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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Draggable, droppable, and sortable list (2.0)</title>
<script type='text/javascript' src='../ext/jquery-1.9.1.js'></script>
<script type="text/javascript" src="../ext/jquery-ui.js"></script>
<script type='text/javascript' src="../ext/knockout-3.4.0.js"></script>
<script type='text/javascript' src="../build/knockout-sortable.js"></script>
<style type='text/css'>
body {
font-family: arial;
}
h3 {
text-align: center;
font-weight: bold;
}
div {
padding: 5px;
margin: 5px;
border: black 1px solid;
}
p, a {
font-size: .8em;
}
ul {
padding-bottom: 10px;
}
.ko_container {
width: 125px;
min-height: 50px;
background-color: #AAA;
}
.high {
background-color: red;
}
.trash {
background-color: #000;
}
.item {
background-color: #DDD;
cursor: move;
text-align: center;
}
.item input {
width: 100px;
}
#main {
float: left;
width: 150px;
margin-top: 0px;
}
#results {
margin-left: 175px;
width: 150px;
}
</style>
</head>
<body>
<div id="main">
<h3>Tasks</h3>
<div class="container" data-bind="sortable: { data: tasks }">
<!-- leading comment -->
<div class="item">
<span data-bind="visible: !$root.isTaskSelected($data)">
<a href="#" data-bind="text: name, click: $root.selectedTask"></a>
</span>
<span data-bind="visibleAndSelect: $root.isTaskSelected($data)">
<input data-bind="value: name, event: { blur: $root.clearTask }" />
</span>
</div>
<!-- trailing comment -->
</div>
<a href="#" data-bind="click: addTask">Add Task</a>
</div>
<div id="results">
<h3>Tasks</h3>
<ul data-bind="foreach: tasks">
<li data-bind="text: name"></li>
</ul>
</div>
<script type='text/javascript'>
var Task = function(name) {
this.name = ko.observable(name);
};
var ViewModel = function() {
var self = this;
self.tasks = ko.observableArray(null);
self.selectedTask = ko.observable();
self.clearTask = function(data, event) {
if (data === self.selectedTask()) {
self.selectedTask(null);
}
if (data.name() === "") {
self.tasks.remove(data);
}
};
self.addTask = function() {
var task = new Task("new");
self.selectedTask(task);
self.tasks.push(task);
};
self.isTaskSelected = function(task) {
return task === self.selectedTask();
};
};
//control visibility, give element focus, and select the contents (in order)
ko.bindingHandlers.visibleAndSelect = {
update: function(element, valueAccessor) {
ko.bindingHandlers.visible.update(element, valueAccessor);
if (valueAccessor()) {
setTimeout(function() {
$(element).find("input").focus().select();
}, 0); //new tasks are not in DOM yet
}
}
};
ko.applyBindings(new ViewModel());
</script>
</body>
</html>
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