Todo in sframe with less2

www/oldtodo/example/js/model.js

@@ -0,0 +1,120 @@
+(function (window) {
+	'use strict';
+
+	/**
+	 * Creates a new Model instance and hooks up the storage.
+	 *
+	 * @constructor
+	 * @param {object} storage A reference to the client side storage class
+	 */
+	function Model(storage) {
+		this.storage = storage;
+	}
+
+	/**
+	 * Creates a new todo model
+	 *
+	 * @param {string} [title] The title of the task
+	 * @param {function} [callback] The callback to fire after the model is created
+	 */
+	Model.prototype.create = function (title, callback) {
+		title = title || '';
+		callback = callback || function () {};
+
+		var newItem = {
+			title: title.trim(),
+			completed: false
+		};
+
+		this.storage.save(newItem, callback);
+	};
+
+	/**
+	 * Finds and returns a model in storage. If no query is given it'll simply
+	 * return everything. If you pass in a string or number it'll look that up as
+	 * the ID of the model to find. Lastly, you can pass it an object to match
+	 * against.
+	 *
+	 * @param {string|number|object} [query] A query to match models against
+	 * @param {function} [callback] The callback to fire after the model is found
+	 *
+	 * @example
+	 * model.read(1, func); // Will find the model with an ID of 1
+	 * model.read('1'); // Same as above
+	 * //Below will find a model with foo equalling bar and hello equalling world.
+	 * model.read({ foo: 'bar', hello: 'world' });
+	 */
+	Model.prototype.read = function (query, callback) {
+		var queryType = typeof query;
+		callback = callback || function () {};
+
+		if (queryType === 'function') {
+			callback = query;
+			return this.storage.findAll(callback);
+		} else if (queryType === 'string' || queryType === 'number') {
+			query = parseInt(query, 10);
+			this.storage.find({ id: query }, callback);
+		} else {
+			this.storage.find(query, callback);
+		}
+	};
+
+	/**
+	 * Updates a model by giving it an ID, data to update, and a callback to fire when
+	 * the update is complete.
+	 *
+	 * @param {number} id The id of the model to update
+	 * @param {object} data The properties to update and their new value
+	 * @param {function} callback The callback to fire when the update is complete.
+	 */
+	Model.prototype.update = function (id, data, callback) {
+		this.storage.save(data, callback, id);
+	};
+
+	/**
+	 * Removes a model from storage
+	 *
+	 * @param {number} id The ID of the model to remove
+	 * @param {function} callback The callback to fire when the removal is complete.
+	 */
+	Model.prototype.remove = function (id, callback) {
+		this.storage.remove(id, callback);
+	};
+
+	/**
+	 * WARNING: Will remove ALL data from storage.
+	 *
+	 * @param {function} callback The callback to fire when the storage is wiped.
+	 */
+	Model.prototype.removeAll = function (callback) {
+		this.storage.drop(callback);
+	};
+
+	/**
+	 * Returns a count of all todos
+	 */
+	Model.prototype.getCount = function (callback) {
+		var todos = {
+			active: 0,
+			completed: 0,
+			total: 0
+		};
+
+		this.storage.findAll(function (data) {
+			data.forEach(function (todo) {
+				if (todo.completed) {
+					todos.completed++;
+				} else {
+					todos.active++;
+				}
+
+				todos.total++;
+			});
+			callback(todos);
+		});
+	};
+
+	// Export to window
+	window.app = window.app || {};
+	window.app.Model = Model;
+})(window);