OK, just to remind you, the problem here is making a LinkTree work within a
frameset, where the links may have CGI parameters.
Having tried Randy's suggestion, which I think brings me most of the way, I
get a runtime exception, so there's still a little bit to hammer out. I'm
wondering if the problem is that my page isn't in the PageMap, and if I have
to add it, and if I have to instantiate the page using reflection to add it
to the PageMap.
Here's the exception:
java.lang.IllegalStateException: No Page found for component
[MarkupContainer [Component id = nodeComponent, page = <No Page>, path =
nodeComponent.FrameLabelIconPanel]]
at org.apache.wicket.Component.getPage(Component.java:1706)
at org.apache.wicket.Component.urlFor(Component.java:3211)
...
This occurs in the course of my addComponents() call:
public class FrameLabelIconPanel extends Panel
{
private static final long serialVersionUID = 1L;
public FrameLabelIconPanel( String id, IModel model, FrameLinkTree tree,
final HorizontalFrameset responsePage )
{
super(id, model);
addComponents(model, tree, responsePage );
}
/*
* This fires for the icon
*/
protected void addComponents(IModel model, FrameLinkTree tree)
{
add(newImageComponent("icon", tree, model));
add(newContentComponent("content", tree, model));
}
/*
* Here's the meat of the problem
*/
protected void addComponents( final IModel model, final FrameLinkTree
tree,
final HorizontalFrameset responsePage )
{
BaseTree.ILinkCallback callback = new BaseTree.ILinkCallback()
{
private static final long serialVersionUID = 1L;
public void onClick(AjaxRequestTarget target)
{
onNodeLinkClicked(model.getObject(), tree, target);
}
};
MarkupContainer iconContainer = tree.newLink("iconLink", callback);
iconContainer.add(newImageComponent("icon", tree, model));
add( iconContainer );
SystemTreeNodeBean innerModel = ( SystemTreeNodeBean )( (
DefaultMutableTreeNode )model.getObject() ).getUserObject();
SystemTreeNodeBean.SystemNodeType nodeType =
innerModel.getNodeType();
Class<? extends org.apache.wicket.Page> pageClass =
getPageClass( nodeType
);
MarkupContainer link = null;
PageParameters params = null;
if ( innerModel.hasServiceId() )
{
params = new PageParameters();
params.put( "serviceid", innerModel.getServiceId() );
//--------> Here's where we crash
String strTargetURL = RequestUtils.toAbsolutePath( urlFor(
pageClass, params ).toString() );
link = tree.newLink( "contentLink", strTargetURL );
}
else
{
// No parameters, works fine
link = tree.newLink("contentLink", responsePage, pageClass );
}
link.add(newContentComponent("content", tree, model));
add(link);
}
Trace into the Wicket source code and you crash here:
public abstract class Component implements IClusterable, IConverterLocator
{
...
public final <C extends Page> CharSequence urlFor(final Class<C>
pageClass,
final PageParameters parameters)
{
return getRequestCycle().urlFor(getPage().getPageMap(),
pageClass,
parameters);
}
}
Seven Corners wrote:
>
> Well I was really grateful for that. I've tried both alternatives and
> neither works but I think maybe I just have to fiddle with them a bit.
> Just getting back to you before the end of the day.
>
> Thanks for the response.
>
>
>
> Randy Hammelman wrote:
>>
>> This will probably work for you:
>>
>> Isn't there a version of setResponsePage that takes a PageParameters
>> object?
>>
>> setResponsePage(Page.class, pageParameters);
>>
>> Otherwise, you can construct a url for a page with parameters using the
>> following code:
>>
>> PageParameters params = new PageParameters();
>> params .put(PARAM_NAME, PARAM_VALUE);
>> String targetURL =
>> RequestUtils.toAbsolutePath(urlFor(YOUR_CLASS.class,params ).toString());
>>
>> Use a link, such as ExternalLink, that takes a url.
>>
>>
>> Hope this helps.
>>
>>
>> On Fri, Oct 10, 2008 at 1:39 PM, Seven Corners <[EMAIL PROTECTED]>
>> wrote:
>>
>>>
>>> I have figured out the considerable gyrations to subclass a LinkTree so
>>> its
>>> leaves contain links that will change the page in another frame within a
>>> frameset, and I'm doing this with regular Links (i.e., href and target
>>> attributes, and setting the response page and the frame target's page
>>> class
>>> from Link.onClick(), as Eelco does in his Frames example):
>>>
>>> public class FrameLinkTree extends LinkTree
>>> {
>>> ...
>>> public MarkupContainer newLink( String strId, final
>>> HorizontalFrameset
>>> frameset, final Class pageClass )
>>> {
>>> Link link = new Link( strId )
>>> {
>>> private static final long serialVersionUID = 1L;
>>>
>>> @Override
>>> public void onClick()
>>> {
>>> frameset.getFrameTarget().setFrameClass( pageClass );
>>>
>>> // trigger re-rendering of the page
>>> setResponsePage( frameset );
>>> }
>>> };
>>> link.add( new SimpleAttributeModifier( "target", "_parent" ) );
>>> return link;
>>> }
>>> }
>>>
>>> However, my pages need a parameter in their constructors, so I'll need
>>> to
>>> pass that parameter from the link. It looks like the only link type
>>> that
>>> takes parameters is the BookmarkablePageLink. I would use this class so
>>> I
>>> could pass the parameters, only the BookmarkablePageLink doesn't use the
>>> onClick(). There's a comment in the BookmarkablePageLink code that
>>> BookmarkablePageLinks "are dispatched by the request handling servlet",
>>> so
>>> there's no way I can override that.
>>>
>>> So is there any way I can get a parameter on a Link, or is there any way
>>> I
>>> can set the frame target and response page on a BookmarkablePageLink?
>>>
>>> --
>>> View this message in context:
>>> http://www.nabble.com/Links-with-CGI-parameters--tp19923784p19923784.html
>>> Sent from the Wicket - User mailing list archive at Nabble.com.
>>>
>>>
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>>>
>>>
>>
>>
>
>
--
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