Jochen,
just a short mail;
see here for some infos on findComponent():
http://weblogs.java.net/blog/jhook/archive/2006/02/new_feature_for.html
-Matthias
On 12/5/06, Böhringer Jochen <[EMAIL PROTECTED]> wrote:
Hello,
I am developing custom components to support drag and drop. This components are
based on the Trinidad PPR capabilities and Dojo for the drag and drop
rendering. I have one Draggable component and a DropZone component. If a
Draggable component is dropped on a DropZone component the client side
Javascript executes a _adfspu() call which contains the draggable's client id
and the dropzone's client id. The decode method in my DropZoneRenderer parses
the draggable's id from the request and tries to find the corresponding
component via UIXComponentBase#findComponent(id).
But if I place my Draggable inside a TreeTable the generated clientIds contain
a digit to express the row of the table the Draggable is part of:
e.g.:
_id25:treeTableId:0:_id40
_id25:treeTableId:1:_id40
_id25:treeTableId:2:_id40
I prepend a NamingContainer.SEPARATOR_CHARACTER to advice the findComponent()
method that the id is an absolute one:
:_id25:treeTableId:0:_id40
:_id25:treeTableId:1:_id40
:_id25:treeTableId:2:_id40
But my findComponet call fails with the exception below. If I debug the
findComponent method I can see, that the the UIXComponentBase#_findInsideOf()
method can't find the digit ids inside the naming container of my treetable. Is
there another possibility to get Access to my draggable component from inside
my dropzone Renderer? And is the behaviour of UIXComponentBase.findComponent a
bug or a known limitation?
As additional info: Even if I omit the prepended SEPERATOR_CHARACTER the
findComponent method fails with the same exception but a little bit different
stack trace.
java.lang.IllegalArgumentException
at
org.apache.myfaces.trinidad.component.UIXComponentBase.findComponent(UIXComponentBase.java:450)
at
org.apache.myfaces.trinidad.component.UIXComponentBase.findComponent(UIXComponentBase.java:451)
at
org.apache.myfaces.trinidad.component.UIXComponentBase.findComponent(UIXComponentBase.java:451)
at
org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.DropZoneRenderer.decode(DropZoneRenderer.java:152)
at
org.apache.myfaces.trinidad.component.UIXComponentBase.__rendererDecode(UIXComponentBase.java:1011)
my decode method:
@Override
public void decode(FacesContext context, UIComponent component) {
if (component.isRendered()) {
DropZone dropZone = (DropZone) component;
Map<String, String> parameterMap =
context.getExternalContext()
.getRequestParameterMap();
String source = parameterMap.get("source");
String clientId = component.getClientId(context);
String draggableClientId =
parameterMap.get("draggableClientId");
if (draggableClientId != null && draggableClientId.length() >
0) {
Draggable draggable = (Draggable) component
.findComponent(draggableClientId);
if ((source != null) && source.equals(clientId)) {
new DragAndDropEvent(component, draggable,
dropZone)
.queue();
System.out.println("Action event queued for value:
"
+ dropZone.getValue());
if (getPartialSubmit(getFacesBean(component))) {
PartialPageUtils.forcePartialRendering(context);
}
}
}
}
}
Regards
Jochen
--
Matthias Wessendorf
http://tinyurl.com/fmywh
further stuff:
blog: http://jroller.com/page/mwessendorf
mail: mwessendorf-at-gmail-dot-com
