Julien Blatecky created TAP5-2077:
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Summary: ElementWrapper#onevent jQuery implementation can return a
wrong ElementWrapper
Key: TAP5-2077
URL: https://issues.apache.org/jira/browse/TAP5-2077
Project: Tapestry 5
Issue Type: Bug
Components: tapestry-core
Affects Versions: 5.4
Reporter: Julien Blatecky
Attachments: elementwrapper.onevent.patch
Considers we bind an event on an element (<a> for example) and this element
contains some other element (<span> for instance).
The event that will be triggered returns an ElementWrapper wrapping the span
element if we clicked on span, instead of returning a wrapped element of the
<a> element.
Consequently, in the case of a a[data-update-zone] containing some span or img
elements, clicking on one of these elements raises a javascript error :
"Attempt to wrap a null DOM element" when handling the callback.
Indeed, in the wrapped callback (line 95 in the coffeescript jquery dom) the
ElementWrapper is instantiated with the "event.target" returned by jquery,
which is not the element on which we defined the event, but the deeper element
on which the event occurs. jQuery.com says "The target property can be the
element that registered for the event or a descendant of it.", whereas "this"
will be "the current DOM element within the event bubbling phase." just like
"event.currentTarget".
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