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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_SEARCH_ENGINES_UTIL_H_
#define CHROME_BROWSER_SEARCH_ENGINES_UTIL_H_
// This file contains utility functions for search engine functionality.
#include <set>
#include <string>
#include <vector>
#include "base/memory/scoped_ptr.h"
#include "base/string16.h"
#include "chrome/browser/search_engines/template_url_service.h"
class Profile;
class TemplateURL;
class WDTypedResult;
class WebDataService;
// Returns the short name of the default search engine, or the empty string if
// none is set. |profile| may be NULL.
string16 GetDefaultSearchEngineName(Profile* profile);
// Processes the results of WebDataService::GetKeywords, combining it with
// prepopulated search providers to result in:
// * a set of template_urls (search providers). The caller owns the
// TemplateURL* returned in template_urls.
// * the default search provider (and if *default_search_provider is not NULL,
// it is contained in template_urls).
// * whether there is a new resource keyword version (and the value).
// |*new_resource_keyword_version| is set to 0 if no new value. Otherwise,
// it is the new value.
// Only pass in a non-NULL value for service if the WebDataService should be
// updated. If |removed_keyword_guids| is not NULL, any TemplateURLs removed
// from the keyword table in the WebDataService will have their Sync GUIDs
// added to it.
void GetSearchProvidersUsingKeywordResult(
const WDTypedResult& result,
WebDataService* service,
Profile* profile,
TemplateURLService::TemplateURLVector* template_urls,
TemplateURL** default_search_provider,
int* new_resource_keyword_version,
std::set<std::string>* removed_keyword_guids);
// Due to a bug, the |input_encodings| field of TemplateURLData could have
// contained duplicate entries. This removes those entries and returns whether
// any were found.
bool DeDupeEncodings(std::vector<std::string>* encodings);
// Removes (and deletes) TemplateURLs from |template_urls| and |service| if they
// have duplicate prepopulate ids. If |removed_keyword_guids| is not NULL, the
// Sync GUID of each item removed from the DB will be added to it. This is a
// helper used by GetSearchProvidersUsingKeywordResult(), but is declared here
// so it's accessible by unittests.
void RemoveDuplicatePrepopulateIDs(
WebDataService* service,
const ScopedVector<TemplateURL>& prepopulated_urls,
TemplateURL* default_search_provider,
TemplateURLService::TemplateURLVector* template_urls,
std::set<std::string>* removed_keyword_guids);
#endif // CHROME_BROWSER_SEARCH_ENGINES_UTIL_H_
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