I'am trying to use the Tree with tapestry 4 also, i'am not done yet but
the error you get is because of one parameter being null
in :
if (state == null || contentProvider == null || keyProvider == null) {
throw new IllegalArgumentException();
}
So you should maybe first make sure that they are all not null.
Tim Sawyer <[EMAIL PROTECTED]> wrote :
I'm trying to use the Tacos Tree component but it seems to not work with
Tapestry 4. Has anyone done the work to produce a 4 version or am I going to
have to do it myself?
Am trying to do it myself, but the lack of documentation/error messages is
making it rather difficult.
I get
java.lang.IllegalArgumentException
Stack Trace:
* net.sf.tacos.tree.TreeManager.<init>(Unknown Source)
* net.sf.tacos.tree.Tree.getManager(Unknown Source)
* net.sf.tacos.tree.Tree.isExpanded(Unknown Source)
* net.sf.tacos.tree.Tree$TreeIter.getChildren(Unknown Source)
* net.sf.tacos.tree.TreeIterator.next(Unknown Source)
* org.apache.tapestry.components.Foreach.renderComponent(Foreach.java:94)
* org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:612)
*
org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:429)
* org.apache.tapestry.components.Any.renderComponent(Any.java:48)
* org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:612)
* org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:92)
on the page that uses the tree component. Does anyone know what this error
means?
Tim.
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