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Test Info:
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
"use strict";
// Tests that the overflow badge is shown to overflow causing elements and is updated
// dynamically.
const TEST_URI = `
<style type="text/css">
.parent {
width: 200px;
height: 200px;
overflow: scroll;
}
.fixed {
width: 50px;
height: 50px;
}
.shift {
margin-left: 300px;
}
</style>
<div id="top" class="parent">
<div id="child1" class="fixed shift">
<div id="child2" class="fixed"></div>
</div>
<div id="child3" class="shift">
<div id="child4" class="fixed"></div>
</div>
</div>
`;
add_task(async function () {
const { inspector } = await openInspectorForURL(
"data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI)
);
await expandChildContainers(inspector);
const child1 = await getContainerForSelector("#child1", inspector);
const child2 = await getContainerForSelector("#child2", inspector);
const child3 = await getContainerForSelector("#child3", inspector);
const child4 = await getContainerForSelector("#child4", inspector);
info(
"Checking if overflow badges appear correctly right after the markup-view is loaded"
);
checkBadges([child1, child4], [child2, child3]);
info("Changing the elements to check whether the badge updates correctly");
await toggleClass(inspector);
checkBadges([child2, child3], [child1, child4]);
info(
"Once again, changing the elements to check whether the badge updates correctly"
);
await toggleClass(inspector);
checkBadges([child1, child4], [child2, child3]);
});
async function expandChildContainers(inspector) {
const container = await getContainerForSelector("#top", inspector);
await expandContainer(inspector, container);
for (const child of container.getChildContainers()) {
await expandContainer(inspector, child);
}
}
async function toggleClass(inspector) {
const onStateChanged = inspector.walker.once("overflow-change");
await SpecialPowers.spawn(gBrowser.selectedBrowser, [], async function () {
content.document.querySelector("#child1").classList.toggle("fixed");
content.document.querySelector("#child3").classList.toggle("fixed");
});
await onStateChanged;
}
function checkBadges(elemsWithBadges, elemsWithNoBadges) {
const hasBadge = elem =>
elem.elt.querySelector(
`#${elem.elt.children[0].id} > span.editor > .inspector-badge.overflow-badge`
);
for (const elem of elemsWithBadges) {
ok(hasBadge(elem), `Overflow badge exists in ${elem.node.id}`);
}
for (const elem of elemsWithNoBadges) {
ok(!hasBadge(elem), `Overflow badge does not exist in ${elem.node.id}`);
}
}