Hi Janice,
I suggest you read the DOM Events specification:
http://www.w3.org/TR/2000/REC-DOM-Level-2-Events-20001113/events.html
"Janice Tan" <[EMAIL PROTECTED]> wrote on 04/25/2006 10:21:38 PM:
> i have another class to create the SVGDocument. in this class, i use a
for
> loop to create 'rect' elements for the bar segments.
> Element e = document.createElementNS(svgNS, "rect");
> e.setAttributeNS(null, "x", "xPos");
> ....
> root.appendChild(e);
>
> based on ur solution, does it mean that i would have to do something
like
> assign an id to the rect element and then:
If you want you can attach the listener directly to the rects as
you are creating them. The important part of the whole thing is that
essentially all SVG elements implement the 'EventTarget' interface so
you can call 'addEventListener(String type, EventListener l, boolean
useCapture)'
on them to register to have your listener object's handleEvent method
called
when an event of type 'type' occurs with that element.
> also i would have to create another class for the DisplayAbout
EventListener.
> does this mean that for each event, i have to create a separate class?
or can
> i put them all into a single class?
You can have a single class and check the 'type' member of the Event
object
passed to know why you're listener is called, but I typically register
different listeners for different event types.
It can also be useful to add custom attributes to elements that your
listener can use to decide what action to take.
> On 4/26/06, Lewis Keen <[EMAIL PROTECTED]> wrote:
> Janice,
>
> In my project (Texas Hold'em poker game) I have an about button
> element called "about" that has the register listener following line
> in Java:
>
> pokerTable.registerListener("about","click",new DisplayAbout());
>
> which calls the following method in my PokerTable (Main GUI) class:
>
> public void registerListener(String element,String
> action,EventListener listener)
> {
> try
> {
> Element elt = doc.getElementById(element);
> EventTarget t = (EventTarget)elt;
> t.addEventListener(action,listener,false);
> }catch(Exception ex)
> {
> System.out.println("Error whilst registering
Listener:
> "+ex.getMessage());
> }
> }
>
> then my DisplayAbout EventListener does this:
>
> public class DisplayAbout implements EventListener {
> public void handleEvent(Event evt) {
> Thread displayThread=new Thread(){
> public void run(){
> try{
> SplashScreen splash=new SplashScreen();
> splash.setVisible(true);
> }
> catch (Exception ex)
> {
> System.out.println("An error with the poker client
has
> occured: "+ex.getMessage());
> }
> }
> };
> displayThread.start();
> }
> }
>
> So basically my method assigns a click EventListener on an XML element
> in the document.
>
> Rinse and repeat for other elements/eventlisteners. I love how simple
> and consequently how quick it is to expand :)
>
> Hope this helps,
>
> Lewis Keen
> Final Year, Software Engineering
> De Montfort University, Leicester
>
> On 4/25/06, janice tan < [EMAIL PROTECTED]> wrote:
> >
> > hi,
> >
> > am trying to implement a java application and have been trying to make
use
> > of the batik plugin with eclipse. i have been sucessful in creating a
svg
> > document for a bar chart and adding it to a JSVGCanvas to display.
however,
> > i would like to make my svg interactive and would need to include some
> > mouseevents, linking and even loading anotehr svg on top.
> > i have previously managed to do this in javascript. but am not sure if
its
> > possible through java.
> >
> > thanks
>
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