Implement Item#data. Closes #188.

src/item/Item.js

@@ -602,7 +602,51 @@ var Item = this.Item = Base.extend(Callback, {
 	// TODO: get/setIsolated (print specific feature)
 	// TODO: get/setKnockout (print specific feature)
 	// TODO: get/setAlphaIsShape
-	// TODO: get/setData
+
+	/**
+	 * A plain javascript object which can be used to store
+	 * arbitrary data on the item.
+	 *
+	 * @type Object
+	 * @bean
+	 *
+	 * @example
+	 * var path = new Path();
+	 * path.data.remember = 'milk';
+	 * 
+	 * @example
+	 * var path = new Path();
+	 * path.data.malcolm = new Point(20, 30);
+	 * console.log(path.data.malcolm.x); // 20
+	 * 
+	 * @example
+	 * var path = new Path();
+	 * path.data = {
+	 * 	home: 'Omicron Theta',
+	 * 	found: 2338,
+	 * 	pets: ['Spot']
+	 * };
+	 * console.log(path.data.pets.length); // 1
+	 * 
+	 * @example
+	 * var path = new Path({
+	 * 	data: {
+	 * 		home: 'Omicron Theta',
+	 * 		found: 2338,
+	 * 		pets: ['Spot']
+	 * 	}
+	 * });
+	 * console.log(path.data.pets.length); // 1
+	 */
+	getData: function() {
+		if (!this._data)
+			this._data = {};
+		return this._data;
+	},
+
+	setData: function(data) {
+		this._data = data;		
+	},
 
 	/**
 	 * {@grouptitle Position and Bounding Boxes}

test/tests/Item.js

@@ -557,3 +557,33 @@ test('Item#isInserted', function() {
 	group.remove();
 	equals(item.isInserted(), false);
 });
+
+test('Item#data', function() {
+	var item = new Path();
+	var description = 'When accessed before any data was set, a plain object is created for us';
+	equals(Base.isPlainObject(item.data), true, description);
+
+	var item = new Path();
+	item.data.test = true;
+	equals(item.data.test, true, description);
+
+	var item = new Path();
+	var point = new Point();
+	item.data.point = point;
+	equals(item.data.point, point, 'We can set basic types on data');
+
+	var item = new Path();
+	item.data = {
+		testing: true
+	}
+	equals(item.data.testing, true, 'we can set data using an object literal');
+
+	var item = new Path({
+		data: {
+			testing: true
+		}
+	});
+	equals(item.data.testing, true, 'we can set data using an object literal constructor');
+
+	// TODO: add tests to see if importing and exporting of Item#data works
+});