UndoSupport, now the editor will reload the gui only if file is changed and some property editors. Also xml auto completition and XmlNavigator

jme3-gui/src/com/jme3/gde/gui/EmptyNiftyGui.xml

@@ -1,10 +1,10 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<nifty xmlns="http://nifty-gui.sourceforge.net/nifty-1.3.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://nifty-gui.sourceforge.net/nifty-1.3.xsd http://nifty-gui.sourceforge.net/nifty-1.3.xsd">
-  <!-- +++++++++++++++++++++++++++++++++++++++ -->
-  <!-- start screen -->
-  <!-- +++++++++++++++++++++++++++++++++++++++ -->
-  <screen id="GScreen0" controller="mygame.Main">
-    <layer id="GLayer0" childLayout="absolute">
-    </layer>
-  </screen>
+<?xml version="1.0" encoding="UTF-8"?>
+<nifty xmlns="http://nifty-gui.lessvoid.com/nifty-gui" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://raw.githubusercontent.com/void256/nifty-gui/1.4/nifty-core/src/main/resources/nifty.xsd https://raw.githubusercontent.com/void256/nifty-gui/1.4/nifty-core/src/main/resources/nifty.xsd">
+  <!-- +++++++++++++++++++++++++++++++++++++++ -->
+  <!-- start screen -->
+  <!-- +++++++++++++++++++++++++++++++++++++++ -->
+  <screen id="GScreen0" controller="mygame.Main">
+    <layer id="GLayer0" childLayout="absolute">
+    </layer>
+  </screen>
 </nifty>

jme3-gui/src/com/jme3/gde/gui/Navigator.java

@@ -1,191 +1,202 @@
-/*
- * To change this template, choose Tools | Templates
- * and open the template in the editor.
- */
-package com.jme3.gde.gui;
-
-import com.jme3.gde.gui.nodes.GElementNode;
-import com.jme3.gde.gui.nodes.ScreenChildFactory;
-import jada.ngeditor.controller.GUIEditor;
-import jada.ngeditor.model.elements.GElement;
-import java.awt.BorderLayout;
-import java.beans.PropertyChangeEvent;
-import java.beans.PropertyChangeListener;
-import java.beans.PropertyVetoException;
-import java.util.ArrayList;
-import java.util.Observable;
-import java.util.Observer;
-import javax.swing.JComponent;
-import org.netbeans.spi.navigator.NavigatorPanel;
-import org.openide.explorer.ExplorerManager;
-import org.openide.explorer.ExplorerUtils;
-import org.openide.explorer.view.BeanTreeView;
-import org.openide.nodes.AbstractNode;
-import org.openide.nodes.Children;
-import org.openide.nodes.Node;
-import org.openide.util.Exceptions;
-import org.openide.util.Lookup;
-import org.openide.util.LookupEvent;
-import org.openide.util.LookupListener;
-import org.openide.util.Utilities;
-import org.openide.util.lookup.ProxyLookup;
-import org.openide.windows.TopComponent;
-
-/**
- *
- * @author cris
- */
[email protected](mimeType = "text/x-niftygui+xml", displayName="Gui View")
-public class Navigator extends javax.swing.JPanel implements NavigatorPanel,ExplorerManager.Provider , Observer, PropertyChangeListener, LookupListener{
-    private Lookup lookup;
-    private  ExplorerManager mgr = new ExplorerManager();
-    private final BeanTreeView beanTreeView;
-    private GUIEditor editor;
-    private Lookup context;
-    private boolean lock;
-    /**
-     * Creates new form Navigator
-     */
-    public Navigator() {
-        initComponents();
-        setLayout(new BorderLayout());
-        beanTreeView = new BeanTreeView();
-        add(beanTreeView, BorderLayout.CENTER);
-        
-    }
-
-    /**
-     * This method is called from within the constructor to initialize the form.
-     * WARNING: Do NOT modify this code. The content of this method is always
-     * regenerated by the Form Editor.
-     */
-    @SuppressWarnings("unchecked")
-    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
-    private void initComponents() {
-
-        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
-        this.setLayout(layout);
-        layout.setHorizontalGroup(
-            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
-            .addGap(0, 244, Short.MAX_VALUE)
-        );
-        layout.setVerticalGroup(
-            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
-            .addGap(0, 274, Short.MAX_VALUE)
-        );
-    }// </editor-fold>//GEN-END:initComponents
-    // Variables declaration - do not modify//GEN-BEGIN:variables
-    // End of variables declaration//GEN-END:variables
-
-    @Override
-    public String getDisplayName() {
-       return "GuiView";
-    }
-
-    @Override
-    public String getDisplayHint() {
-       return "Easy view for your gui";
-    }
-
-    @Override
-    public JComponent getComponent() {
-       return this;
-    }
-
-    @Override
-    public void panelActivated(Lookup context) {
-        try {
-            this.context = context;
-            context.lookupResult(NiftyGuiDataObject.class).addLookupListener(this);
-            intNavigator(context);
-        } catch (PropertyVetoException ex) {
-            Exceptions.printStackTrace(ex);
-        }
-    }
-
-    @Override
-    public void panelDeactivated() {
-        ExplorerUtils.activateActions(mgr, false);
-    }
-
-    @Override
-    public Lookup getLookup() {
-       return lookup;
-    }
-
-    @Override
-    public ExplorerManager getExplorerManager() {
-        return mgr;
-    }
-
-    @Override
-    public void update(Observable o, Object arg) {
-        
-        jada.ngeditor.listeners.actions.Action act = ( jada.ngeditor.listeners.actions.Action) arg;
-       if(act.getType() == jada.ngeditor.listeners.actions.Action.SEL){
-           ArrayList<String> path = new ArrayList<String>();
-           GElement parent = act.getGUIElement();
-           while(parent!=null){
-               path.add(parent.getID());
-               parent = parent.getParent();
-           }
-           Node result = mgr.getRootContext();
-           for(int i=path.size()-1;i>=0;i--){
-               result = result.getChildren().findChild(path.get(i));
-           }
-            try {
-                mgr.setSelectedNodes(new Node[]{result});
-            } catch (PropertyVetoException ex) {
-                Exceptions.printStackTrace(ex);
-            }
-       }else  if(act.getType() == jada.ngeditor.listeners.actions.Action.NEW){
-            try {
-                this.intNavigator(context);
-            } catch (PropertyVetoException ex) {
-                Exceptions.printStackTrace(ex);
-            }
-       }
-        beanTreeView.updateUI();
-    }
-
-    @Override
-    public void propertyChange(PropertyChangeEvent evt) {
-        if (evt.getPropertyName().equals(ExplorerManager.PROP_SELECTED_NODES)) {
-            Node[] newValue = (Node[]) evt.getNewValue();
-            if (newValue.length > 0) {
-                AbstractNode firstSelected = (AbstractNode) newValue[0];
-                if (firstSelected instanceof GElementNode) {
-                    GElement element = ((GElementNode) firstSelected).getGelement();
-                    
-                    editor.selectElement(element);
-                    
-                }
-            }
-        }
-    }
-
-    @Override
-    public void resultChanged(LookupEvent ev) {
-        try {
-            intNavigator(context);
-        } catch (PropertyVetoException ex) {
-            Exceptions.printStackTrace(ex);
-        }
-    }
-
-    private void intNavigator(Lookup context) throws PropertyVetoException {
-        
-        NiftyGuiDataObject man = context.lookup(NiftyGuiDataObject.class);
-        ExplorerUtils.activateActions(mgr, true);
-        editor = man.getLookup().lookup(GUIEditor.class);
-        AbstractNode guiRoot = new AbstractNode(Children.create(new ScreenChildFactory(editor.getGui()), true));
-        guiRoot.setName("Gui");
-        this.mgr.setRootContext(guiRoot);
-        this.beanTreeView.updateUI();
-        mgr.addPropertyChangeListener(this);
-        this.mgr.setSelectedNodes(new Node[]{guiRoot});
-        Lookup lookup1 = ExplorerUtils.createLookup(mgr, getActionMap());
-        lookup = new ProxyLookup(lookup1);
-        editor.addObserver(this);
-    }
-}
+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package com.jme3.gde.gui;
+
+import com.jme3.gde.gui.nodes.GElementNode;
+import com.jme3.gde.gui.nodes.GUINode;
+import com.jme3.gde.gui.nodes.ScreenChildFactory;
+import jada.ngeditor.controller.CommandProcessor;
+import jada.ngeditor.controller.GUIEditor;
+import jada.ngeditor.controller.commands.SelectCommand;
+import jada.ngeditor.listeners.events.ReloadGuiEvent;
+import jada.ngeditor.listeners.events.SelectionChanged;
+import jada.ngeditor.model.GUI;
+import jada.ngeditor.model.GuiEditorModel;
+import jada.ngeditor.model.elements.GElement;
+import java.awt.BorderLayout;
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
+import java.beans.PropertyVetoException;
+import java.util.ArrayList;
+import java.util.Observable;
+import java.util.Observer;
+import javax.swing.JComponent;
+import org.netbeans.spi.navigator.NavigatorPanel;
+import org.openide.explorer.ExplorerManager;
+import org.openide.explorer.ExplorerUtils;
+import org.openide.explorer.view.BeanTreeView;
+import org.openide.nodes.AbstractNode;
+import org.openide.nodes.Children;
+import org.openide.nodes.Node;
+import org.openide.util.Exceptions;
+import org.openide.util.Lookup;
+import org.openide.util.LookupEvent;
+import org.openide.util.LookupListener;
+import org.openide.util.Utilities;
+import org.openide.util.lookup.ProxyLookup;
+import org.openide.windows.TopComponent;
+
+/**
+ *
+ * @author cris
+ */
[email protected](mimeType = "text/x-niftygui+xml", displayName="Gui View")
+public class Navigator extends javax.swing.JPanel implements NavigatorPanel,ExplorerManager.Provider , Observer, PropertyChangeListener{
+    private Lookup lookup;
+    private  ExplorerManager mgr = new ExplorerManager();
+    private final BeanTreeView beanTreeView;
+    private GUIEditor editor;
+    private Lookup context;
+    private boolean lock;
+    /**
+     * Creates new form Navigator
+     */
+    public Navigator() {
+        initComponents();
+        setLayout(new BorderLayout());
+        beanTreeView = new BeanTreeView();
+        add(beanTreeView, BorderLayout.CENTER);
+        CommandProcessor.getInstance().getObservable().addObserver(this);
+        
+    }
+
+    /**
+     * This method is called from within the constructor to initialize the form.
+     * WARNING: Do NOT modify this code. The content of this method is always
+     * regenerated by the Form Editor.
+     */
+    @SuppressWarnings("unchecked")
+    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
+    private void initComponents() {
+
+        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
+        this.setLayout(layout);
+        layout.setHorizontalGroup(
+            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
+            .addGap(0, 244, Short.MAX_VALUE)
+        );
+        layout.setVerticalGroup(
+            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
+            .addGap(0, 274, Short.MAX_VALUE)
+        );
+    }// </editor-fold>//GEN-END:initComponents
+    // Variables declaration - do not modify//GEN-BEGIN:variables
+    // End of variables declaration//GEN-END:variables
+
+    @Override
+    public String getDisplayName() {
+       return "GuiView";
+    }
+
+    @Override
+    public String getDisplayHint() {
+       return "Easy view for your gui";
+    }
+
+    @Override
+    public JComponent getComponent() {
+       return this;
+    }
+
+    @Override
+    public void panelActivated(Lookup context) {
+        
+    }
+
+    @Override
+    public void panelDeactivated() {
+        ExplorerUtils.activateActions(mgr, false);
+    }
+
+    @Override
+    public Lookup getLookup() {
+       return lookup;
+    }
+
+    @Override
+    public ExplorerManager getExplorerManager() {
+        return mgr;
+    }
+
+    @Override
+    public void update(Observable o, Object arg) {
+       if(o instanceof GuiEditorModel){
+           try {
+               GuiEditorModel model = (GuiEditorModel) o;
+               model.getCurrent().addObserver(this);
+               model.getCurrent().getSelection().addObserver(this);
+               this.intNavigator(model.getCurrent());
+           } catch (PropertyVetoException ex) {
+               Exceptions.printStackTrace(ex);
+           }
+       }
+       
+       if(arg instanceof SelectionChanged){
+           SelectionChanged event = (SelectionChanged) arg;
+           if(event.getNewSelection().isEmpty()){
+               return;
+           }
+           ArrayList<String> path = new ArrayList<String>();
+           GElement parent = ((SelectionChanged)arg).getElement();
+           while(parent!=null){
+               path.add(parent.getID());
+               parent = parent.getParent();
+           }
+           Node result = mgr.getRootContext();
+           for(int i=path.size()-1;i>=0;i--){
+               result = result.getChildren().findChild(path.get(i));
+           }
+            try {
+                mgr.setSelectedNodes(new Node[]{result});
+            } catch (PropertyVetoException ex) {
+                Exceptions.printStackTrace(ex);
+            }
+       }
+        beanTreeView.updateUI();
+    }
+
+    @Override
+    public void propertyChange(PropertyChangeEvent evt) {
+        if (evt.getPropertyName().equals(ExplorerManager.PROP_SELECTED_NODES)) {
+            Node[] newValue = (Node[]) evt.getNewValue();
+            if (newValue.length > 0) {
+                AbstractNode firstSelected = (AbstractNode) newValue[0];
+                if (firstSelected instanceof GElementNode) {
+                    GElement element = ((GElementNode) firstSelected).getGelement();
+                    GUI gui = ((GUINode)mgr.getRootContext()).getGui();
+                    gui.getSelection().deleteObserver(this); // I don't wont to get notified about this selection change
+                    SelectCommand command = CommandProcessor.getInstance().getCommand(SelectCommand.class);
+                    command.setElement(element);
+                    try {
+                        lock = true;
+                        CommandProcessor.getInstance().excuteCommand(command);
+                    } catch (Exception ex) {
+                        Exceptions.printStackTrace(ex);
+                    }
+                     gui.getSelection().addObserver(this);
+                    
+                }
+            }
+        }
+    }
+
+
+    private void intNavigator(GUI gui) throws PropertyVetoException {
+        
+       
+        ExplorerUtils.activateActions(mgr, true);
+       
+        
+        AbstractNode guiRoot = new GUINode(gui);
+        guiRoot.setName("Gui");
+        this.mgr.setRootContext(guiRoot);
+        this.beanTreeView.updateUI();
+        mgr.addPropertyChangeListener(this);
+        this.mgr.setSelectedNodes(new Node[]{guiRoot});
+        Lookup lookup1 = ExplorerUtils.createLookup(mgr, getActionMap());
+        lookup = new ProxyLookup(lookup1);
+        
+    }
+}

jme3-gui/src/com/jme3/gde/gui/NiftyGuiDataObject.java

@@ -1,148 +1,149 @@
-/*
- * To change this template, choose Tools | Templates
- * and open the template in the editor.
- */
-package com.jme3.gde.gui;
-
-import com.jme3.gde.core.assets.ProjectAssetManager;
-import jada.ngeditor.controller.GUIEditor;
-import java.io.IOException;
-import org.netbeans.api.project.Project;
-import org.netbeans.api.project.ProjectManager;
-import org.netbeans.core.spi.multiview.MultiViewElement;
-import org.netbeans.core.spi.multiview.text.MultiViewEditorElement;
-import org.openide.awt.ActionID;
-import org.openide.awt.ActionReference;
-import org.openide.awt.ActionReferences;
-import org.openide.filesystems.FileObject;
-import org.openide.filesystems.MIMEResolver;
-import org.openide.loaders.DataNode;
-import org.openide.loaders.DataObject;
-import org.openide.loaders.DataObjectExistsException;
-import org.openide.loaders.MultiDataObject;
-import org.openide.loaders.MultiFileLoader;
-import org.openide.nodes.Children;
-import org.openide.nodes.Node;
-import org.openide.util.Lookup;
-import org.openide.util.NbBundle.Messages;
-import org.openide.windows.TopComponent;
-
-@Messages({
-    "LBL_NiftyGui_LOADER=Files of NiftyGui"
-})
[email protected](
-        displayName = "#LBL_NiftyGui_LOADER",
-        resource = "NiftyGuiResolver.xml")
[email protected](
-        mimeType = "text/x-niftygui+xml",
-        iconBase = "com/jme3/gde/gui/Computer_File_043.gif",
-        displayName = "#LBL_NiftyGui_LOADER",
-        position = 300)
-@ActionReferences({
-    @ActionReference(
-            path = "Loaders/text/x-niftygui+xml/Actions",
-            id =
-            @ActionID(category = "System", id = "org.openide.actions.OpenAction"),
-            position = 100,
-            separatorAfter = 200),
-    @ActionReference(
-            path = "Loaders/text/x-niftygui+xml/Actions",
-            id =
-            @ActionID(category = "Edit", id = "org.openide.actions.CutAction"),
-            position = 300),
-    @ActionReference(
-            path = "Loaders/text/x-niftygui+xml/Actions",
-            id =
-            @ActionID(category = "Edit", id = "org.openide.actions.CopyAction"),
-            position = 400,
-            separatorAfter = 500),
-    @ActionReference(
-            path = "Loaders/text/x-niftygui+xml/Actions",
-            id =
-            @ActionID(category = "Edit", id = "org.openide.actions.DeleteAction"),
-            position = 600),
-    @ActionReference(
-            path = "Loaders/text/x-niftygui+xml/Actions",
-            id =
-            @ActionID(category = "System", id = "org.openide.actions.RenameAction"),
-            position = 700,
-            separatorAfter = 800),
-    @ActionReference(
-            path = "Loaders/text/x-niftygui+xml/Actions",
-            id =
-            @ActionID(category = "System", id = "org.openide.actions.SaveAsTemplateAction"),
-            position = 900,
-            separatorAfter = 1000),
-    @ActionReference(
-            path = "Loaders/text/x-niftygui+xml/Actions",
-            id =
-            @ActionID(category = "System", id = "org.openide.actions.FileSystemAction"),
-            position = 1100,
-            separatorAfter = 1200),
-    @ActionReference(
-            path = "Loaders/text/x-niftygui+xml/Actions",
-            id =
-            @ActionID(category = "System", id = "org.openide.actions.ToolsAction"),
-            position = 1300),
-    @ActionReference(
-            path = "Loaders/text/x-niftygui+xml/Actions",
-            id =
-            @ActionID(category = "System", id = "org.openide.actions.PropertiesAction"),
-            position = 1400)
-})
-public class NiftyGuiDataObject extends MultiDataObject {
-
-    public NiftyGuiDataObject(FileObject pf, MultiFileLoader loader) throws DataObjectExistsException, IOException {
-        super(pf, loader);
-        registerEditor("text/x-niftygui+xml", true);
-        findAssetManager();
-        this.getCookieSet().assign(GUIEditor.class,new GUIEditor());
-    }
-
-    protected final void findAssetManager() {
-        FileObject file = getPrimaryFile();
-        ProjectManager pm = ProjectManager.getDefault();
-        while (file != null) {
-            if (file.isFolder() && pm.isProject(file)) {
-                try {
-                    Project project = ProjectManager.getDefault().findProject(file);
-                    if (project != null) {
-                        ProjectAssetManager mgr = project.getLookup().lookup(ProjectAssetManager.class);
-                        if (mgr != null) {
-                            this.getCookieSet().assign(mgr.getClass(),mgr);
-                            return;
-                        }
-                    }
-                } catch (IOException ex) {
-                } catch (IllegalArgumentException ex) {
-                }
-            }
-            file = file.getParent();
-        }
-    }
-
-    @Override
-    protected Node createNodeDelegate() {
-        DataNode node = new DataNode(this, Children.LEAF, getLookup());
-        node.setIconBaseWithExtension("com/jme3/gde/gui/Computer_File_043.gif");
-        return node;
-    }
-    
-    @Override
-    protected int associateLookup() {
-        return 1;
-    }
-
-    @MultiViewElement.Registration(
-            displayName = "#LBL_NiftyGui_EDITOR",
-            iconBase = "com/jme3/gde/gui/Computer_File_043.gif",
-            mimeType = "text/x-niftygui+xml",
-            persistenceType = TopComponent.PERSISTENCE_ONLY_OPENED,
-            preferredID = "NiftyGui",
-            position = 1000)
-    @Messages("LBL_NiftyGui_EDITOR=XML")
-    public static MultiViewEditorElement createEditor(Lookup lkp) {
-        final MultiViewEditorElement multiViewEditorElement = new MultiViewEditorElement(lkp);
-        return multiViewEditorElement;
-    }
-}
+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package com.jme3.gde.gui;
+
+import com.jme3.gde.core.assets.ProjectAssetManager;
+import jada.ngeditor.controller.CommandProcessor;
+import jada.ngeditor.controller.GUIEditor;
+import java.io.IOException;
+import org.netbeans.api.project.Project;
+import org.netbeans.api.project.ProjectManager;
+import org.netbeans.core.spi.multiview.MultiViewElement;
+import org.netbeans.core.spi.multiview.text.MultiViewEditorElement;
+import org.openide.awt.ActionID;
+import org.openide.awt.ActionReference;
+import org.openide.awt.ActionReferences;
+import org.openide.filesystems.FileObject;
+import org.openide.filesystems.MIMEResolver;
+import org.openide.loaders.DataNode;
+import org.openide.loaders.DataObject;
+import org.openide.loaders.DataObjectExistsException;
+import org.openide.loaders.MultiDataObject;
+import org.openide.loaders.MultiFileLoader;
+import org.openide.nodes.Children;
+import org.openide.nodes.Node;
+import org.openide.util.Lookup;
+import org.openide.util.NbBundle.Messages;
+import org.openide.windows.TopComponent;
+
+@Messages({
+    "LBL_NiftyGui_LOADER=Files of NiftyGui"
+})
[email protected](
+        displayName = "#LBL_NiftyGui_LOADER",
+        resource = "NiftyGuiResolver.xml")
[email protected](
+        mimeType = "text/x-niftygui+xml",
+        iconBase = "com/jme3/gde/gui/Computer_File_043.gif",
+        displayName = "#LBL_NiftyGui_LOADER",
+        position = 300)
+@ActionReferences({
+    @ActionReference(
+            path = "Loaders/text/x-niftygui+xml/Actions",
+            id =
+            @ActionID(category = "System", id = "org.openide.actions.OpenAction"),
+            position = 100,
+            separatorAfter = 200),
+    @ActionReference(
+            path = "Loaders/text/x-niftygui+xml/Actions",
+            id =
+            @ActionID(category = "Edit", id = "org.openide.actions.CutAction"),
+            position = 300),
+    @ActionReference(
+            path = "Loaders/text/x-niftygui+xml/Actions",
+            id =
+            @ActionID(category = "Edit", id = "org.openide.actions.CopyAction"),
+            position = 400,
+            separatorAfter = 500),
+    @ActionReference(
+            path = "Loaders/text/x-niftygui+xml/Actions",
+            id =
+            @ActionID(category = "Edit", id = "org.openide.actions.DeleteAction"),
+            position = 600),
+    @ActionReference(
+            path = "Loaders/text/x-niftygui+xml/Actions",
+            id =
+            @ActionID(category = "System", id = "org.openide.actions.RenameAction"),
+            position = 700,
+            separatorAfter = 800),
+    @ActionReference(
+            path = "Loaders/text/x-niftygui+xml/Actions",
+            id =
+            @ActionID(category = "System", id = "org.openide.actions.SaveAsTemplateAction"),
+            position = 900,
+            separatorAfter = 1000),
+    @ActionReference(
+            path = "Loaders/text/x-niftygui+xml/Actions",
+            id =
+            @ActionID(category = "System", id = "org.openide.actions.FileSystemAction"),
+            position = 1100,
+            separatorAfter = 1200),
+    @ActionReference(
+            path = "Loaders/text/x-niftygui+xml/Actions",
+            id =
+            @ActionID(category = "System", id = "org.openide.actions.ToolsAction"),
+            position = 1300),
+    @ActionReference(
+            path = "Loaders/text/x-niftygui+xml/Actions",
+            id =
+            @ActionID(category = "System", id = "org.openide.actions.PropertiesAction"),
+            position = 1400)
+})
+public class NiftyGuiDataObject extends MultiDataObject {
+
+    public NiftyGuiDataObject(FileObject pf, MultiFileLoader loader) throws DataObjectExistsException, IOException {
+        super(pf, loader);
+        registerEditor("text/x-niftygui+xml", true);
+        findAssetManager();
+        this.getCookieSet().assign(GUIEditor.class, CommandProcessor.getInstance().getGuiEditor());
+    }
+
+    protected final void findAssetManager() {
+        FileObject file = getPrimaryFile();
+        ProjectManager pm = ProjectManager.getDefault();
+        while (file != null) {
+            if (file.isFolder() && pm.isProject(file)) {
+                try {
+                    Project project = ProjectManager.getDefault().findProject(file);
+                    if (project != null) {
+                        ProjectAssetManager mgr = project.getLookup().lookup(ProjectAssetManager.class);
+                        if (mgr != null) {
+                            this.getCookieSet().assign(mgr.getClass(),mgr);
+                            return;
+                        }
+                    }
+                } catch (IOException ex) {
+                } catch (IllegalArgumentException ex) {
+                }
+            }
+            file = file.getParent();
+        }
+    }
+
+    @Override
+    protected Node createNodeDelegate() {
+        DataNode node = new DataNode(this, Children.LEAF, getLookup());
+        node.setIconBaseWithExtension("com/jme3/gde/gui/Computer_File_043.gif");
+        return node;
+    }
+    
+    @Override
+    protected int associateLookup() {
+        return 1;
+    }
+
+    @MultiViewElement.Registration(
+            displayName = "#LBL_NiftyGui_EDITOR",
+            iconBase = "com/jme3/gde/gui/Computer_File_043.gif",
+            mimeType = "text/x-niftygui+xml",
+            persistenceType = TopComponent.PERSISTENCE_ONLY_OPENED,
+            preferredID = "NiftyGui",
+            position = 1000)
+    @Messages("LBL_NiftyGui_EDITOR=XML")
+    public static MultiViewEditorElement createEditor(Lookup lkp) {
+        final MultiViewEditorElement multiViewEditorElement = new MultiViewEditorElement(lkp);
+        return multiViewEditorElement;
+    }
+}

jme3-gui/src/com/jme3/gde/gui/NiftyGuiVisualElement.java

@@ -1,332 +1,335 @@
-/*
- * To change this template, choose Tools | Templates
- * and open the template in the editor.
- */
-package com.jme3.gde.gui;
-
-import com.jme3.gde.core.assets.ProjectAssetManager;
-import com.jme3.gde.core.scene.SceneApplication;
-import com.jme3.gde.gui.nodes.GUINode;
-import com.jme3.gde.gui.palette.NiftyGUIPaletteFactory;
-import de.lessvoid.nifty.Nifty;
-import jada.ngeditor.controller.GUIEditor;
-import jada.ngeditor.guiviews.DND.PaletteDropTarget;
-import jada.ngeditor.guiviews.DND.TrasferHandling;
-import jada.ngeditor.guiviews.J2DNiftyView;
-import jada.ngeditor.model.elements.GElement;
-import jada.ngeditor.model.elements.GLayer;
-import jada.ngeditor.model.exception.NoProductException;
-import java.awt.Dimension;
-import java.awt.dnd.DropTarget;
-import java.awt.dnd.DropTargetDragEvent;
-import java.awt.dnd.DropTargetDropEvent;
-import java.awt.dnd.DropTargetEvent;
-import java.awt.dnd.DropTargetListener;
-import java.awt.event.ItemEvent;
-import java.awt.event.ItemListener;
-import java.beans.PropertyVetoException;
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Observable;
-import java.util.Observer;
-import java.util.concurrent.Callable;
-import javax.swing.Action;
-import javax.swing.ActionMap;
-import javax.swing.DefaultComboBoxModel;
-import javax.swing.JComboBox;
-import javax.swing.JComponent;
-import javax.swing.JPanel;
-import javax.swing.JToolBar;
-import javax.swing.text.AbstractDocument;
-import javax.xml.bind.JAXBException;
-import javax.xml.parsers.ParserConfigurationException;
-import org.netbeans.api.progress.ProgressHandle;
-import org.netbeans.api.progress.ProgressHandleFactory;
-import org.netbeans.core.spi.multiview.CloseOperationState;
-import org.netbeans.core.spi.multiview.MultiViewElement;
-import org.netbeans.core.spi.multiview.MultiViewElementCallback;
-import org.openide.DialogDisplayer;
-import org.openide.NotifyDescriptor;
-import org.openide.awt.UndoRedo;
-import org.openide.explorer.ExplorerManager;
-import org.openide.explorer.ExplorerUtils;
-import org.openide.nodes.Node;
-import org.openide.util.Exceptions;
-import org.openide.util.Lookup;
-import org.openide.util.NbBundle.Messages;
-import org.openide.util.lookup.AbstractLookup;
-import org.openide.util.lookup.InstanceContent;
-import org.openide.util.lookup.ProxyLookup;
-import org.openide.windows.TopComponent;
-import org.xml.sax.SAXException;
-
[email protected](
-        displayName = "#LBL_NiftyGui_VISUAL",
-        iconBase = "com/jme3/gde/gui/Computer_File_043.gif",
-        mimeType = "text/x-niftygui+xml",
-        persistenceType = TopComponent.PERSISTENCE_NEVER,
-        preferredID = "NiftyGuiVisual",
-        position = 2000)
-@Messages("LBL_NiftyGui_VISUAL=Visual")
-public final class NiftyGuiVisualElement extends JPanel implements MultiViewElement , ExplorerManager.Provider,Observer {
-
-    private NiftyGuiDataObject obj;
-    private JToolBar toolbar = new JToolBar();
-    private transient MultiViewElementCallback callback;
-    private GUIEditor editor;
-    private final Nifty nifty;
-    private final J2DNiftyView view;
-    private final JComboBox layers = new JComboBox();
-    private final ExplorerManager nodesManager;
-   
-
-    public NiftyGuiVisualElement(Lookup lkp) {
-        obj = lkp.lookup(NiftyGuiDataObject.class);
-        assert obj != null;
-        initComponents();
-        view = new J2DNiftyView(800, 600);
-        view.init();
-        this.scrollArea.getViewport().addChangeListener(view);
-        this.scrollArea.setViewportView(view);
-        TrasferHandling tranf = new TrasferHandling();
-        PaletteDropTarget tmp = new PaletteDropTarget();
-        editor = obj.getLookup().lookup(GUIEditor.class);
-        editor.addObserver(this);
-        nodesManager = new ExplorerManager();
-        nifty = view.getNifty();
-        view.setTransferHandler(tranf);
-        view.setDropTarget(tmp);
-        editor.addObserver(view);
-        editor.addObserver(tranf);
-        editor.addObserver(tmp);
-        this.createToolbar();
-    }
- /**
- * Old code
- * @author normenhansen
- */
-     private void createToolbar() {
-        toolbar.setPreferredSize(new Dimension(10000, 24));
-        toolbar.setMaximumSize(new Dimension(10000, 24));
-        toolbar.setFloatable(false);
-        JComboBox comboBox = new JComboBox(new String[]{"640x480", "480x800", "800x480", "800x600", "1024x768", "1280x720"});
-        comboBox.addItemListener(new ItemListener() {
-
-            public void itemStateChanged(ItemEvent e) {
-                String string = (String) e.getItem();
-                if ("640x480".equals(string)) {
-                    view.setResoltion(640, 480);
-                } else if ("1024x768".equals(string)) {
-                     view.setResoltion(1024, 768);
-                } else if ("1280x720".equals(string)) {
-                     view.setResoltion(1280, 720);
-                } else if ("800x600".equals(string)) {
-                     view.setResoltion(800, 600);
-                } else if ("800x480".equals(string)) {
-                     view.setResoltion(800, 480);
-                } else if ("480x800".equals(string)) {
-                     view.setResoltion(480, 800);
-                } else {
-                     view.setResoltion(800, 600);
-                }
-            }
-        });
-        toolbar.add(comboBox);
-        comboBox.setSelectedItem("800x600");
-        layers.addItemListener(new ItemListener() {
-
-            public void itemStateChanged(ItemEvent e) {
-                GLayer item = (GLayer) e.getItem();
-                editor.selectElement(item);
-            }
-        });
-        toolbar.add(layers);
-     }
-    @Override
-    public String getName() {
-        return "NiftyGuiVisualElement";
-    }
-
-    /**
-     * This method is called from within the constructor to initialize the form.
-     * WARNING: Do NOT modify this code. The content of this method is always
-     * regenerated by the Form Editor.
-     */
-    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
-    private void initComponents() {
-
-        scrollArea = new javax.swing.JScrollPane();
-
-        setLayout(new java.awt.BorderLayout());
-        add(scrollArea, java.awt.BorderLayout.CENTER);
-    }// </editor-fold>//GEN-END:initComponents
-
-    // Variables declaration - do not modify//GEN-BEGIN:variables
-    private javax.swing.JScrollPane scrollArea;
-    // End of variables declaration//GEN-END:variables
-    @Override
-    public JComponent getVisualRepresentation() {
-        return this;
-    }
-
-    @Override
-    public JComponent getToolbarRepresentation() {
-        return toolbar;
-    }
-
-    @Override
-    public Action[] getActions() {
-        return new Action[0];
-    }
-
-    @Override
-    public Lookup getLookup() {
-        return ExplorerUtils.createLookup(nodesManager, new ActionMap());
-    }
-    /**
-     * Raw implementation , just to prototype the editor
-     */
-    @Override
-    public void componentOpened() {
-        try {
-            ProgressHandle handle = ProgressHandleFactory.createHandle("Loading the gui file");
-            String path = this.obj.getPrimaryFile().getPath();
-            ProjectAssetManager mgr = obj.getLookup().lookup(ProjectAssetManager.class);
-            String assetPath = mgr.getAssetFolder().getPath();
-            handle.progress(50);
-            this.editor.createNewGui(nifty,new File(path),new File(assetPath));
-            nodesManager.setRootContext(new GUINode(this.editor.getGui()));
-            Collection<GLayer> layers1 = this.editor.getGui().getLayers();
-            DefaultComboBoxModel<GLayer> model = new DefaultComboBoxModel<GLayer>(layers1.toArray(new GLayer[0]));
-            layers.setModel(model);
-            layers.setSelectedItem(this.editor.getCurrentLayer());
-            
-            handle.finish();
-            
-        } catch (ParserConfigurationException ex) {
-            Exceptions.printStackTrace(ex);
-        } catch (JAXBException ex) {
-            Exceptions.printStackTrace(ex);
-        } catch (ClassNotFoundException ex) {
-            Exceptions.printStackTrace(ex);
-        } catch (IOException ex) {
-            Exceptions.printStackTrace(ex);
-        } catch (NoProductException ex) {
-            Exceptions.printStackTrace(ex);
-        } catch (SAXException ex) {
-            Exceptions.printStackTrace(ex);
-        } catch (Exception ex) {
-            Exceptions.printStackTrace(ex);
-        }
-    }
-
-    @Override
-    public void componentClosed() {
-    }
-    /**
-     * Raw implementation , just to prototype the editor
-     */
-    @Override
-    public void componentShowing() {
-        try {
-            ProgressHandle handle = ProgressHandleFactory.createHandle("Loading the gui file");
-            String path = this.obj.getPrimaryFile().getPath();
-            ProjectAssetManager mgr = this.obj.getLookup().lookup(ProjectAssetManager.class);
-            String assetPath = mgr.getAssetFolder().getPath();
-            this.editor.createNewGui(nifty,new File(path),new File(assetPath));
-             nodesManager.setRootContext(new GUINode(this.editor.getGui()));
-            Collection<GLayer> layers1 = this.editor.getGui().getLayers();
-            DefaultComboBoxModel<GLayer> model = new DefaultComboBoxModel<GLayer>(layers1.toArray(new GLayer[0]));
-            layers.setModel(model);
-            layers.setSelectedItem(this.editor.getCurrentLayer());
-           
-            handle.finish();
-        } catch (ParserConfigurationException ex) {
-            Exceptions.printStackTrace(ex);
-        } catch (JAXBException ex) {
-            Exceptions.printStackTrace(ex);
-        } catch (ClassNotFoundException ex) {
-            Exceptions.printStackTrace(ex);
-        } catch (IOException ex) {
-            Exceptions.printStackTrace(ex);
-        } catch (NoProductException ex) {
-            Exceptions.printStackTrace(ex);
-        } catch (SAXException ex) {
-            Exceptions.printStackTrace(ex);
-        } catch (Exception ex) {
-            Exceptions.printStackTrace(ex);
-        }
-        
-    }
-    /**
-     * Raw implementation , just to prototype the editor
-     */
-    @Override
-    public void componentHidden() {
-        String path = this.obj.getPrimaryFile().getPath();
-        try {
-            this.editor.saveGui(path);
-        } catch (FileNotFoundException ex) {
-            Exceptions.printStackTrace(ex);
-        } catch (JAXBException ex) {
-            Exceptions.printStackTrace(ex);
-        }
-    }
-
-    @Override
-    public void componentActivated() {
-    }
-
-    @Override
-    public void componentDeactivated() {
-    }
-
-    @Override
-    public UndoRedo getUndoRedo() {
-        return UndoRedo.NONE;
-    }
-
-    @Override
-    public void setMultiViewCallback(MultiViewElementCallback callback) {
-        this.callback = callback;
-    }
-
-    @Override
-    public CloseOperationState canCloseElement() {
-        return CloseOperationState.STATE_OK;
-    }
-
-    @Override
-    public ExplorerManager getExplorerManager() {
-       return nodesManager;
-    }
-
-    @Override
-    public void update(Observable o, Object arg) {
-        jada.ngeditor.listeners.actions.Action act = ( jada.ngeditor.listeners.actions.Action) arg;
-       if(act.getType() == jada.ngeditor.listeners.actions.Action.SEL){
-           ArrayList<String> path = new ArrayList<String>();
-           GElement parent = act.getGUIElement();
-           while(parent!=null){
-               path.add(parent.getID());
-               parent = parent.getParent();
-           }
-           
-           Node result = nodesManager.getRootContext();
-          
-           for(int i=path.size()-1;i>=0 && result!=null;i--){
-               result = result.getChildren().findChild(path.get(i));
-           }
-            try {
-                if(result!=null){
-                nodesManager.setSelectedNodes(new Node[]{result});
-                }
-            } catch (PropertyVetoException ex) {
-                Exceptions.printStackTrace(ex);
-            }
-       }
-    }
-}
+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package com.jme3.gde.gui;
+
+import com.jme3.gde.core.assets.ProjectAssetManager;
+import com.jme3.gde.gui.nodes.GUINode;
+import de.lessvoid.nifty.Nifty;
+import jada.ngeditor.controller.CommandProcessor;
+import jada.ngeditor.controller.GUIEditor;
+import jada.ngeditor.guiviews.DND.PaletteDropTarget;
+import jada.ngeditor.guiviews.DND.TrasferHandling;
+import jada.ngeditor.guiviews.J2DNiftyView;
+import jada.ngeditor.listeners.events.SelectionChanged;
+import jada.ngeditor.model.GuiEditorModel;
+import jada.ngeditor.model.elements.GElement;
+import jada.ngeditor.model.elements.GLayer;
+import jada.ngeditor.model.exception.NoProductException;
+import java.awt.Dimension;
+import java.awt.event.ItemEvent;
+import java.awt.event.ItemListener;
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
+import java.beans.PropertyVetoException;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Observable;
+import java.util.Observer;
+import javax.swing.Action;
+import javax.swing.ActionMap;
+import javax.swing.DefaultComboBoxModel;
+import javax.swing.JComboBox;
+import javax.swing.JComponent;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JToolBar;
+import javax.xml.bind.JAXBException;
+import javax.xml.parsers.ParserConfigurationException;
+import org.netbeans.api.progress.ProgressHandle;
+import org.netbeans.api.progress.ProgressHandleFactory;
+import org.netbeans.core.spi.multiview.CloseOperationState;
+import org.netbeans.core.spi.multiview.MultiViewElement;
+import org.netbeans.core.spi.multiview.MultiViewElementCallback;
+import org.openide.awt.UndoRedo;
+import org.openide.explorer.ExplorerManager;
+import org.openide.explorer.ExplorerUtils;
+import org.openide.loaders.DataObject;
+import org.openide.nodes.Node;
+import org.openide.util.Exceptions;
+import org.openide.util.Lookup;
+import org.openide.util.NbBundle.Messages;
+import org.openide.windows.TopComponent;
+import org.xml.sax.SAXException;
+import sun.rmi.runtime.Log;
+
[email protected](
+        displayName = "#LBL_NiftyGui_VISUAL",
+        iconBase = "com/jme3/gde/gui/Computer_File_043.gif",
+        mimeType = "text/x-niftygui+xml",
+        persistenceType = TopComponent.PERSISTENCE_NEVER,
+        preferredID = "NiftyGuiVisual",
+        position = 2000)
+@Messages("LBL_NiftyGui_VISUAL=Visual")
+public final class NiftyGuiVisualElement extends JPanel implements MultiViewElement , ExplorerManager.Provider,Observer, PropertyChangeListener {
+
+    private NiftyGuiDataObject obj;
+    private JToolBar toolbar = new JToolBar();
+    private transient MultiViewElementCallback callback;
+    private GUIEditor editor;
+    private final Nifty nifty;
+    private final J2DNiftyView view;
+    private final JComboBox layers = new JComboBox();
+    private final ExplorerManager nodesManager;
+    private final UndoRedo.Manager undoSupport;
+    private int guiID;
+   
+
+    public NiftyGuiVisualElement(Lookup lkp) {
+        obj = lkp.lookup(NiftyGuiDataObject.class);
+        assert obj != null;
+        initComponents();
+        view = new J2DNiftyView(800, 600);
+        view.init();
+        this.scrollArea.getViewport().addChangeListener(view);
+        this.scrollArea.setViewportView(view);
+        TrasferHandling tranf = new TrasferHandling();
+        PaletteDropTarget tmp = new PaletteDropTarget();
+        editor = obj.getLookup().lookup(GUIEditor.class);
+        nodesManager = new ExplorerManager();
+        nifty = view.getNifty();
+        view.setTransferHandler(tranf);
+        view.setDropTarget(tmp);
+       // editor.addObserver(view);
+       // editor.addObserver(tranf);
+        this.obj.addPropertyChangeListener(this);
+        this.createToolbar();
+        this.undoSupport = new UndoRedo.Manager();
+        CommandProcessor.getInstance().setUndoManager(undoSupport);
+    }
+ /**
+ * Old code
+ * @author normenhansen
+ */
+     private void createToolbar() {
+        toolbar.setPreferredSize(new Dimension(10000, 24));
+        toolbar.setMaximumSize(new Dimension(10000, 24));
+        toolbar.setFloatable(false);
+        toolbar.add(new JLabel("Change Resolution"));
+        JComboBox comboBox = new JComboBox(new String[]{"640x480", "480x800", "800x480", "800x600", "1024x768", "1280x720"});
+        comboBox.addItemListener(new ItemListener() {
+
+            public void itemStateChanged(ItemEvent e) {
+                String string = (String) e.getItem();
+                if ("640x480".equals(string)) {
+                    view.setResoltion(640, 480);
+                } else if ("1024x768".equals(string)) {
+                     view.setResoltion(1024, 768);
+                } else if ("1280x720".equals(string)) {
+                     view.setResoltion(1280, 720);
+                } else if ("800x600".equals(string)) {
+                     view.setResoltion(800, 600);
+                } else if ("800x480".equals(string)) {
+                     view.setResoltion(800, 480);
+                } else if ("480x800".equals(string)) {
+                     view.setResoltion(480, 800);
+                } else {
+                     view.setResoltion(800, 600);
+                }
+            }
+        });
+        toolbar.add(comboBox);
+        comboBox.setSelectedItem("800x600");
+        toolbar.add(new JLabel("Current Layer"));
+        layers.addItemListener(new ItemListener() {
+
+            public void itemStateChanged(ItemEvent e) {
+                GLayer item = (GLayer) e.getItem();
+                editor.selectElement(item);
+            }
+        });
+        toolbar.add(layers);
+     }
+    @Override
+    public String getName() {
+        return "NiftyGuiVisualElement";
+    }
+
+    /**
+     * This method is called from within the constructor to initialize the form.
+     * WARNING: Do NOT modify this code. The content of this method is always
+     * regenerated by the Form Editor.
+     */
+    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
+    private void initComponents() {
+
+        scrollArea = new javax.swing.JScrollPane();
+
+        setLayout(new java.awt.BorderLayout());
+        add(scrollArea, java.awt.BorderLayout.CENTER);
+    }// </editor-fold>//GEN-END:initComponents
+
+    // Variables declaration - do not modify//GEN-BEGIN:variables
+    private javax.swing.JScrollPane scrollArea;
+    // End of variables declaration//GEN-END:variables
+    @Override
+    public JComponent getVisualRepresentation() {
+        return this;
+    }
+
+    @Override
+    public JComponent getToolbarRepresentation() {
+        return toolbar;
+    }
+
+    @Override
+    public Action[] getActions() {
+        return new Action[0];
+    }
+
+    @Override
+    public Lookup getLookup() {
+        return ExplorerUtils.createLookup(nodesManager, new ActionMap());
+    }
+    /**
+     * Raw implementation , just to prototype the editor
+     */
+    @Override
+    public void componentOpened() {
+       loadGui();
+    }
+
+    @Override
+    public void componentClosed() {
+        
+    }
+    /**
+     * Raw implementation , just to prototype the editor
+     */
+    @Override
+    public void componentShowing() {
+        if(!this.obj.isModified()){
+            return;
+        }
+        loadGui();
+        
+    }
+    /**
+     * Raw implementation , just to prototype the editor
+     */
+    @Override
+    public void componentHidden() {
+        String path = this.obj.getPrimaryFile().getPath();
+        try {
+            this.editor.saveGui(path);
+        } catch (FileNotFoundException ex) {
+            Exceptions.printStackTrace(ex);
+        } catch (JAXBException ex) {
+            Exceptions.printStackTrace(ex);
+        } catch (NullPointerException ex){
+             Exceptions.printStackTrace(ex);
+        }
+    }
+
+    @Override
+    public void componentActivated() {
+        GuiEditorModel model = (GuiEditorModel) CommandProcessor.getInstance().getObservable();
+        model.setCurrentGUI(guiID);
+        CommandProcessor.getInstance().setUndoManager(undoSupport);
+    }
+
+    @Override
+    public void componentDeactivated() {
+    }
+
+    @Override
+    public UndoRedo getUndoRedo() {
+        return this.undoSupport;
+    }
+
+    @Override
+    public void setMultiViewCallback(MultiViewElementCallback callback) {
+        this.callback = callback;
+    }
+
+    @Override
+    public CloseOperationState canCloseElement() {
+        return CloseOperationState.STATE_OK;
+    }
+
+    @Override
+    public ExplorerManager getExplorerManager() {
+       return nodesManager;
+    }
+
+    @Override
+    public void update(Observable o, Object arg) {
+       if(arg instanceof SelectionChanged ){
+           SelectionChanged event = (SelectionChanged) arg;
+           if(event.getNewSelection().isEmpty()){
+               return;
+           }
+           ArrayList<String> path = new ArrayList<String>();
+           GElement parent = event.getElement();
+           while(parent!=null){
+               path.add(parent.getID());
+               parent = parent.getParent();
+           }
+           
+           Node result = nodesManager.getRootContext();
+          
+           for(int i=path.size()-1;i>=0 && result!=null;i--){
+               result = result.getChildren().findChild(path.get(i));
+           }
+            try {
+                if(result!=null){
+                nodesManager.setSelectedNodes(new Node[]{result});
+                }
+            } catch (PropertyVetoException ex) {
+                Exceptions.printStackTrace(ex);
+            }
+       }
+    }
+
+    @Override
+    public void propertyChange(PropertyChangeEvent evt) {
+        if(evt.getPropertyName().equals(DataObject.PROP_MODIFIED)){
+            boolean old = (Boolean)evt.getOldValue();
+            boolean nev = (Boolean)evt.getNewValue();
+            if(old && !nev){
+                this.loadGui();
+            }
+        }
+      
+    }
+
+    private void loadGui() {
+        try {
+            ProgressHandle handle = ProgressHandleFactory.createHandle("Loading the gui file");
+            InputStream is = this.obj.getPrimaryFile().getInputStream();
+            
+            ProjectAssetManager mgr = this.obj.getLookup().lookup(ProjectAssetManager.class);
+            String assetPath = mgr.getAssetFolder().getPath();
+            this.editor.createNewGui(nifty,is,new File(assetPath));
+            this.view.newGui(this.editor.getGui());
+            nodesManager.setRootContext(new GUINode(this.editor.getGui()));
+            this.editor.getGui().getSelection().addObserver(this);
+            Collection<GLayer> layers1 = this.editor.getGui().getLayers();
+            guiID = this.editor.getGui().getGUIid();
+            DefaultComboBoxModel<GLayer> model = new DefaultComboBoxModel<GLayer>(layers1.toArray(new GLayer[0]));
+            layers.setModel(model);
+            layers.setSelectedItem(this.editor.getCurrentLayer());
+           
+            handle.finish();
+        } catch (ParserConfigurationException ex) {
+            Exceptions.printStackTrace(ex);
+        } catch (JAXBException ex) {
+            Exceptions.printStackTrace(ex);
+        } catch (ClassNotFoundException ex) {
+            Exceptions.printStackTrace(ex);
+        } catch (IOException ex) {
+            Exceptions.printStackTrace(ex);
+        } catch (NoProductException ex) {
+            Exceptions.printStackTrace(ex);
+        } catch (SAXException ex) {
+            Exceptions.printStackTrace(ex);
+        } catch (Exception ex) {
+            Exceptions.printStackTrace(ex);
+        }
+    }
+}

jme3-gui/src/com/jme3/gde/gui/layer.xml

@@ -1,10 +1,19 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE filesystem PUBLIC "-//NetBeans//DTD Filesystem 1.2//EN" "http://www.netbeans.org/dtds/filesystem-1_2.dtd">
-<filesystem>
-<folder name="NiftyPalette">
-    <folder name="Items">
-         <file name="Screen" url="com/jme3/gde/gui/palette/Screen.xml">
-        </file>
-    </folder>
-</folder>
-</filesystem>
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE filesystem PUBLIC "-//NetBeans//DTD Filesystem 1.2//EN" "http://www.netbeans.org/dtds/filesystem-1_2.dtd">
+<filesystem>
+<folder name="NiftyPalette">
+    <folder name="Items">
+         <file name="Screen" url="com/jme3/gde/gui/palette/Screen.xml">
+        </file>
+    </folder>
+</folder>
+ <folder name="Navigator">
+        <folder name="Panels">
+            <folder name="text">
+                <folder name="x-niftygui+xml">
+                    <file name="org-netbeans-modules-xml-text-navigator-XMLNavigatorPanel.instance"/>
+                </folder>
+            </folder>
+        </folder>
+ </folder> 
+</filesystem>

jme3-gui/src/com/jme3/gde/gui/nodes/GElementNode.java

@@ -1,97 +1,117 @@
-/*
- * To change this template, choose Tools | Templates
- * and open the template in the editor.
- */
-package com.jme3.gde.gui.nodes;
-
-import jada.ngeditor.model.elements.GElement;
-import java.beans.PropertyEditor;
-import java.lang.reflect.InvocationTargetException;
-import java.util.Map.Entry;
-import org.openide.nodes.AbstractNode;
-import org.openide.nodes.Children;
-import org.openide.nodes.Node;
-import org.openide.nodes.Sheet;
-
-/**
- *
- * @author cris
- */
-public class GElementNode extends AbstractNode{
-    private final GElement element;
-
-    public GElementNode(GElement element) {
-        super(Children.create(new GElementChildFactory(element), false));
-        
-        this.element = element;
-        this.setName(element.getID());
-        
-    }
-    
-    public GElement getGelement(){
-        return element;
-    }
-    
-    public void updateChildren(){
-        
-    }
-    @Override
-    protected Sheet createSheet() {
-        Sheet s = super.createSheet();
-        Sheet.Set set = s.get(Sheet.PROPERTIES);
-        if (set == null) {
-            set = Sheet.createPropertiesSet();
-            s.put(set);
-        }
-        set.setName("Element Properties");
-        set.setShortDescription("You can set element properties");
-        for(Entry<String,String> pair : this.element.listAttributes().entrySet()){
-            set.put(new ElementAttributeProperty(element,pair.getKey()));
-        }
-        s.put(set);
-        return s; 
-    }
-    
-    public  class ElementAttributeProperty extends Node.Property {
-
-        private String attributeName;
-        private GElement element;
-
-        public ElementAttributeProperty(GElement element, String attributeName) {
-            super(String.class);
-            this.element = element;
-            this.attributeName = attributeName;
-            this.setName(attributeName);
-            this.setDisplayName(attributeName);
-           
-        }
-
-        @Override
-        public boolean canRead() {
-            return true;
-        }
-
-        @Override
-        public String getValue() throws IllegalAccessException, InvocationTargetException{
-            return element.getAttribute(attributeName);
-        }
-
-        @Override
-        public boolean canWrite() {
-            return true;
-        }
-
-        @Override
-        public PropertyEditor getPropertyEditor() {  
-            return super.getPropertyEditor(); //To change body of generated methods, choose Tools | Templates.
-        }
-        
-        
-
-        @Override
-        public void setValue(Object val) throws IllegalAccessException, IllegalArgumentException {
-            element.addAttribute(attributeName, val.toString());
-            element.refresh();
-        }
-    };
-}
+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package com.jme3.gde.gui.nodes;
+
+import com.jme3.gde.gui.propertyeditors.ResourceEditor;
+import com.jme3.gde.gui.propertyeditors.SizeEditor;
+import jada.ngeditor.model.elements.GElement;
+import java.beans.PropertyEditor;
+import java.lang.reflect.InvocationTargetException;
+import java.util.Map.Entry;
+import org.openide.nodes.AbstractNode;
+import org.openide.nodes.Children;
+import org.openide.nodes.Node;
+import org.openide.nodes.Sheet;
+import sun.beans.editors.BoolEditor;
+import sun.beans.editors.BooleanEditor;
+
+/**
+ *
+ * @author cris
+ */
+public class GElementNode extends AbstractNode{
+    private final GElement element;
+
+    public GElementNode(GElement element) {
+        super(Children.create(new GElementChildFactory(element), false));
+        
+        this.element = element;
+        this.setName(element.getID());
+        
+    }
+    
+    public GElement getGelement(){
+        return element;
+    }
+    
+    public void updateChildren(){
+        
+    }
+    @Override
+    protected Sheet createSheet() {
+        Sheet s = super.createSheet();
+        Sheet.Set set = s.get(Sheet.PROPERTIES);
+        if (set == null) {
+            set = Sheet.createPropertiesSet();
+            s.put(set);
+        }
+        set.setName("Element Properties");
+        set.setShortDescription("You can set element properties");
+        for(Entry<String,String> pair : this.element.listAttributes().entrySet()){
+            final ElementAttributeProperty elementAttributeProperty = new ElementAttributeProperty(element,pair.getKey());
+            pickEditor(pair, elementAttributeProperty);
+            set.put(elementAttributeProperty);
+        }
+        s.put(set);
+        return s; 
+    }
+
+    private void pickEditor(Entry<String, String> pair, final ElementAttributeProperty elementAttributeProperty) {
+        if(pair.getKey().equals("width")||pair.getKey().equals("height") || pair.getKey().equals("x") || pair.getKey().equals("y") ){
+           elementAttributeProperty.setPropertyEditor(new SizeEditor());
+        }else if(pair.getKey().equals("filename")){
+            elementAttributeProperty.setPropertyEditor(new ResourceEditor());
+        }
+        
+    }
+    
+    public  class ElementAttributeProperty extends Node.Property {
+
+        private String attributeName;
+        private GElement element;
+        private PropertyEditor editor;
+
+        public ElementAttributeProperty(GElement element, String attributeName) {
+            super(String.class);
+            this.element = element;
+            this.attributeName = attributeName;
+            this.setName(attributeName);
+            this.setDisplayName(attributeName);
+           
+        }
+
+        @Override
+        public boolean canRead() {
+            return true;
+        }
+
+        @Override
+        public String getValue() throws IllegalAccessException, InvocationTargetException{
+            return element.getAttribute(attributeName);
+        }
+
+        @Override
+        public boolean canWrite() {
+            return true;
+        }
+        
+        public void setPropertyEditor(PropertyEditor editor){
+            this.editor = editor;
+        }
+        @Override
+        public PropertyEditor getPropertyEditor() {  
+            
+            return this.editor; //To change body of generated methods, choose Tools | Templates.
+        }
+        
+        
+
+        @Override
+        public void setValue(Object val) throws IllegalAccessException, IllegalArgumentException {
+            element.addAttribute(attributeName, val.toString());
+            element.refresh();
+        }
+    };
+}

jme3-gui/src/com/jme3/gde/gui/propertyeditors/ResourceEditor.java

@@ -0,0 +1,71 @@
+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package com.jme3.gde.gui.propertyeditors;
+
+import jada.ngeditor.controller.CommandProcessor;
+import jada.ngeditor.guiviews.editors.FileChooserEditor;
+import jada.ngeditor.model.GuiEditorModel;
+import java.awt.Component;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
+import java.beans.PropertyEditorSupport;
+import java.io.File;
+import java.util.Observable;
+import java.util.Observer;
+import javax.swing.JFileChooser;
+
+/**
+ *
+ * @author cris
+ */
+public class ResourceEditor extends PropertyEditorSupport implements Observer, ActionListener{
+    private final FileChooserEditor fileChooserEditor;
+    private File assetFolder;
+    
+
+    public ResourceEditor() {
+      CommandProcessor.getInstance().getObservable().addObserver(this);
+     
+      GuiEditorModel model = (GuiEditorModel)  CommandProcessor.getInstance().getObservable();
+      this.assetFolder = model.getCurrent().getAssetFolder();
+      fileChooserEditor = new FileChooserEditor(this.assetFolder);
+      fileChooserEditor.getFileChooser().addActionListener(this);
+    }
+    
+    
+    @Override
+    public Component getCustomEditor() {
+   
+        return fileChooserEditor.getFileChooser(); //To change body of generated methods, choose Tools | Templates.
+    }
+
+    @Override
+    public boolean supportsCustomEditor() {
+        return true; //To change body of generated methods, choose Tools | Templates.
+    }
+
+    
+
+    @Override
+    public void update(Observable o, Object arg) {
+       if(o instanceof GuiEditorModel){
+           GuiEditorModel model = (GuiEditorModel) o;
+           this.assetFolder = model.getCurrent().getAssetFolder();
+       }
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        if (JFileChooser.APPROVE_SELECTION.equals(e.getActionCommand())) {
+            this.setValue(fileChooserEditor.traslateFile());
+        }
+    }
+    
+    
+    
+    
+}

jme3-gui/src/com/jme3/gde/gui/propertyeditors/SizeEditor.java

@@ -0,0 +1,59 @@
+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package com.jme3.gde.gui.propertyeditors;
+
+import java.awt.Component;
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
+import java.beans.PropertyEditorSupport;
+import java.beans.PropertyVetoException;
+import java.beans.VetoableChangeListener;
+import javax.swing.JLabel;
+import org.openide.explorer.propertysheet.ExPropertyEditor;
+import org.openide.explorer.propertysheet.PropertyEnv;
+
+/**
+ *
+ * @author cris
+ */
+public class SizeEditor  extends PropertyEditorSupport implements ExPropertyEditor, PropertyChangeListener{
+    private PropertyEnv env;
+
+    @Override
+    public void setAsText(String text) throws IllegalArgumentException {
+        super.setAsText(text); //To change body of generated methods, choose Tools | Templates.
+    }
+
+    @Override
+    public String getAsText() {
+        return super.getAsText(); //To change body of generated methods, choose Tools | Templates.
+    }
+
+    @Override
+    public Component getCustomEditor() {
+        jada.ngeditor.guiviews.editors.SizeEditor editor = new jada.ngeditor.guiviews.editors.SizeEditor();
+        editor.setValue(this.getValue());
+        editor.addPropertyChangeListener(this);
+        return editor.getComponent(); //To change body of generated methods, choose Tools | Templates.
+    }
+
+    @Override
+    public boolean supportsCustomEditor() {
+        return true; //To change body of generated methods, choose Tools | Templates.
+    }
+
+    @Override
+    public void attachEnv(PropertyEnv env) {
+        this.env = env;
+    }
+
+    @Override
+    public void propertyChange(PropertyChangeEvent evt) {
+       this.setValue(evt.getNewValue());
+    }
+
+   
+    
+}