Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2020 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 | |
| 19 | import static android.app.WindowConfiguration.ACTIVITY_TYPE_HOME; |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 20 | import static android.app.WindowConfiguration.ACTIVITY_TYPE_STANDARD; |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 21 | import static android.app.WindowConfiguration.ACTIVITY_TYPE_UNDEFINED; |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 22 | import static android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM; |
| 23 | import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN; |
Jorim Jaggi | 785edb4 | 2020-05-08 12:34:47 +0000 | [diff] [blame] | 24 | import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN_OR_SPLIT_SCREEN_SECONDARY; |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 25 | import static android.app.WindowConfiguration.WINDOWING_MODE_MULTI_WINDOW; |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 26 | import static android.app.WindowConfiguration.WINDOWING_MODE_PINNED; |
| 27 | import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_PRIMARY; |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 28 | import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_SECONDARY; |
| 29 | import static android.app.WindowConfiguration.WINDOWING_MODE_UNDEFINED; |
| 30 | import static android.app.WindowConfiguration.isSplitScreenWindowingMode; |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 31 | import static android.content.pm.ActivityInfo.SCREEN_ORIENTATION_BEHIND; |
| 32 | import static android.content.pm.ActivityInfo.SCREEN_ORIENTATION_UNSET; |
| 33 | import static android.content.pm.ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 34 | |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 35 | import static com.android.server.wm.ActivityStack.ActivityState.RESUMED; |
| 36 | import static com.android.server.wm.ActivityStack.STACK_VISIBILITY_VISIBLE; |
| 37 | import static com.android.server.wm.ActivityStackSupervisor.TAG_TASKS; |
| 38 | import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_STATES; |
| 39 | import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_TASKS; |
| 40 | import static com.android.server.wm.ActivityTaskManagerService.TAG_STACK; |
| 41 | import static com.android.server.wm.DisplayContent.alwaysCreateStack; |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 42 | import static com.android.server.wm.ProtoLogGroup.WM_DEBUG_ADD_REMOVE; |
| 43 | import static com.android.server.wm.ProtoLogGroup.WM_DEBUG_ORIENTATION; |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 44 | import static com.android.server.wm.RootWindowContainer.TAG_STATES; |
Andrii Kulian | 86d676c | 2020-03-27 19:34:54 -0700 | [diff] [blame] | 45 | import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_STACK; |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 46 | import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM; |
| 47 | |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 48 | import android.annotation.Nullable; |
| 49 | import android.app.ActivityOptions; |
| 50 | import android.app.WindowConfiguration; |
| 51 | import android.content.Intent; |
| 52 | import android.content.pm.ActivityInfo; |
| 53 | import android.content.pm.ApplicationInfo; |
| 54 | import android.os.UserHandle; |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 55 | import android.util.Slog; |
| 56 | import android.view.SurfaceControl; |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 57 | import android.window.WindowContainerTransaction; |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 58 | |
| 59 | import com.android.internal.annotations.VisibleForTesting; |
| 60 | import com.android.internal.util.ToBooleanFunction; |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 61 | import com.android.internal.util.function.pooled.PooledLambda; |
| 62 | import com.android.internal.util.function.pooled.PooledPredicate; |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 63 | import com.android.server.protolog.common.ProtoLog; |
| 64 | |
Andrii Kulian | f9df4a8 | 2020-03-31 12:09:27 -0700 | [diff] [blame] | 65 | import java.io.PrintWriter; |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 66 | import java.util.ArrayList; |
| 67 | import java.util.List; |
| 68 | |
| 69 | /** |
Andrii Kulian | 86d676c | 2020-03-27 19:34:54 -0700 | [diff] [blame] | 70 | * {@link DisplayArea} that represents a section of a screen that contains app window containers. |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 71 | */ |
Andrii Kulian | 86d676c | 2020-03-27 19:34:54 -0700 | [diff] [blame] | 72 | final class TaskDisplayArea extends DisplayArea<ActivityStack> { |
Andrii Kulian | 1cb59dd | 2020-04-10 12:17:17 -0700 | [diff] [blame] | 73 | |
Andrii Kulian | 86d676c | 2020-03-27 19:34:54 -0700 | [diff] [blame] | 74 | DisplayContent mDisplayContent; |
Andrii Kulian | 1cb59dd | 2020-04-10 12:17:17 -0700 | [diff] [blame] | 75 | |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 76 | /** |
| 77 | * A control placed at the appropriate level for transitions to occur. |
| 78 | */ |
| 79 | private SurfaceControl mAppAnimationLayer; |
| 80 | private SurfaceControl mBoostedAppAnimationLayer; |
| 81 | private SurfaceControl mHomeAppAnimationLayer; |
| 82 | |
| 83 | /** |
| 84 | * Given that the split-screen divider does not have an AppWindowToken, it |
| 85 | * will have to live inside of a "NonAppWindowContainer". However, in visual Z order |
| 86 | * it will need to be interleaved with some of our children, appearing on top of |
| 87 | * both docked stacks but underneath any assistant stacks. |
| 88 | * |
| 89 | * To solve this problem we have this anchor control, which will always exist so |
| 90 | * we can always assign it the correct value in our {@link #assignChildLayers}. |
| 91 | * Likewise since it always exists, we can always |
| 92 | * assign the divider a layer relative to it. This way we prevent linking lifecycle |
| 93 | * events between tasks and the divider window. |
| 94 | */ |
| 95 | private SurfaceControl mSplitScreenDividerAnchor; |
| 96 | |
| 97 | // Cached reference to some special tasks we tend to get a lot so we don't need to loop |
| 98 | // through the list to find them. |
| 99 | private ActivityStack mRootHomeTask; |
| 100 | private ActivityStack mRootPinnedTask; |
| 101 | private ActivityStack mRootSplitScreenPrimaryTask; |
| 102 | |
| 103 | private final ArrayList<ActivityStack> mTmpAlwaysOnTopStacks = new ArrayList<>(); |
| 104 | private final ArrayList<ActivityStack> mTmpNormalStacks = new ArrayList<>(); |
| 105 | private final ArrayList<ActivityStack> mTmpHomeStacks = new ArrayList<>(); |
| 106 | |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 107 | private ArrayList<Task> mTmpTasks = new ArrayList<>(); |
| 108 | |
| 109 | private ActivityTaskManagerService mAtmService; |
| 110 | |
| 111 | private RootWindowContainer mRootWindowContainer; |
| 112 | |
| 113 | // When non-null, new tasks get put into this root task. |
Andrii Kulian | 86d676c | 2020-03-27 19:34:54 -0700 | [diff] [blame] | 114 | Task mLaunchRootTask = null; |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 115 | |
| 116 | /** |
| 117 | * A focusable stack that is purposely to be positioned at the top. Although the stack may not |
| 118 | * have the topmost index, it is used as a preferred candidate to prevent being unable to resume |
| 119 | * target stack properly when there are other focusable always-on-top stacks. |
| 120 | */ |
Andrii Kulian | 86d676c | 2020-03-27 19:34:54 -0700 | [diff] [blame] | 121 | ActivityStack mPreferredTopFocusableStack; |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 122 | |
| 123 | private final RootWindowContainer.FindTaskResult |
| 124 | mTmpFindTaskResult = new RootWindowContainer.FindTaskResult(); |
| 125 | |
Galia Peycheva | 7ecd6ef | 2020-03-26 19:59:40 +0100 | [diff] [blame] | 126 | // Indicates whether the Assistant should show on top of the Dream (respectively, above |
| 127 | // everything else on screen). Otherwise, it will be put under always-on-top stacks. |
| 128 | private final boolean mAssistantOnTopOfDream; |
| 129 | |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 130 | /** |
| 131 | * If this is the same as {@link #getFocusedStack} then the activity on the top of the focused |
| 132 | * stack has been resumed. If stacks are changing position this will hold the old stack until |
| 133 | * the new stack becomes resumed after which it will be set to current focused stack. |
| 134 | */ |
| 135 | ActivityStack mLastFocusedStack; |
Andrii Kulian | 4c0fd0d | 2020-03-29 13:32:14 -0700 | [diff] [blame] | 136 | /** |
| 137 | * All of the stacks on this display. Order matters, topmost stack is in front of all other |
| 138 | * stacks, bottommost behind. Accessed directly by ActivityManager package classes. Any calls |
| 139 | * changing the list should also call {@link #onStackOrderChanged()}. |
| 140 | */ |
| 141 | private ArrayList<OnStackOrderChangedListener> mStackOrderChangedCallbacks = new ArrayList<>(); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 142 | |
Andrii Kulian | f9df4a8 | 2020-03-31 12:09:27 -0700 | [diff] [blame] | 143 | /** |
| 144 | * The task display area is removed from the system and we are just waiting for all activities |
| 145 | * on it to be finished before removing this object. |
| 146 | */ |
| 147 | private boolean mRemoved; |
| 148 | |
Andrii Kulian | 44b3c56 | 2020-04-01 12:49:56 -0700 | [diff] [blame] | 149 | TaskDisplayArea(DisplayContent displayContent, WindowManagerService service, String name, |
| 150 | int displayAreaFeature) { |
| 151 | super(service, Type.ANY, name, displayAreaFeature); |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 152 | mDisplayContent = displayContent; |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 153 | mRootWindowContainer = service.mRoot; |
| 154 | mAtmService = service.mAtmService; |
Galia Peycheva | 7ecd6ef | 2020-03-26 19:59:40 +0100 | [diff] [blame] | 155 | |
| 156 | mAssistantOnTopOfDream = mWmService.mContext.getResources().getBoolean( |
| 157 | com.android.internal.R.bool.config_assistantOnTopOfDream); |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 158 | } |
| 159 | |
| 160 | /** |
| 161 | * Returns the topmost stack on the display that is compatible with the input windowing mode |
| 162 | * and activity type. Null is no compatible stack on the display. |
| 163 | */ |
| 164 | ActivityStack getStack(int windowingMode, int activityType) { |
| 165 | if (activityType == ACTIVITY_TYPE_HOME) { |
| 166 | return mRootHomeTask; |
| 167 | } |
| 168 | if (windowingMode == WINDOWING_MODE_PINNED) { |
| 169 | return mRootPinnedTask; |
| 170 | } else if (windowingMode == WINDOWING_MODE_SPLIT_SCREEN_PRIMARY) { |
| 171 | return mRootSplitScreenPrimaryTask; |
| 172 | } |
| 173 | for (int i = getChildCount() - 1; i >= 0; --i) { |
| 174 | final ActivityStack stack = getChildAt(i); |
| 175 | if (activityType == ACTIVITY_TYPE_UNDEFINED |
| 176 | && windowingMode == stack.getWindowingMode()) { |
| 177 | // Passing in undefined type means we want to match the topmost stack with the |
| 178 | // windowing mode. |
| 179 | return stack; |
| 180 | } |
| 181 | if (stack.isCompatible(windowingMode, activityType)) { |
| 182 | return stack; |
| 183 | } |
| 184 | } |
| 185 | return null; |
| 186 | } |
| 187 | |
| 188 | @VisibleForTesting |
| 189 | ActivityStack getTopStack() { |
| 190 | final int count = getChildCount(); |
| 191 | return count > 0 ? getChildAt(count - 1) : null; |
| 192 | } |
| 193 | |
Wale Ogunwale | 0db64ac | 2020-04-11 10:00:42 -0700 | [diff] [blame] | 194 | // TODO: Figure-out a way to remove since it might be a source of confusion. |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 195 | int getIndexOf(ActivityStack stack) { |
| 196 | return mChildren.indexOf(stack); |
| 197 | } |
| 198 | |
| 199 | ActivityStack getRootHomeTask() { |
| 200 | return mRootHomeTask; |
| 201 | } |
| 202 | |
| 203 | ActivityStack getRootPinnedTask() { |
| 204 | return mRootPinnedTask; |
| 205 | } |
| 206 | |
| 207 | ActivityStack getRootSplitScreenPrimaryTask() { |
| 208 | return mRootSplitScreenPrimaryTask; |
| 209 | } |
| 210 | |
| 211 | ArrayList<Task> getVisibleTasks() { |
| 212 | final ArrayList<Task> visibleTasks = new ArrayList<>(); |
| 213 | forAllTasks(task -> { |
| 214 | if (task.isLeafTask() && task.isVisible()) { |
| 215 | visibleTasks.add(task); |
| 216 | } |
| 217 | }); |
| 218 | return visibleTasks; |
| 219 | } |
| 220 | |
| 221 | void onStackWindowingModeChanged(ActivityStack stack) { |
| 222 | removeStackReferenceIfNeeded(stack); |
| 223 | addStackReferenceIfNeeded(stack); |
| 224 | if (stack == mRootPinnedTask && getTopStack() != stack) { |
| 225 | // Looks like this stack changed windowing mode to pinned. Move it to the top. |
| 226 | positionChildAt(POSITION_TOP, stack, false /* includingParents */); |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | void addStackReferenceIfNeeded(ActivityStack stack) { |
| 231 | if (stack.isActivityTypeHome()) { |
| 232 | if (mRootHomeTask != null) { |
| 233 | if (!stack.isDescendantOf(mRootHomeTask)) { |
| 234 | throw new IllegalArgumentException("addStackReferenceIfNeeded: home stack=" |
| 235 | + mRootHomeTask + " already exist on display=" + this |
| 236 | + " stack=" + stack); |
| 237 | } |
| 238 | } else { |
| 239 | mRootHomeTask = stack; |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | if (!stack.isRootTask()) { |
| 244 | return; |
| 245 | } |
| 246 | final int windowingMode = stack.getWindowingMode(); |
| 247 | if (windowingMode == WINDOWING_MODE_PINNED) { |
| 248 | if (mRootPinnedTask != null) { |
| 249 | throw new IllegalArgumentException( |
| 250 | "addStackReferenceIfNeeded: pinned stack=" + mRootPinnedTask |
| 251 | + " already exist on display=" + this + " stack=" + stack); |
| 252 | } |
| 253 | mRootPinnedTask = stack; |
| 254 | } else if (windowingMode == WINDOWING_MODE_SPLIT_SCREEN_PRIMARY) { |
| 255 | if (mRootSplitScreenPrimaryTask != null) { |
| 256 | throw new IllegalArgumentException( |
| 257 | "addStackReferenceIfNeeded: split screen primary stack=" |
| 258 | + mRootSplitScreenPrimaryTask |
| 259 | + " already exist on display=" + this + " stack=" + stack); |
| 260 | } |
| 261 | mRootSplitScreenPrimaryTask = stack; |
| 262 | } |
| 263 | } |
| 264 | |
| 265 | void removeStackReferenceIfNeeded(ActivityStack stack) { |
| 266 | if (stack == mRootHomeTask) { |
| 267 | mRootHomeTask = null; |
| 268 | } else if (stack == mRootPinnedTask) { |
| 269 | mRootPinnedTask = null; |
| 270 | } else if (stack == mRootSplitScreenPrimaryTask) { |
| 271 | mRootSplitScreenPrimaryTask = null; |
| 272 | } |
| 273 | } |
| 274 | |
| 275 | @Override |
| 276 | void addChild(ActivityStack stack, int position) { |
Vishnu Nair | 7c8a247 | 2020-04-17 16:08:29 -0700 | [diff] [blame] | 277 | if (DEBUG_STACK) Slog.d(TAG_WM, "Set stack=" + stack + " on taskDisplayArea=" + this); |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 278 | addStackReferenceIfNeeded(stack); |
| 279 | position = findPositionForStack(position, stack, true /* adding */); |
| 280 | |
| 281 | super.addChild(stack, position); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 282 | mAtmService.updateSleepIfNeededLocked(); |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 283 | |
Vishnu Nair | 7c8a247 | 2020-04-17 16:08:29 -0700 | [diff] [blame] | 284 | positionStackAt(stack, position); |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 285 | } |
| 286 | |
| 287 | @Override |
| 288 | protected void removeChild(ActivityStack stack) { |
| 289 | super.removeChild(stack); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 290 | onStackRemoved(stack); |
| 291 | mAtmService.updateSleepIfNeededLocked(); |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 292 | removeStackReferenceIfNeeded(stack); |
| 293 | } |
| 294 | |
| 295 | @Override |
| 296 | boolean isOnTop() { |
| 297 | // Considered always on top |
| 298 | return true; |
| 299 | } |
| 300 | |
| 301 | @Override |
| 302 | void positionChildAt(int position, ActivityStack child, boolean includingParents) { |
| 303 | final boolean moveToTop = (position == POSITION_TOP || position == getChildCount()); |
| 304 | final boolean moveToBottom = (position == POSITION_BOTTOM || position == 0); |
| 305 | if (child.getWindowConfiguration().isAlwaysOnTop() && !moveToTop) { |
| 306 | // This stack is always-on-top, override the default behavior. |
| 307 | Slog.w(TAG_WM, "Ignoring move of always-on-top stack=" + this + " to bottom"); |
| 308 | |
| 309 | // Moving to its current position, as we must call super but we don't want to |
| 310 | // perform any meaningful action. |
| 311 | final int currentPosition = mChildren.indexOf(child); |
| 312 | super.positionChildAt(currentPosition, child, false /* includingParents */); |
| 313 | return; |
| 314 | } |
| 315 | // We don't allow untrusted display to top when task stack moves to top, |
| 316 | // until user tapping this display to change display position as top intentionally. |
| 317 | if (mDisplayContent.isUntrustedVirtualDisplay() && !getParent().isOnTop()) { |
| 318 | includingParents = false; |
| 319 | } |
| 320 | final int targetPosition = findPositionForStack(position, child, false /* adding */); |
| 321 | super.positionChildAt(targetPosition, child, false /* includingParents */); |
| 322 | |
| 323 | if (includingParents && (moveToTop || moveToBottom)) { |
| 324 | // The DisplayContent children do not re-order, but we still want to move the |
| 325 | // display of this stack container because the intention of positioning is to have |
| 326 | // higher z-order to gain focus. |
| 327 | mDisplayContent.positionDisplayAt(moveToTop ? POSITION_TOP : POSITION_BOTTOM, |
| 328 | true /* includingParents */); |
| 329 | } |
| 330 | |
| 331 | child.updateTaskMovement(moveToTop); |
| 332 | |
| 333 | mDisplayContent.setLayoutNeeded(); |
| 334 | } |
| 335 | |
| 336 | /** |
Galia Peycheva | 7ecd6ef | 2020-03-26 19:59:40 +0100 | [diff] [blame] | 337 | * Assigns a priority number to stack types. This priority defines an order between the types |
| 338 | * of stacks that are added to the task display area. |
| 339 | * |
| 340 | * Higher priority number indicates that the stack should have a higher z-order. |
| 341 | * |
| 342 | * @return the priority of the stack |
| 343 | */ |
| 344 | private int getPriority(ActivityStack stack) { |
| 345 | if (mAssistantOnTopOfDream && stack.isActivityTypeAssistant()) return 4; |
| 346 | if (stack.isActivityTypeDream()) return 3; |
| 347 | if (stack.inPinnedWindowingMode()) return 2; |
| 348 | if (stack.isAlwaysOnTop()) return 1; |
| 349 | return 0; |
| 350 | } |
| 351 | |
| 352 | private int findMinPositionForStack(ActivityStack stack) { |
| 353 | int minPosition = POSITION_BOTTOM; |
| 354 | for (int i = 0; i < mChildren.size(); ++i) { |
| 355 | if (getPriority(getStackAt(i)) < getPriority(stack)) { |
| 356 | minPosition = i; |
| 357 | } else { |
| 358 | break; |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | if (stack.isAlwaysOnTop()) { |
| 363 | // Since a stack could be repositioned while still being one of the children, we check |
| 364 | // if this always-on-top stack already exists and if so, set the minPosition to its |
| 365 | // previous position. |
| 366 | final int currentIndex = getIndexOf(stack); |
| 367 | if (currentIndex > minPosition) { |
| 368 | minPosition = currentIndex; |
| 369 | } |
| 370 | } |
| 371 | return minPosition; |
| 372 | } |
| 373 | |
| 374 | private int findMaxPositionForStack(ActivityStack stack) { |
| 375 | for (int i = mChildren.size() - 1; i >= 0; --i) { |
| 376 | final ActivityStack curr = getStackAt(i); |
| 377 | // Since a stack could be repositioned while still being one of the children, we check |
| 378 | // if 'curr' is the same stack and skip it if so |
| 379 | final boolean sameStack = curr == stack; |
| 380 | if (getPriority(curr) <= getPriority(stack) && !sameStack) { |
| 381 | return i; |
| 382 | } |
| 383 | } |
| 384 | return 0; |
| 385 | } |
| 386 | |
| 387 | /** |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 388 | * When stack is added or repositioned, find a proper position for it. |
Galia Peycheva | 7ecd6ef | 2020-03-26 19:59:40 +0100 | [diff] [blame] | 389 | * |
| 390 | * The order is defined as: |
| 391 | * - Dream is on top of everything |
| 392 | * - PiP is directly below the Dream |
| 393 | * - always-on-top stacks are directly below PiP; new always-on-top stacks are added above |
| 394 | * existing ones |
| 395 | * - other non-always-on-top stacks come directly below always-on-top stacks; new |
| 396 | * non-always-on-top stacks are added directly below always-on-top stacks and above existing |
| 397 | * non-always-on-top stacks |
| 398 | * - if {@link #mAssistantOnTopOfDream} is enabled, then Assistant is on top of everything |
| 399 | * (including the Dream); otherwise, it is a normal non-always-on-top stack |
| 400 | * |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 401 | * @param requestedPosition Position requested by caller. |
| 402 | * @param stack Stack to be added or positioned. |
| 403 | * @param adding Flag indicates whether we're adding a new stack or positioning an existing. |
| 404 | * @return The proper position for the stack. |
| 405 | */ |
Galia Peycheva | 7ecd6ef | 2020-03-26 19:59:40 +0100 | [diff] [blame] | 406 | private int findPositionForStack(int requestedPosition, ActivityStack stack, boolean adding) { |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 407 | // The max possible position we can insert the stack at. |
Galia Peycheva | 7ecd6ef | 2020-03-26 19:59:40 +0100 | [diff] [blame] | 408 | int maxPosition = findMaxPositionForStack(stack); |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 409 | // The min possible position we can insert the stack at. |
Galia Peycheva | 7ecd6ef | 2020-03-26 19:59:40 +0100 | [diff] [blame] | 410 | int minPosition = findMinPositionForStack(stack); |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 411 | |
| 412 | // Cap the requested position to something reasonable for the previous position check |
| 413 | // below. |
| 414 | if (requestedPosition == POSITION_TOP) { |
| 415 | requestedPosition = mChildren.size(); |
| 416 | } else if (requestedPosition == POSITION_BOTTOM) { |
| 417 | requestedPosition = 0; |
| 418 | } |
| 419 | |
| 420 | int targetPosition = requestedPosition; |
| 421 | targetPosition = Math.min(targetPosition, maxPosition); |
| 422 | targetPosition = Math.max(targetPosition, minPosition); |
| 423 | |
Andrii Kulian | 4c0fd0d | 2020-03-29 13:32:14 -0700 | [diff] [blame] | 424 | int prevPosition = mChildren.indexOf(stack); |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 425 | // The positions we calculated above (maxPosition, minPosition) do not take into |
| 426 | // consideration the following edge cases. |
| 427 | // 1) We need to adjust the position depending on the value "adding". |
| 428 | // 2) When we are moving a stack to another position, we also need to adjust the |
| 429 | // position depending on whether the stack is moving to a higher or lower position. |
| 430 | if ((targetPosition != requestedPosition) && (adding || targetPosition < prevPosition)) { |
| 431 | targetPosition++; |
| 432 | } |
| 433 | |
| 434 | return targetPosition; |
| 435 | } |
| 436 | |
| 437 | @Override |
| 438 | boolean forAllWindows(ToBooleanFunction<WindowState> callback, |
| 439 | boolean traverseTopToBottom) { |
| 440 | if (traverseTopToBottom) { |
| 441 | if (super.forAllWindows(callback, traverseTopToBottom)) { |
| 442 | return true; |
| 443 | } |
| 444 | if (forAllExitingAppTokenWindows(callback, traverseTopToBottom)) { |
| 445 | return true; |
| 446 | } |
| 447 | } else { |
| 448 | if (forAllExitingAppTokenWindows(callback, traverseTopToBottom)) { |
| 449 | return true; |
| 450 | } |
| 451 | if (super.forAllWindows(callback, traverseTopToBottom)) { |
| 452 | return true; |
| 453 | } |
| 454 | } |
| 455 | return false; |
| 456 | } |
| 457 | |
| 458 | private boolean forAllExitingAppTokenWindows(ToBooleanFunction<WindowState> callback, |
| 459 | boolean traverseTopToBottom) { |
| 460 | // For legacy reasons we process the TaskStack.mExitingActivities first here before the |
| 461 | // app tokens. |
| 462 | // TODO: Investigate if we need to continue to do this or if we can just process them |
| 463 | // in-order. |
| 464 | if (traverseTopToBottom) { |
| 465 | for (int i = mChildren.size() - 1; i >= 0; --i) { |
| 466 | final List<ActivityRecord> activities = mChildren.get(i).mExitingActivities; |
| 467 | for (int j = activities.size() - 1; j >= 0; --j) { |
| 468 | if (activities.get(j).forAllWindowsUnchecked(callback, |
| 469 | traverseTopToBottom)) { |
| 470 | return true; |
| 471 | } |
| 472 | } |
| 473 | } |
| 474 | } else { |
| 475 | final int count = mChildren.size(); |
| 476 | for (int i = 0; i < count; ++i) { |
| 477 | final List<ActivityRecord> activities = mChildren.get(i).mExitingActivities; |
| 478 | final int appTokensCount = activities.size(); |
| 479 | for (int j = 0; j < appTokensCount; j++) { |
| 480 | if (activities.get(j).forAllWindowsUnchecked(callback, |
| 481 | traverseTopToBottom)) { |
| 482 | return true; |
| 483 | } |
| 484 | } |
| 485 | } |
| 486 | } |
| 487 | return false; |
| 488 | } |
| 489 | |
| 490 | void setExitingTokensHasVisible(boolean hasVisible) { |
| 491 | for (int i = mChildren.size() - 1; i >= 0; --i) { |
| 492 | final ArrayList<ActivityRecord> activities = mChildren.get(i).mExitingActivities; |
| 493 | for (int j = activities.size() - 1; j >= 0; --j) { |
| 494 | activities.get(j).hasVisible = hasVisible; |
| 495 | } |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | void removeExistingAppTokensIfPossible() { |
| 500 | for (int i = mChildren.size() - 1; i >= 0; --i) { |
| 501 | final ArrayList<ActivityRecord> activities = mChildren.get(i).mExitingActivities; |
| 502 | for (int j = activities.size() - 1; j >= 0; --j) { |
| 503 | final ActivityRecord activity = activities.get(j); |
| 504 | if (!activity.hasVisible && !mDisplayContent.mClosingApps.contains(activity) |
| 505 | && (!activity.mIsExiting || activity.isEmpty())) { |
| 506 | // Make sure there is no animation running on this activity, so any windows |
| 507 | // associated with it will be removed as soon as their animations are |
| 508 | // complete. |
| 509 | cancelAnimation(); |
| 510 | ProtoLog.v(WM_DEBUG_ADD_REMOVE, |
| 511 | "performLayout: Activity exiting now removed %s", activity); |
| 512 | activity.removeIfPossible(); |
| 513 | } |
| 514 | } |
| 515 | } |
| 516 | } |
| 517 | |
| 518 | @Override |
| 519 | int getOrientation(int candidate) { |
Andrii Kulian | 4c0fd0d | 2020-03-29 13:32:14 -0700 | [diff] [blame] | 520 | if (isStackVisible(WINDOWING_MODE_SPLIT_SCREEN_PRIMARY)) { |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 521 | // Apps and their containers are not allowed to specify an orientation while using |
| 522 | // root tasks...except for the home stack if it is not resizable and currently |
| 523 | // visible (top of) its root task. |
| 524 | if (mRootHomeTask != null && mRootHomeTask.isVisible()) { |
| 525 | final Task topMost = mRootHomeTask.getTopMostTask(); |
| 526 | final boolean resizable = topMost != null && topMost.isResizeable(); |
| 527 | if (!(resizable && mRootHomeTask.matchParentBounds())) { |
| 528 | final int orientation = mRootHomeTask.getOrientation(); |
| 529 | if (orientation != SCREEN_ORIENTATION_UNSET) { |
| 530 | return orientation; |
| 531 | } |
| 532 | } |
| 533 | } |
| 534 | return SCREEN_ORIENTATION_UNSPECIFIED; |
| 535 | } |
| 536 | |
| 537 | final int orientation = super.getOrientation(candidate); |
| 538 | if (orientation != SCREEN_ORIENTATION_UNSET |
| 539 | && orientation != SCREEN_ORIENTATION_BEHIND) { |
| 540 | ProtoLog.v(WM_DEBUG_ORIENTATION, |
| 541 | "App is requesting an orientation, return %d for display id=%d", |
| 542 | orientation, mDisplayContent.mDisplayId); |
| 543 | return orientation; |
| 544 | } |
| 545 | |
| 546 | ProtoLog.v(WM_DEBUG_ORIENTATION, |
| 547 | "No app is requesting an orientation, return %d for display id=%d", |
| 548 | mDisplayContent.getLastOrientation(), mDisplayContent.mDisplayId); |
| 549 | // The next app has not been requested to be visible, so we keep the current orientation |
| 550 | // to prevent freezing/unfreezing the display too early. |
| 551 | return mDisplayContent.getLastOrientation(); |
| 552 | } |
| 553 | |
| 554 | @Override |
| 555 | void assignChildLayers(SurfaceControl.Transaction t) { |
| 556 | assignStackOrdering(t); |
| 557 | |
| 558 | for (int i = 0; i < mChildren.size(); i++) { |
| 559 | final ActivityStack s = mChildren.get(i); |
| 560 | s.assignChildLayers(t); |
| 561 | } |
| 562 | } |
| 563 | |
| 564 | void assignStackOrdering(SurfaceControl.Transaction t) { |
| 565 | if (getParent() == null) { |
| 566 | return; |
| 567 | } |
| 568 | mTmpAlwaysOnTopStacks.clear(); |
| 569 | mTmpHomeStacks.clear(); |
| 570 | mTmpNormalStacks.clear(); |
| 571 | for (int i = 0; i < mChildren.size(); ++i) { |
| 572 | final ActivityStack s = mChildren.get(i); |
| 573 | if (s.isAlwaysOnTop()) { |
| 574 | mTmpAlwaysOnTopStacks.add(s); |
| 575 | } else if (s.isActivityTypeHome()) { |
| 576 | mTmpHomeStacks.add(s); |
| 577 | } else { |
| 578 | mTmpNormalStacks.add(s); |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | int layer = 0; |
| 583 | // Place home stacks to the bottom. |
| 584 | for (int i = 0; i < mTmpHomeStacks.size(); i++) { |
| 585 | mTmpHomeStacks.get(i).assignLayer(t, layer++); |
| 586 | } |
| 587 | // The home animation layer is between the home stacks and the normal stacks. |
| 588 | final int layerForHomeAnimationLayer = layer++; |
| 589 | int layerForSplitScreenDividerAnchor = layer++; |
| 590 | int layerForAnimationLayer = layer++; |
| 591 | for (int i = 0; i < mTmpNormalStacks.size(); i++) { |
| 592 | final ActivityStack s = mTmpNormalStacks.get(i); |
| 593 | s.assignLayer(t, layer++); |
| 594 | if (s.inSplitScreenWindowingMode()) { |
| 595 | // The split screen divider anchor is located above the split screen window. |
| 596 | layerForSplitScreenDividerAnchor = layer++; |
| 597 | } |
| 598 | if (s.isTaskAnimating() || s.isAppTransitioning()) { |
| 599 | // The animation layer is located above the highest animating stack and no |
| 600 | // higher. |
| 601 | layerForAnimationLayer = layer++; |
| 602 | } |
| 603 | } |
| 604 | // The boosted animation layer is between the normal stacks and the always on top |
| 605 | // stacks. |
| 606 | final int layerForBoostedAnimationLayer = layer++; |
| 607 | for (int i = 0; i < mTmpAlwaysOnTopStacks.size(); i++) { |
| 608 | mTmpAlwaysOnTopStacks.get(i).assignLayer(t, layer++); |
| 609 | } |
| 610 | |
| 611 | t.setLayer(mHomeAppAnimationLayer, layerForHomeAnimationLayer); |
| 612 | t.setLayer(mAppAnimationLayer, layerForAnimationLayer); |
| 613 | t.setLayer(mSplitScreenDividerAnchor, layerForSplitScreenDividerAnchor); |
| 614 | t.setLayer(mBoostedAppAnimationLayer, layerForBoostedAnimationLayer); |
| 615 | } |
| 616 | |
| 617 | @Override |
| 618 | SurfaceControl getAppAnimationLayer(@AnimationLayer int animationLayer) { |
| 619 | switch (animationLayer) { |
| 620 | case ANIMATION_LAYER_BOOSTED: |
| 621 | return mBoostedAppAnimationLayer; |
| 622 | case ANIMATION_LAYER_HOME: |
| 623 | return mHomeAppAnimationLayer; |
| 624 | case ANIMATION_LAYER_STANDARD: |
| 625 | default: |
| 626 | return mAppAnimationLayer; |
| 627 | } |
| 628 | } |
| 629 | |
| 630 | SurfaceControl getSplitScreenDividerAnchor() { |
| 631 | return mSplitScreenDividerAnchor; |
| 632 | } |
| 633 | |
| 634 | @Override |
| 635 | void onParentChanged(ConfigurationContainer newParent, ConfigurationContainer oldParent) { |
| 636 | if (getParent() != null) { |
| 637 | super.onParentChanged(newParent, oldParent, () -> { |
| 638 | mAppAnimationLayer = makeChildSurface(null) |
| 639 | .setName("animationLayer") |
| 640 | .build(); |
| 641 | mBoostedAppAnimationLayer = makeChildSurface(null) |
| 642 | .setName("boostedAnimationLayer") |
| 643 | .build(); |
| 644 | mHomeAppAnimationLayer = makeChildSurface(null) |
| 645 | .setName("homeAnimationLayer") |
| 646 | .build(); |
| 647 | mSplitScreenDividerAnchor = makeChildSurface(null) |
| 648 | .setName("splitScreenDividerAnchor") |
| 649 | .build(); |
| 650 | getPendingTransaction() |
| 651 | .show(mAppAnimationLayer) |
| 652 | .show(mBoostedAppAnimationLayer) |
| 653 | .show(mHomeAppAnimationLayer) |
| 654 | .show(mSplitScreenDividerAnchor); |
| 655 | }); |
| 656 | } else { |
| 657 | super.onParentChanged(newParent, oldParent); |
| 658 | mWmService.mTransactionFactory.get() |
| 659 | .remove(mAppAnimationLayer) |
| 660 | .remove(mBoostedAppAnimationLayer) |
| 661 | .remove(mHomeAppAnimationLayer) |
| 662 | .remove(mSplitScreenDividerAnchor) |
| 663 | .apply(); |
| 664 | mAppAnimationLayer = null; |
| 665 | mBoostedAppAnimationLayer = null; |
| 666 | mHomeAppAnimationLayer = null; |
| 667 | mSplitScreenDividerAnchor = null; |
| 668 | } |
| 669 | } |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 670 | |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 671 | void onStackRemoved(ActivityStack stack) { |
| 672 | if (ActivityTaskManagerDebugConfig.DEBUG_STACK) { |
| 673 | Slog.v(TAG_STACK, "removeStack: detaching " + stack + " from displayId=" |
| 674 | + mDisplayContent.mDisplayId); |
| 675 | } |
| 676 | if (mPreferredTopFocusableStack == stack) { |
| 677 | mPreferredTopFocusableStack = null; |
| 678 | } |
| 679 | mDisplayContent.releaseSelfIfNeeded(); |
Andrii Kulian | 4c0fd0d | 2020-03-29 13:32:14 -0700 | [diff] [blame] | 680 | onStackOrderChanged(stack); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 681 | } |
| 682 | |
Winson Chung | b5ce37c | 2020-04-22 10:08:28 -0700 | [diff] [blame] | 683 | void resetPreferredTopFocusableStackIfBelow(Task task) { |
| 684 | if (mPreferredTopFocusableStack != null |
| 685 | && mPreferredTopFocusableStack.compareTo(task) < 0) { |
| 686 | mPreferredTopFocusableStack = null; |
| 687 | } |
| 688 | } |
| 689 | |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 690 | void positionStackAt(int position, ActivityStack child, boolean includingParents) { |
| 691 | positionChildAt(position, child, includingParents); |
| 692 | mDisplayContent.layoutAndAssignWindowLayersIfNeeded(); |
| 693 | } |
| 694 | |
| 695 | void positionStackAtTop(ActivityStack stack, boolean includingParents) { |
| 696 | positionStackAtTop(stack, includingParents, null /* updateLastFocusedStackReason */); |
| 697 | } |
| 698 | |
| 699 | void positionStackAtTop(ActivityStack stack, boolean includingParents, |
| 700 | String updateLastFocusedStackReason) { |
| 701 | positionStackAt(stack, getStackCount(), includingParents, |
| 702 | updateLastFocusedStackReason); |
| 703 | } |
| 704 | |
| 705 | void positionStackAtBottom(ActivityStack stack) { |
| 706 | positionStackAtBottom(stack, null /* updateLastFocusedStackReason */); |
| 707 | } |
| 708 | |
| 709 | void positionStackAtBottom(ActivityStack stack, String updateLastFocusedStackReason) { |
| 710 | positionStackAt(stack, 0, false /* includingParents */, |
| 711 | updateLastFocusedStackReason); |
| 712 | } |
| 713 | |
| 714 | void positionStackAt(ActivityStack stack, int position) { |
| 715 | positionStackAt(stack, position, false /* includingParents */, |
| 716 | null /* updateLastFocusedStackReason */); |
| 717 | } |
| 718 | |
| 719 | void positionStackAt(ActivityStack stack, int position, boolean includingParents, |
| 720 | String updateLastFocusedStackReason) { |
| 721 | // TODO: Keep in sync with WindowContainer.positionChildAt(), once we change that to adjust |
| 722 | // the position internally, also update the logic here |
| 723 | final ActivityStack prevFocusedStack = updateLastFocusedStackReason != null |
| 724 | ? getFocusedStack() : null; |
Wale Ogunwale | 0db64ac | 2020-04-11 10:00:42 -0700 | [diff] [blame] | 725 | final boolean wasContained = mChildren.contains(stack); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 726 | if (mDisplayContent.mSingleTaskInstance && getStackCount() == 1 && !wasContained) { |
| 727 | throw new IllegalStateException( |
| 728 | "positionStackAt: Can only have one task on display=" + this); |
| 729 | } |
| 730 | |
| 731 | final boolean movingToTop = wasContained && position >= getStackCount() - 1; |
| 732 | // Reset mPreferredTopFocusableStack before positioning to top or {@link |
| 733 | // ActivityStackSupervisor#updateTopResumedActivityIfNeeded()} won't update the top |
| 734 | // resumed activity. |
| 735 | if (movingToTop && stack.isFocusable()) { |
| 736 | mPreferredTopFocusableStack = null; |
| 737 | } |
| 738 | |
| 739 | // Since positionChildAt() is called during the creation process of pinned stacks, |
| 740 | // ActivityStack#getStack() can be null. |
| 741 | positionStackAt(position, stack, includingParents); |
| 742 | |
| 743 | // The insert position may be adjusted to non-top when there is always-on-top stack. Since |
| 744 | // the original position is preferred to be top, the stack should have higher priority when |
| 745 | // we are looking for top focusable stack. The condition {@code wasContained} restricts the |
| 746 | // preferred stack is set only when moving an existing stack to top instead of adding a new |
| 747 | // stack that may be too early (e.g. in the middle of launching or reparenting). |
| 748 | if (movingToTop && stack.isFocusableAndVisible()) { |
| 749 | mPreferredTopFocusableStack = stack; |
| 750 | } else if (mPreferredTopFocusableStack == stack) { |
| 751 | mPreferredTopFocusableStack = null; |
| 752 | } |
| 753 | |
| 754 | if (updateLastFocusedStackReason != null) { |
| 755 | final ActivityStack currentFocusedStack = getFocusedStack(); |
| 756 | if (currentFocusedStack != prevFocusedStack) { |
| 757 | mLastFocusedStack = prevFocusedStack; |
| 758 | EventLogTags.writeWmFocusedStack(mRootWindowContainer.mCurrentUser, |
| 759 | mDisplayContent.mDisplayId, |
| 760 | currentFocusedStack == null ? -1 : currentFocusedStack.getRootTaskId(), |
| 761 | mLastFocusedStack == null ? -1 : mLastFocusedStack.getRootTaskId(), |
| 762 | updateLastFocusedStackReason); |
| 763 | } |
| 764 | } |
| 765 | |
Andrii Kulian | 4c0fd0d | 2020-03-29 13:32:14 -0700 | [diff] [blame] | 766 | onStackOrderChanged(stack); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 767 | } |
| 768 | |
| 769 | ActivityStack getStack(int rootTaskId) { |
| 770 | for (int i = getStackCount() - 1; i >= 0; --i) { |
| 771 | final ActivityStack stack = getStackAt(i); |
| 772 | if (stack.getRootTaskId() == rootTaskId) { |
| 773 | return stack; |
| 774 | } |
| 775 | } |
| 776 | return null; |
| 777 | } |
| 778 | |
| 779 | /** |
| 780 | * Returns an existing stack compatible with the windowing mode and activity type or creates one |
| 781 | * if a compatible stack doesn't exist. |
Wale Ogunwale | c27e1ac | 2020-03-31 13:18:47 -0700 | [diff] [blame] | 782 | * @see #getOrCreateStack(int, int, boolean, Intent, Task) |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 783 | */ |
| 784 | ActivityStack getOrCreateStack(int windowingMode, int activityType, boolean onTop) { |
| 785 | return getOrCreateStack(windowingMode, activityType, onTop, null /* intent */, |
Wale Ogunwale | c27e1ac | 2020-03-31 13:18:47 -0700 | [diff] [blame] | 786 | null /* candidateTask */); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 787 | } |
| 788 | |
| 789 | /** |
| 790 | * When two level tasks are required for given windowing mode and activity type, returns an |
| 791 | * existing compatible root task or creates a new one. |
| 792 | * For one level task, the candidate task would be reused to also be the root task or create |
| 793 | * a new root task if no candidate task. |
| 794 | * @see #getStack(int, int) |
| 795 | * @see #createStack(int, int, boolean) |
| 796 | */ |
| 797 | ActivityStack getOrCreateStack(int windowingMode, int activityType, boolean onTop, |
Wale Ogunwale | c27e1ac | 2020-03-31 13:18:47 -0700 | [diff] [blame] | 798 | Intent intent, Task candidateTask) { |
Louis Chang | 6c5d725 | 2020-03-30 15:42:01 +0800 | [diff] [blame] | 799 | // Need to pass in a determined windowing mode to see if a new stack should be created, |
| 800 | // so use its parent's windowing mode if it is undefined. |
| 801 | if (!alwaysCreateStack( |
| 802 | windowingMode != WINDOWING_MODE_UNDEFINED ? windowingMode : getWindowingMode(), |
| 803 | activityType)) { |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 804 | ActivityStack stack = getStack(windowingMode, activityType); |
| 805 | if (stack != null) { |
| 806 | return stack; |
| 807 | } |
| 808 | } else if (candidateTask != null) { |
| 809 | final ActivityStack stack = (ActivityStack) candidateTask; |
| 810 | final int position = onTop ? POSITION_TOP : POSITION_BOTTOM; |
Wale Ogunwale | c27e1ac | 2020-03-31 13:18:47 -0700 | [diff] [blame] | 811 | Task launchRootTask = updateLaunchRootTask(windowingMode); |
| 812 | |
| 813 | if (launchRootTask != null) { |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 814 | if (stack.getParent() == null) { |
Wale Ogunwale | c27e1ac | 2020-03-31 13:18:47 -0700 | [diff] [blame] | 815 | launchRootTask.addChild(stack, position); |
| 816 | } else if (stack.getParent() != launchRootTask) { |
| 817 | stack.reparent(launchRootTask, position); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 818 | } |
Andrii Kulian | 4c0fd0d | 2020-03-29 13:32:14 -0700 | [diff] [blame] | 819 | } else if (stack.getDisplayArea() != this || !stack.isRootTask()) { |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 820 | if (stack.getParent() == null) { |
Vishnu Nair | 7c8a247 | 2020-04-17 16:08:29 -0700 | [diff] [blame] | 821 | addChild(stack, position); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 822 | } else { |
Andrii Kulian | 4c0fd0d | 2020-03-29 13:32:14 -0700 | [diff] [blame] | 823 | stack.reparent(this, onTop); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 824 | } |
| 825 | } |
| 826 | // Update windowing mode if necessary, e.g. moving a pinned task to fullscreen. |
| 827 | if (candidateTask.getWindowingMode() != windowingMode) { |
| 828 | candidateTask.setWindowingMode(windowingMode); |
| 829 | } |
| 830 | return stack; |
| 831 | } |
| 832 | return createStack(windowingMode, activityType, onTop, null /*info*/, intent, |
Wale Ogunwale | c27e1ac | 2020-03-31 13:18:47 -0700 | [diff] [blame] | 833 | false /* createdByOrganizer */); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 834 | } |
| 835 | |
| 836 | /** |
| 837 | * Returns an existing stack compatible with the input params or creates one |
| 838 | * if a compatible stack doesn't exist. |
| 839 | * @see #getOrCreateStack(int, int, boolean) |
| 840 | */ |
| 841 | ActivityStack getOrCreateStack(@Nullable ActivityRecord r, |
| 842 | @Nullable ActivityOptions options, @Nullable Task candidateTask, int activityType, |
| 843 | boolean onTop) { |
| 844 | // First preference is the windowing mode in the activity options if set. |
| 845 | int windowingMode = (options != null) |
| 846 | ? options.getLaunchWindowingMode() : WINDOWING_MODE_UNDEFINED; |
| 847 | // Validate that our desired windowingMode will work under the current conditions. |
| 848 | // UNDEFINED windowing mode is a valid result and means that the new stack will inherit |
| 849 | // it's display's windowing mode. |
| 850 | windowingMode = validateWindowingMode(windowingMode, r, candidateTask, activityType); |
| 851 | return getOrCreateStack(windowingMode, activityType, onTop, null /* intent */, |
Wale Ogunwale | c27e1ac | 2020-03-31 13:18:47 -0700 | [diff] [blame] | 852 | candidateTask); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 853 | } |
| 854 | |
| 855 | @VisibleForTesting |
| 856 | int getNextStackId() { |
| 857 | return mAtmService.mStackSupervisor.getNextTaskIdForUser(); |
| 858 | } |
| 859 | |
| 860 | ActivityStack createStack(int windowingMode, int activityType, boolean onTop) { |
| 861 | return createStack(windowingMode, activityType, onTop, null /* info */, null /* intent */, |
| 862 | false /* createdByOrganizer */); |
| 863 | } |
| 864 | |
| 865 | /** |
| 866 | * Creates a stack matching the input windowing mode and activity type on this display. |
| 867 | * @param windowingMode The windowing mode the stack should be created in. If |
| 868 | * {@link WindowConfiguration#WINDOWING_MODE_UNDEFINED} then the stack will |
| 869 | * inherit its parent's windowing mode. |
| 870 | * @param activityType The activityType the stack should be created in. If |
| 871 | * {@link WindowConfiguration#ACTIVITY_TYPE_UNDEFINED} then the stack will |
| 872 | * be created in {@link WindowConfiguration#ACTIVITY_TYPE_STANDARD}. |
| 873 | * @param onTop If true the stack will be created at the top of the display, else at the bottom. |
| 874 | * @param info The started activity info. |
| 875 | * @param intent The intent that started this task. |
| 876 | * @param createdByOrganizer @{code true} if this is created by task organizer, @{code false} |
| 877 | * otherwise. |
| 878 | * @return The newly created stack. |
| 879 | */ |
| 880 | ActivityStack createStack(int windowingMode, int activityType, boolean onTop, ActivityInfo info, |
| 881 | Intent intent, boolean createdByOrganizer) { |
| 882 | if (mDisplayContent.mSingleTaskInstance && getStackCount() > 0) { |
| 883 | // Create stack on default display instead since this display can only contain 1 stack. |
| 884 | // TODO: Kinda a hack, but better that having the decision at each call point. Hoping |
| 885 | // this goes away once ActivityView is no longer using virtual displays. |
Andrii Kulian | 4c0fd0d | 2020-03-29 13:32:14 -0700 | [diff] [blame] | 886 | return mRootWindowContainer.getDefaultTaskDisplayArea().createStack( |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 887 | windowingMode, activityType, onTop, info, intent, createdByOrganizer); |
| 888 | } |
| 889 | |
| 890 | if (activityType == ACTIVITY_TYPE_UNDEFINED && !createdByOrganizer) { |
| 891 | // Can't have an undefined stack type yet...so re-map to standard. Anyone that wants |
| 892 | // anything else should be passing it in anyways...except for the task organizer. |
| 893 | activityType = ACTIVITY_TYPE_STANDARD; |
| 894 | } |
| 895 | |
| 896 | if (activityType != ACTIVITY_TYPE_STANDARD && activityType != ACTIVITY_TYPE_UNDEFINED) { |
| 897 | // For now there can be only one stack of a particular non-standard activity type on a |
| 898 | // display. So, get that ignoring whatever windowing mode it is currently in. |
| 899 | ActivityStack stack = getStack(WINDOWING_MODE_UNDEFINED, activityType); |
| 900 | if (stack != null) { |
| 901 | throw new IllegalArgumentException("Stack=" + stack + " of activityType=" |
| 902 | + activityType + " already on display=" + this + ". Can't have multiple."); |
| 903 | } |
| 904 | } |
| 905 | |
| 906 | if (!isWindowingModeSupported(windowingMode, mAtmService.mSupportsMultiWindow, |
| 907 | mAtmService.mSupportsSplitScreenMultiWindow, |
| 908 | mAtmService.mSupportsFreeformWindowManagement, |
| 909 | mAtmService.mSupportsPictureInPicture, activityType)) { |
| 910 | throw new IllegalArgumentException("Can't create stack for unsupported windowingMode=" |
| 911 | + windowingMode); |
| 912 | } |
| 913 | |
Evan Rosky | 688c838 | 2020-04-03 17:27:08 -0700 | [diff] [blame] | 914 | if (windowingMode == WINDOWING_MODE_PINNED && getRootPinnedTask() != null) { |
| 915 | // Only 1 stack can be PINNED at a time, so dismiss the existing one |
| 916 | getRootPinnedTask().dismissPip(); |
| 917 | } |
| 918 | |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 919 | final int stackId = getNextStackId(); |
| 920 | return createStackUnchecked(windowingMode, activityType, stackId, onTop, info, intent, |
| 921 | createdByOrganizer); |
| 922 | } |
| 923 | |
| 924 | /** @return the root task to create the next task in. */ |
| 925 | private Task updateLaunchRootTask(int windowingMode) { |
| 926 | if (!isSplitScreenWindowingMode(windowingMode)) { |
| 927 | // Only split-screen windowing modes can do this currently... |
| 928 | return null; |
| 929 | } |
| 930 | for (int i = getStackCount() - 1; i >= 0; --i) { |
| 931 | final Task t = getStackAt(i); |
| 932 | if (!t.mCreatedByOrganizer || t.getRequestedOverrideWindowingMode() != windowingMode) { |
| 933 | continue; |
| 934 | } |
| 935 | // If not already set, pick a launch root which is not the one we are launching into. |
| 936 | if (mLaunchRootTask == null) { |
| 937 | for (int j = 0, n = getStackCount(); j < n; ++j) { |
| 938 | final Task tt = getStackAt(j); |
| 939 | if (tt.mCreatedByOrganizer && tt != t) { |
| 940 | mLaunchRootTask = tt; |
| 941 | break; |
| 942 | } |
| 943 | } |
| 944 | } |
| 945 | return t; |
| 946 | } |
| 947 | return mLaunchRootTask; |
| 948 | } |
| 949 | |
| 950 | @VisibleForTesting |
| 951 | ActivityStack createStackUnchecked(int windowingMode, int activityType, int stackId, |
| 952 | boolean onTop, ActivityInfo info, Intent intent, boolean createdByOrganizer) { |
| 953 | if (windowingMode == WINDOWING_MODE_PINNED && activityType != ACTIVITY_TYPE_STANDARD) { |
| 954 | throw new IllegalArgumentException("Stack with windowing mode cannot with non standard " |
| 955 | + "activity type."); |
| 956 | } |
| 957 | if (info == null) { |
| 958 | info = new ActivityInfo(); |
| 959 | info.applicationInfo = new ApplicationInfo(); |
| 960 | } |
| 961 | |
| 962 | // Task created by organizer are added as root. |
| 963 | Task launchRootTask = createdByOrganizer ? null : updateLaunchRootTask(windowingMode); |
| 964 | if (launchRootTask != null) { |
| 965 | // Since this stack will be put into a root task, its windowingMode will be inherited. |
| 966 | windowingMode = WINDOWING_MODE_UNDEFINED; |
| 967 | } |
| 968 | |
Garfield Tan | 5044a15 | 2020-05-01 14:13:35 -0700 | [diff] [blame] | 969 | final ActivityStack stack = new ActivityStack(mAtmService, stackId, activityType, |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 970 | info, intent, createdByOrganizer); |
| 971 | if (launchRootTask != null) { |
| 972 | launchRootTask.addChild(stack, onTop ? POSITION_TOP : POSITION_BOTTOM); |
| 973 | if (onTop) { |
| 974 | positionStackAtTop((ActivityStack) launchRootTask, false /* includingParents */); |
| 975 | } |
| 976 | } else { |
Vishnu Nair | 7c8a247 | 2020-04-17 16:08:29 -0700 | [diff] [blame] | 977 | addChild(stack, onTop ? POSITION_TOP : POSITION_BOTTOM); |
Evan Rosky | 50ea8c1 | 2020-04-02 20:49:05 -0700 | [diff] [blame] | 978 | stack.setWindowingMode(windowingMode, true /* creating */); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 979 | } |
| 980 | return stack; |
| 981 | } |
| 982 | |
| 983 | /** |
| 984 | * Get the preferred focusable stack in priority. If the preferred stack does not exist, find a |
| 985 | * focusable and visible stack from the top of stacks in this display. |
| 986 | */ |
| 987 | ActivityStack getFocusedStack() { |
| 988 | if (mPreferredTopFocusableStack != null) { |
| 989 | return mPreferredTopFocusableStack; |
| 990 | } |
| 991 | |
| 992 | for (int i = getStackCount() - 1; i >= 0; --i) { |
| 993 | final ActivityStack stack = getStackAt(i); |
| 994 | if (stack.isFocusableAndVisible()) { |
| 995 | return stack; |
| 996 | } |
| 997 | } |
| 998 | |
| 999 | return null; |
| 1000 | } |
| 1001 | |
| 1002 | ActivityStack getNextFocusableStack(ActivityStack currentFocus, boolean ignoreCurrent) { |
| 1003 | final int currentWindowingMode = currentFocus != null |
| 1004 | ? currentFocus.getWindowingMode() : WINDOWING_MODE_UNDEFINED; |
| 1005 | |
| 1006 | ActivityStack candidate = null; |
| 1007 | for (int i = getStackCount() - 1; i >= 0; --i) { |
| 1008 | final ActivityStack stack = getStackAt(i); |
| 1009 | if (ignoreCurrent && stack == currentFocus) { |
| 1010 | continue; |
| 1011 | } |
| 1012 | if (!stack.isFocusableAndVisible()) { |
| 1013 | continue; |
| 1014 | } |
| 1015 | |
| 1016 | if (currentWindowingMode == WINDOWING_MODE_SPLIT_SCREEN_SECONDARY |
| 1017 | && candidate == null && stack.inSplitScreenPrimaryWindowingMode()) { |
| 1018 | // If the currently focused stack is in split-screen secondary we save off the |
| 1019 | // top primary split-screen stack as a candidate for focus because we might |
| 1020 | // prefer focus to move to an other stack to avoid primary split-screen stack |
| 1021 | // overlapping with a fullscreen stack when a fullscreen stack is higher in z |
| 1022 | // than the next split-screen stack. Assistant stack, I am looking at you... |
| 1023 | // We only move the focus to the primary-split screen stack if there isn't a |
| 1024 | // better alternative. |
| 1025 | candidate = stack; |
| 1026 | continue; |
| 1027 | } |
| 1028 | if (candidate != null && stack.inSplitScreenSecondaryWindowingMode()) { |
| 1029 | // Use the candidate stack since we are now at the secondary split-screen. |
| 1030 | return candidate; |
| 1031 | } |
| 1032 | return stack; |
| 1033 | } |
| 1034 | return candidate; |
| 1035 | } |
| 1036 | |
Andrii Kulian | f9df4a8 | 2020-03-31 12:09:27 -0700 | [diff] [blame] | 1037 | ActivityRecord getFocusedActivity() { |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1038 | final ActivityStack focusedStack = getFocusedStack(); |
| 1039 | if (focusedStack == null) { |
| 1040 | return null; |
| 1041 | } |
| 1042 | // TODO(b/111541062): Move this into ActivityStack#getResumedActivity() |
| 1043 | // Check if the focused stack has the resumed activity |
| 1044 | ActivityRecord resumedActivity = focusedStack.getResumedActivity(); |
| 1045 | if (resumedActivity == null || resumedActivity.app == null) { |
| 1046 | // If there is no registered resumed activity in the stack or it is not running - |
| 1047 | // try to use previously resumed one. |
| 1048 | resumedActivity = focusedStack.mPausingActivity; |
| 1049 | if (resumedActivity == null || resumedActivity.app == null) { |
| 1050 | // If previously resumed activity doesn't work either - find the topmost running |
| 1051 | // activity that can be focused. |
| 1052 | resumedActivity = focusedStack.topRunningActivity(true /* focusableOnly */); |
| 1053 | } |
| 1054 | } |
| 1055 | return resumedActivity; |
| 1056 | } |
| 1057 | |
| 1058 | ActivityStack getLastFocusedStack() { |
| 1059 | return mLastFocusedStack; |
| 1060 | } |
| 1061 | |
| 1062 | boolean allResumedActivitiesComplete() { |
| 1063 | for (int stackNdx = getStackCount() - 1; stackNdx >= 0; --stackNdx) { |
| 1064 | final ActivityRecord r = getStackAt(stackNdx).getResumedActivity(); |
| 1065 | if (r != null && !r.isState(RESUMED)) { |
| 1066 | return false; |
| 1067 | } |
| 1068 | } |
| 1069 | final ActivityStack currentFocusedStack = getFocusedStack(); |
| 1070 | if (ActivityTaskManagerDebugConfig.DEBUG_STACK) { |
| 1071 | Slog.d(TAG_STACK, "allResumedActivitiesComplete: mLastFocusedStack changing from=" |
| 1072 | + mLastFocusedStack + " to=" + currentFocusedStack); |
| 1073 | } |
| 1074 | mLastFocusedStack = currentFocusedStack; |
| 1075 | return true; |
| 1076 | } |
| 1077 | |
| 1078 | /** |
| 1079 | * Pause all activities in either all of the stacks or just the back stacks. This is done before |
| 1080 | * resuming a new activity and to make sure that previously active activities are |
| 1081 | * paused in stacks that are no longer visible or in pinned windowing mode. This does not |
| 1082 | * pause activities in visible stacks, so if an activity is launched within the same stack/task, |
| 1083 | * then we should explicitly pause that stack's top activity. |
| 1084 | * @param userLeaving Passed to pauseActivity() to indicate whether to call onUserLeaving(). |
| 1085 | * @param resuming The resuming activity. |
| 1086 | * @return {@code true} if any activity was paused as a result of this call. |
| 1087 | */ |
| 1088 | boolean pauseBackStacks(boolean userLeaving, ActivityRecord resuming) { |
| 1089 | boolean someActivityPaused = false; |
| 1090 | for (int stackNdx = getStackCount() - 1; stackNdx >= 0; --stackNdx) { |
| 1091 | final ActivityStack stack = getStackAt(stackNdx); |
| 1092 | final ActivityRecord resumedActivity = stack.getResumedActivity(); |
| 1093 | if (resumedActivity != null |
| 1094 | && (stack.getVisibility(resuming) != STACK_VISIBILITY_VISIBLE |
| 1095 | || !stack.isTopActivityFocusable())) { |
| 1096 | if (DEBUG_STATES) { |
| 1097 | Slog.d(TAG_STATES, "pauseBackStacks: stack=" + stack |
| 1098 | + " mResumedActivity=" + resumedActivity); |
| 1099 | } |
| 1100 | someActivityPaused |= stack.startPausingLocked(userLeaving, false /* uiSleeping*/, |
| 1101 | resuming); |
| 1102 | } |
| 1103 | } |
| 1104 | return someActivityPaused; |
| 1105 | } |
| 1106 | |
| 1107 | /** |
| 1108 | * Find task for putting the Activity in. |
| 1109 | */ |
Andrii Kulian | 1cb59dd | 2020-04-10 12:17:17 -0700 | [diff] [blame] | 1110 | void findTaskLocked(final ActivityRecord r, final boolean isPreferredDisplayArea, |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1111 | RootWindowContainer.FindTaskResult result) { |
| 1112 | mTmpFindTaskResult.clear(); |
| 1113 | for (int stackNdx = getStackCount() - 1; stackNdx >= 0; --stackNdx) { |
| 1114 | final ActivityStack stack = getStackAt(stackNdx); |
| 1115 | if (!r.hasCompatibleActivityType(stack) && stack.isLeafTask()) { |
| 1116 | if (DEBUG_TASKS) { |
| 1117 | Slog.d(TAG_TASKS, "Skipping stack: (mismatch activity/stack) " + stack); |
| 1118 | } |
| 1119 | continue; |
| 1120 | } |
| 1121 | |
| 1122 | mTmpFindTaskResult.process(r, stack); |
| 1123 | // It is possible to have tasks in multiple stacks with the same root affinity, so |
| 1124 | // we should keep looking after finding an affinity match to see if there is a |
| 1125 | // better match in another stack. Also, task affinity isn't a good enough reason |
| 1126 | // to target a display which isn't the source of the intent, so skip any affinity |
| 1127 | // matches not on the specified display. |
| 1128 | if (mTmpFindTaskResult.mRecord != null) { |
| 1129 | if (mTmpFindTaskResult.mIdealMatch) { |
| 1130 | result.setTo(mTmpFindTaskResult); |
| 1131 | return; |
Andrii Kulian | 1cb59dd | 2020-04-10 12:17:17 -0700 | [diff] [blame] | 1132 | } else if (isPreferredDisplayArea) { |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1133 | // Note: since the traversing through the stacks is top down, the floating |
| 1134 | // tasks should always have lower priority than any affinity-matching tasks |
| 1135 | // in the fullscreen stacks |
| 1136 | result.setTo(mTmpFindTaskResult); |
| 1137 | } |
| 1138 | } |
| 1139 | } |
| 1140 | } |
| 1141 | |
| 1142 | /** |
| 1143 | * Removes stacks in the input windowing modes from the system if they are of activity type |
| 1144 | * ACTIVITY_TYPE_STANDARD or ACTIVITY_TYPE_UNDEFINED |
| 1145 | */ |
| 1146 | void removeStacksInWindowingModes(int... windowingModes) { |
| 1147 | if (windowingModes == null || windowingModes.length == 0) { |
| 1148 | return; |
| 1149 | } |
| 1150 | |
| 1151 | // Collect the stacks that are necessary to be removed instead of performing the removal |
| 1152 | // by looping mStacks, so that we don't miss any stacks after the stack size changed or |
| 1153 | // stacks reordered. |
| 1154 | final ArrayList<ActivityStack> stacks = new ArrayList<>(); |
| 1155 | for (int j = windowingModes.length - 1; j >= 0; --j) { |
| 1156 | final int windowingMode = windowingModes[j]; |
| 1157 | for (int i = getStackCount() - 1; i >= 0; --i) { |
| 1158 | final ActivityStack stack = getStackAt(i); |
| 1159 | if (!stack.isActivityTypeStandardOrUndefined()) { |
| 1160 | continue; |
| 1161 | } |
| 1162 | if (stack.getWindowingMode() != windowingMode) { |
| 1163 | continue; |
| 1164 | } |
| 1165 | stacks.add(stack); |
| 1166 | } |
| 1167 | } |
| 1168 | |
| 1169 | for (int i = stacks.size() - 1; i >= 0; --i) { |
| 1170 | mRootWindowContainer.mStackSupervisor.removeStack(stacks.get(i)); |
| 1171 | } |
| 1172 | } |
| 1173 | |
| 1174 | void removeStacksWithActivityTypes(int... activityTypes) { |
| 1175 | if (activityTypes == null || activityTypes.length == 0) { |
| 1176 | return; |
| 1177 | } |
| 1178 | |
| 1179 | // Collect the stacks that are necessary to be removed instead of performing the removal |
| 1180 | // by looping mStacks, so that we don't miss any stacks after the stack size changed or |
| 1181 | // stacks reordered. |
| 1182 | final ArrayList<ActivityStack> stacks = new ArrayList<>(); |
| 1183 | for (int j = activityTypes.length - 1; j >= 0; --j) { |
| 1184 | final int activityType = activityTypes[j]; |
| 1185 | for (int i = getStackCount() - 1; i >= 0; --i) { |
| 1186 | final ActivityStack stack = getStackAt(i); |
| 1187 | // Collect the root tasks that are currently being organized. |
Evan Rosky | 50ea8c1 | 2020-04-02 20:49:05 -0700 | [diff] [blame] | 1188 | if (stack.mCreatedByOrganizer) { |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1189 | for (int k = stack.getChildCount() - 1; k >= 0; --k) { |
| 1190 | final ActivityStack childStack = (ActivityStack) stack.getChildAt(k); |
| 1191 | if (childStack.getActivityType() == activityType) { |
| 1192 | stacks.add(childStack); |
| 1193 | } |
| 1194 | } |
| 1195 | } else if (stack.getActivityType() == activityType) { |
| 1196 | stacks.add(stack); |
| 1197 | } |
| 1198 | } |
| 1199 | } |
| 1200 | |
| 1201 | for (int i = stacks.size() - 1; i >= 0; --i) { |
| 1202 | mRootWindowContainer.mStackSupervisor.removeStack(stacks.get(i)); |
| 1203 | } |
| 1204 | } |
| 1205 | |
| 1206 | void onSplitScreenModeDismissed() { |
Wale Ogunwale | fbb81c9 | 2020-04-09 18:01:24 -0700 | [diff] [blame] | 1207 | onSplitScreenModeDismissed(null /* toTop */); |
| 1208 | } |
| 1209 | |
| 1210 | void onSplitScreenModeDismissed(ActivityStack toTop) { |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1211 | mAtmService.deferWindowLayout(); |
| 1212 | try { |
| 1213 | mLaunchRootTask = null; |
| 1214 | moveSplitScreenTasksToFullScreen(); |
| 1215 | } finally { |
Wale Ogunwale | fbb81c9 | 2020-04-09 18:01:24 -0700 | [diff] [blame] | 1216 | final ActivityStack topFullscreenStack = toTop != null |
| 1217 | ? toTop : getTopStackInWindowingMode(WINDOWING_MODE_FULLSCREEN); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1218 | final ActivityStack homeStack = getOrCreateRootHomeTask(); |
Wale Ogunwale | fbb81c9 | 2020-04-09 18:01:24 -0700 | [diff] [blame] | 1219 | if (homeStack != null && ((topFullscreenStack != null && !isTopStack(homeStack)) |
| 1220 | || toTop != null)) { |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1221 | // Whenever split-screen is dismissed we want the home stack directly behind the |
| 1222 | // current top fullscreen stack so it shows up when the top stack is finished. |
Wale Ogunwale | fbb81c9 | 2020-04-09 18:01:24 -0700 | [diff] [blame] | 1223 | // Or, if the caller specified a stack to be on top after split-screen is dismissed. |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1224 | // TODO: Would be better to use ActivityDisplay.positionChildAt() for this, however |
| 1225 | // ActivityDisplay doesn't have a direct controller to WM side yet. We can switch |
| 1226 | // once we have that. |
| 1227 | homeStack.moveToFront("onSplitScreenModeDismissed"); |
| 1228 | topFullscreenStack.moveToFront("onSplitScreenModeDismissed"); |
| 1229 | } |
| 1230 | mAtmService.continueWindowLayout(); |
| 1231 | } |
| 1232 | } |
| 1233 | |
| 1234 | private void moveSplitScreenTasksToFullScreen() { |
| 1235 | final WindowContainerTransaction wct = new WindowContainerTransaction(); |
| 1236 | mTmpTasks.clear(); |
| 1237 | forAllTasks(task -> { |
| 1238 | if (task.mCreatedByOrganizer && task.inSplitScreenWindowingMode() && task.hasChild()) { |
| 1239 | mTmpTasks.add(task); |
| 1240 | } |
| 1241 | }); |
| 1242 | |
| 1243 | for (int i = mTmpTasks.size() - 1; i >= 0; i--) { |
| 1244 | final Task root = mTmpTasks.get(i); |
| 1245 | for (int j = 0; j < root.getChildCount(); j++) { |
Wale Ogunwale | adf116e | 2020-03-27 16:36:01 -0700 | [diff] [blame] | 1246 | wct.reparent(root.getChildAt(j).mRemoteToken.toWindowContainerToken(), |
| 1247 | null, true /* toTop */); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1248 | } |
| 1249 | } |
| 1250 | mAtmService.mWindowOrganizerController.applyTransaction(wct); |
| 1251 | } |
| 1252 | |
| 1253 | /** |
| 1254 | * Returns true if the {@param windowingMode} is supported based on other parameters passed in. |
| 1255 | * @param windowingMode The windowing mode we are checking support for. |
| 1256 | * @param supportsMultiWindow If we should consider support for multi-window mode in general. |
| 1257 | * @param supportsSplitScreen If we should consider support for split-screen multi-window. |
| 1258 | * @param supportsFreeform If we should consider support for freeform multi-window. |
| 1259 | * @param supportsPip If we should consider support for picture-in-picture mutli-window. |
| 1260 | * @param activityType The activity type under consideration. |
| 1261 | * @return true if the windowing mode is supported. |
| 1262 | */ |
| 1263 | private boolean isWindowingModeSupported(int windowingMode, boolean supportsMultiWindow, |
| 1264 | boolean supportsSplitScreen, boolean supportsFreeform, boolean supportsPip, |
| 1265 | int activityType) { |
| 1266 | |
| 1267 | if (windowingMode == WINDOWING_MODE_UNDEFINED |
| 1268 | || windowingMode == WINDOWING_MODE_FULLSCREEN) { |
| 1269 | return true; |
| 1270 | } |
| 1271 | if (!supportsMultiWindow) { |
| 1272 | return false; |
| 1273 | } |
| 1274 | |
| 1275 | if (windowingMode == WINDOWING_MODE_MULTI_WINDOW) { |
| 1276 | return true; |
| 1277 | } |
| 1278 | |
| 1279 | final int displayWindowingMode = getWindowingMode(); |
| 1280 | if (windowingMode == WINDOWING_MODE_SPLIT_SCREEN_PRIMARY |
| 1281 | || windowingMode == WINDOWING_MODE_SPLIT_SCREEN_SECONDARY) { |
| 1282 | return supportsSplitScreen |
| 1283 | && WindowConfiguration.supportSplitScreenWindowingMode(activityType) |
| 1284 | // Freeform windows and split-screen windows don't mix well, so prevent |
| 1285 | // split windowing modes on freeform displays. |
| 1286 | && displayWindowingMode != WINDOWING_MODE_FREEFORM; |
| 1287 | } |
| 1288 | |
| 1289 | if (!supportsFreeform && windowingMode == WINDOWING_MODE_FREEFORM) { |
| 1290 | return false; |
| 1291 | } |
| 1292 | |
| 1293 | if (!supportsPip && windowingMode == WINDOWING_MODE_PINNED) { |
| 1294 | return false; |
| 1295 | } |
| 1296 | return true; |
| 1297 | } |
| 1298 | |
| 1299 | /** |
| 1300 | * Resolves the windowing mode that an {@link ActivityRecord} would be in if started on this |
| 1301 | * display with the provided parameters. |
| 1302 | * |
| 1303 | * @param r The ActivityRecord in question. |
| 1304 | * @param options Options to start with. |
| 1305 | * @param task The task within-which the activity would start. |
| 1306 | * @param activityType The type of activity to start. |
| 1307 | * @return The resolved (not UNDEFINED) windowing-mode that the activity would be in. |
| 1308 | */ |
| 1309 | int resolveWindowingMode(@Nullable ActivityRecord r, @Nullable ActivityOptions options, |
| 1310 | @Nullable Task task, int activityType) { |
| 1311 | |
| 1312 | // First preference if the windowing mode in the activity options if set. |
| 1313 | int windowingMode = (options != null) |
| 1314 | ? options.getLaunchWindowingMode() : WINDOWING_MODE_UNDEFINED; |
| 1315 | |
| 1316 | // If windowing mode is unset, then next preference is the candidate task, then the |
| 1317 | // activity record. |
| 1318 | if (windowingMode == WINDOWING_MODE_UNDEFINED) { |
| 1319 | if (task != null) { |
| 1320 | windowingMode = task.getWindowingMode(); |
| 1321 | } |
| 1322 | if (windowingMode == WINDOWING_MODE_UNDEFINED && r != null) { |
| 1323 | windowingMode = r.getWindowingMode(); |
| 1324 | } |
| 1325 | if (windowingMode == WINDOWING_MODE_UNDEFINED) { |
| 1326 | // Use the display's windowing mode. |
| 1327 | windowingMode = getWindowingMode(); |
| 1328 | } |
| 1329 | } |
| 1330 | windowingMode = validateWindowingMode(windowingMode, r, task, activityType); |
| 1331 | return windowingMode != WINDOWING_MODE_UNDEFINED |
| 1332 | ? windowingMode : WINDOWING_MODE_FULLSCREEN; |
| 1333 | } |
| 1334 | |
| 1335 | /** |
Jorim Jaggi | 785edb4 | 2020-05-08 12:34:47 +0000 | [diff] [blame] | 1336 | * Check that the requested windowing-mode is appropriate for the specified task and/or activity |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1337 | * on this display. |
| 1338 | * |
| 1339 | * @param windowingMode The windowing-mode to validate. |
| 1340 | * @param r The {@link ActivityRecord} to check against. |
| 1341 | * @param task The {@link Task} to check against. |
| 1342 | * @param activityType An activity type. |
Jorim Jaggi | 785edb4 | 2020-05-08 12:34:47 +0000 | [diff] [blame] | 1343 | * @return The provided windowingMode or the closest valid mode which is appropriate. |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1344 | */ |
Jorim Jaggi | 785edb4 | 2020-05-08 12:34:47 +0000 | [diff] [blame] | 1345 | int validateWindowingMode(int windowingMode, @Nullable ActivityRecord r, @Nullable Task task, |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1346 | int activityType) { |
| 1347 | // Make sure the windowing mode we are trying to use makes sense for what is supported. |
| 1348 | boolean supportsMultiWindow = mAtmService.mSupportsMultiWindow; |
| 1349 | boolean supportsSplitScreen = mAtmService.mSupportsSplitScreenMultiWindow; |
| 1350 | boolean supportsFreeform = mAtmService.mSupportsFreeformWindowManagement; |
| 1351 | boolean supportsPip = mAtmService.mSupportsPictureInPicture; |
| 1352 | if (supportsMultiWindow) { |
| 1353 | if (task != null) { |
| 1354 | supportsMultiWindow = task.isResizeable(); |
| 1355 | supportsSplitScreen = task.supportsSplitScreenWindowingMode(); |
| 1356 | // TODO: Do we need to check for freeform and Pip support here? |
| 1357 | } else if (r != null) { |
| 1358 | supportsMultiWindow = r.isResizeable(); |
| 1359 | supportsSplitScreen = r.supportsSplitScreenWindowingMode(); |
| 1360 | supportsFreeform = r.supportsFreeform(); |
| 1361 | supportsPip = r.supportsPictureInPicture(); |
| 1362 | } |
| 1363 | } |
| 1364 | |
| 1365 | final boolean inSplitScreenMode = isSplitScreenModeActivated(); |
Jorim Jaggi | 785edb4 | 2020-05-08 12:34:47 +0000 | [diff] [blame] | 1366 | if (!inSplitScreenMode |
| 1367 | && windowingMode == WINDOWING_MODE_FULLSCREEN_OR_SPLIT_SCREEN_SECONDARY) { |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1368 | // Switch to the display's windowing mode if we are not in split-screen mode and we are |
| 1369 | // trying to launch in split-screen secondary. |
| 1370 | windowingMode = WINDOWING_MODE_UNDEFINED; |
Jorim Jaggi | 785edb4 | 2020-05-08 12:34:47 +0000 | [diff] [blame] | 1371 | } else if (inSplitScreenMode && (windowingMode == WINDOWING_MODE_FULLSCREEN |
| 1372 | || windowingMode == WINDOWING_MODE_UNDEFINED) |
| 1373 | && supportsSplitScreen) { |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1374 | windowingMode = WINDOWING_MODE_SPLIT_SCREEN_SECONDARY; |
| 1375 | } |
Jorim Jaggi | 785edb4 | 2020-05-08 12:34:47 +0000 | [diff] [blame] | 1376 | |
| 1377 | if (windowingMode != WINDOWING_MODE_UNDEFINED |
| 1378 | && isWindowingModeSupported(windowingMode, supportsMultiWindow, supportsSplitScreen, |
| 1379 | supportsFreeform, supportsPip, activityType)) { |
| 1380 | return windowingMode; |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1381 | } |
Jorim Jaggi | 785edb4 | 2020-05-08 12:34:47 +0000 | [diff] [blame] | 1382 | return WINDOWING_MODE_UNDEFINED; |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1383 | } |
| 1384 | |
| 1385 | boolean isTopStack(ActivityStack stack) { |
| 1386 | return stack == getTopStack(); |
| 1387 | } |
| 1388 | |
| 1389 | boolean isTopNotPinnedStack(ActivityStack stack) { |
| 1390 | for (int i = getStackCount() - 1; i >= 0; --i) { |
| 1391 | final ActivityStack current = getStackAt(i); |
| 1392 | if (!current.inPinnedWindowingMode()) { |
| 1393 | return current == stack; |
| 1394 | } |
| 1395 | } |
| 1396 | return false; |
| 1397 | } |
| 1398 | |
Andrii Kulian | 86d676c | 2020-03-27 19:34:54 -0700 | [diff] [blame] | 1399 | ActivityRecord topRunningActivity() { |
| 1400 | return topRunningActivity(false /* considerKeyguardState */); |
| 1401 | } |
| 1402 | |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1403 | /** |
| 1404 | * Returns the top running activity in the focused stack. In the case the focused stack has no |
| 1405 | * such activity, the next focusable stack on this display is returned. |
| 1406 | * |
| 1407 | * @param considerKeyguardState Indicates whether the locked state should be considered. if |
| 1408 | * {@code true} and the keyguard is locked, only activities that |
| 1409 | * can be shown on top of the keyguard will be considered. |
| 1410 | * @return The top running activity. {@code null} if none is available. |
| 1411 | */ |
| 1412 | ActivityRecord topRunningActivity(boolean considerKeyguardState) { |
| 1413 | ActivityRecord topRunning = null; |
| 1414 | final ActivityStack focusedStack = getFocusedStack(); |
| 1415 | if (focusedStack != null) { |
| 1416 | topRunning = focusedStack.topRunningActivity(); |
| 1417 | } |
| 1418 | |
| 1419 | // Look in other focusable stacks. |
| 1420 | if (topRunning == null) { |
| 1421 | for (int i = getStackCount() - 1; i >= 0; --i) { |
| 1422 | final ActivityStack stack = getStackAt(i); |
| 1423 | // Only consider focusable stacks other than the current focused one. |
| 1424 | if (stack == focusedStack || !stack.isTopActivityFocusable()) { |
| 1425 | continue; |
| 1426 | } |
| 1427 | topRunning = stack.topRunningActivity(); |
| 1428 | if (topRunning != null) { |
| 1429 | break; |
| 1430 | } |
| 1431 | } |
| 1432 | } |
| 1433 | |
| 1434 | // This activity can be considered the top running activity if we are not considering |
| 1435 | // the locked state, the keyguard isn't locked, or we can show when locked. |
| 1436 | if (topRunning != null && considerKeyguardState |
| 1437 | && mRootWindowContainer.mStackSupervisor.getKeyguardController() |
| 1438 | .isKeyguardLocked() |
| 1439 | && !topRunning.canShowWhenLocked()) { |
| 1440 | return null; |
| 1441 | } |
| 1442 | |
| 1443 | return topRunning; |
| 1444 | } |
| 1445 | |
| 1446 | protected int getStackCount() { |
| 1447 | return mChildren.size(); |
| 1448 | } |
| 1449 | |
| 1450 | protected ActivityStack getStackAt(int index) { |
| 1451 | return mChildren.get(index); |
| 1452 | } |
| 1453 | |
| 1454 | /** |
| 1455 | * Returns the existing home stack or creates and returns a new one if it should exist for the |
| 1456 | * display. |
| 1457 | */ |
| 1458 | @Nullable |
| 1459 | ActivityStack getOrCreateRootHomeTask() { |
| 1460 | ActivityStack homeTask = getRootHomeTask(); |
| 1461 | if (homeTask == null && mDisplayContent.supportsSystemDecorations() |
| 1462 | && !mDisplayContent.isUntrustedVirtualDisplay()) { |
Louis Chang | dff902b | 2020-03-31 13:32:47 +0800 | [diff] [blame] | 1463 | homeTask = createStack(WINDOWING_MODE_UNDEFINED, ACTIVITY_TYPE_HOME, false /* onTop */); |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1464 | } |
| 1465 | return homeTask; |
| 1466 | } |
| 1467 | |
| 1468 | boolean isSplitScreenModeActivated() { |
| 1469 | Task task = getRootSplitScreenPrimaryTask(); |
| 1470 | return task != null && task.hasChild(); |
| 1471 | } |
| 1472 | |
| 1473 | /** |
| 1474 | * Returns the topmost stack on the display that is compatible with the input windowing mode. |
| 1475 | * Null is no compatible stack on the display. |
| 1476 | */ |
| 1477 | ActivityStack getTopStackInWindowingMode(int windowingMode) { |
| 1478 | return getStack(windowingMode, ACTIVITY_TYPE_UNDEFINED); |
| 1479 | } |
| 1480 | |
| 1481 | void moveHomeStackToFront(String reason) { |
| 1482 | final ActivityStack homeStack = getOrCreateRootHomeTask(); |
| 1483 | if (homeStack != null) { |
| 1484 | homeStack.moveToFront(reason); |
| 1485 | } |
| 1486 | } |
| 1487 | |
| 1488 | /** |
| 1489 | * Moves the focusable home activity to top. If there is no such activity, the home stack will |
| 1490 | * still move to top. |
| 1491 | */ |
| 1492 | void moveHomeActivityToTop(String reason) { |
| 1493 | final ActivityRecord top = getHomeActivity(); |
| 1494 | if (top == null) { |
| 1495 | moveHomeStackToFront(reason); |
| 1496 | return; |
| 1497 | } |
| 1498 | top.moveFocusableActivityToTop(reason); |
| 1499 | } |
| 1500 | |
| 1501 | @Nullable |
| 1502 | ActivityRecord getHomeActivity() { |
| 1503 | return getHomeActivityForUser(mRootWindowContainer.mCurrentUser); |
| 1504 | } |
| 1505 | |
| 1506 | @Nullable |
| 1507 | ActivityRecord getHomeActivityForUser(int userId) { |
| 1508 | final ActivityStack homeStack = getRootHomeTask(); |
| 1509 | if (homeStack == null) { |
| 1510 | return null; |
| 1511 | } |
| 1512 | |
| 1513 | final PooledPredicate p = PooledLambda.obtainPredicate( |
Andrii Kulian | 86d676c | 2020-03-27 19:34:54 -0700 | [diff] [blame] | 1514 | TaskDisplayArea::isHomeActivityForUser, PooledLambda.__(ActivityRecord.class), |
Andrii Kulian | 9ea12da | 2020-03-27 17:16:38 -0700 | [diff] [blame] | 1515 | userId); |
| 1516 | final ActivityRecord r = homeStack.getActivity(p); |
| 1517 | p.recycle(); |
| 1518 | return r; |
| 1519 | } |
| 1520 | |
| 1521 | private static boolean isHomeActivityForUser(ActivityRecord r, int userId) { |
| 1522 | return r.isActivityTypeHome() && (userId == UserHandle.USER_ALL || r.mUserId == userId); |
| 1523 | } |
| 1524 | |
| 1525 | /** |
| 1526 | * Adjusts the {@param stack} behind the last visible stack in the display if necessary. |
| 1527 | * Generally used in conjunction with {@link #moveStackBehindStack}. |
| 1528 | */ |
| 1529 | // TODO(b/151575894): Remove special stack movement methods. |
| 1530 | void moveStackBehindBottomMostVisibleStack(ActivityStack stack) { |
| 1531 | if (stack.shouldBeVisible(null)) { |
| 1532 | // Skip if the stack is already visible |
| 1533 | return; |
| 1534 | } |
| 1535 | |
| 1536 | final boolean isRootTask = stack.isRootTask(); |
| 1537 | if (isRootTask) { |
| 1538 | // Move the stack to the bottom to not affect the following visibility checks |
| 1539 | positionStackAtBottom(stack); |
| 1540 | } else { |
| 1541 | stack.getParent().positionChildAt(POSITION_BOTTOM, stack, false /* includingParents */); |
| 1542 | } |
| 1543 | |
| 1544 | // Find the next position where the stack should be placed |
| 1545 | final int numStacks = isRootTask ? getStackCount() : stack.getParent().getChildCount(); |
| 1546 | for (int stackNdx = 0; stackNdx < numStacks; stackNdx++) { |
| 1547 | final ActivityStack s = isRootTask ? getStackAt(stackNdx) |
| 1548 | : (ActivityStack) stack.getParent().getChildAt(stackNdx); |
| 1549 | if (s == stack) { |
| 1550 | continue; |
| 1551 | } |
| 1552 | final int winMode = s.getWindowingMode(); |
| 1553 | final boolean isValidWindowingMode = winMode == WINDOWING_MODE_FULLSCREEN |
| 1554 | || winMode == WINDOWING_MODE_SPLIT_SCREEN_SECONDARY; |
| 1555 | if (s.shouldBeVisible(null) && isValidWindowingMode) { |
| 1556 | // Move the provided stack to behind this stack |
| 1557 | final int position = Math.max(0, stackNdx - 1); |
| 1558 | if (isRootTask) { |
| 1559 | positionStackAt(stack, position); |
| 1560 | } else { |
| 1561 | stack.getParent().positionChildAt(position, stack, false /*includingParents */); |
| 1562 | } |
| 1563 | break; |
| 1564 | } |
| 1565 | } |
| 1566 | } |
| 1567 | |
| 1568 | /** |
| 1569 | * Moves the {@param stack} behind the given {@param behindStack} if possible. If |
| 1570 | * {@param behindStack} is not currently in the display, then then the stack is moved to the |
| 1571 | * back. Generally used in conjunction with {@link #moveStackBehindBottomMostVisibleStack}. |
| 1572 | */ |
| 1573 | void moveStackBehindStack(ActivityStack stack, ActivityStack behindStack) { |
| 1574 | if (behindStack == null || behindStack == stack) { |
| 1575 | return; |
| 1576 | } |
| 1577 | |
| 1578 | final WindowContainer parent = stack.getParent(); |
| 1579 | if (parent == null || parent != behindStack.getParent()) { |
| 1580 | return; |
| 1581 | } |
| 1582 | |
| 1583 | // Note that positionChildAt will first remove the given stack before inserting into the |
| 1584 | // list, so we need to adjust the insertion index to account for the removed index |
| 1585 | // TODO: Remove this logic when WindowContainer.positionChildAt() is updated to adjust the |
| 1586 | // position internally |
| 1587 | final int stackIndex = parent.mChildren.indexOf(stack); |
| 1588 | final int behindStackIndex = parent.mChildren.indexOf(behindStack); |
| 1589 | final int insertIndex = stackIndex <= behindStackIndex |
| 1590 | ? behindStackIndex - 1 : behindStackIndex; |
| 1591 | final int position = Math.max(0, insertIndex); |
| 1592 | if (stack.isRootTask()) { |
| 1593 | positionStackAt(stack, position); |
| 1594 | } else { |
| 1595 | parent.positionChildAt(position, stack, false /* includingParents */); |
| 1596 | } |
| 1597 | } |
Andrii Kulian | 86d676c | 2020-03-27 19:34:54 -0700 | [diff] [blame] | 1598 | |
| 1599 | boolean hasPinnedTask() { |
| 1600 | return getRootPinnedTask() != null; |
| 1601 | } |
| 1602 | |
| 1603 | /** |
| 1604 | * @return the stack currently above the {@param stack}. Can be null if the {@param stack} is |
| 1605 | * already top-most. |
| 1606 | */ |
| 1607 | static ActivityStack getStackAbove(ActivityStack stack) { |
| 1608 | final WindowContainer wc = stack.getParent(); |
| 1609 | final int index = wc.mChildren.indexOf(stack) + 1; |
| 1610 | return (index < wc.mChildren.size()) ? (ActivityStack) wc.mChildren.get(index) : null; |
| 1611 | } |
| 1612 | |
Andrii Kulian | 4c0fd0d | 2020-03-29 13:32:14 -0700 | [diff] [blame] | 1613 | /** Returns true if the stack in the windowing mode is visible. */ |
| 1614 | boolean isStackVisible(int windowingMode) { |
| 1615 | final ActivityStack stack = getTopStackInWindowingMode(windowingMode); |
| 1616 | return stack != null && stack.isVisible(); |
| 1617 | } |
| 1618 | |
| 1619 | void removeStack(ActivityStack stack) { |
| 1620 | removeChild(stack); |
| 1621 | } |
| 1622 | |
Andrii Kulian | 86d676c | 2020-03-27 19:34:54 -0700 | [diff] [blame] | 1623 | int getDisplayId() { |
| 1624 | return mDisplayContent.getDisplayId(); |
| 1625 | } |
| 1626 | |
| 1627 | boolean isRemoved() { |
Andrii Kulian | f9df4a8 | 2020-03-31 12:09:27 -0700 | [diff] [blame] | 1628 | return mRemoved; |
Andrii Kulian | 86d676c | 2020-03-27 19:34:54 -0700 | [diff] [blame] | 1629 | } |
Andrii Kulian | 4c0fd0d | 2020-03-29 13:32:14 -0700 | [diff] [blame] | 1630 | |
| 1631 | /** |
| 1632 | * Adds a listener to be notified whenever the stack order in the display changes. Currently |
| 1633 | * only used by the {@link RecentsAnimation} to determine whether to interrupt and cancel the |
| 1634 | * current animation when the system state changes. |
| 1635 | */ |
| 1636 | void registerStackOrderChangedListener(OnStackOrderChangedListener listener) { |
| 1637 | if (!mStackOrderChangedCallbacks.contains(listener)) { |
| 1638 | mStackOrderChangedCallbacks.add(listener); |
| 1639 | } |
| 1640 | } |
| 1641 | |
| 1642 | /** |
| 1643 | * Removes a previously registered stack order change listener. |
| 1644 | */ |
| 1645 | void unregisterStackOrderChangedListener(OnStackOrderChangedListener listener) { |
| 1646 | mStackOrderChangedCallbacks.remove(listener); |
| 1647 | } |
| 1648 | |
| 1649 | /** |
| 1650 | * Notifies of a stack order change |
| 1651 | * @param stack The stack which triggered the order change |
| 1652 | */ |
| 1653 | void onStackOrderChanged(ActivityStack stack) { |
| 1654 | for (int i = mStackOrderChangedCallbacks.size() - 1; i >= 0; i--) { |
| 1655 | mStackOrderChangedCallbacks.get(i).onStackOrderChanged(stack); |
| 1656 | } |
| 1657 | } |
| 1658 | |
Evan Rosky | 0ad8d2c | 2020-03-16 12:09:58 -0700 | [diff] [blame] | 1659 | @Override |
| 1660 | boolean canCreateRemoteAnimationTarget() { |
| 1661 | return true; |
| 1662 | } |
| 1663 | |
Andrii Kulian | 4c0fd0d | 2020-03-29 13:32:14 -0700 | [diff] [blame] | 1664 | /** |
| 1665 | * Callback for when the order of the stacks in the display changes. |
| 1666 | */ |
| 1667 | interface OnStackOrderChangedListener { |
| 1668 | void onStackOrderChanged(ActivityStack stack); |
| 1669 | } |
Andrii Kulian | f9df4a8 | 2020-03-31 12:09:27 -0700 | [diff] [blame] | 1670 | |
| 1671 | void ensureActivitiesVisible(ActivityRecord starting, int configChanges, |
| 1672 | boolean preserveWindows, boolean notifyClients) { |
| 1673 | for (int stackNdx = getStackCount() - 1; stackNdx >= 0; --stackNdx) { |
| 1674 | final ActivityStack stack = getStackAt(stackNdx); |
| 1675 | stack.ensureActivitiesVisible(starting, configChanges, preserveWindows, |
| 1676 | notifyClients); |
| 1677 | } |
| 1678 | } |
| 1679 | |
| 1680 | void prepareFreezingTaskBounds() { |
| 1681 | for (int stackNdx = getChildCount() - 1; stackNdx >= 0; --stackNdx) { |
| 1682 | final ActivityStack stack = getChildAt(stackNdx); |
| 1683 | stack.prepareFreezingTaskBounds(); |
| 1684 | } |
| 1685 | } |
| 1686 | |
| 1687 | /** |
| 1688 | * Removes the stacks in the node applying the content removal node from the display. |
| 1689 | * @return last reparented stack, or {@code null} if the stacks had to be destroyed. |
| 1690 | */ |
| 1691 | ActivityStack remove() { |
| 1692 | mPreferredTopFocusableStack = null; |
| 1693 | // TODO(b/153090332): Allow setting content removal mode per task display area |
| 1694 | final boolean destroyContentOnRemoval = mDisplayContent.shouldDestroyContentOnRemove(); |
| 1695 | final TaskDisplayArea toDisplayArea = mRootWindowContainer.getDefaultTaskDisplayArea(); |
| 1696 | ActivityStack lastReparentedStack = null; |
| 1697 | |
| 1698 | // Stacks could be reparented from the removed display area to other display area. After |
| 1699 | // reparenting the last stack of the removed display area, the display area becomes ready to |
| 1700 | // be released (no more ActivityStack-s). But, we cannot release it at that moment or the |
| 1701 | // related WindowContainer will also be removed. So, we set display area as removed after |
| 1702 | // reparenting stack finished. |
| 1703 | // Keep the order from bottom to top. |
| 1704 | int numStacks = getStackCount(); |
| 1705 | for (int stackNdx = 0; stackNdx < numStacks; stackNdx++) { |
| 1706 | final ActivityStack stack = getStackAt(stackNdx); |
| 1707 | // Always finish non-standard type stacks. |
| 1708 | if (destroyContentOnRemoval || !stack.isActivityTypeStandardOrUndefined()) { |
| 1709 | stack.finishAllActivitiesImmediately(); |
| 1710 | } else { |
| 1711 | // If default display is in split-window mode, set windowing mode of the |
| 1712 | // stack to split-screen secondary. Otherwise, set the windowing mode to |
| 1713 | // undefined by default to let stack inherited the windowing mode from the |
| 1714 | // new display. |
| 1715 | final int windowingMode = toDisplayArea.isSplitScreenModeActivated() |
| 1716 | ? WINDOWING_MODE_SPLIT_SCREEN_SECONDARY |
| 1717 | : WINDOWING_MODE_UNDEFINED; |
| 1718 | stack.reparent(toDisplayArea, true /* onTop */); |
| 1719 | stack.setWindowingMode(windowingMode); |
| 1720 | lastReparentedStack = stack; |
| 1721 | } |
| 1722 | // Stacks may be removed from this display. Ensure each stack will be processed |
| 1723 | // and the loop will end. |
| 1724 | stackNdx -= numStacks - getStackCount(); |
| 1725 | numStacks = getStackCount(); |
| 1726 | } |
| 1727 | mRemoved = true; |
| 1728 | |
| 1729 | return lastReparentedStack; |
| 1730 | } |
| 1731 | |
| 1732 | |
| 1733 | @Override |
| 1734 | void dump(PrintWriter pw, String prefix, boolean dumpAll) { |
| 1735 | pw.println(prefix + "TaskDisplayArea " + getName()); |
| 1736 | if (mPreferredTopFocusableStack != null) { |
| 1737 | pw.println(prefix + " mPreferredTopFocusableStack=" + mPreferredTopFocusableStack); |
| 1738 | } |
| 1739 | if (mLastFocusedStack != null) { |
| 1740 | pw.println(prefix + " mLastFocusedStack=" + mLastFocusedStack); |
| 1741 | } |
| 1742 | pw.println(prefix + " Application tokens in top down Z order:"); |
| 1743 | for (int stackNdx = getChildCount() - 1; stackNdx >= 0; --stackNdx) { |
| 1744 | final ActivityStack stack = getChildAt(stackNdx); |
| 1745 | stack.dump(pw, prefix + " ", dumpAll); |
| 1746 | } |
| 1747 | } |
Andrii Kulian | 526ad43 | 2020-03-27 12:19:51 -0700 | [diff] [blame] | 1748 | } |