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// Copyright (c) 2012 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.
#include "content/renderer/fetchers/resource_fetcher_impl.h"
#include "base/logging.h"
#include "base/time/time.h"
#include "third_party/WebKit/public/platform/Platform.h"
#include "third_party/WebKit/public/platform/WebURL.h"
#include "third_party/WebKit/public/platform/WebURLError.h"
#include "third_party/WebKit/public/platform/WebURLLoader.h"
#include "third_party/WebKit/public/platform/WebURLRequest.h"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebFrame.h"
#include "third_party/WebKit/public/web/WebKit.h"
using base::TimeDelta;
using blink::WebFrame;
using blink::WebURLError;
using blink::WebURLLoader;
using blink::WebURLRequest;
using blink::WebURLResponse;
namespace content {
// static
ResourceFetcher* ResourceFetcher::Create(
const GURL& url, WebFrame* frame, WebURLRequest::TargetType target_type,
const Callback& callback) {
return new ResourceFetcherImpl(url, frame, target_type, callback);
}
ResourceFetcherImpl::ResourceFetcherImpl(const GURL& url, WebFrame* frame,
WebURLRequest::TargetType target_type,
const Callback& callback)
: completed_(false),
callback_(callback) {
// Can't do anything without a frame. However, delegate can be NULL (so we
// can do a http request and ignore the results).
DCHECK(frame);
Start(url, frame, target_type);
}
ResourceFetcherImpl::~ResourceFetcherImpl() {
if (!completed_ && loader_)
loader_->cancel();
}
void ResourceFetcherImpl::SetTimeout(const base::TimeDelta& timeout) {
DCHECK(loader_);
DCHECK(!completed_);
timeout_timer_.Start(FROM_HERE, timeout, this,
&ResourceFetcherImpl::TimeoutFired);
}
void ResourceFetcherImpl::Start(const GURL& url, WebFrame* frame,
WebURLRequest::TargetType target_type) {
WebURLRequest request(url);
request.setTargetType(target_type);
request.setFirstPartyForCookies(frame->document().firstPartyForCookies());
frame->dispatchWillSendRequest(request);
loader_.reset(blink::Platform::current()->createURLLoader());
loader_->loadAsynchronously(request, this);
}
void ResourceFetcherImpl::RunCallback(const WebURLResponse& response,
const std::string& data) {
completed_ = true;
timeout_timer_.Stop();
if (callback_.is_null())
return;
// Take a reference to the callback as running the callback may lead to our
// destruction.
Callback callback = callback_;
callback.Run(response, data);
}
void ResourceFetcherImpl::TimeoutFired() {
DCHECK(!completed_);
loader_->cancel();
RunCallback(WebURLResponse(), std::string());
}
/////////////////////////////////////////////////////////////////////////////
// WebURLLoaderClient methods
void ResourceFetcherImpl::willSendRequest(
WebURLLoader* loader, WebURLRequest& new_request,
const WebURLResponse& redirect_response) {
}
void ResourceFetcherImpl::didSendData(
WebURLLoader* loader, unsigned long long bytes_sent,
unsigned long long total_bytes_to_be_sent) {
}
void ResourceFetcherImpl::didReceiveResponse(
WebURLLoader* loader, const WebURLResponse& response) {
DCHECK(!completed_);
response_ = response;
}
void ResourceFetcherImpl::didReceiveData(
WebURLLoader* loader, const char* data, int data_length,
int encoded_data_length) {
DCHECK(!completed_);
DCHECK(data_length > 0);
data_.append(data, data_length);
}
void ResourceFetcherImpl::didReceiveCachedMetadata(
WebURLLoader* loader, const char* data, int data_length) {
DCHECK(!completed_);
DCHECK(data_length > 0);
metadata_.assign(data, data_length);
}
void ResourceFetcherImpl::didFinishLoading(
WebURLLoader* loader, double finishTime) {
DCHECK(!completed_);
RunCallback(response_, data_);
}
void ResourceFetcherImpl::didFail(WebURLLoader* loader,
const WebURLError& error) {
DCHECK(!completed_);
// Go ahead and tell our delegate that we're done.
RunCallback(WebURLResponse(), std::string());
}
} // namespace content
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