ios/chrome/browser/search_engines/search_engine_observer_bridge.h

// Copyright 2017 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 IOS_CHROME_BROWSER_SEARCH_ENGINES_SEARCH_ENGINE_OBSERVER_BRIDGE_H_
#define IOS_CHROME_BROWSER_SEARCH_ENGINES_SEARCH_ENGINE_OBSERVER_BRIDGE_H_

#import <Foundation/Foundation.h>

#include "components/search_engines/template_url_service.h"
#include "components/search_engines/template_url_service_observer.h"

// Objective-C equivalent of the TemplateURLServiceObserver class.
@protocol SearchEngineObserving

// Called when the search engine is changed.
- (void)searchEngineChanged;

@end

// Observer used to reload the Search Engine collection view once the
// TemplateURLService changes, either on first load or due to a
// policy change.
class SearchEngineObserverBridge : public TemplateURLServiceObserver {
 public:
  SearchEngineObserverBridge(id<SearchEngineObserving> owner,
                             TemplateURLService* urlService);
  ~SearchEngineObserverBridge() override;
  void OnTemplateURLServiceChanged() override;

 private:
  __weak id<SearchEngineObserving> owner_;
  TemplateURLService* templateURLService_;  // weak
};

#endif  // IOS_CHROME_BROWSER_SEARCH_ENGINES_SEARCH_ENGINE_OBSERVER_BRIDGE_H_