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<!DOCTYPE HTML>
<meta charset="UTF-8">
<title>CSS Toggles: CSSToggle and CSSToggleMap API</title>
<link rel="author" title="L. David Baron" href="https://dbaron.org/">
<link rel="author" title="Google" href="http://www.google.com/">
<link rel="help" href="https://tabatkins.github.io/css-toggle/#csstoggleevent">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/toggle-helpers.js"></script>
<div id="test"></div>
<script>
let container = document.getElementById("test");
function click_while_waiting_for_togglechange(event_watcher, element) {
let p = event_watcher.wait_for("togglechange");
element.click();
return p;
}
promise_test(async test => {
container.innerHTML = `
<div id="element" style="toggle: mytoggle 2 at 1 self sticky"></div>
`;
const element = document.getElementById("element");
await wait_for_toggle_creation(element);
let toggle = element.toggles.get("mytoggle");
assert_equals(toggle.value, 1, "initial value of toggle");
const watcher = new EventWatcher(test, element, [ "togglechange" ]);
await click_while_waiting_for_togglechange(watcher, element).then(ev => {
assert_equals(Object.getPrototypeOf(ev), CSSToggleEvent.prototype);
assert_equals(ev.toggleName, "mytoggle", "event.toggleName after first change");
assert_equals(ev.toggle, toggle, "event.toggle after first change");
assert_equals(toggle.value, 2, "value after first change");
});
// Test that the event does not fire when the toggle doesn't change due to
// being "sticky" and stuck. EventWatcher will assert if there is an event.
element.click();
assert_equals(toggle.value, 2, "value after second change");
toggle.value = 0;
// there should be no event; EventWatcher will assert if there is one.
}, "basic toggle event firing");
</script>
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