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<!doctype html>
<html>
<head>
<title>Tree related Role Verification Tests</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/wai-aria/scripts/aria-utils.js"></script>
</head>
<style>
/* Hide collapsed rows */
[role="treegrid"] tr.hidden {
display: none;
}
/* Indents */
[role="treegrid"] tr[aria-level="2"] > td:first-child {
padding-left: 2ch;
}
[role="treegrid"] tr[aria-level="3"] > td:first-child {
padding-left: 4ch;
}
/* Collapse/expand icons */
[role="treegrid"] tr > td:first-child::before {
content: "";
display: inline-block;
width: 2ch;
height: 11px;
transition: transform 0.3s;
transform-origin: 5px 5px;
}
[role="treegrid"] tr[aria-expanded] > td:first-child::before,
[role="treegrid"] td[aria-expanded]:first-child::before {
cursor: pointer;
background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12'%3E%3Cpolygon fill='black' points='2,0 2,10 10,5'%3E%3C/polygon%3E%3C/svg%3E%0A");
background-repeat: no-repeat;
}
[role="treegrid"] tr[aria-expanded="true"] > td:first-child::before,
[role="treegrid"] td[aria-expanded="true"]:first-child::before {
transform: rotate(90deg);
}
</style>
<body>
<p>Tests <a href="https://w3c.github.io/aria/#tree">tree</a> and related roles.</p>
<ul role="tree" data-testname="role is tree" data-expectedrole="tree" class="ex">
<li role="treeitem" data-testname="role is treeitem (in tree)" data-expectedrole="treeitem" class="ex">
x
<ul role="group" data-testname="role is group (in treeitem)" data-expectedrole="group" class="ex">
<li role="treeitem" data-testname="role is treeitem (in group, in treeitem)" data-expectedrole="treeitem" class="ex">x</li>
<li role="treeitem">x</li>
</ul>
</li>
<li role="treeitem">x</li>
</ul>
<table role="treegrid" data-testname="role is treegrid" data-expectedrole="treegrid" class="ex">
<tbody>
<tr role="row" aria-expanded="true" aria-level="1" aria-posinset="1" aria-setsize="2" data-testname="role is row (in treegrid)" data-expectedrole="row" class="ex expander">
<td role="gridcell" data-testname="role is gridcell (in row, in treegrid)" data-expectedrole="gridcell" class="ex">x</td>
<td role="gridcell">x</td>
<td role="gridcell">x</td>
</tr>
<tr role="row" aria-level="2" aria-posinset="1" aria-setsize="2">
<td role="gridcell">x</td>
<td role="gridcell">x</td>
<td role="gridcell">x</td>
</tr>
<tr aria-expanded="false" aria-level="2" aria-posinset="2" aria-setsize="2" role="row" class="expander">
<td role="gridcell">x</td>
<td role="gridcell">x</td>
<td role="gridcell">x</td>
</tr>
<tr role="row" aria-level="3" aria-posinset="1" aria-setsize="1" class="hidden">
<td role="gridcell">x</td>
<td role="gridcell">x</td>
<td role="gridcell">x</td>
</tr>
<tr role="row" aria-expanded="false" aria-level="1" aria-posinset="2" aria-setsize="2" class="expander">
<td role="gridcell">x</td>
<td role="gridcell">x</td>
<td role="gridcell">x</td>
</tr>
<tr role="row" aria-level="2" aria-posinset="1" aria-setsize="2" class="hidden">
<td role="gridcell">x</td>
<td role="gridcell">x</td>
<td role="gridcell">x</td>
</tr>
<tr role="row" aria-level="2" aria-posinset="1" aria-setsize="2" class="hidden">
<td role="gridcell">x</td>
<td role="gridcell">x</td>
<td role="gridcell">x</td>
</tr>
</tbody>
</table>
<nav role="treeitem" data-testname="orphaned treeitem outside the context of tree" data-expectedrole="navigation" class="ex">x</nav>
<button role="treeitem" data-testname="orphaned button with treeitem role outside tree context" data-expectedrole="button" class="ex">x</button>
<script>
AriaUtils.verifyRolesBySelector(".ex");
const expanders = document.querySelectorAll(".expander");
expanders.forEach((expander) => {
expander.addEventListener("click", () => {
const expanderLevel = parseInt(expander.getAttribute("aria-level"))
let nextSibling = expander.nextElementSibling;
// Toggle aria-expanded for the row being expanded
let isExpanding = expander.getAttribute("aria-expanded") !== "true";
expander.setAttribute("aria-expanded", isExpanding.toString());
while (nextSibling) {
const nextSiblingLevel = parseInt(nextSibling.getAttribute("aria-level"));
// Don't expand rows found on the same level
if (nextSiblingLevel === expanderLevel) nextSibling = null;
if (isExpanding) {
// Don't expand rows beyond the next level if an ".expander" row is found as the nextSibling
if (nextSiblingLevel - expanderLevel === 1) {
nextSibling.classList.remove("hidden");
// Don't expand sub rows found
if (nextSibling.hasAttribute("aria-expanded")) nextSibling.setAttribute("aria-expanded", "false");
}
} else {
// Only expand rows that are more "indented" than the ".expander" row. A higher aria-level indicates a
// higher "level"
if (nextSiblingLevel > expanderLevel) {
nextSibling.classList.add("hidden");
}
}
nextSibling = nextSibling.nextElementSibling;
}
});
});
</script>
</body>
</html>
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