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162 lines
4.9 KiB
HTML
162 lines
4.9 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Kanban Board</title>
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<style>
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#board {
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display: table;
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margin: 0;
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padding: 0;
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border-spacing: 5px;
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}
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.section {
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display: table-cell;
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margin: 0;
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border: 1px solid #666;
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padding: 5px;
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width: 300px;
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}
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.section.droppable {
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border: 1px dashed #666;
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}
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.section > h1 {
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margin: 0;
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border-bottom: 1px solid #999;
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padding: 0;
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font-size: 12pt;
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text-align: center;
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}
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.card {
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display: inline-block;
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vertical-align: top;
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margin: 10px 5px;
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padding: 10px;
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width: 100px;
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height: 100px;
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color: black;
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background: #ff8;
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cursor: move;
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text-align: center;
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font-family: "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif;
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box-shadow: 2px 2px 2px #eee;
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}
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</style>
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</head>
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<body>
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<h1>Kanban Board</h1>
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<div id="board">
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<div id="todo" class="section">
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<h1>To Do</h1>
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<div id="c2" class="card">Make Killer App</div>
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<div id="c3" class="card"><em>Retire!</em></div>
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</div>
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<div id="doing" class="section">
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<h1>Doing</h1>
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<div id="c1" class="card">Learn HTML5</div>
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</div>
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<div id="done" class="section">
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<h1>Done</h1>
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</div>
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</div>
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<script>
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var cards = document.querySelectorAll('.card');
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for (var i = 0, n = cards.length; i < n; i++) {
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var card = cards[i];
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card.draggable = true;
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};
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var board = document.getElementById('board');
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var hideMe;
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board.onselectstart = function(e) {
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e.preventDefault();
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}
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board.ondragstart = function(e) {
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console.log('dragstart');
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hideMe = e.target;
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e.dataTransfer.setData('card', e.target.id);
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e.dataTransfer.effectAllowed = 'move';
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};
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board.ondragend = function(e) {
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e.target.style.visibility = 'visible';
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};
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var lastEneterd;
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board.ondragenter = function(e) {
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console.log('dragenter');
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if (hideMe) {
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hideMe.style.visibility = 'hidden';
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hideMe = null;
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}
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// Save this to check in dragleave.
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lastEntered = e.target;
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var section = closestWithClass(e.target, 'section');
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// TODO: Check that it's not the original section.
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if (section) {
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section.classList.add('droppable');
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e.preventDefault(); // Not sure if these needs to be here. Maybe for IE?
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return false;
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}
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};
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board.ondragover = function(e) {
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// TODO: Check data type.
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// TODO: Check that it's not the original section.
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if (closestWithClass(e.target, 'section')) {
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e.preventDefault();
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}
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};
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board.ondragleave = function(e) {
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// FF is raising this event on text nodes so only check elements.
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if (e.target.nodeType === 1) {
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// dragleave for outer elements can trigger after dragenter for inner elements
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// so make sure we're really leaving by checking what we just entered.
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// relatedTarget is missing in WebKit: https://bugs.webkit.org/show_bug.cgi?id=66547
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var section = closestWithClass(e.target, 'section');
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if (section && !section.contains(lastEntered)) {
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section.classList.remove('droppable');
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}
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}
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lastEntered = null; // No need to keep this around.
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};
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board.ondrop = function(e) {
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var section = closestWithClass(e.target, 'section');
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var id = e.dataTransfer.getData('card');
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if (id) {
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var card = document.getElementById(id);
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// Might be a card from another window.
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if (card) {
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if (section !== card.parentNode) {
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section.appendChild(card);
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}
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} else {
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alert('couldn\'t find card #' + id);
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}
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}
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section.classList.remove('droppable');
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e.preventDefault();
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};
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function closestWithClass(target, className) {
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while (target) {
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if (target.nodeType === 1 &&
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target.classList.contains(className)) {
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return target;
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}
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target = target.parentNode;
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}
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return null;
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}
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</script>
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</body>
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</html> |