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<!DOCTYPE html>
<link rel=author href="mailto:jarhar@chromium.org">
<link rel=author href="mailto:falken@chromium.org">
<link rel=help href="https://html.spec.whatwg.org/multipage/interactive-elements.html#the-dialog-element">
<link rel=help href="https://bugs.chromium.org/p/chromium/issues/detail?id=253357">
<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>
<script src="/common/top-layer.js"></script>
<script src="/close-watcher/resources/helpers.js"></script>
<!--
To test manually, hit Escape once to see the topmost dialog turn green
then once again to close it. Repeat for the remaining dialog.
-->
<style>
#bottom {
top: 100px;
left: 100px;
height: 300px;
width: 300px;
margin: 0;
background: cyan;
}
#top {
top: 150px;
left: 150px;
height: 200px;
width: 200px;
margin: 0;
background: yellow;
}
</style>
<dialog id="bottom">
<span></span>
<div>You can't Escape when this textbox has focus: <input id="swallow-input" type="text"></div>
<div>You can Escape even if this textbox has focus: <input id="normal-input" type="text"></div>
</dialog>
<dialog id="top">
<span></span>
</dialog>
<script>
function handleCancel(event) {
this.style.background = 'green';
this.querySelector('span').textContent = 'I blocked the cancel! Try again to close me.';
event.preventDefault();
this.removeEventListener('cancel', handleCancel);
}
promise_test(async () => {
bottomDialog = document.getElementById('bottom');
bottomDialog.addEventListener('cancel', handleCancel);
topDialog = document.getElementById('top');
topDialog.addEventListener('cancel', handleCancel);
normalInput = document.getElementById('normal-input');
swallowInput = document.getElementById('swallow-input');
swallowInput.addEventListener('keydown', function(event) {
event.preventDefault();
});
bottomDialog.showModal();
await blessTopLayer(bottomDialog);
topDialog.showModal();
await blessTopLayer(topDialog);
await sendEscKey();
assert_true(topDialog.open, 'Top dialog event listener should prevent closing.');
assert_true(bottomDialog.open, 'Top dialog event listener should prevent closing.');
await blessTopLayer(topDialog);
await sendEscKey();
assert_false(topDialog.open, 'Top dialog should close.');
assert_true(bottomDialog.open, 'Top dialog should close.');
swallowInput.focus();
await sendEscKey();
await sendEscKey();
await sendEscKey();
assert_false(topDialog.open, 'Input should swallow Escape mechanism.');
assert_true(bottomDialog.open, 'Input should swallow Escape mechanism.');
normalInput.focus();
await sendEscKey();
assert_false(topDialog.open, 'Bottom dialog event listener should prevent closing.');
assert_true(bottomDialog.open, 'Bottom dialog event listener should prevent closing.');
await sendEscKey();
assert_false(topDialog.open, 'Bottom dialog should close.');
assert_false(bottomDialog.open, 'Bottom dialog should close.');
await sendEscKey();
assert_false(topDialog.open, 'Pressing Escape now should do nothing.');
assert_false(bottomDialog.open, 'Pressing Escape now should do nothing.');
bottomDialog.remove();
topDialog.remove();
}, 'Modal dialogs should close when the escape key is pressed.');
</script>
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