Hello!
I've tried to write a simple tree in tacos on the source of the
TacosDemo application, but when I click the expand button nothing
happens the URL changes, but the root remain closed. I think I miss
something, but I couldn't figure out what. I paste here my code, maybe
someone can help me:
WithBestRegards,
Istvan
Home.html:
<body jwcid="@Body" title="Simple Tree">
<div jwcid="tree" id="tree">
<span jwcid="@Insert" value="ognl:item.name"/>
</div>
</body>
Home.page:
<page-specification class="com.ttdev.tacostree.Home">
<description>Tree Demo</description>
<property name="item" />
<component id="tree" type="tacos:Tree">
<binding name="contentProvider" value="contentProvider"/>
<binding name="value" value="item"/>
<binding name="nodeLinkAjax" value="ognl:false" />
</component>
</page-specification>
Home.java:
package com.ttdev.tacostree;
import org.apache.tapestry.html.BasePage;
import net.sf.tacos.model.ITreeContentProvider;
public abstract class Home extends BasePage {
//ITreeContentProvider content;
public ITreeContentProvider getContentProvider() {
return new ContentProvider();
}
}
ContentProvider.java:
package com.ttdev.tacostree;
import java.util.*;
import net.sf.tacos.model.ITreeContentProvider;
public class ContentProvider
implements ITreeContentProvider
{
public ContentProvider()
{
ROOTS = new ArrayList();
Folder root = new Folder("Root");
root.folder("One");
root.folder("Two");
ROOTS.add(root);
}
public Item getItemByName(String name) {
int index=ROOTS.indexOf(name);
return (Item)ROOTS.get(index);
}
public List getElements()
{
return ROOTS;
}
public boolean hasChildren(Object parentElement)
{
if(parentElement instanceof Folder)
{
Folder folder = (Folder)parentElement;
return !folder.getFolders().isEmpty() ||
!folder.getItems().isEmpty();
} else
{
return false;
}
}
public Collection getChildren(Object parentElement)
{
if(parentElement instanceof Folder)
{
Folder folder = (Folder)parentElement;
List l = new ArrayList();
l.addAll(folder.getFolders());
l.addAll(folder.getItems());
return l;
} else
{
return Collections.EMPTY_LIST;
}
}
public Object getParent(Object childElement)
{
return ((Item)childElement).getParent();
}
private static List ROOTS;
}
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