what you are doing is fine because you are wrapping the model, not changing it
but also see PropertyListView
-igor
On Nov 16, 2007 1:29 PM, TheMayor <[EMAIL PROTECTED]> wrote:
>
> Hello All,
>
> I love to use CompoundPropertyModel whenever I can, and I had a debate today
> on how to appropriately use it within a ListView.
>
> Here is the markup, this is the start of the implementation of a message
> panel:
> <!--
> <table>
> <tr wicket:id="customerReceivedMessages">
> <td width="15px">Ic</td>
> <td width="auto">
> Some message -
> Some Summary text...</td>
> <td width="15px"> </img></td>
> <td width="10%">Time</td>
> </tr>
> </table>
> -->
> in the java code I set the model of the page initially:
>
> setModel(new CompoundPropertyModel(leadModel));
>
> And then when it is time to list all the messages, I use the following code
> which corresponds to the markup
>
> ListView messages = new ListView("customerReceivedMessages") {
>
> @Override
> protected void populateItem(ListItem item) {
>
> item.setModel(new CompoundPropertyModel(item.getModel()));
>
> item.add(new Label("subject"));
> item.add(new Label("text"));
>
> StaticImage attachIcon = new StaticImage("attachmentIcon", new
> Model("/_media/paperclip.gif"));
> if(cm.getFileName() == null || cm.getFileName().equals("")) {
> attachIcon.setVisible(false);
> }
> item.add(attachIcon);
> item.add(new Label("summaryTime"));
>
> }
>
>
> Now the issue is that my architect, who is more experienced wicket told me
> that I should not be changing the model of item to a CompoundPropertyModel,
> since ListView is in charge of controlling that model. The code works, but I
> do get some undesirable side effects, for example:
>
> ConversationMessage cm = (ConversationMessage) item.getModelObject();
>
> will not work after I call setModel on item, even though the
> CompoundPropertyModel should have the same ModelObject
> (ConversationMessage).
>
> so 2 questions:
>
> Can you confirm that I am doing something wrong here?
> How can I cleanly still use CompoundPropertyModel within the populateItem so
> that I can keep the code without all those PropertyModel instantiations I
> would have to do with the absence of a CompoundPropertyModel?
>
>
> Thanks for taking a look at this.
> Hassan Chafi
> http://www.genietown.com GenieTown @ your service
>
>
>
> --
> View this message in context:
> http://www.nabble.com/Changing-the-model-of-a-ListView-item-to-use-CompoundPropertyModel-tf4824021.html#a13801970
> Sent from the Wicket - User mailing list archive at Nabble.com.
>
>
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