1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_PUBLIC_RENDERER_RESOURCE_FETCHER_H_ 6 #define CONTENT_PUBLIC_RENDERER_RESOURCE_FETCHER_H_ 7 8 #include <string> 9 10 #include "base/callback.h" 11 #include "content/common/content_export.h" 12 #include "third_party/WebKit/public/platform/WebURLRequest.h" 13 14 class GURL; 15 16 namespace base { 17 class TimeDelta; 18 } 19 20 namespace blink { 21 class WebFrame; 22 class WebURLResponse; 23 } 24 25 namespace content { 26 27 // Interface to download resources asynchronously. 28 class CONTENT_EXPORT ResourceFetcher { 29 public: ~ResourceFetcher()30 virtual ~ResourceFetcher() {} 31 32 // This will be called asynchronously after the URL has been fetched, 33 // successfully or not. If there is a failure, response and data will both be 34 // empty. |response| and |data| are both valid until the URLFetcher instance 35 // is destroyed. 36 typedef base::Callback<void(const blink::WebURLResponse& response, 37 const std::string& data)> Callback; 38 39 // Creates a ResourceFetcher and starts fetching the specified resource. 40 // Caller takes ownership of the returned object. Deleting the 41 // ResourceFetcher will cancel the request, and the callback will never be 42 // run. 43 static ResourceFetcher* Create(const GURL& url, 44 blink::WebFrame* frame, 45 blink::WebURLRequest::TargetType target_type, 46 const Callback& callback); 47 48 // Sets how long to wait for the server to reply. By default, there is no 49 // timeout. 50 virtual void SetTimeout(const base::TimeDelta& timeout) = 0; 51 }; 52 53 } // namespace content 54 55 #endif // CONTENT_PUBLIC_RENDERER_RESOURCE_FETCHER_H_ 56