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Nestable
========
## PLEASE NOTE
**I cannot provide any support or guidance beyond this README. If this code helps you that's great but I have no plans to develop Nestable beyond this demo (it's not a final product and has limited functionality). I cannot reply to any requests for help.**
* * *
### Drag & drop hierarchical list with mouse and touch compatibility (jQuery / Zepto plugin)
[**Try Nestable Demo**](http://dbushell.github.com/Nestable/)
Nestable is an experimental example and not under active development. If it suits your requirements feel free to expand upon it!
## Usage
Write your nested HTML lists like so:
<div class="dd">
<ol class="dd-list">
<li class="dd-item" 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>
</li>
<li class="dd-item" data-id="3">
<div class="dd-handle">Item 3</div>
<ol class="dd-list">
<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>
</li>
</ol>
</li>
</ol>
</div>
Then activate with jQuery like so:
$('.dd').nestable({ /* config options */ });
### Events
The `change` event is fired when items are reordered.
$('.dd').on('change', function() {
/* on change event */
});
### Methods
You can get a serialised object with all `data-*` attributes for each item.
$('.dd').nestable('serialize');
The serialised JSON for the example above would be:
[{"id":1},{"id":2},{"id":3,"children":[{"id":4},{"id":5}]}]
### Configuration
You can change the follow options:
* `maxDepth` number of levels an item can be nested (default `5`)
* `group` group ID to allow dragging between lists (default `0`)
These advanced config options are also available:
* `listNodeName` The HTML element to create for lists (default `'ol'`)
* `itemNodeName` The HTML element to create for list items (default `'li'`)
* `rootClass` The class of the root element `.nestable()` was used on (default `'dd'`)
* `listClass` The class of all list elements (default `'dd-list'`)
* `itemClass` The class of all list item elements (default `'dd-item'`)
* `dragClass` The class applied to the list element that is being dragged (default `'dd-dragel'`)
* `handleClass` The class of the content element inside each list item (default `'dd-handle'`)
* `collapsedClass` The class applied to lists that have been collapsed (default `'dd-collapsed'`)
* `placeClass` The class of the placeholder element (default `'dd-placeholder'`)
* `emptyClass` The class used for empty list placeholder elements (default `'dd-empty'`)
* `expandBtnHTML` The HTML text used to generate a list item expand button (default `'<button data-action="expand">Expand></button>'`)
* `collapseBtnHTML` The HTML text used to generate a list item collapse button (default `'<button data-action="collapse">Collapse</button>'`)
**Inspect the [Nestable Demo](http://dbushell.github.com/Nestable/) for guidance.**
## Change Log
### 15th October 2012
* Merge for Zepto.js support
* Merge fix for remove/detach items
### 27th June 2012
* Added `maxDepth` option (default to 5)
* Added empty placeholder
* Updated CSS class structure with options for `listClass` and `itemClass`.
* Fixed to allow drag and drop between multiple Nestable instances (off by default).
* Added `group` option to enabled the above.
* * *
Author: David Bushell [http://dbushell.com](http://dbushell.com/) [@dbushell](http://twitter.com/dbushell/)
Copyright © 2012 David Bushell | BSD & MIT license

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<!DOCTYPE html>
<!--[if lt IE 7]> <html lang="en" class="lt-ie9 lt-ie8 lt-ie7"> <![endif]-->
<!--[if IE 7]> <html lang="en" class="lt-ie9 lt-ie8"> <![endif]-->
<!--[if IE 8]> <html lang="en" class="lt-ie9"> <![endif]-->
<!--[if IE 9]> <html lang="en" class="ie9"> <![endif]-->
<!--[if gt IE 9]><!--> <html lang="en"> <!--<![endif]-->
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1">
<title>Nestable</title>
<style type="text/css">
.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: -webkit-linear-gradient(top, #fafafa 0%, #eee 100%);
background: -moz-linear-gradient(top, #fafafa 0%, #eee 100%);
background: linear-gradient(top, #fafafa 0%, #eee 100%);
-webkit-border-radius: 3px;
border-radius: 3px;
box-sizing: border-box; -moz-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; -moz-box-sizing: border-box; }
.dd-empty { border: 1px dashed #bbb; min-height: 100px; background-color: #e5e5e5;
background-image: -webkit-linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff),
-webkit-linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff);
background-image: -moz-linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff),
-moz-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 {
-webkit-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; -moz-box-sizing: border-box; }
#nestable2 .dd-handle {
color: #fff;
border: 1px solid #999;
background: #bbb;
background: -webkit-linear-gradient(top, #bbb 0%, #999 100%);
background: -moz-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: -webkit-linear-gradient(top, #fafafa 0%, #eee 100%);
background: -moz-linear-gradient(top, #fafafa 0%, #eee 100%);
background: linear-gradient(top, #fafafa 0%, #eee 100%);
-webkit-border-radius: 3px;
border-radius: 3px;
box-sizing: border-box; -moz-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: -webkit-linear-gradient(top, #ddd 0%, #bbb 100%);
background: -moz-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; }
</style>
</head>
<body>
<menu id="nestable-menu">
<button type="button" data-action="expand-all">Expand All</button>
<button type="button" data-action="collapse-all">Collapse All</button>
</menu>
<div class="cf nestable-lists">
<div class="dd" id="nestable">
<ol class="dd-list">
<li class="dd-item" 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>
<div class="dd" id="nestable2">
<ol class="dd-list">
<li class="dd-item" data-id="13">
<div class="dd-handle">Item 13</div>
</li>
<li class="dd-item" data-id="14">
<div class="dd-handle">Item 14</div>
</li>
<li class="dd-item" data-id="15">
<div class="dd-handle">Item 15</div>
<ol class="dd-list">
<li class="dd-item" data-id="16"><div class="dd-handle">Item 16</div></li>
<li class="dd-item" data-id="17"><div class="dd-handle">Item 17</div></li>
<li class="dd-item" data-id="18"><div class="dd-handle">Item 18</div></li>
</ol>
</li>
</ol>
</div>
</div>
<p><strong>Serialised Output (per list)</strong></p>
<textarea id="nestable-output"></textarea>
<textarea id="nestable2-output"></textarea>
<hr>
<div class="cf nestable-lists">
<p><strong>Draggable Handles</strong></p>
<p>If you're clever with your CSS and markup this can be achieved without any JavaScript changes.</p>
<div class="dd" id="nestable3">
<ol class="dd-list">
<li class="dd-item dd3-item" data-id="13">
<div class="dd-handle dd3-handle">Drag</div><div class="dd3-content">Item 13</div>
</li>
<li class="dd-item dd3-item" data-id="14">
<div class="dd-handle dd3-handle">Drag</div><div class="dd3-content">Item 14</div>
</li>
<li class="dd-item dd3-item" data-id="15">
<div class="dd-handle dd3-handle">Drag</div><div class="dd3-content">Item 15</div>
<ol class="dd-list">
<li class="dd-item dd3-item" data-id="16">
<div class="dd-handle dd3-handle">Drag</div><div class="dd3-content">Item 16</div>
</li>
<li class="dd-item dd3-item" data-id="17">
<div class="dd-handle dd3-handle">Drag</div><div class="dd3-content">Item 17</div>
</li>
<li class="dd-item dd3-item" data-id="18">
<div class="dd-handle dd3-handle">Drag</div><div class="dd3-content">Item 18</div>
</li>
</ol>
</li>
</ol>
</div>
</div>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="jquery.nestable.js"></script>
<script>
$(document).ready(function()
{
var updateOutput = function(e)
{
var list = e.length ? e : $(e.target),
output = list.data('output');
if (window.JSON) {
output.val(window.JSON.stringify(list.nestable('serialize')));//, null, 2));
} else {
output.val('JSON browser support required for this demo.');
}
};
// activate Nestable for list 1
$('#nestable').nestable({
group: 1
})
.on('change', updateOutput);
// activate Nestable for list 2
$('#nestable2').nestable({
group: 1
})
.on('change', updateOutput);
// output initial serialised data
updateOutput($('#nestable').data('output', $('#nestable-output')));
updateOutput($('#nestable2').data('output', $('#nestable2-output')));
$('#nestable-menu').on('click', function(e)
{
var target = $(e.target),
action = target.data('action');
if (action === 'expand-all') {
$('.dd').nestable('expandAll');
}
if (action === 'collapse-all') {
$('.dd').nestable('collapseAll');
}
});
$('#nestable3').nestable();
});
</script>
</body>
</html>

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/*!
* 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.Zepto, window, document);

View File

@@ -0,0 +1,227 @@
/**
* 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-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:700
}
.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;
-moz-box-sizing:border-box
}
.dd-empty {
border:1px dashed #bbb;
min-height:100px;
background-color:#e5e5e5;
background-image:-webkit-linear-gradient(45deg,#fff 25%,transparent 25%,transparent 75%,#fff 75%,#fff),-webkit-linear-gradient(45deg,#fff 25%,transparent 25%,transparent 75%,#fff 75%,#fff);
background-image:-moz-linear-gradient(45deg,#fff 25%,transparent 25%,transparent 75%,#fff 75%,#fff),-moz-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 {
-webkit-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: 0 0 10px;
}
#nestable-output,#nestable2-output {
width:100%;
height:7em;
font-size:.75em;
line-height:1.333333em;
font-family:Consolas,monospace;
padding:5px;
box-sizing:border-box;
-moz-box-sizing:border-box
}
#nestable2 .dd-handle {
color:#fff;
border: 1px solid #999;
background: #aaa;
}
#nestable2 .dd-handle:hover {
background:#bbb
}
#nestable2 .dd-item > button:before {
color:#fff
}
.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:700;
border:1px solid #ccc;
background:#fafafa;
background:-webkit-linear-gradient(top,#fafafa 0%,#eee 100%);
background:-moz-linear-gradient(top,#fafafa 0%,#eee 100%);
background:linear-gradient(top,#fafafa 0%,#eee 100%);
-webkit-border-radius:3px;
border-radius:3px;
box-sizing:border-box;
-moz-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:-webkit-linear-gradient(top,#ddd 0%,#bbb 100%);
background:-moz-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:400
}
.dd3-handle:hover {
background:#ddd
}