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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_BUTTON_H_
#define CHROME_BROWSER_CHROMEOS_STATUS_STATUS_AREA_BUTTON_H_
#pragma once
#include "base/compiler_specific.h"
#include "base/string16.h"
#include "ui/views/controls/button/menu_button.h"
#include "ui/views/controls/menu/view_menu_delegate.h"
namespace gfx {
class Font;
}
// Button to be used to represent status and allow menus to be popped up.
// Shows current button state by drawing a border around the current icon.
class StatusAreaButton : public views::MenuButton {
public:
// Different text styles for different types of backgrounds.
enum TextStyle {
WHITE_PLAIN,
GRAY_PLAIN,
WHITE_HALOED,
GRAY_EMBOSSED
};
class Delegate {
public:
// Commands to be passed to ExecuteCommand().
enum Command {
SHOW_LANGUAGE_OPTIONS,
SHOW_NETWORK_OPTIONS,
SHOW_SYSTEM_OPTIONS
};
// |command_id| can be any int, passed from the button to the delegate.
virtual bool ShouldExecuteStatusAreaCommand(
const views::View* button_view, int command_id) const = 0;
virtual void ExecuteStatusAreaCommand(
const views::View* button_view, int command_id) = 0;
// Return the button font. |font| is set to the default button font.
virtual gfx::Font GetStatusAreaFont(const gfx::Font& font) const = 0;
virtual TextStyle GetStatusAreaTextStyle() const = 0;
// Handle visibility changes (e.g. resize the status area).
virtual void ButtonVisibilityChanged(views::View* button_view) = 0;
protected:
virtual ~Delegate() {}
};
StatusAreaButton(Delegate* button_delegate,
views::ViewMenuDelegate* menu_delegate);
virtual ~StatusAreaButton() {}
virtual void PaintButton(gfx::Canvas* canvas, PaintButtonMode mode) OVERRIDE;
// Overrides TextButton's SetText to clear max text size before seting new
// text content so that the button size would fit the new text size.
virtual void SetText(const string16& text) OVERRIDE;
// views::MenuButton overrides.
virtual bool Activate() OVERRIDE;
// View overrides.
virtual gfx::Size GetPreferredSize() OVERRIDE;
virtual gfx::Insets GetInsets() const OVERRIDE;
virtual void OnThemeChanged() OVERRIDE;
virtual void SetVisible(bool visible) OVERRIDE;
virtual bool HitTest(const gfx::Point& l) const OVERRIDE;
// Sets menu_active_. Override this to perform additional actions when
// menus are activated.
virtual void SetMenuActive(bool active);
// Refresh the style used to paint this button's text. Schedules repaint.
void UpdateTextStyle();
bool menu_active() const { return menu_active_; }
protected:
Delegate* delegate() { return delegate_; }
const Delegate* delegate() const { return delegate_; }
// Subclasses should override these methods to return the correct dimensions.
virtual int icon_height();
virtual int icon_width();
// Subclasses can override this method to return more or less padding.
// The padding is added to both the left and right side.
virtual int horizontal_padding();
// Insets to use for this button.
gfx::Insets insets_;
// Controls whether or not the menu can be activated. This is independent of
// IsEnabled state, so that we can prevent the menu from appearing without
// affecting the appearance of the button.
bool menu_active_;
private:
Delegate* delegate_;
DISALLOW_COPY_AND_ASSIGN(StatusAreaButton);
};
#endif // CHROME_BROWSER_CHROMEOS_STATUS_STATUS_AREA_BUTTON_H_
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