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Extract getParentFlowToElement

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This commit is contained in:
Matt Bierner
2020-11-10 17:50:01 -08:00
parent c8877809c9
commit f23e47b9a2
1 changed files with 12 additions and 7 deletions
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19
src/vs/base/browser/dom.ts
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@@ -671,6 +671,14 @@ export function setParentFlowTo(fromChildElement: HTMLElement, toParentElement:
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`.
@@ -683,13 +691,10 @@ export function isAncestorUsingFlowTo(testChild: Node, testAncestor: Node): bool
}
if (node instanceof HTMLElement) {
const flowToParentId = node.dataset[parentFlowToDataKey];
if (typeof flowToParentId === 'string') {
const flowToParentElement = document.getElementById(flowToParentId);
if (flowToParentElement) {
node = flowToParentElement;
continue;
}
const flowToParentElement = getParentFlowToElement(node);
if (flowToParentElement) {
node = flowToParentElement;
continue;
}
}
node = node.parentNode;