I'm confused on how to access a CompoundPropertyModel from within a
child Panel. I set a CompountPropertyModel in a parent panel. But
doing a getModel() in the child panel returns null. I thought that
wicket would hunt back up the component tree to find an appropriate
CompountPropertyModel. How should I do this?
Here is the parent, where I set the CPM:
public class RatingDisplayPanel extends Panel {
public RatingDisplayPanel(String id, RatingsModel ratings) {
super(id);
setModel(new CompoundPropertyModel(ratings));
add(new StarDisplay("facility", RatingBean.STARS));
}
}
Here is the child, where I do a getModel() and it returns null:
public class StarDisplay extends Panel {
private int width = 0;
public StarDisplay(String id, List choices) {
super(id);
int size = 0;
if (choices != null) {
size = choices.size();
if (getModel() != null) {
index =
choices.indexOf(getModel().getObject(this));
}
this.width = (index + 1)*100/size;
WebMarkupContainer on = new WebMarkupContainer("on");
on.add(new AttributeModifier("style", true, new Model()
{
public Object getObject(final Component
component) {
return "width: "+width+"%";
}
}));
add(on);
}
}
}
I have it working right now by passing the model like this, but I want
to simplify the code in my parent panel:
add(new StarDisplay("facility", new PropertyModel(ratings,
"facility"), RatingBean.STARS));
I thought perhaps I should use getNestedModel(), but it doesn't exist
in a panel. Any help is appreciated!
Tauren
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