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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 #ifndef CHROME_BROWSER_EXTENSIONS_API_TABS_TABS_EVENT_ROUTER_H_ | 5 #ifndef CHROME_BROWSER_EXTENSIONS_API_TABS_TABS_EVENT_ROUTER_H_ |
6 #define CHROME_BROWSER_EXTENSIONS_API_TABS_TABS_EVENT_ROUTER_H_ | 6 #define CHROME_BROWSER_EXTENSIONS_API_TABS_TABS_EVENT_ROUTER_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <string> | 9 #include <string> |
10 | 10 |
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141 // - distinguish between tab creation and tab insertion | 141 // - distinguish between tab creation and tab insertion |
142 // - not send tab-detached after tab-removed | 142 // - not send tab-detached after tab-removed |
143 // - reduce the "noise" of TabChangedAt() when sending events to extensions | 143 // - reduce the "noise" of TabChangedAt() when sending events to extensions |
144 class TabEntry { | 144 class TabEntry { |
145 public: | 145 public: |
146 // Create a new tab entry whose initial state is TAB_COMPLETE. This | 146 // Create a new tab entry whose initial state is TAB_COMPLETE. This |
147 // constructor is required because TabEntry objects placed inside an | 147 // constructor is required because TabEntry objects placed inside an |
148 // std::map<> by value. | 148 // std::map<> by value. |
149 TabEntry(); | 149 TabEntry(); |
150 | 150 |
151 // Update the load state of the tab based on its WebContents. Returns true | 151 // Update 'complete' state baed on its WebContents. |
152 // if the state changed, false otherwise. Whether the state has changed or | 152 scoped_ptr<base::DictionaryValue> UpdateComplete( |
153 // not is used to determine if events needs to be sent to extensions during | |
154 // processing of TabChangedAt(). This method will "hold" a state-change | |
155 // to "loading", until the DidNavigate() method which should always follow | |
156 // it. Returns NULL if no updates should be sent. | |
157 base::DictionaryValue* UpdateLoadState( | |
158 const content::WebContents* contents); | 153 const content::WebContents* contents); |
159 | 154 |
160 // Indicates that a tab load has resulted in a navigation and the | 155 // Detect what has changed by holding onto the previous values. |
161 // destination url is available for inspection. Returns NULL if no updates | 156 scoped_ptr<base::DictionaryValue> Update( |
162 // should be sent. | 157 const content::WebContents* contents); |
163 base::DictionaryValue* DidNavigate(const content::WebContents* contents); | |
164 | 158 |
165 private: | 159 private: |
166 // Whether we are waiting to fire the 'complete' status change. This will | 160 // Whether we are waiting to fire the 'complete' status change. This will |
167 // occur the first time the WebContents stops loading after the | 161 // occur the first time the WebContents stops loading after the |
168 // NAV_ENTRY_COMMITTED was fired. The tab may go back into and out of the | 162 // NAV_ENTRY_COMMITTED was fired. The tab may go back into and out of the |
169 // loading state subsequently, but we will ignore those changes. | 163 // loading state subsequently, but we will ignore those changes. |
170 bool complete_waiting_on_load_; | 164 bool complete_waiting_on_load_; |
171 | 165 |
172 GURL url_; | 166 GURL url_; |
173 }; | 167 }; |
174 | 168 |
175 // Gets the TabEntry for the given |contents|. Returns TabEntry* if | 169 // Gets the TabEntry for the given |contents|. Returns TabEntry* if |
176 // found, NULL if not. | 170 // found, NULL if not. |
177 TabEntry* GetTabEntry(content::WebContents* contents); | 171 TabEntry* GetTabEntry(content::WebContents* contents); |
178 | 172 |
179 std::map<int, TabEntry> tab_entries_; | 173 std::map<int, TabEntry> tab_entries_; |
180 | 174 |
181 // The main profile that owns this event router. | 175 // The main profile that owns this event router. |
182 Profile* profile_; | 176 Profile* profile_; |
183 | 177 |
184 ScopedObserver<favicon::FaviconDriver, TabsEventRouter> | 178 ScopedObserver<favicon::FaviconDriver, TabsEventRouter> |
185 favicon_scoped_observer_; | 179 favicon_scoped_observer_; |
186 | 180 |
187 DISALLOW_COPY_AND_ASSIGN(TabsEventRouter); | 181 DISALLOW_COPY_AND_ASSIGN(TabsEventRouter); |
188 }; | 182 }; |
189 | 183 |
190 } // namespace extensions | 184 } // namespace extensions |
191 | 185 |
192 #endif // CHROME_BROWSER_EXTENSIONS_API_TABS_TABS_EVENT_ROUTER_H_ | 186 #endif // CHROME_BROWSER_EXTENSIONS_API_TABS_TABS_EVENT_ROUTER_H_ |
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