mirror of
https://github.com/servo/servo
synced 2026-04-28 18:37:39 +02:00
85 lines
3.0 KiB
HTML
85 lines
3.0 KiB
HTML
<!doctype html>
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<html>
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<head>
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<title>Drag and drop without cancelling dragenter and without body or html</title>
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<style type="text/css">
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body > div:first-child {
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height: 100px;
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width: 100px;
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background: orange;
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display: inline-block;
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}
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iframe {
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height: 100px;
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width: 100px;
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margin-left: 100px;
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display: inline-block;
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border: none;
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}
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</style>
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<script type="text/javascript">
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//Drag passes from parent to blue. Dragenter fires at blue. Root element is deleted.
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//Dragenter is not cancelled. Body does not exist. Root element does not exist.
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//Current target element is set to null. Drag now points at unrendered document - null.
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//Current target element remains null.
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//Drag passes over parent to orange. Dragenter fires at orange, and is cancelled.
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window.onload = function () {
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var orange = document.getElementsByTagName('div')[0], sequence = [];
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orange.ondragstart = function (e) {
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e.dataTransfer.setData('text','hello');
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e.dataTransfer.effectAllowed = 'copy';
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};
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orange.ondragenter = orange.ondrop = function (e) {
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sequence[sequence.length] = 'orange.'+e.type;
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e.preventDefault();
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};
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orange.ondragleave = function (e) {
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sequence[sequence.length] = 'orange.dragleave';
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};
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orange.ondragover = function (e) {
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if( sequence[sequence.length-1] != 'orange.dragover' ) {
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sequence[sequence.length] = 'orange.dragover';
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}
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e.preventDefault();
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};
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var blue = document.getElementsByTagName('iframe')[0].contentDocument;
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if( !blue.documentElement ) { blue.appendChild(blue.createElement('html')); }
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blue.documentElement.style.margin = '0';
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blue.documentElement.style.padding = '0';
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if( !blue.body ) { blue.documentElement.appendChild(blue.createElement('body')); }
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blue.body.style.margin = '0';
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blue.body.style.padding = '0';
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var bluediv = blue.body.appendChild(blue.createElement('div'));
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bluediv.style.height = '100px';
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bluediv.style.width = '100px';
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bluediv.style.background = 'blue';
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bluediv.ondragenter = bluediv.ondragover = function (e) {
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sequence[sequence.length] = 'blue.'+e.type;
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if( blue.documentElement ) { blue.removeChild(blue.documentElement); }
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};
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blue.ondragenter = blue.ondragover = blue.ondragleave = function (e) {
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if( e.target != this ) { return; }
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sequence[sequence.length] = 'bluedocument.'+e.type;
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};
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orange.ondragend = function (e) {
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sequence = sequence.join('=>')
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var desiredsequence = (['orange.dragenter','orange.dragover','orange.dragleave','blue.dragenter','orange.dragenter','orange.dragover','orange.drop']).join('=>')
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if( sequence == desiredsequence ) {
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document.getElementsByTagName('div')[1].innerHTML = 'PASS';
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} else {
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document.getElementsByTagName('div')[1].innerHTML = 'FAIL, got:<br>'+sequence+'<br>instead of:<br>'+desiredsequence;
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}
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};
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};
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</script>
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</head>
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<body>
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<div draggable="true"></div><iframe src="about:blank"></iframe>
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<div> </div>
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<p>Drag the orange square onto the blue square, then back to the orange square, and release it.</p>
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<noscript><p>Enable JavaScript and reload</p></noscript>
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</body>
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</html>
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