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