$.fn.jstree = function()

in optaplanner-docs/src/modules/ROOT/images/website/jstree/jstree.js [224:254]

• 24 lines of code
• 19 McCabe index (conditional complexity)

	$.fn.jstree = function (arg) {
		// check for string argument
		var is_method	= (typeof arg === 'string'),
			args		= Array.prototype.slice.call(arguments, 1),
			result		= null;
		if(arg === true && !this.length) { return false; }
		this.each(function () {
			// get the instance (if there is one) and method (if it exists)
			var instance = $.jstree.reference(this),
				method = is_method && instance ? instance[arg] : null;
			// if calling a method, and method is available - execute on the instance
			result = is_method && method ?
				method.apply(instance, args) :
				null;
			// if there is no instance and no method is being called - create one
			if(!instance && !is_method && (arg === undefined || $.isPlainObject(arg))) {
				$.jstree.create(this, arg);
			}
			// if there is an instance and no method is called - return the instance
			if( (instance && !is_method) || arg === true ) {
				result = instance || false;
			}
			// if there was a method call which returned a result - break and return the value
			if(result !== null && result !== undefined) {
				return false;
			}
		});
		// if there was a method call with a valid return value - return that, otherwise continue the chain
		return result !== null && result !== undefined ?
			result : this;
	};