Tags
People
Badges
Help-
CORE FRAMEWORK
FEATURED COMPONENTS
-
RESOURCES
-
LEARN ZK
RESOURCES
Hey guys,
I'm looking for 2 event for drag and drop operations:
1. An event that gets fired when the D&D operation has started.
2. An event that gets called WHILE the user is dragging an item.
Are there such events in ZK? I've been searching for some time now but couldn't find anything.
Nope, no solution yet.
Only thing I could think of is to use JavaScript's onMouseOver event and then fire an event manually to the server.
..neata :p
zk provides the possibility to override the following getDragOptions_ function in order to give more specific behaviour for the dragging effect. here you have it for start drag and stop drag.
a question though. how can the drag event be generalized? for a listbox with draggable listitems, how can the onDrag event be generalized and not specific on $label_test?
<zk>
<style>
.label16-black-bold.z-label { background: transparent;
font-family: 'Lucida Sans Unicode', 'Lucida Grande', sans-serif;
color: #000000; font-size: 16px; font-weight: bold; }
</style>
<script type="text/javascript">
<![CDATA[ zk.afterLoad("zul.wgt", function () {
zul.wgt.Label.prototype.getDragOptions_ = function (map) {
$widget = zk.Widget.$(this);
map.starteffect = function (dg) {
zAu.send(new zk.Event($widget, 'onStartDrag', null));
}
map.endeffect = function (dg) {
zAu.send(new zk.Event($widget, 'onStopDrag', null));
}
return map; }
}); ]]>
</script>
<div apply="TestDragController">
<label id="label_test" value="Test label" draggable="true"
sclass="label16-black-bold" ></label>
</div>
</zk>
and the TestDragController.java
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.event.Event;
public class TestDragController extends GenericForwardComposer {
public void onStartDrag$label_test(Event event) {
System.out.println("Dragging started!");
}
public void onStopDrag$label_test(Event event) {
System.out.println("Dragging stoped");
}
}
Hm, did you test that code?
For me, it looks like if this line applies to ALL labels, so it is already generalized and not id-specific:
zul.wgt.Label.prototype.getDragOptions_ = ....
..you are right. it is general in the javascript code but it is specific in the controller on the label_test id
onStartDrag$label_test
..neata :p
found it! the specific call is made by the $widget in the javascript
zAu.send(new zk.Event($widget, 'onStartDrag', null));
public void onStartDrag(Event event) {
System.out.println("Dragging started!");
}
ps: here are the widget packages if you wanna use panel (in zul.wnd) instead of label (in zul.wgt) for example, or any other zk components
have fun with it
iulia
Nice,
but what's "neata"? :-)
..neata means morning in romanian :)
by the way, $widget.desktop has a better coverage than $widget.parent. i'd recommend to use desktop instead
but desktop does not work when include is involved. does anyone know how can the original desktop of the include component be retrieved?
Neata,
what do you mean by "include"?
Asked: 2012-01-28 09:55:26 +0800
Seen: 462 times
Last updated: Aug 06 '12