Hi Francesco:
I have found some possible situations:
First, on the "svgCanvas.addSVGLoadEventDispatcherListener" you are calling "registerListeners()", and in this method you are still calling the "onNewClickAction()" method.
root.addEventListener( SVGConstants.SVG_MOUSEDOWN_EVENT_TYPE , new OnNewClickAction(), false);
And the way you are assigning the EventTarget is the other possible source of problem.
The way I have it implemented is, first I will show a abstract of the SVG file:
<SVG ......>
<g id="dragGroup" style="">
<....... all the elements that will be draggable inside this group ....>
</g>
Then, the registerListeners() method, CALLED ONLY ONCE from the SVGLoadEventDispatcherListener, is like this:
public void registerListeners() {
// Gets an element from the loaded document.
elt = document.getElementById("dragGroup"); <------------------------ see the g id!!
EventTarget t = (EventTarget)elt;
// Adds 'mouseevent' listeners
t.addEventListener("mousedown", new OnDownAction(), false);
t.addEventListener("mousemove", new OnMoveAction(), false);
t.addEventListener("mouseup", new OnUpAction(), false);
t.addEventListener("mouseover", new OnOverAction(), false);
t.addEventListener("click", new OnClickAction(), false);}
And then i simply add elements or remove them from this Element "elt" using:
elt.appendChild(someElement); or, elt.removeChild(someElement);
I do not mess with trying to assign individual listener events to every object. The listener is assigned to the "g" element, and any child of the "g" element inherits the listener abilities, so you only need to get the target from the Event in the onMoveAction() (or any other overridden event method).
Hope this helps you,
Andres.
public class OnMoveAction implements EventListener {
public void handleEvent(Event evt) {
DOMMouseEvent q = (DOMMouseEvent)evt; if(selected){
NamedNodeMap map = node.getAttributes();
//place it so that the mouse-pointer is in the center of the object
SVGOMElement svgCurrentElement = (SVGOMElement)target;
SVGContext context = svgCurrentElement.getSVGContext();
Rectangle2D box2D = context.getBBox();
int height = (int)box2D.getX();
int width = (int)box2D.getY();
AffineTransform AT = new AffineTransform();
AT.translate((double)(q.getClientX()-width/2),(double)(q.getClientY()- height/2));
context.setScreenTransform( AT );
}
}
}
/* public class OnMouseDownAction implements EventListener {
public void handleEvent(Event evt) {
// Select Element to drop
DOMMouseEvent dme = (DOMMouseEvent)evt;
EventTarget nuovoTarget = dme.getTarget();
svgCurrentElement = (SVGOMElement)nuovoTarget;
}
} */
public class OnDownAction implements EventListener {
public void handleEvent(Event evt) {
DOMMouseEvent q = (DOMMouseEvent)evt;
target = q.getTarget();
removeListeners();
registerListeners(target);
node = (Node)target;
selected = true; }
}
public class OnUpAction implements EventListener {
public void handleEvent(Event evt) { removeListeners(target);
registerListeners();
target = null;
selected = false; }
}
}
}
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