1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef FOCUS_CYCLER_H_ 6 #define FOCUS_CYCLER_H_ 7 8 #include <vector> 9 10 #include "ash/ash_export.h" 11 #include "base/basictypes.h" 12 #include "base/compiler_specific.h" 13 14 namespace views { 15 class Widget; 16 } // namespace views 17 18 namespace ash { 19 20 // This class handles moving focus between a set of widgets and the main browser 21 // window. 22 class ASH_EXPORT FocusCycler { 23 public: 24 enum Direction { 25 FORWARD, 26 BACKWARD 27 }; 28 29 FocusCycler(); 30 ~FocusCycler(); 31 32 // Returns the widget the FocusCycler is attempting to activate or NULL if 33 // FocusCycler is not activating any widgets. 34 const views::Widget* widget_activating() const { return widget_activating_; } 35 36 // Add a widget to the focus cycle. The widget needs to have an 37 // AccessiblePaneView as the content view. 38 void AddWidget(views::Widget* widget); 39 40 // Move focus to the next widget. 41 void RotateFocus(Direction direction); 42 43 // Moves focus the specified widget. Returns true if the widget was activated. 44 bool FocusWidget(views::Widget* widget); 45 46 private: 47 std::vector<views::Widget*> widgets_; 48 49 // See description above getter. 50 views::Widget* widget_activating_; 51 52 DISALLOW_COPY_AND_ASSIGN(FocusCycler); 53 }; 54 55 } // namespace ash 56 57 #endif // FOCUS_CYCLER_H_ 58
