chrome/browser/ui/ash/launcher/browser_status_monitor.h

   1 // Copyright 2013 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_ASH_LAUNCHER_BROWSER_STATUS_MONITOR_H_
   6 #define CHROME_BROWSER_UI_ASH_LAUNCHER_BROWSER_STATUS_MONITOR_H_
   7
   8 #include <map>
   9 #include <string>
  10
  11 #include "ash/shelf/scoped_observer_with_duplicated_sources.h"
  12 #include "base/basictypes.h"
  13 #include "base/compiler_specific.h"
  14 #include "base/scoped_observer.h"
  15 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
  16 #include "chrome/browser/ui/browser_list_observer.h"
  17 #include "chrome/browser/ui/tabs/tab_strip_model_observer.h"
  18 #include "ui/aura/window_observer.h"
  19 #include "ui/gfx/display_observer.h"
  20 #include "ui/wm/public/activation_change_observer.h"
  21
  22 namespace aura {
  23 class Window;
  24
  25 namespace client {
  26 class ActivationClient;
  27 }
  28 }  // namespace aura
  29
  30 class Browser;
  31
  32 // BrowserStatusMonitor monitors creation/deletion of Browser and its
  33 // TabStripModel to keep the launcher representation up to date as the
  34 // active tab changes.
  35 class BrowserStatusMonitor : public aura::client::ActivationChangeObserver,
  36                              public aura::WindowObserver,
  37                              public chrome::BrowserListObserver,
  38                              public gfx::DisplayObserver,
  39                              public TabStripModelObserver {
  40  public:
  41   explicit BrowserStatusMonitor(ChromeLauncherController* launcher_controller);
  42   ~BrowserStatusMonitor() override;
  43
  44   // A function which gets called when the current user has changed.
  45   // Note that this function is called by the ChromeLauncherController to be
  46   // able to do the activation in a proper order - rather then setting an
  47   // observer.
  48   virtual void ActiveUserChanged(const std::string& user_email) {}
  49
  50   // A shortcut to call the ChromeLauncherController's UpdateAppState().
  51   void UpdateAppItemState(content::WebContents* contents,
  52                           ChromeLauncherController::AppState app_state);
  53
  54   // A shortcut to call the BrowserShortcutLauncherItemController's
  55   // UpdateBrowserItemState().
  56   void UpdateBrowserItemState();
  57
  58   // aura::client::ActivationChangeObserver overrides:
  59   void OnWindowActivated(aura::Window* gained_active,
  60                          aura::Window* lost_active) override;
  61
  62   // aura::WindowObserver overrides:
  63   void OnWindowDestroyed(aura::Window* window) override;
  64
  65   // chrome::BrowserListObserver overrides:
  66   void OnBrowserAdded(Browser* browser) override;
  67   void OnBrowserRemoved(Browser* browser) override;
  68
  69   // gfx::DisplayObserver overrides:
  70   void OnDisplayAdded(const gfx::Display& new_display) override;
  71   void OnDisplayRemoved(const gfx::Display& old_display) override;
  72   void OnDisplayMetricsChanged(const gfx::Display& display,
  73                                uint32_t metrics) override;
  74
  75   // TabStripModelObserver overrides:
  76   void ActiveTabChanged(content::WebContents* old_contents,
  77                         content::WebContents* new_contents,
  78                         int index,
  79                         int reason) override;
  80   void TabReplacedAt(TabStripModel* tab_strip_model,
  81                      content::WebContents* old_contents,
  82                      content::WebContents* new_contents,
  83                      int index) override;
  84   void TabInsertedAt(content::WebContents* contents,
  85                      int index,
  86                      bool foreground) override;
  87   void TabClosingAt(TabStripModel* tab_strip_mode,
  88                     content::WebContents* contents,
  89                     int index) override;
  90
  91   // Called from our own |LocalWebContentsObserver| when web contents did go
  92   // away without any other notification. This might happen in case of
  93   // application uninstalls, page crashes, ...).
  94   void WebContentsDestroyed(content::WebContents* web_contents);
  95
  96  protected:
  97   // Add a V1 application to the shelf. This can get overwritten for multi
  98   // profile implementations.
  99   virtual void AddV1AppToShelf(Browser* browser);
 100
 101   // Remove a V1 application from the shelf. This can get overwritten for multi
 102   // profile implementations.
 103   virtual void RemoveV1AppFromShelf(Browser* browser);
 104
 105   // Check if V1 application is currently in the shelf.
 106   bool IsV1AppInShelf(Browser* browser);
 107
 108  private:
 109   class LocalWebContentsObserver;
 110   class SettingsWindowObserver;
 111
 112   typedef std::map<Browser*, std::string> BrowserToAppIDMap;
 113   typedef std::map<content::WebContents*, LocalWebContentsObserver*>
 114       WebContentsToObserverMap;
 115
 116   // Create LocalWebContentsObserver for |contents|.
 117   void AddWebContentsObserver(content::WebContents* contents);
 118
 119   // Remove LocalWebContentsObserver for |contents|.
 120   void RemoveWebContentsObserver(content::WebContents* contents);
 121
 122   // Returns the ShelfID for |contents|.
 123   ash::ShelfID GetShelfIDForWebContents(content::WebContents* contents);
 124
 125   // Sets the shelf id for browsers represented by the browser shortcut item.
 126   void SetShelfIDForBrowserWindowContents(Browser* browser,
 127                                           content::WebContents* web_contents);
 128
 129   ChromeLauncherController* launcher_controller_;
 130
 131   // Hold all observed activation clients.
 132   ScopedObserverWithDuplicatedSources<aura::client::ActivationClient,
 133       aura::client::ActivationChangeObserver> observed_activation_clients_;
 134
 135   // Hold all observed root windows.
 136   ScopedObserver<aura::Window, aura::WindowObserver> observed_root_windows_;
 137
 138   BrowserToAppIDMap browser_to_app_id_map_;
 139   WebContentsToObserverMap webcontents_to_observer_map_;
 140   scoped_ptr<SettingsWindowObserver> settings_window_observer_;
 141
 142   DISALLOW_COPY_AND_ASSIGN(BrowserStatusMonitor);
 143 };
 144
 145 #endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_BROWSER_STATUS_MONITOR_H_