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// Copyright (c) 2012 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 FOCUS_CYCLER_H_
#define FOCUS_CYCLER_H_
#include <vector>
#include "ash/ash_export.h"
#include "base/basictypes.h"
#include "base/compiler_specific.h"
namespace views {
class Widget;
} // namespace views
namespace ash {
namespace internal {
// This class handles moving focus between a set of widgets and the main browser
// window.
class ASH_EXPORT FocusCycler {
public:
enum Direction {
FORWARD,
BACKWARD
};
FocusCycler();
~FocusCycler();
// Returns the widget the FocusCycler is attempting to activate or NULL if
// FocusCycler is not activating any widgets.
const views::Widget* widget_activating() const { return widget_activating_; }
// Add a widget to the focus cycle. The widget needs to have an
// AccessiblePaneView as the content view.
void AddWidget(views::Widget* widget);
// Move focus to the next widget.
void RotateFocus(Direction direction);
// Moves focus the specified widget. Returns true if the widget was activated.
bool FocusWidget(views::Widget* widget);
private:
std::vector<views::Widget*> widgets_;
// See description above getter.
views::Widget* widget_activating_;
DISALLOW_COPY_AND_ASSIGN(FocusCycler);
};
} // namespace internal
} // namespace ash
#endif // FOCUS_CYCLER_H_
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