Index: ios/shared/chrome/browser/tabs/web_state_list_observer.h |
diff --git a/ios/shared/chrome/browser/tabs/web_state_list_observer.h b/ios/shared/chrome/browser/tabs/web_state_list_observer.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..f3a8f43edb588bff3b1e78d3be3094fa3f3eb6c4 |
--- /dev/null |
+++ b/ios/shared/chrome/browser/tabs/web_state_list_observer.h |
@@ -0,0 +1,52 @@ |
+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef IOS_SHARED_CHROME_BROWSER_TABS_WEB_STATE_LIST_OBSERVER_H_ |
+#define IOS_SHARED_CHROME_BROWSER_TABS_WEB_STATE_LIST_OBSERVER_H_ |
+ |
+#include "base/macros.h" |
+ |
+class WebStateList; |
+ |
+namespace web { |
+class WebState; |
+} |
+ |
+// Interface for listening to events occurring to WebStateLists. |
+class WebStateListObserver { |
+ public: |
+ WebStateListObserver() = default; |
+ virtual ~WebStateListObserver() = default; |
+ |
+ // Invoked after a new WebState has been added to the WebStateList at the |
+ // specified index. |
+ virtual void WebStateInsertedAt(WebStateList* web_state_list, |
+ web::WebState* web_state, |
+ size_t index) = 0; |
+ |
+ // Invoked after the WebState at the specified index is moved to another |
+ // index. |
+ virtual void WebStateMoved(WebStateList* web_state_list, |
+ web::WebState* web_state, |
+ size_t from_index, |
+ size_t to_index) = 0; |
+ |
+ // Invoked after the WebState at the specified index is replaced by another |
+ // WebState. |
+ virtual void WebStateReplacedAt(WebStateList* web_state_list, |
+ web::WebState* old_web_state, |
+ web::WebState* new_web_state, |
+ size_t index) = 0; |
+ |
+ // Invoked after the WebState at the specified index is being detached. The |
rohitrao (ping after 24h)
2017/02/14 13:49:31
"has been detached"
sdefresne
2017/02/14 15:26:35
Done.
|
+ // WebState is still valid but is no longer in the WebStateList. |
+ virtual void WebStateDetachedAt(WebStateList* web_state_list, |
+ web::WebState* web_state, |
+ size_t index) = 0; |
+ |
+ private: |
+ DISALLOW_COPY_AND_ASSIGN(WebStateListObserver); |
+}; |
+ |
+#endif // IOS_SHARED_CHROME_BROWSER_TABS_WEB_STATE_LIST_OBSERVER_H_ |