TouchExplorer: statically import event type constants. (13ba0828) · Commits · e / os / android_frameworks_base

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

+99 −99

Original line number	Diff line number	Diff line
		@@ -16,7 +16,23 @@

		package com.android.server.accessibility.gestures;

		import static android.view.MotionEvent.ACTION_CANCEL;
		import static android.view.MotionEvent.ACTION_DOWN;
		import static android.view.MotionEvent.ACTION_HOVER_ENTER;
		import static android.view.MotionEvent.ACTION_HOVER_EXIT;
		import static android.view.MotionEvent.ACTION_HOVER_MOVE;
		import static android.view.MotionEvent.ACTION_MOVE;
		import static android.view.MotionEvent.ACTION_POINTER_DOWN;
		import static android.view.MotionEvent.ACTION_POINTER_UP;
		import static android.view.MotionEvent.ACTION_UP;
		import static android.view.MotionEvent.INVALID_POINTER_ID;
		import static android.view.accessibility.AccessibilityEvent.TYPE_GESTURE_DETECTION_END;
		import static android.view.accessibility.AccessibilityEvent.TYPE_GESTURE_DETECTION_START;
		import static android.view.accessibility.AccessibilityEvent.TYPE_TOUCH_EXPLORATION_GESTURE_END;
		import static android.view.accessibility.AccessibilityEvent.TYPE_TOUCH_EXPLORATION_GESTURE_START;
		import static android.view.accessibility.AccessibilityEvent.TYPE_TOUCH_INTERACTION_END;
		import static android.view.accessibility.AccessibilityEvent.TYPE_TOUCH_INTERACTION_START;
		import static android.view.accessibility.AccessibilityEvent.TYPE_VIEW_HOVER_EXIT;

		import static com.android.server.accessibility.gestures.TouchState.ALL_POINTER_ID_BITS;

		@@ -144,8 +160,8 @@ public class TouchExplorer extends BaseEventStreamTransformation
		* @param detector The gesture detector to handle accessibility touch event. If null the default
		* one created in place, or for testing purpose.
		*/
		public TouchExplorer(Context context, AccessibilityManagerService service,
		GestureManifold detector) {
		public TouchExplorer(
		Context context, AccessibilityManagerService service, GestureManifold detector) {
		mContext = context;
		mAms = service;
		mState = new TouchState();
		@@ -157,12 +173,12 @@ public class TouchExplorer extends BaseEventStreamTransformation
		mExitGestureDetectionModeDelayed = new ExitGestureDetectionModeDelayed();
		mSendHoverEnterAndMoveDelayed = new SendHoverEnterAndMoveDelayed();
		mSendHoverExitDelayed = new SendHoverExitDelayed();
		mSendTouchExplorationEndDelayed = new SendAccessibilityEventDelayed(
		AccessibilityEvent.TYPE_TOUCH_EXPLORATION_GESTURE_END,
		mDetermineUserIntentTimeout);
		mSendTouchInteractionEndDelayed = new SendAccessibilityEventDelayed(
		AccessibilityEvent.TYPE_TOUCH_INTERACTION_END,
		mDetermineUserIntentTimeout);
		mSendTouchExplorationEndDelayed =
		new SendAccessibilityEventDelayed(
		TYPE_TOUCH_EXPLORATION_GESTURE_END, mDetermineUserIntentTimeout);
		mSendTouchInteractionEndDelayed =
		new SendAccessibilityEventDelayed(
		TYPE_TOUCH_INTERACTION_END, mDetermineUserIntentTimeout);
		if (detector == null) {
		mGestureDetector = new GestureManifold(context, this, mState);
		} else {
		@@ -242,7 +258,7 @@ public class TouchExplorer extends BaseEventStreamTransformation
		}
		}

		if (event.getActionMasked() == MotionEvent.ACTION_CANCEL) {
		if (event.getActionMasked() == ACTION_CANCEL) {
		clear(event, policyFlags);
		return;
		}
		@@ -276,19 +292,16 @@ public class TouchExplorer extends BaseEventStreamTransformation

		// The event for gesture end should be strictly after the
		// last hover exit event.
		if (mSendTouchExplorationEndDelayed.isPending()
		&& eventType == AccessibilityEvent.TYPE_VIEW_HOVER_EXIT) {
		if (mSendTouchExplorationEndDelayed.isPending() && eventType == TYPE_VIEW_HOVER_EXIT) {
		mSendTouchExplorationEndDelayed.cancel();
		mDispatcher.sendAccessibilityEvent(
		AccessibilityEvent.TYPE_TOUCH_EXPLORATION_GESTURE_END);
		mDispatcher.sendAccessibilityEvent(TYPE_TOUCH_EXPLORATION_GESTURE_END);
		}

		// The event for touch interaction end should be strictly after the
		// last hover exit and the touch exploration gesture end events.
		if (mSendTouchInteractionEndDelayed.isPending()
		&& eventType == AccessibilityEvent.TYPE_VIEW_HOVER_EXIT) {
		if (mSendTouchInteractionEndDelayed.isPending() && eventType == TYPE_VIEW_HOVER_EXIT) {
		mSendTouchInteractionEndDelayed.cancel();
		mDispatcher.sendAccessibilityEvent(AccessibilityEvent.TYPE_TOUCH_INTERACTION_END);
		mDispatcher.sendAccessibilityEvent(TYPE_TOUCH_INTERACTION_END);
		}
		super.onAccessibilityEvent(event);
		}
		@@ -314,7 +327,7 @@ public class TouchExplorer extends BaseEventStreamTransformation
		}

		// Announce the end of a new touch interaction.
		mDispatcher.sendAccessibilityEvent(AccessibilityEvent.TYPE_TOUCH_INTERACTION_END);
		mDispatcher.sendAccessibilityEvent(TYPE_TOUCH_INTERACTION_END);
		mSendTouchInteractionEndDelayed.cancel();
		// Try to use the standard accessibility API to click
		if (!mAms.performActionOnAccessibilityFocusedItem(
		@@ -334,7 +347,7 @@ public class TouchExplorer extends BaseEventStreamTransformation
		mExitGestureDetectionModeDelayed.post();
		// Send accessibility event to announce the start
		// of gesture recognition.
		mDispatcher.sendAccessibilityEvent(AccessibilityEvent.TYPE_GESTURE_DETECTION_START);
		mDispatcher.sendAccessibilityEvent(TYPE_GESTURE_DETECTION_START);
		return false;
		}

		@@ -350,11 +363,11 @@ public class TouchExplorer extends BaseEventStreamTransformation
		@Override
		public boolean onGestureCancelled(MotionEvent event, MotionEvent rawEvent, int policyFlags) {
		if (mState.isGestureDetecting()) {
		endGestureDetection(event.getActionMasked() == MotionEvent.ACTION_UP);
		endGestureDetection(event.getActionMasked() == ACTION_UP);
		return true;
		} else if (mState.isTouchExploring()) {
		// If the finger is still moving, pass the event on.
		if (event.getActionMasked() == MotionEvent.ACTION_MOVE) {
		if (event.getActionMasked() == ACTION_MOVE) {
		final int pointerId = mReceivedPointerTracker.getPrimaryPointerId();
		final int pointerIdBits = (1 << pointerId);

		@@ -365,7 +378,7 @@ public class TouchExplorer extends BaseEventStreamTransformation
		mSendHoverExitDelayed.cancel();
		mDispatcher.sendMotionEvent(
		event,
		MotionEvent.ACTION_HOVER_MOVE,
		ACTION_HOVER_MOVE,
		mState.getLastReceivedEvent(),
		pointerIdBits,
		policyFlags);
		@@ -382,7 +395,7 @@ public class TouchExplorer extends BaseEventStreamTransformation
		MotionEvent event, MotionEvent rawEvent, int policyFlags) {
		switch (event.getActionMasked()) {
		// The only way to leave the clear state is for a pointer to go down.
		case MotionEvent.ACTION_DOWN:
		case ACTION_DOWN:
		handleActionDown(event, rawEvent, policyFlags);
		break;
		default:
		@@ -423,7 +436,7 @@ public class TouchExplorer extends BaseEventStreamTransformation
		}
		mSendTouchExplorationEndDelayed.forceSendAndRemove();
		mSendTouchInteractionEndDelayed.forceSendAndRemove();
		mDispatcher.sendAccessibilityEvent(AccessibilityEvent.TYPE_TOUCH_INTERACTION_START);
		mDispatcher.sendAccessibilityEvent(TYPE_TOUCH_INTERACTION_START);
		if (mTouchExplorationPassthroughRegion.contains(
		(int) event.getX(), (int) event.getY())) {
		// The touch exploration passthrough overrides the gesture detection passthrough in
		@@ -455,18 +468,18 @@ public class TouchExplorer extends BaseEventStreamTransformation
		private void handleMotionEventStateTouchInteracting(
		MotionEvent event, MotionEvent rawEvent, int policyFlags) {
		switch (event.getActionMasked()) {
		case MotionEvent.ACTION_DOWN:
		case ACTION_DOWN:
		// Continue the previous interaction.
		mSendTouchInteractionEndDelayed.cancel();
		handleActionDown(event, rawEvent, policyFlags);
		break;
		case MotionEvent.ACTION_POINTER_DOWN:
		case ACTION_POINTER_DOWN:
		handleActionPointerDown(event, rawEvent, policyFlags);
		break;
		case MotionEvent.ACTION_MOVE:
		case ACTION_MOVE:
		handleActionMoveStateTouchInteracting(event, rawEvent, policyFlags);
		break;
		case MotionEvent.ACTION_UP:
		case ACTION_UP:
		handleActionUp(event, rawEvent, policyFlags);
		break;
		}
		@@ -482,16 +495,16 @@ public class TouchExplorer extends BaseEventStreamTransformation
		private void handleMotionEventStateTouchExploring(
		MotionEvent event, MotionEvent rawEvent, int policyFlags) {
		switch (event.getActionMasked()) {
		case MotionEvent.ACTION_DOWN:
		case ACTION_DOWN:
		// We should have already received ACTION_DOWN. Ignore.
		break;
		case MotionEvent.ACTION_POINTER_DOWN:
		case ACTION_POINTER_DOWN:
		handleActionPointerDown(event, rawEvent, policyFlags);
		break;
		case MotionEvent.ACTION_MOVE:
		case ACTION_MOVE:
		handleActionMoveStateTouchExploring(event, rawEvent, policyFlags);
		break;
		case MotionEvent.ACTION_UP:
		case ACTION_UP:
		handleActionUp(event, rawEvent, policyFlags);
		break;
		default:
		@@ -553,7 +566,7 @@ public class TouchExplorer extends BaseEventStreamTransformation
		mDraggingPointerId = pointerId;
		event.setEdgeFlags(mReceivedPointerTracker.getLastReceivedDownEdgeFlags());
		mDispatcher.sendMotionEvent(
		event, MotionEvent.ACTION_DOWN, rawEvent, pointerIdBits, policyFlags);
		event, ACTION_DOWN, rawEvent, pointerIdBits, policyFlags);
		} else {
		// Two pointers moving arbitrary are delegated to the view hierarchy.
		mState.startDelegating();
		@@ -606,7 +619,7 @@ public class TouchExplorer extends BaseEventStreamTransformation
		// Touch exploration.
		sendTouchExplorationGestureStartAndHoverEnterIfNeeded(policyFlags);
		mDispatcher.sendMotionEvent(
		event, MotionEvent.ACTION_HOVER_MOVE, rawEvent, pointerIdBits, policyFlags);
		event, ACTION_HOVER_MOVE, rawEvent, pointerIdBits, policyFlags);
		break;
		case 2:
		if (mGestureDetector.isMultiFingerGesturesEnabled()) {
		@@ -671,48 +684,48 @@ public class TouchExplorer extends BaseEventStreamTransformation
		int pointerIdBits = 0;
		// Clear the dragging pointer id if it's no longer valid.
		if (event.findPointerIndex(mDraggingPointerId) == -1) {
		Slog.e(LOG_TAG, "mDraggingPointerId doesn't match any pointers on current event. " +
		"mDraggingPointerId: " + Integer.toString(mDraggingPointerId) +
		", Event: " + event);
		Slog.e(
		LOG_TAG,
		"mDraggingPointerId doesn't match any pointers on current event. "
		+ "mDraggingPointerId: "
		+ Integer.toString(mDraggingPointerId)
		+ ", Event: "
		+ event);
		mDraggingPointerId = INVALID_POINTER_ID;
		} else {
		pointerIdBits = (1 << mDraggingPointerId);
		}
		switch (event.getActionMasked()) {
		case MotionEvent.ACTION_DOWN: {
		Slog.e(LOG_TAG, "Dragging state can be reached only if two "
		+ "pointers are already down");
		case ACTION_DOWN:
		Slog.e(
		LOG_TAG,
		"Dragging state can be reached only if two " + "pointers are already down");
		clear(event, policyFlags);
		return;
		}
		case MotionEvent.ACTION_POINTER_DOWN: {
		case ACTION_POINTER_DOWN:
		// We are in dragging state so we have two pointers and another one
		// goes down => delegate the three pointers to the view hierarchy
		mState.startDelegating();
		if (mDraggingPointerId != INVALID_POINTER_ID) {
		mDispatcher.sendMotionEvent(
		event, MotionEvent.ACTION_UP, rawEvent, pointerIdBits, policyFlags);
		event, ACTION_UP, rawEvent, pointerIdBits, policyFlags);
		}
		mDispatcher.sendDownForAllNotInjectedPointers(event, policyFlags);
		} break;
		case MotionEvent.ACTION_MOVE: {
		break;
		case ACTION_MOVE:
		if (mDraggingPointerId == INVALID_POINTER_ID) {
		break;
		}
		switch (event.getPointerCount()) {
		case 1: {
		case 1:
		// do nothing
		} break;
		case 2: {
		break;
		case 2:
		if (isDraggingGesture(event)) {
		// If still dragging send a drag event.
		adjustEventLocationForDrag(event);
		mDispatcher.sendMotionEvent(
		event,
		MotionEvent.ACTION_MOVE,
		rawEvent,
		pointerIdBits,
		policyFlags);
		event, ACTION_MOVE, rawEvent, pointerIdBits, policyFlags);
		} else {
		// The two pointers are moving either in different directions or
		// no close enough => delegate the gesture to the view hierarchy.
		@@ -721,52 +734,40 @@ public class TouchExplorer extends BaseEventStreamTransformation
		event = MotionEvent.obtainNoHistory(event);
		// Send an event to the end of the drag gesture.
		mDispatcher.sendMotionEvent(
		event,
		MotionEvent.ACTION_UP,
		rawEvent,
		pointerIdBits,
		policyFlags);
		event, ACTION_UP, rawEvent, pointerIdBits, policyFlags);
		// Deliver all pointers to the view hierarchy.
		mDispatcher.sendDownForAllNotInjectedPointers(event, policyFlags);
		}
		} break;
		default: {
		break;
		default:
		mState.startDelegating();
		event = MotionEvent.obtainNoHistory(event);
		// Send an event to the end of the drag gesture.
		mDispatcher.sendMotionEvent(
		event,
		MotionEvent.ACTION_UP,
		rawEvent,
		pointerIdBits,
		policyFlags);
		event, ACTION_UP, rawEvent, pointerIdBits, policyFlags);
		// Deliver all pointers to the view hierarchy.
		mDispatcher.sendDownForAllNotInjectedPointers(event, policyFlags);
		}
		}
		} break;
		case MotionEvent.ACTION_POINTER_UP: {
		final int pointerId = event.getPointerId(event.getActionIndex());
		if (pointerId == mDraggingPointerId) {
		break;
		case ACTION_POINTER_UP:
		if (event.getPointerId(GestureUtils.getActionIndex(event)) == mDraggingPointerId) {
		mDraggingPointerId = INVALID_POINTER_ID;
		// Send an event to the end of the drag gesture.
		mDispatcher.sendMotionEvent(
		event, MotionEvent.ACTION_UP, rawEvent, pointerIdBits, policyFlags);
		event, ACTION_UP, rawEvent, pointerIdBits, policyFlags);
		}
		} break;
		case MotionEvent.ACTION_UP: {
		break;
		case ACTION_UP:
		mAms.onTouchInteractionEnd();
		// Announce the end of a new touch interaction.
		mDispatcher.sendAccessibilityEvent(
		AccessibilityEvent.TYPE_TOUCH_INTERACTION_END);
		final int pointerId = event.getPointerId(event.getActionIndex());
		if (pointerId == mDraggingPointerId) {
		mDispatcher.sendAccessibilityEvent(TYPE_TOUCH_INTERACTION_END);
		if (event.getPointerId(GestureUtils.getActionIndex(event)) == mDraggingPointerId) {
		mDraggingPointerId = INVALID_POINTER_ID;
		// Send an event to the end of the drag gesture.
		mDispatcher.sendMotionEvent(
		event, MotionEvent.ACTION_UP, rawEvent, pointerIdBits, policyFlags);
		event, ACTION_UP, rawEvent, pointerIdBits, policyFlags);
		}
		} break;
		break;
		}
		}

		@@ -783,20 +784,20 @@ public class TouchExplorer extends BaseEventStreamTransformation
		return;
		}
		switch (event.getActionMasked()) {
		case MotionEvent.ACTION_DOWN: {
		case ACTION_DOWN: {
		Slog.e(LOG_TAG, "Delegating state can only be reached if "
		+ "there is at least one pointer down!");
		clear(event, policyFlags);
		return;
		}
		case MotionEvent.ACTION_UP: {
		case ACTION_UP: {
		// Deliver the event.
		mDispatcher.sendMotionEvent(
		event, event.getAction(), rawEvent, ALL_POINTER_ID_BITS, policyFlags);

		// Announce the end of a the touch interaction.
		mAms.onTouchInteractionEnd();
		mDispatcher.sendAccessibilityEvent(AccessibilityEvent.TYPE_TOUCH_INTERACTION_END);
		mDispatcher.sendAccessibilityEvent(TYPE_TOUCH_INTERACTION_END);

		} break;
		default: {
		@@ -811,10 +812,10 @@ public class TouchExplorer extends BaseEventStreamTransformation
		mAms.onTouchInteractionEnd();

		// Announce the end of the gesture recognition.
		mDispatcher.sendAccessibilityEvent(AccessibilityEvent.TYPE_GESTURE_DETECTION_END);
		mDispatcher.sendAccessibilityEvent(TYPE_GESTURE_DETECTION_END);
		// Don't announce the end of a the touch interaction if users didn't lift their fingers.
		if (interactionEnd) {
		mDispatcher.sendAccessibilityEvent(AccessibilityEvent.TYPE_TOUCH_INTERACTION_END);
		mDispatcher.sendAccessibilityEvent(TYPE_TOUCH_INTERACTION_END);
		}

		mExitGestureDetectionModeDelayed.cancel();
		@@ -829,14 +830,14 @@ public class TouchExplorer extends BaseEventStreamTransformation
		*/
		private void sendHoverExitAndTouchExplorationGestureEndIfNeeded(int policyFlags) {
		MotionEvent event = mDispatcher.getLastInjectedHoverEvent();
		if (event != null && event.getActionMasked() != MotionEvent.ACTION_HOVER_EXIT) {
		if (event != null && event.getActionMasked() != ACTION_HOVER_EXIT) {
		final int pointerIdBits = event.getPointerIdBits();
		if (!mSendTouchExplorationEndDelayed.isPending()) {
		mSendTouchExplorationEndDelayed.post();
		}
		mDispatcher.sendMotionEvent(
		event,
		MotionEvent.ACTION_HOVER_EXIT,
		ACTION_HOVER_EXIT,
		mState.getLastReceivedEvent(),
		pointerIdBits,
		policyFlags);
		@@ -851,11 +852,11 @@ public class TouchExplorer extends BaseEventStreamTransformation
		*/
		private void sendTouchExplorationGestureStartAndHoverEnterIfNeeded(int policyFlags) {
		MotionEvent event = mDispatcher.getLastInjectedHoverEvent();
		if (event != null && event.getActionMasked() == MotionEvent.ACTION_HOVER_EXIT) {
		if (event != null && event.getActionMasked() == ACTION_HOVER_EXIT) {
		final int pointerIdBits = event.getPointerIdBits();
		mDispatcher.sendMotionEvent(
		event,
		MotionEvent.ACTION_HOVER_ENTER,
		ACTION_HOVER_ENTER,
		mState.getLastReceivedEvent(),
		pointerIdBits,
		policyFlags);
		@@ -942,7 +943,7 @@ public class TouchExplorer extends BaseEventStreamTransformation
		if (mState.isDelegating()) {
		return false;
		}
		if (event.getActionMasked() == MotionEvent.ACTION_DOWN) {
		if (event.getActionMasked() == ACTION_DOWN) {
		final int x = (int) event.getX();
		final int y = (int) event.getY();
		if (mTouchExplorationPassthroughRegion.contains(x, y)
		@@ -969,7 +970,7 @@ public class TouchExplorer extends BaseEventStreamTransformation
		@Override
		public void run() {
		// Announce the end of gesture recognition.
		mDispatcher.sendAccessibilityEvent(AccessibilityEvent.TYPE_GESTURE_DETECTION_END);
		mDispatcher.sendAccessibilityEvent(TYPE_GESTURE_DETECTION_END);
		clear();
		}
		}
		@@ -1033,12 +1034,11 @@ public class TouchExplorer extends BaseEventStreamTransformation

		public void run() {
		// Send an accessibility event to announce the touch exploration start.
		mDispatcher.sendAccessibilityEvent(
		AccessibilityEvent.TYPE_TOUCH_EXPLORATION_GESTURE_START);
		mDispatcher.sendAccessibilityEvent(TYPE_TOUCH_EXPLORATION_GESTURE_START);

		if (!mEvents.isEmpty() && !mRawEvents.isEmpty()) {
		// Deliver a down event.
		mDispatcher.sendMotionEvent(mEvents.get(0), MotionEvent.ACTION_HOVER_ENTER,
		mDispatcher.sendMotionEvent(mEvents.get(0), ACTION_HOVER_ENTER,
		mRawEvents.get(0), mPointerIdBits, mPolicyFlags);
		if (DEBUG) {
		Slog.d(LOG_TAG_SEND_HOVER_DELAYED,
		@@ -1048,7 +1048,7 @@ public class TouchExplorer extends BaseEventStreamTransformation
		// Deliver move events.
		final int eventCount = mEvents.size();
		for (int i = 1; i < eventCount; i++) {
		mDispatcher.sendMotionEvent(mEvents.get(i), MotionEvent.ACTION_HOVER_MOVE,
		mDispatcher.sendMotionEvent(mEvents.get(i), ACTION_HOVER_MOVE,
		mRawEvents.get(i), mPointerIdBits, mPolicyFlags);
		if (DEBUG) {
		Slog.d(LOG_TAG_SEND_HOVER_DELAYED,
		@@ -1119,7 +1119,7 @@ public class TouchExplorer extends BaseEventStreamTransformation
		}
		mDispatcher.sendMotionEvent(
		mPrototype,
		MotionEvent.ACTION_HOVER_EXIT,
		ACTION_HOVER_EXIT,
		mRawEvent,
		mPointerIdBits,
		mPolicyFlags);