BasicTreePanelExample.java

/*
 * Ext GWT - Ext for GWT
 * Copyright(c) 2007-2009, Ext JS, LLC.
 * licensing@extjs.com
 * 
 * http://extjs.com/license
 */
package com.extjs.gxt.samples.client.examples.treepanel;

import com.extjs.gxt.samples.resources.client.Resources;
import com.extjs.gxt.samples.resources.client.TestData;
import com.extjs.gxt.samples.resources.client.model.Folder;
import com.extjs.gxt.ui.client.data.ModelData;
import com.extjs.gxt.ui.client.event.ButtonEvent;
import com.extjs.gxt.ui.client.event.SelectionListener;
import com.extjs.gxt.ui.client.store.TreeStore;
import com.extjs.gxt.ui.client.widget.LayoutContainer;
import com.extjs.gxt.ui.client.widget.button.Button;
import com.extjs.gxt.ui.client.widget.button.ButtonBar;
import com.extjs.gxt.ui.client.widget.layout.FlowData;
import com.extjs.gxt.ui.client.widget.treepanel.TreePanel;
import com.google.gwt.user.client.Element;

public class BasicTreePanelExample extends LayoutContainer {

  @Override
  protected void onRender(Element parent, int pos) {
    super.onRender(parent, pos);

    Folder model = TestData.getTreeModel();

    TreeStore<ModelData> store = new TreeStore<ModelData>();
    store.add(model.getChildren(), true);

    final TreePanel<ModelData> tree = new TreePanel<ModelData>(store);
    tree.setWidth(300);
    tree.setDisplayProperty("name");
    tree.getStyle().setLeafIcon(Resources.ICONS.music());

    ButtonBar buttonBar = new ButtonBar();

    buttonBar.add(new Button("Expand All", new SelectionListener<ButtonEvent>() {
      public void componentSelected(ButtonEvent ce) {
        tree.expandAll();
      }
    }));
    buttonBar.add(new Button("Collapse All", new SelectionListener<ButtonEvent>() {
      public void componentSelected(ButtonEvent ce) {
        tree.collapseAll();
      }
    }));

    add(buttonBar, new FlowData(10));
    add(tree, new FlowData(10));
  }
}