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// 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_WM_APP_LIST_CONTROLLER_H_
#define ASH_WM_APP_LIST_CONTROLLER_H_
#include "ash/launcher/launcher_icon_observer.h"
#include "ash/shell_observer.h"
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/timer.h"
#include "ui/aura/event_filter.h"
#include "ui/aura/focus_change_observer.h"
#include "ui/aura/root_window_observer.h"
#include "ui/compositor/layer_animation_observer.h"
#include "ui/views/widget/widget.h"
namespace app_list {
class AppListView;
class PaginationModel;
}
namespace aura {
class LocatedEvent;
}
namespace ash {
namespace internal {
// AppListController is a controller that manages app list UI for shell.
// It creates AppListView and schedules showing/hiding animation.
// While the UI is visible, it monitors things such as app list widget's
// activation state and desktop mouse click to auto dismiss the UI.
class AppListController : public aura::EventFilter,
public aura::FocusChangeObserver,
public aura::RootWindowObserver,
public ui::ImplicitAnimationObserver,
public views::Widget::Observer,
public ShellObserver,
public LauncherIconObserver {
public:
AppListController();
virtual ~AppListController();
// Show/hide app list window.
void SetVisible(bool visible);
// Whether app list window is visible (shown or being shown).
bool IsVisible() const;
// Returns target visibility. This differs from IsVisible() if an animation
// is ongoing.
bool GetTargetVisibility() const { return is_visible_; }
// Returns app list window or NULL if it is not visible.
aura::Window* GetWindow();
private:
// Sets app list view. If we are in visible mode, start showing animation.
// Otherwise, we just close it.
void SetView(app_list::AppListView* view);
// Forgets the view.
void ResetView();
// Starts show/hide animation.
void ScheduleAnimation();
void ProcessLocatedEvent(aura::Window* target,
const aura::LocatedEvent& event);
// Makes app list bubble update its bounds.
void UpdateBounds();
// aura::EventFilter overrides:
virtual bool PreHandleKeyEvent(aura::Window* target,
aura::KeyEvent* event) OVERRIDE;
virtual bool PreHandleMouseEvent(aura::Window* target,
aura::MouseEvent* event) OVERRIDE;
virtual ui::TouchStatus PreHandleTouchEvent(aura::Window* target,
aura::TouchEvent* event) OVERRIDE;
virtual ui::GestureStatus PreHandleGestureEvent(
aura::Window* target,
aura::GestureEvent* event) OVERRIDE;
// aura::FocusChangeObserver overrides:
virtual void OnWindowFocused(aura::Window* window) OVERRIDE;
// aura::RootWindowObserver overrides:
virtual void OnRootWindowResized(const aura::RootWindow* root,
const gfx::Size& old_size) OVERRIDE;
// ui::ImplicitAnimationObserver overrides:
virtual void OnImplicitAnimationsCompleted() OVERRIDE;
// views::Widget::Observer overrides:
virtual void OnWidgetClosing(views::Widget* widget) OVERRIDE;
// ShellObserver overrides:
virtual void OnShelfAlignmentChanged() OVERRIDE;
// LauncherIconObserver overrides:
virtual void OnLauncherIconPositionsChanged() OVERRIDE;
scoped_ptr<app_list::PaginationModel> pagination_model_;
// Whether we should show or hide app list widget.
bool is_visible_;
// The AppListView this class manages, owned by its widget.
app_list::AppListView* view_;
DISALLOW_COPY_AND_ASSIGN(AppListController);
};
} // namespace internal
} // namespace ash
#endif // ASH_WM_APP_LIST_CONTROLLER_H_