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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/manifest/manifest_manager.h" | |
6 | |
7 #include "base/bind.h" | |
8 #include "content/common/manifest_manager_messages.h" | |
9 #include "content/public/renderer/render_frame.h" | |
10 #include "content/renderer/fetchers/manifest_fetcher.h" | |
11 #include "content/renderer/manifest/manifest_parser.h" | |
12 #include "third_party/WebKit/public/platform/WebURLResponse.h" | |
13 #include "third_party/WebKit/public/web/WebDocument.h" | |
14 #include "third_party/WebKit/public/web/WebLocalFrame.h" | |
15 | |
16 namespace content { | |
17 | |
18 ManifestManager::ManifestManager(RenderFrame* render_frame) | |
19 : RenderFrameObserver(render_frame), | |
20 may_have_manifest_(false), | |
21 manifest_dirty_(true) { | |
22 } | |
23 | |
24 ManifestManager::~ManifestManager() { | |
25 } | |
26 | |
27 bool ManifestManager::OnMessageReceived(const IPC::Message& message) { | |
28 bool handled = true; | |
29 | |
30 IPC_BEGIN_MESSAGE_MAP(ManifestManager, message) | |
31 IPC_MESSAGE_HANDLER(ManifestManagerMsg_RequestManifest, OnRequestManifest) | |
32 IPC_MESSAGE_UNHANDLED(handled = false) | |
33 IPC_END_MESSAGE_MAP() | |
34 | |
35 return handled; | |
36 } | |
37 | |
38 void ManifestManager::OnRequestManifest(int request_id) { | |
39 request_ids_.push_back(request_id); | |
Michael van Ouwerkerk
2014/09/09 15:34:56
Why store this list of ids separately? You can bin
mlamouri (slow - plz ping)
2014/09/10 17:06:20
Done.
| |
40 GetManifest(base::Bind(&ManifestManager::OnRequestManifestComplete, | |
41 base::Unretained(this))); | |
42 } | |
43 | |
44 void ManifestManager::OnRequestManifestComplete( | |
45 const Manifest& manifest) { | |
46 // The ManifestManager will run the callbacks in FIFO order so the request_ids | |
47 // list can be used the same way. | |
48 // This is an implementation detail that the browser process is not aware of. | |
49 int request_id = request_ids_.front(); | |
50 request_ids_.pop_front(); | |
51 | |
52 Send(new ManifestManagerHostMsg_RequestManifestResponse( | |
53 routing_id(), request_id, manifest)); | |
54 } | |
55 | |
56 void ManifestManager::GetManifest(const GetManifestCallback& callback) { | |
57 if (!may_have_manifest_) { | |
58 callback.Run(Manifest()); | |
59 return; | |
60 } | |
61 | |
62 if (!manifest_dirty_) { | |
63 callback.Run(manifest_); | |
64 return; | |
65 } | |
66 | |
67 pending_callbacks_.push_back(callback); | |
68 | |
69 // Just wait for the running call to be done if there are other callbacks. | |
70 if (pending_callbacks_.size() > 1) | |
71 return; | |
72 | |
73 DownloadManifest(); | |
74 } | |
75 | |
76 void ManifestManager::ManifestChanged() { | |
77 may_have_manifest_ = true; | |
78 manifest_dirty_ = true; | |
79 } | |
80 | |
81 void ManifestManager::DownloadManifest() { | |
82 GURL url(render_frame()->GetWebFrame()->document().manifestURL()); | |
83 | |
84 if (url.is_empty()) { | |
85 ResolveCallbacks(ResolveStateFailure); | |
86 return; | |
87 } | |
88 | |
89 fetcher_.reset(new ManifestFetcher(url)); | |
90 | |
91 // TODO(mlamouri,kenneth): this is not yet taking into account manifest-src | |
92 // CSP rule, see http://crbug.com/409996. | |
93 fetcher_->Start(render_frame()->GetWebFrame(), | |
94 base::Bind(&ManifestManager::OnManifestFetchComplete, | |
95 base::Unretained(this))); | |
96 } | |
97 | |
98 void ManifestManager::OnManifestFetchComplete( | |
99 const blink::WebURLResponse& response, | |
100 const std::string& data) { | |
101 if (response.isNull() && data.empty()) { | |
102 ResolveCallbacks(ResolveStateFailure); | |
103 return; | |
104 } | |
105 | |
106 manifest_ = ManifestParser::Parse(data); | |
107 ResolveCallbacks(ResolveStateSuccess); | |
108 } | |
109 | |
110 void ManifestManager::ResolveCallbacks(ResolveState state) { | |
111 if (state == ResolveStateFailure) | |
112 manifest_ = Manifest(); | |
113 | |
114 for (std::list<GetManifestCallback>::const_iterator | |
115 it = pending_callbacks_.begin(); it != pending_callbacks_.end(); ++it) { | |
116 it->Run(manifest_); | |
117 } | |
118 | |
119 pending_callbacks_.clear(); | |
120 manifest_dirty_ = state != ResolveStateSuccess; | |
121 } | |
122 | |
123 } // namespace content | |
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