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// Copyright (c) 2011 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 CONTENT_RENDERER_FETCHERS_IMAGE_RESOURCE_FETCHER_H_
#define CONTENT_RENDERER_FETCHERS_IMAGE_RESOURCE_FETCHER_H_
#include "base/basictypes.h"
#include "base/callback.h"
#include "base/memory/scoped_ptr.h"
#include "third_party/WebKit/public/platform/WebURLRequest.h"
#include "url/gurl.h"
class SkBitmap;
namespace blink {
class WebFrame;
class WebURLResponse;
}
namespace content {
class ResourceFetcher;
// ImageResourceFetcher handles downloading an image for a webview. Once
// downloading is done the supplied callback is notified. ImageResourceFetcher
// is used to download the favicon and images for web apps.
class ImageResourceFetcher {
public:
typedef base::Callback<void(ImageResourceFetcher*, const SkBitmap&)> Callback;
ImageResourceFetcher(const GURL& image_url,
blink::WebFrame* frame,
int id,
int image_size,
blink::WebURLRequest::RequestContext request_context,
const Callback& callback);
virtual ~ImageResourceFetcher();
// URL of the image we're downloading.
const GURL& image_url() const { return image_url_; }
// Unique identifier for the request.
int id() const { return id_; }
private:
// ResourceFetcher::Callback. Decodes the image and invokes callback_.
void OnURLFetchComplete(const blink::WebURLResponse& response,
const std::string& data);
Callback callback_;
// Unique identifier for the request.
const int id_;
// URL of the image.
const GURL image_url_;
// The size of the image. This is only a hint that is used if the image
// contains multiple sizes. A value of 0 results in using the first frame
// of the image.
const int image_size_;
// Does the actual download.
scoped_ptr<ResourceFetcher> fetcher_;
DISALLOW_COPY_AND_ASSIGN(ImageResourceFetcher);
};
} // namespace content
#endif // CONTENT_RENDERER_FETCHERS_IMAGE_RESOURCE_FETCHER_H_
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