Wale Ogunwale | 26c0dfe | 2016-12-14 14:42:30 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.wm; |
| 18 | |
Wale Ogunwale | 034a8ec | 2017-09-02 17:14:40 -0700 | [diff] [blame] | 19 | import android.content.res.Configuration; |
Wale Ogunwale | 26c0dfe | 2016-12-14 14:42:30 -0800 | [diff] [blame] | 20 | |
| 21 | /** |
| 22 | * Class that allows the owner/creator of a {@link WindowContainer} to communicate directly with the |
| 23 | * container and make changes. |
| 24 | * Note that public calls (mostly in sub-classes) into this class are assumed to be originating from |
| 25 | * outside the window manager so the window manager lock is held and appropriate permissions are |
| 26 | * checked before calls are allowed to proceed. |
| 27 | * |
| 28 | * Test class: {@link WindowContainerControllerTests} |
| 29 | */ |
Wale Ogunwale | 034a8ec | 2017-09-02 17:14:40 -0700 | [diff] [blame] | 30 | class WindowContainerController<E extends WindowContainer, I extends WindowContainerListener> |
| 31 | implements ConfigurationContainerListener { |
Wale Ogunwale | 26c0dfe | 2016-12-14 14:42:30 -0800 | [diff] [blame] | 32 | |
| 33 | final WindowManagerService mService; |
| 34 | final RootWindowContainer mRoot; |
Jorim Jaggi | 36db127 | 2017-03-28 00:43:31 +0200 | [diff] [blame] | 35 | final WindowHashMap mWindowMap; |
Wale Ogunwale | 26c0dfe | 2016-12-14 14:42:30 -0800 | [diff] [blame] | 36 | |
| 37 | // The window container this controller owns. |
| 38 | E mContainer; |
| 39 | // Interface for communicating changes back to the owner. |
| 40 | final I mListener; |
| 41 | |
| 42 | WindowContainerController(I listener, WindowManagerService service) { |
| 43 | mListener = listener; |
| 44 | mService = service; |
| 45 | mRoot = mService != null ? mService.mRoot : null; |
| 46 | mWindowMap = mService != null ? mService.mWindowMap : null; |
| 47 | } |
| 48 | |
| 49 | void setContainer(E container) { |
| 50 | if (mContainer != null && container != null) { |
| 51 | throw new IllegalArgumentException("Can't set container=" + container |
| 52 | + " for controller=" + this + " Already set to=" + mContainer); |
| 53 | } |
| 54 | mContainer = container; |
Wale Ogunwale | 034a8ec | 2017-09-02 17:14:40 -0700 | [diff] [blame] | 55 | if (mContainer != null && mListener != null) { |
| 56 | mListener.registerConfigurationChangeListener(this); |
| 57 | } |
Wale Ogunwale | 26c0dfe | 2016-12-14 14:42:30 -0800 | [diff] [blame] | 58 | } |
| 59 | |
| 60 | void removeContainer() { |
| 61 | // TODO: See if most uses cases should support removeIfPossible here. |
| 62 | //mContainer.removeIfPossible(); |
Wale Ogunwale | 034a8ec | 2017-09-02 17:14:40 -0700 | [diff] [blame] | 63 | if (mContainer == null) { |
| 64 | return; |
| 65 | } |
| 66 | |
| 67 | mContainer.setController(null); |
| 68 | mContainer = null; |
| 69 | if (mListener != null) { |
| 70 | mListener.unregisterConfigurationChangeListener(this); |
Wale Ogunwale | 26c0dfe | 2016-12-14 14:42:30 -0800 | [diff] [blame] | 71 | } |
| 72 | } |
| 73 | |
Wale Ogunwale | 034a8ec | 2017-09-02 17:14:40 -0700 | [diff] [blame] | 74 | @Override |
| 75 | public void onOverrideConfigurationChanged(Configuration overrideConfiguration) { |
| 76 | synchronized (mWindowMap) { |
| 77 | if (mContainer == null) { |
| 78 | return; |
| 79 | } |
| 80 | mContainer.onOverrideConfigurationChanged(overrideConfiguration); |
| 81 | } |
Wale Ogunwale | 26c0dfe | 2016-12-14 14:42:30 -0800 | [diff] [blame] | 82 | } |
| 83 | } |