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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_STATUS_ICONS_STATUS_ICON_H_
#define CHROME_BROWSER_STATUS_ICONS_STATUS_ICON_H_
#pragma once
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/observer_list.h"
#include "base/string16.h"
class SkBitmap;
namespace ui {
class MenuModel;
}
class StatusIconObserver;
class StatusIcon {
public:
StatusIcon();
virtual ~StatusIcon();
// Sets the image associated with this status icon.
virtual void SetImage(const SkBitmap& image) = 0;
// Sets the image associated with this status icon when pressed.
virtual void SetPressedImage(const SkBitmap& image) = 0;
// Sets the hover text for this status icon.
virtual void SetToolTip(const string16& tool_tip) = 0;
// Displays a notification balloon with the specified contents.
// Depending on the platform it might not appear by the icon tray.
virtual void DisplayBalloon(const SkBitmap& icon,
const string16& title,
const string16& contents) = 0;
// Set the context menu for this icon. The icon takes ownership of the passed
// context menu. Passing NULL results in no menu at all.
void SetContextMenu(ui::MenuModel* menu);
// Adds/Removes an observer for clicks on the status icon. If an observer is
// registered, then left clicks on the status icon will result in the observer
// being called, otherwise, both left and right clicks will display the
// context menu (if any).
void AddObserver(StatusIconObserver* observer);
void RemoveObserver(StatusIconObserver* observer);
// Returns true if there are registered click observers.
bool HasObservers() const;
// Dispatches a click event to the observers.
void DispatchClickEvent();
protected:
// Invoked after a call to SetContextMenu() to let the platform-specific
// subclass update the native context menu based on the new model. If NULL is
// passed, subclass should destroy the native context menu.
virtual void UpdatePlatformContextMenu(ui::MenuModel* model) = 0;
private:
ObserverList<StatusIconObserver> observers_;
// Context menu, if any.
scoped_ptr<ui::MenuModel> context_menu_contents_;
DISALLOW_COPY_AND_ASSIGN(StatusIcon);
};
#endif // CHROME_BROWSER_STATUS_ICONS_STATUS_ICON_H_
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