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| 1 // Copyright 2015 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. |
| 4 |
| 5 package org.chromium.chrome.browser.compositor.layouts; |
| 6 |
| 7 /** |
| 8 * An observer that listens for active {@link Layout} changes. |
| 9 */ |
| 10 public interface SceneChangeObserver { |
| 11 /** |
| 12 * Called when a layout wants to hint that a new tab might be selected soon.
This is not called |
| 13 * every time a tab is selected. |
| 14 * @param tabId The id of the tab that might be selected soon. |
| 15 */ |
| 16 void onTabSelectionHinted(int tabId); |
| 17 |
| 18 /** |
| 19 * Called when the active {@link Layout} changes. |
| 20 * @param layout The new active {@link Layout}. |
| 21 */ |
| 22 void onSceneChange(Layout layout); |
| 23 } |
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