content/renderer/fetchers/manifest_fetcher.cc

   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