I meant something like:
===
import org.apache.wicket.Component;
import org.apache.wicket.markup.html.panel.Panel;
public abstract class CondiotionalPanel extends Panel {
private static final long serialVersionUID = 1L;
public CondiotionalPanel(String id) {
super(id);
setOutputMarkupId(true);
}
@Override
protected void onBeforeRender() {
if(getContidion())
addOrReplace(onTrueState(child));
else
addOrReplace(onFalseState(child));
super.onBeforeRender();
}
protected abstract Component onTrueState(String id);
protected abstract Component onFalseState(String id);
protected abstract boolean getContidion();
}
ConditionaPanel.html
html
xmlns:wicket=http://wicket.apache.org/dtds.data/wicket-xhtml1.4-strict.dtd;
body
wicket:panel
div wicket:id=content/div
/wicket:panel
/body
/html
CondiotionalPanel condionalPanel= new CondiotionalPanel(myid){
private static final long serialVersionUID = 1L;
@Override
protected Component onFalseState(String id) {
return new EmptyPanel(id);
}
@Override
protected Component onTrueState(String id) {
return new MyTablePanel(id);
}
@Override
protected boolean getContidion() {
return tableHasElements;
}
};
when you update this panel (condionalPanel) via AJAX request target.
Ernesto
On Wed, Jun 30, 2010 at 3:44 PM, Ernesto Reinaldo Barreiro
reier...@gmail.com wrote:
Hi Steve,
I would do the following (which might not be the best solution;-):
1- Create panel EmptyOrTablePanel with setOutputMarkupId(true);
2- and then have a child of this panel that either displays an
EmptyPanel or your table: depending on whether you have records or
not. You could determine that on the onBeforeRender of
EmptyOrTablePanelpanel and use addOrReplace to put the table or the
EmptyPanel.
3- Just tell this panel to update itself after AJAX operations.
Best,
Ernesto
On Wed, Jun 30, 2010 at 3:29 PM, Steve Hiller sh...@bellsouth.net wrote:
Hi All,
I have what seems like a strange problem with refreshing a DataView.
I have a WebMarkupContainer that contains a DataView.
The DataView uses a SortableDataProvider as its DataProvider.
The WebMarkupContainer uses the DataView's SortableDataProvider
to determine if there are any items to be displayed within the DataView.
If there any items then the WebMarkupContainer's isVisible() method
returns true, and therefore the WebMarkupContainer and DataView should
be rendered.
I am also using a ModalWindow to add new items to the DataView.
On exiting from the ModalWindow, I am using an AjaxRequestTarget
to refresh the WebMarkupContainer and therefore redraw the DataView
with the new item added to it.
This all works fine IF there were already items in the DataView when
it was first rendered during the initial loading of its page.
If the DataView is initially empty then the WebMarkupContainer
is not rendered as expected on page load. My issue is that adding new
items via the ModalWindow does not cause the WebMarkupContainer and
DataView to be rendered. Via debugging, I can see that the
WebMarkupContainer's isVisible() method is returning true yet nothing
appears.
Any suggestions on resolving this issue would be appreciated.
Thanks so much,
Steve
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