29 lines
1.1 KiB
JavaScript
29 lines
1.1 KiB
JavaScript
// This function is a version of test_driver.bless which works while there are
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// elements in the top layer:
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// https://github.com/web-platform-tests/wpt/issues/41218.
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// Pass it the element at the top of the top layer stack.
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window.blessTopLayer = async (topLayerElement) => {
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const button = document.createElement('button');
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topLayerElement.append(button);
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let wait_click = new Promise(resolve => button.addEventListener("click", resolve, {once: true}));
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await test_driver.click(button);
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await wait_click;
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button.remove();
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};
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window.isTopLayer = (el) => {
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// A bit of a hack. Just test a few properties of the ::backdrop pseudo
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// element that change when in the top layer.
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const properties = ['right','background'];
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const testEl = document.createElement('div');
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document.body.appendChild(testEl);
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const computedStyle = getComputedStyle(testEl, '::backdrop');
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const nonTopLayerValues = properties.map(p => computedStyle[p]);
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testEl.remove();
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for(let i=0;i<properties.length;++i) {
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if (getComputedStyle(el,'::backdrop')[properties[i]] !== nonTopLayerValues[i]) {
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return true;
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}
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}
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return false;
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};
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