resource_context_impl.cc revision 2a99a7e74a7f215066514fe81d2bfa6639d9eddd 
1// Copyright (c) 2012 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/browser/resource_context_impl.h"
6
7#include "base/logging.h"
8#include "content/browser/fileapi/chrome_blob_storage_context.h"
9#include "content/browser/host_zoom_map_impl.h"
10#include "content/browser/loader/resource_dispatcher_host_impl.h"
11#include "content/browser/loader/resource_request_info_impl.h"
12#include "content/browser/streams/stream_context.h"
13#include "content/browser/webui/url_data_manager_backend.h"
14#include "content/public/browser/browser_context.h"
15#include "content/public/browser/browser_thread.h"
16
17using base::UserDataAdapter;
18
19namespace content {
20
21namespace {
22
23// Key names on ResourceContext.
24const char kBlobStorageContextKeyName[] = "content_blob_storage_context";
25const char kHostZoomMapKeyName[] = "content_host_zoom_map";
26const char kStreamContextKeyName[] = "content_stream_context";
27const char kURLDataManagerBackendKeyName[] = "url_data_manager_backend";
28
29class NonOwningZoomData : public base::SupportsUserData::Data {
30 public:
31  explicit NonOwningZoomData(HostZoomMap* hzm) : host_zoom_map_(hzm) {}
32  HostZoomMap* host_zoom_map() { return host_zoom_map_; }
33
34 private:
35  HostZoomMap* host_zoom_map_;
36};
37
38}  // namespace
39
40
41ResourceContext::ResourceContext() {
42  if (ResourceDispatcherHostImpl::Get())
43    ResourceDispatcherHostImpl::Get()->AddResourceContext(this);
44}
45
46ResourceContext::~ResourceContext() {
47  ResourceDispatcherHostImpl* rdhi = ResourceDispatcherHostImpl::Get();
48  if (rdhi) {
49    rdhi->CancelRequestsForContext(this);
50    rdhi->RemoveResourceContext(this);
51  }
52
53  // In some tests this object is destructed on UI thread.
54  DetachUserDataThread();
55}
56
57ChromeBlobStorageContext* GetChromeBlobStorageContextForResourceContext(
58    ResourceContext* resource_context) {
59  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
60  return UserDataAdapter<ChromeBlobStorageContext>::Get(
61      resource_context, kBlobStorageContextKeyName);
62}
63
64StreamContext* GetStreamContextForResourceContext(
65    ResourceContext* resource_context) {
66  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
67  return UserDataAdapter<StreamContext>::Get(
68      resource_context, kStreamContextKeyName);
69}
70
71HostZoomMap* GetHostZoomMapForResourceContext(ResourceContext* context) {
72  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
73  return static_cast<NonOwningZoomData*>(
74      context->GetUserData(kHostZoomMapKeyName))->host_zoom_map();
75}
76
77URLDataManagerBackend* GetURLDataManagerForResourceContext(
78    ResourceContext* context) {
79  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
80  if (!context->GetUserData(kURLDataManagerBackendKeyName)) {
81    context->SetUserData(kURLDataManagerBackendKeyName,
82                         new URLDataManagerBackend());
83  }
84  return static_cast<URLDataManagerBackend*>(
85      context->GetUserData(kURLDataManagerBackendKeyName));
86}
87
88void InitializeResourceContext(BrowserContext* browser_context) {
89  ResourceContext* resource_context = browser_context->GetResourceContext();
90  DCHECK(!resource_context->GetUserData(kHostZoomMapKeyName));
91
92  resource_context->SetUserData(
93      kBlobStorageContextKeyName,
94      new UserDataAdapter<ChromeBlobStorageContext>(
95          ChromeBlobStorageContext::GetFor(browser_context)));
96
97  resource_context->SetUserData(
98      kStreamContextKeyName,
99      new UserDataAdapter<StreamContext>(
100          StreamContext::GetFor(browser_context)));
101
102  // This object is owned by the BrowserContext and not ResourceContext, so
103  // store a non-owning pointer here.
104  resource_context->SetUserData(
105      kHostZoomMapKeyName,
106      new NonOwningZoomData(
107          HostZoomMap::GetForBrowserContext(browser_context)));
108
109  resource_context->DetachUserDataThread();
110}
111
112}  // namespace content
113