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function removeWhiteSpaceOnlyTextNodes(node) {
for (var i = 0; i < node.childNodes.length; i++) {
var child = node.childNodes[i];
if (child.nodeType === Node.TEXT_NODE &&
child.nodeValue.trim().length == 0) {
node.removeChild(child);
i--;
} else if (
child.nodeType === Node.ELEMENT_NODE ||
child.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {
removeWhiteSpaceOnlyTextNodes(child);
}
}
if (node.shadowRoot) {
removeWhiteSpaceOnlyTextNodes(node.shadowRoot);
}
}
function convertTemplatesToShadowRootsWithin(node) {
var nodes = node.querySelectorAll('template');
for (var i = 0; i < nodes.length; ++i) {
var template = nodes[i];
var mode = template.getAttribute('data-mode');
var delegatesFocus = template.hasAttribute('data-delegatesFocus');
var parent = template.parentNode;
parent.removeChild(template);
var shadowRoot;
if (!mode) {
shadowRoot = parent.attachShadow({ mode: 'open' });
} else {
shadowRoot =
parent.attachShadow({ 'mode': mode, 'delegatesFocus': delegatesFocus });
}
var expose = template.getAttribute('data-expose-as');
if (expose)
window[expose] = shadowRoot;
if (template.id)
shadowRoot.id = template.id;
var fragments = document.importNode(template.content, true);
shadowRoot.appendChild(fragments);
convertTemplatesToShadowRootsWithin(shadowRoot);
}
}
function convertDeclarativeTemplatesToShadowRootsWithin(root) {
root.querySelectorAll("template[shadowroot]").forEach(template => {
const mode = template.getAttribute("shadowroot");
const shadowRoot = template.parentNode.attachShadow({ mode });
shadowRoot.appendChild(template.content);
template.remove();
convertDeclarativeTemplatesToShadowRootsWithin(shadowRoot);
});
}
function isShadowHost(node) {
return node && node.nodeType == Node.ELEMENT_NODE && node.shadowRoot;
}
function isIFrameElement(element) {
return element && element.nodeName == 'IFRAME';
}
// Returns node from shadow/iframe tree "path".
function getNodeInComposedTree(path) {
var ids = path.split('/');
var node = document.getElementById(ids[0]);
for (var i = 1; node != null && i < ids.length; ++i) {
if (isIFrameElement(node))
node = node.contentDocument.getElementById(ids[i]);
else if (isShadowHost(node))
node = node.shadowRoot.getElementById(ids[i]);
else
return null;
}
return node;
}
function createTestTree(node) {
let ids = {};
function attachShadowFromTemplate(template) {
let parent = template.parentNode;
parent.removeChild(template);
let shadowRoot;
if (template.getAttribute('data-slot-assignment') === 'manual') {
shadowRoot =
parent.attachShadow({
mode: template.getAttribute('data-mode'),
slotAssignment: 'manual'
});
} else {
shadowRoot =
parent.attachShadow({ mode: template.getAttribute('data-mode') });
}
let id = template.id;
if (id) {
shadowRoot.id = id;
ids[id] = shadowRoot;
}
shadowRoot.appendChild(document.importNode(template.content, true));
return shadowRoot;
}
function walk(root) {
if (root.id) {
ids[root.id] = root;
}
for (let e of Array.from(root.querySelectorAll('[id]'))) {
ids[e.id] = e;
}
for (let e of Array.from(root.querySelectorAll('template'))) {
walk(attachShadowFromTemplate(e));
}
}
walk(node.cloneNode(true));
return ids;
}
function dispatchEventWithLog(nodes, target, event) {
function labelFor(e) {
return e.id || e.tagName;
}
let log = [];
let attachedNodes = [];
for (let label in nodes) {
let startingNode = nodes[label];
for (let node = startingNode; node; node = node.parentNode) {
if (attachedNodes.indexOf(node) >= 0)
continue;
let id = node.id;
if (!id)
continue;
attachedNodes.push(node);
node.addEventListener(event.type, (e) => {
// Record [currentTarget, target, relatedTarget, composedPath()]
log.push([
id, labelFor(e.target),
e.relatedTarget ? labelFor(e.relatedTarget) : null,
e.composedPath().map((n) => {
return labelFor(n);
})
]);
});
}
}
target.dispatchEvent(event);
return log;
}
// This function assumes that testharness.js is available.
function assert_event_path_equals(actual, expected) {
assert_equals(actual.length, expected.length);
for (let i = 0; i < actual.length; ++i) {
assert_equals(
actual[i][0], expected[i][0],
'currentTarget at ' + i + ' should be same');
assert_equals(
actual[i][1], expected[i][1], 'target at ' + i + ' should be same');
assert_equals(
actual[i][2], expected[i][2],
'relatedTarget at ' + i + ' should be same');
assert_array_equals(
actual[i][3], expected[i][3],
'composedPath at ' + i + ' should be same');
}
}
function assert_background_color(path, color) {
assert_equals(
window.getComputedStyle(getNodeInComposedTree(path)).backgroundColor,
color, 'backgroundColor for ' + path + ' should be ' + color);
}
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