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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_READING_LIST_IOS_FAVICON_WEB_STATE_DISPATCHER_H_
#define COMPONENTS_READING_LIST_IOS_FAVICON_WEB_STATE_DISPATCHER_H_
namespace web {
class WebState;
}
namespace reading_list {
// Dispatcher for WebState having a Favicon Driver, with BookmarkModel and
// HistoryService attached, as observer. After a WebState is returned, the
// dispatcher keeps it alive long enough for it to download the favicons.
class FaviconWebStateDispatcher {
public:
FaviconWebStateDispatcher() = default;
FaviconWebStateDispatcher(const FaviconWebStateDispatcher&) = delete;
FaviconWebStateDispatcher& operator=(const FaviconWebStateDispatcher&) =
delete;
virtual ~FaviconWebStateDispatcher() = default;
// Returns a WebState with a Favicon Driver attached.
virtual std::unique_ptr<web::WebState> RequestWebState() = 0;
// Called to return a WebState. The WebState should not be used after being
// returned.
virtual void ReturnWebState(std::unique_ptr<web::WebState> web_state) = 0;
// Releases all the WebState currently retained for favicon fetching.
virtual void ReleaseAll() = 0;
};
} // namespace reading_list
#endif // COMPONENTS_READING_LIST_IOS_FAVICON_WEB_STATE_DISPATCHER_H_
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