src/chrome/browser/extensions/api/tabs/windows_event_router.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_EXTENSIONS_API_TABS_WINDOWS_EVENT_ROUTER_H_
   6 #define CHROME_BROWSER_EXTENSIONS_API_TABS_WINDOWS_EVENT_ROUTER_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "chrome/browser/extensions/window_controller_list_observer.h"
  13 #include "content/public/browser/notification_observer.h"
  14 #include "content/public/browser/notification_registrar.h"
  15 #if defined(TOOLKIT_VIEWS)
  16 #include "ui/views/focus/widget_focus_manager.h"
  17 #endif
  18
  19 class Profile;
  20
  21 namespace base {
  22 class ListValue;
  23 }
  24
  25 namespace extensions {
  26
  27 // The WindowsEventRouter sends chrome.windows.* events to listeners
  28 // inside extension process renderers. The router listens to *all* events,
  29 // but will only route eventes within a profile to extension processes in the
  30 // same profile.
  31 class WindowsEventRouter : public WindowControllerListObserver,
  32 #if defined(TOOLKIT_VIEWS)
  33                           public views::WidgetFocusChangeListener,
  34 #endif
  35                           public content::NotificationObserver {
  36  public:
  37   explicit WindowsEventRouter(Profile* profile);
  38   ~WindowsEventRouter() override;
  39
  40   // WindowControllerListObserver methods:
  41   void OnWindowControllerAdded(WindowController* window_controller) override;
  42   void OnWindowControllerRemoved(WindowController* window) override;
  43
  44 #if defined(TOOLKIT_VIEWS)
  45   void OnNativeFocusChange(gfx::NativeView focused_before,
  46                            gfx::NativeView focused_now) override;
  47 #endif
  48
  49   // content::NotificationObserver.
  50   void Observe(int type,
  51                const content::NotificationSource& source,
  52                const content::NotificationDetails& details) override;
  53
  54   // |window_controller| is NULL to indicate a focused window has lost focus.
  55   void OnActiveWindowChanged(WindowController* window_controller);
  56
  57  private:
  58   void DispatchEvent(const std::string& event_name,
  59                      Profile* profile,
  60                      scoped_ptr<base::ListValue> args);
  61
  62   content::NotificationRegistrar registrar_;
  63
  64   // The main profile that owns this event router.
  65   Profile* profile_;
  66
  67   // The profile the currently focused window belongs to; either the main or
  68   // incognito profile or NULL (none of the above). We remember this in order
  69   // to correctly handle focus changes between non-OTR and OTR windows.
  70   Profile* focused_profile_;
  71
  72   // The currently focused window. We keep this so as to avoid sending multiple
  73   // windows.onFocusChanged events with the same windowId.
  74   int focused_window_id_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(WindowsEventRouter);
  77 };
  78
  79 }  // namespace extensions
  80
  81 #endif  // CHROME_BROWSER_EXTENSIONS_API_TABS_WINDOWS_EVENT_ROUTER_H_