src/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 "content/public/browser/web_contents_observer.h"
  19 #include "ui/aura/client/activation_change_observer.h"
  20 #include "ui/aura/window_observer.h"
  21 #include "ui/gfx/display_observer.h"
  22
  23 namespace aura {
  24 class Window;
  25
  26 namespace client {
  27 class ActivationClient;
  28 }
  29 }  // namespace aura
  30
  31 class Browser;
  32
  33 // BrowserStatusMonitor monitors creation/deletion of Browser and its
  34 // TabStripModel to keep the launcher representation up to date as the
  35 // active tab changes.
  36 class BrowserStatusMonitor : public aura::client::ActivationChangeObserver,
  37                              public aura::WindowObserver,
  38                              public chrome::BrowserListObserver,
  39                              public gfx::DisplayObserver,
  40                              public TabStripModelObserver {
  41  public:
  42   explicit BrowserStatusMonitor(ChromeLauncherController* launcher_controller);
  43   virtual ~BrowserStatusMonitor();
  44
  45   // A function which gets called when the current user has changed.
  46   // Note that this function is called by the ChromeLauncherController to be
  47   // able to do the activation in a proper order - rather then setting an
  48   // observer.
  49   virtual void ActiveUserChanged(const std::string& user_email) {}
  50
  51   // A shortcut to call the ChromeLauncherController's UpdateAppState().
  52   void UpdateAppItemState(content::WebContents* contents,
  53                           ChromeLauncherController::AppState app_state);
  54
  55   // A shortcut to call the BrowserShortcutLauncherItemController's
  56   // UpdateBrowserItemState().
  57   void UpdateBrowserItemState();
  58
  59   // aura::client::ActivationChangeObserver overrides:
  60   virtual void OnWindowActivated(aura::Window* gained_active,
  61                                  aura::Window* lost_active) OVERRIDE;
  62
  63   // aura::WindowObserver overrides:
  64   virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE;
  65
  66   // chrome::BrowserListObserver overrides:
  67   virtual void OnBrowserAdded(Browser* browser) OVERRIDE;
  68   virtual void OnBrowserRemoved(Browser* browser) OVERRIDE;
  69
  70   // gfx::DisplayObserver overrides:
  71   virtual void OnDisplayBoundsChanged(const gfx::Display& display) OVERRIDE;
  72   virtual void OnDisplayAdded(const gfx::Display& new_display) OVERRIDE;
  73   virtual void OnDisplayRemoved(const gfx::Display& old_display) OVERRIDE;
  74
  75   // TabStripModelObserver overrides:
  76   virtual void ActiveTabChanged(content::WebContents* old_contents,
  77                                 content::WebContents* new_contents,
  78                                 int index,
  79                                 int reason) OVERRIDE;
  80   virtual void TabReplacedAt(TabStripModel* tab_strip_model,
  81                              content::WebContents* old_contents,
  82                              content::WebContents* new_contents,
  83                              int index) OVERRIDE;
  84   virtual void TabInsertedAt(content::WebContents* contents,
  85                              int index,
  86                              bool foreground) OVERRIDE;
  87   virtual void TabClosingAt(TabStripModel* tab_strip_mode,
  88                             content::WebContents* contents,
  89                             int index) OVERRIDE;
  90
  91  protected:
  92   // Add a V1 application to the shelf. This can get overwritten for multi
  93   // profile implementations.
  94   virtual void AddV1AppToShelf(Browser* browser);
  95
  96   // Remove a V1 application from the shelf. This can get overwritten for multi
  97   // profile implementations.
  98   virtual void RemoveV1AppFromShelf(Browser* browser);
  99
 100   // Check if V1 application is currently in the shelf.
 101   bool IsV1AppInShelf(Browser* browser);
 102
 103  private:
 104   // This class monitors the WebContent of the all tab and notifies a navigation
 105   // to the BrowserStatusMonitor.
 106   class LocalWebContentsObserver : public content::WebContentsObserver {
 107    public:
 108     LocalWebContentsObserver(content::WebContents* contents,
 109                              BrowserStatusMonitor* monitor);
 110     virtual ~LocalWebContentsObserver();
 111
 112     // content::WebContentsObserver overrides:
 113     virtual void DidNavigateMainFrame(
 114         const content::LoadCommittedDetails& details,
 115         const content::FrameNavigateParams& params) OVERRIDE;
 116
 117    private:
 118     BrowserStatusMonitor* monitor_;
 119
 120     DISALLOW_COPY_AND_ASSIGN(LocalWebContentsObserver);
 121   };
 122
 123   typedef std::map<Browser*, std::string> BrowserToAppIDMap;
 124   typedef std::map<content::WebContents*, LocalWebContentsObserver*>
 125       WebContentsToObserverMap;
 126
 127   // Create LocalWebContentsObserver for |contents|.
 128   void AddWebContentsObserver(content::WebContents* contents);
 129
 130   // Remove LocalWebContentsObserver for |contents|.
 131   void RemoveWebContentsObserver(content::WebContents* contents);
 132
 133   // Retruns the ShelfID for |contents|.
 134   ash::ShelfID GetShelfIDForWebContents(content::WebContents* contents);
 135
 136   ChromeLauncherController* launcher_controller_;
 137
 138   // Hold all observed activation clients.
 139   ScopedObserverWithDuplicatedSources<aura::client::ActivationClient,
 140       aura::client::ActivationChangeObserver> observed_activation_clients_;
 141
 142   // Hold all observed root windows.
 143   ScopedObserver<aura::Window, aura::WindowObserver> observed_root_windows_;
 144
 145   BrowserToAppIDMap browser_to_app_id_map_;
 146
 147   WebContentsToObserverMap webcontents_to_observer_map_;
 148
 149   DISALLOW_COPY_AND_ASSIGN(BrowserStatusMonitor);
 150 };
 151
 152 #endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_BROWSER_STATUS_MONITOR_H_