128 lines
4.2 KiB
HTML
128 lines
4.2 KiB
HTML
<!DOCTYPE html>
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<title>CSS Transitions Test: Cascading @starting-style</title>
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<link rel="help" href="https://drafts.csswg.org/css-transitions-2/#defining-before-change-style-the-starting-style-rule">
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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="/css/css-transitions/support/helper.js"></script>
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<style>
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.color-transition {
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transition: color 100s steps(2, start);
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}
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@starting-style {
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#t1 { color: red; }
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}
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#t1 { color: green; }
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@starting-style {
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div#t2 { color: lime; }
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}
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#t2 { color: green; }
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#t3 { color: green; }
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@starting-style {
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#t3 { color: red; }
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}
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#t3 > div { color: green; }
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#t4 { color: green; }
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#t4[hidden] { color: red; }
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#t4 > div { color: lime; }
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@starting-style {
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#t4 > div { color: inherit; }
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}
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#t5 { color: green; }
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@starting-style {
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#t5 { color: black; }
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}
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#t5 > div { color: lime; }
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@starting-style {
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#t5 > div { color: inherit; }
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}
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#t6 { color: green; }
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@starting-style {
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#t6 { color: black; }
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}
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#t6 .color-transition { color: lime; }
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@starting-style {
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#t6 .color-transition { color: inherit; }
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}
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</style>
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<div id="t1" hidden class="color-transition"></div>
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<div id="t2" hidden class="color-transition"></div>
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<div id="t3" hidden>
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<div class="color-transition"></div>
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</div>
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<div id="t4" hidden>
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<div class="color-transition"></div>
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</div>
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<div id="t5" hidden class="color-transition">
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<div class="color-transition"></div>
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</div>
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<div id="t6" hidden class="color-transition">
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<div>
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<div class="color-transition"></div>
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</div>
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</div>
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<script>
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setup(() => {
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assert_true(supportsStartingStyle(), "Prerequisite: @starting-style parses");
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});
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promise_test(async t => {
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await waitForAnimationFrames(2);
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t1.removeAttribute("hidden");
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await waitForAnimationFrames(2);
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assert_equals(getComputedStyle(t1).color, "rgb(0, 128, 0)",
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"No transition of color");
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}, "Overridden @starting-style - order of appearance");
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promise_test(async t => {
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t2.removeAttribute("hidden");
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await waitForAnimationFrames(2);
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assert_equals(getComputedStyle(t2).color, "rgb(0, 192, 0)",
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"Transition of color");
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}, "@starting-style with higher specificity");
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promise_test(async t => {
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t3.removeAttribute("hidden");
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await waitForAnimationFrames(2);
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assert_equals(getComputedStyle(t3.firstElementChild).color, "rgb(0, 128, 0)",
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"No transition of color");
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}, "Starting style does not inherit from parent starting style");
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promise_test(async t => {
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assert_equals(getComputedStyle(t4).color, "rgb(255, 0, 0)",
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"Parent transition started");
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t4.removeAttribute("hidden");
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await waitForAnimationFrames(2);
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assert_equals(getComputedStyle(t4).color, "rgb(0, 128, 0)",
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"Parent changed to green");
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assert_equals(getComputedStyle(t4.firstElementChild).color, "rgb(0, 192, 0)",
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"Transition started from parent's after-change style color");
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}, "Starting style inheriting from parent's after-change style");
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promise_test(async t => {
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t5.removeAttribute("hidden");
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await waitForAnimationFrames(2);
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assert_equals(getComputedStyle(t5).color, "rgb(0, 64, 0)",
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"Parent transition started");
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assert_equals(getComputedStyle(t5.firstElementChild).color, "rgb(0, 192, 0)",
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"Transition started from parent's after-change style color");
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}, "Starting style inheriting from parent's after-change style while parent transitioning");
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promise_test(async t => {
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t6.removeAttribute("hidden");
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await waitForAnimationFrames(2);
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assert_equals(getComputedStyle(t6).color, "rgb(0, 64, 0)",
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"Parent transition started");
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assert_equals(getComputedStyle(t6.firstElementChild).color, "rgb(0, 64, 0)",
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"Inherited effect from parent transition");
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assert_equals(getComputedStyle(t6.firstElementChild.firstElementChild).color, "rgb(0, 192, 0)",
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"Transition started from parent's after-change style color, inherited from ancestors after-change color");
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}, "Starting style inheriting from parent's after-change style while ancestor is transitioning");
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</script>
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