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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "chrome/browser/user_style_sheet_watcher.h" | 5 #include "chrome/browser/user_style_sheet_watcher.h" |
6 | 6 |
7 #include "base/base64.h" | 7 #include "base/base64.h" |
8 #include "base/bind.h" | 8 #include "base/bind.h" |
9 #include "base/file_util.h" | 9 #include "base/file_util.h" |
10 #include "chrome/browser/profiles/profile.h" | 10 #include "chrome/browser/profiles/profile.h" |
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50 | 50 |
51 GURL user_style_sheet() const { | 51 GURL user_style_sheet() const { |
52 return user_style_sheet_; | 52 return user_style_sheet_; |
53 } | 53 } |
54 | 54 |
55 // Load the user style sheet on the file thread and convert it to a | 55 // Load the user style sheet on the file thread and convert it to a |
56 // base64 URL. Posts the base64 URL back to the UI thread. | 56 // base64 URL. Posts the base64 URL back to the UI thread. |
57 void LoadStyleSheet(const base::FilePath& style_sheet_file); | 57 void LoadStyleSheet(const base::FilePath& style_sheet_file); |
58 | 58 |
59 // Register a callback to be called whenever the stylesheet gets updated. | 59 // Register a callback to be called whenever the stylesheet gets updated. |
60 scoped_ptr<base::CallbackRegistry<void(void)>::Subscription> | 60 scoped_ptr<base::CallbackList<void(void)>::Subscription> |
61 RegisterOnStyleSheetUpdatedCallback(const base::Closure& callback); | 61 RegisterOnStyleSheetUpdatedCallback(const base::Closure& callback); |
62 | 62 |
63 // Send out a notification if the stylesheet has already been loaded. | 63 // Send out a notification if the stylesheet has already been loaded. |
64 void NotifyLoaded(); | 64 void NotifyLoaded(); |
65 | 65 |
66 // FilePathWatcher::Callback method: | 66 // FilePathWatcher::Callback method: |
67 void NotifyPathChanged(const base::FilePath& path, bool error); | 67 void NotifyPathChanged(const base::FilePath& path, bool error); |
68 | 68 |
69 private: | 69 private: |
70 friend class base::RefCountedThreadSafe<UserStyleSheetLoader>; | 70 friend class base::RefCountedThreadSafe<UserStyleSheetLoader>; |
71 ~UserStyleSheetLoader(); | 71 ~UserStyleSheetLoader(); |
72 | 72 |
73 // Called on the UI thread after the stylesheet has loaded. | 73 // Called on the UI thread after the stylesheet has loaded. |
74 void SetStyleSheet(const GURL& url); | 74 void SetStyleSheet(const GURL& url); |
75 | 75 |
76 // The user style sheet as a base64 data:// URL. | 76 // The user style sheet as a base64 data:// URL. |
77 GURL user_style_sheet_; | 77 GURL user_style_sheet_; |
78 | 78 |
79 // Whether the stylesheet has been loaded. | 79 // Whether the stylesheet has been loaded. |
80 bool has_loaded_; | 80 bool has_loaded_; |
81 | 81 |
82 base::CallbackRegistry<void(void)> style_sheet_updated_callbacks_; | 82 base::CallbackList<void(void)> style_sheet_updated_callbacks_; |
83 | 83 |
84 DISALLOW_COPY_AND_ASSIGN(UserStyleSheetLoader); | 84 DISALLOW_COPY_AND_ASSIGN(UserStyleSheetLoader); |
85 }; | 85 }; |
86 | 86 |
87 UserStyleSheetLoader::UserStyleSheetLoader() | 87 UserStyleSheetLoader::UserStyleSheetLoader() |
88 : has_loaded_(false) { | 88 : has_loaded_(false) { |
89 } | 89 } |
90 | 90 |
91 UserStyleSheetLoader::~UserStyleSheetLoader() { | 91 UserStyleSheetLoader::~UserStyleSheetLoader() { |
92 } | 92 } |
93 | 93 |
94 scoped_ptr<base::CallbackRegistry<void(void)>::Subscription> | 94 scoped_ptr<base::CallbackList<void(void)>::Subscription> |
95 UserStyleSheetLoader::RegisterOnStyleSheetUpdatedCallback( | 95 UserStyleSheetLoader::RegisterOnStyleSheetUpdatedCallback( |
96 const base::Closure& callback) { | 96 const base::Closure& callback) { |
97 return style_sheet_updated_callbacks_.Add(callback); | 97 return style_sheet_updated_callbacks_.Add(callback); |
98 } | 98 } |
99 | 99 |
100 void UserStyleSheetLoader::NotifyLoaded() { | 100 void UserStyleSheetLoader::NotifyLoaded() { |
101 if (has_loaded_) { | 101 if (has_loaded_) { |
102 style_sheet_updated_callbacks_.Notify(); | 102 style_sheet_updated_callbacks_.Notify(); |
103 } | 103 } |
104 } | 104 } |
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185 LOG(ERROR) << "Failed to setup watch for " << style_sheet_file.value(); | 185 LOG(ERROR) << "Failed to setup watch for " << style_sheet_file.value(); |
186 } | 186 } |
187 loader_->LoadStyleSheet(style_sheet_file); | 187 loader_->LoadStyleSheet(style_sheet_file); |
188 } | 188 } |
189 } | 189 } |
190 | 190 |
191 GURL UserStyleSheetWatcher::user_style_sheet() const { | 191 GURL UserStyleSheetWatcher::user_style_sheet() const { |
192 return loader_->user_style_sheet(); | 192 return loader_->user_style_sheet(); |
193 } | 193 } |
194 | 194 |
195 scoped_ptr<base::CallbackRegistry<void(void)>::Subscription> | 195 scoped_ptr<base::CallbackList<void(void)>::Subscription> |
196 UserStyleSheetWatcher::RegisterOnStyleSheetUpdatedCallback( | 196 UserStyleSheetWatcher::RegisterOnStyleSheetUpdatedCallback( |
197 const base::Closure& callback) { | 197 const base::Closure& callback) { |
198 return loader_->RegisterOnStyleSheetUpdatedCallback(callback); | 198 return loader_->RegisterOnStyleSheetUpdatedCallback(callback); |
199 } | 199 } |
200 | 200 |
201 void UserStyleSheetWatcher::Observe(int type, | 201 void UserStyleSheetWatcher::Observe(int type, |
202 const content::NotificationSource& source, | 202 const content::NotificationSource& source, |
203 const content::NotificationDetails& details) { | 203 const content::NotificationDetails& details) { |
204 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | 204 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
205 DCHECK(type == content::NOTIFICATION_WEB_CONTENTS_RENDER_VIEW_HOST_CREATED); | 205 DCHECK(type == content::NOTIFICATION_WEB_CONTENTS_RENDER_VIEW_HOST_CREATED); |
206 if (profile_->IsSameProfile(Profile::FromBrowserContext( | 206 if (profile_->IsSameProfile(Profile::FromBrowserContext( |
207 content::Source<WebContents>(source)->GetBrowserContext()))) { | 207 content::Source<WebContents>(source)->GetBrowserContext()))) { |
208 loader_->NotifyLoaded(); | 208 loader_->NotifyLoaded(); |
209 registrar_.RemoveAll(); | 209 registrar_.RemoveAll(); |
210 } | 210 } |
211 } | 211 } |
212 | 212 |
213 void UserStyleSheetWatcher::ShutdownOnUIThread() { | 213 void UserStyleSheetWatcher::ShutdownOnUIThread() { |
214 registrar_.RemoveAll(); | 214 registrar_.RemoveAll(); |
215 } | 215 } |
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