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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_SEARCH_SUGGESTIONS_SUGGESTIONS_SOURCE_H_
#define CHROME_BROWSER_SEARCH_SUGGESTIONS_SUGGESTIONS_SOURCE_H_
#include <map>
#include <string>
#include "base/basictypes.h"
#include "base/callback.h"
#include "base/memory/weak_ptr.h"
#include "components/suggestions/proto/suggestions.pb.h"
#include "content/public/browser/url_data_source.h"
#include "url/gurl.h"
class Profile;
class SkBitmap;
namespace base {
class RefCountedMemory;
} // namespace base
namespace suggestions {
// SuggestionsSource renders a webpage to list SuggestionsService data.
class SuggestionsSource : public content::URLDataSource {
public:
explicit SuggestionsSource(Profile* profile);
// content::URLDataSource implementation.
std::string GetSource() const override;
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;
private:
~SuggestionsSource() override;
// Container for the state of a request.
struct RequestContext {
RequestContext(
const suggestions::SuggestionsProfile& suggestions_profile_in,
const content::URLDataSource::GotDataCallback& callback_in);
~RequestContext();
const suggestions::SuggestionsProfile suggestions_profile;
const content::URLDataSource::GotDataCallback callback;
std::map<GURL, std::string> base64_encoded_pngs;
};
// Callback for suggestions from SuggestionsService.
void OnSuggestionsAvailable(
const content::URLDataSource::GotDataCallback& callback,
const SuggestionsProfile& suggestions_profile);
// Callback for responses from each Thumbnail request.
void OnThumbnailAvailable(RequestContext* context, base::Closure barrier,
const GURL& url, const SkBitmap* bitmap);
// Callback for when all requests are complete. Renders the output webpage and
// passes the result to the original caller.
void OnThumbnailsFetched(RequestContext* context);
// Only used when servicing requests on the UI thread.
Profile* const profile_;
// For callbacks may be run after destruction.
base::WeakPtrFactory<SuggestionsSource> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(SuggestionsSource);
};
} // namespace suggestions
#endif // CHROME_BROWSER_SEARCH_SUGGESTIONS_SUGGESTIONS_SOURCE_H_
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