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 #include "base/time/time.h"
  16
  17 namespace app_list {
  18 class AppListViewDelegate;
  19 }
  20
  21 namespace aura {
  22 class RootWindow;
  23 class Window;
  24 namespace client {
  25 class UserActionClient;
  26 }
  27 }
  28
  29 namespace ui {
  30 class MenuModel;
  31 }
  32
  33 namespace views {
  34 class Widget;
  35 }
  36
  37 namespace keyboard {
  38 class KeyboardControllerProxy;
  39 }
  40
  41 namespace ash {
  42
  43 class CapsLockDelegate;
  44 class LauncherDelegate;
  45 class LauncherModel;
  46 struct LauncherItem;
  47 class RootWindowHostFactory;
  48 class SessionStateDelegate;
  49 class SystemTrayDelegate;
  50 class UserWallpaperDelegate;
  51
  52 enum UserMetricsAction {
  53   UMA_ACCEL_KEYBOARD_BRIGHTNESS_DOWN_F6,
  54   UMA_ACCEL_KEYBOARD_BRIGHTNESS_UP_F7,
  55   UMA_ACCEL_LOCK_SCREEN_L,
  56   UMA_ACCEL_LOCK_SCREEN_LOCK_BUTTON,
  57   UMA_ACCEL_LOCK_SCREEN_POWER_BUTTON,
  58   UMA_ACCEL_FULLSCREEN_F4,
  59   UMA_ACCEL_MAXIMIZE_RESTORE_F4,
  60   UMA_ACCEL_NEWTAB_T,
  61   UMA_ACCEL_NEXTWINDOW_F5,
  62   UMA_ACCEL_NEXTWINDOW_TAB,
  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
  94 enum AccessibilityNotificationVisibility {
  95   A11Y_NOTIFICATION_NONE,
  96   A11Y_NOTIFICATION_SHOW,
  97 };
  98
  99 // Delegate of the Shell.
 100 class ASH_EXPORT ShellDelegate {
 101  public:
 102   // The Shell owns the delegate.
 103   virtual ~ShellDelegate() {}
 104
 105   // Returns true if this is the first time that the shell has been run after
 106   // the system has booted.  false is returned after the shell has been
 107   // restarted, typically due to logging in as a guest or logging out.
 108   virtual bool IsFirstRunAfterBoot() const = 0;
 109
 110   // Returns true if multi-profiles feature is enabled.
 111   virtual bool IsMultiProfilesEnabled() const = 0;
 112
 113   // Returns true if we're running in forced app mode.
 114   virtual bool IsRunningInForcedAppMode() const = 0;
 115
 116   // Called before processing |Shell::Init()| so that the delegate
 117   // can perform tasks necessary before the shell is initialized.
 118   virtual void PreInit() = 0;
 119
 120   // Shuts down the environment.
 121   virtual void Shutdown() = 0;
 122
 123   // Invoked when the user uses Ctrl-Shift-Q to close chrome.
 124   virtual void Exit() = 0;
 125
 126   // Invoked when the user uses Ctrl+T to open a new tab.
 127   virtual void NewTab() = 0;
 128
 129   // Invoked when the user uses Ctrl-N or Ctrl-Shift-N to open a new window.
 130   virtual void NewWindow(bool incognito) = 0;
 131
 132   // Invoked when the user uses Shift+F4 to toggle the window fullscreen state.
 133   virtual void ToggleFullscreen() = 0;
 134
 135   // Invoked when the user uses F4 to toggle window maximized state.
 136   virtual void ToggleMaximized() = 0;
 137
 138   // Invoked when an accelerator is used to open the file manager.
 139   virtual void OpenFileManager(bool as_dialog) = 0;
 140
 141   // Invoked when the user opens Crosh.
 142   virtual void OpenCrosh() = 0;
 143
 144   // Invoked when the user uses Shift+Ctrl+T to restore the closed tab.
 145   virtual void RestoreTab() = 0;
 146
 147   // Shows the keyboard shortcut overlay.
 148   virtual void ShowKeyboardOverlay() = 0;
 149
 150   // Create a shell-specific keyboard::KeyboardControllerProxy
 151   virtual keyboard::KeyboardControllerProxy*
 152       CreateKeyboardControllerProxy() = 0;
 153
 154   // Shows the task manager window.
 155   virtual void ShowTaskManager() = 0;
 156
 157   // Get the current browser context. This will get us the current profile.
 158   virtual content::BrowserContext* GetCurrentBrowserContext() = 0;
 159
 160   // Invoked to toggle spoken feedback for accessibility
 161   virtual void ToggleSpokenFeedback(
 162       AccessibilityNotificationVisibility notify) = 0;
 163
 164   // Returns true if spoken feedback is enabled.
 165   virtual bool IsSpokenFeedbackEnabled() const = 0;
 166
 167   // Invoked to toggle high contrast for accessibility.
 168   virtual void ToggleHighContrast() = 0;
 169
 170   // Returns true if high contrast mode is enabled.
 171   virtual bool IsHighContrastEnabled() const = 0;
 172
 173   // Invoked to enable the screen magnifier.
 174   virtual void SetMagnifierEnabled(bool enabled) = 0;
 175
 176   // Invoked to change the type of the screen magnifier.
 177   virtual void SetMagnifierType(MagnifierType type) = 0;
 178
 179   // Returns if the screen magnifier is enabled or not.
 180   virtual bool IsMagnifierEnabled() const = 0;
 181
 182   // Returns the current screen magnifier mode.
 183   virtual MagnifierType GetMagnifierType() const = 0;
 184
 185   // Invoked to enable Large Cursor.
 186   virtual void SetLargeCursorEnabled(bool enabled) = 0;
 187
 188   // Returns if Large Cursor is enabled or not.
 189   virtual bool IsLargeCursorEnabled() const = 0;
 190
 191   // Returns true if the user want to show accesibility menu even when all the
 192   // accessibility features are disabled.
 193   virtual bool ShouldAlwaysShowAccessibilityMenu() const = 0;
 194
 195   // Cancel all current and queued speech immediately.
 196   virtual void SilenceSpokenFeedback() const = 0;
 197
 198   // Invoked to create an AppListViewDelegate. Shell takes the ownership of
 199   // the created delegate.
 200   virtual app_list::AppListViewDelegate* CreateAppListViewDelegate() = 0;
 201
 202   // Creates a new LauncherDelegate. Shell takes ownership of the returned
 203   // value.
 204   virtual LauncherDelegate* CreateLauncherDelegate(
 205       ash::LauncherModel* model) = 0;
 206
 207   // Creates a system-tray delegate. Shell takes ownership of the delegate.
 208   virtual SystemTrayDelegate* CreateSystemTrayDelegate() = 0;
 209
 210   // Creates a user wallpaper delegate. Shell takes ownership of the delegate.
 211   virtual UserWallpaperDelegate* CreateUserWallpaperDelegate() = 0;
 212
 213   // Creates a caps lock delegate. Shell takes ownership of the delegate.
 214   virtual CapsLockDelegate* CreateCapsLockDelegate() = 0;
 215
 216   // Creates a session state delegate. Shell takes ownership of the delegate.
 217   virtual SessionStateDelegate* CreateSessionStateDelegate() = 0;
 218
 219   // Creates a user action client. Shell takes ownership of the object.
 220   virtual aura::client::UserActionClient* CreateUserActionClient() = 0;
 221
 222   // Opens the feedback page for "Report Issue".
 223   virtual void OpenFeedbackPage() = 0;
 224
 225   // Records that the user performed an action.
 226   virtual void RecordUserMetricsAction(UserMetricsAction action) = 0;
 227
 228   // Handles the Next Track Media shortcut key.
 229   virtual void HandleMediaNextTrack() = 0;
 230
 231   // Handles the Play/Pause Toggle Media shortcut key.
 232   virtual void HandleMediaPlayPause() = 0;
 233
 234   // Handles the Previous Track Media shortcut key.
 235   virtual void HandleMediaPrevTrack() = 0;
 236
 237   // Produces l10n-ed text of remaining time, e.g.: "13 minutes left" or
 238   // "13 Minuten links".
 239   // Used, for example, to display the remaining battery life.
 240   virtual base::string16 GetTimeRemainingString(base::TimeDelta delta) = 0;
 241
 242   // Produces l10n-ed text for time duration, e.g.: "13 minutes" or "2 hours".
 243   virtual base::string16 GetTimeDurationLongString(base::TimeDelta delta) = 0;
 244
 245   // Saves the zoom scale of the full screen magnifier.
 246   virtual void SaveScreenMagnifierScale(double scale) = 0;
 247
 248   // Gets a saved value of the zoom scale of full screen magnifier. If a value
 249   // is not saved, return a negative value.
 250   virtual double GetSavedScreenMagnifierScale() = 0;
 251
 252   // Creates a menu model of the context for the |root_window|.
 253   virtual ui::MenuModel* CreateContextMenu(aura::RootWindow* root_window) = 0;
 254
 255   // Creates a root window host factory. Shell takes ownership of the returned
 256   // value.
 257   virtual RootWindowHostFactory* CreateRootWindowHostFactory() = 0;
 258
 259   // Get the product name.
 260   virtual base::string16 GetProductName() const = 0;
 261 };
 262
 263 }  // namespace ash
 264
 265 #endif  // ASH_SHELL_DELEGATE_H_