Help. GenericForwardComposer Problem, Event Handler

asked 2009-05-13 03:34:29 +0800

ahn
18 ● 1

updated 2009-05-13 08:09:15 +0800

hi, I'm elemetry developver Andrew..
I used GenericForwardComposer Class. please help me..

Java

public class MyClass extends GenericForwardComposer{
    public void onCreate$myPanel(Event event) {
        alert("onCreate ME!!");
    }
}

zul

 
<zul>
<window apply="MyClass">
  <tablelayout>
    <tablechildren>
       <panel id="myPanel">
       </panel>
    </tablechildren>
  </tablelayout>
</window>
<zul>

when panel component was created, onCreate Event Handler was not catched.
what is that problem?

please,, help me...

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answered 2009-05-13 03:54:24 +0800

hideokidd
750 ● 1 ● 2

updated 2009-05-13 03:55:56 +0800

Hi,

I thinks the onCreate event is not triggered at wanted timing,
you need doAfterCompose method to help you bind all components,
please refer to the smalltalk
http://docs.zkoss.org/wiki/ZK_MVC_Made_Easy
the sample code MyComposer6.java may help.

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answered 2009-05-13 04:10:17 +0800

ahn
18 ● 1

updated 2009-05-13 08:21:05 +0800

Thanks, hideokidd

that's sample is implementing Composer.
i already did that in GenericForwardComposer..
in detail,,

public class MyClass extends GenericForwardComposer{ 
    public void doAfterCompose(Component comp) throws Exception {
		super.doAfterCompose(comp);		
}

i catched onChange event at Textbox component like that "MyCompser6.java", but i cannot catch "onCreate" event.
In the Window Component, It catch onCreate Event (public onCreate$WinComponent(Event event)) .
But other component cannot catch onCreate Event.

Is there good method?

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answered 2009-05-13 04:27:38 +0800

hideokidd
750 ● 1 ● 2

Hi,

I encountered the same case,
but it's interesting that forward event works,
please try

java

public void onCreatePanel(Event event) {
alert("onCreate ME!!");
}

zul

<panel id="myPanel" forward="onCreate=onCreatePanel">

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answered 2009-05-13 08:04:31 +0800

ahn
18 ● 1

updated 2009-05-13 08:17:01 +0800

Thanx again.

That's very good idea for me.
Then, I encounter the another problem.
In your second solution, "forward attribute" call the "onCreate" method before components rendered completely.
in your method,

public void onCreatePanel(Event event) {
alert("onCreate ME!!");
}

It is not problem general case like that "alert()" function.
But I have to control zul's component in this method.

In my case,

public void onCreatePanel(Event event) {
alert("onCreate ME!!");
myPanel.setVisible(false);
}

it's impossible. because "myPanel" component is not loaded yet.
any other solution?

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answered 2009-05-13 16:12:04 +0800

ahn
18 ● 1

updated 2009-05-13 16:13:34 +0800

hi,

I'm mistake,
your method is right.
<<forward="onCreate=onCreatePanel">>

That's good iead!
I've solved this problem.

By the way, why did the event handler couldn't catch "onCreate" event?
is this ZK's bug???

thanks "hideokidd"!!

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answered 2009-05-14 01:06:29 +0800

hideokidd
750 ● 1 ● 2

Hi,

I think that's life cycle or composer mechanism issue,
there is a small talk about composer,
http://docs.zkoss.org/wiki/An_Introduction_of_ZK_Composer
maybe zk team will fix the specification problem in the future.