puppeteer-core
Version:
A high-level API to control headless Chrome over the DevTools Protocol
60 lines • 1.61 kB
JavaScript
/**
* @license
* Copyright 2024 Google Inc.
* SPDX-License-Identifier: Apache-2.0
*/
const HIDDEN_VISIBILITY_VALUES = ['hidden', 'collapse'];
/**
* @internal
*/
export const checkVisibility = (node, visible) => {
if (!node) {
return visible === false;
}
if (visible === undefined) {
return node;
}
const element = (node.nodeType === Node.TEXT_NODE ? node.parentElement : node);
const style = window.getComputedStyle(element);
const isVisible = style &&
!HIDDEN_VISIBILITY_VALUES.includes(style.visibility) &&
!isBoundingBoxEmpty(element);
return visible === isVisible ? node : false;
};
function isBoundingBoxEmpty(element) {
const rect = element.getBoundingClientRect();
return rect.width === 0 || rect.height === 0;
}
const hasShadowRoot = (node) => {
return 'shadowRoot' in node && node.shadowRoot instanceof ShadowRoot;
};
/**
* @internal
*/
export function* pierce(root) {
if (hasShadowRoot(root)) {
yield root.shadowRoot;
}
else {
yield root;
}
}
/**
* @internal
*/
export function* pierceAll(root) {
root = pierce(root).next().value;
yield root;
const walkers = [document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT)];
for (const walker of walkers) {
let node;
while ((node = walker.nextNode())) {
if (!node.shadowRoot) {
continue;
}
yield node.shadowRoot;
walkers.push(document.createTreeWalker(node.shadowRoot, NodeFilter.SHOW_ELEMENT));
}
}
}
//# sourceMappingURL=util.js.map