<div class="dd" id="nestable">
<ol class="dd-list">
<li class="dd-item dd-nodrag" data-id="1">
<div class="dd-handle">Item 1</div>
</li>
<li class="dd-item" data-id="2">
<div class="dd-handle">Item 2</div>
<ol class="dd-list">
<li class="dd-item" data-id="3">
<div class="dd-handle">Item 3</div>
</li>
<li class="dd-item" data-id="4">
<div class="dd-handle">Item 4</div>
</li>
<li class="dd-item" data-id="5">
<div class="dd-handle">Item 5</div>
<ol class="dd-list">
<li class="dd-item" data-id="6">
<div class="dd-handle">Item 6</div>
</li>
<li class="dd-item" data-id="7">
<div class="dd-handle">Item 7</div>
</li>
<li class="dd-item" data-id="8">
<div class="dd-handle">Item 8</div>
</li>
</ol>
</li>
<li class="dd-item" data-id="9">
<div class="dd-handle">Item 9</div>
</li>
<li class="dd-item" data-id="10">
<div class="dd-handle">Item 10</div>
</li>
</ol>
</li>
<li class="dd-item" data-id="11">
<div class="dd-handle">Item 11</div>
</li>
<li class="dd-item" data-id="12">
<div class="dd-handle">Item 12</div>
</li>
</ol>
</div>
.cf:after {
visibility: hidden;
display: block;
font-size: 0;
content: " ";
clear: both;
height: 0;
}
* html .cf {
zoom: 1;
}
*:first-child+html .cf {
zoom: 1;
}
html {
margin: 0;
padding: 0;
}
body {
font-size: 100%;
margin: 0;
padding: 1.75em;
font-family: 'Helvetica Neue', Arial, sans-serif;
}
h1 {
font-size: 1.75em;
margin: 0 0 0.6em 0;
}
a {
color: #2996cc;
}
a:hover {
text-decoration: none;
}
p {
line-height: 1.5em;
}
.small {
color: #666;
font-size: 0.875em;
}
.large {
font-size: 1.25em;
}
/**
* Nestable
*/
.dd {
position: relative;
display: block;
margin: 0;
padding: 0;
max-width: 600px;
list-style: none;
font-size: 13px;
line-height: 20px;
}
.dd-list {
display: block;
position: relative;
margin: 0;
padding: 0;
list-style: none;
}
.dd-list .dd-list {
padding-left: 30px;
}
.dd-collapsed .dd-list {
display: none;
}
.dd-item,
.dd-empty,
.dd-placeholder {
display: block;
position: relative;
margin: 0;
padding: 0;
min-height: 20px;
font-size: 13px;
line-height: 20px;
}
.dd-handle {
display: block;
height: 30px;
margin: 5px 0;
padding: 5px 10px;
color: #333;
text-decoration: none;
font-weight: bold;
border: 1px solid #ccc;
background: #fafafa;
background: linear-gradient(top, #fafafa 0%, #eee 100%);
background: linear-gradient(top, #fafafa 0%, #eee 100%);
background: linear-gradient(top, #fafafa 0%, #eee 100%);
border-radius: 3px;
border-radius: 3px;
box-sizing: border-box;
box-sizing: border-box;
}
.dd-handle:hover {
color: #2ea8e5;
background: #fff;
}
.dd-item > button {
display: block;
position: relative;
cursor: pointer;
float: left;
width: 25px;
height: 20px;
margin: 5px 0;
padding: 0;
text-indent: 100%;
white-space: nowrap;
overflow: hidden;
border: 0;
background: transparent;
font-size: 12px;
line-height: 1;
text-align: center;
font-weight: bold;
}
.dd-item > button:before {
content: '+';
display: block;
position: absolute;
width: 100%;
text-align: center;
text-indent: 0;
}
.dd-item > button[data-action="collapse"]:before {
content: '-';
}
.dd-placeholder,
.dd-empty {
margin: 5px 0;
padding: 0;
min-height: 30px;
background: #f2fbff;
border: 1px dashed #b6bcbf;
box-sizing: border-box;
box-sizing: border-box;
}
.dd-empty {
border: 1px dashed #bbb;
min-height: 100px;
background-color: #e5e5e5;
background-image: linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff), linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff);
background-image: linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff), linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff);
background-image: linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff), linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff);
background-size: 60px 60px;
background-position: 0 0, 30px 30px;
}
.dd-dragel {
position: absolute;
pointer-events: none;
z-index: 9999;
}
.dd-dragel > .dd-item .dd-handle {
margin-top: 0;
}
.dd-dragel .dd-handle {
box-shadow: 2px 4px 6px 0 rgba(0, 0, 0, .1);
box-shadow: 2px 4px 6px 0 rgba(0, 0, 0, .1);
}
/**
* Nestable Extras
*/
.nestable-lists {
display: block;
clear: both;
padding: 30px 0;
width: 100%;
border: 0;
border-top: 2px solid #ddd;
border-bottom: 2px solid #ddd;
}
#nestable-menu {
padding: 0;
margin: 20px 0;
}
#nestable-output,
#nestable2-output {
width: 100%;
height: 7em;
font-size: 0.75em;
line-height: 1.333333em;
font-family: Consolas, monospace;
padding: 5px;
box-sizing: border-box;
box-sizing: border-box;
}
#nestable2 .dd-handle {
color: #fff;
border: 1px solid #999;
background: #bbb;
background: linear-gradient(top, #bbb 0%, #999 100%);
background: linear-gradient(top, #bbb 0%, #999 100%);
background: linear-gradient(top, #bbb 0%, #999 100%);
}
#nestable2 .dd-handle:hover {
background: #bbb;
}
#nestable2 .dd-item > button:before {
color: #fff;
}
@media only screen and (min-width: 700px) {
.dd {
float: left;
width: 48%;
}
.dd + .dd {
margin-left: 2%;
}
}
.dd-hover > .dd-handle {
background: #2ea8e5 !important;
}
/**
* Nestable Draggable Handles
*/
.dd3-content {
display: block;
height: 30px;
margin: 5px 0;
padding: 5px 10px 5px 40px;
color: #333;
text-decoration: none;
font-weight: bold;
border: 1px solid #ccc;
background: #fafafa;
background: linear-gradient(top, #fafafa 0%, #eee 100%);
background: linear-gradient(top, #fafafa 0%, #eee 100%);
background: linear-gradient(top, #fafafa 0%, #eee 100%);
border-radius: 3px;
border-radius: 3px;
box-sizing: border-box;
box-sizing: border-box;
}
.dd3-content:hover {
color: #2ea8e5;
background: #fff;
}
.dd-dragel > .dd3-item > .dd3-content {
margin: 0;
}
.dd3-item > button {
margin-left: 30px;
}
.dd3-handle {
position: absolute;
margin: 0;
left: 0;
top: 0;
cursor: pointer;
width: 30px;
text-indent: 100%;
white-space: nowrap;
overflow: hidden;
border: 1px solid #aaa;
background: #ddd;
background: linear-gradient(top, #ddd 0%, #bbb 100%);
background: linear-gradient(top, #ddd 0%, #bbb 100%);
background: linear-gradient(top, #ddd 0%, #bbb 100%);
border-top-right-radius: 0;
border-bottom-right-radius: 0;
}
.dd3-handle:before {
content: '≡';
display: block;
position: absolute;
left: 0;
top: 3px;
width: 100%;
text-align: center;
text-indent: 0;
color: #fff;
font-size: 20px;
font-weight: normal;
}
.dd3-handle:hover {
background: #ddd;
}/*!
* Nestable jQuery Plugin - Copyright (c) 2012 David Bushell - http://dbushell.com/
* Dual-licensed under the BSD or MIT licenses
*/
;
(function($, window, document, undefined) {
var hasTouch = 'ontouchstart' in document;
/**
* Detect CSS pointer-events property
* events are normally disabled on the dragging element to avoid conflicts
* https://github.com/ausi/Feature-detection-technique-for-pointer-events/blob/master/modernizr-pointerevents.js
*/
var hasPointerEvents = (function() {
var el = document.createElement('div'),
docEl = document.documentElement;
if (!('pointerEvents' in el.style)) {
return false;
}
el.style.pointerEvents = 'auto';
el.style.pointerEvents = 'x';
docEl.appendChild(el);
var supports = window.getComputedStyle && window.getComputedStyle(el, '').pointerEvents === 'auto';
docEl.removeChild(el);
return !!supports;
})();
var defaults = {
listNodeName: 'ol',
itemNodeName: 'li',
rootClass: 'dd',
listClass: 'dd-list',
itemClass: 'dd-item',
dragClass: 'dd-dragel',
handleClass: 'dd-handle',
collapsedClass: 'dd-collapsed',
placeClass: 'dd-placeholder',
noDragClass: 'dd-nodrag',
emptyClass: 'dd-empty',
expandBtnHTML: '<button data-action="expand" type="button">Expand</button>',
collapseBtnHTML: '<button data-action="collapse" type="button">Collapse</button>',
group: 0,
maxDepth: 5,
threshold: 20
};
function Plugin(element, options) {
this.w = $(document);
this.el = $(element);
this.options = $.extend({}, defaults, options);
this.init();
}
Plugin.prototype = {
init: function() {
var list = this;
list.reset();
list.el.data('nestable-group', this.options.group);
list.placeEl = $('<div class="' + list.options.placeClass + '"/>');
$.each(this.el.find(list.options.itemNodeName), function(k, el) {
list.setParent($(el));
});
list.el.on('click', 'button', function(e) {
if (list.dragEl) {
return;
}
var target = $(e.currentTarget),
action = target.data('action'),
item = target.parent(list.options.itemNodeName);
if (action === 'collapse') {
list.collapseItem(item);
}
if (action === 'expand') {
list.expandItem(item);
}
});
var onStartEvent = function(e) {
var handle = $(e.target);
if (!handle.hasClass(list.options.handleClass)) {
if (handle.closest('.' + list.options.noDragClass).length) {
return;
}
handle = handle.closest('.' + list.options.handleClass);
}
if (!handle.length || list.dragEl) {
return;
}
list.isTouch = /^touch/.test(e.type);
if (list.isTouch && e.touches.length !== 1) {
return;
}
e.preventDefault();
list.dragStart(e.touches ? e.touches[0] : e);
};
var onMoveEvent = function(e) {
if (list.dragEl) {
e.preventDefault();
list.dragMove(e.touches ? e.touches[0] : e);
}
};
var onEndEvent = function(e) {
if (list.dragEl) {
e.preventDefault();
list.dragStop(e.touches ? e.touches[0] : e);
}
};
if (hasTouch) {
list.el[0].addEventListener('touchstart', onStartEvent, false);
window.addEventListener('touchmove', onMoveEvent, false);
window.addEventListener('touchend', onEndEvent, false);
window.addEventListener('touchcancel', onEndEvent, false);
}
list.el.on('mousedown', onStartEvent);
list.w.on('mousemove', onMoveEvent);
list.w.on('mouseup', onEndEvent);
},
serialize: function() {
var data,
depth = 0,
list = this;
step = function(level, depth) {
var array = [],
items = level.children(list.options.itemNodeName);
items.each(function() {
var li = $(this),
item = $.extend({}, li.data()),
sub = li.children(list.options.listNodeName);
if (sub.length) {
item.children = step(sub, depth + 1);
}
array.push(item);
});
return array;
};
data = step(list.el.find(list.options.listNodeName).first(), depth);
return data;
},
serialise: function() {
return this.serialize();
},
reset: function() {
this.mouse = {
offsetX: 0,
offsetY: 0,
startX: 0,
startY: 0,
lastX: 0,
lastY: 0,
nowX: 0,
nowY: 0,
distX: 0,
distY: 0,
dirAx: 0,
dirX: 0,
dirY: 0,
lastDirX: 0,
lastDirY: 0,
distAxX: 0,
distAxY: 0
};
this.isTouch = false;
this.moving = false;
this.dragEl = null;
this.dragRootEl = null;
this.dragDepth = 0;
this.hasNewRoot = false;
this.pointEl = null;
},
expandItem: function(li) {
li.removeClass(this.options.collapsedClass);
li.children('[data-action="expand"]').hide();
li.children('[data-action="collapse"]').show();
li.children(this.options.listNodeName).show();
},
collapseItem: function(li) {
var lists = li.children(this.options.listNodeName);
if (lists.length) {
li.addClass(this.options.collapsedClass);
li.children('[data-action="collapse"]').hide();
li.children('[data-action="expand"]').show();
li.children(this.options.listNodeName).hide();
}
},
expandAll: function() {
var list = this;
list.el.find(list.options.itemNodeName).each(function() {
list.expandItem($(this));
});
},
collapseAll: function() {
var list = this;
list.el.find(list.options.itemNodeName).each(function() {
list.collapseItem($(this));
});
},
setParent: function(li) {
if (li.children(this.options.listNodeName).length) {
li.prepend($(this.options.expandBtnHTML));
li.prepend($(this.options.collapseBtnHTML));
}
li.children('[data-action="expand"]').hide();
},
unsetParent: function(li) {
li.removeClass(this.options.collapsedClass);
li.children('[data-action]').remove();
li.children(this.options.listNodeName).remove();
},
dragStart: function(e) {
var mouse = this.mouse,
target = $(e.target),
dragItem = target.closest(this.options.itemNodeName);
this.placeEl.css('height', dragItem.height());
mouse.offsetX = e.offsetX !== undefined ? e.offsetX : e.pageX - target.offset().left;
mouse.offsetY = e.offsetY !== undefined ? e.offsetY : e.pageY - target.offset().top;
mouse.startX = mouse.lastX = e.pageX;
mouse.startY = mouse.lastY = e.pageY;
this.dragRootEl = this.el;
this.dragEl = $(document.createElement(this.options.listNodeName)).addClass(this.options.listClass + ' ' + this.options.dragClass);
this.dragEl.css('width', dragItem.width());
dragItem.after(this.placeEl);
dragItem[0].parentNode.removeChild(dragItem[0]);
dragItem.appendTo(this.dragEl);
$(document.body).append(this.dragEl);
this.dragEl.css({
'left': e.pageX - mouse.offsetX,
'top': e.pageY - mouse.offsetY
});
// total depth of dragging item
var i, depth,
items = this.dragEl.find(this.options.itemNodeName);
for (i = 0; i < items.length; i++) {
depth = $(items[i]).parents(this.options.listNodeName).length;
if (depth > this.dragDepth) {
this.dragDepth = depth;
}
}
},
dragStop: function(e) {
var el = this.dragEl.children(this.options.itemNodeName).first();
el[0].parentNode.removeChild(el[0]);
this.placeEl.replaceWith(el);
this.dragEl.remove();
this.el.trigger('change');
if (this.hasNewRoot) {
this.dragRootEl.trigger('change');
}
this.reset();
},
dragMove: function(e) {
var list, parent, prev, next, depth,
opt = this.options,
mouse = this.mouse;
this.dragEl.css({
'left': e.pageX - mouse.offsetX,
'top': e.pageY - mouse.offsetY
});
// mouse position last events
mouse.lastX = mouse.nowX;
mouse.lastY = mouse.nowY;
// mouse position this events
mouse.nowX = e.pageX;
mouse.nowY = e.pageY;
// distance mouse moved between events
mouse.distX = mouse.nowX - mouse.lastX;
mouse.distY = mouse.nowY - mouse.lastY;
// direction mouse was moving
mouse.lastDirX = mouse.dirX;
mouse.lastDirY = mouse.dirY;
// direction mouse is now moving (on both axis)
mouse.dirX = mouse.distX === 0 ? 0 : mouse.distX > 0 ? 1 : -1;
mouse.dirY = mouse.distY === 0 ? 0 : mouse.distY > 0 ? 1 : -1;
// axis mouse is now moving on
var newAx = Math.abs(mouse.distX) > Math.abs(mouse.distY) ? 1 : 0;
// do nothing on first move
if (!mouse.moving) {
mouse.dirAx = newAx;
mouse.moving = true;
return;
}
// calc distance moved on this axis (and direction)
if (mouse.dirAx !== newAx) {
mouse.distAxX = 0;
mouse.distAxY = 0;
} else {
mouse.distAxX += Math.abs(mouse.distX);
if (mouse.dirX !== 0 && mouse.dirX !== mouse.lastDirX) {
mouse.distAxX = 0;
}
mouse.distAxY += Math.abs(mouse.distY);
if (mouse.dirY !== 0 && mouse.dirY !== mouse.lastDirY) {
mouse.distAxY = 0;
}
}
mouse.dirAx = newAx;
/**
* move horizontal
*/
if (mouse.dirAx && mouse.distAxX >= opt.threshold) {
// reset move distance on x-axis for new phase
mouse.distAxX = 0;
prev = this.placeEl.prev(opt.itemNodeName);
// increase horizontal level if previous sibling exists and is not collapsed
if (mouse.distX > 0 && prev.length && !prev.hasClass(opt.collapsedClass)) {
// cannot increase level when item above is collapsed
list = prev.find(opt.listNodeName).last();
// check if depth limit has reached
depth = this.placeEl.parents(opt.listNodeName).length;
if (depth + this.dragDepth <= opt.maxDepth) {
// create new sub-level if one doesn't exist
if (!list.length) {
list = $('<' + opt.listNodeName + '/>').addClass(opt.listClass);
list.append(this.placeEl);
prev.append(list);
this.setParent(prev);
} else {
// else append to next level up
list = prev.children(opt.listNodeName).last();
list.append(this.placeEl);
}
}
}
// decrease horizontal level
if (mouse.distX < 0) {
// we can't decrease a level if an item preceeds the current one
next = this.placeEl.next(opt.itemNodeName);
if (!next.length) {
parent = this.placeEl.parent();
this.placeEl.closest(opt.itemNodeName).after(this.placeEl);
if (!parent.children().length) {
this.unsetParent(parent.parent());
}
}
}
}
var isEmpty = false;
// find list item under cursor
if (!hasPointerEvents) {
this.dragEl[0].style.visibility = 'hidden';
}
this.pointEl = $(document.elementFromPoint(e.pageX - document.body.scrollLeft, e.pageY - (window.pageYOffset || document.documentElement.scrollTop)));
if (!hasPointerEvents) {
this.dragEl[0].style.visibility = 'visible';
}
if (this.pointEl.hasClass(opt.handleClass)) {
this.pointEl = this.pointEl.parent(opt.itemNodeName);
}
if (this.pointEl.hasClass(opt.emptyClass)) {
isEmpty = true;
} else if (!this.pointEl.length || !this.pointEl.hasClass(opt.itemClass)) {
return;
}
// find parent list of item under cursor
var pointElRoot = this.pointEl.closest('.' + opt.rootClass),
isNewRoot = this.dragRootEl.data('nestable-id') !== pointElRoot.data('nestable-id');
/**
* move vertical
*/
if (!mouse.dirAx || isNewRoot || isEmpty) {
// check if groups match if dragging over new root
if (isNewRoot && opt.group !== pointElRoot.data('nestable-group')) {
return;
}
// check depth limit
depth = this.dragDepth - 1 + this.pointEl.parents(opt.listNodeName).length;
if (depth > opt.maxDepth) {
return;
}
var before = e.pageY < (this.pointEl.offset().top + this.pointEl.height() / 2);
parent = this.placeEl.parent();
// if empty create new list to replace empty placeholder
if (isEmpty) {
list = $(document.createElement(opt.listNodeName)).addClass(opt.listClass);
list.append(this.placeEl);
this.pointEl.replaceWith(list);
} else if (before) {
this.pointEl.before(this.placeEl);
} else {
this.pointEl.after(this.placeEl);
}
if (!parent.children().length) {
this.unsetParent(parent.parent());
}
if (!this.dragRootEl.find(opt.itemNodeName).length) {
this.dragRootEl.append('<div class="' + opt.emptyClass + '"/>');
}
// parent root list has changed
if (isNewRoot) {
this.dragRootEl = pointElRoot;
this.hasNewRoot = this.el[0] !== this.dragRootEl[0];
}
}
}
};
$.fn.nestable = function(params) {
var lists = this,
retval = this;
lists.each(function() {
var plugin = $(this).data("nestable");
if (!plugin) {
$(this).data("nestable", new Plugin(this, params));
$(this).data("nestable-id", new Date().getTime());
} else {
if (typeof params === 'string' && typeof plugin[params] === 'function') {
retval = plugin[params]();
}
}
});
return retval || lists;
};
})(window.jQuery, window, document);
// activate Nestable for list 1
$('#nestable').nestable({
group: 1
});
External CSS
This Pen doesn't use any external CSS resources.