jquery.nestable.js
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/*!
* Nestable jQuery Plugin - Copyright (c) 2012 David Bushell - http://dbushell.com/
* Dual-licensed under the BSD or MIT licenses
*/
var jQuery = require("jquery");
;(function($, window, document, undefined)
{
var hasTouch = 'ontouchstart' in window;
/**
* 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 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 = $(window);
this.el = $(element);
this.options = $.extend({}, defaults, options);
this.init();
}
Plugin.prototype = {
init: function()
{
var list = this;
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 || (!hasTouch && e.button !== 0)) {
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);
}
});
},
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 = $.extend({}, li.data()),
sub = li.children(list.options.listNodeName);
if (sub.length) {
item.children = step(sub, depth + 1);
}
array.push(item);
});
return array;
};
data = step(list.el.find(list.options.listNodeName).first(), depth);
return data;
},
serialise: function()
{
return this.serialize();
},
expandItem: function(li)
{
li.removeClass(this.options.collapsedClass);
li.children('[data-action="expand"]').hide();
li.children('[data-action="collapse"]').show();
li.children(this.options.listNodeName).show();
},
collapseItem: function(li)
{
var lists = li.children(this.options.listNodeName);
if (lists.length) {
li.addClass(this.options.collapsedClass);
li.children('[data-action="collapse"]').hide();
li.children('[data-action="expand"]').show();
li.children(this.options.listNodeName).hide();
}
},
expandAll: function()
{
var list = this;
list.el.find(list.options.itemNodeName).each(function() {
list.expandItem($(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();
},
};
$.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;
};
})(jQuery, window, document);