Update the list of extension commands in the config UI.
  53   void UpdateCommandDataOnPage();
  54
  55   // Handles requests from javascript to fetch the extensions data, including
  56   // the commands it contains.
  57   // Replies back through: ExtensionCommandsOverlay.returnExtensionsData.
  58   void HandleRequestExtensionsData(const base::ListValue* args);
  59
  60   // Handles requests from javascript to set a particular keyboard shortcut
  61   // for a given extension command.
  62   void HandleSetExtensionCommandShortcut(const base::ListValue* args);
  63
  64   // Handles requests from javascript to change the scope of a particular
  65   // keyboard shortcut for a given extension command.
  66   void HandleSetCommandScope(const base::ListValue* args);
  67
  68   // Handles requests from javascript to temporarily disable general Chrome
  69   // shortcut handling while the web page is capturing which shortcut to use.
  70   void HandleSetShortcutHandlingSuspended(const base::ListValue* args);
  71
  72   // Fetches all known commands, active and inactive and returns them through
  73   // |commands|.
  74   void GetAllCommands(base::DictionaryValue* commands);
  75
  76   Profile* profile_;
  77
  78   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
  79       extension_registry_observer_;
  80
  81   DISALLOW_COPY_AND_ASSIGN(CommandHandler);
  82 };
  83
  84 }  // namespace extensions
  85
  86 #endif  // CHROME_BROWSER_UI_WEBUI_EXTENSIONS_COMMAND_HANDLER_H_