Jorim Jaggi | 57157ac | 2019-01-22 19:01:48 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019 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 android.view; |
| 18 | |
Adrian Roos | 5ad8cd2 | 2020-03-12 18:30:54 +0000 | [diff] [blame^] | 19 | import android.annotation.NonNull; |
| 20 | import android.annotation.Nullable; |
Jorim Jaggi | 57157ac | 2019-01-22 19:01:48 +0100 | [diff] [blame] | 21 | import android.os.CancellationSignal; |
| 22 | import android.view.WindowInsets.Type.InsetsType; |
| 23 | import android.view.animation.Interpolator; |
| 24 | |
| 25 | import com.android.internal.annotations.VisibleForTesting; |
| 26 | |
| 27 | import java.util.ArrayList; |
| 28 | |
| 29 | /** |
| 30 | * An insets controller that keeps track of pending requests. This is such that an app can freely |
| 31 | * use {@link WindowInsetsController} before the view root is attached during activity startup. |
| 32 | * @hide |
| 33 | */ |
| 34 | public class PendingInsetsController implements WindowInsetsController { |
| 35 | |
| 36 | private static final int KEEP_BEHAVIOR = -1; |
| 37 | private final ArrayList<PendingRequest> mRequests = new ArrayList<>(); |
| 38 | private @Appearance int mAppearance; |
| 39 | private @Appearance int mAppearanceMask; |
| 40 | private @Behavior int mBehavior = KEEP_BEHAVIOR; |
| 41 | private final InsetsState mDummyState = new InsetsState(); |
| 42 | private InsetsController mReplayedInsetsController; |
Jorim Jaggi | ed35b17 | 2020-03-06 00:13:57 +0100 | [diff] [blame] | 43 | private ArrayList<OnControllableInsetsChangedListener> mControllableInsetsChangedListeners |
| 44 | = new ArrayList<>(); |
Jorim Jaggi | 57157ac | 2019-01-22 19:01:48 +0100 | [diff] [blame] | 45 | |
| 46 | @Override |
| 47 | public void show(int types) { |
| 48 | if (mReplayedInsetsController != null) { |
| 49 | mReplayedInsetsController.show(types); |
| 50 | } else { |
| 51 | mRequests.add(new ShowRequest(types)); |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | @Override |
| 56 | public void hide(int types) { |
| 57 | if (mReplayedInsetsController != null) { |
| 58 | mReplayedInsetsController.hide(types); |
| 59 | } else { |
| 60 | mRequests.add(new HideRequest(types)); |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | @Override |
Jorim Jaggi | 57157ac | 2019-01-22 19:01:48 +0100 | [diff] [blame] | 65 | public void setSystemBarsAppearance(int appearance, int mask) { |
| 66 | if (mReplayedInsetsController != null) { |
| 67 | mReplayedInsetsController.setSystemBarsAppearance(appearance, mask); |
| 68 | } else { |
| 69 | mAppearance = (mAppearance & ~mask) | (appearance & mask); |
| 70 | mAppearanceMask |= mask; |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | @Override |
| 75 | public int getSystemBarsAppearance() { |
| 76 | if (mReplayedInsetsController != null) { |
| 77 | return mReplayedInsetsController.getSystemBarsAppearance(); |
| 78 | } |
| 79 | return mAppearance; |
| 80 | } |
| 81 | |
| 82 | @Override |
| 83 | public void setSystemBarsBehavior(int behavior) { |
| 84 | if (mReplayedInsetsController != null) { |
| 85 | mReplayedInsetsController.setSystemBarsBehavior(behavior); |
| 86 | } else { |
| 87 | mBehavior = behavior; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | @Override |
| 92 | public int getSystemBarsBehavior() { |
| 93 | if (mReplayedInsetsController != null) { |
| 94 | return mReplayedInsetsController.getSystemBarsBehavior(); |
| 95 | } |
| 96 | return mBehavior; |
| 97 | } |
| 98 | |
| 99 | @Override |
| 100 | public InsetsState getState() { |
| 101 | return mDummyState; |
| 102 | } |
| 103 | |
Jorim Jaggi | ed35b17 | 2020-03-06 00:13:57 +0100 | [diff] [blame] | 104 | @Override |
| 105 | public void addOnControllableInsetsChangedListener( |
| 106 | OnControllableInsetsChangedListener listener) { |
| 107 | if (mReplayedInsetsController != null) { |
| 108 | mReplayedInsetsController.addOnControllableInsetsChangedListener(listener); |
| 109 | } else { |
| 110 | mControllableInsetsChangedListeners.add(listener); |
| 111 | listener.onControllableInsetsChanged(this, 0); |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | @Override |
| 116 | public void removeOnControllableInsetsChangedListener( |
| 117 | OnControllableInsetsChangedListener listener) { |
| 118 | if (mReplayedInsetsController != null) { |
| 119 | mReplayedInsetsController.removeOnControllableInsetsChangedListener(listener); |
| 120 | } else { |
| 121 | mControllableInsetsChangedListeners.remove(listener); |
| 122 | } |
| 123 | } |
| 124 | |
Jorim Jaggi | 57157ac | 2019-01-22 19:01:48 +0100 | [diff] [blame] | 125 | /** |
| 126 | * Replays the commands on {@code controller} and attaches it to this instance such that any |
| 127 | * calls will be forwarded to the real instance in the future. |
| 128 | */ |
| 129 | @VisibleForTesting |
| 130 | public void replayAndAttach(InsetsController controller) { |
| 131 | if (mBehavior != KEEP_BEHAVIOR) { |
| 132 | controller.setSystemBarsBehavior(mBehavior); |
| 133 | } |
| 134 | if (mAppearanceMask != 0) { |
| 135 | controller.setSystemBarsAppearance(mAppearance, mAppearanceMask); |
| 136 | } |
| 137 | int size = mRequests.size(); |
| 138 | for (int i = 0; i < size; i++) { |
| 139 | mRequests.get(i).replay(controller); |
| 140 | } |
Jorim Jaggi | ed35b17 | 2020-03-06 00:13:57 +0100 | [diff] [blame] | 141 | size = mControllableInsetsChangedListeners.size(); |
| 142 | for (int i = 0; i < size; i++) { |
| 143 | controller.addOnControllableInsetsChangedListener( |
| 144 | mControllableInsetsChangedListeners.get(i)); |
| 145 | } |
Jorim Jaggi | 57157ac | 2019-01-22 19:01:48 +0100 | [diff] [blame] | 146 | |
| 147 | // Reset all state so it doesn't get applied twice just in case |
| 148 | mRequests.clear(); |
Jorim Jaggi | ed35b17 | 2020-03-06 00:13:57 +0100 | [diff] [blame] | 149 | mControllableInsetsChangedListeners.clear(); |
Jorim Jaggi | 57157ac | 2019-01-22 19:01:48 +0100 | [diff] [blame] | 150 | mBehavior = KEEP_BEHAVIOR; |
| 151 | mAppearance = 0; |
| 152 | mAppearanceMask = 0; |
| 153 | |
| 154 | // After replaying, we forward everything directly to the replayed instance. |
| 155 | mReplayedInsetsController = controller; |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * Detaches the controller to no longer forward calls to the real instance. |
| 160 | */ |
| 161 | @VisibleForTesting |
| 162 | public void detach() { |
| 163 | mReplayedInsetsController = null; |
| 164 | } |
| 165 | |
Adrian Roos | 5ad8cd2 | 2020-03-12 18:30:54 +0000 | [diff] [blame^] | 166 | @Override |
| 167 | public void controlWindowInsetsAnimation(@InsetsType int types, long durationMillis, |
| 168 | @Nullable Interpolator interpolator, |
| 169 | CancellationSignal cancellationSignal, |
| 170 | @NonNull WindowInsetsAnimationControlListener listener) { |
| 171 | if (mReplayedInsetsController != null) { |
| 172 | mReplayedInsetsController.controlWindowInsetsAnimation(types, durationMillis, |
| 173 | interpolator, cancellationSignal, listener); |
| 174 | } else { |
| 175 | listener.onCancelled(); |
| 176 | } |
| 177 | } |
| 178 | |
Jorim Jaggi | 57157ac | 2019-01-22 19:01:48 +0100 | [diff] [blame] | 179 | private interface PendingRequest { |
| 180 | void replay(InsetsController controller); |
| 181 | } |
| 182 | |
| 183 | private static class ShowRequest implements PendingRequest { |
| 184 | |
| 185 | private final @InsetsType int mTypes; |
| 186 | |
| 187 | public ShowRequest(int types) { |
| 188 | mTypes = types; |
| 189 | } |
| 190 | |
| 191 | @Override |
| 192 | public void replay(InsetsController controller) { |
| 193 | controller.show(mTypes); |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | private static class HideRequest implements PendingRequest { |
| 198 | |
| 199 | private final @InsetsType int mTypes; |
| 200 | |
| 201 | public HideRequest(int types) { |
| 202 | mTypes = types; |
| 203 | } |
| 204 | |
| 205 | @Override |
| 206 | public void replay(InsetsController controller) { |
| 207 | controller.hide(mTypes); |
| 208 | } |
| 209 | } |
| 210 | } |