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<!DOCTYPE html>
<meta charset="utf-8" />
<title>Popover events</title>
<link rel="author" href="mailto:masonf@chromium.org">
<link rel=help href="https://open-ui.org/components/popup.research.explainer">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/popover-utils.js"></script>
<div popover>Popover</div>
<script>
window.onload = () => {
for(const method of ["listener","attribute"]) {
promise_test(async t => {
const popover = document.querySelector('[popover]');
assert_false(popover.matches(':open'));
let showCount = 0;
let hideCount = 0;
function listener(e) {
if (e.newState === "open") {
assert_equals(e.currentState,"closed",'Popover toggleevent states should be "open" and "closed"')
assert_true(e.target.matches(':closed'),'The popover should be in the :closed state when the opening event fires.');
assert_false(e.target.matches(':open'),'The popover should *not* be in the :open state when the opening event fires.');
++showCount;
} else {
assert_equals(e.currentState,"open",'Popover toggleevent states should be "open" and "closed"')
assert_equals(e.newState,"closed",'Popover toggleevent states should be "open" and "closed"')
assert_true(e.target.matches(':open'),'The popover should be in the :open state when the hiding event fires.');
assert_false(e.target.matches(':closed'),'The popover should *not* be in the :closed state when the hiding event fires.');
++hideCount;
}
};
switch (method) {
case "listener":
const controller = new AbortController();
const signal = controller.signal;
t.add_cleanup(() => controller.abort());
// The 'beforetoggle' event bubbles.
document.addEventListener('beforetoggle', listener, {signal});
break;
case "attribute":
assert_false(popover.hasAttribute('onbeforetoggle'));
t.add_cleanup(() => popover.removeAttribute('onbeforetoggle'));
popover.onbeforetoggle = listener;
break;
default: assert_unreached();
}
assert_equals(0,showCount);
assert_equals(0,hideCount);
popover.showPopover();
assert_true(popover.matches(':open'));
assert_equals(1,showCount);
assert_equals(0,hideCount);
await waitForRender();
assert_true(popover.matches(':open'));
popover.hidePopover();
assert_false(popover.matches(':open'));
assert_equals(1,showCount);
assert_equals(1,hideCount);
await waitForRender();
// No additional events after animation frame
assert_false(popover.matches(':open'));
assert_equals(1,showCount);
assert_equals(1,hideCount);
}, `Toggle event (${method}) get properly dispatched for popovers`);
}
promise_test(async t => {
const popover = document.querySelector('[popover]');
const controller = new AbortController();
const signal = controller.signal;
t.add_cleanup(() => controller.abort());
let cancel = true;
popover.addEventListener('beforetoggle',(e) => {
if (e.newState !== "open")
return;
if (cancel)
e.preventDefault();
}, {signal});
assert_false(popover.matches(':open'));
popover.showPopover();
assert_false(popover.matches(':open'),'The "beforetoggle" event should be cancelable for the "opening" transition');
cancel = false;
popover.showPopover();
assert_true(popover.matches(':open'));
popover.hidePopover();
assert_false(popover.matches(':open'));
}, 'Toggle event is cancelable for the "opening" transition');
};
</script>
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