@polymer/polymer
Version:
The Polymer library makes it easy to create your own web components. Give your element some markup and properties, and then use it on a site. Polymer provides features like dynamic templates and data binding to reduce the amount of boilerplate you need to
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HTML
<!--
@license
Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<html>
<head>
<meta charset="utf-8">
<script src="../../../webcomponentsjs/webcomponents-lite.js"></script>
<script src="../../../web-component-tester/browser.js"></script>
<link rel="import" href="../../polymer.html">
</head>
<body>
<script>
window.clearTestLists = function() {
window.actualAttachedList = [];
window.actualReadyList = [];
window.actualReadyBeforeAttachedList = [];
};
window.clearTestLists();
window.readyMixin = function(base) {
return class readyMixin extends base {
static get properties() {
return {
prop: {
value: true,
observer: '_propChanged'
}
};
}
_propChanged() {
this.observerShadowRoot = Boolean(this.shadowRoot);
}
ready() {
super.ready();
this._readied = true;
this.readyList = window.actualReadyList.slice();
this.readyShadowRoot = Boolean(this.shadowRoot);
window.actualReadyList.push(this);
}
connectedCallback() {
this._eventList = [];
this.addEventListener('e', (e) => {
this._eventList.push(e.composedPath()[0]);
});
super.connectedCallback();
this.dispatchEvent(new Event('e', {composed: true, bubbles: true}));
this.attachedShadowRoot = Boolean(this.shadowRoot);
this.attachedTime$Keys = Object.keys(this.$);
this.attachedList = window.actualAttachedList.slice();
window.actualAttachedList.push(this);
if (!this._readied) {
window.actualReadyBeforeAttachedList.push(this);
}
}
};
};
</script>
<dom-module id="x-zot">
<template>
x-zot<slot></slot>
</template>
<script>
HTMLImports.whenReady(function() {
class El extends window.readyMixin(Polymer.Element) {
static get is() { return 'x-zot'; }
}
customElements.define(El.is, El);
});
</script>
</dom-module>
<dom-module id="x-bar">
<template>
<x-zot id="zot"></x-zot>
</template>
<script>
HTMLImports.whenReady(function() {
class El extends window.readyMixin(Polymer.Element) {
static get is() { return 'x-bar'; }
}
customElements.define(El.is, El);
});
</script>
</dom-module>
<dom-module id="x-foo">
<template>
<x-bar id="bar1"></x-bar>
<x-bar id="bar2"></x-bar>
</template>
<script>
HTMLImports.whenReady(function() {
class El extends window.readyMixin(Polymer.Element) {
static get is() { return 'x-foo'; }
}
customElements.define(El.is, El);
});
</script>
</dom-module>
<dom-module id="x-ready">
<template>
<x-zot id="a">
<x-zot id="b"></x-zot>
<x-zot id="c">
<x-zot id="d"></x-zot>
</x-zot>
</x-zot>
<x-foo id="foo"></x-foo>
</template>
<script>
HTMLImports.whenReady(function() {
class El extends window.readyMixin(Polymer.Element) {
static get is() { return 'x-ready'; }
static get properties() {
return {
foo: {
observer: '_fooChanged'
}
};
}
_fooChanged() {}
}
customElements.define(El.is, El);
});
</script>
</dom-module>
<dom-module id="x-templatized">
<template>
<template is="dom-if" if>
<x-ready foo="[[foo]]"></x-ready>
</template>
</template>
<script>
HTMLImports.whenReady(function() {
class El extends Polymer.Element {
static get is() { return 'x-templatized'; }
static get properties() {
return {
foo: {
value: 'foo'
}
};
}
}
customElements.define(El.is, El);
});
</script>
</dom-module>
<script>
suite('ready and attached ordering', function() {
let el;
setup(function() {
window.clearTestLists();
el = document.createElement('x-ready');
document.body.appendChild(el);
});
teardown(function() {
document.body.removeChild(el);
});
test('element dom ready before element', function() {
assert.includeMembers(el.readyList, [el.$.a, el.$.b, el.$.c, el.$.d, el.$.foo]);
var foo = el.$.foo;
assert.includeMembers(foo.readyList, [foo.$.bar1, foo.$.bar1.$.zot, foo.$.bar2, foo.$.bar2.$.zot]);
var b1 = foo.$.bar1, b2 = foo.$.bar2;
assert.includeMembers(b1.readyList, [b1.$.zot]);
assert.includeMembers(b2.readyList, [b2.$.zot]);
});
test('can listen to events fired by element dom in connected', function() {
assert.includeMembers(el._eventList, [el.$.a, el.$.b, el.$.c, el.$.d, el.$.foo]);
var foo = el.$.foo;
assert.includeMembers(foo._eventList, [foo.$.bar1, foo.$.bar2]);
var b1 = foo.$.bar1, b2 = foo.$.bar2;
assert.includeMembers(b1._eventList, [b1.$.zot]);
assert.includeMembers(b2._eventList, [b2.$.zot]);
});
test('shadowRoot available in ready, connected, observer', function() {
[el, el.$.a, el.$.b, el.$.c, el.$.d, el.$.foo,
el.$.foo.$.bar1, el.$.foo.$.bar1.$.zot,
el.$.foo.$.bar2, el.$.foo.$.bar2.$.zot].forEach((e) => {
assert.isTrue(e.observerShadowRoot);
assert.isTrue(e.readyShadowRoot);
assert.isTrue(e.attachedShadowRoot);
});
});
test('element attached called after ready', function() {
assert.equal(window.actualReadyBeforeAttachedList.length, 0);
});
test('element has $ references at attached time', function() {
assert.sameMembers(el.attachedTime$Keys, ['a', 'b', 'c', 'd', 'foo']);
assert.sameMembers(el.$.foo.attachedTime$Keys, ['bar1', 'bar2']);
});
});
suite('templatized: ready and attached ordering', function() {
let container, el;
setup(function() {
window.clearTestLists();
container = document.createElement('x-templatized');
document.body.appendChild(container);
Polymer.flush();
el = container.shadowRoot.querySelector('x-ready');
});
teardown(function() {
document.body.removeChild(container);
});
test('element dom ready before element', function() {
assert.includeMembers(el.readyList, [el.$.a, el.$.b, el.$.c, el.$.d, el.$.foo]);
var foo = el.$.foo;
assert.includeMembers(foo.readyList, [foo.$.bar1, foo.$.bar1.$.zot, foo.$.bar2, foo.$.bar2.$.zot]);
var b1 = foo.$.bar1, b2 = foo.$.bar2;
assert.includeMembers(b1.readyList, [b1.$.zot]);
assert.includeMembers(b2.readyList, [b2.$.zot]);
});
test('can listen to events fired by element dom in connected', function() {
assert.includeMembers(el._eventList, [el.$.a, el.$.b, el.$.c, el.$.d, el.$.foo]);
var foo = el.$.foo;
assert.includeMembers(foo._eventList, [foo.$.bar1, foo.$.bar2]);
var b1 = foo.$.bar1, b2 = foo.$.bar2;
assert.includeMembers(b1._eventList, [b1.$.zot]);
assert.includeMembers(b2._eventList, [b2.$.zot]);
});
test('shadowRoot available in ready, connected, observer', function() {
[el, el.$.a, el.$.b, el.$.c, el.$.d, el.$.foo,
el.$.foo.$.bar1, el.$.foo.$.bar1.$.zot,
el.$.foo.$.bar2, el.$.foo.$.bar2.$.zot].forEach((e) => {
assert.isTrue(e.observerShadowRoot);
assert.isTrue(e.readyShadowRoot);
assert.isTrue(e.attachedShadowRoot);
});
});
test('element attached called after ready', function() {
assert.equal(window.actualReadyBeforeAttachedList.length, 0);
});
test('element has $ references at attached time', function() {
assert.sameMembers(el.attachedTime$Keys, ['a', 'b', 'c', 'd', 'foo']);
assert.sameMembers(el.$.foo.attachedTime$Keys, ['bar1', 'bar2']);
});
});
</script>
</body>
</html>