Remove inSplitScreen function

WM-core should not have concept of split screen so remove this
function and refactor function that use inSplitScreen.

Bug: 199236198
Fix: 230819979
Test: pass exsiting tests
Change-Id: I7bd8b39c55decfe7b01328d9e5b697cad7ed6949

services/core/java/com/android/server/wm/RecentsAnimationController.java

@@ -19,7 +19,6 @@ package com.android.server.wm;
 import static android.app.ActivityTaskManager.INVALID_TASK_ID;
 import static android.app.WindowConfiguration.ACTIVITY_TYPE_HOME;
 import static android.app.WindowConfiguration.WINDOWING_MODE_UNDEFINED;
-import static android.content.res.Configuration.ORIENTATION_LANDSCAPE;
 import static android.view.RemoteAnimationTarget.MODE_CLOSING;
 import static android.view.RemoteAnimationTarget.MODE_OPENING;
 import static android.view.WindowManager.INPUT_CONSUMER_RECENTS_ANIMATION;
@@ -602,22 +601,12 @@ public class RecentsAnimationController implements DeathRecipient {
                 || mDisplayContent.getAsyncRotationController() != null) {
             return;
         }
-        boolean shouldTranslateNavBar = false;
-        final boolean isDisplayLandscape =
-                mDisplayContent.getConfiguration().orientation == ORIENTATION_LANDSCAPE;
         for (int i = mPendingAnimations.size() - 1; i >= 0; i--) {
             final TaskAnimationAdapter adapter = mPendingAnimations.get(i);
             final Task task = adapter.mTask;
-            final TaskFragment adjacentTask = task.getRootTask().getAdjacentTaskFragment();
-            final boolean inSplitScreen = task.inSplitScreen();
-            if (task.isActivityTypeHomeOrRecents()
-                    // Skip if the task is in split screen and in landscape.
-                    || (inSplitScreen && isDisplayLandscape)
-                    // Skip if the task is the top task in split screen.
-                    || (inSplitScreen && task.getBounds().top < adjacentTask.getBounds().top)) {
+            if (task.isActivityTypeHomeOrRecents()) {
                 continue;
             }
-            shouldTranslateNavBar = inSplitScreen;
             mNavBarAttachedApp = task.getTopVisibleActivity();
             break;
         }
@@ -630,9 +619,7 @@ public class RecentsAnimationController implements DeathRecipient {
         navWindow.mToken.cancelAnimation();
         final SurfaceControl.Transaction t = navWindow.mToken.getPendingTransaction();
         final SurfaceControl navSurfaceControl = navWindow.mToken.getSurfaceControl();
-        if (shouldTranslateNavBar) {
-            navWindow.setSurfaceTranslationY(-mNavBarAttachedApp.getBounds().top);
-        }
+        navWindow.setSurfaceTranslationY(-mNavBarAttachedApp.getBounds().top);
         t.reparent(navSurfaceControl, mNavBarAttachedApp.getSurfaceControl());
         t.show(navSurfaceControl);
 

services/core/java/com/android/server/wm/Task.java

@@ -28,7 +28,6 @@ import static android.app.WindowConfiguration.ACTIVITY_TYPE_STANDARD;
 import static android.app.WindowConfiguration.ACTIVITY_TYPE_UNDEFINED;
 import static android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM;
 import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN;
-import static android.app.WindowConfiguration.WINDOWING_MODE_MULTI_WINDOW;
 import static android.app.WindowConfiguration.WINDOWING_MODE_PINNED;
 import static android.app.WindowConfiguration.WINDOWING_MODE_UNDEFINED;
 import static android.app.WindowConfiguration.activityTypeToString;
@@ -1720,13 +1719,6 @@ class Task extends TaskFragment {
                 && (topTask == null || topTask.supportsSplitScreenWindowingModeInner(tda));
     }
 
-    /** Returns {@code true} if this task is currently in split-screen. */
-    boolean inSplitScreen() {
-        return getWindowingMode() == WINDOWING_MODE_MULTI_WINDOW
-                && getCreatedByOrganizerTask() != null
-                && getCreatedByOrganizerTask().getAdjacentTaskFragment() != null;
-    }
-
     private boolean supportsSplitScreenWindowingModeInner(@Nullable TaskDisplayArea tda) {
         return super.supportsSplitScreenWindowingMode()
                 && mAtmService.mSupportsSplitScreenMultiWindow

services/core/java/com/android/server/wm/TaskDisplayArea.java

@@ -1163,20 +1163,21 @@ final class TaskDisplayArea extends DisplayArea<WindowContainer> {
             }
         }
 
-        // For a better split UX, If a task is launching from a created-by-organizer task, it should
-        // be launched into the same created-by-organizer task as well. Unless, the candidate task
-        // is already positioned in the split.
-        Task preferredRootInSplit = sourceTask != null && sourceTask.inSplitScreen()
-                ? sourceTask.getCreatedByOrganizerTask() : null;
-        if (preferredRootInSplit != null) {
-            if (candidateTask != null) {
-                final Task candidateRoot = candidateTask.getCreatedByOrganizerTask();
-                if (candidateRoot != null && candidateRoot != preferredRootInSplit
-                        && preferredRootInSplit == candidateRoot.getAdjacentTaskFragment()) {
-                    preferredRootInSplit = candidateRoot;
+        // If a task is launching from a created-by-organizer task, it should be launched into the
+        // same created-by-organizer task as well. Unless, the candidate task is already positioned
+        // in the another adjacent task.
+        if (sourceTask != null) {
+            Task launchTarget = sourceTask.getCreatedByOrganizerTask();
+            if (launchTarget != null && launchTarget.getAdjacentTaskFragment() != null) {
+                if (candidateTask != null) {
+                    final Task candidateRoot = candidateTask.getCreatedByOrganizerTask();
+                    if (candidateRoot != null && candidateRoot != launchTarget
+                            && launchTarget == candidateRoot.getAdjacentTaskFragment()) {
+                        launchTarget = candidateRoot;
+                    }
                 }
+                return launchTarget;
             }
-            return preferredRootInSplit;
         }
 
         return null;

services/core/java/com/android/server/wm/WindowState.java

@@ -3639,13 +3639,11 @@ class WindowState extends WindowContainer<WindowState> implements WindowManagerP
         final int requested = mLastRequestedExclusionHeight[side];
         final int granted = mLastGrantedExclusionHeight[side];
 
-        final boolean inSplitScreen = getTask() != null && getTask().inSplitScreen();
-
         FrameworkStatsLog.write(FrameworkStatsLog.EXCLUSION_RECT_STATE_CHANGED,
                 mAttrs.packageName, requested, requested - granted /* rejected */,
                 side + 1 /* Sides are 1-indexed in atoms.proto */,
                 (getConfiguration().orientation == ORIENTATION_LANDSCAPE),
-                inSplitScreen, (int) duration);
+                false /* (deprecated param) inSplitscreen */, (int) duration);
     }
 
     private void initExclusionRestrictions() {