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<!doctype 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
-->
<script>WCT = { waitFor(cb) { addEventListener('DOMContentLoaded', cb) } };</script>
<script src="test-flags.js"></script>
<script src="../node_modules/wct-browser-legacy/browser.js"></script>
<script src="../node_modules/@webcomponents/webcomponents-platform/webcomponents-platform.js"></script>
<script src="../node_modules/es6-promise/dist/es6-promise.auto.min.js"></script>
<script src="../node_modules/@webcomponents/template/template.js"></script>
<script src="../node_modules/@webcomponents/html-imports/html-imports.min.js"></script>
<script src="../node_modules/@webcomponents/shadydom/shadydom.min.js"></script>
<script src="../node_modules/@webcomponents/custom-elements/custom-elements.min.js"></script>
<script src="../scoping-shim.min.js"></script>
<script src="../apply-shim.min.js"></script>
<script src="../custom-style-interface.min.js"></script>
<template id="eager-host">
<style>
:host {
display: block;
height: 100px;
background-color: blue;
}
:host > late-client {
--foo: rgb(255, 0, 0);
}
</style>
<late-client></late-client>
</template>
<template id="late-client">
<style>
:host {
display: block;
color: var(--foo);
}
div {
border: 2px solid rgb(0, 255, 0);
border-color: var(--foo);
}
</style>
<div>Hello!</div>
</template>
<template id="x-parent">
<style>
:host {
--property: 10px solid black;
}
</style>
<x-child></x-child>
</template>
<template id="x-child">
<style>
div {
border: var(--property);
}
</style>
<div></div>
</template>
<script>
class LateClient extends HTMLElement {
constructor() {
super();
this.initialized = false;
this.attachShadow({mode: 'open'});
}
init() {
if (this.initialized) {
return;
}
this.initialized = true;
const template = document.querySelector(`template#${this.localName}`);
if (!template.initialized) {
template.initialized = true;
window.ShadyCSS.prepareTemplate(template, this.localName);
}
this.shadowRoot.appendChild(template.content.cloneNode(true));
window.ShadyCSS.styleElement(this);
}
connectedCallback() {
if (this.initialized) {
window.ShadyCSS.styleElement(this);
}
}
}
class EagerHost extends HTMLElement {
constructor() {
super();
this.template = document.querySelector(`template#${this.localName}`);
if (!this.template.initialized) {
this.template.initialized = true;
window.ShadyCSS.prepareTemplate(this.template, this.localName);
}
}
connectedCallback() {
window.ShadyCSS.styleElement(this);
if (this.template && !this.shadowRoot) {
this.attachShadow({mode: 'open'});
this.shadowRoot.appendChild(this.template.content.cloneNode(true));
}
}
}
class StampBeforeStyle extends HTMLElement {
constructor() {
super();
this.template = document.querySelector(`template#${this.localName}`);
if (!this.template.initialized) {
this.template.initialized = true;
window.ShadyCSS.prepareTemplate(this.template, this.localName);
}
}
connectedCallback() {
if (this.template && !this.shadowRoot) {
this.attachShadow({ mode: 'open' });
this.shadowRoot.appendChild(this.template.content.cloneNode(true));
}
window.ShadyCSS.styleElement(this);
}
}
suite('Lazy Initialization', function() {
test('Late child element is eventually correct', function() {
customElements.define('late-client', class extends LateClient{});
customElements.define('eager-host', class extends EagerHost{});
const host = document.createElement('eager-host');
document.body.appendChild(host);
window.ShadyCSS.styleDocument();
const inner = host.shadowRoot.querySelector('late-client');
if (inner.init) {
inner.init();
}
const div = inner.shadowRoot.querySelector('div');
assert.equal(getComputedStyle(div).getPropertyValue('border-color').trim(), 'rgb(255, 0, 0)');
});
test('Custom Property Shim can force unprepared parent to evaluate', function() {
customElements.define('x-child', class extends StampBeforeStyle {});
customElements.define('x-parent', class extends StampBeforeStyle {});
const host = document.createElement('x-parent');
document.body.appendChild(host);
const inner = host.shadowRoot.querySelector('x-child');
const div = inner.shadowRoot.querySelector('div');
assert.equal(getComputedStyle(div).getPropertyValue('border-top-width').trim(), '10px');
});
});
</script>
|
