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Test Info: Warnings
- This test gets skipped with pattern: os == 'android'
- Manifest: toolkit/content/tests/widgets/chrome.toml
<!DOCTYPE HTML>
<!-- Any copyright is dedicated to the Public Domain.
<html>
<head>
<title>Test Panel List Min-width From Anchor</title>
<script type="text/javascript" src="head.js"></script>
<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css" />
</head>
<body>
<p id="display"></p>
<div id="content">
<button id="anchor-button">This is a button with a long string to act as a wide anchor.</button>
<panel-list id="panel-list">
<panel-item>one</panel-item>
<panel-item>two</panel-item>
<panel-item>three</panel-item>
<panel-item>four</panel-item>
<panel-item>five</panel-item>
<panel-item>six</panel-item>
</panel-list>
</div>
<pre id="test">
<script class="testbody" type="application/javascript">
const {BrowserTestUtils} = ChromeUtils.importESModule("resource://testing-common/BrowserTestUtils.sys.mjs");
let anchorButton, panelList;
add_setup(function setup() {
panelList = document.getElementById("panel-list");
anchorButton = document.getElementById("anchor-button");
anchorButton.addEventListener("click", e => panelList.toggle(e));
});
add_task(async function minWidthFromAnchor() {
let anchorWidth = anchorButton.getBoundingClientRect().width;
let shown = BrowserTestUtils.waitForEvent(panelList, "shown");
synthesizeMouseAtCenter(anchorButton, {});
await shown;
let panelWidth = panelList.getBoundingClientRect().width;
isnot(anchorWidth, panelWidth, "Without min-width-from-anchor, panel should not have anchor width.");
let hidden = BrowserTestUtils.waitForEvent(panelList, "hidden");
synthesizeKey("Escape", {});
await hidden;
panelList.toggleAttribute("min-width-from-anchor", true);
shown = BrowserTestUtils.waitForEvent(panelList, "shown");
synthesizeMouseAtCenter(anchorButton, {});
await shown;
panelWidth = panelList.getBoundingClientRect().width;
is(anchorWidth, panelWidth, "With min-width-from-anchor, panel should have anchor width.");
hidden = BrowserTestUtils.waitForEvent(panelList, "hidden");
synthesizeKey("Escape", {});
await hidden;
});
</script>
</pre>
</body>
</html>