Hi,
sorry, I forgot about the NodeList.
Unfortunately, it doesn't use the Java Collections API,
but it's similiar in function.
The elements within are instance of Node, which is a subtype of Element.
You should be able to retrieve your SVG Circle Element by calling the
"item" function as you would use "List.get(int index)" with a regular list.
What do you mean by "supposed to appear clickable"? If you want a
special cursor to appear (like, for example, when hovering the mouse
over an active hyperlink in a webpage) you have to tell Batik (which is
what the first listener in the file I linked to does. Batik has simpler
ways of doing it though, if you're content with standard cursors.)
HTH
-Urs
[EMAIL PROTECTED] wrote:
Hi there,
elt.getElementsByTagName returns NodeList, I tried this but nothing
happens, btw are the red circles suppose to appear clickable?
NodeList circleElement = elt.getElementsByTagName("circle");
Thx
yasmin
Hi Yasmin,
your code sample was:
Element element = doc.getElementById("circleGroup");
EventTarget eventTarget = (EventTarget) element;
eventTarget.addEventListener("click",new CircleAction(),false);
class CircleAction implements EventListener
{
public void handleEvent(Event evt)
{
Element elt = (Element) evt.getCurrentTarget();
if (evt.getType() == "click")
{
elt.setAttributeNS("circle","fill","yellow");
}
}
In here, you add a listener to a group(?) and afterwards, when the group
is clicked, try to set the attribute "fill" on the element "elt" in the
namespace "circle" to yellow.
Instead, what (I believe) you want to do is to set the attribute on the
element circle.
I have not tested it (and am not familiar with the W3C DOM API either,
using dom4j mainly), but maybe you could change the listeners code to:
> Element elt = (Element) evt.getCurrentTarget();
> Element circleElement = elt.getElementByTagName("circle")
> if (evt.getType() == "click") {
> circleElement.setAttributeNS(null,"fill","yellow");
> }
Oh, and maybe check for the eventtype before doing anything else,
possible saving some time at runtime.
I've not followed your discussion in detail,
but maybe you can have a look at this class from my project:
http://cvs.sourceforge.net/viewcvs.py/anathema/CharmTree/src/net/sf/anathema/charmtree/listening/CharmTreeListening.java?view=markup
Within, you'll find two EventListeners,"cursorTooltipInitListener" and
"selectionInvokingListener". The former acts on mouseover, but the
latter reacts on mouseclick events for the element it's over.
Within, the first part retrieves the target element.
(Ignore the special case of an TSpan-Element being clicked)
Then, an element ID is read from the synonymous attribute,
finally, an event is fired.
Basically, you could use this (or very simliar code) for parsing the
document whenever a click event occurs and locating the target element
by hand, thus making sure you got the circle and only the circle to
operate upon.
I guess they're way to complicated for what you intend to do, but maybe
they can help you figure out how to do it by stripping things away.
Good luck with your task
-Urs
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