Implement first part of supporting global extension commands.

chrome/browser/ui/views/extensions/extension_commands_global_registry_views.h

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_COMMANDS_GLOBAL_REGISTRY_VIEWS_H_
+#define CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_COMMANDS_GLOBAL_REGISTRY_VIEWS_H_
+
+#include <map>
+#include <string>
+
+#include "base/compiler_specific.h"
+#include "chrome/browser/extensions/api/profile_keyed_api_factory.h"
+#include "chrome/browser/extensions/extension_keybinding_registry.h"
+#include "chrome/browser/extensions/global_shortcut_listener.h"
+#include "ui/base/accelerators/accelerator.h"
+
+class Profile;
+
+namespace extensions {
+class Extension;
+}
+
+namespace extensions {
+
+// ExtensionCommandsGlobalRegistryViews is a class that handles the

[zhchbin, 2013/09/26 14:45:00]

Does this need to be views-specific? I'm working on linux this afternoon and
find the code here can cross platform.

[Finnur, 2013/09/26 15:01:00]

I think you may be right. I'll try to move it to a platform indendant location.

+// Views-specific implementation of the global shortcut registration for the
+// Extension Commands API).
+// Note: It handles regular extension commands (not browserAction and pageAction
+// popups, which are not bindable to global shortcuts). This class registers the
+// accelerators on behalf of the extensions and routes the commands to them via
+// the BrowserEventRouter.
+class ExtensionCommandsGlobalRegistryViews
+    : public ProfileKeyedAPI,
+      public ExtensionKeybindingRegistry,
+      public GlobalShortcutListener::Observer {
+ public:
+  // ProfileKeyedAPI implementation.
+  static ProfileKeyedAPIFactory<
+      ExtensionCommandsGlobalRegistryViews>* GetFactoryInstance();
+
+  // Convenience method to get the ExtensionCommandsGlobalRegistryViews for a
+  // profile.
+  static ExtensionCommandsGlobalRegistryViews* Get(Profile* profile);
+
+  explicit ExtensionCommandsGlobalRegistryViews(Profile* profile);
+  virtual ~ExtensionCommandsGlobalRegistryViews();
+
+ private:
+  friend class ProfileKeyedAPIFactory<ExtensionCommandsGlobalRegistryViews>;
+
+  // ProfileKeyedAPI implementation.
+  static const char* service_name() {
+    return "ExtensionCommandsGlobalRegistryViews";
+  }
+
+  // Overridden from ExtensionKeybindingRegistry:
+  virtual void AddExtensionKeybinding(
+      const Extension* extension,
+      const std::string& command_name) OVERRIDE;
+  virtual void RemoveExtensionKeybinding(
+      const Extension* extension,
+      const std::string& command_name) OVERRIDE;
+
+  // Called by the GlobalShortcutListener object when a shortcut this class has
+  // registered for has been pressed.
+  virtual void OnKeyPressed(const ui::Accelerator& accelerator) OVERRIDE;
+
+  // Weak pointer to our profile. Not owned by us.
+  Profile* profile_;
+
+  // Maps an accelerator to a string pair (extension id, command name) for
+  // commands that have been registered.
+  typedef std::map< ui::Accelerator,
+                    std::pair<std::string, std::string> > EventTargets;
+  EventTargets event_targets_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExtensionCommandsGlobalRegistryViews);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_COMMANDS_GLOBAL_REGISTRY_VIEWS_H_