blob: 02e08d286c736e7edb8c4a6c59a82872c866d7ef [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_SHELL_OBSERVER_H_
#define ASH_SHELL_OBSERVER_H_
#include "ash/ash_export.h"
#include "ash/login_status.h"
namespace aura {
class Window;
}
class PrefService;
namespace ash {
class ASH_EXPORT ShellObserver {
public:
// Called when the AppList is shown or dismissed.
virtual void OnAppListVisibilityChanged(bool shown,
aura::Window* root_window) {}
// Called when a casting session is started or stopped.
virtual void OnCastingSessionStartedOrStopped(bool started) {}
// Invoked after a non-primary root window is created.
virtual void OnRootWindowAdded(aura::Window* root_window) {}
// Invoked after the shelf has been created for |root_window|.
virtual void OnShelfCreatedForRootWindow(aura::Window* root_window) {}
// Invoked when the shelf alignment in |root_window| is changed.
virtual void OnShelfAlignmentChanged(aura::Window* root_window) {}
// Invoked when the shelf auto-hide behavior in |root_window| is changed.
virtual void OnShelfAutoHideBehaviorChanged(aura::Window* root_window) {}
// Invoked when the projection touch HUD is toggled.
virtual void OnTouchHudProjectionToggled(bool enabled) {}
// Invoked when entering or exiting fullscreen mode in |root_window|.
virtual void OnFullscreenStateChanged(bool is_fullscreen,
aura::Window* root_window) {}
// Invoked when |pinned_window| enter or exit pinned mode.
virtual void OnPinnedStateChanged(aura::Window* pinned_window) {}
// Called when the overview mode is about to be started (before the windows
// get re-arranged).
virtual void OnOverviewModeStarting() {}
// Called after overview mode has ended.
virtual void OnOverviewModeEnded() {}
// Called when the split view mode is about to be started (before the window
// gets snapped and activated).
virtual void OnSplitViewModeStarting() {}
// Called after split view mode has ended.
virtual void OnSplitViewModeEnded() {}
// Called when keyboard is activated/deactivated in |root_window|.
virtual void OnVirtualKeyboardStateChanged(bool activated,
aura::Window* root_window) {}
// Called when a new KeyboardController is created.
virtual void OnKeyboardControllerCreated() {}
// Called when voice interaction session starts / finishes.
virtual void OnVoiceInteractionStatusChanged(bool running) {}
// Called at the end of Shell::Init.
virtual void OnShellInitialized() {}
// Called near the end of ~Shell. Shell::Get() still returns the Shell, but
// most of Shell's state has been deleted.
virtual void OnShellDestroyed() {}
// Called when the user profile pref service is available. Also called after
// multiprofile user switch. Never called with the login screen profile.
// On mash will be called with null at the start of user switch then again
// with a pref service once the connection to the mojo pref service is made.
// TODO(jamescook): Either maintain pref service connections for all multiuser
// profiles or make the pref service switch atomic with active user switch.
// http://crbug.com/705347
virtual void OnActiveUserPrefServiceChanged(PrefService* pref_service) {}
protected:
virtual ~ShellObserver() {}
};
} // namespace ash
#endif // ASH_SHELL_OBSERVER_H_