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<p>This test ensures selectstart is fired exactly once when selecting text by a mouse drag.
</p><span style='font-size: 50px; padding: 10px;' contenteditable>hello
</span><pre><script>
var span = document.getElementsByTagName('span')[0];
span.focus();
var selectStartCount = 0;
span.addEventListener('selectstart', function (event) { selectStartCount++; });
function expect(title, expectedCount, expectedType) {
document.write(title + ': ');
var actualSelectionType = window.getSelection().isCollapsed ? 'caret' : 'range';
if (selectStartCount != expectedCount)
document.writeln('FAIL - expected ' + expectedCount + ' events but got ' + selectStartCount + ' events');
else if (actualSelectionType != expectedType)
document.writeln('FAIL - expected selection to be ' + expectedType + ' but was ' + actualSelectionType);
else
document.writeln('PASS');
}
if (window.testRunner && !window.eventSender)
document.write('This test requires eventSender');
else if (window.testRunner) {
testRunner.dumpAsText();
var y = span.offsetTop + span.offsetHeight / 2;
function leapForwardAndMove(x) {
eventSender.leapForward(200);
eventSender.mouseMoveTo(span.offsetLeft + x, y);
}
expect('Initial state', 0, 'caret');
eventSender.dragMode = false;
eventSender.mouseMoveTo(span.offsetLeft + 5, y);
eventSender.mouseDown();
expect('Mouse down', 1, 'caret');
leapForwardAndMove(5);
expect('Moving slightly to the right', 1, 'caret');
leapForwardAndMove(-5);
expect('Moving slightly to the left', 1, 'caret');
leapForwardAndMove(span.offsetWidth / 2);
expect('Moving to the right', 1, 'range');
leapForwardAndMove(span.offsetWidth);
expect('Moving further to the right', 1, 'range');
leapForwardAndMove(0);
expect('Moving back to the left', 1, 'caret');
leapForwardAndMove(span.offsetWidth);
expect('Moving to the right again', 1, 'range');
eventSender.mouseUp();
window.getSelection().collapse(span, 0);
eventSender.leapForward(1000);
eventSender.mouseMoveTo(span.offsetLeft + span.offsetWidth - 5, y);
eventSender.mouseDown();
expect('Mouse down on the right', 2, 'caret');
leapForwardAndMove(span.offsetWidth / 2);
expect('Moving to the left', 2, 'range');
eventSender.mouseUp();
document.writeln('Done.');
span.parentNode.removeChild(span);
}
</script></pre>
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