Expand Tree Nodes

[pankaj.ghosh]

Hi all,

Is there a way to expand(or collapse) Nodes of a tree, from client side(using javascript)?

Basically if a tree has many levels, it is difficult to navigate to each node and expand, I was wondering if there is a way to expand(or collapse) all nodes at a tree level by a click of a button.

If not client side, I can also try doing it on server side and see if it is fast enough.

Any pointers or suggestions?

Thanks in advance
Pankaj

[domelq]

Hi i did it on client side just see the code bellow. I think also that somehow you could get state of a tree from stateVar attribute instead of hardCoded 'Richfaces_Tree_tree_tree'. The name of a tree on client side can be checked in DOM Window object

function collapseAll() {
 var tree = window['Richfaces_Tree_tree_tree'];
 var childs = tree.childs;
 collapse(childs);
}

function expandAll(){
 var tree = window['Richfaces_Tree_tree_tree'];
 var childs = tree.childs;
 expand(childs);
}



function collapse(childs) {
 for (var i = 0; i < childs.length; i++) {
 var element = childs;
 var cc = element.childs;
 if (cc.length != 0) {
 if (!element.isCollapsed()){
 collapse(cc);
 element.eventCollapsionClick();
 }
 }
 }
 }

 function expand(childs) {
 for (var i = 0; i < childs.length; i++) {
 var element = childs;
 var cc = element.childs;
 if (cc.length != 0) {
 if (element.isCollapsed){
 element.eventCollapsionClick();
 expand(cc);
 }
 }
 }
}

Hope this will help