chrome/browser/ui/gtk/extensions/extension_keybinding_registry_gtk.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_GTK_EXTENSIONS_EXTENSION_KEYBINDING_REGISTRY_GTK_H_
   6 #define CHROME_BROWSER_UI_GTK_EXTENSIONS_EXTENSION_KEYBINDING_REGISTRY_GTK_H_
   7
   8 #include <gdk/gdk.h>
   9 #include <string>
  10
  11 #include "base/compiler_specific.h"
  12 #include "chrome/browser/extensions/extension_keybinding_registry.h"
  13 #include "ui/base/accelerators/accelerator.h"
  14 #include "ui/base/gtk/gtk_signal.h"
  15 #include "ui/gfx/native_widget_types.h"
  16
  17 class Profile;
  18
  19 namespace extensions {
  20 class Extension;
  21 }
  22
  23 typedef struct _GtkAccelGroup GtkAccelGroup;
  24 typedef struct _GdkEventKey GdkEventKey;
  25
  26 // The ExtensionKeybindingRegistryGtk is the GTK specialization of the
  27 // ExtensionKeybindingRegistry class that handles turning keyboard shortcuts
  28 // into events that get sent to the extension.
  29
  30 // ExtensionKeybindingRegistryGtk is a class that handles GTK-specific
  31 // implemenation of the Extension Keybinding shortcuts (keyboard accelerators).
  32 // Note: It keeps track of browserAction and pageAction commands, but does not
  33 // route the events to them -- that is handled elsewhere. This class registers
  34 // the accelerators on behalf of the extensions and routes the commands to them
  35 // via the BrowserEventRouter.
  36 class ExtensionKeybindingRegistryGtk
  37     : public extensions::ExtensionKeybindingRegistry {
  38  public:
  39   ExtensionKeybindingRegistryGtk(Profile* profile,
  40                                  gfx::NativeWindow window,
  41                                  ExtensionFilter extension_filter,
  42                                  Delegate* delegate);
  43   virtual ~ExtensionKeybindingRegistryGtk();
  44
  45   static void set_shortcut_handling_suspended(bool suspended) {
  46     shortcut_handling_suspended_ = suspended;
  47   }
  48   static bool shortcut_handling_suspended() {
  49     return shortcut_handling_suspended_;
  50   }
  51
  52   // Whether this class has any registered keyboard shortcuts that correspond
  53   // to |event|.
  54   gboolean HasPriorityHandler(const GdkEventKey* event) const;
  55
  56  protected:
  57   // Overridden from ExtensionKeybindingRegistry:
  58   virtual void AddExtensionKeybinding(
  59       const extensions::Extension* extension,
  60       const std::string& command_name) OVERRIDE;
  61   virtual void RemoveExtensionKeybindingImpl(
  62       const ui::Accelerator& accelerator,
  63       const std::string& command_name) OVERRIDE;
  64
  65  private:
  66   // The accelerator handler for when the extension command shortcuts are
  67   // struck.
  68   CHROMEG_CALLBACK_3(ExtensionKeybindingRegistryGtk, gboolean, OnGtkAccelerator,
  69                      GtkAccelGroup*, GObject*, guint, GdkModifierType);
  70
  71   // Keeps track of whether shortcut handling is currently suspended. Shortcuts
  72   // are suspended briefly while capturing which shortcut to assign to an
  73   // extension command in the Config UI. If handling isn't suspended while
  74   // capturing then trying to assign Ctrl+F to a command would instead result
  75   // in the Find box opening.
  76   static bool shortcut_handling_suspended_;
  77
  78   // Weak pointer to the our profile. Not owned by us.
  79   Profile* profile_;
  80
  81   // The browser window the accelerators are associated with.
  82   gfx::NativeWindow window_;
  83
  84   // The accelerator group used to handle accelerators, owned by this object.
  85   GtkAccelGroup* accel_group_;
  86
  87   // The content notification registrar for listening to extension events.
  88   content::NotificationRegistrar registrar_;
  89
  90   DISALLOW_COPY_AND_ASSIGN(ExtensionKeybindingRegistryGtk);
  91 };
  92
  93 #endif  // CHROME_BROWSER_UI_GTK_EXTENSIONS_EXTENSION_KEYBINDING_REGISTRY_GTK_H_