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-rw-r--r--chromium/ash/wm/overview/window_selector.h145
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diff --git a/chromium/ash/wm/overview/window_selector.h b/chromium/ash/wm/overview/window_selector.h
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--- a/chromium/ash/wm/overview/window_selector.h
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-// 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_SELECTOR_H_
-#define ASH_WM_OVERVIEW_WINDOW_SELECTOR_H_
-
-#include <set>
-#include <vector>
-
-#include "ash/ash_export.h"
-#include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/scoped_vector.h"
-#include "base/timer/timer.h"
-#include "ui/aura/client/activation_change_observer.h"
-#include "ui/aura/window_observer.h"
-
-namespace aura {
-class RootWindow;
-}
-
-namespace ui {
-class EventHandler;
-}
-
-namespace ash {
-
-namespace internal {
-class WindowSelectorTest;
-}
-
-class ScopedShowWindow;
-class WindowOverview;
-class WindowSelectorDelegate;
-class WindowSelectorItem;
-
-// The WindowSelector allows selecting a window by alt-tabbing (CYCLE mode) or
-// by clicking or tapping on it (OVERVIEW mode). A WindowOverview will be shown
-// in OVERVIEW mode or if the user lingers on a window while alt tabbing.
-class ASH_EXPORT WindowSelector
- : public aura::WindowObserver,
- public aura::client::ActivationChangeObserver {
- public:
- enum Direction {
- FORWARD,
- BACKWARD
- };
- enum Mode {
- CYCLE,
- OVERVIEW
- };
-
- typedef std::vector<aura::Window*> WindowList;
-
- WindowSelector(const WindowList& windows,
- Mode mode,
- WindowSelectorDelegate* delegate);
- virtual ~WindowSelector();
-
- // Step to the next window in |direction|.
- void Step(Direction direction);
-
- // Choose the currently selected window.
- void SelectWindow();
-
- // Choose |window| from the available windows to select.
- void SelectWindow(aura::Window* window);
-
- // Cancels window selection.
- void CancelSelection();
-
- Mode mode() { return mode_; }
-
- // aura::WindowObserver:
- virtual void OnWindowAdded(aura::Window* new_window) OVERRIDE;
- virtual void OnWindowBoundsChanged(aura::Window* window,
- const gfx::Rect& old_bounds,
- const gfx::Rect& new_bounds) OVERRIDE;
- virtual void OnWindowDestroying(aura::Window* window) OVERRIDE;
-
- // Overridden from aura::client::ActivationChangeObserver:
- virtual void OnWindowActivated(aura::Window* gained_active,
- aura::Window* lost_active) OVERRIDE;
- virtual void OnAttemptToReactivateWindow(
- aura::Window* request_active,
- aura::Window* actual_active) OVERRIDE;
-
- private:
- friend class internal::WindowSelectorTest;
-
- // Begins positioning windows such that all windows are visible on the screen.
- void StartOverview();
-
- // Resets the stored window from RemoveFocusAndSetRestoreWindow to NULL. If
- // |focus|, restores focus to the stored window.
- void ResetFocusRestoreWindow(bool focus);
-
- // The collection of items in the overview wrapped by a helper class which
- // restores their state and helps transform them to other root windows.
- ScopedVector<WindowSelectorItem> windows_;
-
- // Tracks observed windows.
- std::set<aura::Window*> observed_windows_;
-
- // The window selection mode.
- Mode mode_;
-
- // An event handler listening for the release of the alt key during alt-tab
- // cycling.
- scoped_ptr<ui::EventHandler> event_handler_;
-
- // The currently selected window being shown (temporarily brought to the front
- // of the stacking order and made visible).
- scoped_ptr<ScopedShowWindow> showing_window_;
-
- bool timer_enabled_;
- base::DelayTimer<WindowSelector> start_overview_timer_;
- scoped_ptr<WindowOverview> window_overview_;
-
- // The time when window cycling was started.
- base::Time cycle_start_time_;
-
- // Weak pointer to the selector delegate which will be called when a
- // selection is made.
- WindowSelectorDelegate* delegate_;
-
- // Index of the currently selected window if the mode is CYCLE.
- size_t selected_window_;
-
- // A weak pointer to the window which was focused on beginning window
- // selection. If window selection is canceled the focus should be restored to
- // this window.
- aura::Window* restore_focus_window_;
-
- // True when performing operations that may cause window activations. This is
- // used to prevent handling the resulting expected activation.
- bool ignore_activations_;
-
- DISALLOW_COPY_AND_ASSIGN(WindowSelector);
-};
-
-} // namespace ash
-
-#endif // ASH_WM_OVERVIEW_WINDOW_SELECTOR_H_