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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_UI_VIEWS_ASH_LAUNCHER_LAUNCHER_FAVICON_LOADER_H_
#define CHROME_BROWSER_UI_VIEWS_ASH_LAUNCHER_LAUNCHER_FAVICON_LOADER_H_
#pragma once
#include <vector>
#include "base/basictypes.h"
#include "base/callback.h"
#include "chrome/common/favicon_url.h"
#include "content/public/browser/web_contents_observer.h"
class GURL;
class SkBitmap;
namespace internal {
class FaviconBitmapHandler;
}
// LauncherFaviconLoader handles updates to the list of favicon urls and
// retrieves the appropriately sized favicon for panels in the Launcher.
class LauncherFaviconLoader : public content::WebContentsObserver {
public:
class Delegate {
public:
virtual void FaviconUpdated() = 0;
protected:
virtual ~Delegate() {}
};
LauncherFaviconLoader(Delegate* delegate,
content::WebContents* web_contents);
virtual ~LauncherFaviconLoader();
// content::WebContentsObserver overrides.
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
content::WebContents* web_contents() {
return content::WebContentsObserver::web_contents();
}
// Returns an appropriately sized favicon for the Launcher. If none are
// available will return an isNull bitmap.
SkBitmap GetFavicon() const;
private:
// Message Handlers.
void OnUpdateFaviconURL(int32 page_id,
const std::vector<FaviconURL>& candidates);
void OnDidDownloadFavicon(int id,
const GURL& image_url,
bool errored,
const SkBitmap& bitmap);
scoped_ptr<internal::FaviconBitmapHandler> favicon_handler_;
DISALLOW_COPY_AND_ASSIGN(LauncherFaviconLoader);
};
#endif // CHROME_BROWSER_UI_VIEWS_ASH_LAUNCHER_LAUNCHER_FAVICON_LOADER_H_
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