/**
* Additional tree utils
*
*/
dojo.provide("dojo.widget.TreeControllerExtension");
dojo.declare(
"dojo.widget.TreeControllerExtension",
null,
{
saveExpandedIndices: function(node, field) {
var obj = {};
for(var i=0; i<node.children.length; i++) {
if (node.children[i].isExpanded) {
var key = dojo.lang.isUndefined(field) ? i : node.children[i][field];
obj[key] = this.saveExpandedIndices(node.children[i], field);
}
}
return obj;
},
restoreExpandedIndices: function(node, savedIndices, field) {
var _this = this;
var handler = function(node, savedIndices) {
this.node = node; //.children[i];
this.savedIndices = savedIndices; //[i];
// recursively read next savedIndices level and apply to opened node
this.process = function() {
//dojo.debug("Callback applied for "+this.node);
_this.restoreExpandedIndices(this.node, this.savedIndices, field);
};
}
for(var i=0; i<node.children.length; i++) {
var child = node.children[i];
var found = false;
var key = -1;
//dojo.debug("Check "+child)
// process field set case
if (dojo.lang.isUndefined(field) && savedIndices[i]) {
found = true;
key = i;
}
// process case when field is not set
if (field) {
for(var key in savedIndices) {
//dojo.debug("Compare "+key+" "+child[field])
if (key == child[field]) {
found = true;
break;
}
}
}
// if we found anything - expand it
if (found) {
//dojo.debug("Found at "+key)
var h = new handler(child, savedIndices[key]);
_this.expand(child, false, h, h.process);
} else if (child.isExpanded) { // not found, so collapse
//dojo.debug("Collapsing all descendants "+node.children[i])
dojo.lang.forEach(child.getDescendants(), function(elem) { _this.collapse(elem); });
//this.collapse(node.children[i]);
}
}
}
});