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80 lines
2.8 KiB
HTML
80 lines
2.8 KiB
HTML
<!doctype html>
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<title>Same document navigation to text fragment directives</title>
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<meta charset=utf-8>
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<link rel="help" href="https://wicg.github.io/ScrollToTextFragment/">
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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>
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function reset() {
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location.hash = '';
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window.scrollTo(0, 0);
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}
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function isInViewport(element) {
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const viewportRect = {
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left: visualViewport.offsetLeft,
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top: visualViewport.offsetTop,
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right: visualViewport.offsetLeft + visualViewport.width,
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bottom: visualViewport.offsetTop + visualViewport.height
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};
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const elementRect = element.getBoundingClientRect();
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const elementCenter = {
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x: elementRect.left + elementRect.width / 2,
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y: elementRect.top + elementRect.height / 2
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};
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return elementCenter.x > viewportRect.left &&
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elementCenter.x < viewportRect.right &&
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elementCenter.y > viewportRect.top &&
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elementCenter.y < viewportRect.bottom;
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}
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function runTests() {
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// Ensure a simple text directive works correctly when navigated to the
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// same document using `location.hash`.
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promise_test(async t => {
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assert_implements(document.fragmentDirective, 'Text directive not implemented');
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reset();
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location.hash = ':~:text=line%20of%20text';
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await t.step_wait(() => window.scrollY > 0, "Wait for scroll");
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assert_true(isInViewport(document.getElementById('text')), 'Scrolled to text');
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}, 'Basic text directive navigation');
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// Test that we correctly fallback to the element id when we have a text
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// directive that doesn't match any text in the page.
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promise_test(async t => {
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assert_implements(document.fragmentDirective, 'Text directive not implemented');
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reset();
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location.hash = 'elementid:~:text=textDoesntExist';
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await t.step_wait(() => window.scrollY > 0, "Wait for scroll");
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assert_true(isInViewport(document.getElementById('elementid')), 'Scrolled to `elementid`');
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}, 'Basic element id fallback');
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// Test that we correctly fallback to the element id when we have a text
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// directive that's malformed and won't be parsed.
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promise_test(async t => {
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assert_implements(document.fragmentDirective, 'Text directive not implemented');
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reset();
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location.hash = 'elementid:~:text=,,,,,';
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await t.step_wait(() => window.scrollY > 0, "Wait for scroll");
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assert_true(isInViewport(document.getElementById('elementid')), 'Scrolled to `elementid`');
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}, 'Malformed text directive element id fallback');
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}
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</script>
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<style>
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div {
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margin: 200vh 0 200vh 0;
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}
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</style>
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<body onload="runTests()">
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<div id="text">
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This is a line of text.
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</div>
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<div id="elementid">
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This div has an id: 'elementid'.
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</div>
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</body>
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