/*
* MyGWT Widget Library
* Copyright(c) 2007, MyGWT.
* licensing@mygwt.net
*
* http://mygwt.net/license
*/
package net.mygwt.ui.client.util;
import net.mygwt.ui.client.data.Model;
import net.mygwt.ui.client.widget.tree.Tree;
import net.mygwt.ui.client.widget.tree.TreeItem;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Element;
/**
* Various ways of populating trees.
*
* @see Tree
*/
public class TreeBuilder {
/**
* Populates a tree from existing dom elements. The tree item text is taken
* from the 'title' attribute of the element.
*
* @param tree the tree
* @param root the root element
*/
public static void buildTree(Tree tree, Element root) {
process(tree.getRootItem(), root);
}
/**
* Populates a tree from the given model.
*
* @param tree the tree
* @param model the model
*/
public static void buildTree(Tree tree, Model model) {
TreeItem root = tree.getRootItem();
for (int i = 0; i < model.getChildCount(); i++) {
Model m = model.getChild(i);
TreeItem item = new TreeItem();
item.setText(m.toString());
root.add(item);
process(item, m);
}
}
private static void process(TreeItem parentItem, Model model) {
for (int i = 0; i < model.getChildCount(); i++) {
Model m = model.getChild(i);
TreeItem item = new TreeItem();
item.setText(m.toString());
parentItem.add(item);
process(item, m);
}
}
private static void process(TreeItem item, Element parent) {
int size = DOM.getChildCount(parent);
for (int i = 0; i < size; i++) {
Element li = DOM.getChild(parent, i);
TreeItem childItem = new TreeItem();
String id = DOM.getElementAttribute(li, "id");
if (id != null && !id.equals("")) {
childItem.setId(id);
}
childItem.setText(DOM.getElementProperty(li, "title"));
item.add(childItem);
for (int j = 0; j < DOM.getChildCount(li); j++) {
Element subList = DOM.getChild(li, j);
process(childItem, subList);
}
}
}
}