i ran into an interesting problem that igor helped me solve yesterday. i
wanted to get the X, Y coordinate when the user clicks on an image instead
of using an image map because of some very fancy hit-testing and logic i
wanted to do on the server. image maps were not cutting it. anyway, what
we came up with was this useful piece of code:
image.add(new AjaxEventBehavior("onclick") {
@Override
protected CharSequence getCallbackScript(
boolean
onlyTargetActivePage) {
return generateCallbackScript("wicketAjaxGet('"
+ getCallbackUrl(onlyTargetActivePage)
+ "&x=' + event.offsetX + '&y=' +
event.offsetY");
}
@Override
protected void onEvent(AjaxRequestTarget target) {
WebRequest request = ThoofWebRequest.get();
final Map<String, String[]> parameters = request
.getParameterMap();
final int x = Integer.parseInt(parameters.get("x")[0]);
final int y = Integer.parseInt(parameters.get("y")[0]);
--
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