Re: chrome vs firefox: on mouse leave/enter event

On Feb 14, 9:58 am, Thomas Broyer <t.bro...@gmail.com> wrote:
> I don't have time to try it out with GWT, sorry, but just to add some input
> to the possible issue: mouseover and mouseout events bubble, so if your
> mouse enters a child element of the B widget's root element, the event will
> bubble up to B's root element. GWT filters those events out in
> Widget#onBrowserEvent's default implementation to somehow mimic IE's (and
> now HTML5's / DOM3 Events') mouseenter and mouseleave events:http://code.google.com/p/google-web-toolkit/source/browse/trunk/user/...

thomas, hi, thanks for pointing this out. what we had was using
DOM.eventGetFromElement for mouseover, whereas the code in GWT uses
eventGetToElement.

i've modified the equivalent pyjamas code to this:

elif etype == "mouseover":
to_element = DOM.eventGetToElement(event)
if to_element and not DOM.isOrHasChild(sender.getElement(),
to_element):
for listener in listeners:
listener.onMouseEnter(sender)
return True
elif etype == "mouseout":
to_element = DOM.eventGetToElement(event)
if to_element and not DOM.isOrHasChild(sender.getElement(),
to_element):
for listener in listeners:
listener.onMouseLeave(sender)
return True
return False

where it is this in java:

public void onBrowserEvent(Event event) {
switch (DOM.eventGetType(event)) {
case Event.ONMOUSEOVER:
// Only fire the mouse over event if it's coming from outside
this
// widget.
case Event.ONMOUSEOUT:
// Only fire the mouse out event if it's leaving this
// widget.
Element related = event.getRelatedEventTarget().cast();
if (related != null && getElement().isOrHasChild(related)) {
return;
}
break;
}
DomEvent.fireNativeEvent(event, this, this.getElement());
}

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