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/containers/scoped_ptr_map.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/scoped_observer.h"
  14 #include "chrome/browser/extensions/window_controller_list_observer.h"
  15 #include "content/public/browser/notification_observer.h"
  16 #include "content/public/browser/notification_registrar.h"
  17 #include "extensions/browser/app_window/app_window_registry.h"
  18 #include "extensions/browser/extension_event_histogram_value.h"
  19
  20 #if !defined(OS_MACOSX)
  21 #include "ui/views/focus/widget_focus_manager.h"
  22 #endif
  23
  24 class Profile;
  25
  26 namespace base {
  27 class ListValue;
  28 }
  29
  30 namespace extensions {
  31
  32 class AppWindow;
  33 class AppWindowController;
  34 class WindowControllerList;
  35
  36 // The WindowsEventRouter sends chrome.windows.* events to listeners
  37 // inside extension process renderers. The router listens to *all* events,
  38 // but will only route events within a profile to extension processes in the
  39 // same profile.
  40 class WindowsEventRouter : public AppWindowRegistry::Observer,
  41                            public WindowControllerListObserver,
  42 #if !defined(OS_MACOSX)
  43                            public views::WidgetFocusChangeListener,
  44 #endif
  45                            public content::NotificationObserver {
  46  public:
  47   explicit WindowsEventRouter(Profile* profile);
  48   ~WindowsEventRouter() override;
  49
  50   // |window_controller| is NULL to indicate a focused window has lost focus.
  51   void OnActiveWindowChanged(WindowController* window_controller);
  52
  53  private:
  54   // extensions::AppWindowRegistry::Observer:
  55   void OnAppWindowAdded(extensions::AppWindow* app_window) override;
  56   void OnAppWindowRemoved(extensions::AppWindow* app_window) override;
  57   void OnAppWindowActivated(extensions::AppWindow* app_window) override;
  58
  59   // WindowControllerListObserver methods:
  60   void OnWindowControllerAdded(WindowController* window_controller) override;
  61   void OnWindowControllerRemoved(WindowController* window) override;
  62
  63 #if !defined(OS_MACOSX)
  64   void OnNativeFocusChanged(gfx::NativeView focused_now) override;
  65 #endif
  66
  67   // content::NotificationObserver.
  68   void Observe(int type,
  69                const content::NotificationSource& source,
  70                const content::NotificationDetails& details) override;
  71
  72   void DispatchEvent(events::HistogramValue histogram_value,
  73                      const std::string& event_name,
  74                      WindowController* window_controller,
  75                      scoped_ptr<base::ListValue> args);
  76   bool HasEventListener(const std::string& event_name);
  77   void AddAppWindow(extensions::AppWindow* app_window);
  78
  79   content::NotificationRegistrar registrar_;
  80
  81   // The main profile that owns this event router.
  82   Profile* profile_;
  83
  84   // The profile the currently focused window belongs to; either the main or
  85   // incognito profile or NULL (none of the above). We remember this in order
  86   // to correctly handle focus changes between non-OTR and OTR windows.
  87   Profile* focused_profile_;
  88
  89   // The currently focused window. We keep this so as to avoid sending multiple
  90   // windows.onFocusChanged events with the same windowId.
  91   int focused_window_id_;
  92
  93   typedef base::ScopedPtrMap<int, scoped_ptr<AppWindowController>> AppWindowMap;
  94   // Map of application windows, the key to the session of the app window.
  95   AppWindowMap app_windows_;
  96
  97   // Observed AppWindowRegistry.
  98   ScopedObserver<AppWindowRegistry, AppWindowRegistry::Observer>
  99       observed_app_registry_;
 100
 101   // Observed WindowControllerList.
 102   ScopedObserver<WindowControllerList, WindowControllerListObserver>
 103       observed_controller_list_;
 104
 105   DISALLOW_COPY_AND_ASSIGN(WindowsEventRouter);
 106 };
 107
 108 }  // namespace extensions
 109
 110 #endif  // CHROME_BROWSER_EXTENSIONS_API_TABS_WINDOWS_EVENT_ROUTER_H_