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92 lines
4 KiB
HTML
92 lines
4 KiB
HTML
<!DOCTYPE HTML>
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<meta charset="UTF-8">
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<title>CSS Toggles: triggering multiple toggles with a style change</title>
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<link rel="author" title="L. David Baron" href="https://dbaron.org/">
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<link rel="author" title="Google" href="http://www.google.com/">
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<link rel="help" href="https://tabatkins.github.io/css-toggle/#toggle-trigger-property">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="support/toggle-helpers.js"></script>
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<div id="test"></div>
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<script>
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let container = document.getElementById("test");
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promise_test(async test => {
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container.innerHTML = `
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<style>
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#t {
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toggle-root: t1, t2, t3, t4;
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toggle-trigger: t1, t2, t3;
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}
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</style>
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<div id="t"></div>
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`;
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let t = document.getElementById("t");
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await wait_for_toggle_creation(t);
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assert_equals(t.toggles.size, 4, "t.toggles.size after creation");
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assert_equals(t.toggles.get("t1").value, 0, "t1 after creation");
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assert_equals(t.toggles.get("t2").value, 0, "t2 after creation");
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assert_equals(t.toggles.get("t3").value, 0, "t3 after creation");
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assert_equals(t.toggles.get("t4").value, 0, "t4 after creation");
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let event_count = 0;
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t.addEventListener("togglechange", event => {
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switch (++event_count) {
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case 1:
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assert_equals(event.toggleName, "t1", "name of first event");
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assert_equals(t.toggles.get("t1"), event.toggle);
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assert_equals(t.toggles.get("t1").value, 1, "t1 after first event");
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assert_equals(t.toggles.get("t2").value, 0, "t2 after first event");
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assert_equals(t.toggles.get("t3").value, 0, "t3 after first event");
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assert_equals(t.toggles.get("t4").value, 0, "t4 after first event");
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break;
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case 2:
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assert_equals(event.toggleName, "t2", "name of second event");
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assert_equals(t.toggles.get("t2"), event.toggle);
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assert_equals(t.toggles.get("t1").value, 1, "t1 after second event");
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assert_equals(t.toggles.get("t2").value, 1, "t2 after second event");
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assert_equals(t.toggles.get("t3").value, 0, "t3 after second event");
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assert_equals(t.toggles.get("t4").value, 0, "t4 after second event");
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// This changes the value of 'toggle-trigger' in the middle of
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// firing the toggle. We want to test that toggles continue firing
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// as expected.
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//
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// It's constructed this way to avoid the old style being cached
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// in Chromium's MatchedPropertiesCache, which allows this testcase
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// to trigger a crash before the fix that introduced it.
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t.previousElementSibling.sheet.cssRules[0].style.toggleTrigger = "t4";
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// This assertion is mainly to force the style to be recomputed:
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assert_equals(getComputedStyle(t).toggleTrigger, "t4");
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break;
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case 3:
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assert_equals(event.toggleName, "t3", "name of third event");
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assert_equals(t.toggles.get("t3"), event.toggle);
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assert_equals(t.toggles.get("t1").value, 1, "t1 after third event");
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assert_equals(t.toggles.get("t2").value, 1, "t2 after third event");
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assert_equals(t.toggles.get("t3").value, 1, "t3 after third event");
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assert_equals(t.toggles.get("t4").value, 0, "t4 after third event");
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break;
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case 4:
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assert_equals(event.toggleName, "t4", "name of fourth event");
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assert_equals(t.toggles.get("t4"), event.toggle);
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assert_equals(t.toggles.get("t1").value, 1, "t1 after fourth event");
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assert_equals(t.toggles.get("t2").value, 1, "t2 after fourth event");
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assert_equals(t.toggles.get("t3").value, 1, "t3 after fourth event");
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assert_equals(t.toggles.get("t4").value, 1, "t4 after fourth event");
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break;
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default:
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assert_unreached("should get four events");
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break;
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}
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});
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t.click();
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assert_equals(event_count, 3);
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t.click();
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assert_equals(event_count, 4);
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}, "triggering of multiple toggles with a change to toggle-trigger in the middle");
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</script>
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