Tree - drag&drop nodes

[manu_tmu]

Hi,

I have a problem related to a smartgwt Tree structure.
I'm creating a Tree (called nodesTree) with values from a DB, and each node has a name set up.
For ex I'm having 4 nodes (the numbers are the names of the nodes):
1
--2
3
--4
(ignore '--')

for (TreeNode node : nodesTree.getAllNodes()){
        System.out.print(node.getName());
}

Output: 1 2 3 4

If I drag node 4 under node 1(at the same level as 2)
1
--2
--4
3
(ignore '--')

I want to have the order of nodes: 1 2 4 3 but if I repeat the above "for" statement the output will be the same as above: 1 2 3 4.

TreeGrid.refreshFields() does not work.

I'm using smartgwt 2.4.

Thank you.

------------------------------------
Later edit:

The tree is manually populated. I'm adding the nodes to the tree manually from code, accoding to some values that I'm receiving from DB.

 
    Tree nodesTree = new Tree();
    TreeGrid navTreeGrid = new TreeGrid();
    navTreeGrid.setData(nodesTree);
    navTreeGrid.setCanReorderRecords(true); 
    navTreeGrid.setCanReparentNodes(true);

[manu_tmu]

Added the entry point class below.
In the method resetNodesAttributes which is called from onDrop method (from addDropHandler) I want to have the new order of nodes after drag&drop action was made

Please help me resolving this issue.

package de.vogella.gwt.helloworld.client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.RootPanel;
import com.smartgwt.client.types.TreeModelType;
import com.smartgwt.client.widgets.events.DropEvent;
import com.smartgwt.client.widgets.events.DropHandler;
import com.smartgwt.client.widgets.tree.Tree;
import com.smartgwt.client.widgets.tree.TreeGrid;
import com.smartgwt.client.widgets.tree.TreeNode;

public class HelloGwt implements EntryPoint {
	
	private static final String NAVPATH_ROOT = "/";
	Tree nodesTree = null;
	
	@Override
	public void onModuleLoad() {
		// Tree structure
		nodesTree = new Tree();
		nodesTree.setRootValue(NAVPATH_ROOT);
		nodesTree.setModelType(TreeModelType.PARENT);

		TreeGrid navTreeGrid = new TreeGrid();
		navTreeGrid.setCanReorderRecords(true);
		navTreeGrid.setCanReparentNodes(true);
		navTreeGrid.setData(nodesTree);

		// add first node
		TreeNode newNode = new TreeNode();
		newNode.setName("a");
		nodesTree.add(newNode, NAVPATH_ROOT);

		// add the second node
		newNode = new TreeNode();
		newNode.setName("ab");
		nodesTree.add(newNode, NAVPATH_ROOT);

		// add the third node to the tree 
		newNode = new TreeNode();
		newNode.setName("abc");
		nodesTree.add(newNode, NAVPATH_ROOT);

		navTreeGrid.addDropHandler(new DropHandler() {
			@Override
			public void onDrop(DropEvent event) {
				resetNodesAttributes(); 
			}
		});
	
		RootPanel.get().add(navTreeGrid);
	}
	
	public void resetNodesAttributes() {
            // here I want to have the new order of nodes after drag&drop action was made
	    for (TreeNode node : nodesTree.getAllNodes()) {
	       System.out.println(node.getName());
	    }
	}
 
}

[manu_tmu]

Resolved by wrapping the output in a

DeferredCommand

.