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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
| commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
| tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /testing/web-platform/tests/css/cssom-view/resources/matchMedia.js | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip | |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/css/cssom-view/resources/matchMedia.js')
| -rw-r--r-- | testing/web-platform/tests/css/cssom-view/resources/matchMedia.js | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/cssom-view/resources/matchMedia.js b/testing/web-platform/tests/css/cssom-view/resources/matchMedia.js new file mode 100644 index 0000000000..f8947e0472 --- /dev/null +++ b/testing/web-platform/tests/css/cssom-view/resources/matchMedia.js @@ -0,0 +1,60 @@ +"use strict"; + +{ +// private variables are defined with `const` so they don't leak outside this block statement +const IFRAME_DEFAULT_SIZE = "200"; +const iframes = new WeakMap(); + +// helpers are defined with `var` so they are globally accessible +var createMQL = async t => { + const iframe = await createIFrame(t); + const mql = iframe.contentWindow.matchMedia(`(max-width: ${IFRAME_DEFAULT_SIZE}px)`); + assert_true(mql.matches, "MQL should match on newly created <iframe>"); + iframes.set(mql, iframe); + return mql; +}; + +var createIFrame = (t, width = IFRAME_DEFAULT_SIZE, height = width) => { + assert_not_equals(document.body, null, "<body> element is missing"); + + const iframe = document.createElement("iframe"); + iframe.srcdoc = ""; + iframe.width = String(width); + iframe.height = String(height); + iframe.style.border = "none"; + + t.add_cleanup(() => { + document.body.removeChild(iframe); + }); + + return new Promise(resolve => { + iframe.addEventListener("load", () => { + iframe.contentDocument.body.offsetWidth; // reflow + resolve(iframe); + }); + + document.body.appendChild(iframe); + }); +}; + +var triggerMQLEvent = mql => { + const iframe = iframes.get(mql); + assert_not_equals(iframe, undefined, "Passed MQL instance was not created with createMQL"); + iframe.width = iframe.width === IFRAME_DEFAULT_SIZE ? "250" : IFRAME_DEFAULT_SIZE; +}; + +var getWindow = mql => { + const iframe = iframes.get(mql); + assert_not_equals(iframe, undefined, "Passed MQL instance was not created with createMQL"); + return iframe.contentWindow; +}; + +var waitForChangesReported = () => { + return new Promise(resolve => { + requestAnimationFrame(() => { + requestAnimationFrame(resolve); + }); + }); +}; + +} |