| <!DOCTYPE html> |
| <title>drag & drop - microdata with sibling itemref loop</title> |
| <style> |
| body > div { |
| height: 200px; |
| width: 200px; |
| background-color: orange; |
| position: absolute; |
| top: 8px; |
| left: 8px; |
| } |
| body > div *, span { |
| display: none; |
| } |
| body > div + div { |
| background-color: navy; |
| left: 250px; |
| } |
| body > div + div + div { |
| background-color: fuchsia; |
| left: 500px; |
| } |
| p:first-of-type { |
| margin-top: 220px; |
| } |
| </style> |
| |
| <script> |
| |
| function makeEl(eltype,props,contents) { |
| var elem = document.createElement(eltype); |
| for( var i in props ) { |
| if( props.hasOwnProperty(i) ) { |
| elem.setAttribute(i,props[i]); |
| } |
| } |
| if( contents ) { |
| elem.innerHTML = contents; |
| } |
| return elem; |
| } |
| |
| var orange, fails = [], doneonce = false; |
| window.onload = function() { |
| orange = document.getElementsByTagName('div')[0]; |
| |
| orange.ondragstart = function(e) { |
| e.dataTransfer.effectAllowed = 'copy'; |
| e.dataTransfer.setData('Text', 'dummy text'); |
| var err; |
| if( err = checkprops(e.dataTransfer.getData('application/microdata+json')) ) { |
| fails[fails.length] = e.type + ' ' + err; |
| } |
| }; |
| orange.nextSibling.ondragenter = orange.nextSibling.ondragleave = orange.nextSibling.ondragover = |
| orange.ondrag = orange.ondragend = function(e) { |
| if( e.type == 'dragover' || e.type == 'dragenter' ) { |
| e.preventDefault(); |
| e.dataTransfer.dropEffect = 'copy'; |
| } |
| if( e.dataTransfer.getData('application/microdata+json') ) { |
| fails[fails.length] = e.type + ' unexpectedly had microdata (security restriction)'; |
| } |
| }; |
| orange.nextSibling.ondrop = function(e) { |
| var err; |
| if( err = checkprops(e.dataTransfer.getData('application/microdata+json')) ) { |
| fails[fails.length] = e.type + ' ' + err; |
| } |
| if( e.type != 'drop' ) { return; } |
| if( doneonce ) { return; } |
| doneonce = true; |
| setTimeout(function () { |
| document.getElementsByTagName('p')[0].innerHTML = fails.length ? ( 'FAIL: ' + fails.join('<br>') ) : 'PASS'; |
| fails = []; |
| }, 200 ); |
| }; |
| |
| }; |
| function checkprops(md) { |
| // http://dev.w3.org/html5/md/#extracting-json |
| //"check if the element is a top-level microdata item, and if it is" |
| //as it has itemprop, it is not a top-level item, and should be ignored |
| var i; |
| if( !md ) { return 'no microdata'; } |
| md = JSON.parse(md); |
| if( !md.items ) { return 'no items'; } |
| if( md.items.length != 0 ) { return md.items.length+' items instead of 0'; } |
| return ''; |
| } |
| |
| </script> |
| |
| <div draggable='true' itemscope itemprop='foo' id='id1' itemref='id2'></div><div id='id2' itemprop='bar' itemscope itemref='id1'></div><div></div> |
| |
| <p>Use your pointing device to drag the orange box to the pink box, then back to the blue box, and release it.</p> |
| <noscript><p>Enable JavaScript and reload</p></noscript> |