am 030b38ff: Merge "Fix bug 4207704 - Gestures can be lost when Flash is... (2bb59637) · Commits · e / os / android_frameworks_base

core/java/android/webkit/WebView.java

+136 −21

Original line number	Diff line number	Diff line
		@@ -5584,6 +5584,7 @@ public class WebView extends AbsoluteLayout
		ted.mNativeLayer = nativeScrollableLayer(
		contentX, contentY, ted.mNativeLayerRect, null);
		ted.mSequence = mTouchEventQueue.nextTouchSequence();
		mTouchEventQueue.preQueueTouchEventData(ted);
		mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
		if (mDeferTouchProcess) {
		// still needs to set them for compute deltaX/Y
		@@ -5633,6 +5634,7 @@ public class WebView extends AbsoluteLayout
		ted.mNativeLayer = mScrollingLayer;
		ted.mNativeLayerRect.set(mScrollingLayerRect);
		ted.mSequence = mTouchEventQueue.nextTouchSequence();
		mTouchEventQueue.preQueueTouchEventData(ted);
		mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
		mLastSentTouchTime = eventTime;
		if (mDeferTouchProcess) {
		@@ -5817,6 +5819,7 @@ public class WebView extends AbsoluteLayout
		ted.mNativeLayer = mScrollingLayer;
		ted.mNativeLayerRect.set(mScrollingLayerRect);
		ted.mSequence = mTouchEventQueue.nextTouchSequence();
		mTouchEventQueue.preQueueTouchEventData(ted);
		mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
		}
		mLastTouchUpTime = eventTime;
		@@ -5842,6 +5845,7 @@ public class WebView extends AbsoluteLayout
		contentX, contentY,
		ted.mNativeLayerRect, null);
		ted.mSequence = mTouchEventQueue.nextTouchSequence();
		mTouchEventQueue.preQueueTouchEventData(ted);
		mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
		} else if (mPreventDefault != PREVENT_DEFAULT_YES){
		mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY);
		@@ -5988,6 +5992,7 @@ public class WebView extends AbsoluteLayout
		ted.mReprocess = true;
		ted.mMotionEvent = MotionEvent.obtain(ev);
		ted.mSequence = sequence;
		mTouchEventQueue.preQueueTouchEventData(ted);
		mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
		cancelLongPress();
		mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS);
		@@ -7205,9 +7210,17 @@ public class WebView extends AbsoluteLayout
		private long mNextTouchSequence = Long.MIN_VALUE + 1;
		private long mLastHandledTouchSequence = Long.MIN_VALUE;
		private long mIgnoreUntilSequence = Long.MIN_VALUE + 1;

		// Events waiting to be processed.
		private QueuedTouch mTouchEventQueue;

		// Known events that are waiting on a response before being enqueued.
		private QueuedTouch mPreQueue;

		// Pool of QueuedTouch objects saved for later use.
		private QueuedTouch mQueuedTouchRecycleBin;
		private int mQueuedTouchRecycleCount;

		private long mLastEventTime = Long.MAX_VALUE;
		private static final int MAX_RECYCLED_QUEUED_TOUCH = 15;

		@@ -7229,6 +7242,57 @@ public class WebView extends AbsoluteLayout
		*/
		public void ignoreCurrentlyMissingEvents() {
		mIgnoreUntilSequence = mNextTouchSequence;

		// Run any events we have available and complete, pre-queued or otherwise.
		runQueuedAndPreQueuedEvents();
		}

		private void runQueuedAndPreQueuedEvents() {
		QueuedTouch qd = mPreQueue;
		boolean fromPreQueue = true;
		while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) {
		handleQueuedTouch(qd);
		QueuedTouch recycleMe = qd;
		if (fromPreQueue) {
		mPreQueue = qd.mNext;
		} else {
		mTouchEventQueue = qd.mNext;
		}
		recycleQueuedTouch(recycleMe);
		mLastHandledTouchSequence++;

		long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE;
		long nextQueued = mTouchEventQueue != null ?
		mTouchEventQueue.mSequence : Long.MAX_VALUE;
		fromPreQueue = nextPre < nextQueued;
		qd = fromPreQueue ? mPreQueue : mTouchEventQueue;
		}
		}

		/**
		* Add a TouchEventData to the pre-queue.
		*
		* An event in the pre-queue is an event that we know about that
		* has been sent to webkit, but that we haven't received back and
		* enqueued into the normal touch queue yet. If webkit ever times
		* out and we need to ignore currently missing events, we'll run
		* events from the pre-queue to patch the holes.
		*
		* @param ted TouchEventData to pre-queue
		*/
		public void preQueueTouchEventData(TouchEventData ted) {
		QueuedTouch newTouch = obtainQueuedTouch().set(ted);
		if (mPreQueue == null) {
		mPreQueue = newTouch;
		} else {
		QueuedTouch insertionPoint = mPreQueue;
		while (insertionPoint.mNext != null &&
		insertionPoint.mNext.mSequence < newTouch.mSequence) {
		insertionPoint = insertionPoint.mNext;
		}
		newTouch.mNext = insertionPoint.mNext;
		insertionPoint.mNext = newTouch;
		}
		}

		private void recycleQueuedTouch(QueuedTouch qd) {
		@@ -7252,6 +7316,11 @@ public class WebView extends AbsoluteLayout
		mTouchEventQueue = mTouchEventQueue.mNext;
		recycleQueuedTouch(recycleMe);
		}
		while (mPreQueue != null) {
		QueuedTouch recycleMe = mPreQueue;
		mPreQueue = mPreQueue.mNext;
		recycleQueuedTouch(recycleMe);
		}
		}

		/**
		@@ -7274,6 +7343,28 @@ public class WebView extends AbsoluteLayout
		* @return true if the event was processed before returning, false if it was just enqueued.
		*/
		public boolean enqueueTouchEvent(TouchEventData ted) {
		// Remove from the pre-queue if present
		QueuedTouch preQueue = mPreQueue;
		if (preQueue != null) {
		// On exiting this block, preQueue is set to the pre-queued QueuedTouch object
		// if it was present in the pre-queue, and removed from the pre-queue itself.
		if (preQueue.mSequence == ted.mSequence) {
		mPreQueue = preQueue.mNext;
		} else {
		QueuedTouch prev = preQueue;
		preQueue = null;
		while (prev.mNext != null) {
		if (prev.mNext.mSequence == ted.mSequence) {
		preQueue = prev.mNext;
		prev.mNext = preQueue.mNext;
		break;
		} else {
		prev = prev.mNext;
		}
		}
		}
		}

		if (ted.mSequence < mLastHandledTouchSequence) {
		// Stale event and we already moved on; drop it. (Should not be common.)
		Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) +
		@@ -7285,23 +7376,24 @@ public class WebView extends AbsoluteLayout
		return false;
		}

		// dropStaleGestures above might have fast-forwarded us to
		// an event we have already.
		runNextQueuedEvents();

		if (mLastHandledTouchSequence + 1 == ted.mSequence) {
		if (preQueue != null) {
		recycleQueuedTouch(preQueue);
		preQueue = null;
		}
		handleQueuedTouchEventData(ted);

		mLastHandledTouchSequence++;

		// Do we have any more? Run them if so.
		QueuedTouch qd = mTouchEventQueue;
		while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) {
		handleQueuedTouch(qd);
		QueuedTouch recycleMe = qd;
		qd = qd.mNext;
		recycleQueuedTouch(recycleMe);
		mLastHandledTouchSequence++;
		}
		mTouchEventQueue = qd;
		runNextQueuedEvents();
		} else {
		QueuedTouch qd = obtainQueuedTouch().set(ted);
		// Reuse the pre-queued object if we had it.
		QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted);
		mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd);
		}
		return true;
		@@ -7323,12 +7415,24 @@ public class WebView extends AbsoluteLayout
		return;
		}

		// dropStaleGestures above might have fast-forwarded us to
		// an event we have already.
		runNextQueuedEvents();

		if (mLastHandledTouchSequence + 1 == sequence) {
		handleQueuedMotionEvent(ev);

		mLastHandledTouchSequence++;

		// Do we have any more? Run them if so.
		runNextQueuedEvents();
		} else {
		QueuedTouch qd = obtainQueuedTouch().set(ev, sequence);
		mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd);
		}
		}

		private void runNextQueuedEvents() {
		QueuedTouch qd = mTouchEventQueue;
		while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) {
		handleQueuedTouch(qd);
		@@ -7338,10 +7442,6 @@ public class WebView extends AbsoluteLayout
		mLastHandledTouchSequence++;
		}
		mTouchEventQueue = qd;
		} else {
		QueuedTouch qd = obtainQueuedTouch().set(ev, sequence);
		mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd);
		}
		}

		private boolean dropStaleGestures(MotionEvent ev, long sequence) {
		@@ -7363,13 +7463,16 @@ public class WebView extends AbsoluteLayout
		}

		// If we have a new down event and it's been a while since the last event
		// we saw, just reset and keep going.
		// we saw, catch up as best we can and keep going.
		if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) {
		long eventTime = ev.getEventTime();
		long lastHandledEventTime = mLastEventTime;
		if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) {
		Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " +
		"Ignoring previous queued events.");
		"Catching up.");
		runQueuedAndPreQueuedEvents();

		// Drop leftovers that we truly don't have.
		QueuedTouch qd = mTouchEventQueue;
		while (qd != null && qd.mSequence < sequence) {
		QueuedTouch recycleMe = qd;
		@@ -7392,6 +7495,17 @@ public class WebView extends AbsoluteLayout
		mLastHandledTouchSequence = mIgnoreUntilSequence - 1;
		}

		if (mPreQueue != null) {
		// Drop stale prequeued events
		QueuedTouch qd = mPreQueue;
		while (qd != null && qd.mSequence < mIgnoreUntilSequence) {
		QueuedTouch recycleMe = qd;
		qd = qd.mNext;
		recycleQueuedTouch(recycleMe);
		}
		mPreQueue = qd;
		}

		return sequence <= mLastHandledTouchSequence;
		}

		@@ -7641,6 +7755,7 @@ public class WebView extends AbsoluteLayout
		ted.mPoints[0].x, ted.mPoints[0].y,
		ted.mNativeLayerRect, null);
		ted.mSequence = mTouchEventQueue.nextTouchSequence();
		mTouchEventQueue.preQueueTouchEventData(ted);
		mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
		} else if (mPreventDefault != PREVENT_DEFAULT_YES) {
		mTouchMode = TOUCH_DONE_MODE;