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// Copyright (c) 2006-2008 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_WEB_APP_ICON_MANAGER_H__
#define CHROME_BROWSER_WEB_APP_ICON_MANAGER_H__
#include <windows.h>
#include "base/scoped_ptr.h"
#include "chrome/browser/web_app.h"
class TabContents;
// WebAppIconManager is used by SimpleXPFrame/SimpleVistaFrame to manage the
// icons for the frame. If the current contents are a web app, then icon is
// set from the app, otherwise the icons are set to the default.
class WebAppIconManager : public WebApp::Observer {
public:
explicit WebAppIconManager(HWND parent);
~WebAppIconManager();
// Sets the contents the WebApp should come from. If the contents has a web
// app, the image comes from it, otherwise the icon for the HWND is set to
// the default chrome icon.
void SetContents(TabContents* contents);
// Enables/disables icons. If true and this WebAppIconManager was previously
// disabled, the icon is updated immediately.
void SetUpdatesEnabled(bool enabled);
private:
// Invoked when the icons of the WebApp has changed. Invokes
// UpdateIconsFromApp appropriately.
virtual void WebAppImagesChanged(WebApp* web_app);
// Updates the icons of the HWND, unless we're disabled in which case this
// does nothing.
void UpdateIconsFromApp();
// HWND the icon is updated on.
const HWND hwnd_;
// Current app, may be null.
scoped_refptr<WebApp> app_;
// Icons. These are only valid if the app doesn't have an icon.
HICON small_icon_;
HICON big_icon_;
// Are we enabled? If not, we won't update the icons of the HWND.
bool enabled_;
DISALLOW_EVIL_CONSTRUCTORS(WebAppIconManager);
};
#endif // CHROME_BROWSER_WEB_APP_ICON_MANAGER_H__
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