SetStroke manipulation post creation

Question

I am working on expanding this first little demo/tutorial at http://javafx.com/samples/Draw/
I have gotten everything the way I want except for 1 thing.
for the stroke of the button to show which line thickness is currently chosen is given by javaFX script code
stroke: bind if (SIZE == size)  then FG  else null //javaFX 1.3Obviously the closest thing I can come up with is
if(SIZE==size) return FG; //javaFX 2.0 or Later
else return null;
//combined with
circle.setStroke(FG); however, no matter how I change or twist them I can never get it to set properly.
The reason I have concluded is that even if I set it up as an if statement or whatever. The problem is that its not being called, once its done being created. So I try and have the setStroke change during the setOnMousePressed() mouseEvent. (If I failed to include enough information, please see the link for the sourcecode java below)
However, due to the nature of things, I run into either the problem of it being an anonymous class not being able to access the particular circle being selected. or for some reason my Group TempC is only appearing to ever have 1 item in it, I had tried setting up a call to getChildren.get(size) // the particular size in question. Assigning it a new setstroke and trying to reinsert it back into the group. However, tempC only ever seems to have 1 circle in it. Technically because they have the same name, I can understand why. They are the same circle with different memory addresses. I also tried a dozen variations from using arrays to whatever. I keep ending up at a dead end.
Any suggestions/ideas would be greatly appreciated!
if you were curious for more information
picture: http://www.newrog.com/javafx/improved.png
demo app: http://www.newrog.com/javafx/draw.jar
source code: http://www.newrog.com/javafx/draw.java (It is a little messy right now)
To address DB question about memory and circles
if I add System.out.print(circleGroup.getChildren().size() + " ");
//after my
circleGroup.getChildren().add(circle);
//  I get "1 1 1 1 1 1 1 1 1"  in the outputNever do they accumulate, there are 9 circles in this group.
if I change it to
System.out.println(circleGroup.getChildren().get(0));  //To pull what this repeating "1" item is
/*I get in the output
Circle@19b5393
Circle@134a7d8
Circle@4fce71
Circle@1c74f37
Circle@12a3722
Circle@62937c
Circle@a31e1b
Circle@15a0305
Circle@17653ae*/So I had assumed or thought? its "the same circle but with different instances, but at different memory location/addresses"
I don't know why the group doesn't view it as a 9 different objects though.
Edited by: namrog on Jul 7, 2011 8:04 AM
Edited by: namrog on Jul 7, 2011 8:09 AM
Edited by: namrog on Jul 7, 2011 9:08 AM

Answer 1

Hi,
for me best would be to implement selected pseudo class so u can use css with it (you can even use hover, pressed pseudo classes to accomplish darker,lighter color or opacity etc), like when it is selected -fx-fill: red, -fx-stroke: blue, not selected -fx-fill: red, - fx-stroke: transparent or any other color.
see this post : Re: Image conversion between AWT and FX
I have used rectangles but it is same with circles both are inherit from shape.
For your code :
circle.setOnMousePressed(new EventHandler<MouseEvent>(){
                 public void handle(MouseEvent me){
                     SIZE = size;
                     if(SIZE == size){
                         circle.setStroke(FG);
                     }else{
                         //other circles? setStroke(BG)
                     updateSize();
             });I have used:
thumb.setOnMouseClicked(new EventHandler<MouseEvent>() {
                @Override
                public void handle(MouseEvent event) {
                    // this handler impl can be done in better way
                    System.out.println("src: " + event.getSource());
                    NodeThumb clickedThumb = (NodeThumb) event.getSource();
                    if (lastThumb == clickedThumb) {
                        return;
                    if (lastThumb != null) {
                        lastThumb.setSelected(false);
                    selectedItem.set(clickedThumb.rect);
                    clickedThumb.setSelected(true);
                    lastThumb = clickedThumb;
                    System.out.println("mainView content -> " + mainView.getChildren());
            });or for the most simple example :
all circles on start don`t have border, when u select one just remember that one (lastSelectedCircle) then u just need to deselect one circle not all, and store new value to lastSelected.
something like this (this is "written on the fly" so dont think that it actually works it is juts pseudo code):
// OLD CODE possible error i did not tried to run your code am tired, well maybe it is only error in my bloody eyes hehe
circle.setOnMousePressed(new EventHandler<MouseEvent>(){
                 public void handle(MouseEvent me){
                     SIZE = size; // -> see down line comment <-
                     if(SIZE == size){  // <------  IMO THIS SHOULD ALWAYS BE TRUE BEACUSE OF SIZE=size; line ****** ERROR LINE ******
                         circle.setStroke(FG);
                     }else{
                         //other circles? setStroke(BG) // any lines here i think wont be executed
                     updateSize();
// NEW CODE
circle.setOnMousePressed(new EventHandler<MouseEvent>(){
                 public void handle(MouseEvent me){
                     // it will be null on start when nothing is selected so you dont have to setStroke
                     if(lastSelected != null) {
                               lastSelected.setStroke(BG); // no need to change other circle BG if there is no multiple selection
                     lastSelected = (Circle)event.getSource(); // to remember last selected so it can be easy deselected
                     // now last selected has new value so set diff stroke -> all this can be also accomplished with ObjectProperty and change listener or pseudo class selected or any other way you know
                     // event.getSource(); or any other method to get selected circle
                     lastSelected.setStroke(FG);
                     updateSize();
             });Hope it helps.
EDITED:
What to say, Daryl don`t answer so fast :) joking. I was slow again writing post and other stuff at same time.
Edited by: jojorabbit on Jul 7, 2011 9:44 PM