Dispatch accessibility gesture if device supports touch

This change fixes the issue where AccessibilityService was not able to
dispatch a gesture if a device doesn't have a touchscreen hardware
feature, resulting the behavior gap between CTS and framework.

With this CL, AccessibilityService can dispatch a gesture if the device
declares touchscreen or faketouch hardware features.

Bug: 177021722
Test: AccessibilityManagerServiceTest AccessibilityServiceConnectionTest
Test: CtsAccessibilityServiceTestCases on crosshatch and kindred
Change-Id: I8a1e4884d1283705d409ed38e35047ec2dcd89f0

services/accessibility/java/com/android/server/accessibility/AccessibilityServiceConnection.java

@@ -372,12 +372,11 @@ class AccessibilityServiceConnection extends AbstractAccessibilityServiceConnect
 
     @Override
     public void dispatchGesture(int sequence, ParceledListSlice gestureSteps, int displayId) {
-        final boolean isTouchableDisplay = mWindowManagerService.isTouchableDisplay(displayId);
         synchronized (mLock) {
             if (mSecurityPolicy.canPerformGestures(this)) {
                 MotionEventInjector motionEventInjector =
                         mSystemSupport.getMotionEventInjectorForDisplayLocked(displayId);
-                if (motionEventInjector != null && isTouchableDisplay) {
+                if (mWindowManagerService.isTouchOrFaketouchDevice()) {
                     motionEventInjector.injectEvents(
                             gestureSteps.getList(), mServiceInterface, sequence, displayId);
                 } else {

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

@@ -543,9 +543,9 @@ public abstract class WindowManagerInternal {
     public abstract void removeNonHighRefreshRatePackage(@NonNull String packageName);
 
     /**
-     * Checks if this display is touchable.
+     * Checks if the device supports touch or faketouch.
      */
-    public abstract boolean isTouchableDisplay(int displayId);
+    public abstract boolean isTouchOrFaketouchDevice();
 
     /**
      * Returns the info associated with the input token used to determine if a key should be

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

@@ -753,6 +753,7 @@ public class WindowManagerService extends IWindowManager.Stub
     final TaskSnapshotController mTaskSnapshotController;
 
     boolean mIsTouchDevice;
+    boolean mIsFakeTouchDevice;
 
     final H mH = new H();
 
@@ -5030,6 +5031,8 @@ public class WindowManagerService extends IWindowManager.Stub
             mRoot.forAllDisplays(DisplayContent::reconfigureDisplayLocked);
             mIsTouchDevice = mContext.getPackageManager().hasSystemFeature(
                     PackageManager.FEATURE_TOUCHSCREEN);
+            mIsFakeTouchDevice = mContext.getPackageManager().hasSystemFeature(
+                    PackageManager.FEATURE_FAKETOUCH);
         }
 
         try {
@@ -8018,13 +8021,10 @@ public class WindowManagerService extends IWindowManager.Stub
         }
 
         @Override
-        public boolean isTouchableDisplay(int displayId) {
+        public boolean isTouchOrFaketouchDevice() {
             synchronized (mGlobalLock) {
-                final DisplayContent displayContent = mRoot.getDisplayContent(displayId);
-                final Configuration configuration =
-                        displayContent != null ? displayContent.getConfiguration() : null;
-                return configuration != null
-                        && configuration.touchscreen == Configuration.TOUCHSCREEN_FINGER;
+                // All touchable devices are also faketouchable.
+                return mIsFakeTouchDevice;
             }
         }
 

services/tests/servicestests/src/com/android/server/accessibility/AccessibilityServiceConnectionTest.java

@@ -110,8 +110,6 @@ public class AccessibilityServiceConnectionTest {
         mMockResolveInfo.serviceInfo.applicationInfo = mock(ApplicationInfo.class);
 
         when(mMockIBinder.queryLocalInterface(any())).thenReturn(mMockServiceClient);
-        when(mMockWindowManagerInternal.isTouchableDisplay(Display.DEFAULT_DISPLAY)).thenReturn(
-                true);
 
         mConnection = new AccessibilityServiceConnection(mMockUserState, mMockContext,
                 COMPONENT_NAME, mMockServiceInfo, SERVICE_ID, mHandler, new Object(),
@@ -197,8 +195,9 @@ public class AccessibilityServiceConnectionTest {
     }
 
     @Test
-    public void sendGesture_touchableDisplay_injectEvents()
+    public void sendGesture_touchableDevice_injectEvents()
             throws RemoteException {
+        when(mMockWindowManagerInternal.isTouchOrFaketouchDevice()).thenReturn(true);
         setServiceBinding(COMPONENT_NAME);
         mConnection.bindLocked();
         mConnection.onServiceConnected(COMPONENT_NAME, mMockIBinder);
@@ -213,10 +212,9 @@ public class AccessibilityServiceConnectionTest {
     }
 
     @Test
-    public void sendGesture_untouchableDisplay_performGestureResultFailed()
+    public void sendGesture_untouchableDevice_performGestureResultFailed()
             throws RemoteException {
-        when(mMockWindowManagerInternal.isTouchableDisplay(Display.DEFAULT_DISPLAY)).thenReturn(
-                false);
+        when(mMockWindowManagerInternal.isTouchOrFaketouchDevice()).thenReturn(false);
         setServiceBinding(COMPONENT_NAME);
         mConnection.bindLocked();
         mConnection.onServiceConnected(COMPONENT_NAME, mMockIBinder);