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.
5 #include "chrome/browser/ui/webui/favicon_source.h"
8 #include "base/bind_helpers.h"
9 #include "base/strings/string_number_conversions.h"
10 #include "chrome/browser/favicon/favicon_service_factory.h"
11 #include "chrome/browser/history/top_sites.h"
12 #include "chrome/browser/profiles/profile.h"
13 #include "chrome/browser/search/instant_io_context.h"
14 #include "chrome/browser/sync/glue/session_model_associator.h"
15 #include "chrome/browser/sync/profile_sync_service.h"
16 #include "chrome/browser/sync/profile_sync_service_factory.h"
17 #include "chrome/common/favicon/favicon_url_parser.h"
18 #include "chrome/common/url_constants.h"
19 #include "grit/locale_settings.h"
20 #include "grit/ui_resources.h"
21 #include "net/url_request/url_request.h"
22 #include "ui/base/l10n/l10n_util.h"
23 #include "ui/base/layout.h"
24 #include "ui/base/resource/resource_bundle.h"
25 #include "ui/base/webui/web_ui_util.h"
27 FaviconSource::IconRequest::IconRequest()
28 : size_in_dip(gfx::kFaviconSize),
29 scale_factor(ui::SCALE_FACTOR_NONE) {
32 FaviconSource::IconRequest::IconRequest(
33 const content::URLDataSource::GotDataCallback& cb,
36 ui::ScaleFactor scale)
43 FaviconSource::IconRequest::~IconRequest() {
46 FaviconSource::FaviconSource(Profile* profile, IconType type)
47 : profile_(profile->GetOriginalProfile()),
48 icon_types_(type == FAVICON ? chrome::FAVICON :
49 chrome::TOUCH_PRECOMPOSED_ICON | chrome::TOUCH_ICON |
53 FaviconSource::~FaviconSource() {
56 std::string FaviconSource::GetSource() const {
57 return icon_types_ == chrome::FAVICON ?
58 chrome::kChromeUIFaviconHost : chrome::kChromeUITouchIconHost;
61 void FaviconSource::StartDataRequest(
62 const std::string& path,
63 int render_process_id,
65 const content::URLDataSource::GotDataCallback& callback) {
66 FaviconService* favicon_service =
67 FaviconServiceFactory::GetForProfile(profile_, Profile::EXPLICIT_ACCESS);
68 if (!favicon_service) {
69 SendDefaultResponse(callback);
73 chrome::ParsedFaviconPath parsed;
74 bool success = chrome::ParseFaviconPath(path, icon_types_, &parsed);
76 SendDefaultResponse(callback);
82 if (parsed.is_icon_url) {
83 // TODO(michaelbai): Change GetRawFavicon to support combination of
85 favicon_service->GetRawFavicon(
90 base::Bind(&FaviconSource::OnFaviconDataAvailable,
91 base::Unretained(this),
95 parsed.scale_factor)),
96 &cancelable_task_tracker_);
98 // Intercept requests for prepopulated pages.
99 for (size_t i = 0; i < arraysize(history::kPrepopulatedPages); i++) {
101 l10n_util::GetStringUTF8(history::kPrepopulatedPages[i].url_id)) {
103 ResourceBundle::GetSharedInstance().LoadDataResourceBytesForScale(
104 history::kPrepopulatedPages[i].favicon_id,
105 parsed.scale_factor));
110 favicon_service->GetRawFaviconForURL(
111 FaviconService::FaviconForURLParams(
112 profile_, url, icon_types_, parsed.size_in_dip),
114 base::Bind(&FaviconSource::OnFaviconDataAvailable,
115 base::Unretained(this),
116 IconRequest(callback,
119 parsed.scale_factor)),
120 &cancelable_task_tracker_);
124 std::string FaviconSource::GetMimeType(const std::string&) const {
125 // We need to explicitly return a mime type, otherwise if the user tries to
126 // drag the image they get no extension.
130 bool FaviconSource::ShouldReplaceExistingSource() const {
131 // Leave the existing DataSource in place, otherwise we'll drop any pending
132 // requests on the floor.
136 bool FaviconSource::ShouldServiceRequest(const net::URLRequest* request) const {
137 if (request->url().SchemeIs(chrome::kChromeSearchScheme))
138 return InstantIOContext::ShouldServiceRequest(request);
139 return URLDataSource::ShouldServiceRequest(request);
142 bool FaviconSource::HandleMissingResource(const IconRequest& request) {
143 // If the favicon is not available, try to use the synced favicon.
144 ProfileSyncService* sync_service =
145 ProfileSyncServiceFactory::GetInstance()->GetForProfile(profile_);
146 browser_sync::SessionModelAssociator* associator = sync_service ?
147 sync_service->GetSessionModelAssociator() : NULL;
149 scoped_refptr<base::RefCountedMemory> response;
151 associator->GetSyncedFaviconForPageURL(request.request_path.spec(),
153 request.callback.Run(response.get());
159 void FaviconSource::OnFaviconDataAvailable(
160 const IconRequest& request,
161 const chrome::FaviconBitmapResult& bitmap_result) {
162 if (bitmap_result.is_valid()) {
163 // Forward the data along to the networking system.
164 request.callback.Run(bitmap_result.bitmap_data.get());
165 } else if (!HandleMissingResource(request)) {
166 SendDefaultResponse(request);
170 void FaviconSource::SendDefaultResponse(
171 const content::URLDataSource::GotDataCallback& callback) {
173 IconRequest(callback, GURL(), 16, ui::SCALE_FACTOR_100P));
176 void FaviconSource::SendDefaultResponse(const IconRequest& icon_request) {
179 switch (icon_request.size_in_dip) {
181 favicon_index = SIZE_64;
182 resource_id = IDR_DEFAULT_FAVICON_64;
185 favicon_index = SIZE_32;
186 resource_id = IDR_DEFAULT_FAVICON_32;
189 favicon_index = SIZE_16;
190 resource_id = IDR_DEFAULT_FAVICON;
193 base::RefCountedMemory* default_favicon =
194 default_favicons_[favicon_index].get();
196 if (!default_favicon) {
197 ui::ScaleFactor scale_factor = icon_request.scale_factor;
198 default_favicon = ResourceBundle::GetSharedInstance()
199 .LoadDataResourceBytesForScale(resource_id, scale_factor);
200 default_favicons_[favicon_index] = default_favicon;
203 icon_request.callback.Run(default_favicon);