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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-view-transitions/input-targets-root-while-render-blocked.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<title>View transitions: ensure input targets document root while rendering is suppressed</title>
<link rel="author" href="mailto:bokan@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<div id="testContent">
<style>
:root {
/* Ensure clicks during the transition fall through the pseudo tree root to
* real DOM */
view-transition-name: none;
}
::view-transition {
/* Ensure clicks during the transition fall through the pseudo tree root to
* real DOM */
pointer-events: none;
width: 0;
height: 0;
}
::view-transition-group(*) {
animation-duration: 30s;
}
#clicktarget {
width: 100px;
height: 100px;
background: red;
}
#transition {
width: 100px;
height: 100px;
background: blue;
contain: paint;
view-transition-name: transitionElement;
}
</style>
<div id="clicktarget"></div>
<div id="transition"></div>
</div>
<iframe id="subframe"></iframe>
<script>
// Click at (x, y) in top-level window and wait for click in doc
async function sendAndWaitForClick(x, y, doc) {
return new Promise(async (resolve) => {
function eventHandler(ev) {
resolve(ev);
}
doc.documentElement.addEventListener("click", eventHandler);
await new test_driver.Actions()
.setContext(window)
.addPointer("mousePointer1", "mouse")
.pointerMove(x, y, {origin: 'viewport', sourceName: "mousePointer1"})
.pointerDown({sourceName: "mousePointer1"})
.pointerUp({sourceName: "mousePointer1"})
.send();
doc.documentElement.removeEventListener("click", eventHandler);
});
}
// Test that input targets doc root while doc is render blocked due to VT
async function test_input_target_during_transition(x, y, doc) {
assert_implements(doc.startViewTransition, "Missing document.startViewTransition");
const target = doc.getElementById("clicktarget");
assert_not_equals(target, null, "PRECONDITION: target element is valid");
// Ensure input is initialized before blocking rendering.
await new test_driver.Actions()
.setContext(window)
.addPointer("mousePointer1", "mouse")
.pointerMove(0, 0, {origin: "viewport", sourceName: "mousePointer1"})
.send();
let clickEvent = null;
const transition = doc.startViewTransition(async () => {
clickEvent = await sendAndWaitForClick(x, y, doc);
});
await transition.ready;
assert_equals(clickEvent.target, doc.documentElement,
"Events must target the document element while render blocked");
clickEvent = null;
clickEvent = await sendAndWaitForClick(x, y, doc);
// This just ensures we're not passing the above check by accident.
assert_equals(clickEvent.target, target,
"Events must target real DOM during transition");
}
promise_test(async t => {
await test_input_target_during_transition(10, 10, document);
}, "Input in render-blocked document targets root");
promise_test(async t => {
const iframeDoc = subframe.contentDocument;
iframeDoc.documentElement.innerHTML = testContent.innerHTML;
const rect = subframe.getBoundingClientRect();
await test_input_target_during_transition(rect.left + 10, rect.top + 10, iframeDoc);
}, "Input in render-blocked subframe targets subframe root");
</script>