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// Copyright 2014 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_THUMBNAILS_THUMBNAIL_LIST_SOURCE_H_
#define CHROME_BROWSER_THUMBNAILS_THUMBNAIL_LIST_SOURCE_H_
#include <string>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "components/history/core/browser/history_types.h"
#include "content/public/browser/url_data_source.h"
class Profile;
namespace base {
class RefCountedMemory;
}
namespace history {
class TopSites;
}
namespace thumbnails {
class ThumbnailService;
}
// ThumbnailListSource renders a webpage to list all thumbnails stored in
// TopSites, along with all associated URLs. The thumbnail images are embedded
// into the HTML via Base64, so we can easily produce a dump of TopSites and
// the thumbnails it stores.
class ThumbnailListSource : public content::URLDataSource {
public:
explicit ThumbnailListSource(Profile* profile);
// content::URLDataSource implementation.
std::string GetSource() const override;
// Called on the IO thread.
void StartDataRequest(
const std::string& path,
int render_process_id,
int render_frame_id,
const content::URLDataSource::GotDataCallback& callback) override;
std::string GetMimeType(const std::string& path) const override;
base::MessageLoop* MessageLoopForRequestPath(
const std::string& path) const override;
bool ShouldServiceRequest(const net::URLRequest* request) const override;
bool ShouldReplaceExistingSource() const override;
private:
~ThumbnailListSource() override;
// Called on the IO thread.
void OnMostVisitedURLsAvailable(
const content::URLDataSource::GotDataCallback& callback,
const history::MostVisitedURLList& mvurl_list);
// ThumbnailService.
scoped_refptr<thumbnails::ThumbnailService> thumbnail_service_;
scoped_refptr<history::TopSites> top_sites_;
// For callbacks may be run after destruction.
base::WeakPtrFactory<ThumbnailListSource> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(ThumbnailListSource);
};
#endif // CHROME_BROWSER_THUMBNAILS_THUMBNAIL_LIST_SOURCE_H_
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