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Update "requireGestureToFail" API implementation

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This commit is contained in:
Pavel fljot 2012-07-04 21:36:55 +03:00
parent 60d9cb6744
commit 2d52729f7c
1 changed files with 25 additions and 15 deletions
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40
src/org/gestouch/gestures/Gesture.as
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@ -299,6 +299,11 @@ package org.gestouch.gestures
public function requireGestureToFail(gesture:Gesture):void
{
//TODO
if (!gesture)
{
throw new ArgumentError();
}
_gesturesToFail[gesture] = true;
}
@ -406,14 +411,16 @@ package org.gestouch.gestures
if (newState == GestureState.BEGAN || newState == GestureState.RECOGNIZED)
{
var gestureToFail:Gesture;
var key:*;
// first we check if other required-to-fail gestures recognized
// TODO: is this really necessary? using "requireGestureToFail" API assume that
// required-to-fail gesture always recognizes AFTER this one.
for (var key:* in _gesturesToFail)
for (key in _gesturesToFail)
{
gestureToFail = key as Gesture;
if (gestureToFail.state != GestureState.IDLE && gestureToFail.state != GestureState.POSSIBLE
&& gestureToFail.state != GestureState.FAILED)
if (gestureToFail.state != GestureState.IDLE &&
gestureToFail.state != GestureState.POSSIBLE &&
gestureToFail.state != GestureState.FAILED)
{
// Looks like other gesture won't fail,
// which means the required condition will not happen, so we must fail
@ -421,7 +428,7 @@ package org.gestouch.gestures
return false;
}
}
// then we check of other required-to-fail gestures are actually tracked (not IDLE)
// then we check if other required-to-fail gestures are actually tracked (not IDLE)
// and not still not recognized (e.g. POSSIBLE state)
for (key in _gesturesToFail)
{
@ -430,6 +437,13 @@ package org.gestouch.gestures
{
// Other gesture might fail soon, so we postpone state change
_pendingRecognizedState = newState;
for (key in _gesturesToFail)
{
gestureToFail = key as Gesture;
gestureToFail.addEventListener(GestureStateEvent.STATE_CHANGE, gestureToFail_stateChangeHandler, false, 0, true);
}
return false;
}
// else if gesture is in IDLE state it means it doesn't track anything,
@ -528,12 +542,6 @@ package org.gestouch.gestures
if (_touchesCount == 1 && state == GestureState.IDLE)
{
for (var key:* in _gesturesToFail)
{
var gestureToFail:Gesture = key as Gesture;
gestureToFail.addEventListener(GestureStateEvent.STATE_CHANGE, gestureToFail_stateChangeHandler, false, 0, true);
}
setState(GestureState.POSSIBLE);
}
}
@ -557,10 +565,7 @@ package org.gestouch.gestures
protected function gestureToFail_stateChangeHandler(event:GestureStateEvent):void
{
if (state != GestureState.POSSIBLE)
return;//just in case..FIXME?
if (!_pendingRecognizedState)
if (!_pendingRecognizedState || state != GestureState.POSSIBLE)
return;
if (event.newState == GestureState.FAILED)
@ -575,13 +580,18 @@ package org.gestouch.gestures
}
}
// at this point all gestures-to-fail are either in IDLE or in FAILED states
if (setState(_pendingRecognizedState))
{
onDelayedRecognize();
}
}
else if (event.newState != GestureState.POSSIBLE)
else if (event.newState != GestureState.IDLE && event.newState != GestureState.POSSIBLE)
{
// NB: _other_ gesture may switch to IDLE state if it was in FAILED when
// _this_ gesture initially attempted to switch to one of recognized state.
// ...and that's OK (we ignore that)
setState(GestureState.FAILED);
}
}