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content / test / data / accessibility / display-locking / viewport-activation.html [blame]
<!--
@BLINK-ALLOW:offscreen
@AURALINUX-ALLOW:visible
@WAIT-FOR:doneActivating
-->
<div>
<div id="initialSpacer" style="height: 10000px;">
initial spacer, will initially make everything below this far away from the viewport
</div>
<div id="inViewport" style="content-visibility: auto">
This text will get viewport-activated because it's in the viewport, and will be in AX tree with layout.
</div>
<div id="alsoInViewport" style="content-visibility: auto">
This text is also in viewport.
</div>
<div style="height: 10000px;">
spacer so that everything below will be offscreen (and won't get viewport-activated)
</div>
<div id="wayBelowViewport" style="content-visibility: auto">
This text will not get viewport-activated, and will be in AX tree but without layout.
</div>
<div id="statusDiv"></div>
</div>
<script>
// Viewport activation happens on the next frame, so we'll wait until then before ending.
window.addEventListener("scroll", () => {
window.requestAnimationFrame(() => {
window.requestAnimationFrame(() => {
statusDiv.innerText = "doneActivating";
});
});
});
// Scroll so that #inViewport will be at the top of the viewport.
window.scrollTo(0, initialSpacer.offsetHeight);
</script>