1 Reply Latest reply on May 15, 2013 10:00 AM by alsha

Controlling <rich:tree> selection from Java-Bean in RF4

alsha Apr 29, 2013 8:37 AM

Hi,

as i undestand, it can be reached using selection-attribute of <rich:tree>.

can anybody provide an example of correct usage of it? (I use <rich:treeModelRecursiveAdaptor> to represent the model)

Thanks in advance for any help,

Alexey

1. Re: Controlling <rich:tree> selection from Java-Bean in RF4

alsha May 15, 2013 10:00 AM (in response to alsha)

I use the following code to test selection attribute:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:a4j="http://richfaces.org/a4j" xmlns:rich="http://richfaces.org/rich"
  xmlns:h="http://java.sun.com/jsf/html" xml:lang="en" lang="en">
<h:head></h:head>
<h:body>
  <a4j:log hotkey="M" mode="popup" />
  <h:form>
    <rich:tree var="item"  selection="#{testBean.selection}">
      <rich:treeModelRecursiveAdaptor roots="#{testBean.roots}" nodes="#{item.children}">
        <rich:treeNode>
          <a4j:commandLink value="#{item.name}" />          
        </rich:treeNode>
      </rich:treeModelRecursiveAdaptor>
    </rich:tree>
  </h:form>
</h:body>
</html>

public class TestBean {

    private Collection<?> selection;

    public Collection<?> getSelection() {
        return selection;
    }

    public void setSelection(Collection<?> selection) {
        this.selection = selection;
    }

    public List<Map<String, Object>> getRoots () {
        List<Map<String, Object>> roots = new ArrayList<Map<String, Object>>();
        Map<String, Object> n1 = new HashMap<String, Object>();
        n1.put("name", "Node 1");
        Map<String, Object> n1_1 = new HashMap<String, Object>();
        n1_1.put("name", "Node 1_1");

        List<Map<String, Object>> children = new ArrayList<Map<String, Object>>();
        children.add(n1_1);
        n1.put("children", children);

        roots.add(n1);
        return roots;
    } 
}

If link in tree is clicked, selection-property of TestBean is initialized with HashSet-instance and the instance of SequenceRowKey (i.e. [org.richfaces.model.SequenceRowKey[DeclarativeModelKey{modelId=j_id_8, modelKey=0}]] ) is put in it.

So, if i want to manipulate the selection from java-bean side, i need to create my own instance of SequenceRowKey (corresponding to desired selection) and put it in this collection. To do this, I need component ids of tree nodes, so i must traverse UITree-component to find them. It is very inconvinient, in RF3 it was much simpler...

We are migrating from RF3 to RF4 and tree selection issue is currently a big problem for us. Please help!