Index: ios/shared/chrome/browser/tabs/web_state_list_order_controller.h |
diff --git a/ios/shared/chrome/browser/tabs/web_state_list_order_controller.h b/ios/shared/chrome/browser/tabs/web_state_list_order_controller.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..a4dcd94d7afa28e706346289bbbd0c7c2d44adbc |
--- /dev/null |
+++ b/ios/shared/chrome/browser/tabs/web_state_list_order_controller.h |
@@ -0,0 +1,35 @@ |
+// 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_ORDER_CONTROLLER_H_ |
+#define IOS_SHARED_CHROME_BROWSER_TABS_WEB_STATE_LIST_ORDER_CONTROLLER_H_ |
+ |
+#include "base/macros.h" |
+#include "ui/base/page_transition_types.h" |
+ |
+class WebStateList; |
+ |
+namespace web { |
+class WebState; |
+} |
+ |
+// WebStateListOrderController allows different types of ordering and |
+// selection heuristics to be plugged into WebStateList. |
+class WebStateListOrderController { |
+ public: |
+ explicit WebStateListOrderController(WebStateList* web_state_list); |
+ ~WebStateListOrderController(); |
+ |
+ // Determines where to place a newly opened WebState by using the supplied |
+ // transition, opener and background flag. |
+ int DetermineInsertionIndex(ui::PageTransition transition, |
+ web::WebState* opener) const; |
+ |
+ private: |
+ WebStateList* web_state_list_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(WebStateListOrderController); |
+}; |
+ |
+#endif // IOS_SHARED_CHROME_BROWSER_TABS_WEB_STATE_LIST_ORDER_CONTROLLER_H_ |