javascript toolbar example

html code:

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>js dev test</title>
<link href="css/style.css" rel="stylesheet">
<script src="js/script.js"></script>
 
</head>
 
<body>
 
	<div id="myToolbar" class="toolbar">
		<span class="toolbar-item">0</span>
		<span class="toolbar-item">1</span>
		<span class="toolbar-item">2</span>
		<span class="toolbar-item">3</span>
	</div>
 
</body>
</html>

css code:

.toolbar {
	background-color: #ccc;
	height: 50px;
	padding: 5px;
	margin: 5px;
}
 
.toolbar-item {
	display: inline-block;
	height: 50px;
	width: 50px;
	background-color: #00f;
	margin: 5px;
}
 
.active {
	background-color: #ff0;
}
 
.disabled {
	background-color: #555;
}

js code:

var oojs = (function (oojs) {
 
	var createToolbarItem = function (itemElement) {
 
		var item = {
			toggleActiveState: function () {
				this.activated = !this.activated;
			}
		};
 
		Object.defineProperties(item, {
			el: {
				value: itemElement
			},
			enabled: {
				get: function () {
					return !this.el.classList.contains('disabled');
				},
				set: function (value) {
					if (value) {
						this.el.classList.remove('disabled');
					} else {
						this.el.classList.add('disabled');
					}
				}
			},
			activated: {
				get: function () {
					return this.el.classList.contains('active');
				},
				set: function (value) {
					if (value) {
						this.el.classList.add('active');
					} else {
						this.el.classList.remove('active');
					}
				}
			}
 
		});
 
		return item;
	};
 
	var createToolbarItems = function (itemElements) {
		var items = [];
 
		[].forEach.call( itemElements, function( el, index, array ) {
			var item = createToolbarItem(el);
			items.push(item);
		});
		return items;
	};
 
	oojs.createToolbar = function (elementId) {
		var element = document.getElementById(elementId);
 
		if (!element) {
			element = document.createElement('div');
			element.id = elementId;
			element.className = 'toolbar';
		}
 
		var items = element.querySelectorAll('.toolbar-item');
 
		var toolbar = {
			add: function (options) {
				var span = document.createElement('span');
				span.className = 'toolbar-item';
				this.el.appendChild(span);
				var item = createToolbarItem(span);
				this.items.push(item);
			},
			remove: function(index) {
				var len = this.items.length;
				if(index > len || index < 0) {
					throw new Error('Index is out ');
				}
				var item = this.items[index];
				this.items.splice(index, 1);
				this.el.removeChild(item.el);
				item = null;
			},
			appendTo: function (parentElement) {
				parentElement.appendChild(this.el);
			}
		};
 
		Object.defineProperties(toolbar, {
			el: {
				value: element
			},
			items: {
				value: createToolbarItems(items),
				enumerable: true
			}
		});
 
		return toolbar;
	};
 
	return oojs;
}(oojs || {}));
 
 
/*
var toolbar = oojs.createToolbar('myToolbar');
toolbar.items[0].enabled = false;
toolbar.items[0].enabled = true;
toolbar.items[1].activated = true;
toolbar.items[1].activated = false;
toolbar.items[2].toggleActiveState();
toolbar.add();
toolbar.remove(2);
 
var toolbar2 = oojs.createToolbar('myToolbar2');
toolbar2.appendTo(document.body);
toolbar2.add();
*/

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