create_node : function()

in optaplanner-docs/src/modules/ROOT/images/website/jstree/jstree.js [3827:3909]
72 lines of code
28 McCabe index (conditional complexity)

		create_node : function (par, node, pos, callback, is_loaded) {
			if(par === null) { par = $.jstree.root; }
			par = this.get_node(par);
			if(!par) { return false; }
			pos = pos === undefined ? "last" : pos;
			if(!pos.toString().match(/^(before|after)$/) && !is_loaded && !this.is_loaded(par)) {
				return this.load_node(par, function () { this.create_node(par, node, pos, callback, true); });
			}
			if(!node) { node = { "text" : this.get_string('New node') }; }
			if(typeof node === "string") {
				node = { "text" : node };
			} else {
				node = $.extend(true, {}, node);
			}
			if(node.text === undefined) { node.text = this.get_string('New node'); }
			var tmp, dpc, i, j;

			if(par.id === $.jstree.root) {
				if(pos === "before") { pos = "first"; }
				if(pos === "after") { pos = "last"; }
			}
			switch(pos) {
				case "before":
					tmp = this.get_node(par.parent);
					pos = $.inArray(par.id, tmp.children);
					par = tmp;
					break;
				case "after" :
					tmp = this.get_node(par.parent);
					pos = $.inArray(par.id, tmp.children) + 1;
					par = tmp;
					break;
				case "inside":
				case "first":
					pos = 0;
					break;
				case "last":
					pos = par.children.length;
					break;
				default:
					if(!pos) { pos = 0; }
					break;
			}
			if(pos > par.children.length) { pos = par.children.length; }
			if(!node.id) { node.id = true; }
			if(!this.check("create_node", node, par, pos)) {
				this.settings.core.error.call(this, this._data.core.last_error);
				return false;
			}
			if(node.id === true) { delete node.id; }
			node = this._parse_model_from_json(node, par.id, par.parents.concat());
			if(!node) { return false; }
			tmp = this.get_node(node);
			dpc = [];
			dpc.push(node);
			dpc = dpc.concat(tmp.children_d);
			this.trigger('model', { "nodes" : dpc, "parent" : par.id });

			par.children_d = par.children_d.concat(dpc);
			for(i = 0, j = par.parents.length; i < j; i++) {
				this._model.data[par.parents[i]].children_d = this._model.data[par.parents[i]].children_d.concat(dpc);
			}
			node = tmp;
			tmp = [];
			for(i = 0, j = par.children.length; i < j; i++) {
				tmp[i >= pos ? i+1 : i] = par.children[i];
			}
			tmp[pos] = node.id;
			par.children = tmp;

			this.redraw_node(par, true);
			/**
			 * triggered when a node is created
			 * @event
			 * @name create_node.jstree
			 * @param {Object} node
			 * @param {String} parent the parent's ID
			 * @param {Number} position the position of the new node among the parent's children
			 */
			this.trigger('create_node', { "node" : this.get_node(node), "parent" : par.id, "position" : pos });
			if(callback) { callback.call(this, this.get_node(node)); }
			return node.id;
		},