Gerald/...,
I have a recursive method for walking through a checkbox tree at
once. The method is called by a command(-Button) under the tree.
(Reason is I don't want a servertrip at every "check" but wish to
process all checked nodes at once)
The algoritm I use is: (selectedNodesIDs is an array of Strings for
the SELECTED Node IDs)
It walks recursively through the tree and adds selected nodes to this
dedicated array.
public void handleLeafs(TreeNodeBase node){
if(selectedNodesIDs == null)selectedNodesIDs= new
ArrayList<String>();
// simple case first: if node is Leaf, we check whether it is
checked:
logger.info("Handling of the selected Nodes starts now...");
if(node.isLeaf()){
logger.info("Node is a Leaf");
if(((TreeNodeChecked)node).isChecked()){
getSelectedNodesIDs().add(node.getIdentifier());
logger.info("Node with this ID was gecheckt: "+ node.getIdentifier
());
}
}
// normal case: if node has kids --> we recursively get to the
Leafs to check them out:
else if(node.getChildCount() >0){
logger.info("Node has kids which we will start treating
now...");
List<TreeNodeBase> childs =
(List<TreeNodeBase>)node.getChildren();
for (TreeNodeBase nodeSub : childs) {
if(nodeSub.isLeaf()){
logger.info("Node is Leaf - is it
checked?");
// it is a leaf now, --> it is a
TreeNodeCheked
if(((TreeNodeChecked)nodeSub).isChecked()){
getSelectedNodesIDs().add(nodeSub.getIdentifier());
logger.info("Node met deze ID was gecheckt: "+
node.getIdentifier());
} else {logger.info("Node was not
checked");}
}
else {handleLeafs(nodeSub);}
}
}
else {logger.info("Node at this level has no kids... ");}
}
The tree2 is defined like this:
<t:tree2 id="clientTree" value="#{calmgmtbean.treeRootNode}"
var="node" varNodeToggler="t" clientSideToggle="true"
preserveToggle="false" >
<f:facet name="root">
<h:panelGroup>
<h:outputLabel value="#{labels.calMgmt_tree_rootTxt}"
styleClass="inhoudKolom2"/>
</h:panelGroup>
</f:facet>
<f:facet
name="calendarSet">
<h:panelGroup>
<t:graphicImage value="../pics/calMgmt/blue-folder-open.gif"
border="0" rendered="#{t.nodeExpanded}"/>
<t:graphicImage value="../pics/calMgmt/blue-folder-
closed.png" border="0" rendered="#{!t.nodeExpanded}"/>
<h:outputLabel value="#{labels.calMgmt_tree_calSetTxt} : #
{node.description}" styleClass="inhoudKolom2"/>
<h:outputText value=" (#{node.childCount})"
styleClass="childCount" rendered="#{!empty node.children}"/>
</h:panelGroup>
</f:facet>
<f:facet name="trigger">
<h:panelGroup>
<h:selectBooleanCheckbox
value="#{node.checked}" />
<h:outputText value=" #{node.description} "
style="font-size:12px;font-style:italic;color:darkgrey;font-
family:verdana;"/>
</h:panelGroup>
</f:facet>
</t:tree2>
Yet, the checked values are not retained. The method's log output
always writes "Node was not checked"...
Any idea on how to remedy this?
"Funny" thing is: used to work in the past, but apparently broke with
one of the upgrades. (Tomahawk) & I moved to T115 to avoid problems
with other components...
Wolf
On 11 Aug 2006, at 13:33, Gerald Müllan wrote:
The boolean checkbox is set according to the value binding.
In your case is this the expression value="#{node.checked}", but you
don`t influence the checked variable in your code.
You only need to get the new value out of the event:
event.getNewValue()
and set the checked variable to it.
cheers,
Gerald
On 8/10/06, Johnny Gonzalez <[EMAIL PROTECTED]> wrote:
Hello Gerald,
Sorry for taking to long to answer,...
the part of the JSP I have is this:
<t:tree2 id="serverTree" value="#{EntradasBean.modeloArbol}"
var="node"
varNodeToggler="t" clientSideToggle="true">
<f:facet name="opcion">
<h:panelGroup>
<h:selectBooleanCheckbox
title="#{node.description}" value="#{node.checked}"
valueChangeListener="#{EntradasBean.checkBoxSelected}"
onchange="this.form.submit()" immediate="true"/>
<h:outputText value="#
{node.description}"
style="FONT: xx-small Verdana, Arial, Helvetica, sans-serif;"
styleClass="nodeFolder"/>
</h:panelGroup>
</f:facet>
<f:facet name="menu">
<h:panelGroup>
<h:selectBooleanCheckbox
title="#{node.description}" value="true"
valueChangeListener="#{EntradasBean.checkBoxSelected}"
onchange="this.form.submit()" immediate="true"/>
<h:outputText value="*"
rendered="#{t.nodeSelected}" />
<h:outputText value="#
{node.description}"
styleClass="nodeFolder" style="FONT: xx-small Verdana, Arial,
Helvetica,
sans-serif;" />
</h:panelGroup>
</f:facet>
<f:facet name="raiz">
<h:panelGroup>
<h:selectBooleanCheckbox
title="#{node.description}" value="true"
valueChangeListener="#{EntradasBean.checkBoxSelected}"
onchange="this.form.submit()" immediate="true"/>
<h:outputText value="#
{node.description}"
styleClass="nodeFolder" style="FONT: xx-small Verdana, Arial,
Helvetica,
sans-serif;" />
</h:panelGroup>
</f:facet>
</t:tree2>
and in the backing bean I have:
this is the valueChangeEvent method:
public void checkBoxSelected(ValueChangeEvent event){
FacesContext contexto = FacesContext.getCurrentInstance();
// Obtengo la sesion en que estamos
HttpSession sesion = ( HttpSession )
contexto.getExternalContext().getSession( false );
// Objeto para manejar el radio button
HtmlSelectBooleanCheckbox select =
( HtmlSelectBooleanCheckbox )
event.getComponent();
String valor = new String();
if(select.getValue().equals(true)){
valor = ( String ) select.getTitle();
System.out.println("ValueChange: "+valor);
this.checkBoxSelected.add(valor);
}
select.setValue(new Boolean(true));
for(String s: this.checkBoxSelected){
System.out.println(this.checkBoxSelected.size());
System.out.println(s);
}
}
What do you think about it?
thanks a lot,
Johnny
Gerald Müllan <[EMAIL PROTECTED]> escribió:
Hi,
have you set the value attribute of the h:selectBooleanCheckbox
component?
What do you do in the backend method?
Would be helpful if you could support with some code fragments.
cheers,
Gerald
On 8/9/06, Johnny Gonzalez wrote:
> Hello everybody,
>
> I have built a tree with selectBooleanCheckbox, I wrote a
valuechange
event
> to store if every of the h:selectBooleanCheckbox, were selected,
but after
> the method is executed the page is repainted and the
h:selectBooleanCheckbox
> that I selected appears unchecked, why this strange behaviour?
>
> TIA,
>
> Johnny
>
>
> ________________________________
>
> LLama Gratis a cualquier PC del Mundo.
> Llamadas a fijos y móviles desde 1 céntimo por minuto.
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>
>
--
Gerald Müllan
Schelleingasse 2/11
1040 Vienna, Austria
0043 699 11772506
[EMAIL PROTECTED]
________________________________
LLama Gratis a cualquier PC del Mundo.
Llamadas a fijos y móviles desde 1 céntimo por minuto.
http://es.voice.yahoo.com
--
Gerald Müllan
Schelleingasse 2/11
1040 Vienna, Austria
0043 699 11772506
[EMAIL PROTECTED]
