| // Copyright 2014 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 CONTENT_RENDERER_FETCHERS_MANIFEST_FETCHER_H_ |
| #define CONTENT_RENDERER_FETCHERS_MANIFEST_FETCHER_H_ |
| |
| #include <memory> |
| #include <string> |
| |
| #include "base/callback.h" |
| #include "base/macros.h" |
| #include "content/common/content_export.h" |
| #include "third_party/blink/public/platform/web_url_response.h" |
| |
| class GURL; |
| |
| namespace blink { |
| class WebLocalFrame; |
| } |
| |
| namespace content { |
| |
| class AssociatedResourceFetcher; |
| |
| // Helper class to download a Web Manifest. When an instance is created, the |
| // caller need to call Start() and wait for the passed callback to be executed. |
| // If the fetch fails, the callback will be called with two empty objects. |
| class CONTENT_EXPORT ManifestFetcher { |
| public: |
| // This will be called asynchronously after the URL has been fetched, |
| // successfully or not. If there is a failure, response and data will both be |
| // empty. |response| and |data| are both valid until the URLFetcher instance |
| // is destroyed. |
| typedef base::Callback<void(const blink::WebURLResponse& response, |
| const std::string& data)> Callback; |
| |
| explicit ManifestFetcher(const GURL& url); |
| virtual ~ManifestFetcher(); |
| |
| void Start(blink::WebLocalFrame* frame, |
| bool use_credentials, |
| const Callback& callback); |
| void Cancel(); |
| |
| private: |
| void OnLoadComplete(const blink::WebURLResponse& response, |
| const std::string& data); |
| |
| bool completed_; |
| Callback callback_; |
| std::unique_ptr<AssociatedResourceFetcher> fetcher_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ManifestFetcher); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_RENDERER_FETCHERS_MANIFEST_FETCHER_H_ |