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      1 /*
      2  * Copyright (C) 2009 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef WebURLLoaderClient_h
     32 #define WebURLLoaderClient_h
     33 
     34 namespace blink {
     35 
     36 class WebURLLoader;
     37 class WebURLRequest;
     38 class WebURLResponse;
     39 struct WebURLError;
     40 
     41 class WebURLLoaderClient {
     42 public:
     43     // Called when following a redirect. |newRequest| contains the request
     44     // generated by the redirect. The client may modify |newRequest|.
     45     virtual void willSendRequest(
     46         WebURLLoader*, WebURLRequest& newRequest, const WebURLResponse& redirectResponse) { }
     47 
     48     // Called to report upload progress. The bytes reported correspond to
     49     // the HTTP message body.
     50     virtual void didSendData(
     51         WebURLLoader*, unsigned long long bytesSent, unsigned long long totalBytesToBeSent) { }
     52 
     53     // Called when response headers are received.
     54     virtual void didReceiveResponse(WebURLLoader*, const WebURLResponse&) { }
     55 
     56     // Called when a chunk of response data is downloaded. This is only called
     57     // if WebURLRequest's downloadToFile flag was set to true.
     58     virtual void didDownloadData(WebURLLoader*, int dataLength, int encodedDataLength) { }
     59 
     60     // Called when a chunk of response data is received.
     61     virtual void didReceiveData(WebURLLoader*, const char* data, int dataLength, int encodedDataLength) { }
     62 
     63     // Called when a chunk of renderer-generated metadata is received from the cache.
     64     virtual void didReceiveCachedMetadata(WebURLLoader*, const char* data, int dataLength) { }
     65 
     66     // Called when the load completes successfully.
     67     virtual void didFinishLoading(WebURLLoader*, double finishTime) { }
     68 
     69     // Called when the load completes with an error.
     70     virtual void didFail(WebURLLoader*, const WebURLError&) { }
     71 
     72 protected:
     73     virtual ~WebURLLoaderClient() { }
     74 };
     75 
     76 } // namespace blink
     77 
     78 #endif
     79