EventDispatcher supplies displayID to sent A11yEvents. (46f57445) · Commits · e / os / android_frameworks_base

services/accessibility/accessibility.aconfig

+10 −0

Original line number	Diff line number	Diff line
		@@ -304,6 +304,16 @@ flag {
		bug: "322829049"
		}

		flag {
		name: "touch_explorer_a11y_events_include_display_id"
		namespace: "accessibility"
		description: "When sending an A11y event, TouchExplorer will include its displayId"
		bug: "431092453"
		metadata {
		purpose: PURPOSE_BUGFIX
		}
		}

		flag {
		name: "touch_explorer_use_virtual_device_id"
		namespace: "accessibility"

services/accessibility/java/com/android/server/accessibility/gestures/EventDispatcher.java

+18 −6

Original line number	Diff line number	Diff line
		@@ -29,6 +29,7 @@ import android.view.MotionEvent.PointerProperties;
		import android.view.accessibility.AccessibilityEvent;
		import android.view.accessibility.AccessibilityManager;

		import com.android.internal.annotations.VisibleForTesting;
		import com.android.server.accessibility.AccessibilityManagerService;
		import com.android.server.accessibility.EventStreamTransformation;
		import com.android.server.accessibility.Flags;
		@@ -73,12 +74,17 @@ public class EventDispatcher {

		private TouchState mState;

		@VisibleForTesting
		int mDisplayId;

		EventDispatcher(
		Context context,
		int displayId,
		AccessibilityManagerService ams,
		EventStreamTransformation receiver,
		TouchState state) {
		mContext = context;
		mDisplayId = displayId;
		mAms = ams;
		mReceiver = receiver;
		mState = state;
		@@ -105,7 +111,7 @@ public class EventDispatcher {
		int policyFlags) {
		prototype.setAction(action);

		MotionEvent event = null;
		MotionEvent event;
		if (pointerIdBits == ALL_POINTER_ID_BITS) {
		event = prototype;
		} else {
		@@ -184,20 +190,26 @@ public class EventDispatcher {
		void sendAccessibilityEvent(int type) {
		AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext);
		if (accessibilityManager.isEnabled()) {
		AccessibilityEvent event = AccessibilityEvent.obtain(type);
		event.setWindowId(mAms.getActiveWindowId());
		accessibilityManager.sendAccessibilityEvent(event);
		accessibilityManager.sendAccessibilityEvent(populateAccessibilityEvent(type));
		if (DEBUG) {
		Slog.d(
		LOG_TAG,
		"Sending accessibility event" + AccessibilityEvent.eventTypeToString(type));
		}
		}
		// Todo: get rid of this and have TouchState control the sending of events rather than react
		// to it.
		// Todo(b/431802110): Restructure TouchState to send a11y events rather than receive them.
		mState.onInjectedAccessibilityEvent(type);
		}

		AccessibilityEvent populateAccessibilityEvent(int type) {
		AccessibilityEvent event = new AccessibilityEvent(type);
		event.setWindowId(mAms.getActiveWindowId());
		if (Flags.touchExplorerA11yEventsIncludeDisplayId()) {
		event.setDisplayId(mDisplayId);
		}
		return event;
		}

		@Override
		public String toString() {
		StringBuilder builder = new StringBuilder();

services/accessibility/java/com/android/server/accessibility/gestures/TouchExplorer.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -188,7 +188,7 @@ public class TouchExplorer extends BaseEventStreamTransformation
		mAms = service;
		mState = new TouchState(mDisplayId, mAms);
		mReceivedPointerTracker = mState.getReceivedPointerTracker();
		mDispatcher = new EventDispatcher(context, mAms, super.getNext(), mState);
		mDispatcher = new EventDispatcher(context, mDisplayId, mAms, super.getNext(), mState);
		mDetermineUserIntentTimeout = ViewConfiguration.getDoubleTapTimeout();
		mDoubleTapSlop = ViewConfiguration.get(context).getScaledDoubleTapSlop();
		mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();

services/tests/servicestests/src/com/android/server/accessibility/gestures/EventDispatcherTest.kt

0 → 100644

+62 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2025 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/
		package com.android.server.accessibility.gestures

		import android.content.Context
		import android.platform.test.annotations.EnableFlags
		import android.platform.test.flag.junit.SetFlagsRule
		import android.view.accessibility.AccessibilityEvent
		import androidx.test.runner.AndroidJUnit4
		import com.android.server.accessibility.AccessibilityManagerService
		import com.android.server.accessibility.EventStreamTransformation
		import com.android.server.accessibility.Flags
		import junit.framework.Assert
		import org.junit.Rule
		import org.junit.Test
		import org.junit.runner.RunWith
		import org.mockito.kotlin.doReturn
		import org.mockito.kotlin.mock
		import org.mockito.kotlin.stub

		@RunWith(AndroidJUnit4::class)
		class EventDispatcherTest {
		@get:Rule val mSetFlagsRule = SetFlagsRule()

		private val ams: AccessibilityManagerService = mock<AccessibilityManagerService>()
		private var dispatcher: EventDispatcher = EventDispatcher(
		mock<Context>(),
		0,
		ams,
		mock<EventStreamTransformation>(),
		mock<TouchState>()
		)

		@Test
		@EnableFlags(Flags.FLAG_TOUCH_EXPLORER_A11Y_EVENTS_INCLUDE_DISPLAY_ID)
		fun populateAccessibilityEvent_matchesParameters() {
		val windowId = 1
		val displayId = 2
		val type = AccessibilityEvent.TYPE_TOUCH_INTERACTION_END

		ams.stub { on { activeWindowId } doReturn windowId }
		dispatcher.mDisplayId = displayId
		val event = dispatcher.populateAccessibilityEvent(type)

		Assert.assertEquals(event.windowId, windowId)
		Assert.assertEquals(event.displayId, displayId)
		Assert.assertEquals(event.eventType, type)
		}
		}