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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 CHROME_BROWSER_CHROMEOS_STATUS_STATUS_AREA_VIEW_H_
#define CHROME_BROWSER_CHROMEOS_STATUS_STATUS_AREA_VIEW_H_
#pragma once
#include <list>
#include "base/basictypes.h"
#include "base/callback.h"
#include "chrome/browser/chromeos/status/status_area_button.h"
#include "ui/views/accessible_pane_view.h"
#include "ui/views/view.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_delegate.h"
// This class is used to wrap the small informative widgets in the upper-right
// of the window title bar. It is used on ChromeOS only.
class StatusAreaView : public views::AccessiblePaneView,
public views::Widget::Observer,
public base::SupportsWeakPtr<StatusAreaView>,
public views::WidgetDelegate {
public:
enum ButtonBorder {
NO_BORDER,
HAS_BORDER
};
StatusAreaView();
virtual ~StatusAreaView();
void AddButton(StatusAreaButton* button, ButtonBorder border);
void RemoveButton(StatusAreaButton* button);
void MakeButtonsActive(bool active);
void UpdateButtonVisibility();
// Refresh the style used to paint all buttons' text. Schedules repaint.
void UpdateButtonTextStyle();
// Takes focus and transfers it to the first (last if |reverse| is true).
// After focus has traversed through all elements, clears focus and calls
// |return_focus_cb(reverse)| from the message loop.
typedef base::Callback<void(bool)> ReturnFocusCallback;
void TakeFocus(bool reverse,
const ReturnFocusCallback& return_focus_cb);
// views::View* overrides.
virtual gfx::Size GetPreferredSize() OVERRIDE;
virtual void Layout() OVERRIDE;
virtual void PreferredSizeChanged() OVERRIDE;
virtual void ChildPreferredSizeChanged(views::View* child) OVERRIDE;
// views::WidgetDelegate overrides:
virtual bool CanActivate() const OVERRIDE;
virtual void DeleteDelegate() OVERRIDE;
virtual views::Widget* GetWidget() OVERRIDE;
virtual const views::Widget* GetWidget() const OVERRIDE;
private:
// Overridden from views::FocusChangeListener:
virtual void OnDidChangeFocus(views::View* focused_before,
views::View* focused_now) OVERRIDE;
// Overriden from views::Widget::Observer:
virtual void OnWidgetActivationChanged(views::Widget* widget,
bool active) OVERRIDE;
// Overriden from views::AccessiblePaneView:
virtual bool AcceleratorPressed(const ui::Accelerator& accelerator)
OVERRIDE;
StatusAreaButton::Delegate* delegate_;
// True if focus needs to be returned via |return_focus_cb_| when it wraps.
bool need_return_focus_;
// True if focus return should be skipped for next focus change.
bool skip_next_focus_return_;
ReturnFocusCallback return_focus_cb_;
std::list<StatusAreaButton*> buttons_;
// Clears focus and calls |return_focus_cb_|.
void ReturnFocus(bool reverse);
// Clears focus (called when widget is deactivated).
void ClearFocus();
DISALLOW_COPY_AND_ASSIGN(StatusAreaView);
};
#endif // CHROME_BROWSER_CHROMEOS_STATUS_STATUS_AREA_VIEW_H_
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