Thx Matti, it helped indeed.
This is what I was looking for.
I believe however this only works for trees having depth==1, whereas
Michael's method works for all depths, perhaps that is an advantage.
For Michael's method, I wonder whether, if a user changes his mind
e.g. 3 times on the same node, producing 3 ValueChangeEvents, the 2
redundant VCE will be processed. Also this method would be less
efficient with lost of nodes having only few leaves. Like
Michaelsaid, it really depends on the biz casus.
As for the depth-1 thing, adding a recursive call (like: if hasKids()
{recursive_call()_on_kids();} to your processNodes() method would
most likely solve that, making it a depth-first algorithm.
& Thanks for the input,
Phil
Ps Matthias, wouldn't it a good idea to add this to http://
wiki.apache.org/myfaces/Tree2 ?
On 23 May 2006, at 17:55, Matthias Wessendorf wrote:
Phil-
I used it this way:
JSP:
...
<t:tree2 id="tree" value="#{tree.tree}" clientSideToggle="true"
varNodeToggler="t" var="node">
<f:facet name="analysisFolder">
<h:panelGroup>
<h:selectBooleanCheckbox value="#{node.checked}" />
<t:graphicImage value="images/yellow-folder-closed.png" border="0"/>
<h:outputText value="#{node.description}" styleClass="nodeFolder"/>
</h:panelGroup>
</f:facet>
...
</t:tree2>
<h:commandLink value="GO" action="#{tree.processNodes}"/>
</h:form>
...
Backing Bean (constructor or init() in case of Shale's ViewControler)
(btw. AnalysisFolder is an business object of me...)
-------------------------
tree = new TreeNodeBase("root","Analyses",false);
for (Iterator iter = listOfAnalysisFolders.iterator(); iter.hasNext
();) {
AnalysisFolder element = (AnalysisFolder) iter.next();
tree.getChildren().add(
new TreeNodeChecked("analysisFolder", element.getName(),
element.getId(), false, true));
selectedIds.add(new SelectItem(element.getId()));
}
-------------------------
action method:
-------------------------
public String processNodes(){
List childs = tree.getChildren();
for (Iterator iter = childs.iterator(); iter.hasNext();) {
TreeNodeChecked element = (TreeNodeChecked) iter.next();
if(element.isChecked()==true) {
//do...
}
}
...
}
-------------------------
HTH,
Matthias
On 5/23/06, Philippe Lamote <[EMAIL PROTECTED]> wrote:
Hi,
I'm sory for this question, but there's not too much doc about this
on site, so... here we go:
I want to make a tree2 with checkboxes that I only collect once
together, and I could use some advice:
The examples I've seen, have the commandlink at every node, by
consequence fire off the second one gets clicked.
What I want, is:
- a CLIENT side tree2 (for speed)
- with checkboxes on every leaf element
- multiple leafs can be checked simultaneously ("simultaneously"
meaning before a new request fires off)
- under the tree a cmd button to ONLY THEN fire off an action.
The action should then perform an opeation on all the checked leafs.
I guess thsi is possible, but how to do this best?
If possible, I'd like a solution without javascript to collect the
checked nodes, yet if no other way exits, that's fine too.
With js I thought of smth like: (if it works, "addToRequest(#
{node.identifier});" ... should add the node ID to the request. So
all checked nodes would be sent with the request wen the cmd button
under the tree gets clicked.)
<t:tree2 id="clientTree" value="#{calmgmtbean.treeModel}"
var="node" varNodeToggler="t">
<f:facet name="setsTree">
<h:panelGroup>
<h:selectBooleanCheckbox
onclick="addToRequest(#
{node.identifier});" />
<t:graphicImage value="..pics/calMgmt/
document.png" border="0"/>
<h:outputText value="#{node.description}"
styleClass="#
{t.nodeSelected ? 'treeSetSelected':'treeSetUnselected'}"/>
</h:panelGroup>
</f:facet>
</t:tree2>
If possible, I would like to get rid of "addToRequest(#
{node.identifier});", of even better of the entire
"h:selectBooleanCheckbox" and use checkedNode (smth Matthias
Wessendorf provided us with for convenience - thank you Matthias! :-)
Yet in that case, how to collect all the ckecked nodes at the server
side?
Is it necessary to walk over all the nodes and perform a isChecked
check? (if so, does someone here has some tested code for this? Would
be a ice addition to http://wiki.apache.org/myfaces/Tree2 as well.
I think this would also be a fine candidate for a build-in method, to
ship with the ckeckNode tree. As with a checkednode tree, you have
the great option to batch process all checked nodes at once,
serverside, compared to all the servertrips per checked node you'd
have without a checkednode tree. (this is what I love most about it,
it's a great idea, yet now I guess every dev has to program the same
method over and over again for tree-traversal)
Thanks in advance,
Phil
--
Matthias Wessendorf
Aechterhoek 18
48282 Emsdetten
http://jroller.com/page/mwessendorf
mwessendorf-at-gmail-dot-com
