TodoMVC using SAPUI5

labs/architecture-examples/sapui5/css/base.css

+html,
+body {
+	margin: 0;
+	padding: 0;
+}
+
+button {
+	margin: 0;
+	padding: 0;
+	border: 0;
+	background: none;
+	font-size: 100%;
+	vertical-align: baseline;
+	font-family: inherit;
+	color: inherit;
+	-webkit-appearance: none;
+	-moz-appearance: none;
+	-ms-appearance: none;
+	-o-appearance: none;
+	appearance: none;
+}
+
+body {
+	font: 14px 'Helvetica Neue', Helvetica, Arial, sans-serif;
+	line-height: 1.4em;
+	background: #eaeaea url('../img/bg.png');
+	color: #4d4d4d;
+	width: 550px;
+	margin: 0 auto;
+	-webkit-font-smoothing: antialiased;
+	-moz-font-smoothing: antialiased;
+	-ms-font-smoothing: antialiased;
+	-o-font-smoothing: antialiased;
+	font-smoothing: antialiased;
+}
+
+.sapUiTv, .sapUiBtnS {
+	font: inherit;
+	font-size: inherit;
+}
+
+#todoapp {
+	background: #fff;
+	background: rgba(255, 255, 255, 0.9);
+	margin: 130px 0 40px 0;
+	border: 1px solid #ccc;
+	position: relative;
+	border-top-left-radius: 2px;
+	border-top-right-radius: 2px;
+	box-shadow: 0 2px 6px 0 rgba(0, 0, 0, 0.2),
+				0 25px 50px 0 rgba(0, 0, 0, 0.15);
+}
+
+#todoapp:before {
+	content: '';
+	border-left: 1px solid #f5d6d6;
+	border-right: 1px solid #f5d6d6;
+	width: 2px;
+	position: absolute;
+	top: 0;
+	left: 40px;
+	height: 100%;
+}
+
+#todoapp input::-webkit-input-placeholder {
+	font-style: italic;
+}
+
+#todoapp input:-moz-placeholder {
+	font-style: italic;
+	color: #a9a9a9;
+}
+
+#todoapp h1 {
+	position: absolute;
+	top: -120px;
+	width: 100%;
+	font-size: 70px;
+	font-weight: bold;
+	text-align: center;
+	color: #b3b3b3;
+	color: rgba(255, 255, 255, 0.3);
+	text-shadow: -1px -1px rgba(0, 0, 0, 0.2);
+	-webkit-text-rendering: optimizeLegibility;
+	-moz-text-rendering: optimizeLegibility;
+	-ms-text-rendering: optimizeLegibility;
+	-o-text-rendering: optimizeLegibility;
+	text-rendering: optimizeLegibility;
+}
+
+#header {
+	padding-top: 15px;
+	border-radius: inherit;
+}
+
+#header:before {
+	content: '';
+	position: absolute;
+	top: 0;
+	right: 0;
+	left: 0;
+	height: 15px;
+	z-index: 2;
+	border-bottom: 1px solid #6c615c;
+	background: #8d7d77;
+	background: -webkit-gradient(linear, left top, left bottom, from(rgba(132, 110, 100, 0.8)),to(rgba(101, 84, 76, 0.8)));
+	background: -webkit-linear-gradient(top, rgba(132, 110, 100, 0.8), rgba(101, 84, 76, 0.8));
+	background: -moz-linear-gradient(top, rgba(132, 110, 100, 0.8), rgba(101, 84, 76, 0.8));
+	background: -o-linear-gradient(top, rgba(132, 110, 100, 0.8), rgba(101, 84, 76, 0.8));
+	background: -ms-linear-gradient(top, rgba(132, 110, 100, 0.8), rgba(101, 84, 76, 0.8));
+	background: linear-gradient(top, rgba(132, 110, 100, 0.8), rgba(101, 84, 76, 0.8));
+	filter: progid:DXImageTransform.Microsoft.gradient(GradientType=0,StartColorStr='#9d8b83', EndColorStr='#847670');
+	border-top-left-radius: 1px;
+	border-top-right-radius: 1px;
+}
+
+#main {
+	position: relative;
+	z-index: 2;
+	border-top: 1px dotted #adadad;
+}
+
+#new-todo,
+.sapUiTfBrd.sapUiTfRo.todo,
+.sapUiTfBrd.sapUiTfStd.todo {
+	position: relative;
+	margin: 0;
+	margin-right: 153px;
+	width: 100%;
+	font-size: 24px;
+	font-family: inherit;
+	line-height: 1.4em;
+	background-color: transparent;
+	border: 0;
+	outline: none;
+	color: #4D4D4D;
+	padding: 6px;
+	-webkit-box-sizing: border-box;
+	-moz-box-sizing: border-box;
+	-ms-box-sizing: border-box;
+	-o-box-sizing: border-box;
+	box-sizing: border-box;
+	-webkit-font-smoothing: antialiased;
+	-moz-font-smoothing: antialiased;
+	-ms-font-smoothing: antialiased;
+	-o-font-smoothing: antialiased;
+	font-smoothing: antialiased;
+}
+
+.sapUiTfBrd.sapUiTfStd.todo {
+	border: 1px solid #999;
+	box-shadow: inset 0 -1px 5px 0 rgba(0, 0, 0, 0.2);
+}
+
+.sapUiTfBrd.sapUiTfRo.todo[data-completed="true"] {
+	color: #a9a9a9;
+	text-decoration: line-through;
+}
+
+#toggle-all {
+	display: block;
+	outline: none;
+}
+
+#toggle-all input {
+	z-index: 3;
+	position: absolute;
+	text-align: center;
+	top: 9px;
+	left: -15px;
+	width: 65px;
+	height: 41px;
+	-webkit-transform: rotate(90deg);
+	/* transform: rotate(90deg); */
+	-webkit-appearance: none;
+	appearance: none;
+}
+
+#toggle-all input:before {
+	content: '»';
+	font-size: 28px;
+	color: #d9d9d9;
+	padding: 0 25px 7px;
+}
+
+#toggle-all input:checked:before {
+	color: #737373;
+}
+
+#new-todo {
+	padding: 15px 15px 16px 60px;
+	border: none;
+	background: rgba(0, 0, 0, 0.02);
+	z-index: 2;
+	box-shadow: none;
+}
+
+#todo-list {
+	margin: 0;
+	padding: 0;
+	list-style: none;
+}
+
+#todo-list li {
+	position: relative;
+	font-size: 24px;
+	border-top: 1px dotted #ccc;
+}
+
+#todo-list input[type='checkbox'] {
+	text-align: center;
+	width: 40px;
+	/* auto, since non-WebKit browsers doesn't support input styling */
+	height: auto;
+	position: absolute;
+	top: 0;
+	bottom: 0;
+	margin: auto 0;
+	-webkit-appearance: none;
+	/*-moz-appearance: none;*/
+	-ms-appearance: none;
+	-o-appearance: none;
+	appearance: none;
+}
+
+#todo-list input[type='checkbox']:after {
+	content: '✔';
+	line-height: 62px;
+	font-size: 20px;
+	color: #d9d9d9;
+	text-shadow: 0 -1px 0 #bfbfbf;
+}
+
+#todo-list input[type='checkbox']:checked:after {
+	color: #85ada7;
+	text-shadow: 0 1px 0 #669991;
+	bottom: 1px;
+	position: relative;
+}
+
+#todo-list input:not([type='checkbox']) {
+	word-break: break-word;
+	padding: 15px;
+	margin-left: 45px;
+	display: block;
+	line-height: 1.2em;
+	-webkit-transition: color 0.4s;
+	-moz-transition: color 0.4s;
+	-ms-transition: color 0.4s;
+	-o-transition: color 0.4s;
+	transition: color 0.4s;
+}
+
+#todo-list li .destroy {
+	outline: none;
+	background-color: transparent;
+	display: none;
+	position: absolute;
+	top: 0;
+	right: 10px;
+	bottom: 0;
+	width: 40px;
+	height: 40px;
+	margin: auto 0;
+	font-size: 22px;
+	color: #a88a8a;
+	-webkit-transition: all 0.2s;
+	-moz-transition: all 0.2s;
+	-ms-transition: all 0.2s;
+	-o-transition: all 0.2s;
+	transition: all 0.2s;
+}
+
+#todo-list li .destroy:hover {
+	text-shadow: 0 0 1px #000,
+				 0 0 10px rgba(199, 107, 107, 0.8);
+	-webkit-transform: scale(1.3);
+	-moz-transform: scale(1.3);
+	-ms-transform: scale(1.3);
+	-o-transform: scale(1.3);
+	transform: scale(1.3);
+}
+
+#todo-list li .destroy:after {
+	content: '✖';
+}
+
+#todo-list li:hover .destroy {
+	display: block;
+}
+
+#todo-list .sapUiRrNoData,
+#todo-list .sapUiRrPtb,
+#todo-list .sapUiRrFtr {
+	display: none;
+}
+
+#footer {
+	color: #777;
+	padding: 0 15px;
+	position: absolute;
+	right: 0;
+	bottom: -31px;
+	left: 0;
+	height: 20px;
+	z-index: -1;
+	text-align: center;
+}
+
+#footer:before {
+	content: '';
+	position: absolute;
+	right: 0;
+	bottom: 31px;
+	left: 0;
+	height: 50px;
+	z-index: -1;
+	box-shadow: 0 1px 1px rgba(0, 0, 0, 0.3),
+				0 6px 0 -3px rgba(255, 255, 255, 0.8),
+				0 7px 1px -3px rgba(0, 0, 0, 0.3),
+				0 43px 0 -6px rgba(255, 255, 255, 0.8),
+				0 44px 2px -6px rgba(0, 0, 0, 0.2);
+}
+
+#footer #AllTodos, #footer #ActiveTodos, #footer #CompletedTodos {
+	color: #83756f;
+}
+
+#footer #clear-completed {
+	color: inherit;
+}
+
+#footer .sapUiHLayoutChildWrapper:nth-of-type(1) {
+	float: left;
+	text-align: left;
+}
+
+#todo-count {
+	vertical-align: 1px;
+}
+
+#todo-count:first-letter {
+	font-weight: bold;
+}
+
+#filters {
+	margin: 0;
+	padding: 0 2px 0 0;
+	position: absolute;
+	right: 0;
+	left: 0;
+	outline: none;
+}
+
+#filters .sapUiBtnStd,
+#filters .sapUiBtnFoc {
+	background-color: transparent;
+	font-weight: normal;
+	outline: none;
+	padding-right: 3px;
+	margin-top: -1px;
+}
+
+#filters .sapUiSegButtonSelected.sapUiBtnStd,
+#filters .sapUiSegButtonSelected.sapUiBtnAct.sapUiBtnFoc {
+	font-weight: bold;
+}
+
+#footer .sapUiHLayoutChildWrapper:nth-of-type(3) {
+	float: right;
+}
+
+#clear-completed {
+	float: right;
+	position: relative;
+	line-height: 20px;
+	text-decoration: none;
+	background: rgba(0, 0, 0, 0.1);
+	font-size: 11px;
+	padding: 0 10px;
+	border-radius: 3px;
+	box-shadow: 0 -1px 0 0 rgba(0, 0, 0, 0.2);
+	height: 20px;
+	outline: none;
+}
+
+@-moz-document url-prefix() {
+	#clear-completed {
+		top: -22px;
+	}
+}
+
+#clear-completed:hover {
+	background: rgba(0, 0, 0, 0.15);
+	box-shadow: 0 -1px 0 0 rgba(0, 0, 0, 0.3);
+}
+
+#info {
+	margin: 65px auto 0;
+	color: #a6a6a6;
+	font-size: 12px;
+	text-shadow: 0 1px 0 rgba(255, 255, 255, 0.7);
+	text-align: center;
+}
+
+#info a {
+	color: inherit;
+}

labs/architecture-examples/sapui5/index.html

+<!DOCTYPE HTML>
+<html>
+	<head>
+		<meta charset="utf-8">
+		<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
+
+		<title>SAPUI5 • TodoMVC</title>
+
+		<script
+			src="https://sapui5.netweaver.ondemand.com/resources/sap-ui-core.js"
+			id="sap-ui-bootstrap"
+			data-sap-ui-libs="sap.ui.commons,sap.ui.ux3,sap.ui.table"
+			data-sap-ui-theme="base">
+		</script>
+
+		<link href="css/base.css" rel="stylesheet" type="text/css">
+
+		<script src="js/app.js"></script>
+	</head>
+	<body role="application">
+		<section id="todoapp">
+			<header id="header">
+				<h1>todos</h1>
+			</header>
+			<section id="main"></section>
+		</section>
+		<footer id="info">
+			<p>Double-click to edit a todo</p>
+			<p>Written by Harald Schubert. Based on SAP UI5.</p>
+			<p>Part of <a href="http://todomvc.com/">TodoMVC</a>.</p>
+		</footer>
+	</body>
+</html>

labs/architecture-examples/sapui5/js/app.js

+/*global jQuery, sap */
+/*jshint unused:false */
+
+(function () {
+	'use strict';
+
+	var oRootView;
+
+	jQuery.sap.registerModulePath('todo', 'js/todo');
+
+	// build the application root view and place on page
+	oRootView = sap.ui.view({
+		type: sap.ui.core.mvc.ViewType.JS,
+		id: 'todoView',
+		viewName: 'todo.Todo'
+	});
+
+	oRootView.placeAt('main');
+})();

labs/architecture-examples/sapui5/js/todo/SmartTextField.js

+/*global jQuery, sap */
+/*jshint unused:false */
+
+/*
+ * A text field that supports placeholder values and autofocus
+ */
+(function () {
+	'use strict';
+
+	jQuery.sap.declare('todo.SmartTextField');
+
+	jQuery.sap.require('sap.ui.core.Core', 'sap.ui.commons.TextField');
+
+	sap.ui.commons.TextField.extend('todo.SmartTextField', {
+		metadata: {
+			properties: {
+				placeholder: 'string',
+				autofocus: 'boolean',
+				strongediting: 'boolean'
+			}
+		},
+		renderer: {
+			renderInnerAttributes: function (oRm, oTextField) {
+				if (oTextField.getProperty('placeholder')) {
+					oRm.writeAttributeEscaped('placeholder', oTextField
+						.getPlaceholder());
+				}
+			}
+		},
+		onAfterRendering: function (e) {
+			var $domRef = this.$();
+			if (this.getProperty('autofocus')) {
+				$domRef.focus();
+			}
+
+			if (this.getProperty('strongediting')) {
+				this.setEditable(false);
+
+				this.attachBrowserEvent('dblclick', function (e) {
+					var $domRef = this.$();
+					this.setEditable(true);
+					$domRef.get(0).selectionStart = $domRef.get(0).selectionEnd = $domRef.val().length;
+				});
+
+				this.attachChange(function () {
+					this.setEditable(false);
+				});
+			}
+		},
+		onfocusout: function (e) {
+			if (this.getProperty('strongediting')) {
+				if (!this.getEditable()) {
+					return;
+				}
+
+				this.setEditable(false);
+				this.getModel().updateBindings(true);
+			}
+		}
+	});
+})();

labs/architecture-examples/sapui5/js/todo/Todo.controller.js

+/*global jQuery, sap, todo */
+/*jshint unused:false */
+
+/*
+ * Performs no UI logic and has therefore has no references to UI controls.
+ * Accesses and modifies model and relies on data binding to inform UI about changes.
+ */
+(function () {
+	'use strict';
+
+	jQuery.sap.require('todo.TodoPersistency');
+
+	sap.ui.controller('todo.Todo', {
+
+		// Stores todos permanently via HTML5 localStorage
+		store: new todo.TodoPersistency('todos'),
+
+		// Stores todos for the duration of the session
+		model: null,
+
+		// Retrieve todos from store and initialize model
+		onInit: function () {
+			var data = null;
+			if (this.store.isEmpty()) {
+				data = this.store.set({
+					todos: []
+				}).get();
+			} else {
+				data = this.store.get();
+			}
+			this.model = new sap.ui.model.json.JSONModel(data);
+			this.getView().setModel(this.model);
+		},
+
+		// Create a new todo
+		createTodo: function (todo) {
+			todo = todo.trim();
+			if (todo.length === 0) {
+				return;
+			}
+
+			this.model.setProperty('/todos/', this.model.getProperty('/todos/')
+				.push({
+					id: jQuery.sap.uid(),
+					done: false,
+					text: todo
+				}));
+
+			this.store.set(this.model.getData());
+
+			this.model.updateBindings(true);
+		},
+
+		// Clear todo
+		clearTodo: function (todo) {
+			var todos = this.model.getProperty('/todos/');
+			for (var i = todos.length - 1; i >= 0; i--) {
+				if (todos[i].id === todo.getProperty('id')) {
+					todos.splice(i, 1);
+				}
+			}
+			this.model.setProperty('/todos/', todos);
+
+			this.store.set(this.model.getData());
+
+			this.model.updateBindings(true);
+		},
+
+		// Clear all completed todos
+		clearCompletedTodos: function () {
+			var todos = this.model.getProperty('/todos/');
+			for (var i = todos.length - 1; i >= 0; i--) {
+				if (todos[i].done === true) {
+					todos.splice(i, 1);
+				}
+			}
+			this.model.setProperty('/todos/', todos);
+
+			this.store.set(this.model.getData());
+
+			this.model.updateBindings(true);
+		},
+
+		// Complete / reopen all todos
+		toggleAll: function () {
+			var todos = this.model.getProperty('/todos/');
+			var hasOpenTodos = todos.some(function (element, index, array) {
+				return element.done === false;
+			});
+
+			todos.forEach(function (todo) {
+				todo.done = hasOpenTodos;
+			});
+
+			this.store.set(this.model.getData());
+
+			this.model.updateBindings(true);
+		},
+
+		// Complete / reopen a todo
+		todoToggled: function (todo) {
+			this.store.set(this.model.getData());
+
+			this.model.updateBindings(true);
+		},
+
+		// Rename a todo
+		todoRenamed: function (todo) {
+			var text = todo.getProperty('text').trim();
+			if (text.length === 0) {
+				this.clearTodo(todo);
+			} else {
+				todo.getModel().setProperty(todo.getPath() + '/text', text);
+
+				this.store.set(this.model.getData());
+
+				this.model.updateBindings(true);
+			}
+		},
+
+		// Change model filter based on selection
+		todosSelected: function (selectionMode) {
+			if (selectionMode === 'AllTodos') {
+				this.getView().changeSelection([]);
+			} else if (selectionMode === 'ActiveTodos') {
+				this.getView().changeSelection(
+					[new sap.ui.model.Filter('done',
+						sap.ui.model.FilterOperator.EQ, false)]);
+			} else if (selectionMode === 'CompletedTodos') {
+				this.getView().changeSelection(
+					[new sap.ui.model.Filter('done',
+						sap.ui.model.FilterOperator.EQ, true)]);
+			}
+		}
+
+	});
+})();

labs/architecture-examples/sapui5/js/todo/Todo.view.js

+/*global jQuery, sap, todo, $ */
+/*jshint unused:false */
+
+/*
+ * Does all UI-related things like creating controls, data binding configuration,
+ * setting up callbacks, etc. Does not perform any business logic.
+ */
+(function () {
+	'use strict';
+
+	jQuery.sap.require('todo.SmartTextField');
+	jQuery.sap.require('todo.formatters');
+
+	sap.ui.jsview('todo.Todo', {
+
+		getControllerName: function () {
+			return 'todo.Todo';
+		},
+
+		controls: [],
+
+		repeater: false,
+
+		createContent: function (oController) {
+			var toggleAll, newTodo, todosRepeater, completedDataTemplate, todoTemplate, todoCount,
+				todosSelection, clearCompleted, todosFooter;
+
+			// Toggle button to mark all todos as completed / open
+			toggleAll = new sap.ui.commons.CheckBox({
+				id: 'toggle-all',
+				checked: {
+					path: '/todos/',
+					formatter: todo.formatters.allCompletedTodosFormatter
+				},
+				visible: {
+					path: '/todos/',
+					formatter: todo.formatters.isArrayNonEmptyFormatter
+				}
+			}).attachChange(function () {
+				oController.toggleAll();
+			});
+			this.controls.push(toggleAll);
+
+			// Text field for entering a new todo
+			newTodo = new todo.SmartTextField('new-todo', {
+				placeholder: 'What needs to be done?',
+				// Don't autofocus in case of MSIE and Opera as both hide placeholder on focus
+				autofocus: !$.browser.msie && !$.browser.opera
+			}).attachChange(function () {
+				oController.createTodo(this.getProperty('value'));
+				this.setValue('');
+			}).addStyleClass('create-todo');
+
+			this.controls.push(newTodo);
+
+			// Row repeater that will hold our todos
+			todosRepeater = new sap.ui.commons.RowRepeater('todo-list', {
+				design: sap.ui.commons.RowRepeaterDesign.Transparent,
+				numberOfRows: 100
+			});
+			this.repeater = todosRepeater;
+
+			// Completed flag that is later bound to the done status of a todo
+			// We attach this to each text field and write it to the DOM as a data-*
+			// attribute; this way, we can refer to it in our stylesheet
+			completedDataTemplate = new sap.ui.core.CustomData({
+				key: 'completed',
+				value: {
+					path: 'done',
+					formatter: todo.formatters.booleanToStringFormatter
+				},
+				writeToDom: true
+			});
+
+			// A template used by the row repeater to render a todo
+			todoTemplate = new sap.ui.commons.layout.HorizontalLayout({
+				content: [new sap.ui.commons.CheckBox({
+					checked: '{done}'
+				}).attachChange(function () {
+					oController.todoToggled(this.getBindingContext());
+				}), new todo.SmartTextField({
+					value: '{text}',
+					strongediting: true
+				}).attachBrowserEvent('dblclick', function (e) {
+					$('.destroy').css('display', 'none');
+				}).attachChange(function () {
+					oController.todoRenamed(this.getBindingContext());
+				}).addStyleClass('todo').addCustomData(completedDataTemplate),
+				new sap.ui.commons.Button({
+					lite: true,
+					text: ''
+				}).addStyleClass('destroy').attachPress(function () {
+					oController.clearTodo(this.getBindingContext());
+				})]
+			});
+
+			// Helper function to rebind the aggregation with different filters
+			todosRepeater.rebindAggregation = function (filters) {
+				this.unbindRows();
+				this.bindRows('/todos/', todoTemplate, null, filters);
+			};
+
+			// Initially, we don't filter any todos
+			todosRepeater.rebindAggregation([]);
+
+			this.controls.push(todosRepeater);
+
+			// Counts open todos
+			todoCount = new sap.ui.commons.TextView('todo-count', {
+				text: {
+					path: '/todos/',
+					formatter: todo.formatters.openTodoCountFormatter
+				}
+			});
+
+			// Allows selecting what todos to show
+			todosSelection = new sap.ui.commons.SegmentedButton('filters', {
+
+				id: 'TodosSelection',
+				buttons: [new sap.ui.commons.Button({
+					id: 'AllTodos',
+					lite: true,
+					text: 'All'
+				}), new sap.ui.commons.Button({
+					id: 'ActiveTodos',
+					lite: true,
+					text: 'Active'
+				}), new sap.ui.commons.Button({
+					id: 'CompletedTodos',
+					lite: true,
+					text: 'Completed'
+				})]
+			}).attachSelect(function (e) {
+				oController.todosSelected(e.getParameters().selectedButtonId);
+			});
+			todosSelection.setSelectedButton('AllTodos');
+
+			// Button to clear all completed todos
+			clearCompleted = new sap.ui.commons.Button({
+				id: 'clear-completed',
+				lite: true,
+				text: {
+					path: '/todos/',
+					formatter: todo.formatters.completedTodoCountFormatter
+				},
+				visible: {
+					path: '/todos/',
+					formatter: todo.formatters.hasCompletedTodosFormatter
+				}
+			}).attachPress(function () {
+				oController.clearCompletedTodos();
+			});
+
+			todosFooter = new sap.ui.commons.layout.HorizontalLayout('footer', {
+				content: [todoCount, todosSelection, clearCompleted],
+				visible: {
+					path: '/todos/',
+					formatter: todo.formatters.isArrayNonEmptyFormatter
+				}
+			});
+
+			this.controls.push(todosFooter);
+
+			return this.controls;
+		},
+
+		changeSelection: function (filters) {
+			this.repeater.rebindAggregation(filters);
+		}
+
+	});
+})();

labs/architecture-examples/sapui5/js/todo/TodoPersistency.js

+/*global jQuery, todo */
+/*jshint unused:false */
+
+(function () {
+	'use strict';
+
+	jQuery.sap.declare('todo.TodoPersistency');
+
+	todo.TodoPersistency = function (aName) {
+		this.name = aName;
+	};
+
+	todo.TodoPersistency.prototype = function () {
+		var storage = window.localStorage;
+
+		return {
+			get: function () {
+				return JSON.parse(storage.getItem(this.name));
+			},
+			set: function (data) {
+				storage.setItem(this.name, JSON.stringify(data));
+				return this; // for method chaining
+			},
+			remove: function () {
+				storage.removeItem(this.name);
+				return this; // for method chaining
+			},
+			isEmpty: function () {
+				return !(this.get());
+			}
+		};
+	}();
+})();

labs/architecture-examples/sapui5/js/todo/formatters.js

+/*global jQuery, todo */
+/*jshint unused:false */
+
+/*
+ * Formatters used for data binding.
+ */
+(function () {
+	'use strict';
+
+	jQuery.sap.declare('todo.formatters');
+
+	todo.formatters = {
+			// Returns whether all todos are completed
+			allCompletedTodosFormatter: function (aTodos) {
+				return !(aTodos.some(function (element, index, array) {
+					return element.done === false;
+				}));
+			},
+
+			// Converts booleans to strings
+			booleanToStringFormatter: function (value) {
+				if (value === true) {
+					return 'true';
+				}
+				return 'false';
+			},
+
+			// Counts the number of closed todos
+			completedTodoCountFormatter: function (aTodos) {
+				var numberOfCompletedItems = 0;
+				aTodos.forEach(function (todo) {
+					if (todo.done === true) {
+						numberOfCompletedItems++;
+					}
+				});
+
+				return 'Clear completed (' + numberOfCompletedItems + ')';
+			},
+
+			// Returns whether a completed todo is available
+			hasCompletedTodosFormatter: function (aTodos) {
+				return aTodos.some(function (element, index, array) {
+					return element.done === true;
+				});
+			},
+
+			// Returns whether a an array has elements
+			isArrayNonEmptyFormatter: function (aTodos) {
+				return aTodos.length > 0;
+			},
+
+			// Counts the number of open todos
+			openTodoCountFormatter: function (aTodos) {
+				var numberOfOpenItems = 0;
+				aTodos.forEach(function (todo) {
+					if (todo.done === false) {
+						numberOfOpenItems++;
+					}
+				});
+
+				return numberOfOpenItems === 1 ? '1 item left' : numberOfOpenItems + ' items left';
+			}
+	};
+})();