1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
// Copyright (c) 2011 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 "webkit/glue/resource_fetcher.h"
#include "base/logging.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebKitClient.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebURLError.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebURLLoader.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebURLRequest.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebURL.h"
using base::TimeDelta;
using WebKit::WebFrame;
using WebKit::WebURLError;
using WebKit::WebURLLoader;
using WebKit::WebURLRequest;
using WebKit::WebURLResponse;
namespace webkit_glue {
ResourceFetcher::ResourceFetcher(const GURL& url, WebFrame* frame,
WebURLRequest::TargetType target_type,
Callback* callback)
: url_(url),
target_type_(target_type),
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(frame);
}
ResourceFetcher::~ResourceFetcher() {
if (!completed_ && loader_.get())
loader_->cancel();
}
void ResourceFetcher::Cancel() {
if (!completed_) {
loader_->cancel();
completed_ = true;
}
}
void ResourceFetcher::Start(WebFrame* frame) {
WebURLRequest request(url_);
request.setTargetType(target_type_);
frame->dispatchWillSendRequest(request);
loader_.reset(WebKit::webKitClient()->createURLLoader());
loader_->loadAsynchronously(request, this);
}
void ResourceFetcher::RunCallback(const WebURLResponse& response,
const std::string& data) {
if (!callback_.get())
return;
// Take care to clear callback_ before running the callback as it may lead to
// our destruction.
scoped_ptr<Callback> callback;
callback.swap(callback_);
callback->Run(response, data);
}
/////////////////////////////////////////////////////////////////////////////
// WebURLLoaderClient methods
void ResourceFetcher::willSendRequest(
WebURLLoader* loader, WebURLRequest& new_request,
const WebURLResponse& redirect_response) {
}
void ResourceFetcher::didSendData(
WebURLLoader* loader, unsigned long long bytes_sent,
unsigned long long total_bytes_to_be_sent) {
}
void ResourceFetcher::didReceiveResponse(
WebURLLoader* loader, const WebURLResponse& response) {
DCHECK(!completed_);
response_ = response;
}
void ResourceFetcher::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 ResourceFetcher::didReceiveCachedMetadata(
WebURLLoader* loader, const char* data, int data_length) {
DCHECK(!completed_);
DCHECK(data_length > 0);
metadata_.assign(data, data_length);
}
void ResourceFetcher::didFinishLoading(
WebURLLoader* loader, double finishTime) {
DCHECK(!completed_);
completed_ = true;
RunCallback(response_, data_);
}
void ResourceFetcher::didFail(WebURLLoader* loader, const WebURLError& error) {
DCHECK(!completed_);
completed_ = true;
// Go ahead and tell our delegate that we're done.
RunCallback(WebURLResponse(), std::string());
}
/////////////////////////////////////////////////////////////////////////////
// A resource fetcher with a timeout
ResourceFetcherWithTimeout::ResourceFetcherWithTimeout(
const GURL& url, WebFrame* frame, WebURLRequest::TargetType target_type,
int timeout_secs, Callback* callback)
: ResourceFetcher(url, frame, target_type, callback) {
timeout_timer_.Start(TimeDelta::FromSeconds(timeout_secs), this,
&ResourceFetcherWithTimeout::TimeoutFired);
}
ResourceFetcherWithTimeout::~ResourceFetcherWithTimeout() {
}
void ResourceFetcherWithTimeout::TimeoutFired() {
if (!completed_) {
loader_->cancel();
didFail(NULL, WebURLError());
}
}
} // namespace webkit_glue
|
