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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
// Test drag and dropping a node before a ::marker pseudo.
const TEST_URL = URL_ROOT + "doc_markup_dragdrop.html";
add_task(async function () {
const { inspector } = await openInspectorForURL(TEST_URL);
info("Expand #list node");
const parentFront = await getNodeFront("#list", inspector);
await inspector.markup.expandNode(parentFront.parentNode());
await inspector.markup.expandNode(parentFront);
await waitForMultipleChildrenUpdates(inspector);
info("Scroll #list into view");
const parentContainer = await getContainerForNodeFront(
parentFront,
inspector
);
parentContainer.elt.scrollIntoView(true);
info("Test placing an element before a ::marker psuedo");
await moveElementBeforeMarker("#last-list-child", parentFront, inspector);
const childNodes = await getChildrenOf(parentFront, inspector);
is(
childNodes[0],
"_moz_generated_content_marker",
"::marker is still the first child of #list"
);
is(
childNodes[1],
"last-list-child",
"#last-list-child is now the second child of #list"
);
is(
childNodes[2],
"first-list-child",
"#first-list-child is now the last child of #list"
);
});
async function moveElementBeforeMarker(selector, parentFront, inspector) {
info(`Placing ${selector} before its parent's ::marker`);
const container = await getContainerForSelector(selector, inspector);
const parentContainer = await getContainerForNodeFront(
parentFront,
inspector
);
const offsetY =
parentContainer.tagLine.offsetTop +
parentContainer.tagLine.offsetHeight -
container.tagLine.offsetTop;
const onMutated = inspector.once("markupmutation");
const uiUpdate = inspector.once("inspector-updated");
await simulateNodeDragAndDrop(inspector, selector, 0, offsetY);
const mutations = await onMutated;
await uiUpdate;
is(mutations.length, 2, "2 mutations were received");
}
async function getChildrenOf(parentFront, { walker }) {
const { nodes } = await walker.children(parentFront);
return nodes.map(node => {
if (node.isMarkerPseudoElement) {
return node.displayName;
}
return node.id;
});
}