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      1 // Copyright 2014 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 #include "content/renderer/fetchers/manifest_fetcher.h"
      6 
      7 #include "base/bind.h"
      8 #include "base/logging.h"
      9 #include "content/public/renderer/resource_fetcher.h"
     10 #include "third_party/WebKit/public/platform/WebURLRequest.h"
     11 #include "third_party/WebKit/public/web/WebFrame.h"
     12 
     13 namespace content {
     14 
     15 ManifestFetcher::ManifestFetcher(const GURL& url)
     16     : completed_(false) {
     17   fetcher_.reset(ResourceFetcher::Create(url));
     18 }
     19 
     20 ManifestFetcher::~ManifestFetcher() {
     21   if (!completed_)
     22     Cancel();
     23 }
     24 
     25 void ManifestFetcher::Start(blink::WebFrame* frame, const Callback& callback) {
     26   callback_ = callback;
     27   fetcher_->Start(frame,
     28                   blink::WebURLRequest::RequestContextManifest,
     29                   blink::WebURLRequest::FrameTypeNone,
     30                   ResourceFetcher::FRAME_ASSOCIATED_LOADER,
     31                   base::Bind(&ManifestFetcher::OnLoadComplete,
     32                              base::Unretained(this)));
     33 }
     34 
     35 void ManifestFetcher::Cancel() {
     36   DCHECK(!completed_);
     37   fetcher_->Cancel();
     38 }
     39 
     40 void ManifestFetcher::OnLoadComplete(const blink::WebURLResponse& response,
     41                                      const std::string& data) {
     42   DCHECK(!completed_);
     43   completed_ = true;
     44 
     45   Callback callback = callback_;
     46   callback.Run(response, data);
     47 }
     48 
     49 } // namespace content
     50