Enable longpress and doubletap to WebKit as touch (5f68d6fa) · Commits · e / os / android_frameworks_base

core/java/android/webkit/WebView.java

+49 −5

Original line number	Diff line number	Diff line
		@@ -365,6 +365,19 @@ public class WebView extends AbsoluteLayout
		private static final int PREVENT_DRAG_YES = 2;
		private int mPreventDrag = PREVENT_DRAG_NO;

		// by default mPreventLongPress is false. If it is true, long press event
		// will be handled by WebKit instead of UI.
		private boolean mPreventLongPress = false;
		// by default mPreventDoubleTap is false. If it is true, double tap event
		// will be handled by WebKit instead of UI.
		private boolean mPreventDoubleTap = false;

		// this needs to be in sync with the logic in WebKit's
		// EventHandler::handleTouchEvent()
		private static final int TOUCH_PREVENT_DRAG = 0x1;
		private static final int TOUCH_PREVENT_LONGPRESS = 0x2;
		private static final int TOUCH_PREVENT_DOUBLETAP = 0x4;

		// To keep track of whether the current drag was initiated by a WebTextView,
		// so that we know not to hide the cursor
		boolean mDragFromTextInput;
		@@ -3044,8 +3057,8 @@ public class WebView extends AbsoluteLayout
		if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) {
		mTouchMode = TOUCH_SHORTPRESS_MODE;
		HitTestResult hitTest = getHitTestResult();
		if (hitTest != null &&
		hitTest.mType != HitTestResult.UNKNOWN_TYPE) {
		if (mPreventLongPress \|\| (hitTest != null &&
		hitTest.mType != HitTestResult.UNKNOWN_TYPE)) {
		mPrivateHandler.sendMessageDelayed(mPrivateHandler
		.obtainMessage(SWITCH_TO_LONGPRESS),
		LONG_PRESS_TIMEOUT);
		@@ -3912,6 +3925,8 @@ public class WebView extends AbsoluteLayout
		mTouchMode = TOUCH_INIT_MODE;
		mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES
		: PREVENT_DRAG_NO;
		mPreventLongPress = false;
		mPreventDoubleTap = false;
		mWebViewCore.sendMessage(
		EventHub.UPDATE_FRAME_CACHE_IF_LOADING);
		if (mLogEvent && eventTime - mLastTouchUpTime < 1000) {
		@@ -4115,7 +4130,16 @@ public class WebView extends AbsoluteLayout
		case TOUCH_DOUBLE_TAP_MODE: // double tap
		mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS);
		mTouchMode = TOUCH_DONE_MODE;
		if (mPreventDoubleTap) {
		WebViewCore.TouchEventData ted
		= new WebViewCore.TouchEventData();
		ted.mAction = WebViewCore.ACTION_DOUBLETAP;
		ted.mX = viewToContentX((int) x + mScrollX);
		ted.mY = viewToContentY((int) y + mScrollY);
		mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
		} else {
		doDoubleTap();
		}
		break;
		case TOUCH_SELECT_MODE:
		commitCopy();
		@@ -4143,6 +4167,8 @@ public class WebView extends AbsoluteLayout
		// if mPreventDrag is not confirmed, treat it as
		// no so that it won't block tap or double tap.
		mPreventDrag = PREVENT_DRAG_NO;
		mPreventLongPress = false;
		mPreventDoubleTap = false;
		}
		if (mPreventDrag == PREVENT_DRAG_NO) {
		if (mTouchMode == TOUCH_INIT_MODE) {
		@@ -5090,6 +5116,8 @@ public class WebView extends AbsoluteLayout
		// it won't block panning the page.
		if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) {
		mPreventDrag = PREVENT_DRAG_NO;
		mPreventLongPress = false;
		mPreventDoubleTap = false;
		}
		if (mTouchMode == TOUCH_INIT_MODE) {
		mTouchMode = TOUCH_SHORTPRESS_START_MODE;
		@@ -5100,7 +5128,15 @@ public class WebView extends AbsoluteLayout
		break;
		}
		case SWITCH_TO_LONGPRESS: {
		if (mPreventDrag == PREVENT_DRAG_NO) {
		if (mPreventLongPress) {
		mTouchMode = TOUCH_DONE_MODE;
		WebViewCore.TouchEventData ted
		= new WebViewCore.TouchEventData();
		ted.mAction = WebViewCore.ACTION_LONGPRESS;
		ted.mX = viewToContentX((int) mLastTouchX + mScrollX);
		ted.mY = viewToContentY((int) mLastTouchY + mScrollY);
		mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted);
		} else if (mPreventDrag == PREVENT_DRAG_NO) {
		mTouchMode = TOUCH_DONE_MODE;
		performLongClick();
		rebuildWebTextView();
		@@ -5343,10 +5379,18 @@ public class WebView extends AbsoluteLayout
		// dont override if mPreventDrag has been set to no due
		// to time out
		if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) {
		mPreventDrag = msg.arg2 == 1 ? PREVENT_DRAG_YES
		mPreventDrag = (msg.arg2 & TOUCH_PREVENT_DRAG)
		== TOUCH_PREVENT_DRAG ? PREVENT_DRAG_YES
		: PREVENT_DRAG_NO;
		if (mPreventDrag == PREVENT_DRAG_YES) {
		mTouchMode = TOUCH_DONE_MODE;
		} else {
		mPreventLongPress =
		(msg.arg2 & TOUCH_PREVENT_LONGPRESS)
		== TOUCH_PREVENT_LONGPRESS;
		mPreventDoubleTap =
		(msg.arg2 & TOUCH_PREVENT_DOUBLETAP)
		== TOUCH_PREVENT_DOUBLETAP;
		}
		}
		}

core/java/android/webkit/WebViewCore.java

+8 −3

Original line number	Diff line number	Diff line
		@@ -515,7 +515,7 @@ final class WebViewCore {
		private native void nativeTouchUp(int touchGeneration,
		int framePtr, int nodePtr, int x, int y);

		private native boolean nativeHandleTouchEvent(int action, int x, int y);
		private native int nativeHandleTouchEvent(int action, int x, int y);

		private native void nativeUpdateFrameCache();

		@@ -712,8 +712,13 @@ final class WebViewCore {
		int mY;
		}

		// mAction of TouchEventData can be MotionEvent.getAction() which uses the
		// last two bytes or one of the following values
		static final int ACTION_LONGPRESS = 0x100;
		static final int ACTION_DOUBLETAP = 0x200;

		static class TouchEventData {
		int mAction; // MotionEvent.getAction()
		int mAction;
		int mX;
		int mY;
		}
		@@ -1130,7 +1135,7 @@ final class WebViewCore {
		mWebView.mPrivateHandler,
		WebView.PREVENT_TOUCH_ID, ted.mAction,
		nativeHandleTouchEvent(ted.mAction, ted.mX,
		ted.mY) ? 1 : 0).sendToTarget();
		ted.mY)).sendToTarget();
		break;
		}