<!DOCTYPE html>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<style>
#draggable, #testend {
border: 1px solid black;
width: 100px;
height: 100px;
margin: 20px;
}
</style>
<div id="draggable" draggable="true">
</div>
<div id="testend">
</div>
<a id="link" href="https://www.chromium.org">A draggable link</a>
<p>
This tests WebKit's drag and drop thresholds. Due to the fine movements
required, manual testing is not possible.
</p>
<script>
function runTest(t, description, target, deltaX, deltaY, expectedDrag) {
const draggableCenterX = target.offsetLeft + target.offsetWidth / 2;
const draggableCenterY = target.offsetTop + target.offsetHeight / 2;
const testEnd = document.getElementById('testend');
const endCenterX = testEnd.offsetLeft + testEnd.offsetWidth / 2;
const endCenterY = testEnd.offsetTop + testEnd.offsetHeight / 2;
let dragStarted = false;
target.ondragstart = () => dragStarted = true;
const testEndPromise = new Promise((resolve, reject) => {
testEnd.onmouseup = () => resolve(true);
eventSender.mouseMoveTo(draggableCenterX, draggableCenterY);
eventSender.mouseDown();
setTimeout(() => {
eventSender.mouseMoveTo(
draggableCenterX + deltaX, draggableCenterY + deltaY);
eventSender.mouseUp();
eventSender.mouseMoveTo(endCenterX, endCenterY);
eventSender.mouseDown();
eventSender.mouseUp();
}, 100);
});
return testEndPromise.then(() => {
t.step(() => {
assert_equals(dragStarted, expectedDrag,
'dragstart did not occur as expected');
});
});
}
(() => {
const draggable = document.getElementById('draggable');
const link = document.getElementById('link');
link.onclick = (event) => event.preventDefault();
const testCases = [
['No movement', draggable, 0, 0, false],
['Small positive X movement', draggable, 2, 0, false],
['Large positive X movement', draggable, 20, 0, true],
['Small negative X movement', draggable, -2, 0, false],
['Large negative X movement', draggable, -20, 0, true],
['Small positive Y movement', draggable, 0, 2, false],
['Large positive Y movement', draggable, 0, 20, true],
['Small negative Y movement', draggable, 0, -2, false],
['Large negative Y movement', draggable, 0, 20, true],
['Small positive X + positive Y movement', draggable, 2, 2, false],
['Small negative X + positive Y movement', draggable, -2, 2, false],
['Small positive X + negative Y movement', draggable, 2, -2, false],
['Small negative X + negative Y movement', draggable, -2, -2, false],
['Link, small positive X movement', link, 2, 0, false],
['Link, large positive X movement', link, 20, 0, true],
['Link, small negative X movement', link, -2, 0, false],
['Link, large negative X movement', link, -20, 0, true],
['Link, small positive Y movement', link, 0, 2, false],
['Link, large positive Y movement', link, 0, 20, true],
['Link, small negative Y movement', link, 0, -2, false],
['Link, large negative Y movement', link, 0, 20, true],
];
for (const testCase of testCases) {
promise_test((t) => runTest(t, ...testCase), testCase[0]);
}
})();
</script>