From dca6b4da8bc0543c5a7079635c96a7db1ecffd14 Mon Sep 17 00:00:00 2001
From: Sukesh Ram <sukeshram@google.com>
Date: Thu, 13 Mar 2025 14:51:15 -0700
Subject: [PATCH] [CD Taskbar] Stop External Taskbar Destruction on Window
 Close

When all windows on external taskbar are closed, exit desktop mode is trigggered. We stop this signal from destroying the external taskbar. This is because we want to be in desktop mode as long as we are connected to a non-mirroring display.

Flag: com.android.window.flags.enable_taskbar_connected_displays
Bug: 401553128
Test: m
Change-Id: I23b61172bb13f1377c4532a56e7838fbe2140f20
---
 .../launcher3/taskbar/TaskbarManager.java     | 25 +++++++++++++------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java
index 0fff0aa14d..3938c80454 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java
@@ -189,29 +189,28 @@ public class TaskbarManager {
     private class RecreationListener implements DisplayController.DisplayInfoChangeListener {
         @Override
         public void onDisplayInfoChanged(Context context, DisplayController.Info info, int flags) {
+            int displayId = context.getDisplayId();
             if ((flags & CHANGE_DENSITY) != 0) {
-                debugTaskbarManager("onDisplayInfoChanged: Display density changed",
-                        context.getDisplayId());
+                debugTaskbarManager("onDisplayInfoChanged: Display density changed", displayId);
             }
             if ((flags & CHANGE_NAVIGATION_MODE) != 0) {
-                debugTaskbarManager("onDisplayInfoChanged: Navigation mode changed",
-                        context.getDisplayId());
+                debugTaskbarManager("onDisplayInfoChanged: Navigation mode changed", displayId);
             }
             if ((flags & CHANGE_DESKTOP_MODE) != 0) {
                 debugTaskbarManager("onDisplayInfoChanged: Desktop mode changed",
                         context.getDisplayId());
             }
             if ((flags & CHANGE_TASKBAR_PINNING) != 0) {
-                debugTaskbarManager("onDisplayInfoChanged: Taskbar pinning changed",
-                        context.getDisplayId());
+                debugTaskbarManager("onDisplayInfoChanged: Taskbar pinning changed", displayId);
             }
 
             if ((flags & (CHANGE_DENSITY | CHANGE_NAVIGATION_MODE | CHANGE_DESKTOP_MODE
                     | CHANGE_TASKBAR_PINNING | CHANGE_SHOW_LOCKED_TASKBAR)) != 0) {
-                debugTaskbarManager("onDisplayInfoChanged: Recreating Taskbar!",
-                        context.getDisplayId());
+
                 TaskbarActivityContext taskbarActivityContext = getCurrentActivityContext();
                 if ((flags & CHANGE_SHOW_LOCKED_TASKBAR) != 0) {
+                    debugTaskbarManager("onDisplayInfoChanged: show locked taskbar changed!",
+                            displayId);
                     recreateTaskbars();
                 } else if ((flags & CHANGE_DESKTOP_MODE) != 0) {
                     if (mShouldIgnoreNextDesktopModeChangeFromDisplayController) {
@@ -298,6 +297,11 @@ public class TaskbarManager {
                 public void onExitDesktopMode(int duration) {
                     for (int taskbarIndex = 0; taskbarIndex < mTaskbars.size(); taskbarIndex++) {
                         int displayId = mTaskbars.keyAt(taskbarIndex);
+                        if (DesktopExperienceFlags.ENABLE_TASKBAR_CONNECTED_DISPLAYS.isTrue()
+                                && !isDefaultDisplay(displayId)) {
+                            continue;
+                        }
+
                         TaskbarActivityContext taskbarActivityContext = getTaskbarForDisplay(
                                 displayId);
                         if (taskbarActivityContext != null
@@ -317,6 +321,11 @@ public class TaskbarManager {
                 public void onEnterDesktopMode(int duration) {
                     for (int taskbarIndex = 0; taskbarIndex < mTaskbars.size(); taskbarIndex++) {
                         int displayId = mTaskbars.keyAt(taskbarIndex);
+                        if (DesktopExperienceFlags.ENABLE_TASKBAR_CONNECTED_DISPLAYS.isTrue()
+                                && !isDefaultDisplay(displayId)) {
+                            continue;
+                        }
+
                         TaskbarActivityContext taskbarActivityContext = getTaskbarForDisplay(
                                 displayId);
                         if (taskbarActivityContext != null) {