Eclipse Graphiti, How to create "CustomFeature's create & get all Elements"?

Question

I have 2 questions, maybe somebody can give me an idea how i can do this

I've created new "testFeature" extended from AbstractCustomFeature and can call it in my Diagram. How can i get a List which contains all Elements from the Diagram?(i want to update their names and colors at start and later)

My second question is: I'm trying to add some Elements to the Diagram without drag and drop them from the palette.

For example i have some Elements saved in the Diagram and my "model say i miss 3 Elements in the Diagram". I want to write an Custom Feature, which draw/put missing Elements in the Graphiti Diagram with just one/two clicks, maybe i need to use Zest at this part? but at the beginning i just want to put few elements without drop them from the Palette, how can i do this?

Maybe somebody can give me direction?

Thanks for your help!

Answer 1

ok! here is my solution:

class testFeature extends AbstractCustomFeature {
    //...
      public void execute(ICustomContext context) {
          Diagram diagram = getDiagram();                     //get Diagram
          EList<Shape> diagramChildren= diagram.getChildren();//get List with all Children's
          Iterator<Shape> it = diagramChildren.iterator();    //Build iterator for this List


          //go through all objects which are in the Diagram
          while (it.hasNext()) {
              Shape testObjekt = it.next();                                                 
              PictogramElement pe =  testObjekt.getGraphicsAlgorithm().getPictogramElement(); 
              Object bo = getBusinessObjectForPictogramElement(pe);
              //BUILD YOUR EMF & GRAPHITI projects together!!!!
              //otherwise you get always false after editor restart
              if (bo instanceof graphicElement) {
                  graphicElement sElement = (graphicElement)bo;
                  if(pe instanceof ContainerShape){
                      RoundedRectangle testR= (RoundedRectangle) pe.getGraphicsAlgorithm();
                      //testR is my RoundedRectangle like in help tutorial

                      //changes are possible here:
                      //...

                      ContainerShape cs = (ContainerShape) pe;
                      for (Shape shape : cs.getChildren()) {
                        //set Name
                          if (shape.getGraphicsAlgorithm() instanceof Text) {
                              Text text = (Text) shape.getGraphicsAlgorithm();
                                text.setValue("new name!");
                          }
                          //set Line color
                          if (shape.getGraphicsAlgorithm() instanceof Polyline) {
                              Polyline polyline = (Polyline)shape.getGraphicsAlgorithm();
                              polyline.setForeground(manageColor(myColorGreen));
                              polyline.setLineWidth(3);
                          }
                      }
                  }
              }
          }