How to collapse rich:tree to its root nodes from a Bean

[brian13]

Hello,

How can I associate a CommandLink with a rich:tree whose Bean action when activated
will collapse the tree to its root nodes ? I would like to implement the action to collapse
the tree preferably in the Java Bean as Java code.

Thanks for your assistance in advance...
Regards,
-- Brian

[nbelaevski]

Hi Brian,

Use org.richfaces.component.UITree.queueCollapseAll() method.

[brian13]

Hi Nick,

I have tried using this method but it does not seem to work... are there any other methods that need to be used along with it ?

Thanks,
-- Brian

[nbelaevski]

No, how does you call it?

[brian13]

Hi Nick,

The queueCollapseAll() seems to work if called within the context of a Tree, but I would
Like to collapse the tree externally from a commandLink or commandButton by passing
a link to the UItree obtained via one of the listeners in the tree and call this method from
the action externally ... this does not seem to work. Calling the method within the tree
works.

Thanks,
--Brian

[ilya_shaikovsky]

sorry but can't confirm using simple test-case

<h:form id="form">
 <rich:tree style="width:300px" value="#{library.data}" var="item" nodeFace="#{item.type}" id="tree">
 <rich:treeNode type="artist" iconLeaf="/images/tree/singer.gif" icon="/images/tree/singer.gif">
 <h:outputText value="#{item.name}" />
 </rich:treeNode>
 <rich:treeNode type="album" iconLeaf="/images/tree/disc.gif" icon="/images/tree/disc.gif">
 <h:outputText value="#{item.title}" />
 </rich:treeNode>
 <rich:treeNode type="song" iconLeaf="/images/tree/song.gif" icon="/images/tree/song.gif">
 <h:outputText value="#{item.title}" />
 </rich:treeNode>
 </rich:tree>
 <a4j:commandLink actionListener="#{userBean.collapseTreeById}" value="collapse" reRender="tree">
 <f:param value="form:tree" name="treeId"/>
 </a4j:commandLink>
 </h:form>

public void collapseTreeById(ActionEvent event) throws IOException {
 String treeId = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("treeId");
 UIViewRoot viewRoot = FacesContext.getCurrentInstance().getViewRoot();
 UITree tree = (UITree)viewRoot.findComponent(treeId);
 tree.queueCollapseAll();
 }

[brian13]

Hello Ilya,
Thanks for the suggestion, but the problem we are having is that the tree is in a different
subview and the command link is in a different subview, the below suggested approch
does not seem to work
here is how the setup is:
<subview id=subview1>
<h:form id="form">
<rich:tree style="width:300px" value="#{library.data}" var="item" nodeFace="#{item.type}" id="tree">
<rich:treeNode type="artist" iconLeaf="/images/tree/singer.gif" icon="/images/tree/singer.gif">
<h:outputText value="#{item.name}" />
</rich:treeNode>
<rich:treeNode type="album" iconLeaf="/images/tree/disc.gif" icon="/images/tree/disc.gif">
<h:outputText value="#{item.title}" />
</rich:treeNode>
<rich:treeNode type="song" iconLeaf="/images/tree/song.gif" icon="/images/tree/song.gif">
<h:outputText value="#{item.title}" />
</rich:treeNode>
</rich:tree>
</h:form>

<subview id=subview2>
<h:form id=form2>
<a4j:commandLink actionListener="#{userBean.collapseTreeById}" value="collapse" reRender="tree">
<f:param value="form:tree" name="treeId"/>
</a4j:commandLink>
</h:form>

What would be the appropriate collapseTreeById method in such a case ?

Thanks,
-- Brian