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// Copyright 2012 The Chromium Authors
// 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"
#include "ash/public/cpp/shelf_types.h"
namespace aura {
class Window;
}
namespace ash {
class ASH_EXPORT ShellObserver {
public:
// 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 when a root window is about to be shutdown.
virtual void OnRootWindowWillShutdown(aura::Window* root_window) {}
// Invoked when the shelf alignment in |root_window| is changed.
virtual void OnShelfAlignmentChanged(aura::Window* root_window,
ShelfAlignment old_alignment) {}
// Invoked when user work area insets (accessibility panel, docked magnifier,
// keyboard) in |root_window| changed.
// This notification is not fired when shelf bounds changed.
virtual void OnUserWorkAreaInsetsChanged(aura::Window* root_window) {}
// Invoked when entering or exiting fullscreen mode in |container|.
// |container| is always the active desk container.
virtual void OnFullscreenStateChanged(bool is_fullscreen,
aura::Window* container) {}
// Invoked when |pinned_window| enter or exit pinned mode.
virtual void OnPinnedStateChanged(aura::Window* pinned_window) {}
virtual void OnDisplayForNewWindowsChanged() {}
// Called when dictation is activated.
virtual void OnDictationStarted() {}
// Called when dicatation is ended.
virtual void OnDictationEnded() {}
// Called at the end of Shell::Init.
virtual void OnShellInitialized() {}
// Called at the beginning of ~Shell.
virtual void OnShellDestroying() {}
// Called near the end of ~Shell. Shell::Get() still returns the Shell, but
// most of Shell's state has been deleted.
virtual void OnShellDestroyed() {}
protected:
virtual ~ShellObserver() {}
};
} // namespace ash
#endif // ASH_SHELL_OBSERVER_H_
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