Visual

If you create the persistence.xml manually in Windows the file will be created with CRLF line endings (windows style line endings), that will prevent Netbeans for recognizing- Netbeans will not recognize it as the special file it is and won’t be able to to open it with the special/custom visual editor. [/caption] I opened an bug report netbeans issue #172538. At the beginning, I thought the problem was due to different line ending CRLF vs LF issues, but as pointed out in the bug report the line ending has nothing to do with it. It’s just the IDE restart what is needed, no need to change the line endings. ...

I spent some time on GraphBrowser, starting off the project, the first step has been to add basic support for opeining Graphviz DOT files. There are already some pages on the net talking about how to add open file support for new file types in NetBeans. File Type Integration Tutorial So there is no need to explain how to do it in a detailed way. The first main step is to invoke New File Type wizard on the module (in my case MainModule) to add the basic files to support the file type. ...

I decided to start a small project trying to port the GUESS framework into Netbeans RCP. The plan is to replace the GUESS own graphical library with Netbeans Visual Library stuff and replace the GUESS Python like interpreter with something more along the lines of JSR 223 Scripting for the Java Platform. For the moment I created the project at kenai.

I was fiddling with the Netbeans Visual Library again, trying to show a complex graph on screen and I run into a problem: There were so many connection in the graph that some widgets were hard to read because the ConnectionWidget arrows were printed over them. So I tried to I try to rearrange the order of my LayerWidgets to paint the LabelWidgets on top of ConnectionWidgets. A call to mainLayer.bringToFront() should be enough, but this is what I got when I tried that: ...

If you’re getting a NullPointerException stacktrace like the one below while using the Netbeans Visual Library to create your own GraphScene, check that your adding your widgets propertly to scene. A good idea is to use LayerWidgets, declaring them in the constructor of your GraphScene: mainLayer = new LayerWidget(this); addChild(mainLayer); connectionLayer = new LayerWidget(this); addChild(connectionLayer); and then add the widgets to those layers in attachNodeWidget and attachEdgeWidget: @Override protected Widget attachNodeWidget(String node) { LabelWidget w = new LabelWidget(this, node); w.setBorder(BORDER4); w.getActions().addAction(createSelectAction()); w.getActions().addAction(createObjectHoverAction()); w.getActions().addAction(ActionFactory.createMoveAction()); this.mainLayer.addChild(w); return w; } @Override protected Widget attachEdgeWidget(String edge) { ConnectionWidget w = new ConnectionWidget(this); w.setTargetAnchorShape(AnchorShape.TRIANGLE_FILLED); this.connectionLayer.addChild(w); return w; } The stacktrace: ...

I just came up with the idea of reproducing the GraphView demo I saw in prefuse by using the Netbeans Visual Library API. The GraphView demo uses a Force Directed Layout algorithm to dinamically position the nodes on the screen. It’s really fast and cool. Download prefuse and experiment with it by yourself. I wanted to achieve something similiar with the Visual Library and I succeed up to a point. The force based layout algorithm that I implemented is much simpler that the used in prefuse, so there is no spring-like movement. It looks way cooler with springs. It just uses repulsion between nodes and attraction between connected nodes. ...