From 96d28aae022f7947f6d95cd8d5aa78183c807a57 Mon Sep 17 00:00:00 2001
From: Tracy Zhou <tracyzhou@google.com>
Date: Wed, 4 Jan 2023 08:30:16 +0000
Subject: [PATCH] Map META (upon release) to launching all apps

Fixes: 246661170
Test: Tap meta key, and see all apps launched upon release
Change-Id: I717899b6f72dabf36312db9f02d61eb761ee852f
---
 .../AccessibilityManagerService.java          |  5 +++++
 .../server/AccessibilityManagerInternal.java  |  7 +++++++
 .../server/policy/PhoneWindowManager.java     | 19 ++++++++++++++++++-
 3 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java b/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java
index 1183d6b96b02c..c5598cbaeeafe 100644
--- a/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java
+++ b/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java
@@ -368,6 +368,11 @@ public class AccessibilityManagerService extends IAccessibilityManager.Stub
             mService.scheduleStartInput(remoteAccessibilityInputConnection, editorInfo, restarting);
         }
 
+        @Override
+        public void performSystemAction(int actionId) {
+            mService.getSystemActionPerformer().performSystemAction(actionId);
+        }
+
         @Override
         public boolean isTouchExplorationEnabled(@UserIdInt int userId) {
             synchronized (mService.mLock) {
diff --git a/services/core/java/com/android/server/AccessibilityManagerInternal.java b/services/core/java/com/android/server/AccessibilityManagerInternal.java
index faa45ca558a3f..e26e9f6f0b919 100644
--- a/services/core/java/com/android/server/AccessibilityManagerInternal.java
+++ b/services/core/java/com/android/server/AccessibilityManagerInternal.java
@@ -50,6 +50,9 @@ public abstract class AccessibilityManagerInternal {
             IRemoteAccessibilityInputConnection remoteAccessibilityInputConnection,
             EditorInfo editorInfo, boolean restarting);
 
+    /** Trigger a system action with the provided {@code actionId}. */
+    public abstract void performSystemAction(int actionId);
+
     /**
      * Queries whether touch-exploration mode is enabled or not for the specified user.
      *
@@ -86,6 +89,10 @@ public abstract class AccessibilityManagerInternal {
         public boolean isTouchExplorationEnabled(int userId) {
             return false;
         }
+
+        @Override
+        public void performSystemAction(int actionId) {
+        }
     };
 
     /**
diff --git a/services/core/java/com/android/server/policy/PhoneWindowManager.java b/services/core/java/com/android/server/policy/PhoneWindowManager.java
index fe0fe29d7b50d..c0509bcbc6629 100644
--- a/services/core/java/com/android/server/policy/PhoneWindowManager.java
+++ b/services/core/java/com/android/server/policy/PhoneWindowManager.java
@@ -86,6 +86,7 @@ import static com.android.server.wm.WindowManagerPolicyProto.ROTATION_MODE;
 import static com.android.server.wm.WindowManagerPolicyProto.SCREEN_ON_FULLY;
 import static com.android.server.wm.WindowManagerPolicyProto.WINDOW_MANAGER_DRAW_COMPLETE;
 
+import android.accessibilityservice.AccessibilityService;
 import android.accessibilityservice.AccessibilityServiceInfo;
 import android.annotation.Nullable;
 import android.app.ActivityManager;
@@ -200,6 +201,7 @@ import com.android.internal.policy.PhoneWindow;
 import com.android.internal.policy.TransitionAnimation;
 import com.android.internal.statusbar.IStatusBarService;
 import com.android.internal.util.ArrayUtils;
+import com.android.server.AccessibilityManagerInternal;
 import com.android.server.ExtconStateObserver;
 import com.android.server.ExtconUEventObserver;
 import com.android.server.GestureLauncherService;
@@ -404,6 +406,7 @@ public class PhoneWindowManager implements WindowManagerPolicy {
     Vibrator mVibrator; // Vibrator for giving feedback of orientation changes
     SearchManager mSearchManager;
     AccessibilityManager mAccessibilityManager;
+    AccessibilityManagerInternal mAccessibilityManagerInternal;
     BurnInProtectionHelper mBurnInProtectionHelper;
     private DisplayFoldController mDisplayFoldController;
     AppOpsManager mAppOpsManager;
@@ -851,6 +854,15 @@ public class PhoneWindowManager implements WindowManagerPolicy {
         }
     }
 
+    AccessibilityManagerInternal getAccessibilityManagerInternal() {
+        synchronized (mServiceAcquireLock) {
+            if (mAccessibilityManagerInternal == null) {
+                mAccessibilityManagerInternal =
+                        LocalServices.getService(AccessibilityManagerInternal.class);
+            }
+            return mAccessibilityManagerInternal;
+        }
+    }
 
     // returns true if the key was handled and should not be passed to the user
     private boolean backKeyPress() {
@@ -1710,6 +1722,11 @@ public class PhoneWindowManager implements WindowManagerPolicy {
         startActivityAsUser(intent, UserHandle.CURRENT);
     }
 
+    private void launchAllAppsViaA11y() {
+        getAccessibilityManagerInternal().performSystemAction(
+                AccessibilityService.GLOBAL_ACTION_ACCESSIBILITY_ALL_APPS);
+    }
+
     private void toggleNotificationPanel() {
         IStatusBarService statusBarService = getStatusBarService();
         if (isUserSetupComplete() && statusBarService != null) {
@@ -3138,7 +3155,7 @@ public class PhoneWindowManager implements WindowManagerPolicy {
                         mPendingCapsLockToggle = false;
                     } else if (mPendingMetaAction) {
                         if (!canceled) {
-                            // TODO: launch all apps here.
+                            launchAllAppsViaA11y();
                         }
                         mPendingMetaAction = false;
                     }