| // 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_WINDOW_SELECTOR_H_ |
| #define ASH_WM_WINDOW_SELECTOR_H_ |
| |
| #include <vector> |
| |
| #include "base/compiler_specific.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/scoped_vector.h" |
| #include "ui/aura/window_observer.h" |
| #include "ui/base/events/event_handler.h" |
| #include "ui/gfx/transform.h" |
| |
| namespace aura { |
| class RootWindow; |
| } |
| |
| namespace ui { |
| class LocatedEvent; |
| } |
| |
| namespace views { |
| class Widget; |
| } |
| |
| namespace ash { |
| |
| class WindowSelectorDelegate; |
| class WindowSelectorWindow; |
| |
| // The WindowSelector shows a grid of all of your windows and allows selecting |
| // a window by clicking or tapping on it (OVERVIEW mode) or by alt-tabbing to |
| // it (CYCLE mode). |
| class WindowSelector : public ui::EventHandler, |
| public aura::WindowObserver { |
| 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); |
| |
| // Select the current window. |
| void SelectWindow(); |
| |
| Mode mode() { return mode_; } |
| |
| // ui::EventHandler: |
| virtual void OnEvent(ui::Event* event) OVERRIDE; |
| virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE; |
| virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE; |
| |
| // aura::WindowObserver: |
| virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE; |
| |
| private: |
| // Returns the target of |event| or NULL if the event is not targeted at |
| // any of the windows in the selector. |
| WindowSelectorWindow* GetEventTarget(ui::LocatedEvent* event); |
| |
| // Handles a selection event for |target|. |
| void HandleSelectionEvent(WindowSelectorWindow* target); |
| |
| // Position all of the windows based on the current selection mode. |
| void PositionWindows(); |
| // Position all of the windows from |root_window| on |root_window|. |
| void PositionWindowsFromRoot(aura::RootWindow* root_window); |
| // Position all of the |windows| to fit on the |root_window|. |
| void PositionWindowsOnRoot(aura::RootWindow* root_window, |
| const std::vector<WindowSelectorWindow*>& windows); |
| |
| void InitializeSelectionWidget(); |
| |
| // Updates the selection widget's location to the currently selected window. |
| // If |animate| the transition to the new location is animated. |
| void UpdateSelectionLocation(bool animate); |
| |
| // The collection of windows in the overview wrapped by a helper class which |
| // restores their state and helps transform them to other root windows. |
| ScopedVector<WindowSelectorWindow> windows_; |
| |
| // The window selection mode. |
| Mode mode_; |
| |
| // 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_; |
| |
| // Widget indicating which window is currently selected. |
| scoped_ptr<views::Widget> selection_widget_; |
| |
| // In CYCLE mode, the root window in which selection is taking place. |
| // NULL otherwise. |
| aura::RootWindow* selection_root_; |
| |
| DISALLOW_COPY_AND_ASSIGN(WindowSelector); |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_WM_WINDOW_SELECTOR_H_ |