Problems with ZK

asked 2011-02-04 12:39:21 +0800

wnederhof
33 ● 2

Hello,

First, allow me to introduce myself. My name is Wouter Nederhof and I am a second year Computer Science student at the University of Groningen, the Netherlands. Besides my study I also own a business company with a few other people, developing medical software.

For the past few months now, I have been trying to learn all about the ZK framework, and I must say that this project is, to say the least, very interesting.

However, I found quite a few difficulties and problems with ZK, and I couldn't find the solutions by googling it, so I decided to post my issues using ZK on the forum.

The first problem I am having is the following:

I created a listbox in ZUL as following:

<listbox id="abc" apply="abc.ABCComposer">
<columns>
...
</columns>
<rows>
<row self="@{each=message}"
style="vertical-align: top;">
<label value="@{message.date}" />
<label value="@{message.author}" />
<label value="@{message.message}"
multiline="true" />
</row>
</rows>
</listbox>

Now, if I put a button on the page that, when the user clicks on the button, it will trigger an event that changes the model of this listbox, then all columns are filled in according to the template. However, if I set the model in the doAfterCompose function in the apply-class, it will remove all columns in the listbox and will replace them with a single column where the toString() value of the objects are presented.

What am I doing wrong here? Should I put the setModel-function elsewhere? Or should I call some kind of initialization function first?

The second problem is the following:

In order to fix the first problem, I have now created a ListitemRenderer (which I consider nothing more than a fast hack to just make it work). However, if I set the Listitemrenderer in the doAfterCompose function and select an item in the Listbox, it tells the apply-class that no items have been selected. That is, for example in the function onSelect$list, getSelectedItem() returns NULL and getSelectedIndex() returns -1. However, when I do NOT set the Listitemrenderer, then this problem will not occur.

What am I doing wrong where? Why won't the selectedItem change anymore after changing the renderer?

I hope someone can answer one or both these questions.

Thanks in advance!

Best regards,

Wouter Nederhof