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// 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_WEB_VIEW_INTERNAL_TRANSLATE_WEB_VIEW_TRANSLATE_SERVICE_H_
#define IOS_WEB_VIEW_INTERNAL_TRANSLATE_WEB_VIEW_TRANSLATE_SERVICE_H_
#include "base/macros.h"
#include "base/memory/ptr_util.h"
#include "base/no_destructor.h"
#include "components/web_resource/resource_request_allowed_notifier.h"
namespace ios_web_view {
// Singleton managing the resources required for Translate.
class WebViewTranslateService {
public:
static WebViewTranslateService* GetInstance();
// Must be called before the Translate feature can be used.
void Initialize();
// Must be called to shut down the Translate feature.
void Shutdown();
private:
// Manages enabling translate requests only when resource requests are
// allowed.
// TODO(crbug.com/728776): Merge TranslateRequestsAllowedListener and
// WebViewTranslateService. They currently must be separate classes because
// the destructor of web_resource::ResourceRequestAllowedNotifier::Observer is
// not virtual.
class TranslateRequestsAllowedListener
: public web_resource::ResourceRequestAllowedNotifier::Observer {
public:
TranslateRequestsAllowedListener();
~TranslateRequestsAllowedListener() override;
// ResourceRequestAllowedNotifier::Observer methods.
void OnResourceRequestsAllowed() override;
private:
// Notifier class to know if it's allowed to make network resource requests.
web_resource::ResourceRequestAllowedNotifier
resource_request_allowed_notifier_;
DISALLOW_COPY_AND_ASSIGN(TranslateRequestsAllowedListener);
};
WebViewTranslateService();
~WebViewTranslateService();
friend class base::NoDestructor<WebViewTranslateService>;
// Listener which manages when translate requests can occur.
TranslateRequestsAllowedListener translate_requests_allowed_listener_;
DISALLOW_COPY_AND_ASSIGN(WebViewTranslateService);
};
} // namespace ios_web_view
#endif // IOS_WEB_VIEW_INTERNAL_TRANSLATE_WEB_VIEW_TRANSLATE_SERVICE_H_