Merge WindowOverview into WindowSelector

ash/wm/overview/window_overview.h

-// Copyright 2013 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_OVERVIEW_WINDOW_OVERVIEW_H_
-#define ASH_WM_OVERVIEW_WINDOW_OVERVIEW_H_
-
-#include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/scoped_vector.h"
-#include "base/time/time.h"
-#include "ui/aura/window_tracker.h"
-#include "ui/events/event_handler.h"
-#include "ui/gfx/display_observer.h"
-#include "ui/gfx/rect.h"
-
-namespace aura {
-class Window;
-namespace client {
-class CursorClient;
-}
-}  // namespace aura
-
-namespace ui {
-class LocatedEvent;
-}
-
-namespace views {
-class Widget;
-}
-
-namespace ash {
-
-class WindowSelector;
-class WindowSelectorItem;
-
-// The WindowOverview shows a grid of all of your windows and allows selecting
-// a window by clicking or tapping on it. It also displays a selection widget
-// used to indicate the current selection when alt-tabbing between windows.
-class WindowOverview : public ui::EventHandler,
-                       public gfx::DisplayObserver {
- public:
-  typedef ScopedVector<WindowSelectorItem> WindowSelectorItemList;
-
-  // Enters an overview mode displaying |windows| and dispatches methods
-  // on |window_selector| when a window is selected or selection is canceled.
-  // If |single_root_window| is not NULL, all windows will be positioned on the
-  // given root window.
-  WindowOverview(WindowSelector* window_selector,
-                 WindowSelectorItemList* windows);
-  virtual ~WindowOverview();
-
-  // Sets the selected window to be the window in position |index|.
-  void SetSelection(size_t index);
-
-  // Dispatched when the list of windows has changed.
-  void OnWindowsChanged();
-
-  // ui::EventHandler:
-  virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE;
-  virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE;
-  virtual void OnScrollEvent(ui::ScrollEvent* event) OVERRIDE;
-  virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE;
-
-  // gfx::DisplayObserver:
-  virtual void OnDisplayBoundsChanged(const gfx::Display& display) OVERRIDE;
-  virtual void OnDisplayAdded(const gfx::Display& display) OVERRIDE;
-  virtual void OnDisplayRemoved(const gfx::Display& display) OVERRIDE;
-
- private:
-  // Returns the target of |event| or NULL if the event is not targeted at
-  // any of the windows in the selector.
-  aura::Window* GetEventTarget(ui::LocatedEvent* event);
-
-  // Returns the top-level window selected by targeting |window| or NULL if
-  // no overview window was found for |window|.
-  aura::Window* GetTargetedWindow(aura::Window* window);
-
-  // Hide and track all hidden windows not in overview.
-  void HideAndTrackNonOverviewWindows();
-
-  // Position all of the windows based on the current selection mode.
-  void PositionWindows(bool animate);
-  // Position all of the windows from |root_window| on |root_window|.
-  void PositionWindowsFromRoot(aura::Window* root_window, bool animate);
-
-  // Creates the selection widget.
-  void InitializeSelectionWidget();
-
-  // Returns the bounds for the selection widget for the windows_ at |index|.
-  gfx::Rect GetSelectionBounds(size_t index);
-
-  // Weak pointer to the window selector which owns this class.
-  WindowSelector* window_selector_;
-
-  // A weak pointer to the collection of windows in the overview wrapped by a
-  // helper class which restores their state and helps transform them to other
-  // root windows.
-  WindowSelectorItemList* windows_;
-
-  // Widget indicating which window is currently selected.
-  scoped_ptr<views::Widget> selection_widget_;
-
-  // Index of the currently selected window. This is used to determine when the
-  // selection changes rows and use a different animation.
-  size_t selection_index_;
-
-  // The time when overview was started.
-  base::Time overview_start_time_;
-
-  // The cursor client used to lock the current cursor during overview.
-  aura::client::CursorClient* cursor_client_;
-
-  // Tracks windows which were hidden because they were not part of the
-  // overview.
-  aura::WindowTracker hidden_windows_;
-
-  DISALLOW_COPY_AND_ASSIGN(WindowOverview);
-};
-
-}  // namespace ash
-
-#endif  // ASH_WM_OVERVIEW_WINDOW_OVERVIEW_H_