Hello,
It's the first time I'm developing an own component, so I think my problems
have a very simple solution. I want to develop a component for drag and drop
using the dojo toolkit.
But my component is by now very simple. It only renders a div Tag around its
children.
The component is a simple class extending UIComponentBase and only overriding
getFamily and the saveState/restoreState methods.
The renderer is extending javax.faces.render.Renderer and overrides encodeBegin
and ecodeEnd to write the div Tag.
The div tag should get a unique id and I thought the clientId would be the
right choice:
@Override
public void encodeBegin(FacesContext context, UIComponent component)
throws IOException {
if ((context == null) || (component == null)) {
throw new NullPointerException();
}
Draggable draggable = (Draggable) component;
if (draggable.isRendered()) {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("div", component);
writer.writeAttribute("id", draggable.getClientId(context),
"clientId");
}
}
But if I embed the component (tcc:draggable) in a Trinidad Treetable the div
tag is rendered to the client with the same clientid for all rows in the tree
table. What do I have to change to have a unique id for each row in the table?
For tr:outputText it works?!
<f:facet name="nodeStamp">
<tr:column>
<f:facet name="header">
<tr:outputText value="Name (Level / Total
Number of Children)" />
</f:facet>
<tcc:draggable>
<tr:outputText
inlineStyle="font-weight:bold;cursor:move;"
value="(#{treeNode.depth} /
#{treeNode.totalNumberOfChildren}) #{treeNode.displayName}"
rendered="#{not treeNode.isVirtual}"/>
<tr:outputText
inlineStyle="font-weight:bold;cursor:move;"
rendered="#{treeNode.isVirtual}"
value="(#{treeNode.depth} /
#{treeNode.totalNumberOfChildren}) #{treeNode.displayName}"
styleClass="treeEditorVirtualNodeRowText" />
</tcc:draggable>
</tr:column>
</f:facet>
When I have reached a more advanced level of knowledge in component development
I hope I will be able to donate my drag&drop component to tomahawk or Trinidad.
Regards
Jochen
