test_custom_element_parts.html

mozilla-central/toolkit/content/tests/chrome/test_custom_element_parts.html

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Test Info: Warnings

This test gets skipped with pattern: os == 'android'
Manifest: toolkit/content/tests/chrome/chrome.toml

<!DOCTYPE HTML>

<html>

<head>

  <meta charset="utf-8">

  <title><!-- Shadow Parts issue with xul/xbl domparser --></title>

  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>

  <style>custom-button::part(foo) { background: red; }</style>

  <script>

    add_task(async function test() {

      // A simplified version of what MozXULElement.parseXULToFragment does

      let parser = new DOMParser();

      parser.forceEnableXULXBL();

      let doc = parser.parseFromString(`<box xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"><box part="foo">there</box></box>`, `application/xml`);

      let range = doc.createRange();

      range.selectNodeContents(doc.querySelector("box"));

      let frag = range.extractContents();

      customElements.define("custom-button", class extends HTMLElement {

        constructor() {

          super();

          this.attachShadow({mode: "open"});

          this.shadowRoot.appendChild(document.importNode(frag, true));

});

      let button = document.createElement("custom-button");

      document.body.appendChild(button);

      let box = button.shadowRoot.querySelector("box");

      // XXX: this fixes it

      // box.removeAttribute("part");

      // box.setAttribute("part", "foo");

      is(window.getComputedStyle(box).getPropertyValue("background-color"), "rgb(255, 0, 0)", "part applied");

});

  </script>

</head>

<body>

<p id="display"></p>

<div id="content" style="display: none"></div>

<pre id="test"></pre>

</body>

</html>