load_node : function()

in optaplanner-docs/src/modules/ROOT/images/website/jstree/jstree.js [1275:1351]

• 69 lines of code
• 20 McCabe index (conditional complexity)

		load_node : function (obj, callback) {
			var k, l, i, j, c;
			if($.isArray(obj)) {
				this._load_nodes(obj.slice(), callback);
				return true;
			}
			obj = this.get_node(obj);
			if(!obj) {
				if(callback) { callback.call(this, obj, false); }
				return false;
			}
			// if(obj.state.loading) { } // the node is already loading - just wait for it to load and invoke callback? but if called implicitly it should be loaded again?
			if(obj.state.loaded) {
				obj.state.loaded = false;
				for(i = 0, j = obj.parents.length; i < j; i++) {
					this._model.data[obj.parents[i]].children_d = $.vakata.array_filter(this._model.data[obj.parents[i]].children_d, function (v) {
						return $.inArray(v, obj.children_d) === -1;
					});
				}
				for(k = 0, l = obj.children_d.length; k < l; k++) {
					if(this._model.data[obj.children_d[k]].state.selected) {
						c = true;
					}
					delete this._model.data[obj.children_d[k]];
				}
				if (c) {
					this._data.core.selected = $.vakata.array_filter(this._data.core.selected, function (v) {
						return $.inArray(v, obj.children_d) === -1;
					});
				}
				obj.children = [];
				obj.children_d = [];
				if(c) {
					this.trigger('changed', { 'action' : 'load_node', 'node' : obj, 'selected' : this._data.core.selected });
				}
			}
			obj.state.failed = false;
			obj.state.loading = true;
			this.get_node(obj, true).addClass("jstree-loading").attr('aria-busy',true);
			this._load_node(obj, $.proxy(function (status) {
				obj = this._model.data[obj.id];
				obj.state.loading = false;
				obj.state.loaded = status;
				obj.state.failed = !obj.state.loaded;
				var dom = this.get_node(obj, true), i = 0, j = 0, m = this._model.data, has_children = false;
				for(i = 0, j = obj.children.length; i < j; i++) {
					if(m[obj.children[i]] && !m[obj.children[i]].state.hidden) {
						has_children = true;
						break;
					}
				}
				if(obj.state.loaded && dom && dom.length) {
					dom.removeClass('jstree-closed jstree-open jstree-leaf');
					if (!has_children) {
						dom.addClass('jstree-leaf');
					}
					else {
						if (obj.id !== '#') {
							dom.addClass(obj.state.opened ? 'jstree-open' : 'jstree-closed');
						}
					}
				}
				dom.removeClass("jstree-loading").attr('aria-busy',false);
				/**
				 * triggered after a node is loaded
				 * @event
				 * @name load_node.jstree
				 * @param {Object} node the node that was loading
				 * @param {Boolean} status was the node loaded successfully
				 */
				this.trigger('load_node', { "node" : obj, "status" : status });
				if(callback) {
					callback.call(this, obj, status);
				}
			}, this));
			return true;
		},