That would work except that I still have the problem of removing the
behavior from the list while the list is being iterated. Also, this uses
the api in a way that doesn't match up with the wicket documentation,
and I know that will cause some grief down the road.
thx,
jim
Eelco Hillenius wrote:
On second thought... can't you use the detach method of behaviours?
This has the same effect as onEndRequest.
Eelco
On 1/26/06, Jim McLaughlin <[EMAIL PROTECTED]> wrote:
That would be great. I would prefer my custom components know as little
as possible about what the behavior needs to do.
thx,
jim
Eelco Hillenius wrote:
If you work with custom components, you could override onEndRequest
and do the work there. I thought that this issue might come up some
time, and kind of expected we might want to implement life cycle call
backs (onBeginRequest, onEndRequest) on behaviours some day. I didn't
implement it right away, as I first wanted us to get across a use case
where this would actually be wanted. This might be such a use case.
Eelco
On 1/26/06, Juergen Donnerstag <[EMAIL PROTECTED]> wrote:
May be we could implement a class Behaviors which provdes an interface
similar to List which provides "secure" implementations of e.g.
remove().
Juergen
On 1/26/06, Jim McLaughlin <[EMAIL PROTECTED]> wrote:
What I would like to do have the behavior remove itself by calling
component.getBehaviors ().remove (this); in its rendered() method (this
is the last method called on the Behavior during the request cycle,
right?). I don't believe this is safe since the behavior list is being
iterated at that point. Any ideas how and where this can be done?
thx,
jim
Juergen Donnerstag wrote:
It should be possible. Component.getBehaviors().remove(myBehavior)
Juergen
On 1/26/06, Martijn Dashorst <[EMAIL PROTECTED]> wrote:
I ran into the same question yesterday.
Usecase:
singleton attributemodifier.
in css:
.hidden {
display : none;
}
in html:
<html>
<body>
<div wicket:id="foo">
</div>
<div wicket:id="bar">
</div>
</body>
</html>
in Java:
class MyModifiers {
private static AttributeModifier hider = new ClassAttributeModifier();
public static void hide(Component comp) {
comp.add(hider);
}
public static void show(Component comp) {
comp.remove(hider);
}
}
class MyPage {
MyPage() {
MarkupContainer foo = new MarkupContainer("foo");
MarkupContainer bar = new MarkupContainer("bar");
if(somecondition) {
MyModifiers.hide(foo);
MyModifiers.show(bar);
} else {
MyModifiers.show(foo);
MyModifiers.hide(bar);
}
}
}
On 1/26/06, Eelco Hillenius <[EMAIL PROTECTED]> wrote:
I don't really understand how/ where/ when you would do the add/
remove operation. However, I can't think of anything against the
option of removing behaviors either.
Eelco
On 1/25/06, Jim McLaughlin <[EMAIL PROTECTED]> wrote:
Yes my behavior is smart enough not to do its transform if the
RequestTarget isn't of the right type, but what I really want to do is
add the behavior only if the RequestTarget is a ComponentRequestTarget,
and then remove it once that request cycle is done. That way it is only
there if it is needed, and not by default, and not when the user does a
full page refresh for the next request. Like you said, it can be coded
around. But there is a use for removing behaviors, and it would be
pleasant to have it supported :). Should I open an rfe?
thx,
jim
Eelco Hillenius wrote:
I think the best you can do is make your behavior smart enough so that
it doesn't do anything after it did it's transform.
Eelco
On 1/25/06, Jim McLaughlin <[EMAIL PROTECTED]> wrote:
Is it possible to remove a behavior from a component? I have created a
MarkupEscapeTransformer and would like to remove it after the transform
has occurred. If it is possible, where in the request cycle should it
happen?
thanks,
jim
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Wicket 1.1 is out: http://wicket.sourceforge.net/wicket-1.1
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