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JBoss.orgCommunity Documentation
The <rich:changeExpandListener> represents an action listener method that is notified on an expand/collapse event on the node.
Table 6.200. rich : changeExpandListener attributes
| Attribute Name |
Description
|
|---|---|
| binding | JSF: The attribute takes a value-binding expression for a component property of a backing bean |
| type | HTML: The fully qualified Java class name for the listener |
Table 6.201. Component identification parameters
| Name | Value |
|---|---|
| listener-class | org.richfaces.event.NodeExpandedListener |
| event-class | org.richfaces.event.NodeExpandedEvent |
| tag-class | org.richfaces.taglib.ChangeExpandListenerTag |
To create the simplest variant on a page use the following syntax:
Example:
...
<rich:changeExpandListener type="demo.Bean"/>
...
Example:
package demo;
public class ImplBean implements org.richfaces.event.NodeExpandedListener{
...
}
import demo.ImplBean;
...
ImplBean myListener = new ImplBean();
...
The <rich:changeExpandListener> is used as a nested tag with <rich:tree> and <rich:treeNode> components.
Attribute
"type"
defines the fully qualified Java class name for the listener.
This class should implement
org.richfaces.event.NodeExpandedListener
interface.
The typical variant of using:
...
<rich:tree switchType="server" value="#{project.data}" var="item" nodeFace="#{item.type}">
<rich:changeExpandListener type="demo.ListenerBean"/>
...
<!-- Tree nodes -->
...
</rich:tree>
...
Java bean source:
package demo;
import org.richfaces.event.NodeExpandedEvent;
public class ListenerBean implements org.richfaces.event.NodeExpandedListener{
...
public void processExpansion(NodeExpandedEvent arg0){
//Custom Developer Code
}
...
}
...