Recent Posts by Geertjan Wielenga

JGrid was announced last week so I wanted to integrate it into a NetBeans Platform app. I.e., I'd like to use Nodes instead of the DefaultListModel that is supported natively, so that I can integrate with the Properties Window, for example: Here's how: import de.jgrid.JGrid;import java.beans.PropertyVetoException;import javax.swing.DefaultListModel;import javax.swing.JScrollPane;import javax.swing.event.ListSelectionEvent;import javax.swing.event.ListSelectionListener;import...

In Part 1: The Challenge, published this time last week, I introduced a "brain teaser". The brain teaser asks you to figure out how to allow images and other files to be meaningfully dropped onto a NetBeans Platform application, i.e., on the drop something useful should happen with the dropped file: if the file is an image, the image should open in the IDE; if the file is a PDF document, the PDF viewer should open externally; if the file is a text file, it should open as a...

The next step is to activate the undo/redo functionality... for a Node. Something I've not seen done before. I.e., when the Node is renamed via F2 on the Node, the "Undo/Redo" buttons should start working. Here is the start of the solution, via this item in the mailing list and Timon Veenstra's BeanNode class, note especially the items in bold: public class ShipNode extends BeanNode implements PropertyChangeListener, UndoRedo.Provider { private final InstanceContent...

I was reading this new article on Synthetica and NetBeans RCP this morning, when I remembered this screenshot from Henry Arousell from Sweden: Here, Nimbus is heavily being used, highlighting 6 areas where Henry would really benefit from any help regarding how the foreground properties should be set: The color of the main menu (and its subsequent unfolded menu options) The TopComponent tab colors (as you can see from the screenshot, they'vemanaged to change the foreground colors...

This time, including a SaveCapability for the Node: public class ShipNode extends BeanNode implements PropertyChangeListener { private final InstanceContent ic; private final ShipSaveCapability saveCookie; public ShipNode(Ship bean) throws IntrospectionException { this(bean, new InstanceContent()); } public ShipNode(Ship bean, InstanceContent ic) throws IntrospectionException { super(bean, Children.LEAF, new ProxyLookup(new AbstractLookup(ic),...

This time, the other way round. I want to be able to click F2 on a node, change its name inline, and then have the editor component's fields updated, as well as the related display in the Properties window. In the Node: @Overridepublic boolean canRename() { return true;}@Overridepublic void setName(String s) { Ship c = getLookup().lookup(Ship.class); String oldDisplayName = c.getType(); c.setType(s); fireNameChange(oldDisplayName, s);} And, in the editor...

I need to remember how to synchronize property changes across viewer/editor/properties windows, in demos. This is how: PropertyChangeSupport in the Bean. Like this: public class Ship implements Serializable { public static final String TYPE = "type"; public static final String YEAR = "year"; public static final String COLOR = "color"; private String type; private int year; private Color color; private PropertyChangeSupport propertySupport; public...

geertjan:~/netbeans-7.0/bin$ ./netbeans --help General options:   --help                show this help   --jdkhome <path>      path to Java(TM) 2 SDK, Standard Edition   -J<jvm_option>        pass <jvm_option> to JVM   --cp:p <classpath>    prepend <classpath> to classpath   --cp:a <classpath>    append <classpath> to classpath Module reload options:   --reload /path/to/module.jar  Installs or reinstalls a module JAR file. Additional Module(s) Option(s):  --open...

I created an app on the NetBeans Platform that, at start up, looks like the "FileAbsorber" image on the left: So, at startup, there's no menu bar and no toolbar, all is blank and empty. However, I am able to drag images from outside the application, e.g., from the list of images you see on the right above, into the application and, when I do so, a new window is created whenever I drop the image, containing the image that I dropped: As you can see, above there are multiple...