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 namespace internal { 21 22 // This class handles moving focus between a set of widgets and the main browser 23 // window. 24 class ASH_EXPORT FocusCycler { 25 public: 26 enum Direction { 27 FORWARD, 28 BACKWARD 29 }; 30 31 FocusCycler(); 32 ~FocusCycler(); 33 34 // Returns the widget the FocusCycler is attempting to activate or NULL if 35 // FocusCycler is not activating any widgets. 36 const views::Widget* widget_activating() const { return widget_activating_; } 37 38 // Add a widget to the focus cycle. The widget needs to have an 39 // AccessiblePaneView as the content view. 40 void AddWidget(views::Widget* widget); 41 42 // Move focus to the next widget. 43 void RotateFocus(Direction direction); 44 45 // Moves focus the specified widget. Returns true if the widget was activated. 46 bool FocusWidget(views::Widget* widget); 47 48 private: 49 std::vector<views::Widget*> widgets_; 50 51 // See description above getter. 52 views::Widget* widget_activating_; 53 54 DISALLOW_COPY_AND_ASSIGN(FocusCycler); 55 }; 56 57 } // namespace internal 58 59 } // namespace ash 60 61 #endif // FOCUS_CYCLER_H_ 62
