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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS resize: interactive behavior</title>
<link rel="help" href="https://drafts.csswg.org/css-ui/#resize">
<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com">
<meta name="assert" content="This test checks that elements are correctly resized
when a user interacts with their resizing mechanism (simulated via WebDriver).">
<style>
body {
margin-bottom: 1000px;
}
.test {
width: 100px;
height: 100px;
overflow: scroll;
}
.resize-both {
resize: both;
}
.resize-horizontal {
resize: horizontal;
}
.resize-vertical {
resize: vertical;
}
.resize-block {
resize: block;
}
.resize-inline {
resize: inline;
}
.wm-horizontal {
writing-mode: horizontal-tb;
}
.wm-vertical {
writing-mode: vertical-lr;
}
.test::before {
content: "";
display: block;
width: 1000px;
height: 1000px;
}
</style>
<div class="test resize-both wm-horizontal"></div>
<div class="test resize-both wm-vertical"></div>
<div class="test resize-horizontal wm-horizontal"></div>
<div class="test resize-horizontal wm-vertical"></div>
<div class="test resize-vertical wm-horizontal"></div>
<div class="test resize-vertical wm-vertical"></div>
<div class="test resize-block wm-horizontal"></div>
<div class="test resize-block wm-vertical"></div>
<div class="test resize-inline wm-horizontal"></div>
<div class="test resize-inline wm-vertical"></div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script>
function hasHorizontalWritingMode(cs) {
return cs.writingMode === "horizontal-tb";
}
function getResolvedResize(cs) {
let { resize } = cs;
switch (resize) {
case "block":
return hasHorizontalWritingMode(cs) ? "vertical" : "horizontal";
case "inline":
return hasHorizontalWritingMode(cs) ? "horizontal" : "vertical";
default:
return resize;
}
}
for (let target of document.querySelectorAll(".test")) {
promise_test(async () => {
// Scroll element to the top, to ensure that the pointer stays within the vieport
// when resizing the element.
target.scrollIntoView();
await new test_driver.Actions()
// Place pointer on the resizing mechanism.
.pointerMove(49, 49, {origin: target})
.pointerDown()
// Resize the element.
.pointerMove(149, 149, {origin: target})
.pointerUp()
.send();
let resize = getResolvedResize(getComputedStyle(target));
if (resize === "horizontal" || resize === "both") {
assert_equals(target.offsetWidth, 200, "Width should have grown to 200px");
} else {
assert_equals(target.offsetWidth, 100, "Width should have stayed as 100px");
}
if (resize === "vertical" || resize === "both") {
assert_equals(target.offsetHeight, 200, "Height should have grown to 200px");
} else {
assert_equals(target.offsetHeight, 100, "Height should have stayed as 100px");
}
}, target.className);
}
</script>
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