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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 CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_FETCHER_H_
#define CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_FETCHER_H_
#pragma once
#include "base/memory/scoped_vector.h"
#include "base/string16.h"
#include "ui/gfx/native_widget_types.h"
class GURL;
class Profile;
class TemplateURL;
class TemplateURLFetcherCallbacks;
// TemplateURLFetcher is responsible for downloading OpenSearch description
// documents, creating a TemplateURL from the OSDD, and adding the TemplateURL
// to the TemplateURLService. Downloading is done in the background.
//
class TemplateURLFetcher {
public:
enum ProviderType {
AUTODETECTED_PROVIDER,
EXPLICIT_PROVIDER, // Supplied by Javascript.
EXPLICIT_DEFAULT_PROVIDER // Supplied by Javascript as default provider.
};
// Creates a TemplateURLFetcher with the specified Profile.
explicit TemplateURLFetcher(Profile* profile);
~TemplateURLFetcher();
// If TemplateURLFetcher is not already downloading the OSDD for osdd_url,
// it is downloaded. If successful and the result can be parsed, a TemplateURL
// is added to the TemplateURLService. Takes ownership of |callbacks|.
void ScheduleDownload(const string16& keyword,
const GURL& osdd_url,
const GURL& favicon_url,
TemplateURLFetcherCallbacks* callbacks,
ProviderType provider_type);
// The current number of outstanding requests.
int requests_count() const { return requests_->size(); }
private:
friend class RequestDelegate;
// A RequestDelegate is created to download each OSDD. When done downloading
// RequestCompleted is invoked back on the TemplateURLFetcher.
class RequestDelegate;
Profile* profile() const { return profile_; }
// Invoked from the RequestDelegate when done downloading.
void RequestCompleted(RequestDelegate* request);
Profile* profile_;
// In progress requests.
ScopedVector<RequestDelegate> requests_;
DISALLOW_COPY_AND_ASSIGN(TemplateURLFetcher);
};
#endif // CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_FETCHER_H_
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