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 package org.netbeans.modules.ada.editor;

 import java.awt.Image;

 import java.text.DateFormat;

 import org.openide.filesystems.FileAttributeEvent;

 import org.openide.filesystems.FileChangeListener;

 import org.openide.filesystems.FileEvent;

 import org.openide.filesystems.FileRenameEvent;

 import org.openide.loaders.DataNode;

 import org.openide.loaders.DataObject;

 import org.openide.nodes.FilterNode.Children;

 import org.openide.util.ImageUtilities;

 import org.openide.util.Lookup;

 /**

  *

  * @author Andrea Lucarelli

  */

 public class AdaDataNode extends DataNode implements FileChangeListener {

     private static final String ADS_ICON = "/org/netbeans/modules/ada/editor/resources/icons/ads-16.png";

     private static final String ADB_ICON = "/org/netbeans/modules/ada/editor/resources/icons/adb-16.png";

     private static final String ADA_SPEC_ICON = "/org/netbeans/modules/ada/editor/resources/icons/ada-spec-16.png";

     private static final String ADA_BODY_ICON = "/org/netbeans/modules/ada/editor/resources/icons/ada-body-16.png";

     private AdaDataObject obj;

     private String displayName;

     private String tooltip;

     private Image icon;

     public AdaDataNode(AdaDataObject obj) {

         super(obj, Children.LEAF);

         this.obj = obj;

     }

     public AdaDataNode(DataObject obj, Lookup lookup) {

         super(obj, Children.LEAF, lookup);

         //Add file change listener to the FileObject:

         //obj.getPrimaryFile().addFileChangeListener(this);

         //Set default icon:

         if (obj.getPrimaryFile().getExt().equalsIgnoreCase("ads")) {

             setIconBaseWithExtension(ADS_ICON);

             icon = ImageUtilities.loadImage(ADS_ICON);

         } else if (obj.getPrimaryFile().getExt().equalsIgnoreCase("adb")) {

             setIconBaseWithExtension(ADB_ICON);

             icon = ImageUtilities.loadImage(ADB_ICON);

         } else {

             // TODO: manage the contents for set the icon

             setIconBaseWithExtension(ADA_SPEC_ICON);

             icon = ImageUtilities.loadImage(ADA_SPEC_ICON);

         }

         //Set default tooltip:

         tooltip = obj.getPrimaryFile().getNameExt();

         setShortDescription (tooltip);

     }

     @Override

     public String getDisplayName() {

         if (null != displayName) {

             return displayName;

         }

         return super.getDisplayName();

     }

     @Override

     public String getShortDescription() {

         if (null != tooltip) {

             return tooltip;

         }

         return super.getShortDescription();

     }

     @Override

     public Image getIcon(int arg0) {

         if (null != icon) {

             return icon;

         }

         return super.getIcon(arg0);

     }

     //When the file changes...

     @Override

     public void fileChanged(FileEvent arg0) {

         //Get the milliseconds and format it:

         long mills = System.currentTimeMillis();

         DateFormat dateFormatter = DateFormat.getDateTimeInstance(

                 DateFormat.LONG,

                 DateFormat.LONG);

         String formatted = dateFormatter.format(mills);

         //Save the current display name:

         String oldDisplayName = displayName;

         //Save the current tooltip:

         String oldShortDescription = tooltip;

         //Set the new display name:

         displayName = "Change (" + formatted + ")";

         //Set the new tooltip:

         tooltip = formatted;

         //Fire change events on the node,

         //which will immediately refresh it with the new values:

         fireDisplayNameChange(oldDisplayName, displayName);

         fireShortDescriptionChange(oldShortDescription, tooltip);

         fireIconChange();

     }

     @Override

     public void fileFolderCreated(FileEvent arg0) {

     }

     @Override

     public void fileDataCreated(FileEvent arg0) {

     }

     @Override

     public void fileDeleted(FileEvent arg0) {

     }

     @Override

     public void fileRenamed(FileRenameEvent arg0) {

     }

     @Override

     public void fileAttributeChanged(FileAttributeEvent arg0) {

     }

 }