Newtouch.CascadeSelect = {
    cascade : function(id, value, callback) {
	var childId = document["_nt-cs_-childId:" + id];
	$("#__"+childId+"__loading").show();
	if (childId == undefined) {
	    return;
	}
	this.clearChild(childId);

	var action = document['_nt-cs_-id:' + childId + '-action'];
	var params = document['_nt-cs_-id:' + childId + '-params'];
	var textField = document['_nt-cs_-id:' + childId + '-text'];
	var valueField = document['_nt-cs_-id:' + childId + '-value'];
	var defaultValue = document['_nt-cs_-id:'+ childId + '-defaultValue'];
	params.value = value;
	var parent = document['_nt-cs_-id:' + childId + '-parentId'];
	var path = "";
	var xpath = params.xpath;
	// 修复职业选择多层级累计导致报错的问题
	var prefix = xpath.substring(0,xpath.indexOf("/"));
	xpath = prefix+"/default/*";
	path = this.searchGrandfather(parent,path);
	if(path != ""){
		xpath = xpath.replace("*",path+"*");
		params.xpath = xpath;
	}
	if(value==null||value==""){
		$("#__"+childId+"__loading").hide();
		return;
	}
	$("#"+id).attr("disabled",true);
	Newtouch.Ajax.sendParams(params, action, function(result) {

	    $("#__"+childId+"__loading").hide();
	    
	    if(result._value != undefined){
			$('#'+childId).html(result._value);
		}else{
		    if (result && result.length > 0) {
				for ( var i = 0; i < result.length; i++) {
				    $('#' + childId)[0].options.add(new Option(result[i][textField], result[i][valueField]))
				}
				$('#' + childId).val(defaultValue);
		    }
	    }
	    $("#"+id).attr("disabled",false);

	    if(callback){
			callback($("#"+id));
		}
	}, function(result) {
		$("#"+id).attr("disabled",false);
	    alert(result);
	});
    },
    clearChild : function(childId) {
	//清理下级
    if (childId) {
	$('#' + childId)[0].options.length = 1;
    }
    //需要递归重置子select为空集合	
    if (typeof document["_nt-cs_-childId:" + childId] != "undefined" && document["_nt-cs_-childId:" + childId]) {
		this.clearChild(document["_nt-cs_-childId:" + childId]);
    }else{
    	$('#' + childId)[0].options.selectedIndex = 0;
    }
    },
    searchGrandfather : function(id,path){
    	var grandfather = document['_nt-cs_-id:' + id + '-parentId'];
    	if(grandfather && grandfather != ""){
    		path = "*[@code='"+$("#"+grandfather).val()+"']/"+path;
    		path = this.searchGrandfather(grandfather,path);
    	}
    	return path;
    	

    }
}