ash/shell_delegate.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 ASH_SHELL_DELEGATE_H_
   6 #define ASH_SHELL_DELEGATE_H_
   7
   8 #include <string>
   9
  10 #include "ash/ash_export.h"
  11 #include "ash/magnifier/magnifier_constants.h"
  12 #include "ash/shell.h"
  13 #include "base/callback.h"
  14 #include "base/strings/string16.h"
  15
  16 namespace app_list {
  17 class AppListViewDelegate;
  18 }
  19
  20 namespace aura {
  21 class RootWindow;
  22 class Window;
  23 namespace client {
  24 class UserActionClient;
  25 }
  26 }
  27
  28 namespace ui {
  29 class MenuModel;
  30 }
  31
  32 namespace views {
  33 class Widget;
  34 }
  35
  36 namespace keyboard {
  37 class KeyboardControllerProxy;
  38 }
  39
  40 namespace ash {
  41
  42 class CapsLockDelegate;
  43 class LauncherDelegate;
  44 class LauncherModel;
  45 struct LauncherItem;
  46 class RootWindowHostFactory;
  47 class SessionStateDelegate;
  48 class SystemTrayDelegate;
  49 class UserWallpaperDelegate;
  50
  51 enum UserMetricsAction {
  52   UMA_ACCEL_KEYBOARD_BRIGHTNESS_DOWN_F6,
  53   UMA_ACCEL_KEYBOARD_BRIGHTNESS_UP_F7,
  54   UMA_ACCEL_LOCK_SCREEN_L,
  55   UMA_ACCEL_LOCK_SCREEN_LOCK_BUTTON,
  56   UMA_ACCEL_LOCK_SCREEN_POWER_BUTTON,
  57   UMA_ACCEL_FULLSCREEN_F4,
  58   UMA_ACCEL_MAXIMIZE_RESTORE_F4,
  59   UMA_ACCEL_NEWTAB_T,
  60   UMA_ACCEL_NEXTWINDOW_F5,
  61   UMA_ACCEL_NEXTWINDOW_TAB,
  62   UMA_ACCEL_OVERVIEW_F5,
  63   UMA_ACCEL_PREVWINDOW_F5,
  64   UMA_ACCEL_PREVWINDOW_TAB,
  65   UMA_ACCEL_EXIT_FIRST_Q,
  66   UMA_ACCEL_EXIT_SECOND_Q,
  67   UMA_ACCEL_SEARCH_LWIN,
  68   UMA_ACCEL_SHUT_DOWN_POWER_BUTTON,
  69   UMA_CLOSE_THROUGH_CONTEXT_MENU,
  70   UMA_LAUNCHER_CLICK_ON_APP,
  71   UMA_LAUNCHER_CLICK_ON_APPLIST_BUTTON,
  72   UMA_MINIMIZE_PER_KEY,
  73   UMA_MOUSE_DOWN,
  74   UMA_TOGGLE_MAXIMIZE_CAPTION_CLICK,
  75   UMA_TOGGLE_MAXIMIZE_CAPTION_GESTURE,
  76   UMA_TOUCHSCREEN_TAP_DOWN,
  77   UMA_TRAY_HELP,
  78   UMA_TRAY_LOCK_SCREEN,
  79   UMA_TRAY_SHUT_DOWN,
  80   UMA_WINDOW_APP_CLOSE_BUTTON_CLICK,
  81   UMA_WINDOW_CLOSE_BUTTON_CLICK,
  82   UMA_WINDOW_MAXIMIZE_BUTTON_CLICK_EXIT_FULLSCREEN,
  83   UMA_WINDOW_MAXIMIZE_BUTTON_CLICK_MAXIMIZE,
  84   UMA_WINDOW_MAXIMIZE_BUTTON_CLICK_MINIMIZE,
  85   UMA_WINDOW_MAXIMIZE_BUTTON_CLICK_RESTORE,
  86   UMA_WINDOW_MAXIMIZE_BUTTON_MAXIMIZE,
  87   UMA_WINDOW_MAXIMIZE_BUTTON_MAXIMIZE_LEFT,
  88   UMA_WINDOW_MAXIMIZE_BUTTON_MAXIMIZE_RIGHT,
  89   UMA_WINDOW_MAXIMIZE_BUTTON_MINIMIZE,
  90   UMA_WINDOW_MAXIMIZE_BUTTON_RESTORE,
  91   UMA_WINDOW_MAXIMIZE_BUTTON_SHOW_BUBBLE,
  92
  93   // Thumbnail sized overview of windows triggered. This is a subset of
  94   // UMA_WINDOW_SELECTION triggered by lingering during alt+tab cycles or
  95   // pressing the overview key.
  96   UMA_WINDOW_OVERVIEW,
  97
  98   // Window selection started by beginning an alt+tab cycle or pressing the
  99   // overview key. This does not count each step through an alt+tab cycle.
 100   UMA_WINDOW_SELECTION,
 101 };
 102
 103 enum AccessibilityNotificationVisibility {
 104   A11Y_NOTIFICATION_NONE,
 105   A11Y_NOTIFICATION_SHOW,
 106 };
 107
 108 // Delegate of the Shell.
 109 class ASH_EXPORT ShellDelegate {
 110  public:
 111   // The Shell owns the delegate.
 112   virtual ~ShellDelegate() {}
 113
 114   // Returns true if this is the first time that the shell has been run after
 115   // the system has booted.  false is returned after the shell has been
 116   // restarted, typically due to logging in as a guest or logging out.
 117   virtual bool IsFirstRunAfterBoot() const = 0;
 118
 119   // Returns true if multi-profiles feature is enabled.
 120   virtual bool IsMultiProfilesEnabled() const = 0;
 121
 122   // Returns true if we're running in forced app mode.
 123   virtual bool IsRunningInForcedAppMode() const = 0;
 124
 125   // Called before processing |Shell::Init()| so that the delegate
 126   // can perform tasks necessary before the shell is initialized.
 127   virtual void PreInit() = 0;
 128
 129   // Shuts down the environment.
 130   virtual void Shutdown() = 0;
 131
 132   // Invoked when the user uses Ctrl-Shift-Q to close chrome.
 133   virtual void Exit() = 0;
 134
 135   // Invoked when the user uses Ctrl+T to open a new tab.
 136   virtual void NewTab() = 0;
 137
 138   // Invoked when the user uses Ctrl-N or Ctrl-Shift-N to open a new window.
 139   virtual void NewWindow(bool incognito) = 0;
 140
 141   // Invoked when the user uses Shift+F4 to toggle the window fullscreen state.
 142   virtual void ToggleFullscreen() = 0;
 143
 144   // Invoked when the user uses F4 to toggle window maximized state.
 145   virtual void ToggleMaximized() = 0;
 146
 147   // Invoked when an accelerator is used to open the file manager.
 148   virtual void OpenFileManager(bool as_dialog) = 0;
 149
 150   // Invoked when the user opens Crosh.
 151   virtual void OpenCrosh() = 0;
 152
 153   // Invoked when the user uses Shift+Ctrl+T to restore the closed tab.
 154   virtual void RestoreTab() = 0;
 155
 156   // Shows the keyboard shortcut overlay.
 157   virtual void ShowKeyboardOverlay() = 0;
 158
 159   // Create a shell-specific keyboard::KeyboardControllerProxy
 160   virtual keyboard::KeyboardControllerProxy*
 161       CreateKeyboardControllerProxy() = 0;
 162
 163   // Shows the task manager window.
 164   virtual void ShowTaskManager() = 0;
 165
 166   // Get the current browser context. This will get us the current profile.
 167   virtual content::BrowserContext* GetCurrentBrowserContext() = 0;
 168
 169   // Invoked to toggle spoken feedback for accessibility
 170   virtual void ToggleSpokenFeedback(
 171       AccessibilityNotificationVisibility notify) = 0;
 172
 173   // Returns true if spoken feedback is enabled.
 174   virtual bool IsSpokenFeedbackEnabled() const = 0;
 175
 176   // Invoked to toggle high contrast for accessibility.
 177   virtual void ToggleHighContrast() = 0;
 178
 179   // Returns true if high contrast mode is enabled.
 180   virtual bool IsHighContrastEnabled() const = 0;
 181
 182   // Invoked to enable the screen magnifier.
 183   virtual void SetMagnifierEnabled(bool enabled) = 0;
 184
 185   // Invoked to change the type of the screen magnifier.
 186   virtual void SetMagnifierType(MagnifierType type) = 0;
 187
 188   // Returns if the screen magnifier is enabled or not.
 189   virtual bool IsMagnifierEnabled() const = 0;
 190
 191   // Returns the current screen magnifier mode.
 192   virtual MagnifierType GetMagnifierType() const = 0;
 193
 194   // Invoked to enable Large Cursor.
 195   virtual void SetLargeCursorEnabled(bool enabled) = 0;
 196
 197   // Returns if Large Cursor is enabled or not.
 198   virtual bool IsLargeCursorEnabled() const = 0;
 199
 200   // Returns true if the user want to show accesibility menu even when all the
 201   // accessibility features are disabled.
 202   virtual bool ShouldAlwaysShowAccessibilityMenu() const = 0;
 203
 204   // Cancel all current and queued speech immediately.
 205   virtual void SilenceSpokenFeedback() const = 0;
 206
 207   // Invoked to create an AppListViewDelegate. Shell takes the ownership of
 208   // the created delegate.
 209   virtual app_list::AppListViewDelegate* CreateAppListViewDelegate() = 0;
 210
 211   // Creates a new LauncherDelegate. Shell takes ownership of the returned
 212   // value.
 213   virtual LauncherDelegate* CreateLauncherDelegate(
 214       ash::LauncherModel* model) = 0;
 215
 216   // Creates a system-tray delegate. Shell takes ownership of the delegate.
 217   virtual SystemTrayDelegate* CreateSystemTrayDelegate() = 0;
 218
 219   // Creates a user wallpaper delegate. Shell takes ownership of the delegate.
 220   virtual UserWallpaperDelegate* CreateUserWallpaperDelegate() = 0;
 221
 222   // Creates a caps lock delegate. Shell takes ownership of the delegate.
 223   virtual CapsLockDelegate* CreateCapsLockDelegate() = 0;
 224
 225   // Creates a session state delegate. Shell takes ownership of the delegate.
 226   virtual SessionStateDelegate* CreateSessionStateDelegate() = 0;
 227
 228   // Creates a user action client. Shell takes ownership of the object.
 229   virtual aura::client::UserActionClient* CreateUserActionClient() = 0;
 230
 231   // Opens the feedback page for "Report Issue".
 232   virtual void OpenFeedbackPage() = 0;
 233
 234   // Records that the user performed an action.
 235   virtual void RecordUserMetricsAction(UserMetricsAction action) = 0;
 236
 237   // Handles the Next Track Media shortcut key.
 238   virtual void HandleMediaNextTrack() = 0;
 239
 240   // Handles the Play/Pause Toggle Media shortcut key.
 241   virtual void HandleMediaPlayPause() = 0;
 242
 243   // Handles the Previous Track Media shortcut key.
 244   virtual void HandleMediaPrevTrack() = 0;
 245
 246   // Saves the zoom scale of the full screen magnifier.
 247   virtual void SaveScreenMagnifierScale(double scale) = 0;
 248
 249   // Gets a saved value of the zoom scale of full screen magnifier. If a value
 250   // is not saved, return a negative value.
 251   virtual double GetSavedScreenMagnifierScale() = 0;
 252
 253   // Creates a menu model of the context for the |root_window|.
 254   virtual ui::MenuModel* CreateContextMenu(aura::RootWindow* root_window) = 0;
 255
 256   // Creates a root window host factory. Shell takes ownership of the returned
 257   // value.
 258   virtual RootWindowHostFactory* CreateRootWindowHostFactory() = 0;
 259
 260   // Get the product name.
 261   virtual base::string16 GetProductName() const = 0;
 262 };
 263
 264 }  // namespace ash
 265
 266 #endif  // ASH_SHELL_DELEGATE_H_