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YAHOO.ext.tree.TreeSorter = function(tree, config){
YAHOO.ext.util.Config.apply(this, config);
tree.on('beforechildrenrendered', this.doSort, this, true);
tree.on('append', this.updateSort, this, true);
tree.on('insert', this.updateSort, this, true);
var dsc = this.dir && this.dir.toLowerCase() == 'desc';
var p = this.property || 'text';
var sortType = this.sortType;
var fs = this.folderSort;
var cs = this.caseSensitive === true;
this.sortFn = function(n1, n2){
if(fs){
if(n1.leaf && !n2.leaf){
return 1;
}
if(!n1.leaf && n2.leaf){
return -1;
}
}
var v1 = sortType ? sortType(n1) : (cs ? n1[p] : n1[p].toUpperCase());
var v2 = sortType ? sortType(n2) : (cs ? n2[p] : n2[p].toUpperCase());
if(v1 < v2){
return dsc ? +1 : -1;
}else if(v1 > v2){
return dsc ? -1 : +1;
}else{
return 0;
}
};
};
YAHOO.ext.tree.TreeSorter.prototype = {
doSort : function(node){
node.sort(this.sortFn);
},
compareNodes : function(n1, n2){
return (n1.text.toUpperCase() > n2.text.toUpperCase() ? 1 : -1);
},
updateSort : function(tree, node){
if(node.childrenRendered){
this.doSort.defer(1, this, [node]);
}
}
};
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