Update to VS Code 1.52.1

lib/vscode/src/vs/base/browser/dom.ts

@@ -661,6 +661,48 @@ export function isAncestor(testChild: Node | null, testAncestor: Node | null): b
 	return false;
 }
 
+const parentFlowToDataKey = 'parentFlowToElementId';
+
+/**
+ * Set an explicit parent to use for nodes that are not part of the
+ * regular dom structure.
+ */
+export function setParentFlowTo(fromChildElement: HTMLElement, toParentElement: Element): void {
+	fromChildElement.dataset[parentFlowToDataKey] = toParentElement.id;
+}
+
+function getParentFlowToElement(node: HTMLElement): HTMLElement | null {
+	const flowToParentId = node.dataset[parentFlowToDataKey];
+	if (typeof flowToParentId === 'string') {
+		return document.getElementById(flowToParentId);
+	}
+	return null;
+}
+
+/**
+ * Check if `testAncestor` is an ancessor of `testChild`, observing the explicit
+ * parents set by `setParentFlowTo`.
+ */
+export function isAncestorUsingFlowTo(testChild: Node, testAncestor: Node): boolean {
+	let node: Node | null = testChild;
+	while (node) {
+		if (node === testAncestor) {
+			return true;
+		}
+
+		if (node instanceof HTMLElement) {
+			const flowToParentElement = getParentFlowToElement(node);
+			if (flowToParentElement) {
+				node = flowToParentElement;
+				continue;
+			}
+		}
+		node = node.parentNode;
+	}
+
+	return false;
+}
+
 export function findParentWithClass(node: HTMLElement, clazz: string, stopAtClazzOrNode?: string | HTMLElement): HTMLElement | null {
 	while (node && node.nodeType === node.ELEMENT_NODE) {
 		if (node.classList.contains(clazz)) {
@@ -1331,8 +1373,8 @@ export function safeInnerHtml(node: HTMLElement, value: string): void {
 	const options = _extInsaneOptions({
 		allowedTags: ['a', 'button', 'blockquote', 'code', 'div', 'h1', 'h2', 'h3', 'input', 'label', 'li', 'p', 'pre', 'select', 'small', 'span', 'strong', 'textarea', 'ul', 'ol'],
 		allowedAttributes: {
-			'a': ['href'],
-			'button': ['data-href'],
+			'a': ['href', 'x-dispatch'],
+			'button': ['data-href', 'x-dispatch'],
 			'input': ['type', 'placeholder', 'checked', 'required'],
 			'label': ['for'],
 			'select': ['required'],