tree.jpg
i have window like this, i want clik tree item file upload will open window file upload,,when clik item tree download file open window download file.
PHP Code:
 package com.mycompany.project.client.view;        import java.io.Serializable;import java.util.List;     import com.mycompany.resources.client.Resources;  import com.mycompany.resources.client.TestData;  
import com.extjs.gxt.ui.client.data.BaseTreeModel;import com.extjs.gxt.ui.client.data.ModelData;  import com.extjs.gxt.ui.client.event.ButtonEvent;  import com.extjs.gxt.ui.client.event.MenuEvent;  import com.extjs.gxt.ui.client.event.SelectionChangedEvent;import com.extjs.gxt.ui.client.event.SelectionChangedListener;import com.extjs.gxt.ui.client.event.SelectionListener;  import com.extjs.gxt.ui.client.store.TreeStore;  import com.extjs.gxt.ui.client.widget.ContentPanel;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.FitLayout;import com.extjs.gxt.ui.client.widget.layout.FlowData;  import com.extjs.gxt.ui.client.widget.layout.FlowLayout;  import com.extjs.gxt.ui.client.widget.menu.Menu;  import com.extjs.gxt.ui.client.widget.menu.MenuItem;  import com.extjs.gxt.ui.client.widget.treepanel.TreePanel;  import com.google.gwt.core.client.GWT;import com.google.gwt.user.client.Element;import com.google.gwt.user.client.Window;import com.extjs.gxt.ui.client.widget.layout.RowLayout;import com.extjs.gxt.ui.client.Style.Orientation;import com.extjs.gxt.ui.client.widget.layout.RowData;import com.extjs.gxt.ui.client.Style;import com.extjs.gxt.ui.client.util.Margins;import com.extjs.gxt.ui.client.widget.layout.FillLayout;import com.extjs.gxt.ui.client.widget.layout.AbsoluteLayout;import com.extjs.gxt.ui.client.widget.layout.AbsoluteData;import com.extjs.gxt.ui.client.Style.HorizontalAlignment;        public class WestPanel2 extends ContentPanel {    public WestPanel2() {        setButtonAlign(HorizontalAlignment.LEFT);        setCollapsible(true);        }       private int count 1;              @Override       protected void onRender(Element parentint pos) {        super.onRender(parentpos);        final Folder model getTreeModel();          setHeading("Menu AP2T");          final TreeStore<ModelDatastore = new TreeStore<ModelData>();        final TreePanel<ModelDatatree = new TreePanel<ModelData>(store);        store.add(model.getChildren(), true);                          setLayout(new AbsoluteLayout());                          ButtonBar buttonBar = new ButtonBar();                          add(buttonBar, new AbsoluteData(00));                          buttonBar.setSize("372px""26px");                   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();                         }                       }));                                        AbsoluteData ad_tree = new AbsoluteData(026);                   ad_tree.setAnchorSpec("0 -60");                   add(treead_tree);
                   
tree.setBorders(true);                   tree.setSize(400400);                   tree.setDisplayProperty("name");                     tree.getStyle().setLeafIcon(Resources.ICONS.form());                     tree.setWidth(260);                                      tree.getSelectionModel().addSelectionChangedListener(new SelectionChangedListener<ModelData>() {                       public void selectionChanged(SelectionChangedEvent<ModelDatase) {                                                   EditorNew editor = new EditorNew();                           editor.show();
                       }
                   });      }      public static 
Folder getTreeModel() {            Folder[] folders = new Folder[] {                new Folder("Managemen Buku",                    new Folder[] {
                        new 
Folder("Bab1",                            new Music[] {                                new Music("Six String Quartets""Beethoven""Quartets"),                                new Music("Grosse Fugue for String Quartets""Beethoven",                                    "Quartets"),}),                        new Folder("Bab 2", new Music[] {                            new Music("Sonata in A Minor""Beethoven""Sonatas"),                            new Music("Sonata in F Major""Beethoven""Sonatas"),}),
                        new 
Folder("Bab 3", new Music[] {                            new Music("No. 1 - C""Beethoven""Concertos"),                            new Music("No. 5 - E-Flat Major""Beethoven""Concertos"),}),
                        new 
Folder("Bab 4", new Music[] {                            new Music("No. 1 - C Major""Beethoven""Symphonies"),                            new Music("No. 2 - D Minor""Beethoven""Symphonies"),}),}),                new Folder("Arsip",                    new Music[] {                            new Music("Upload File""Brahms""Symphonies"),                            new Music("Download File""Brahms""Symphonies"),}),                        new Folder("FAQ",                                    new Folder[] {                                        new Folder("Concertos", new Music[] {                                            new Music("Violin Concerto""Brahms""Concertos"),                                            new Music("Piano Concerto No. 2 - B-Flat Major""Brahms",                                                "Concertos"),}),                                        new Folder("Quartets",                                            new Music[] {                                                new Music("Piano Quartet No. 1 - G Minor""Brahms""Quartets"),                                                new Music("String Quartet No. 3 - B-Flat Minor""Brahms",                                                    "Quartets"),}),                                        new Folder("Sonatas", new Music[] {                                            new Music("Two Sonatas for Clarinet - F Minor""Brahms""Sonatas"),                                            new Music("Two Sonatas for Clarinet - E-Flat Major""Brahms",                                                "Sonatas"),}),                                        new Folder("Symphonies", new Music[] {                                            new Music("No. 1 - C Minor""Brahms""Symphonies"),
                                            new 
Music("No. 4 - E Minor""Brahms""Symphonies"),}),}),                new Folder("Managemen User", new Music[] {                    new Music("Edit User""Mozart""Concertos"),                    new Music("Violin Concerto No. 4""Mozart""Concertos"),}),};
            
Folder root = new Folder("root");            for (int i 0folders.lengthi++) {              root.add((Folderfolders[i]);            }
            return 
root;          }       }  class Music extends BaseTreeModel {
      public 
Music() {
      }
      public 
Music(String name) {        set("name"name);      }
      public 
Music(String nameString authorString genre) {        set("name"name);        set("author"author);        set("genre"genre);      }
      public 
String getName() {        return (String) get("name");      }
      public 
String getAuthor() {        return (String) get("author");      }
      public 
String getGenre() {        return (String) get("genre");      }
      public 
String toString() {        return getName();      }    }
    class 
Folder extends BaseTreeModel implements Serializable {
      private static 
int ID 0;            public Folder() {        set("id"ID++);      }
      public 
Folder(String name) {        set("id"ID++);        set("name"name);      }
      public 
Folder(String nameBaseTreeModel[] children) {        this(name);        for (int i 0children.lengthi++) {          add(children[i]);        }      }
      public 
Integer getId() {        return (Integer) get("id");      }
      public 
String getName() {        return (String) get("name");      }
      public 
String toString() {        return getName();      }    }