todomvc
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> Helping you select an MV\* framework
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HTML
<html>
<head>
<title>polymer-selector-multi</title>
<script src="../../../platform/platform.js"></script>
<script src="../../../tools/test/htmltest.js"></script>
<script src="../../../tools/test/chai/chai.js"></script>
<link rel="import" href="../../polymer-selector.html">
<style>
.polymer-selected {
background: #ccc;
}
</style>
</head>
<body>
<polymer-selector id="selector" multi>
<div>Item 1</div>
<div>Item 2</div>
<div>Item 3</div>
<div>Item 4</div>
<div>Item 5</div>
</polymer-selector>
<script>
var assert = chai.assert;
function oneMutation(node, options, cb) {
var o = new MutationObserver(function() {
cb();
o.disconnect();
});
o.observe(node, options);
}
document.addEventListener('polymer-ready', function() {
//
var s = document.querySelector('#selector');
assert.equal(s.selected, null);
assert.equal(s.selectedClass, 'polymer-selected');
assert.isTrue(s.multi);
assert.equal(s.valueattr, 'name');
assert.equal(s.items.length, 5);
// setup listener for polymer-select event
var selectEventCounter = 0;
s.addEventListener('polymer-select', function(e) {
if (e.detail.isSelected) {
selectEventCounter++;
} else {
selectEventCounter--;
}
// check selectedItem in polymer-select event
assert.equal(this.selectedItem.length, selectEventCounter);
});
// set selected
s.selected = [0, 2];
Platform.flush();
oneMutation(s, {attributes: true}, function() {
// check polymer-select event
assert.equal(selectEventCounter, 2);
// check selected class
assert.isTrue(s.children[0].classList.contains('polymer-selected'));
assert.isTrue(s.children[2].classList.contains('polymer-selected'));
// check selectedItem
assert.equal(s.selectedItem.length, 2);
assert.equal(s.selectedItem[0], s.children[0]);
assert.equal(s.selectedItem[1], s.children[2]);
// tap on already selected element should unselect it
s.children[0].dispatchEvent(new CustomEvent('tap', {bubbles: true}));
// check selected
assert.equal(s.selected.length, 1);
assert.isFalse(s.children[0].classList.contains('polymer-selected'));
done();
});
});
</script>
</body>
</html>