diff --git a/Gruntfile.js b/Gruntfile.js
index d4c7714..77f58d4 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -37,7 +37,8 @@ module.exports = function(grunt) {
         copy: {
             dist: {
                 files: {
-                    'dist/gridstack.js': ['src/gridstack.js']
+                    'dist/gridstack.js': ['src/gridstack.js'],
+                    'dist/gridstack.jQueryUI.js': ['src/gridstack.jQueryUI.js'],
                 }
             }
         },
@@ -50,7 +51,9 @@ module.exports = function(grunt) {
             },
             dist: {
                 files: {
-                    'dist/gridstack.min.js': ['src/gridstack.js']
+                    'dist/gridstack.min.js': ['src/gridstack.js'],
+                    'dist/gridstack.jQueryUI.min.js': ['src/gridstack.jQueryUI.js'],
+                    'dist/gridstack.all.js': ['src/gridstack.js', 'src/gridstack.jQueryUI.js']
                 }
             }
         },
diff --git a/README.md b/README.md
index 967be65..bd409d0 100644
--- a/README.md
+++ b/README.md
@@ -23,8 +23,10 @@ Join gridstack.js on Slack: https://gridstackjs.troolee.com
 - [Demo](#demo)
 - [Usage](#usage)
   - [Requirements](#requirements)
+      - [Using gridstack.js with jQuery UI](#using-gridstackjs-with-jquery-ui)
   - [Install](#install)
   - [Basic usage](#basic-usage)
+  - [Migrating to v0.3.0](#migrating-to-v030)
   - [Migrating to v0.2.5](#migrating-to-v025)
   - [API Documentation](#api-documentation)
   - [Questions and Answers](#questions-and-answers)
@@ -45,7 +47,7 @@ Join gridstack.js on Slack: https://gridstackjs.troolee.com
   - [Using AniJS](#using-anijs)
 - [The Team](#the-team)
 - [Changes](#changes)
-      - [v0.2.7-dev (Development Version)](#v027-dev-development-version)
+      - [v0.3.0-dev (Development Version)](#v030-dev-development-version)
       - [v0.2.6 (2016-08-17)](#v026-2016-08-17)
       - [v0.2.5 (2016-03-02)](#v025-2016-03-02)
       - [v0.2.4 (2016-02-15)](#v024-2016-02-15)
@@ -72,13 +74,22 @@ Usage
 
 * [lodash.js](https://lodash.com) (>= 3.5.0, full build)
 * [jQuery](http://jquery.com) (>= 3.1.0)
-* [jQuery UI](http://jqueryui.com) (>= 1.12.0). Minimum required components: Core, Widget, Mouse, Draggable, Resizable
-* (Optional) [jquery-ui-touch-punch](https://github.com/furf/jquery-ui-touch-punch) for touch-based devices support
 
 Note: You can still use [underscore.js](http://underscorejs.org) (>= 1.7.0) instead of lodash.js
 
+#### Using gridstack.js with jQuery UI
+
+* [jQuery UI](http://jqueryui.com) (>= 1.12.0). Minimum required components: Core, Widget, Mouse, Draggable, Resizable
+* (Optional) [jquery-ui-touch-punch](https://github.com/furf/jquery-ui-touch-punch) for touch-based devices support
+
 ## Install
 
+```html
+<link rel="stylesheet" href="gridstack.css" />
+<script src="gridstack.js"></script>
+<script src="gridstack.jQueryUI.js"></script>
+```
+
 * Using CDN:
 
 ```html
@@ -129,6 +140,25 @@ $(function () {
 </script>
 ```
 
+## Migrating to v0.3.0
+
+As of v0.3.0, gridstack introduces a new plugin system. The drag'n'drop functionality has been modified to take advantage of this system. Because of this, and to avoid dependency on core code from jQuery UI, the plugin was functionality was moved to a separate file.
+
+To ensure gridstack continues to work, either include the additional `gridstack.jQueryUI.js` file into your HTML or use `gridstack.all.js`:
+
+```html
+<script src="gridstack.js"></script>
+<script src="gridstack.jQueryUI.js"></script>
+```
+
+or
+
+```html
+<script src="gridstack.all.js"></script>
+```
+
+We're working on implementing support for other drag'n'drop libraries through the new plugin system.
+
 ## Migrating to v0.2.5
 
 As of v0.2.5 all methods and parameters are in camel case to respect [JavaScript Style Guide and Coding Conventions](http://www.w3schools.com/js/js_conventions.asp).
@@ -477,12 +507,13 @@ for help.
 Changes
 =======
 
-#### v0.2.7-dev (Development Version)
+#### v0.3.0-dev (Development Version)
 
 - add oneColumnModeClass option to grid.
 - remove 768px CSS styles, moved to grid-stack-one-column-mode class.
 - add max-width override on grid-stck-one-column-mode ([#462](https://github.com/troolee/gridstack.js/issues/462)).
 - add internal function`isNodeChangedPosition`, minor optimization to move/drag.
+- drag'n'drop plugin system. Move jQuery UI dependencies to separate plugin file.
 
 #### v0.2.6 (2016-08-17)
 
diff --git a/bower.json b/bower.json
index 2e520ca..37e390b 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "gridstack",
-  "version": "0.2.7-dev",
+  "version": "0.3.0-dev",
   "homepage": "https://github.com/troolee/gridstack.js",
   "authors": [
     "Pavel Reznikov <pashka.reznikov@gmail.com>"
diff --git a/demo/anijs.html b/demo/anijs.html
index da92beb..6d66b42 100644
--- a/demo/anijs.html
+++ b/demo/anijs.html
@@ -20,6 +20,7 @@
     <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="../dist/gridstack.js"></script>
+    <script src="../dist/gridstack.jQueryUI.js"></script>
 
     <style type="text/css">
         .grid-stack {
diff --git a/demo/float.html b/demo/float.html
index aa809e3..e1a968d 100644
--- a/demo/float.html
+++ b/demo/float.html
@@ -18,6 +18,7 @@
     <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="../dist/gridstack.js"></script>
+    <script src="../dist/gridstack.jQueryUI.js"></script>
 
     <style type="text/css">
         .grid-stack {
diff --git a/demo/knockout.html b/demo/knockout.html
index 8a2ae19..0c20e19 100644
--- a/demo/knockout.html
+++ b/demo/knockout.html
@@ -19,6 +19,7 @@
     <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.2.0/knockout-min.js"></script>
     <script src="../dist/gridstack.js"></script>
+    <script src="../dist/gridstack.jQueryUI.js"></script>
 
     <style type="text/css">
         .grid-stack {
diff --git a/demo/knockout2.html b/demo/knockout2.html
index f28d7bf..0b3ebee 100644
--- a/demo/knockout2.html
+++ b/demo/knockout2.html
@@ -19,6 +19,7 @@
     <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.2.0/knockout-min.js"></script>
     <script src="../dist/gridstack.js"></script>
+    <script src="../dist/gridstack.jQueryUI.js"></script>
 
     <style type="text/css">
         .grid-stack {
diff --git a/demo/nested.html b/demo/nested.html
index 34d1aa7..4b451e2 100644
--- a/demo/nested.html
+++ b/demo/nested.html
@@ -18,6 +18,7 @@
     <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="../dist/gridstack.js"></script>
+    <script src="../dist/gridstack.jQueryUI.js"></script>
 
     <style type="text/css">
         .grid-stack {
diff --git a/demo/responsive.html b/demo/responsive.html
index 9dff6fe..7f60d2d 100644
--- a/demo/responsive.html
+++ b/demo/responsive.html
@@ -19,6 +19,7 @@
     <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="../dist/gridstack.js"></script>
+    <script src="../dist/gridstack.jQueryUI.js"></script>
 
     <style type="text/css">
         .grid-stack {
diff --git a/demo/rtl.html b/demo/rtl.html
index a460692..0f27daf 100644
--- a/demo/rtl.html
+++ b/demo/rtl.html
@@ -19,6 +19,7 @@
     <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.2.0/knockout-min.js"></script>
     <script src="../dist/gridstack.js"></script>
+    <script src="../dist/gridstack.jQueryUI.js"></script>
 
     <style type="text/css">
         .grid-stack {
diff --git a/demo/serialization.html b/demo/serialization.html
index 539be56..a58e847 100644
--- a/demo/serialization.html
+++ b/demo/serialization.html
@@ -18,6 +18,7 @@
     <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="../dist/gridstack.js"></script>
+    <script src="../dist/gridstack.jQueryUI.js"></script>
 
     <style type="text/css">
         .grid-stack {
diff --git a/demo/two.html b/demo/two.html
index 71eba32..852eab1 100644
--- a/demo/two.html
+++ b/demo/two.html
@@ -19,6 +19,7 @@
     <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="../dist/gridstack.js"></script>
+    <script src="../dist/gridstack.jQueryUI.js"></script>
 
     <style type="text/css">
         #grid1 {
diff --git a/dist/gridstack.all.js b/dist/gridstack.all.js
new file mode 100644
index 0000000..b89e376
--- /dev/null
+++ b/dist/gridstack.all.js
@@ -0,0 +1,39 @@
+/**
+ * gridstack.js 0.3.0-dev
+ * http://troolee.github.io/gridstack.js/
+ * (c) 2014-2016 Pavel Reznikov, Dylan Weiss
+ * gridstack.js may be freely distributed under the MIT license.
+ * @preserve
+*/
+!function(a){if("function"==typeof define&&define.amd)define(["jquery","lodash"],a);else if("undefined"!=typeof exports){try{jQuery=require("jquery")}catch(a){}try{_=require("lodash")}catch(a){}a(jQuery,_)}else a(jQuery,_)}(function(a,b){
+// jscs:enable requireCamelCaseOrUpperCaseIdentifiers
+/**
+    * @class GridStackDragDropPlugin
+    * Base class for drag'n'drop plugin.
+    */
+function c(a){this.grid=a}var d=window,e=function(a,b,c){var d=function(){return console.warn("gridstack.js: Function `"+b+"` is deprecated as of v0.2.5 and has been replaced with `"+c+"`. It will be **completely** removed in v1.0."),a.apply(this,arguments)};return d.prototype=a.prototype,d},f=function(a,b){console.warn("gridstack.js: Option `"+a+"` is deprecated as of v0.2.5 and has been replaced with `"+b+"`. It will be **completely** removed in v1.0.")},g={isIntercepted:function(a,b){return!(a.x+a.width<=b.x||b.x+b.width<=a.x||a.y+a.height<=b.y||b.y+b.height<=a.y)},sort:function(a,c,d){return d=d||b.chain(a).map(function(a){return a.x+a.width}).max().value(),c=c!=-1?1:-1,b.sortBy(a,function(a){return c*(a.x+a.y*d)})},createStylesheet:function(a){var b=document.createElement("style");return b.setAttribute("type","text/css"),b.setAttribute("data-gs-style-id",a),b.styleSheet?b.styleSheet.cssText="":b.appendChild(document.createTextNode("")),document.getElementsByTagName("head")[0].appendChild(b),b.sheet},removeStylesheet:function(b){a("STYLE[data-gs-style-id="+b+"]").remove()},insertCSSRule:function(a,b,c,d){"function"==typeof a.insertRule?a.insertRule(b+"{"+c+"}",d):"function"==typeof a.addRule&&a.addRule(b,c,d)},toBool:function(a){return"boolean"==typeof a?a:"string"==typeof a?(a=a.toLowerCase(),!(""===a||"no"==a||"false"==a||"0"==a)):Boolean(a)},_collisionNodeCheck:function(a){return a!=this.node&&g.isIntercepted(a,this.nn)},_didCollide:function(a){return g.isIntercepted({x:this.n.x,y:this.newY,width:this.n.width,height:this.n.height},a)},_isAddNodeIntercepted:function(a){return g.isIntercepted({x:this.x,y:this.y,width:this.node.width,height:this.node.height},a)},parseHeight:function(a){var c=a,d="px";if(c&&b.isString(c)){var e=c.match(/^(-[0-9]+\.[0-9]+|[0-9]*\.[0-9]+|-[0-9]+|[0-9]+)(px|em|rem|vh|vw)?$/);if(!e)throw new Error("Invalid height");d=e[2]||"px",c=parseFloat(e[1])}return{height:c,unit:d}}};
+// jscs:disable requireCamelCaseOrUpperCaseIdentifiers
+g.is_intercepted=e(g.isIntercepted,"is_intercepted","isIntercepted"),g.create_stylesheet=e(g.createStylesheet,"create_stylesheet","createStylesheet"),g.remove_stylesheet=e(g.removeStylesheet,"remove_stylesheet","removeStylesheet"),g.insert_css_rule=e(g.insertCSSRule,"insert_css_rule","insertCSSRule"),c.registeredPlugins=[],c.registerPlugin=function(a){c.registeredPlugins.push(a)},c.prototype.resizable=function(a,b){return this},c.prototype.draggable=function(a,b){return this},c.prototype.droppable=function(a,b){return this},c.prototype.isDroppable=function(a){return!1},c.prototype.on=function(a,b,c){return this};var h=0,i=function(a,b,c,d,e){this.width=a,this.float=c||!1,this.height=d||0,this.nodes=e||[],this.onchange=b||function(){},this._updateCounter=0,this._float=this.float,this._addedNodes=[],this._removedNodes=[]};i.prototype.batchUpdate=function(){this._updateCounter=1,this.float=!0},i.prototype.commit=function(){0!==this._updateCounter&&(this._updateCounter=0,this.float=this._float,this._packNodes(),this._notify())},
+// For Meteor support: https://github.com/troolee/gridstack.js/pull/272
+i.prototype.getNodeDataByDOMEl=function(a){return b.find(this.nodes,function(b){return a.get(0)===b.el.get(0)})},i.prototype._fixCollisions=function(a){this._sortNodes(-1);var c=a,d=Boolean(b.find(this.nodes,function(a){return a.locked}));for(this.float||d||(c={x:0,y:a.y,width:this.width,height:a.height});;){var e=b.find(this.nodes,b.bind(g._collisionNodeCheck,{node:a,nn:c}));if("undefined"==typeof e)return;this.moveNode(e,e.x,a.y+a.height,e.width,e.height,!0)}},i.prototype.isAreaEmpty=function(a,c,d,e){var f={x:a||0,y:c||0,width:d||1,height:e||1},h=b.find(this.nodes,b.bind(function(a){return g.isIntercepted(a,f)},this));return null===h||"undefined"==typeof h},i.prototype._sortNodes=function(a){this.nodes=g.sort(this.nodes,a,this.width)},i.prototype._packNodes=function(){this._sortNodes(),this.float?b.each(this.nodes,b.bind(function(a,c){if(!a._updating&&"undefined"!=typeof a._origY&&a.y!=a._origY)for(var d=a.y;d>=a._origY;){var e=b.chain(this.nodes).find(b.bind(g._didCollide,{n:a,newY:d})).value();e||(a._dirty=!0,a.y=d),--d}},this)):b.each(this.nodes,b.bind(function(a,c){if(!a.locked)for(;a.y>0;){var d=a.y-1,e=0===c;if(c>0){var f=b.chain(this.nodes).take(c).find(b.bind(g._didCollide,{n:a,newY:d})).value();e="undefined"==typeof f}if(!e)break;a._dirty=a.y!=d,a.y=d}},this))},i.prototype._prepareNode=function(a,c){return a=b.defaults(a||{},{width:1,height:1,x:0,y:0}),a.x=parseInt(""+a.x),a.y=parseInt(""+a.y),a.width=parseInt(""+a.width),a.height=parseInt(""+a.height),a.autoPosition=a.autoPosition||!1,a.noResize=a.noResize||!1,a.noMove=a.noMove||!1,a.width>this.width?a.width=this.width:a.width<1&&(a.width=1),a.height<1&&(a.height=1),a.x<0&&(a.x=0),a.x+a.width>this.width&&(c?a.width=this.width-a.x:a.x=this.width-a.width),a.y<0&&(a.y=0),a},i.prototype._notify=function(){var a=Array.prototype.slice.call(arguments,0);if(a[0]="undefined"==typeof a[0]?[]:[a[0]],a[1]="undefined"==typeof a[1]||a[1],!this._updateCounter){var b=a[0].concat(this.getDirtyNodes());this.onchange(b,a[1])}},i.prototype.cleanNodes=function(){this._updateCounter||b.each(this.nodes,function(a){a._dirty=!1})},i.prototype.getDirtyNodes=function(){return b.filter(this.nodes,function(a){return a._dirty})},i.prototype.addNode=function(a,c){if(a=this._prepareNode(a),"undefined"!=typeof a.maxWidth&&(a.width=Math.min(a.width,a.maxWidth)),"undefined"!=typeof a.maxHeight&&(a.height=Math.min(a.height,a.maxHeight)),"undefined"!=typeof a.minWidth&&(a.width=Math.max(a.width,a.minWidth)),"undefined"!=typeof a.minHeight&&(a.height=Math.max(a.height,a.minHeight)),a._id=++h,a._dirty=!0,a.autoPosition){this._sortNodes();for(var d=0;;++d){var e=d%this.width,f=Math.floor(d/this.width);if(!(e+a.width>this.width||b.find(this.nodes,b.bind(g._isAddNodeIntercepted,{x:e,y:f,node:a})))){a.x=e,a.y=f;break}}}return this.nodes.push(a),"undefined"!=typeof c&&c&&this._addedNodes.push(b.clone(a)),this._fixCollisions(a),this._packNodes(),this._notify(),a},i.prototype.removeNode=function(a,c){c="undefined"==typeof c||c,this._removedNodes.push(b.clone(a)),a._id=null,this.nodes=b.without(this.nodes,a),this._packNodes(),this._notify(a,c)},i.prototype.canMoveNode=function(c,d,e,f,g){if(!this.isNodeChangedPosition(c,d,e,f,g))return!1;var h=Boolean(b.find(this.nodes,function(a){return a.locked}));if(!this.height&&!h)return!0;var j,k=new i(this.width,null,this.float,0,b.map(this.nodes,function(b){return b==c?j=a.extend({},b):a.extend({},b)}));if("undefined"==typeof j)return!0;k.moveNode(j,d,e,f,g);var l=!0;return h&&(l&=!Boolean(b.find(k.nodes,function(a){return a!=j&&Boolean(a.locked)&&Boolean(a._dirty)}))),this.height&&(l&=k.getGridHeight()<=this.height),l},i.prototype.canBePlacedWithRespectToHeight=function(c){if(!this.height)return!0;var d=new i(this.width,null,this.float,0,b.map(this.nodes,function(b){return a.extend({},b)}));return d.addNode(c),d.getGridHeight()<=this.height},i.prototype.isNodeChangedPosition=function(a,b,c,d,e){return"number"!=typeof b&&(b=a.x),"number"!=typeof c&&(c=a.y),"number"!=typeof d&&(d=a.width),"number"!=typeof e&&(e=a.height),"undefined"!=typeof a.maxWidth&&(d=Math.min(d,a.maxWidth)),"undefined"!=typeof a.maxHeight&&(e=Math.min(e,a.maxHeight)),"undefined"!=typeof a.minWidth&&(d=Math.max(d,a.minWidth)),"undefined"!=typeof a.minHeight&&(e=Math.max(e,a.minHeight)),a.x!=b||a.y!=c||a.width!=d||a.height!=e},i.prototype.moveNode=function(a,b,c,d,e,f){if(!this.isNodeChangedPosition(a,b,c,d,e))return a;if("number"!=typeof b&&(b=a.x),"number"!=typeof c&&(c=a.y),"number"!=typeof d&&(d=a.width),"number"!=typeof e&&(e=a.height),"undefined"!=typeof a.maxWidth&&(d=Math.min(d,a.maxWidth)),"undefined"!=typeof a.maxHeight&&(e=Math.min(e,a.maxHeight)),"undefined"!=typeof a.minWidth&&(d=Math.max(d,a.minWidth)),"undefined"!=typeof a.minHeight&&(e=Math.max(e,a.minHeight)),a.x==b&&a.y==c&&a.width==d&&a.height==e)return a;var g=a.width!=d;return a._dirty=!0,a.x=b,a.y=c,a.width=d,a.height=e,a=this._prepareNode(a,g),this._fixCollisions(a),f||(this._packNodes(),this._notify()),a},i.prototype.getGridHeight=function(){return b.reduce(this.nodes,function(a,b){return Math.max(a,b.y+b.height)},0)},i.prototype.beginUpdate=function(a){b.each(this.nodes,function(a){a._origY=a.y}),a._updating=!0},i.prototype.endUpdate=function(){b.each(this.nodes,function(a){a._origY=a.y});var a=b.find(this.nodes,function(a){return a._updating});a&&(a._updating=!1)};var j=function(d,e){var g,h,j=this;e=e||{},this.container=a(d),
+// jscs:disable requireCamelCaseOrUpperCaseIdentifiers
+"undefined"!=typeof e.handle_class&&(e.handleClass=e.handle_class,f("handle_class","handleClass")),"undefined"!=typeof e.item_class&&(e.itemClass=e.item_class,f("item_class","itemClass")),"undefined"!=typeof e.placeholder_class&&(e.placeholderClass=e.placeholder_class,f("placeholder_class","placeholderClass")),"undefined"!=typeof e.placeholder_text&&(e.placeholderText=e.placeholder_text,f("placeholder_text","placeholderText")),"undefined"!=typeof e.cell_height&&(e.cellHeight=e.cell_height,f("cell_height","cellHeight")),"undefined"!=typeof e.vertical_margin&&(e.verticalMargin=e.vertical_margin,f("vertical_margin","verticalMargin")),"undefined"!=typeof e.min_width&&(e.minWidth=e.min_width,f("min_width","minWidth")),"undefined"!=typeof e.static_grid&&(e.staticGrid=e.static_grid,f("static_grid","staticGrid")),"undefined"!=typeof e.is_nested&&(e.isNested=e.is_nested,f("is_nested","isNested")),"undefined"!=typeof e.always_show_resize_handle&&(e.alwaysShowResizeHandle=e.always_show_resize_handle,f("always_show_resize_handle","alwaysShowResizeHandle")),
+// jscs:enable requireCamelCaseOrUpperCaseIdentifiers
+e.itemClass=e.itemClass||"grid-stack-item";var k=this.container.closest("."+e.itemClass).length>0;if(this.opts=b.defaults(e||{},{width:parseInt(this.container.attr("data-gs-width"))||12,height:parseInt(this.container.attr("data-gs-height"))||0,itemClass:"grid-stack-item",placeholderClass:"grid-stack-placeholder",placeholderText:"",handle:".grid-stack-item-content",handleClass:null,cellHeight:60,verticalMargin:20,auto:!0,minWidth:768,float:!1,staticGrid:!1,_class:"grid-stack-instance-"+(1e4*Math.random()).toFixed(0),animate:Boolean(this.container.attr("data-gs-animate"))||!1,alwaysShowResizeHandle:e.alwaysShowResizeHandle||!1,resizable:b.defaults(e.resizable||{},{autoHide:!e.alwaysShowResizeHandle,handles:"se"}),draggable:b.defaults(e.draggable||{},{handle:(e.handleClass?"."+e.handleClass:e.handle?e.handle:"")||".grid-stack-item-content",scroll:!1,appendTo:"body"}),disableDrag:e.disableDrag||!1,disableResize:e.disableResize||!1,rtl:"auto",removable:!1,removeTimeout:2e3,verticalMarginUnit:"px",cellHeightUnit:"px",oneColumnModeClass:e.oneColumnModeClass||"grid-stack-one-column-mode",ddPlugin:null}),this.opts.ddPlugin===!1?this.opts.ddPlugin=c:null===this.opts.ddPlugin&&(this.opts.ddPlugin=b.first(c.registeredPlugins)||c),this.dd=new this.opts.ddPlugin(this),"auto"===this.opts.rtl&&(this.opts.rtl="rtl"===this.container.css("direction")),this.opts.rtl&&this.container.addClass("grid-stack-rtl"),this.opts.isNested=k,h="auto"===this.opts.cellHeight,h?j.cellHeight(j.cellWidth(),!0):this.cellHeight(this.opts.cellHeight,!0),this.verticalMargin(this.opts.verticalMargin,!0),this.container.addClass(this.opts._class),this._setStaticClass(),k&&this.container.addClass("grid-stack-nested"),this._initStyles(),this.grid=new i(this.opts.width,function(a,c){c="undefined"==typeof c||c;var d=0;b.each(a,function(a){c&&null===a._id?a.el&&a.el.remove():(a.el.attr("data-gs-x",a.x).attr("data-gs-y",a.y).attr("data-gs-width",a.width).attr("data-gs-height",a.height),d=Math.max(d,a.y+a.height))}),j._updateStyles(d+10)},this.opts.float,this.opts.height),this.opts.auto){var l=[],m=this;this.container.children("."+this.opts.itemClass+":not(."+this.opts.placeholderClass+")").each(function(b,c){c=a(c),l.push({el:c,i:parseInt(c.attr("data-gs-x"))+parseInt(c.attr("data-gs-y"))*m.opts.width})}),b.chain(l).sortBy(function(a){return a.i}).each(function(a){j._prepareElement(a.el)}).value()}if(this.setAnimation(this.opts.animate),this.placeholder=a('<div class="'+this.opts.placeholderClass+" "+this.opts.itemClass+'"><div class="placeholder-content">'+this.opts.placeholderText+"</div></div>").hide(),this._updateContainerHeight(),this._updateHeightsOnResize=b.throttle(function(){j.cellHeight(j.cellWidth(),!1)},100),this.onResizeHandler=function(){if(h&&j._updateHeightsOnResize(),j._isOneColumnMode()){if(g)return;j.container.addClass(j.opts.oneColumnModeClass),g=!0,j.grid._sortNodes(),b.each(j.grid.nodes,function(a){j.container.append(a.el),j.opts.staticGrid||((a.noMove||j.opts.disableDrag)&&j.dd.draggable(a.el,"disable"),(a.noResize||j.opts.disableResize)&&j.dd.resizable(a.el,"disable"),a.el.trigger("resize"))})}else{if(!g)return;if(j.container.removeClass(j.opts.oneColumnModeClass),g=!1,j.opts.staticGrid)return;b.each(j.grid.nodes,function(a){a.noMove||j.opts.disableDrag||j.dd.draggable(a.el,"enable"),a.noResize||j.opts.disableResize||j.dd.resizable(a.el,"enable"),a.el.trigger("resize")})}},a(window).resize(this.onResizeHandler),this.onResizeHandler(),!j.opts.staticGrid&&"string"==typeof j.opts.removable){var n=a(j.opts.removable);this.dd.isDroppable(n)||this.dd.droppable(n,{accept:"."+j.opts.itemClass}),this.dd.on(n,"dropover",function(b,c){var d=a(c.draggable),e=d.data("_gridstack_node");e._grid===j&&j._setupRemovingTimeout(d)}).on(n,"dropout",function(b,c){var d=a(c.draggable),e=d.data("_gridstack_node");e._grid===j&&j._clearRemovingTimeout(d)})}if(!j.opts.staticGrid&&j.opts.acceptWidgets){var o=null,p=function(a,b){var c=o,d=c.data("_gridstack_node"),e=j.getCellFromPixel(b.offset,!0),f=Math.max(0,e.x),g=Math.max(0,e.y);if(d._added){if(!j.grid.canMoveNode(d,f,g))return;j.grid.moveNode(d,f,g),j._updateContainerHeight()}else d._added=!0,d.el=c,d.x=f,d.y=g,j.grid.cleanNodes(),j.grid.beginUpdate(d),j.grid.addNode(d),j.container.append(j.placeholder),j.placeholder.attr("data-gs-x",d.x).attr("data-gs-y",d.y).attr("data-gs-width",d.width).attr("data-gs-height",d.height).show(),d.el=j.placeholder,d._beforeDragX=d.x,d._beforeDragY=d.y,j._updateContainerHeight()};this.dd.droppable(j.container,{accept:function(b){b=a(b);var c=b.data("_gridstack_node");return(!c||c._grid!==j)&&b.is(j.opts.acceptWidgets===!0?".grid-stack-item":j.opts.acceptWidgets)}}).on(j.container,"dropover",function(b,c){var d=(j.container.offset(),a(c.draggable)),e=j.cellWidth(),f=j.cellHeight(),g=d.data("_gridstack_node"),h=g?g.width:Math.ceil(d.outerWidth()/e),i=g?g.height:Math.ceil(d.outerHeight()/f);o=d;var k=j.grid._prepareNode({width:h,height:i,_added:!1,_temporary:!0});d.data("_gridstack_node",k),d.data("_gridstack_node_orig",g),d.on("drag",p)}).on(j.container,"dropout",function(b,c){var d=a(c.draggable);d.unbind("drag",p);var e=d.data("_gridstack_node");e.el=null,j.grid.removeNode(e),j.placeholder.detach(),j._updateContainerHeight(),d.data("_gridstack_node",d.data("_gridstack_node_orig"))}).on(j.container,"drop",function(b,c){j.placeholder.detach();var d=a(c.draggable).data("_gridstack_node");d._grid=j;var e=a(c.draggable).clone(!1);e.data("_gridstack_node",d),a(c.draggable).remove(),d.el=e,j.placeholder.hide(),e.attr("data-gs-x",d.x).attr("data-gs-y",d.y).attr("data-gs-width",d.width).attr("data-gs-height",d.height).addClass(j.opts.itemClass).removeAttr("style").enableSelection().removeData("draggable").removeClass("ui-draggable ui-draggable-dragging ui-draggable-disabled").unbind("drag",p),j.container.append(e),j._prepareElementsByNode(e,d),j._updateContainerHeight(),j._triggerChangeEvent(),j.grid.endUpdate()})}};
+// jscs:disable requireCamelCaseOrUpperCaseIdentifiers
+// jscs:enable requireCamelCaseOrUpperCaseIdentifiers
+return j.prototype._triggerChangeEvent=function(a){var b=this.grid.getDirtyNodes(),c=!1,d=[];b&&b.length&&(d.push(b),c=!0),(c||a===!0)&&this.container.trigger("change",d)},j.prototype._triggerAddEvent=function(){this.grid._addedNodes&&this.grid._addedNodes.length>0&&(this.container.trigger("added",[b.map(this.grid._addedNodes,b.clone)]),this.grid._addedNodes=[])},j.prototype._triggerRemoveEvent=function(){this.grid._removedNodes&&this.grid._removedNodes.length>0&&(this.container.trigger("removed",[b.map(this.grid._removedNodes,b.clone)]),this.grid._removedNodes=[])},j.prototype._initStyles=function(){this._stylesId&&g.removeStylesheet(this._stylesId),this._stylesId="gridstack-style-"+(1e5*Math.random()).toFixed(),this._styles=g.createStylesheet(this._stylesId),null!==this._styles&&(this._styles._max=0)},j.prototype._updateStyles=function(a){if(null!==this._styles&&"undefined"!=typeof this._styles){var b,c="."+this.opts._class+" ."+this.opts.itemClass,d=this;if("undefined"==typeof a&&(a=this._styles._max,this._initStyles(),this._updateContainerHeight()),this.opts.cellHeight&&!(0!==this._styles._max&&a<=this._styles._max)&&(b=this.opts.verticalMargin&&this.opts.cellHeightUnit!==this.opts.verticalMarginUnit?function(a,b){return a&&b?"calc("+(d.opts.cellHeight*a+d.opts.cellHeightUnit)+" + "+(d.opts.verticalMargin*b+d.opts.verticalMarginUnit)+")":d.opts.cellHeight*a+d.opts.verticalMargin*b+d.opts.cellHeightUnit}:function(a,b){return d.opts.cellHeight*a+d.opts.verticalMargin*b+d.opts.cellHeightUnit},0===this._styles._max&&g.insertCSSRule(this._styles,c,"min-height: "+b(1,0)+";",0),a>this._styles._max)){for(var e=this._styles._max;e<a;++e)g.insertCSSRule(this._styles,c+'[data-gs-height="'+(e+1)+'"]',"height: "+b(e+1,e)+";",e),g.insertCSSRule(this._styles,c+'[data-gs-min-height="'+(e+1)+'"]',"min-height: "+b(e+1,e)+";",e),g.insertCSSRule(this._styles,c+'[data-gs-max-height="'+(e+1)+'"]',"max-height: "+b(e+1,e)+";",e),g.insertCSSRule(this._styles,c+'[data-gs-y="'+e+'"]',"top: "+b(e,e)+";",e);this._styles._max=a}}},j.prototype._updateContainerHeight=function(){if(!this.grid._updateCounter){var a=this.grid.getGridHeight();this.container.attr("data-gs-current-height",a),this.opts.cellHeight&&(this.opts.verticalMargin?this.opts.cellHeightUnit===this.opts.verticalMarginUnit?this.container.css("height",a*(this.opts.cellHeight+this.opts.verticalMargin)-this.opts.verticalMargin+this.opts.cellHeightUnit):this.container.css("height","calc("+(a*this.opts.cellHeight+this.opts.cellHeightUnit)+" + "+(a*(this.opts.verticalMargin-1)+this.opts.verticalMarginUnit)+")"):this.container.css("height",a*this.opts.cellHeight+this.opts.cellHeightUnit))}},j.prototype._isOneColumnMode=function(){return(window.innerWidth||document.documentElement.clientWidth||document.body.clientWidth)<=this.opts.minWidth},j.prototype._setupRemovingTimeout=function(b){var c=this,d=a(b).data("_gridstack_node");!d._removeTimeout&&c.opts.removable&&(d._removeTimeout=setTimeout(function(){b.addClass("grid-stack-item-removing"),d._isAboutToRemove=!0},c.opts.removeTimeout))},j.prototype._clearRemovingTimeout=function(b){var c=a(b).data("_gridstack_node");c._removeTimeout&&(clearTimeout(c._removeTimeout),c._removeTimeout=null,b.removeClass("grid-stack-item-removing"),c._isAboutToRemove=!1)},j.prototype._prepareElementsByNode=function(b,c){if("undefined"!=typeof a.ui){var d,e,f=this,g=function(a,g){var h,i,j=Math.round(g.position.left/d),k=Math.floor((g.position.top+e/2)/e);if("drag"!=a.type&&(h=Math.round(g.size.width/d),i=Math.round(g.size.height/e)),"drag"==a.type)j<0||j>=f.grid.width||k<0?(f.opts.removable===!0&&f._setupRemovingTimeout(b),j=c._beforeDragX,k=c._beforeDragY,f.placeholder.detach(),f.placeholder.hide(),f.grid.removeNode(c),f._updateContainerHeight(),c._temporaryRemoved=!0):(f._clearRemovingTimeout(b),c._temporaryRemoved&&(f.grid.addNode(c),f.placeholder.attr("data-gs-x",j).attr("data-gs-y",k).attr("data-gs-width",h).attr("data-gs-height",i).show(),f.container.append(f.placeholder),c.el=f.placeholder,c._temporaryRemoved=!1));else if("resize"==a.type&&j<0)return;f.grid.canMoveNode(c,j,k,h,i)&&(f.grid.moveNode(c,j,k,h,i),f._updateContainerHeight())},h=function(g,h){f.container.append(f.placeholder);var i=a(this);f.grid.cleanNodes(),f.grid.beginUpdate(c),d=f.cellWidth();var j=Math.ceil(i.outerHeight()/i.attr("data-gs-height"));e=f.container.height()/parseInt(f.container.attr("data-gs-current-height")),f.placeholder.attr("data-gs-x",i.attr("data-gs-x")).attr("data-gs-y",i.attr("data-gs-y")).attr("data-gs-width",i.attr("data-gs-width")).attr("data-gs-height",i.attr("data-gs-height")).show(),c.el=f.placeholder,c._beforeDragX=c.x,c._beforeDragY=c.y,f.dd.resizable(b,"option","minWidth",d*(c.minWidth||1)),f.dd.resizable(b,"option","minHeight",j*(c.minHeight||1)),"resizestart"==g.type&&i.find(".grid-stack-item").trigger("resizestart")},i=function(d,e){var g=a(this);if(g.data("_gridstack_node")){var h=!1;f.placeholder.detach(),c.el=g,f.placeholder.hide(),c._isAboutToRemove?(h=!0,b.removeData("_gridstack_node"),b.remove()):(f._clearRemovingTimeout(b),c._temporaryRemoved?(g.attr("data-gs-x",c._beforeDragX).attr("data-gs-y",c._beforeDragY).attr("data-gs-width",c.width).attr("data-gs-height",c.height).removeAttr("style"),c.x=c._beforeDragX,c.y=c._beforeDragY,f.grid.addNode(c)):g.attr("data-gs-x",c.x).attr("data-gs-y",c.y).attr("data-gs-width",c.width).attr("data-gs-height",c.height).removeAttr("style")),f._updateContainerHeight(),f._triggerChangeEvent(h),f.grid.endUpdate();var i=g.find(".grid-stack");i.length&&"resizestop"==d.type&&(i.each(function(b,c){a(c).data("gridstack").onResizeHandler()}),g.find(".grid-stack-item").trigger("resizestop"))}};this.dd.draggable(b,{start:h,stop:i,drag:g}).resizable(b,{start:h,stop:i,resize:g}),(c.noMove||this._isOneColumnMode()||this.opts.disableDrag)&&this.dd.draggable(b,"disable"),(c.noResize||this._isOneColumnMode()||this.opts.disableResize)&&this.dd.resizable(b,"disable"),b.attr("data-gs-locked",c.locked?"yes":null)}},j.prototype._prepareElement=function(b,c){c="undefined"!=typeof c&&c;var d=this;b=a(b),b.addClass(this.opts.itemClass);var e=d.grid.addNode({x:b.attr("data-gs-x"),y:b.attr("data-gs-y"),width:b.attr("data-gs-width"),height:b.attr("data-gs-height"),maxWidth:b.attr("data-gs-max-width"),minWidth:b.attr("data-gs-min-width"),maxHeight:b.attr("data-gs-max-height"),minHeight:b.attr("data-gs-min-height"),autoPosition:g.toBool(b.attr("data-gs-auto-position")),noResize:g.toBool(b.attr("data-gs-no-resize")),noMove:g.toBool(b.attr("data-gs-no-move")),locked:g.toBool(b.attr("data-gs-locked")),el:b,id:b.attr("data-gs-id"),_grid:d},c);b.data("_gridstack_node",e),this._prepareElementsByNode(b,e)},j.prototype.setAnimation=function(a){a?this.container.addClass("grid-stack-animate"):this.container.removeClass("grid-stack-animate")},j.prototype.addWidget=function(b,c,d,e,f,g,h,i,j,k,l){return b=a(b),"undefined"!=typeof c&&b.attr("data-gs-x",c),"undefined"!=typeof d&&b.attr("data-gs-y",d),"undefined"!=typeof e&&b.attr("data-gs-width",e),"undefined"!=typeof f&&b.attr("data-gs-height",f),"undefined"!=typeof g&&b.attr("data-gs-auto-position",g?"yes":null),"undefined"!=typeof h&&b.attr("data-gs-min-width",h),"undefined"!=typeof i&&b.attr("data-gs-max-width",i),"undefined"!=typeof j&&b.attr("data-gs-min-height",j),"undefined"!=typeof k&&b.attr("data-gs-max-height",k),"undefined"!=typeof l&&b.attr("data-gs-id",l),this.container.append(b),this._prepareElement(b,!0),this._triggerAddEvent(),this._updateContainerHeight(),this._triggerChangeEvent(!0),b},j.prototype.makeWidget=function(b){return b=a(b),this._prepareElement(b,!0),this._triggerAddEvent(),this._updateContainerHeight(),this._triggerChangeEvent(!0),b},j.prototype.willItFit=function(a,b,c,d,e){var f={x:a,y:b,width:c,height:d,autoPosition:e};return this.grid.canBePlacedWithRespectToHeight(f)},j.prototype.removeWidget=function(b,c){c="undefined"==typeof c||c,b=a(b);var d=b.data("_gridstack_node");
+// For Meteor support: https://github.com/troolee/gridstack.js/pull/272
+d||(d=this.grid.getNodeDataByDOMEl(b)),this.grid.removeNode(d,c),b.removeData("_gridstack_node"),this._updateContainerHeight(),c&&b.remove(),this._triggerChangeEvent(!0),this._triggerRemoveEvent()},j.prototype.removeAll=function(a){b.each(this.grid.nodes,b.bind(function(b){this.removeWidget(b.el,a)},this)),this.grid.nodes=[],this._updateContainerHeight()},j.prototype.destroy=function(b){a(window).off("resize",this.onResizeHandler),this.disable(),"undefined"==typeof b||b?this.container.remove():(this.removeAll(!1),this.container.removeData("gridstack")),g.removeStylesheet(this._stylesId),this.grid&&(this.grid=null)},j.prototype.resizable=function(b,c){var d=this;return b=a(b),b.each(function(b,e){e=a(e);var f=e.data("_gridstack_node");"undefined"!=typeof f&&null!==f&&"undefined"!=typeof a.ui&&(f.noResize=!c,f.noResize||d._isOneColumnMode()?d.dd.resizable(e,"disable"):d.dd.resizable(e,"enable"))}),this},j.prototype.movable=function(b,c){var d=this;return b=a(b),b.each(function(b,e){e=a(e);var f=e.data("_gridstack_node");"undefined"!=typeof f&&null!==f&&"undefined"!=typeof a.ui&&(f.noMove=!c,f.noMove||d._isOneColumnMode()?(d.dd.draggable(e,"disable"),e.removeClass("ui-draggable-handle")):(d.dd.draggable(e,"enable"),e.addClass("ui-draggable-handle")))}),this},j.prototype.enableMove=function(a,b){this.movable(this.container.children("."+this.opts.itemClass),a),b&&(this.opts.disableDrag=!a)},j.prototype.enableResize=function(a,b){this.resizable(this.container.children("."+this.opts.itemClass),a),b&&(this.opts.disableResize=!a)},j.prototype.disable=function(){this.movable(this.container.children("."+this.opts.itemClass),!1),this.resizable(this.container.children("."+this.opts.itemClass),!1),this.container.trigger("disable")},j.prototype.enable=function(){this.movable(this.container.children("."+this.opts.itemClass),!0),this.resizable(this.container.children("."+this.opts.itemClass),!0),this.container.trigger("enable")},j.prototype.locked=function(b,c){return b=a(b),b.each(function(b,d){d=a(d);var e=d.data("_gridstack_node");"undefined"!=typeof e&&null!==e&&(e.locked=c||!1,d.attr("data-gs-locked",e.locked?"yes":null))}),this},j.prototype.maxHeight=function(b,c){return b=a(b),b.each(function(b,d){d=a(d);var e=d.data("_gridstack_node");"undefined"!=typeof e&&null!==e&&(isNaN(c)||(e.maxHeight=c||!1,d.attr("data-gs-max-height",c)))}),this},j.prototype.minHeight=function(b,c){return b=a(b),b.each(function(b,d){d=a(d);var e=d.data("_gridstack_node");"undefined"!=typeof e&&null!==e&&(isNaN(c)||(e.minHeight=c||!1,d.attr("data-gs-min-height",c)))}),this},j.prototype.maxWidth=function(b,c){return b=a(b),b.each(function(b,d){d=a(d);var e=d.data("_gridstack_node");"undefined"!=typeof e&&null!==e&&(isNaN(c)||(e.maxWidth=c||!1,d.attr("data-gs-max-width",c)))}),this},j.prototype.minWidth=function(b,c){return b=a(b),b.each(function(b,d){d=a(d);var e=d.data("_gridstack_node");"undefined"!=typeof e&&null!==e&&(isNaN(c)||(e.minWidth=c||!1,d.attr("data-gs-min-width",c)))}),this},j.prototype._updateElement=function(b,c){b=a(b).first();var d=b.data("_gridstack_node");if("undefined"!=typeof d&&null!==d){var e=this;e.grid.cleanNodes(),e.grid.beginUpdate(d),c.call(this,b,d),e._updateContainerHeight(),e._triggerChangeEvent(),e.grid.endUpdate()}},j.prototype.resize=function(a,b,c){this._updateElement(a,function(a,d){b=null!==b&&"undefined"!=typeof b?b:d.width,c=null!==c&&"undefined"!=typeof c?c:d.height,this.grid.moveNode(d,d.x,d.y,b,c)})},j.prototype.move=function(a,b,c){this._updateElement(a,function(a,d){b=null!==b&&"undefined"!=typeof b?b:d.x,c=null!==c&&"undefined"!=typeof c?c:d.y,this.grid.moveNode(d,b,c,d.width,d.height)})},j.prototype.update=function(a,b,c,d,e){this._updateElement(a,function(a,f){b=null!==b&&"undefined"!=typeof b?b:f.x,c=null!==c&&"undefined"!=typeof c?c:f.y,d=null!==d&&"undefined"!=typeof d?d:f.width,e=null!==e&&"undefined"!=typeof e?e:f.height,this.grid.moveNode(f,b,c,d,e)})},j.prototype.verticalMargin=function(a,b){if("undefined"==typeof a)return this.opts.verticalMargin;var c=g.parseHeight(a);this.opts.verticalMarginUnit===c.unit&&this.opts.height===c.height||(this.opts.verticalMarginUnit=c.unit,this.opts.verticalMargin=c.height,b||this._updateStyles())},j.prototype.cellHeight=function(a,b){if("undefined"==typeof a){if(this.opts.cellHeight)return this.opts.cellHeight;var c=this.container.children("."+this.opts.itemClass).first();return Math.ceil(c.outerHeight()/c.attr("data-gs-height"))}var d=g.parseHeight(a);this.opts.cellHeightUnit===d.heightUnit&&this.opts.height===d.height||(this.opts.cellHeightUnit=d.unit,this.opts.cellHeight=d.height,b||this._updateStyles())},j.prototype.cellWidth=function(){return Math.round(this.container.outerWidth()/this.opts.width)},j.prototype.getCellFromPixel=function(a,b){var c="undefined"!=typeof b&&b?this.container.offset():this.container.position(),d=a.left-c.left,e=a.top-c.top,f=Math.floor(this.container.width()/this.opts.width),g=Math.floor(this.container.height()/parseInt(this.container.attr("data-gs-current-height")));return{x:Math.floor(d/f),y:Math.floor(e/g)}},j.prototype.batchUpdate=function(){this.grid.batchUpdate()},j.prototype.commit=function(){this.grid.commit(),this._updateContainerHeight()},j.prototype.isAreaEmpty=function(a,b,c,d){return this.grid.isAreaEmpty(a,b,c,d)},j.prototype.setStatic=function(a){this.opts.staticGrid=a===!0,this.enableMove(!a),this.enableResize(!a),this._setStaticClass()},j.prototype._setStaticClass=function(){var a="grid-stack-static";this.opts.staticGrid===!0?this.container.addClass(a):this.container.removeClass(a)},j.prototype._updateNodeWidths=function(a,b){this.grid._sortNodes(),this.grid.batchUpdate();for(var c={},d=0;d<this.grid.nodes.length;d++)c=this.grid.nodes[d],this.update(c.el,Math.round(c.x*b/a),void 0,Math.round(c.width*b/a),void 0);this.grid.commit()},j.prototype.setGridWidth=function(a,b){this.container.removeClass("grid-stack-"+this.opts.width),b!==!0&&this._updateNodeWidths(this.opts.width,a),this.opts.width=a,this.grid.width=a,this.container.addClass("grid-stack-"+a)},i.prototype.batch_update=e(i.prototype.batchUpdate),i.prototype._fix_collisions=e(i.prototype._fixCollisions,"_fix_collisions","_fixCollisions"),i.prototype.is_area_empty=e(i.prototype.isAreaEmpty,"is_area_empty","isAreaEmpty"),i.prototype._sort_nodes=e(i.prototype._sortNodes,"_sort_nodes","_sortNodes"),i.prototype._pack_nodes=e(i.prototype._packNodes,"_pack_nodes","_packNodes"),i.prototype._prepare_node=e(i.prototype._prepareNode,"_prepare_node","_prepareNode"),i.prototype.clean_nodes=e(i.prototype.cleanNodes,"clean_nodes","cleanNodes"),i.prototype.get_dirty_nodes=e(i.prototype.getDirtyNodes,"get_dirty_nodes","getDirtyNodes"),i.prototype.add_node=e(i.prototype.addNode,"add_node","addNode, "),i.prototype.remove_node=e(i.prototype.removeNode,"remove_node","removeNode"),i.prototype.can_move_node=e(i.prototype.canMoveNode,"can_move_node","canMoveNode"),i.prototype.move_node=e(i.prototype.moveNode,"move_node","moveNode"),i.prototype.get_grid_height=e(i.prototype.getGridHeight,"get_grid_height","getGridHeight"),i.prototype.begin_update=e(i.prototype.beginUpdate,"begin_update","beginUpdate"),i.prototype.end_update=e(i.prototype.endUpdate,"end_update","endUpdate"),i.prototype.can_be_placed_with_respect_to_height=e(i.prototype.canBePlacedWithRespectToHeight,"can_be_placed_with_respect_to_height","canBePlacedWithRespectToHeight"),j.prototype._trigger_change_event=e(j.prototype._triggerChangeEvent,"_trigger_change_event","_triggerChangeEvent"),j.prototype._init_styles=e(j.prototype._initStyles,"_init_styles","_initStyles"),j.prototype._update_styles=e(j.prototype._updateStyles,"_update_styles","_updateStyles"),j.prototype._update_container_height=e(j.prototype._updateContainerHeight,"_update_container_height","_updateContainerHeight"),j.prototype._is_one_column_mode=e(j.prototype._isOneColumnMode,"_is_one_column_mode","_isOneColumnMode"),j.prototype._prepare_element=e(j.prototype._prepareElement,"_prepare_element","_prepareElement"),j.prototype.set_animation=e(j.prototype.setAnimation,"set_animation","setAnimation"),j.prototype.add_widget=e(j.prototype.addWidget,"add_widget","addWidget"),j.prototype.make_widget=e(j.prototype.makeWidget,"make_widget","makeWidget"),j.prototype.will_it_fit=e(j.prototype.willItFit,"will_it_fit","willItFit"),j.prototype.remove_widget=e(j.prototype.removeWidget,"remove_widget","removeWidget"),j.prototype.remove_all=e(j.prototype.removeAll,"remove_all","removeAll"),j.prototype.min_height=e(j.prototype.minHeight,"min_height","minHeight"),j.prototype.min_width=e(j.prototype.minWidth,"min_width","minWidth"),j.prototype._update_element=e(j.prototype._updateElement,"_update_element","_updateElement"),j.prototype.cell_height=e(j.prototype.cellHeight,"cell_height","cellHeight"),j.prototype.cell_width=e(j.prototype.cellWidth,"cell_width","cellWidth"),j.prototype.get_cell_from_pixel=e(j.prototype.getCellFromPixel,"get_cell_from_pixel","getCellFromPixel"),j.prototype.batch_update=e(j.prototype.batchUpdate,"batch_update","batchUpdate"),j.prototype.is_area_empty=e(j.prototype.isAreaEmpty,"is_area_empty","isAreaEmpty"),j.prototype.set_static=e(j.prototype.setStatic,"set_static","setStatic"),j.prototype._set_static_class=e(j.prototype._setStaticClass,"_set_static_class","_setStaticClass"),d.GridStackUI=j,d.GridStackUI.Utils=g,d.GridStackUI.Engine=i,d.GridStackUI.GridStackDragDropPlugin=c,a.fn.gridstack=function(b){return this.each(function(){var c=a(this);c.data("gridstack")||c.data("gridstack",new j(this,b))})},d.GridStackUI}),/**
+ * gridstack.js 0.3.0-dev
+ * http://troolee.github.io/gridstack.js/
+ * (c) 2014-2016 Pavel Reznikov, Dylan Weiss
+ * gridstack.js may be freely distributed under the MIT license.
+ * @preserve
+*/
+function(a){if("function"==typeof define&&define.amd)define(["jquery","lodash","gridstack","jquery-ui/data","jquery-ui/disable-selection","jquery-ui/focusable","jquery-ui/form","jquery-ui/ie","jquery-ui/keycode","jquery-ui/labels","jquery-ui/jquery-1-7","jquery-ui/plugin","jquery-ui/safe-active-element","jquery-ui/safe-blur","jquery-ui/scroll-parent","jquery-ui/tabbable","jquery-ui/unique-id","jquery-ui/version","jquery-ui/widget","jquery-ui/widgets/mouse","jquery-ui/widgets/draggable","jquery-ui/widgets/droppable","jquery-ui/widgets/resizable"],a);else if("undefined"!=typeof exports){try{jQuery=require("jquery")}catch(a){}try{_=require("lodash")}catch(a){}try{GridStackUI=require("gridstack")}catch(a){}a(jQuery,_,GridStackUI)}else a(jQuery,_,GridStackUI)}(function(a,b,c){/**
+    * @class JQueryUIGridStackDragDropPlugin
+    * jQuery UI implementation of drag'n'drop gridstack plugin.
+    */
+function d(a){c.GridStackDragDropPlugin.call(this,a)}window;return c.GridStackDragDropPlugin.registerPlugin(d),d.prototype=Object.create(c.GridStackDragDropPlugin.prototype),d.prototype.constructor=d,d.prototype.resizable=function(c,d){if(c=a(c),"disable"===d||"enable"===d)c.resizable(d);else if("option"===d){var e=arguments[2],f=arguments[3];c.resizable(d,e,f)}else c.resizable(b.extend({},this.grid.opts.resizable,{start:d.start||function(){},stop:d.stop||function(){},resize:d.resize||function(){}}));return this},d.prototype.draggable=function(c,d){return c=a(c),"disable"===d||"enable"===d?c.draggable(d):c.draggable(b.extend({},this.grid.opts.draggable,{containment:this.grid.opts.isNested?this.grid.container.parent():null,start:d.start||function(){},stop:d.stop||function(){},drag:d.drag||function(){}})),this},d.prototype.droppable=function(b,c){return b=a(b),"disable"===c||"enable"===c?b.droppable(c):b.droppable({accept:c.accept}),this},d.prototype.isDroppable=function(b,c){return b=a(b),Boolean(b.data("droppable"))},d.prototype.on=function(b,c,d){return a(b).on(c,d),this},d});
+//# sourceMappingURL=gridstack.min.map
\ No newline at end of file
diff --git a/dist/gridstack.jQueryUI.js b/dist/gridstack.jQueryUI.js
new file mode 100644
index 0000000..c5d4936
--- /dev/null
+++ b/dist/gridstack.jQueryUI.js
@@ -0,0 +1,97 @@
+/**
+ * gridstack.js 0.3.0-dev
+ * http://troolee.github.io/gridstack.js/
+ * (c) 2014-2016 Pavel Reznikov, Dylan Weiss
+ * gridstack.js may be freely distributed under the MIT license.
+ * @preserve
+*/
+(function(factory) {
+    if (typeof define === 'function' && define.amd) {
+        define(['jquery', 'lodash', 'gridstack', 'jquery-ui/data', 'jquery-ui/disable-selection', 'jquery-ui/focusable',
+            'jquery-ui/form', 'jquery-ui/ie', 'jquery-ui/keycode', 'jquery-ui/labels', 'jquery-ui/jquery-1-7',
+            'jquery-ui/plugin', 'jquery-ui/safe-active-element', 'jquery-ui/safe-blur', 'jquery-ui/scroll-parent',
+            'jquery-ui/tabbable', 'jquery-ui/unique-id', 'jquery-ui/version', 'jquery-ui/widget',
+            'jquery-ui/widgets/mouse', 'jquery-ui/widgets/draggable', 'jquery-ui/widgets/droppable',
+            'jquery-ui/widgets/resizable'], factory);
+    } else if (typeof exports !== 'undefined') {
+        try { jQuery = require('jquery'); } catch (e) {}
+        try { _ = require('lodash'); } catch (e) {}
+        try { GridStackUI = require('gridstack'); } catch (e) {}
+        factory(jQuery, _, GridStackUI);
+    } else {
+        factory(jQuery, _, GridStackUI);
+    }
+})(function($, _, GridStackUI) {
+
+    var scope = window;
+
+    /**
+    * @class JQueryUIGridStackDragDropPlugin
+    * jQuery UI implementation of drag'n'drop gridstack plugin.
+    */
+    function JQueryUIGridStackDragDropPlugin(grid) {
+        GridStackUI.GridStackDragDropPlugin.call(this, grid);
+    }
+
+    GridStackUI.GridStackDragDropPlugin.registerPlugin(JQueryUIGridStackDragDropPlugin);
+
+    JQueryUIGridStackDragDropPlugin.prototype = Object.create(GridStackUI.GridStackDragDropPlugin.prototype);
+    JQueryUIGridStackDragDropPlugin.prototype.constructor = JQueryUIGridStackDragDropPlugin;
+
+    JQueryUIGridStackDragDropPlugin.prototype.resizable = function(el, opts) {
+        el = $(el);
+        if (opts === 'disable' || opts === 'enable') {
+            el.resizable(opts);
+        } else if (opts === 'option') {
+            var key = arguments[2];
+            var value = arguments[3];
+            el.resizable(opts, key, value);
+        } else {
+            el.resizable(_.extend({}, this.grid.opts.resizable, {
+                start: opts.start || function() {},
+                stop: opts.stop || function() {},
+                resize: opts.resize || function() {}
+            }));
+        }
+        return this;
+    };
+
+    JQueryUIGridStackDragDropPlugin.prototype.draggable = function(el, opts) {
+        el = $(el);
+        if (opts === 'disable' || opts === 'enable') {
+            el.draggable(opts);
+        } else {
+            el.draggable(_.extend({}, this.grid.opts.draggable, {
+                containment: this.grid.opts.isNested ? this.grid.container.parent() : null,
+                start: opts.start || function() {},
+                stop: opts.stop || function() {},
+                drag: opts.drag || function() {}
+            }));
+        }
+        return this;
+    };
+
+    JQueryUIGridStackDragDropPlugin.prototype.droppable = function(el, opts) {
+        el = $(el);
+        if (opts === 'disable' || opts === 'enable') {
+            el.droppable(opts);
+        } else {
+            el.droppable({
+                accept: opts.accept
+            });
+        }
+        return this;
+    };
+
+    JQueryUIGridStackDragDropPlugin.prototype.isDroppable = function(el, opts) {
+        el = $(el);
+        return Boolean(el.data('droppable'));
+    };
+
+    JQueryUIGridStackDragDropPlugin.prototype.on = function(el, eventName, callback) {
+        $(el).on(eventName, callback);
+        return this;
+    };
+
+    return JQueryUIGridStackDragDropPlugin;
+});
diff --git a/dist/gridstack.jQueryUI.min.js b/dist/gridstack.jQueryUI.min.js
new file mode 100644
index 0000000..c8a0250
--- /dev/null
+++ b/dist/gridstack.jQueryUI.min.js
@@ -0,0 +1,13 @@
+/**
+ * gridstack.js 0.3.0-dev
+ * http://troolee.github.io/gridstack.js/
+ * (c) 2014-2016 Pavel Reznikov, Dylan Weiss
+ * gridstack.js may be freely distributed under the MIT license.
+ * @preserve
+*/
+!function(a){if("function"==typeof define&&define.amd)define(["jquery","lodash","gridstack","jquery-ui/data","jquery-ui/disable-selection","jquery-ui/focusable","jquery-ui/form","jquery-ui/ie","jquery-ui/keycode","jquery-ui/labels","jquery-ui/jquery-1-7","jquery-ui/plugin","jquery-ui/safe-active-element","jquery-ui/safe-blur","jquery-ui/scroll-parent","jquery-ui/tabbable","jquery-ui/unique-id","jquery-ui/version","jquery-ui/widget","jquery-ui/widgets/mouse","jquery-ui/widgets/draggable","jquery-ui/widgets/droppable","jquery-ui/widgets/resizable"],a);else if("undefined"!=typeof exports){try{jQuery=require("jquery")}catch(a){}try{_=require("lodash")}catch(a){}try{GridStackUI=require("gridstack")}catch(a){}a(jQuery,_,GridStackUI)}else a(jQuery,_,GridStackUI)}(function(a,b,c){/**
+    * @class JQueryUIGridStackDragDropPlugin
+    * jQuery UI implementation of drag'n'drop gridstack plugin.
+    */
+function d(a){c.GridStackDragDropPlugin.call(this,a)}window;return c.GridStackDragDropPlugin.registerPlugin(d),d.prototype=Object.create(c.GridStackDragDropPlugin.prototype),d.prototype.constructor=d,d.prototype.resizable=function(c,d){if(c=a(c),"disable"===d||"enable"===d)c.resizable(d);else if("option"===d){var e=arguments[2],f=arguments[3];c.resizable(d,e,f)}else c.resizable(b.extend({},this.grid.opts.resizable,{start:d.start||function(){},stop:d.stop||function(){},resize:d.resize||function(){}}));return this},d.prototype.draggable=function(c,d){return c=a(c),"disable"===d||"enable"===d?c.draggable(d):c.draggable(b.extend({},this.grid.opts.draggable,{containment:this.grid.opts.isNested?this.grid.container.parent():null,start:d.start||function(){},stop:d.stop||function(){},drag:d.drag||function(){}})),this},d.prototype.droppable=function(b,c){return b=a(b),"disable"===c||"enable"===c?b.droppable(c):b.droppable({accept:c.accept}),this},d.prototype.isDroppable=function(b,c){return b=a(b),Boolean(b.data("droppable"))},d.prototype.on=function(b,c,d){return a(b).on(c,d),this},d});
+//# sourceMappingURL=gridstack.min.map
\ No newline at end of file
diff --git a/dist/gridstack.js b/dist/gridstack.js
index 6518db1..c8968aa 100644
--- a/dist/gridstack.js
+++ b/dist/gridstack.js
@@ -1,18 +1,13 @@
 /**
- * gridstack.js 0.2.7-dev
+ * gridstack.js 0.3.0-dev
  * http://troolee.github.io/gridstack.js/
- * (c) 2014-2016 Pavel Reznikov
+ * (c) 2014-2016 Pavel Reznikov, Dylan Weiss
  * gridstack.js may be freely distributed under the MIT license.
  * @preserve
 */
 (function(factory) {
     if (typeof define === 'function' && define.amd) {
-        define(['jquery', 'lodash', 'jquery-ui/data', 'jquery-ui/disable-selection', 'jquery-ui/focusable',
-            'jquery-ui/form', 'jquery-ui/ie', 'jquery-ui/keycode', 'jquery-ui/labels', 'jquery-ui/jquery-1-7',
-            'jquery-ui/plugin', 'jquery-ui/safe-active-element', 'jquery-ui/safe-blur', 'jquery-ui/scroll-parent',
-            'jquery-ui/tabbable', 'jquery-ui/unique-id', 'jquery-ui/version', 'jquery-ui/widget',
-            'jquery-ui/widgets/mouse', 'jquery-ui/widgets/draggable', 'jquery-ui/widgets/droppable',
-            'jquery-ui/widgets/resizable'], factory);
+        define(['jquery', 'lodash'], factory);
     } else if (typeof exports !== 'undefined') {
         try { jQuery = require('jquery'); } catch (e) {}
         try { _ = require('lodash'); } catch (e) {}
@@ -124,6 +119,41 @@
     Utils.insert_css_rule = obsolete(Utils.insertCSSRule, 'insert_css_rule', 'insertCSSRule');
     // jscs:enable requireCamelCaseOrUpperCaseIdentifiers
 
+    /**
+    * @class GridStackDragDropPlugin
+    * Base class for drag'n'drop plugin.
+    */
+    function GridStackDragDropPlugin(grid) {
+        this.grid = grid;
+    }
+
+    GridStackDragDropPlugin.registeredPlugins = [];
+
+    GridStackDragDropPlugin.registerPlugin = function(pluginClass) {
+        GridStackDragDropPlugin.registeredPlugins.push(pluginClass);
+    };
+
+    GridStackDragDropPlugin.prototype.resizable = function(el, opts) {
+        return this;
+    };
+
+    GridStackDragDropPlugin.prototype.draggable = function(el, opts) {
+        return this;
+    };
+
+    GridStackDragDropPlugin.prototype.droppable = function(el, opts) {
+        return this;
+    };
+
+    GridStackDragDropPlugin.prototype.isDroppable = function(el) {
+        return false;
+    };
+
+    GridStackDragDropPlugin.prototype.on = function(el, eventName, callback) {
+        return this;
+    };
+
+
     var idSeq = 0;
 
     var GridStackEngine = function(width, onchange, floatMode, height, items) {
@@ -571,9 +601,18 @@
             removeTimeout: 2000,
             verticalMarginUnit: 'px',
             cellHeightUnit: 'px',
-            oneColumnModeClass: opts.oneColumnModeClass || 'grid-stack-one-column-mode'
+            oneColumnModeClass: opts.oneColumnModeClass || 'grid-stack-one-column-mode',
+            ddPlugin: null
         });
 
+        if (this.opts.ddPlugin === false) {
+            this.opts.ddPlugin = GridStackDragDropPlugin;
+        } else if (this.opts.ddPlugin === null) {
+            this.opts.ddPlugin = _.first(GridStackDragDropPlugin.registeredPlugins) || GridStackDragDropPlugin;
+        }
+
+        this.dd = new this.opts.ddPlugin(this);
+
         if (this.opts.rtl === 'auto') {
             this.opts.rtl = this.container.css('direction') === 'rtl';
         }
@@ -670,10 +709,10 @@
                         return;
                     }
                     if (node.noMove || self.opts.disableDrag) {
-                        node.el.draggable('disable');
+                        self.dd.draggable(node.el, 'disable');
                     }
                     if (node.noResize || self.opts.disableResize) {
-                        node.el.resizable('disable');
+                        self.dd.resizable(node.el, 'disable');
                     }
 
                     node.el.trigger('resize');
@@ -692,10 +731,10 @@
 
                 _.each(self.grid.nodes, function(node) {
                     if (!node.noMove && !self.opts.disableDrag) {
-                        node.el.draggable('enable');
+                        self.dd.draggable(node.el, 'enable');
                     }
                     if (!node.noResize && !self.opts.disableResize) {
-                        node.el.resizable('enable');
+                        self.dd.resizable(node.el, 'enable');
                     }
 
                     node.el.trigger('resize');
@@ -708,13 +747,13 @@
 
         if (!self.opts.staticGrid && typeof self.opts.removable === 'string') {
             var trashZone = $(self.opts.removable);
-            if (!trashZone.data('droppable')) {
-                trashZone.droppable({
+            if (!this.dd.isDroppable(trashZone)) {
+                this.dd.droppable(trashZone, {
                     accept: '.' + self.opts.itemClass
                 });
             }
-            trashZone
-                .on('dropover', function(event, ui) {
+            this.dd
+                .on(trashZone, 'dropover', function(event, ui) {
                     var el = $(ui.draggable);
                     var node = el.data('_gridstack_node');
                     if (node._grid !== self) {
@@ -722,7 +761,7 @@
                     }
                     self._setupRemovingTimeout(el);
                 })
-                .on('dropout', function(event, ui) {
+                .on(trashZone, 'dropout', function(event, ui) {
                     var el = $(ui.draggable);
                     var node = el.data('_gridstack_node');
                     if (node._grid !== self) {
@@ -772,16 +811,18 @@
                 }
             };
 
-            $(self.container).droppable({
-                accept: function(el) {
-                    el = $(el);
-                    var node = el.data('_gridstack_node');
-                    if (node && node._grid === self) {
-                        return false;
+            this.dd
+                .droppable(self.container, {
+                    accept: function(el) {
+                        el = $(el);
+                        var node = el.data('_gridstack_node');
+                        if (node && node._grid === self) {
+                            return false;
+                        }
+                        return el.is(self.opts.acceptWidgets === true ? '.grid-stack-item' : self.opts.acceptWidgets);
                     }
-                    return el.is(self.opts.acceptWidgets === true ? '.grid-stack-item' : self.opts.acceptWidgets);
-                },
-                over: function(event, ui) {
+                })
+                .on(self.container, 'dropover', function(event, ui) {
                     var offset = self.container.offset();
                     var el = $(ui.draggable);
                     var cellWidth = self.cellWidth();
@@ -798,8 +839,8 @@
                     el.data('_gridstack_node_orig', origNode);
 
                     el.on('drag', onDrag);
-                },
-                out: function(event, ui) {
+                })
+                .on(self.container, 'dropout', function(event, ui) {
                     var el = $(ui.draggable);
                     el.unbind('drag', onDrag);
                     var node = el.data('_gridstack_node');
@@ -808,8 +849,8 @@
                     self.placeholder.detach();
                     self._updateContainerHeight();
                     el.data('_gridstack_node', el.data('_gridstack_node_orig'));
-                },
-                drop: function(event, ui) {
+                })
+                .on(self.container, 'drop', function(event, ui) {
                     self.placeholder.detach();
 
                     var node = $(ui.draggable).data('_gridstack_node');
@@ -836,8 +877,7 @@
                     self._triggerChangeEvent();
 
                     self.grid.endUpdate();
-                }
-            });
+                });
         }
     };
 
@@ -1081,8 +1121,8 @@
             node._beforeDragX = node.x;
             node._beforeDragY = node.y;
 
-            el.resizable('option', 'minWidth', cellWidth * (node.minWidth || 1));
-            el.resizable('option', 'minHeight', strictCellHeight * (node.minHeight || 1));
+            self.dd.resizable(el, 'option', 'minWidth', cellWidth * (node.minWidth || 1));
+            self.dd.resizable(el, 'option', 'minHeight', strictCellHeight * (node.minHeight || 1));
 
             if (event.type == 'resizestart') {
                 o.find('.grid-stack-item').trigger('resizestart');
@@ -1139,25 +1179,24 @@
             }
         };
 
-        el
-            .draggable(_.extend({}, this.opts.draggable, {
-                containment: this.opts.isNested ? this.container.parent() : null,
+        this.dd
+            .draggable(el, {
                 start: onStartMoving,
                 stop: onEndMoving,
                 drag: dragOrResize
-            }))
-            .resizable(_.extend({}, this.opts.resizable, {
+            })
+            .resizable(el, {
                 start: onStartMoving,
                 stop: onEndMoving,
                 resize: dragOrResize
-            }));
+            });
 
         if (node.noMove || this._isOneColumnMode() || this.opts.disableDrag) {
-            el.draggable('disable');
+            this.dd.draggable(el, 'disable');
         }
 
         if (node.noResize || this._isOneColumnMode() || this.opts.disableResize) {
-            el.resizable('disable');
+            this.dd.resizable(el, 'disable');
         }
 
         el.attr('data-gs-locked', node.locked ? 'yes' : null);
@@ -1291,9 +1330,9 @@
 
             node.noResize = !(val || false);
             if (node.noResize || self._isOneColumnMode()) {
-                el.resizable('disable');
+                self.dd.resizable(el, 'disable');
             } else {
-                el.resizable('enable');
+                self.dd.resizable(el, 'enable');
             }
         });
         return this;
@@ -1311,10 +1350,10 @@
 
             node.noMove = !(val || false);
             if (node.noMove || self._isOneColumnMode()) {
-                el.draggable('disable');
+                self.dd.draggable(el, 'disable');
                 el.removeClass('ui-draggable-handle');
             } else {
-                el.draggable('enable');
+                self.dd.draggable(el, 'enable');
                 el.addClass('ui-draggable-handle');
             }
         });
@@ -1670,6 +1709,7 @@
 
     scope.GridStackUI.Utils = Utils;
     scope.GridStackUI.Engine = GridStackEngine;
+    scope.GridStackUI.GridStackDragDropPlugin = GridStackDragDropPlugin;
 
     $.fn.gridstack = function(opts) {
         return this.each(function() {
diff --git a/dist/gridstack.min.js b/dist/gridstack.min.js
index 13b2313..56aa7b4 100644
--- a/dist/gridstack.min.js
+++ b/dist/gridstack.min.js
@@ -1,20 +1,28 @@
 /**
- * gridstack.js 0.2.7-dev
+ * gridstack.js 0.3.0-dev
  * http://troolee.github.io/gridstack.js/
- * (c) 2014-2016 Pavel Reznikov
+ * (c) 2014-2016 Pavel Reznikov, Dylan Weiss
  * gridstack.js may be freely distributed under the MIT license.
  * @preserve
 */
-!function(a){if("function"==typeof define&&define.amd)define(["jquery","lodash","jquery-ui/data","jquery-ui/disable-selection","jquery-ui/focusable","jquery-ui/form","jquery-ui/ie","jquery-ui/keycode","jquery-ui/labels","jquery-ui/jquery-1-7","jquery-ui/plugin","jquery-ui/safe-active-element","jquery-ui/safe-blur","jquery-ui/scroll-parent","jquery-ui/tabbable","jquery-ui/unique-id","jquery-ui/version","jquery-ui/widget","jquery-ui/widgets/mouse","jquery-ui/widgets/draggable","jquery-ui/widgets/droppable","jquery-ui/widgets/resizable"],a);else if("undefined"!=typeof exports){try{jQuery=require("jquery")}catch(b){}try{_=require("lodash")}catch(b){}a(jQuery,_)}else a(jQuery,_)}(function(a,b){var c=window,d=function(a,b,c){var d=function(){return console.warn("gridstack.js: Function `"+b+"` is deprecated as of v0.2.5 and has been replaced with `"+c+"`. It will be **completely** removed in v1.0."),a.apply(this,arguments)};return d.prototype=a.prototype,d},e=function(a,b){console.warn("gridstack.js: Option `"+a+"` is deprecated as of v0.2.5 and has been replaced with `"+b+"`. It will be **completely** removed in v1.0.")},f={isIntercepted:function(a,b){return!(a.x+a.width<=b.x||b.x+b.width<=a.x||a.y+a.height<=b.y||b.y+b.height<=a.y)},sort:function(a,c,d){return d=d||b.chain(a).map(function(a){return a.x+a.width}).max().value(),c=-1!=c?1:-1,b.sortBy(a,function(a){return c*(a.x+a.y*d)})},createStylesheet:function(a){var b=document.createElement("style");return b.setAttribute("type","text/css"),b.setAttribute("data-gs-style-id",a),b.styleSheet?b.styleSheet.cssText="":b.appendChild(document.createTextNode("")),document.getElementsByTagName("head")[0].appendChild(b),b.sheet},removeStylesheet:function(b){a("STYLE[data-gs-style-id="+b+"]").remove()},insertCSSRule:function(a,b,c,d){"function"==typeof a.insertRule?a.insertRule(b+"{"+c+"}",d):"function"==typeof a.addRule&&a.addRule(b,c,d)},toBool:function(a){return"boolean"==typeof a?a:"string"==typeof a?(a=a.toLowerCase(),!(""===a||"no"==a||"false"==a||"0"==a)):Boolean(a)},_collisionNodeCheck:function(a){return a!=this.node&&f.isIntercepted(a,this.nn)},_didCollide:function(a){return f.isIntercepted({x:this.n.x,y:this.newY,width:this.n.width,height:this.n.height},a)},_isAddNodeIntercepted:function(a){return f.isIntercepted({x:this.x,y:this.y,width:this.node.width,height:this.node.height},a)},parseHeight:function(a){var c=a,d="px";if(c&&b.isString(c)){var e=c.match(/^(-[0-9]+\.[0-9]+|[0-9]*\.[0-9]+|-[0-9]+|[0-9]+)(px|em|rem|vh|vw)?$/);if(!e)throw new Error("Invalid height");d=e[2]||"px",c=parseFloat(e[1])}return{height:c,unit:d}}};
-// jscs:disable requireCamelCaseOrUpperCaseIdentifiers
-f.is_intercepted=d(f.isIntercepted,"is_intercepted","isIntercepted"),f.create_stylesheet=d(f.createStylesheet,"create_stylesheet","createStylesheet"),f.remove_stylesheet=d(f.removeStylesheet,"remove_stylesheet","removeStylesheet"),f.insert_css_rule=d(f.insertCSSRule,"insert_css_rule","insertCSSRule");
+!function(a){if("function"==typeof define&&define.amd)define(["jquery","lodash"],a);else if("undefined"!=typeof exports){try{jQuery=require("jquery")}catch(a){}try{_=require("lodash")}catch(a){}a(jQuery,_)}else a(jQuery,_)}(function(a,b){
 // jscs:enable requireCamelCaseOrUpperCaseIdentifiers
-var g=0,h=function(a,b,c,d,e){this.width=a,this["float"]=c||!1,this.height=d||0,this.nodes=e||[],this.onchange=b||function(){},this._updateCounter=0,this._float=this["float"],this._addedNodes=[],this._removedNodes=[]};h.prototype.batchUpdate=function(){this._updateCounter=1,this["float"]=!0},h.prototype.commit=function(){0!==this._updateCounter&&(this._updateCounter=0,this["float"]=this._float,this._packNodes(),this._notify())},
+/**
+    * @class GridStackDragDropPlugin
+    * Base class for drag'n'drop plugin.
+    */
+function c(a){this.grid=a}var d=window,e=function(a,b,c){var d=function(){return console.warn("gridstack.js: Function `"+b+"` is deprecated as of v0.2.5 and has been replaced with `"+c+"`. It will be **completely** removed in v1.0."),a.apply(this,arguments)};return d.prototype=a.prototype,d},f=function(a,b){console.warn("gridstack.js: Option `"+a+"` is deprecated as of v0.2.5 and has been replaced with `"+b+"`. It will be **completely** removed in v1.0.")},g={isIntercepted:function(a,b){return!(a.x+a.width<=b.x||b.x+b.width<=a.x||a.y+a.height<=b.y||b.y+b.height<=a.y)},sort:function(a,c,d){return d=d||b.chain(a).map(function(a){return a.x+a.width}).max().value(),c=c!=-1?1:-1,b.sortBy(a,function(a){return c*(a.x+a.y*d)})},createStylesheet:function(a){var b=document.createElement("style");return b.setAttribute("type","text/css"),b.setAttribute("data-gs-style-id",a),b.styleSheet?b.styleSheet.cssText="":b.appendChild(document.createTextNode("")),document.getElementsByTagName("head")[0].appendChild(b),b.sheet},removeStylesheet:function(b){a("STYLE[data-gs-style-id="+b+"]").remove()},insertCSSRule:function(a,b,c,d){"function"==typeof a.insertRule?a.insertRule(b+"{"+c+"}",d):"function"==typeof a.addRule&&a.addRule(b,c,d)},toBool:function(a){return"boolean"==typeof a?a:"string"==typeof a?(a=a.toLowerCase(),!(""===a||"no"==a||"false"==a||"0"==a)):Boolean(a)},_collisionNodeCheck:function(a){return a!=this.node&&g.isIntercepted(a,this.nn)},_didCollide:function(a){return g.isIntercepted({x:this.n.x,y:this.newY,width:this.n.width,height:this.n.height},a)},_isAddNodeIntercepted:function(a){return g.isIntercepted({x:this.x,y:this.y,width:this.node.width,height:this.node.height},a)},parseHeight:function(a){var c=a,d="px";if(c&&b.isString(c)){var e=c.match(/^(-[0-9]+\.[0-9]+|[0-9]*\.[0-9]+|-[0-9]+|[0-9]+)(px|em|rem|vh|vw)?$/);if(!e)throw new Error("Invalid height");d=e[2]||"px",c=parseFloat(e[1])}return{height:c,unit:d}}};
+// jscs:disable requireCamelCaseOrUpperCaseIdentifiers
+g.is_intercepted=e(g.isIntercepted,"is_intercepted","isIntercepted"),g.create_stylesheet=e(g.createStylesheet,"create_stylesheet","createStylesheet"),g.remove_stylesheet=e(g.removeStylesheet,"remove_stylesheet","removeStylesheet"),g.insert_css_rule=e(g.insertCSSRule,"insert_css_rule","insertCSSRule"),c.registeredPlugins=[],c.registerPlugin=function(a){c.registeredPlugins.push(a)},c.prototype.resizable=function(a,b){return this},c.prototype.draggable=function(a,b){return this},c.prototype.droppable=function(a,b){return this},c.prototype.isDroppable=function(a){return!1},c.prototype.on=function(a,b,c){return this};var h=0,i=function(a,b,c,d,e){this.width=a,this.float=c||!1,this.height=d||0,this.nodes=e||[],this.onchange=b||function(){},this._updateCounter=0,this._float=this.float,this._addedNodes=[],this._removedNodes=[]};i.prototype.batchUpdate=function(){this._updateCounter=1,this.float=!0},i.prototype.commit=function(){0!==this._updateCounter&&(this._updateCounter=0,this.float=this._float,this._packNodes(),this._notify())},
 // For Meteor support: https://github.com/troolee/gridstack.js/pull/272
-h.prototype.getNodeDataByDOMEl=function(a){return b.find(this.nodes,function(b){return a.get(0)===b.el.get(0)})},h.prototype._fixCollisions=function(a){this._sortNodes(-1);var c=a,d=Boolean(b.find(this.nodes,function(a){return a.locked}));for(this["float"]||d||(c={x:0,y:a.y,width:this.width,height:a.height});;){var e=b.find(this.nodes,b.bind(f._collisionNodeCheck,{node:a,nn:c}));if("undefined"==typeof e)return;this.moveNode(e,e.x,a.y+a.height,e.width,e.height,!0)}},h.prototype.isAreaEmpty=function(a,c,d,e){var g={x:a||0,y:c||0,width:d||1,height:e||1},h=b.find(this.nodes,b.bind(function(a){return f.isIntercepted(a,g)},this));return null===h||"undefined"==typeof h},h.prototype._sortNodes=function(a){this.nodes=f.sort(this.nodes,a,this.width)},h.prototype._packNodes=function(){this._sortNodes(),this["float"]?b.each(this.nodes,b.bind(function(a,c){if(!a._updating&&"undefined"!=typeof a._origY&&a.y!=a._origY)for(var d=a.y;d>=a._origY;){var e=b.chain(this.nodes).find(b.bind(f._didCollide,{n:a,newY:d})).value();e||(a._dirty=!0,a.y=d),--d}},this)):b.each(this.nodes,b.bind(function(a,c){if(!a.locked)for(;a.y>0;){var d=a.y-1,e=0===c;if(c>0){var g=b.chain(this.nodes).take(c).find(b.bind(f._didCollide,{n:a,newY:d})).value();e="undefined"==typeof g}if(!e)break;a._dirty=a.y!=d,a.y=d}},this))},h.prototype._prepareNode=function(a,c){return a=b.defaults(a||{},{width:1,height:1,x:0,y:0}),a.x=parseInt(""+a.x),a.y=parseInt(""+a.y),a.width=parseInt(""+a.width),a.height=parseInt(""+a.height),a.autoPosition=a.autoPosition||!1,a.noResize=a.noResize||!1,a.noMove=a.noMove||!1,a.width>this.width?a.width=this.width:a.width<1&&(a.width=1),a.height<1&&(a.height=1),a.x<0&&(a.x=0),a.x+a.width>this.width&&(c?a.width=this.width-a.x:a.x=this.width-a.width),a.y<0&&(a.y=0),a},h.prototype._notify=function(){var a=Array.prototype.slice.call(arguments,0);if(a[0]="undefined"==typeof a[0]?[]:[a[0]],a[1]="undefined"==typeof a[1]?!0:a[1],!this._updateCounter){var b=a[0].concat(this.getDirtyNodes());this.onchange(b,a[1])}},h.prototype.cleanNodes=function(){this._updateCounter||b.each(this.nodes,function(a){a._dirty=!1})},h.prototype.getDirtyNodes=function(){return b.filter(this.nodes,function(a){return a._dirty})},h.prototype.addNode=function(a,c){if(a=this._prepareNode(a),"undefined"!=typeof a.maxWidth&&(a.width=Math.min(a.width,a.maxWidth)),"undefined"!=typeof a.maxHeight&&(a.height=Math.min(a.height,a.maxHeight)),"undefined"!=typeof a.minWidth&&(a.width=Math.max(a.width,a.minWidth)),"undefined"!=typeof a.minHeight&&(a.height=Math.max(a.height,a.minHeight)),a._id=++g,a._dirty=!0,a.autoPosition){this._sortNodes();for(var d=0;;++d){var e=d%this.width,h=Math.floor(d/this.width);if(!(e+a.width>this.width||b.find(this.nodes,b.bind(f._isAddNodeIntercepted,{x:e,y:h,node:a})))){a.x=e,a.y=h;break}}}return this.nodes.push(a),"undefined"!=typeof c&&c&&this._addedNodes.push(b.clone(a)),this._fixCollisions(a),this._packNodes(),this._notify(),a},h.prototype.removeNode=function(a,c){c="undefined"==typeof c?!0:c,this._removedNodes.push(b.clone(a)),a._id=null,this.nodes=b.without(this.nodes,a),this._packNodes(),this._notify(a,c)},h.prototype.canMoveNode=function(c,d,e,f,g){if(!this.isNodeChangedPosition(c,d,e,f,g))return!1;var i=Boolean(b.find(this.nodes,function(a){return a.locked}));if(!this.height&&!i)return!0;var j,k=new h(this.width,null,this["float"],0,b.map(this.nodes,function(b){return b==c?j=a.extend({},b):a.extend({},b)}));if("undefined"==typeof j)return!0;k.moveNode(j,d,e,f,g);var l=!0;return i&&(l&=!Boolean(b.find(k.nodes,function(a){return a!=j&&Boolean(a.locked)&&Boolean(a._dirty)}))),this.height&&(l&=k.getGridHeight()<=this.height),l},h.prototype.canBePlacedWithRespectToHeight=function(c){if(!this.height)return!0;var d=new h(this.width,null,this["float"],0,b.map(this.nodes,function(b){return a.extend({},b)}));return d.addNode(c),d.getGridHeight()<=this.height},h.prototype.isNodeChangedPosition=function(a,b,c,d,e){return"number"!=typeof b&&(b=a.x),"number"!=typeof c&&(c=a.y),"number"!=typeof d&&(d=a.width),"number"!=typeof e&&(e=a.height),"undefined"!=typeof a.maxWidth&&(d=Math.min(d,a.maxWidth)),"undefined"!=typeof a.maxHeight&&(e=Math.min(e,a.maxHeight)),"undefined"!=typeof a.minWidth&&(d=Math.max(d,a.minWidth)),"undefined"!=typeof a.minHeight&&(e=Math.max(e,a.minHeight)),a.x!=b||a.y!=c||a.width!=d||a.height!=e},h.prototype.moveNode=function(a,b,c,d,e,f){if(!this.isNodeChangedPosition(a,b,c,d,e))return a;if("number"!=typeof b&&(b=a.x),"number"!=typeof c&&(c=a.y),"number"!=typeof d&&(d=a.width),"number"!=typeof e&&(e=a.height),"undefined"!=typeof a.maxWidth&&(d=Math.min(d,a.maxWidth)),"undefined"!=typeof a.maxHeight&&(e=Math.min(e,a.maxHeight)),"undefined"!=typeof a.minWidth&&(d=Math.max(d,a.minWidth)),"undefined"!=typeof a.minHeight&&(e=Math.max(e,a.minHeight)),a.x==b&&a.y==c&&a.width==d&&a.height==e)return a;var g=a.width!=d;return a._dirty=!0,a.x=b,a.y=c,a.width=d,a.height=e,a=this._prepareNode(a,g),this._fixCollisions(a),f||(this._packNodes(),this._notify()),a},h.prototype.getGridHeight=function(){return b.reduce(this.nodes,function(a,b){return Math.max(a,b.y+b.height)},0)},h.prototype.beginUpdate=function(a){b.each(this.nodes,function(a){a._origY=a.y}),a._updating=!0},h.prototype.endUpdate=function(){b.each(this.nodes,function(a){a._origY=a.y});var a=b.find(this.nodes,function(a){return a._updating});a&&(a._updating=!1)};var i=function(c,d){var f,g,i=this;d=d||{},this.container=a(c),"undefined"!=typeof d.handle_class&&(d.handleClass=d.handle_class,e("handle_class","handleClass")),"undefined"!=typeof d.item_class&&(d.itemClass=d.item_class,e("item_class","itemClass")),"undefined"!=typeof d.placeholder_class&&(d.placeholderClass=d.placeholder_class,e("placeholder_class","placeholderClass")),"undefined"!=typeof d.placeholder_text&&(d.placeholderText=d.placeholder_text,e("placeholder_text","placeholderText")),"undefined"!=typeof d.cell_height&&(d.cellHeight=d.cell_height,e("cell_height","cellHeight")),"undefined"!=typeof d.vertical_margin&&(d.verticalMargin=d.vertical_margin,e("vertical_margin","verticalMargin")),"undefined"!=typeof d.min_width&&(d.minWidth=d.min_width,e("min_width","minWidth")),"undefined"!=typeof d.static_grid&&(d.staticGrid=d.static_grid,e("static_grid","staticGrid")),"undefined"!=typeof d.is_nested&&(d.isNested=d.is_nested,e("is_nested","isNested")),"undefined"!=typeof d.always_show_resize_handle&&(d.alwaysShowResizeHandle=d.always_show_resize_handle,e("always_show_resize_handle","alwaysShowResizeHandle")),d.itemClass=d.itemClass||"grid-stack-item";var j=this.container.closest("."+d.itemClass).length>0;if(this.opts=b.defaults(d||{},{width:parseInt(this.container.attr("data-gs-width"))||12,height:parseInt(this.container.attr("data-gs-height"))||0,itemClass:"grid-stack-item",placeholderClass:"grid-stack-placeholder",placeholderText:"",handle:".grid-stack-item-content",handleClass:null,cellHeight:60,verticalMargin:20,auto:!0,minWidth:768,"float":!1,staticGrid:!1,_class:"grid-stack-instance-"+(1e4*Math.random()).toFixed(0),animate:Boolean(this.container.attr("data-gs-animate"))||!1,alwaysShowResizeHandle:d.alwaysShowResizeHandle||!1,resizable:b.defaults(d.resizable||{},{autoHide:!d.alwaysShowResizeHandle,handles:"se"}),draggable:b.defaults(d.draggable||{},{handle:(d.handleClass?"."+d.handleClass:d.handle?d.handle:"")||".grid-stack-item-content",scroll:!1,appendTo:"body"}),disableDrag:d.disableDrag||!1,disableResize:d.disableResize||!1,rtl:"auto",removable:!1,removeTimeout:2e3,verticalMarginUnit:"px",cellHeightUnit:"px",oneColumnModeClass:d.oneColumnModeClass||"grid-stack-one-column-mode"}),"auto"===this.opts.rtl&&(this.opts.rtl="rtl"===this.container.css("direction")),this.opts.rtl&&this.container.addClass("grid-stack-rtl"),this.opts.isNested=j,g="auto"===this.opts.cellHeight,g?i.cellHeight(i.cellWidth(),!0):this.cellHeight(this.opts.cellHeight,!0),this.verticalMargin(this.opts.verticalMargin,!0),this.container.addClass(this.opts._class),this._setStaticClass(),j&&this.container.addClass("grid-stack-nested"),this._initStyles(),this.grid=new h(this.opts.width,function(a,c){c="undefined"==typeof c?!0:c;var d=0;b.each(a,function(a){c&&null===a._id?a.el&&a.el.remove():(a.el.attr("data-gs-x",a.x).attr("data-gs-y",a.y).attr("data-gs-width",a.width).attr("data-gs-height",a.height),d=Math.max(d,a.y+a.height))}),i._updateStyles(d+10)},this.opts["float"],this.opts.height),this.opts.auto){var k=[],l=this;this.container.children("."+this.opts.itemClass+":not(."+this.opts.placeholderClass+")").each(function(b,c){c=a(c),k.push({el:c,i:parseInt(c.attr("data-gs-x"))+parseInt(c.attr("data-gs-y"))*l.opts.width})}),b.chain(k).sortBy(function(a){return a.i}).each(function(a){i._prepareElement(a.el)}).value()}if(this.setAnimation(this.opts.animate),this.placeholder=a('<div class="'+this.opts.placeholderClass+" "+this.opts.itemClass+'"><div class="placeholder-content">'+this.opts.placeholderText+"</div></div>").hide(),this._updateContainerHeight(),this._updateHeightsOnResize=b.throttle(function(){i.cellHeight(i.cellWidth(),!1)},100),this.onResizeHandler=function(){if(g&&i._updateHeightsOnResize(),i._isOneColumnMode()){if(f)return;i.container.addClass(i.opts.oneColumnModeClass),f=!0,i.grid._sortNodes(),b.each(i.grid.nodes,function(a){i.container.append(a.el),i.opts.staticGrid||((a.noMove||i.opts.disableDrag)&&a.el.draggable("disable"),(a.noResize||i.opts.disableResize)&&a.el.resizable("disable"),a.el.trigger("resize"))})}else{if(!f)return;if(i.container.removeClass(i.opts.oneColumnModeClass),f=!1,i.opts.staticGrid)return;b.each(i.grid.nodes,function(a){a.noMove||i.opts.disableDrag||a.el.draggable("enable"),a.noResize||i.opts.disableResize||a.el.resizable("enable"),a.el.trigger("resize")})}},a(window).resize(this.onResizeHandler),this.onResizeHandler(),!i.opts.staticGrid&&"string"==typeof i.opts.removable){var m=a(i.opts.removable);m.data("droppable")||m.droppable({accept:"."+i.opts.itemClass}),m.on("dropover",function(b,c){var d=a(c.draggable),e=d.data("_gridstack_node");e._grid===i&&i._setupRemovingTimeout(d)}).on("dropout",function(b,c){var d=a(c.draggable),e=d.data("_gridstack_node");e._grid===i&&i._clearRemovingTimeout(d)})}if(!i.opts.staticGrid&&i.opts.acceptWidgets){var n=null,o=function(a,b){var c=n,d=c.data("_gridstack_node"),e=i.getCellFromPixel(b.offset,!0),f=Math.max(0,e.x),g=Math.max(0,e.y);if(d._added){if(!i.grid.canMoveNode(d,f,g))return;i.grid.moveNode(d,f,g),i._updateContainerHeight()}else d._added=!0,d.el=c,d.x=f,d.y=g,i.grid.cleanNodes(),i.grid.beginUpdate(d),i.grid.addNode(d),i.container.append(i.placeholder),i.placeholder.attr("data-gs-x",d.x).attr("data-gs-y",d.y).attr("data-gs-width",d.width).attr("data-gs-height",d.height).show(),d.el=i.placeholder,d._beforeDragX=d.x,d._beforeDragY=d.y,i._updateContainerHeight()};a(i.container).droppable({accept:function(b){b=a(b);var c=b.data("_gridstack_node");return c&&c._grid===i?!1:b.is(i.opts.acceptWidgets===!0?".grid-stack-item":i.opts.acceptWidgets)},over:function(b,c){var d=(i.container.offset(),a(c.draggable)),e=i.cellWidth(),f=i.cellHeight(),g=d.data("_gridstack_node"),h=g?g.width:Math.ceil(d.outerWidth()/e),j=g?g.height:Math.ceil(d.outerHeight()/f);n=d;var k=i.grid._prepareNode({width:h,height:j,_added:!1,_temporary:!0});d.data("_gridstack_node",k),d.data("_gridstack_node_orig",g),d.on("drag",o)},out:function(b,c){var d=a(c.draggable);d.unbind("drag",o);var e=d.data("_gridstack_node");e.el=null,i.grid.removeNode(e),i.placeholder.detach(),i._updateContainerHeight(),d.data("_gridstack_node",d.data("_gridstack_node_orig"))},drop:function(b,c){i.placeholder.detach();var d=a(c.draggable).data("_gridstack_node");d._grid=i;var e=a(c.draggable).clone(!1);e.data("_gridstack_node",d),a(c.draggable).remove(),d.el=e,i.placeholder.hide(),e.attr("data-gs-x",d.x).attr("data-gs-y",d.y).attr("data-gs-width",d.width).attr("data-gs-height",d.height).addClass(i.opts.itemClass).removeAttr("style").enableSelection().removeData("draggable").removeClass("ui-draggable ui-draggable-dragging ui-draggable-disabled").unbind("drag",o),i.container.append(e),i._prepareElementsByNode(e,d),i._updateContainerHeight(),i._triggerChangeEvent(),i.grid.endUpdate()}})}};
+i.prototype.getNodeDataByDOMEl=function(a){return b.find(this.nodes,function(b){return a.get(0)===b.el.get(0)})},i.prototype._fixCollisions=function(a){this._sortNodes(-1);var c=a,d=Boolean(b.find(this.nodes,function(a){return a.locked}));for(this.float||d||(c={x:0,y:a.y,width:this.width,height:a.height});;){var e=b.find(this.nodes,b.bind(g._collisionNodeCheck,{node:a,nn:c}));if("undefined"==typeof e)return;this.moveNode(e,e.x,a.y+a.height,e.width,e.height,!0)}},i.prototype.isAreaEmpty=function(a,c,d,e){var f={x:a||0,y:c||0,width:d||1,height:e||1},h=b.find(this.nodes,b.bind(function(a){return g.isIntercepted(a,f)},this));return null===h||"undefined"==typeof h},i.prototype._sortNodes=function(a){this.nodes=g.sort(this.nodes,a,this.width)},i.prototype._packNodes=function(){this._sortNodes(),this.float?b.each(this.nodes,b.bind(function(a,c){if(!a._updating&&"undefined"!=typeof a._origY&&a.y!=a._origY)for(var d=a.y;d>=a._origY;){var e=b.chain(this.nodes).find(b.bind(g._didCollide,{n:a,newY:d})).value();e||(a._dirty=!0,a.y=d),--d}},this)):b.each(this.nodes,b.bind(function(a,c){if(!a.locked)for(;a.y>0;){var d=a.y-1,e=0===c;if(c>0){var f=b.chain(this.nodes).take(c).find(b.bind(g._didCollide,{n:a,newY:d})).value();e="undefined"==typeof f}if(!e)break;a._dirty=a.y!=d,a.y=d}},this))},i.prototype._prepareNode=function(a,c){return a=b.defaults(a||{},{width:1,height:1,x:0,y:0}),a.x=parseInt(""+a.x),a.y=parseInt(""+a.y),a.width=parseInt(""+a.width),a.height=parseInt(""+a.height),a.autoPosition=a.autoPosition||!1,a.noResize=a.noResize||!1,a.noMove=a.noMove||!1,a.width>this.width?a.width=this.width:a.width<1&&(a.width=1),a.height<1&&(a.height=1),a.x<0&&(a.x=0),a.x+a.width>this.width&&(c?a.width=this.width-a.x:a.x=this.width-a.width),a.y<0&&(a.y=0),a},i.prototype._notify=function(){var a=Array.prototype.slice.call(arguments,0);if(a[0]="undefined"==typeof a[0]?[]:[a[0]],a[1]="undefined"==typeof a[1]||a[1],!this._updateCounter){var b=a[0].concat(this.getDirtyNodes());this.onchange(b,a[1])}},i.prototype.cleanNodes=function(){this._updateCounter||b.each(this.nodes,function(a){a._dirty=!1})},i.prototype.getDirtyNodes=function(){return b.filter(this.nodes,function(a){return a._dirty})},i.prototype.addNode=function(a,c){if(a=this._prepareNode(a),"undefined"!=typeof a.maxWidth&&(a.width=Math.min(a.width,a.maxWidth)),"undefined"!=typeof a.maxHeight&&(a.height=Math.min(a.height,a.maxHeight)),"undefined"!=typeof a.minWidth&&(a.width=Math.max(a.width,a.minWidth)),"undefined"!=typeof a.minHeight&&(a.height=Math.max(a.height,a.minHeight)),a._id=++h,a._dirty=!0,a.autoPosition){this._sortNodes();for(var d=0;;++d){var e=d%this.width,f=Math.floor(d/this.width);if(!(e+a.width>this.width||b.find(this.nodes,b.bind(g._isAddNodeIntercepted,{x:e,y:f,node:a})))){a.x=e,a.y=f;break}}}return this.nodes.push(a),"undefined"!=typeof c&&c&&this._addedNodes.push(b.clone(a)),this._fixCollisions(a),this._packNodes(),this._notify(),a},i.prototype.removeNode=function(a,c){c="undefined"==typeof c||c,this._removedNodes.push(b.clone(a)),a._id=null,this.nodes=b.without(this.nodes,a),this._packNodes(),this._notify(a,c)},i.prototype.canMoveNode=function(c,d,e,f,g){if(!this.isNodeChangedPosition(c,d,e,f,g))return!1;var h=Boolean(b.find(this.nodes,function(a){return a.locked}));if(!this.height&&!h)return!0;var j,k=new i(this.width,null,this.float,0,b.map(this.nodes,function(b){return b==c?j=a.extend({},b):a.extend({},b)}));if("undefined"==typeof j)return!0;k.moveNode(j,d,e,f,g);var l=!0;return h&&(l&=!Boolean(b.find(k.nodes,function(a){return a!=j&&Boolean(a.locked)&&Boolean(a._dirty)}))),this.height&&(l&=k.getGridHeight()<=this.height),l},i.prototype.canBePlacedWithRespectToHeight=function(c){if(!this.height)return!0;var d=new i(this.width,null,this.float,0,b.map(this.nodes,function(b){return a.extend({},b)}));return d.addNode(c),d.getGridHeight()<=this.height},i.prototype.isNodeChangedPosition=function(a,b,c,d,e){return"number"!=typeof b&&(b=a.x),"number"!=typeof c&&(c=a.y),"number"!=typeof d&&(d=a.width),"number"!=typeof e&&(e=a.height),"undefined"!=typeof a.maxWidth&&(d=Math.min(d,a.maxWidth)),"undefined"!=typeof a.maxHeight&&(e=Math.min(e,a.maxHeight)),"undefined"!=typeof a.minWidth&&(d=Math.max(d,a.minWidth)),"undefined"!=typeof a.minHeight&&(e=Math.max(e,a.minHeight)),a.x!=b||a.y!=c||a.width!=d||a.height!=e},i.prototype.moveNode=function(a,b,c,d,e,f){if(!this.isNodeChangedPosition(a,b,c,d,e))return a;if("number"!=typeof b&&(b=a.x),"number"!=typeof c&&(c=a.y),"number"!=typeof d&&(d=a.width),"number"!=typeof e&&(e=a.height),"undefined"!=typeof a.maxWidth&&(d=Math.min(d,a.maxWidth)),"undefined"!=typeof a.maxHeight&&(e=Math.min(e,a.maxHeight)),"undefined"!=typeof a.minWidth&&(d=Math.max(d,a.minWidth)),"undefined"!=typeof a.minHeight&&(e=Math.max(e,a.minHeight)),a.x==b&&a.y==c&&a.width==d&&a.height==e)return a;var g=a.width!=d;return a._dirty=!0,a.x=b,a.y=c,a.width=d,a.height=e,a=this._prepareNode(a,g),this._fixCollisions(a),f||(this._packNodes(),this._notify()),a},i.prototype.getGridHeight=function(){return b.reduce(this.nodes,function(a,b){return Math.max(a,b.y+b.height)},0)},i.prototype.beginUpdate=function(a){b.each(this.nodes,function(a){a._origY=a.y}),a._updating=!0},i.prototype.endUpdate=function(){b.each(this.nodes,function(a){a._origY=a.y});var a=b.find(this.nodes,function(a){return a._updating});a&&(a._updating=!1)};var j=function(d,e){var g,h,j=this;e=e||{},this.container=a(d),
+// jscs:disable requireCamelCaseOrUpperCaseIdentifiers
+"undefined"!=typeof e.handle_class&&(e.handleClass=e.handle_class,f("handle_class","handleClass")),"undefined"!=typeof e.item_class&&(e.itemClass=e.item_class,f("item_class","itemClass")),"undefined"!=typeof e.placeholder_class&&(e.placeholderClass=e.placeholder_class,f("placeholder_class","placeholderClass")),"undefined"!=typeof e.placeholder_text&&(e.placeholderText=e.placeholder_text,f("placeholder_text","placeholderText")),"undefined"!=typeof e.cell_height&&(e.cellHeight=e.cell_height,f("cell_height","cellHeight")),"undefined"!=typeof e.vertical_margin&&(e.verticalMargin=e.vertical_margin,f("vertical_margin","verticalMargin")),"undefined"!=typeof e.min_width&&(e.minWidth=e.min_width,f("min_width","minWidth")),"undefined"!=typeof e.static_grid&&(e.staticGrid=e.static_grid,f("static_grid","staticGrid")),"undefined"!=typeof e.is_nested&&(e.isNested=e.is_nested,f("is_nested","isNested")),"undefined"!=typeof e.always_show_resize_handle&&(e.alwaysShowResizeHandle=e.always_show_resize_handle,f("always_show_resize_handle","alwaysShowResizeHandle")),
+// jscs:enable requireCamelCaseOrUpperCaseIdentifiers
+e.itemClass=e.itemClass||"grid-stack-item";var k=this.container.closest("."+e.itemClass).length>0;if(this.opts=b.defaults(e||{},{width:parseInt(this.container.attr("data-gs-width"))||12,height:parseInt(this.container.attr("data-gs-height"))||0,itemClass:"grid-stack-item",placeholderClass:"grid-stack-placeholder",placeholderText:"",handle:".grid-stack-item-content",handleClass:null,cellHeight:60,verticalMargin:20,auto:!0,minWidth:768,float:!1,staticGrid:!1,_class:"grid-stack-instance-"+(1e4*Math.random()).toFixed(0),animate:Boolean(this.container.attr("data-gs-animate"))||!1,alwaysShowResizeHandle:e.alwaysShowResizeHandle||!1,resizable:b.defaults(e.resizable||{},{autoHide:!e.alwaysShowResizeHandle,handles:"se"}),draggable:b.defaults(e.draggable||{},{handle:(e.handleClass?"."+e.handleClass:e.handle?e.handle:"")||".grid-stack-item-content",scroll:!1,appendTo:"body"}),disableDrag:e.disableDrag||!1,disableResize:e.disableResize||!1,rtl:"auto",removable:!1,removeTimeout:2e3,verticalMarginUnit:"px",cellHeightUnit:"px",oneColumnModeClass:e.oneColumnModeClass||"grid-stack-one-column-mode",ddPlugin:null}),this.opts.ddPlugin===!1?this.opts.ddPlugin=c:null===this.opts.ddPlugin&&(this.opts.ddPlugin=b.first(c.registeredPlugins)||c),this.dd=new this.opts.ddPlugin(this),"auto"===this.opts.rtl&&(this.opts.rtl="rtl"===this.container.css("direction")),this.opts.rtl&&this.container.addClass("grid-stack-rtl"),this.opts.isNested=k,h="auto"===this.opts.cellHeight,h?j.cellHeight(j.cellWidth(),!0):this.cellHeight(this.opts.cellHeight,!0),this.verticalMargin(this.opts.verticalMargin,!0),this.container.addClass(this.opts._class),this._setStaticClass(),k&&this.container.addClass("grid-stack-nested"),this._initStyles(),this.grid=new i(this.opts.width,function(a,c){c="undefined"==typeof c||c;var d=0;b.each(a,function(a){c&&null===a._id?a.el&&a.el.remove():(a.el.attr("data-gs-x",a.x).attr("data-gs-y",a.y).attr("data-gs-width",a.width).attr("data-gs-height",a.height),d=Math.max(d,a.y+a.height))}),j._updateStyles(d+10)},this.opts.float,this.opts.height),this.opts.auto){var l=[],m=this;this.container.children("."+this.opts.itemClass+":not(."+this.opts.placeholderClass+")").each(function(b,c){c=a(c),l.push({el:c,i:parseInt(c.attr("data-gs-x"))+parseInt(c.attr("data-gs-y"))*m.opts.width})}),b.chain(l).sortBy(function(a){return a.i}).each(function(a){j._prepareElement(a.el)}).value()}if(this.setAnimation(this.opts.animate),this.placeholder=a('<div class="'+this.opts.placeholderClass+" "+this.opts.itemClass+'"><div class="placeholder-content">'+this.opts.placeholderText+"</div></div>").hide(),this._updateContainerHeight(),this._updateHeightsOnResize=b.throttle(function(){j.cellHeight(j.cellWidth(),!1)},100),this.onResizeHandler=function(){if(h&&j._updateHeightsOnResize(),j._isOneColumnMode()){if(g)return;j.container.addClass(j.opts.oneColumnModeClass),g=!0,j.grid._sortNodes(),b.each(j.grid.nodes,function(a){j.container.append(a.el),j.opts.staticGrid||((a.noMove||j.opts.disableDrag)&&j.dd.draggable(a.el,"disable"),(a.noResize||j.opts.disableResize)&&j.dd.resizable(a.el,"disable"),a.el.trigger("resize"))})}else{if(!g)return;if(j.container.removeClass(j.opts.oneColumnModeClass),g=!1,j.opts.staticGrid)return;b.each(j.grid.nodes,function(a){a.noMove||j.opts.disableDrag||j.dd.draggable(a.el,"enable"),a.noResize||j.opts.disableResize||j.dd.resizable(a.el,"enable"),a.el.trigger("resize")})}},a(window).resize(this.onResizeHandler),this.onResizeHandler(),!j.opts.staticGrid&&"string"==typeof j.opts.removable){var n=a(j.opts.removable);this.dd.isDroppable(n)||this.dd.droppable(n,{accept:"."+j.opts.itemClass}),this.dd.on(n,"dropover",function(b,c){var d=a(c.draggable),e=d.data("_gridstack_node");e._grid===j&&j._setupRemovingTimeout(d)}).on(n,"dropout",function(b,c){var d=a(c.draggable),e=d.data("_gridstack_node");e._grid===j&&j._clearRemovingTimeout(d)})}if(!j.opts.staticGrid&&j.opts.acceptWidgets){var o=null,p=function(a,b){var c=o,d=c.data("_gridstack_node"),e=j.getCellFromPixel(b.offset,!0),f=Math.max(0,e.x),g=Math.max(0,e.y);if(d._added){if(!j.grid.canMoveNode(d,f,g))return;j.grid.moveNode(d,f,g),j._updateContainerHeight()}else d._added=!0,d.el=c,d.x=f,d.y=g,j.grid.cleanNodes(),j.grid.beginUpdate(d),j.grid.addNode(d),j.container.append(j.placeholder),j.placeholder.attr("data-gs-x",d.x).attr("data-gs-y",d.y).attr("data-gs-width",d.width).attr("data-gs-height",d.height).show(),d.el=j.placeholder,d._beforeDragX=d.x,d._beforeDragY=d.y,j._updateContainerHeight()};this.dd.droppable(j.container,{accept:function(b){b=a(b);var c=b.data("_gridstack_node");return(!c||c._grid!==j)&&b.is(j.opts.acceptWidgets===!0?".grid-stack-item":j.opts.acceptWidgets)}}).on(j.container,"dropover",function(b,c){var d=(j.container.offset(),a(c.draggable)),e=j.cellWidth(),f=j.cellHeight(),g=d.data("_gridstack_node"),h=g?g.width:Math.ceil(d.outerWidth()/e),i=g?g.height:Math.ceil(d.outerHeight()/f);o=d;var k=j.grid._prepareNode({width:h,height:i,_added:!1,_temporary:!0});d.data("_gridstack_node",k),d.data("_gridstack_node_orig",g),d.on("drag",p)}).on(j.container,"dropout",function(b,c){var d=a(c.draggable);d.unbind("drag",p);var e=d.data("_gridstack_node");e.el=null,j.grid.removeNode(e),j.placeholder.detach(),j._updateContainerHeight(),d.data("_gridstack_node",d.data("_gridstack_node_orig"))}).on(j.container,"drop",function(b,c){j.placeholder.detach();var d=a(c.draggable).data("_gridstack_node");d._grid=j;var e=a(c.draggable).clone(!1);e.data("_gridstack_node",d),a(c.draggable).remove(),d.el=e,j.placeholder.hide(),e.attr("data-gs-x",d.x).attr("data-gs-y",d.y).attr("data-gs-width",d.width).attr("data-gs-height",d.height).addClass(j.opts.itemClass).removeAttr("style").enableSelection().removeData("draggable").removeClass("ui-draggable ui-draggable-dragging ui-draggable-disabled").unbind("drag",p),j.container.append(e),j._prepareElementsByNode(e,d),j._updateContainerHeight(),j._triggerChangeEvent(),j.grid.endUpdate()})}};
 // jscs:disable requireCamelCaseOrUpperCaseIdentifiers
 // jscs:enable requireCamelCaseOrUpperCaseIdentifiers
-return i.prototype._triggerChangeEvent=function(a){var b=this.grid.getDirtyNodes(),c=!1,d=[];b&&b.length&&(d.push(b),c=!0),(c||a===!0)&&this.container.trigger("change",d)},i.prototype._triggerAddEvent=function(){this.grid._addedNodes&&this.grid._addedNodes.length>0&&(this.container.trigger("added",[b.map(this.grid._addedNodes,b.clone)]),this.grid._addedNodes=[])},i.prototype._triggerRemoveEvent=function(){this.grid._removedNodes&&this.grid._removedNodes.length>0&&(this.container.trigger("removed",[b.map(this.grid._removedNodes,b.clone)]),this.grid._removedNodes=[])},i.prototype._initStyles=function(){this._stylesId&&f.removeStylesheet(this._stylesId),this._stylesId="gridstack-style-"+(1e5*Math.random()).toFixed(),this._styles=f.createStylesheet(this._stylesId),null!==this._styles&&(this._styles._max=0)},i.prototype._updateStyles=function(a){if(null!==this._styles&&"undefined"!=typeof this._styles){var b,c="."+this.opts._class+" ."+this.opts.itemClass,d=this;if("undefined"==typeof a&&(a=this._styles._max,this._initStyles(),this._updateContainerHeight()),this.opts.cellHeight&&!(0!==this._styles._max&&a<=this._styles._max)&&(b=this.opts.verticalMargin&&this.opts.cellHeightUnit!==this.opts.verticalMarginUnit?function(a,b){return a&&b?"calc("+(d.opts.cellHeight*a+d.opts.cellHeightUnit)+" + "+(d.opts.verticalMargin*b+d.opts.verticalMarginUnit)+")":d.opts.cellHeight*a+d.opts.verticalMargin*b+d.opts.cellHeightUnit}:function(a,b){return d.opts.cellHeight*a+d.opts.verticalMargin*b+d.opts.cellHeightUnit},0===this._styles._max&&f.insertCSSRule(this._styles,c,"min-height: "+b(1,0)+";",0),a>this._styles._max)){for(var e=this._styles._max;a>e;++e)f.insertCSSRule(this._styles,c+'[data-gs-height="'+(e+1)+'"]',"height: "+b(e+1,e)+";",e),f.insertCSSRule(this._styles,c+'[data-gs-min-height="'+(e+1)+'"]',"min-height: "+b(e+1,e)+";",e),f.insertCSSRule(this._styles,c+'[data-gs-max-height="'+(e+1)+'"]',"max-height: "+b(e+1,e)+";",e),f.insertCSSRule(this._styles,c+'[data-gs-y="'+e+'"]',"top: "+b(e,e)+";",e);this._styles._max=a}}},i.prototype._updateContainerHeight=function(){if(!this.grid._updateCounter){var a=this.grid.getGridHeight();this.container.attr("data-gs-current-height",a),this.opts.cellHeight&&(this.opts.verticalMargin?this.opts.cellHeightUnit===this.opts.verticalMarginUnit?this.container.css("height",a*(this.opts.cellHeight+this.opts.verticalMargin)-this.opts.verticalMargin+this.opts.cellHeightUnit):this.container.css("height","calc("+(a*this.opts.cellHeight+this.opts.cellHeightUnit)+" + "+(a*(this.opts.verticalMargin-1)+this.opts.verticalMarginUnit)+")"):this.container.css("height",a*this.opts.cellHeight+this.opts.cellHeightUnit))}},i.prototype._isOneColumnMode=function(){return(window.innerWidth||document.documentElement.clientWidth||document.body.clientWidth)<=this.opts.minWidth},i.prototype._setupRemovingTimeout=function(b){var c=this,d=a(b).data("_gridstack_node");!d._removeTimeout&&c.opts.removable&&(d._removeTimeout=setTimeout(function(){b.addClass("grid-stack-item-removing"),d._isAboutToRemove=!0},c.opts.removeTimeout))},i.prototype._clearRemovingTimeout=function(b){var c=a(b).data("_gridstack_node");c._removeTimeout&&(clearTimeout(c._removeTimeout),c._removeTimeout=null,b.removeClass("grid-stack-item-removing"),c._isAboutToRemove=!1)},i.prototype._prepareElementsByNode=function(c,d){if("undefined"!=typeof a.ui){var e,f,g=this,h=function(a,b){var h,i,j=Math.round(b.position.left/e),k=Math.floor((b.position.top+f/2)/f);if("drag"!=a.type&&(h=Math.round(b.size.width/e),i=Math.round(b.size.height/f)),"drag"==a.type)0>j||j>=g.grid.width||0>k?(g.opts.removable===!0&&g._setupRemovingTimeout(c),j=d._beforeDragX,k=d._beforeDragY,g.placeholder.detach(),g.placeholder.hide(),g.grid.removeNode(d),g._updateContainerHeight(),d._temporaryRemoved=!0):(g._clearRemovingTimeout(c),d._temporaryRemoved&&(g.grid.addNode(d),g.placeholder.attr("data-gs-x",j).attr("data-gs-y",k).attr("data-gs-width",h).attr("data-gs-height",i).show(),g.container.append(g.placeholder),d.el=g.placeholder,d._temporaryRemoved=!1));else if("resize"==a.type&&0>j)return;g.grid.canMoveNode(d,j,k,h,i)&&(g.grid.moveNode(d,j,k,h,i),g._updateContainerHeight())},i=function(b,h){g.container.append(g.placeholder);var i=a(this);g.grid.cleanNodes(),g.grid.beginUpdate(d),e=g.cellWidth();var j=Math.ceil(i.outerHeight()/i.attr("data-gs-height"));f=g.container.height()/parseInt(g.container.attr("data-gs-current-height")),g.placeholder.attr("data-gs-x",i.attr("data-gs-x")).attr("data-gs-y",i.attr("data-gs-y")).attr("data-gs-width",i.attr("data-gs-width")).attr("data-gs-height",i.attr("data-gs-height")).show(),d.el=g.placeholder,d._beforeDragX=d.x,d._beforeDragY=d.y,c.resizable("option","minWidth",e*(d.minWidth||1)),c.resizable("option","minHeight",j*(d.minHeight||1)),"resizestart"==b.type&&i.find(".grid-stack-item").trigger("resizestart")},j=function(b,e){var f=a(this);if(f.data("_gridstack_node")){var h=!1;g.placeholder.detach(),d.el=f,g.placeholder.hide(),d._isAboutToRemove?(h=!0,c.removeData("_gridstack_node"),c.remove()):(g._clearRemovingTimeout(c),d._temporaryRemoved?(f.attr("data-gs-x",d._beforeDragX).attr("data-gs-y",d._beforeDragY).attr("data-gs-width",d.width).attr("data-gs-height",d.height).removeAttr("style"),d.x=d._beforeDragX,d.y=d._beforeDragY,g.grid.addNode(d)):f.attr("data-gs-x",d.x).attr("data-gs-y",d.y).attr("data-gs-width",d.width).attr("data-gs-height",d.height).removeAttr("style")),g._updateContainerHeight(),g._triggerChangeEvent(h),g.grid.endUpdate();var i=f.find(".grid-stack");i.length&&"resizestop"==b.type&&(i.each(function(b,c){a(c).data("gridstack").onResizeHandler()}),f.find(".grid-stack-item").trigger("resizestop"))}};c.draggable(b.extend({},this.opts.draggable,{containment:this.opts.isNested?this.container.parent():null,start:i,stop:j,drag:h})).resizable(b.extend({},this.opts.resizable,{start:i,stop:j,resize:h})),(d.noMove||this._isOneColumnMode()||this.opts.disableDrag)&&c.draggable("disable"),(d.noResize||this._isOneColumnMode()||this.opts.disableResize)&&c.resizable("disable"),c.attr("data-gs-locked",d.locked?"yes":null)}},i.prototype._prepareElement=function(b,c){c="undefined"!=typeof c?c:!1;var d=this;b=a(b),b.addClass(this.opts.itemClass);var e=d.grid.addNode({x:b.attr("data-gs-x"),y:b.attr("data-gs-y"),width:b.attr("data-gs-width"),height:b.attr("data-gs-height"),maxWidth:b.attr("data-gs-max-width"),minWidth:b.attr("data-gs-min-width"),maxHeight:b.attr("data-gs-max-height"),minHeight:b.attr("data-gs-min-height"),autoPosition:f.toBool(b.attr("data-gs-auto-position")),noResize:f.toBool(b.attr("data-gs-no-resize")),noMove:f.toBool(b.attr("data-gs-no-move")),locked:f.toBool(b.attr("data-gs-locked")),el:b,id:b.attr("data-gs-id"),_grid:d},c);b.data("_gridstack_node",e),this._prepareElementsByNode(b,e)},i.prototype.setAnimation=function(a){a?this.container.addClass("grid-stack-animate"):this.container.removeClass("grid-stack-animate")},i.prototype.addWidget=function(b,c,d,e,f,g,h,i,j,k,l){return b=a(b),"undefined"!=typeof c&&b.attr("data-gs-x",c),"undefined"!=typeof d&&b.attr("data-gs-y",d),"undefined"!=typeof e&&b.attr("data-gs-width",e),"undefined"!=typeof f&&b.attr("data-gs-height",f),"undefined"!=typeof g&&b.attr("data-gs-auto-position",g?"yes":null),"undefined"!=typeof h&&b.attr("data-gs-min-width",h),"undefined"!=typeof i&&b.attr("data-gs-max-width",i),"undefined"!=typeof j&&b.attr("data-gs-min-height",j),"undefined"!=typeof k&&b.attr("data-gs-max-height",k),"undefined"!=typeof l&&b.attr("data-gs-id",l),this.container.append(b),this._prepareElement(b,!0),this._triggerAddEvent(),this._updateContainerHeight(),this._triggerChangeEvent(!0),b},i.prototype.makeWidget=function(b){return b=a(b),this._prepareElement(b,!0),this._triggerAddEvent(),this._updateContainerHeight(),this._triggerChangeEvent(!0),b},i.prototype.willItFit=function(a,b,c,d,e){var f={x:a,y:b,width:c,height:d,autoPosition:e};return this.grid.canBePlacedWithRespectToHeight(f)},i.prototype.removeWidget=function(b,c){c="undefined"==typeof c?!0:c,b=a(b);var d=b.data("_gridstack_node");
+return j.prototype._triggerChangeEvent=function(a){var b=this.grid.getDirtyNodes(),c=!1,d=[];b&&b.length&&(d.push(b),c=!0),(c||a===!0)&&this.container.trigger("change",d)},j.prototype._triggerAddEvent=function(){this.grid._addedNodes&&this.grid._addedNodes.length>0&&(this.container.trigger("added",[b.map(this.grid._addedNodes,b.clone)]),this.grid._addedNodes=[])},j.prototype._triggerRemoveEvent=function(){this.grid._removedNodes&&this.grid._removedNodes.length>0&&(this.container.trigger("removed",[b.map(this.grid._removedNodes,b.clone)]),this.grid._removedNodes=[])},j.prototype._initStyles=function(){this._stylesId&&g.removeStylesheet(this._stylesId),this._stylesId="gridstack-style-"+(1e5*Math.random()).toFixed(),this._styles=g.createStylesheet(this._stylesId),null!==this._styles&&(this._styles._max=0)},j.prototype._updateStyles=function(a){if(null!==this._styles&&"undefined"!=typeof this._styles){var b,c="."+this.opts._class+" ."+this.opts.itemClass,d=this;if("undefined"==typeof a&&(a=this._styles._max,this._initStyles(),this._updateContainerHeight()),this.opts.cellHeight&&!(0!==this._styles._max&&a<=this._styles._max)&&(b=this.opts.verticalMargin&&this.opts.cellHeightUnit!==this.opts.verticalMarginUnit?function(a,b){return a&&b?"calc("+(d.opts.cellHeight*a+d.opts.cellHeightUnit)+" + "+(d.opts.verticalMargin*b+d.opts.verticalMarginUnit)+")":d.opts.cellHeight*a+d.opts.verticalMargin*b+d.opts.cellHeightUnit}:function(a,b){return d.opts.cellHeight*a+d.opts.verticalMargin*b+d.opts.cellHeightUnit},0===this._styles._max&&g.insertCSSRule(this._styles,c,"min-height: "+b(1,0)+";",0),a>this._styles._max)){for(var e=this._styles._max;e<a;++e)g.insertCSSRule(this._styles,c+'[data-gs-height="'+(e+1)+'"]',"height: "+b(e+1,e)+";",e),g.insertCSSRule(this._styles,c+'[data-gs-min-height="'+(e+1)+'"]',"min-height: "+b(e+1,e)+";",e),g.insertCSSRule(this._styles,c+'[data-gs-max-height="'+(e+1)+'"]',"max-height: "+b(e+1,e)+";",e),g.insertCSSRule(this._styles,c+'[data-gs-y="'+e+'"]',"top: "+b(e,e)+";",e);this._styles._max=a}}},j.prototype._updateContainerHeight=function(){if(!this.grid._updateCounter){var a=this.grid.getGridHeight();this.container.attr("data-gs-current-height",a),this.opts.cellHeight&&(this.opts.verticalMargin?this.opts.cellHeightUnit===this.opts.verticalMarginUnit?this.container.css("height",a*(this.opts.cellHeight+this.opts.verticalMargin)-this.opts.verticalMargin+this.opts.cellHeightUnit):this.container.css("height","calc("+(a*this.opts.cellHeight+this.opts.cellHeightUnit)+" + "+(a*(this.opts.verticalMargin-1)+this.opts.verticalMarginUnit)+")"):this.container.css("height",a*this.opts.cellHeight+this.opts.cellHeightUnit))}},j.prototype._isOneColumnMode=function(){return(window.innerWidth||document.documentElement.clientWidth||document.body.clientWidth)<=this.opts.minWidth},j.prototype._setupRemovingTimeout=function(b){var c=this,d=a(b).data("_gridstack_node");!d._removeTimeout&&c.opts.removable&&(d._removeTimeout=setTimeout(function(){b.addClass("grid-stack-item-removing"),d._isAboutToRemove=!0},c.opts.removeTimeout))},j.prototype._clearRemovingTimeout=function(b){var c=a(b).data("_gridstack_node");c._removeTimeout&&(clearTimeout(c._removeTimeout),c._removeTimeout=null,b.removeClass("grid-stack-item-removing"),c._isAboutToRemove=!1)},j.prototype._prepareElementsByNode=function(b,c){if("undefined"!=typeof a.ui){var d,e,f=this,g=function(a,g){var h,i,j=Math.round(g.position.left/d),k=Math.floor((g.position.top+e/2)/e);if("drag"!=a.type&&(h=Math.round(g.size.width/d),i=Math.round(g.size.height/e)),"drag"==a.type)j<0||j>=f.grid.width||k<0?(f.opts.removable===!0&&f._setupRemovingTimeout(b),j=c._beforeDragX,k=c._beforeDragY,f.placeholder.detach(),f.placeholder.hide(),f.grid.removeNode(c),f._updateContainerHeight(),c._temporaryRemoved=!0):(f._clearRemovingTimeout(b),c._temporaryRemoved&&(f.grid.addNode(c),f.placeholder.attr("data-gs-x",j).attr("data-gs-y",k).attr("data-gs-width",h).attr("data-gs-height",i).show(),f.container.append(f.placeholder),c.el=f.placeholder,c._temporaryRemoved=!1));else if("resize"==a.type&&j<0)return;f.grid.canMoveNode(c,j,k,h,i)&&(f.grid.moveNode(c,j,k,h,i),f._updateContainerHeight())},h=function(g,h){f.container.append(f.placeholder);var i=a(this);f.grid.cleanNodes(),f.grid.beginUpdate(c),d=f.cellWidth();var j=Math.ceil(i.outerHeight()/i.attr("data-gs-height"));e=f.container.height()/parseInt(f.container.attr("data-gs-current-height")),f.placeholder.attr("data-gs-x",i.attr("data-gs-x")).attr("data-gs-y",i.attr("data-gs-y")).attr("data-gs-width",i.attr("data-gs-width")).attr("data-gs-height",i.attr("data-gs-height")).show(),c.el=f.placeholder,c._beforeDragX=c.x,c._beforeDragY=c.y,f.dd.resizable(b,"option","minWidth",d*(c.minWidth||1)),f.dd.resizable(b,"option","minHeight",j*(c.minHeight||1)),"resizestart"==g.type&&i.find(".grid-stack-item").trigger("resizestart")},i=function(d,e){var g=a(this);if(g.data("_gridstack_node")){var h=!1;f.placeholder.detach(),c.el=g,f.placeholder.hide(),c._isAboutToRemove?(h=!0,b.removeData("_gridstack_node"),b.remove()):(f._clearRemovingTimeout(b),c._temporaryRemoved?(g.attr("data-gs-x",c._beforeDragX).attr("data-gs-y",c._beforeDragY).attr("data-gs-width",c.width).attr("data-gs-height",c.height).removeAttr("style"),c.x=c._beforeDragX,c.y=c._beforeDragY,f.grid.addNode(c)):g.attr("data-gs-x",c.x).attr("data-gs-y",c.y).attr("data-gs-width",c.width).attr("data-gs-height",c.height).removeAttr("style")),f._updateContainerHeight(),f._triggerChangeEvent(h),f.grid.endUpdate();var i=g.find(".grid-stack");i.length&&"resizestop"==d.type&&(i.each(function(b,c){a(c).data("gridstack").onResizeHandler()}),g.find(".grid-stack-item").trigger("resizestop"))}};this.dd.draggable(b,{start:h,stop:i,drag:g}).resizable(b,{start:h,stop:i,resize:g}),(c.noMove||this._isOneColumnMode()||this.opts.disableDrag)&&this.dd.draggable(b,"disable"),(c.noResize||this._isOneColumnMode()||this.opts.disableResize)&&this.dd.resizable(b,"disable"),b.attr("data-gs-locked",c.locked?"yes":null)}},j.prototype._prepareElement=function(b,c){c="undefined"!=typeof c&&c;var d=this;b=a(b),b.addClass(this.opts.itemClass);var e=d.grid.addNode({x:b.attr("data-gs-x"),y:b.attr("data-gs-y"),width:b.attr("data-gs-width"),height:b.attr("data-gs-height"),maxWidth:b.attr("data-gs-max-width"),minWidth:b.attr("data-gs-min-width"),maxHeight:b.attr("data-gs-max-height"),minHeight:b.attr("data-gs-min-height"),autoPosition:g.toBool(b.attr("data-gs-auto-position")),noResize:g.toBool(b.attr("data-gs-no-resize")),noMove:g.toBool(b.attr("data-gs-no-move")),locked:g.toBool(b.attr("data-gs-locked")),el:b,id:b.attr("data-gs-id"),_grid:d},c);b.data("_gridstack_node",e),this._prepareElementsByNode(b,e)},j.prototype.setAnimation=function(a){a?this.container.addClass("grid-stack-animate"):this.container.removeClass("grid-stack-animate")},j.prototype.addWidget=function(b,c,d,e,f,g,h,i,j,k,l){return b=a(b),"undefined"!=typeof c&&b.attr("data-gs-x",c),"undefined"!=typeof d&&b.attr("data-gs-y",d),"undefined"!=typeof e&&b.attr("data-gs-width",e),"undefined"!=typeof f&&b.attr("data-gs-height",f),"undefined"!=typeof g&&b.attr("data-gs-auto-position",g?"yes":null),"undefined"!=typeof h&&b.attr("data-gs-min-width",h),"undefined"!=typeof i&&b.attr("data-gs-max-width",i),"undefined"!=typeof j&&b.attr("data-gs-min-height",j),"undefined"!=typeof k&&b.attr("data-gs-max-height",k),"undefined"!=typeof l&&b.attr("data-gs-id",l),this.container.append(b),this._prepareElement(b,!0),this._triggerAddEvent(),this._updateContainerHeight(),this._triggerChangeEvent(!0),b},j.prototype.makeWidget=function(b){return b=a(b),this._prepareElement(b,!0),this._triggerAddEvent(),this._updateContainerHeight(),this._triggerChangeEvent(!0),b},j.prototype.willItFit=function(a,b,c,d,e){var f={x:a,y:b,width:c,height:d,autoPosition:e};return this.grid.canBePlacedWithRespectToHeight(f)},j.prototype.removeWidget=function(b,c){c="undefined"==typeof c||c,b=a(b);var d=b.data("_gridstack_node");
 // For Meteor support: https://github.com/troolee/gridstack.js/pull/272
-d||(d=this.grid.getNodeDataByDOMEl(b)),this.grid.removeNode(d,c),b.removeData("_gridstack_node"),this._updateContainerHeight(),c&&b.remove(),this._triggerChangeEvent(!0),this._triggerRemoveEvent()},i.prototype.removeAll=function(a){b.each(this.grid.nodes,b.bind(function(b){this.removeWidget(b.el,a)},this)),this.grid.nodes=[],this._updateContainerHeight()},i.prototype.destroy=function(b){a(window).off("resize",this.onResizeHandler),this.disable(),"undefined"==typeof b||b?this.container.remove():(this.removeAll(!1),this.container.removeData("gridstack")),f.removeStylesheet(this._stylesId),this.grid&&(this.grid=null)},i.prototype.resizable=function(b,c){var d=this;return b=a(b),b.each(function(b,e){e=a(e);var f=e.data("_gridstack_node");"undefined"!=typeof f&&null!==f&&"undefined"!=typeof a.ui&&(f.noResize=!c,f.noResize||d._isOneColumnMode()?e.resizable("disable"):e.resizable("enable"))}),this},i.prototype.movable=function(b,c){var d=this;return b=a(b),b.each(function(b,e){e=a(e);var f=e.data("_gridstack_node");"undefined"!=typeof f&&null!==f&&"undefined"!=typeof a.ui&&(f.noMove=!c,f.noMove||d._isOneColumnMode()?(e.draggable("disable"),e.removeClass("ui-draggable-handle")):(e.draggable("enable"),e.addClass("ui-draggable-handle")))}),this},i.prototype.enableMove=function(a,b){this.movable(this.container.children("."+this.opts.itemClass),a),b&&(this.opts.disableDrag=!a)},i.prototype.enableResize=function(a,b){this.resizable(this.container.children("."+this.opts.itemClass),a),b&&(this.opts.disableResize=!a)},i.prototype.disable=function(){this.movable(this.container.children("."+this.opts.itemClass),!1),this.resizable(this.container.children("."+this.opts.itemClass),!1),this.container.trigger("disable")},i.prototype.enable=function(){this.movable(this.container.children("."+this.opts.itemClass),!0),this.resizable(this.container.children("."+this.opts.itemClass),!0),this.container.trigger("enable")},i.prototype.locked=function(b,c){return b=a(b),b.each(function(b,d){d=a(d);var e=d.data("_gridstack_node");"undefined"!=typeof e&&null!==e&&(e.locked=c||!1,d.attr("data-gs-locked",e.locked?"yes":null))}),this},i.prototype.maxHeight=function(b,c){return b=a(b),b.each(function(b,d){d=a(d);var e=d.data("_gridstack_node");"undefined"!=typeof e&&null!==e&&(isNaN(c)||(e.maxHeight=c||!1,d.attr("data-gs-max-height",c)))}),this},i.prototype.minHeight=function(b,c){return b=a(b),b.each(function(b,d){d=a(d);var e=d.data("_gridstack_node");"undefined"!=typeof e&&null!==e&&(isNaN(c)||(e.minHeight=c||!1,d.attr("data-gs-min-height",c)))}),this},i.prototype.maxWidth=function(b,c){return b=a(b),b.each(function(b,d){d=a(d);var e=d.data("_gridstack_node");"undefined"!=typeof e&&null!==e&&(isNaN(c)||(e.maxWidth=c||!1,d.attr("data-gs-max-width",c)))}),this},i.prototype.minWidth=function(b,c){return b=a(b),b.each(function(b,d){d=a(d);var e=d.data("_gridstack_node");"undefined"!=typeof e&&null!==e&&(isNaN(c)||(e.minWidth=c||!1,d.attr("data-gs-min-width",c)))}),this},i.prototype._updateElement=function(b,c){b=a(b).first();var d=b.data("_gridstack_node");if("undefined"!=typeof d&&null!==d){var e=this;e.grid.cleanNodes(),e.grid.beginUpdate(d),c.call(this,b,d),e._updateContainerHeight(),e._triggerChangeEvent(),e.grid.endUpdate()}},i.prototype.resize=function(a,b,c){this._updateElement(a,function(a,d){b=null!==b&&"undefined"!=typeof b?b:d.width,c=null!==c&&"undefined"!=typeof c?c:d.height,this.grid.moveNode(d,d.x,d.y,b,c)})},i.prototype.move=function(a,b,c){this._updateElement(a,function(a,d){b=null!==b&&"undefined"!=typeof b?b:d.x,c=null!==c&&"undefined"!=typeof c?c:d.y,this.grid.moveNode(d,b,c,d.width,d.height)})},i.prototype.update=function(a,b,c,d,e){this._updateElement(a,function(a,f){b=null!==b&&"undefined"!=typeof b?b:f.x,c=null!==c&&"undefined"!=typeof c?c:f.y,d=null!==d&&"undefined"!=typeof d?d:f.width,e=null!==e&&"undefined"!=typeof e?e:f.height,this.grid.moveNode(f,b,c,d,e)})},i.prototype.verticalMargin=function(a,b){if("undefined"==typeof a)return this.opts.verticalMargin;var c=f.parseHeight(a);this.opts.verticalMarginUnit===c.unit&&this.opts.height===c.height||(this.opts.verticalMarginUnit=c.unit,this.opts.verticalMargin=c.height,b||this._updateStyles())},i.prototype.cellHeight=function(a,b){if("undefined"==typeof a){if(this.opts.cellHeight)return this.opts.cellHeight;var c=this.container.children("."+this.opts.itemClass).first();return Math.ceil(c.outerHeight()/c.attr("data-gs-height"))}var d=f.parseHeight(a);this.opts.cellHeightUnit===d.heightUnit&&this.opts.height===d.height||(this.opts.cellHeightUnit=d.unit,this.opts.cellHeight=d.height,b||this._updateStyles())},i.prototype.cellWidth=function(){return Math.round(this.container.outerWidth()/this.opts.width)},i.prototype.getCellFromPixel=function(a,b){var c="undefined"!=typeof b&&b?this.container.offset():this.container.position(),d=a.left-c.left,e=a.top-c.top,f=Math.floor(this.container.width()/this.opts.width),g=Math.floor(this.container.height()/parseInt(this.container.attr("data-gs-current-height")));return{x:Math.floor(d/f),y:Math.floor(e/g)}},i.prototype.batchUpdate=function(){this.grid.batchUpdate()},i.prototype.commit=function(){this.grid.commit(),this._updateContainerHeight()},i.prototype.isAreaEmpty=function(a,b,c,d){return this.grid.isAreaEmpty(a,b,c,d)},i.prototype.setStatic=function(a){this.opts.staticGrid=a===!0,this.enableMove(!a),this.enableResize(!a),this._setStaticClass()},i.prototype._setStaticClass=function(){var a="grid-stack-static";this.opts.staticGrid===!0?this.container.addClass(a):this.container.removeClass(a)},i.prototype._updateNodeWidths=function(a,b){this.grid._sortNodes(),this.grid.batchUpdate();for(var c={},d=0;d<this.grid.nodes.length;d++)c=this.grid.nodes[d],this.update(c.el,Math.round(c.x*b/a),void 0,Math.round(c.width*b/a),void 0);this.grid.commit()},i.prototype.setGridWidth=function(a,b){this.container.removeClass("grid-stack-"+this.opts.width),b!==!0&&this._updateNodeWidths(this.opts.width,a),this.opts.width=a,this.grid.width=a,this.container.addClass("grid-stack-"+a)},h.prototype.batch_update=d(h.prototype.batchUpdate),h.prototype._fix_collisions=d(h.prototype._fixCollisions,"_fix_collisions","_fixCollisions"),h.prototype.is_area_empty=d(h.prototype.isAreaEmpty,"is_area_empty","isAreaEmpty"),h.prototype._sort_nodes=d(h.prototype._sortNodes,"_sort_nodes","_sortNodes"),h.prototype._pack_nodes=d(h.prototype._packNodes,"_pack_nodes","_packNodes"),h.prototype._prepare_node=d(h.prototype._prepareNode,"_prepare_node","_prepareNode"),h.prototype.clean_nodes=d(h.prototype.cleanNodes,"clean_nodes","cleanNodes"),h.prototype.get_dirty_nodes=d(h.prototype.getDirtyNodes,"get_dirty_nodes","getDirtyNodes"),h.prototype.add_node=d(h.prototype.addNode,"add_node","addNode, "),h.prototype.remove_node=d(h.prototype.removeNode,"remove_node","removeNode"),h.prototype.can_move_node=d(h.prototype.canMoveNode,"can_move_node","canMoveNode"),h.prototype.move_node=d(h.prototype.moveNode,"move_node","moveNode"),h.prototype.get_grid_height=d(h.prototype.getGridHeight,"get_grid_height","getGridHeight"),h.prototype.begin_update=d(h.prototype.beginUpdate,"begin_update","beginUpdate"),h.prototype.end_update=d(h.prototype.endUpdate,"end_update","endUpdate"),h.prototype.can_be_placed_with_respect_to_height=d(h.prototype.canBePlacedWithRespectToHeight,"can_be_placed_with_respect_to_height","canBePlacedWithRespectToHeight"),i.prototype._trigger_change_event=d(i.prototype._triggerChangeEvent,"_trigger_change_event","_triggerChangeEvent"),i.prototype._init_styles=d(i.prototype._initStyles,"_init_styles","_initStyles"),i.prototype._update_styles=d(i.prototype._updateStyles,"_update_styles","_updateStyles"),i.prototype._update_container_height=d(i.prototype._updateContainerHeight,"_update_container_height","_updateContainerHeight"),i.prototype._is_one_column_mode=d(i.prototype._isOneColumnMode,"_is_one_column_mode","_isOneColumnMode"),i.prototype._prepare_element=d(i.prototype._prepareElement,"_prepare_element","_prepareElement"),i.prototype.set_animation=d(i.prototype.setAnimation,"set_animation","setAnimation"),i.prototype.add_widget=d(i.prototype.addWidget,"add_widget","addWidget"),i.prototype.make_widget=d(i.prototype.makeWidget,"make_widget","makeWidget"),i.prototype.will_it_fit=d(i.prototype.willItFit,"will_it_fit","willItFit"),i.prototype.remove_widget=d(i.prototype.removeWidget,"remove_widget","removeWidget"),i.prototype.remove_all=d(i.prototype.removeAll,"remove_all","removeAll"),i.prototype.min_height=d(i.prototype.minHeight,"min_height","minHeight"),i.prototype.min_width=d(i.prototype.minWidth,"min_width","minWidth"),i.prototype._update_element=d(i.prototype._updateElement,"_update_element","_updateElement"),i.prototype.cell_height=d(i.prototype.cellHeight,"cell_height","cellHeight"),i.prototype.cell_width=d(i.prototype.cellWidth,"cell_width","cellWidth"),i.prototype.get_cell_from_pixel=d(i.prototype.getCellFromPixel,"get_cell_from_pixel","getCellFromPixel"),i.prototype.batch_update=d(i.prototype.batchUpdate,"batch_update","batchUpdate"),i.prototype.is_area_empty=d(i.prototype.isAreaEmpty,"is_area_empty","isAreaEmpty"),i.prototype.set_static=d(i.prototype.setStatic,"set_static","setStatic"),i.prototype._set_static_class=d(i.prototype._setStaticClass,"_set_static_class","_setStaticClass"),c.GridStackUI=i,c.GridStackUI.Utils=f,c.GridStackUI.Engine=h,a.fn.gridstack=function(b){return this.each(function(){var c=a(this);c.data("gridstack")||c.data("gridstack",new i(this,b))})},c.GridStackUI});
+d||(d=this.grid.getNodeDataByDOMEl(b)),this.grid.removeNode(d,c),b.removeData("_gridstack_node"),this._updateContainerHeight(),c&&b.remove(),this._triggerChangeEvent(!0),this._triggerRemoveEvent()},j.prototype.removeAll=function(a){b.each(this.grid.nodes,b.bind(function(b){this.removeWidget(b.el,a)},this)),this.grid.nodes=[],this._updateContainerHeight()},j.prototype.destroy=function(b){a(window).off("resize",this.onResizeHandler),this.disable(),"undefined"==typeof b||b?this.container.remove():(this.removeAll(!1),this.container.removeData("gridstack")),g.removeStylesheet(this._stylesId),this.grid&&(this.grid=null)},j.prototype.resizable=function(b,c){var d=this;return b=a(b),b.each(function(b,e){e=a(e);var f=e.data("_gridstack_node");"undefined"!=typeof f&&null!==f&&"undefined"!=typeof a.ui&&(f.noResize=!c,f.noResize||d._isOneColumnMode()?d.dd.resizable(e,"disable"):d.dd.resizable(e,"enable"))}),this},j.prototype.movable=function(b,c){var d=this;return b=a(b),b.each(function(b,e){e=a(e);var f=e.data("_gridstack_node");"undefined"!=typeof f&&null!==f&&"undefined"!=typeof a.ui&&(f.noMove=!c,f.noMove||d._isOneColumnMode()?(d.dd.draggable(e,"disable"),e.removeClass("ui-draggable-handle")):(d.dd.draggable(e,"enable"),e.addClass("ui-draggable-handle")))}),this},j.prototype.enableMove=function(a,b){this.movable(this.container.children("."+this.opts.itemClass),a),b&&(this.opts.disableDrag=!a)},j.prototype.enableResize=function(a,b){this.resizable(this.container.children("."+this.opts.itemClass),a),b&&(this.opts.disableResize=!a)},j.prototype.disable=function(){this.movable(this.container.children("."+this.opts.itemClass),!1),this.resizable(this.container.children("."+this.opts.itemClass),!1),this.container.trigger("disable")},j.prototype.enable=function(){this.movable(this.container.children("."+this.opts.itemClass),!0),this.resizable(this.container.children("."+this.opts.itemClass),!0),this.container.trigger("enable")},j.prototype.locked=function(b,c){return b=a(b),b.each(function(b,d){d=a(d);var e=d.data("_gridstack_node");"undefined"!=typeof e&&null!==e&&(e.locked=c||!1,d.attr("data-gs-locked",e.locked?"yes":null))}),this},j.prototype.maxHeight=function(b,c){return b=a(b),b.each(function(b,d){d=a(d);var e=d.data("_gridstack_node");"undefined"!=typeof e&&null!==e&&(isNaN(c)||(e.maxHeight=c||!1,d.attr("data-gs-max-height",c)))}),this},j.prototype.minHeight=function(b,c){return b=a(b),b.each(function(b,d){d=a(d);var e=d.data("_gridstack_node");"undefined"!=typeof e&&null!==e&&(isNaN(c)||(e.minHeight=c||!1,d.attr("data-gs-min-height",c)))}),this},j.prototype.maxWidth=function(b,c){return b=a(b),b.each(function(b,d){d=a(d);var e=d.data("_gridstack_node");"undefined"!=typeof e&&null!==e&&(isNaN(c)||(e.maxWidth=c||!1,d.attr("data-gs-max-width",c)))}),this},j.prototype.minWidth=function(b,c){return b=a(b),b.each(function(b,d){d=a(d);var e=d.data("_gridstack_node");"undefined"!=typeof e&&null!==e&&(isNaN(c)||(e.minWidth=c||!1,d.attr("data-gs-min-width",c)))}),this},j.prototype._updateElement=function(b,c){b=a(b).first();var d=b.data("_gridstack_node");if("undefined"!=typeof d&&null!==d){var e=this;e.grid.cleanNodes(),e.grid.beginUpdate(d),c.call(this,b,d),e._updateContainerHeight(),e._triggerChangeEvent(),e.grid.endUpdate()}},j.prototype.resize=function(a,b,c){this._updateElement(a,function(a,d){b=null!==b&&"undefined"!=typeof b?b:d.width,c=null!==c&&"undefined"!=typeof c?c:d.height,this.grid.moveNode(d,d.x,d.y,b,c)})},j.prototype.move=function(a,b,c){this._updateElement(a,function(a,d){b=null!==b&&"undefined"!=typeof b?b:d.x,c=null!==c&&"undefined"!=typeof c?c:d.y,this.grid.moveNode(d,b,c,d.width,d.height)})},j.prototype.update=function(a,b,c,d,e){this._updateElement(a,function(a,f){b=null!==b&&"undefined"!=typeof b?b:f.x,c=null!==c&&"undefined"!=typeof c?c:f.y,d=null!==d&&"undefined"!=typeof d?d:f.width,e=null!==e&&"undefined"!=typeof e?e:f.height,this.grid.moveNode(f,b,c,d,e)})},j.prototype.verticalMargin=function(a,b){if("undefined"==typeof a)return this.opts.verticalMargin;var c=g.parseHeight(a);this.opts.verticalMarginUnit===c.unit&&this.opts.height===c.height||(this.opts.verticalMarginUnit=c.unit,this.opts.verticalMargin=c.height,b||this._updateStyles())},j.prototype.cellHeight=function(a,b){if("undefined"==typeof a){if(this.opts.cellHeight)return this.opts.cellHeight;var c=this.container.children("."+this.opts.itemClass).first();return Math.ceil(c.outerHeight()/c.attr("data-gs-height"))}var d=g.parseHeight(a);this.opts.cellHeightUnit===d.heightUnit&&this.opts.height===d.height||(this.opts.cellHeightUnit=d.unit,this.opts.cellHeight=d.height,b||this._updateStyles())},j.prototype.cellWidth=function(){return Math.round(this.container.outerWidth()/this.opts.width)},j.prototype.getCellFromPixel=function(a,b){var c="undefined"!=typeof b&&b?this.container.offset():this.container.position(),d=a.left-c.left,e=a.top-c.top,f=Math.floor(this.container.width()/this.opts.width),g=Math.floor(this.container.height()/parseInt(this.container.attr("data-gs-current-height")));return{x:Math.floor(d/f),y:Math.floor(e/g)}},j.prototype.batchUpdate=function(){this.grid.batchUpdate()},j.prototype.commit=function(){this.grid.commit(),this._updateContainerHeight()},j.prototype.isAreaEmpty=function(a,b,c,d){return this.grid.isAreaEmpty(a,b,c,d)},j.prototype.setStatic=function(a){this.opts.staticGrid=a===!0,this.enableMove(!a),this.enableResize(!a),this._setStaticClass()},j.prototype._setStaticClass=function(){var a="grid-stack-static";this.opts.staticGrid===!0?this.container.addClass(a):this.container.removeClass(a)},j.prototype._updateNodeWidths=function(a,b){this.grid._sortNodes(),this.grid.batchUpdate();for(var c={},d=0;d<this.grid.nodes.length;d++)c=this.grid.nodes[d],this.update(c.el,Math.round(c.x*b/a),void 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 //# sourceMappingURL=gridstack.min.map
\ No newline at end of file
diff --git a/dist/gridstack.min.map b/dist/gridstack.min.map
index e343f15..2fb9118 100644
--- a/dist/gridstack.min.map
+++ b/dist/gridstack.min.map
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\ No newline at end of file
diff --git a/doc/README.md b/doc/README.md
index 8ac6909..3320fdb 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -68,6 +68,7 @@ gridstack.js API
  - a string (ex: '10em', '100px', '10rem')
  - 0 or null, in which case the library will not generate styles for rows. Everything must be defined in CSS files.
  - `'auto'` - height will be calculated from cell width.
+- `ddPlugin` - class that implement drag'n'drop functionallity for gridstack. If `false` grid will be static. (default: `null` - first available plugin will be used)
 - `disableDrag` - disallows dragging of widgets (default: `false`).
 - `disableResize` - disallows resizing of widgets (default: `false`).
 - `draggable` - allows to override jQuery UI draggable options. (default: `{handle: '.grid-stack-item-content', scroll: false, appendTo: 'body'}`)
diff --git a/karma.conf.js b/karma.conf.js
index a2472da..4230ca8 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -19,6 +19,7 @@ module.exports = function(config) {
           'bower_components/jquery-ui/jquery-ui.min.js',
           'bower_components/lodash/dist/lodash.min.js',
           'src/gridstack.js',
+          'src/gridstack.jQueryUI.js',
           'spec/*-spec.js'
         ],
 
@@ -31,7 +32,8 @@ module.exports = function(config) {
         // preprocess matching files before serving them to the browser
         // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
         preprocessors: {
-            'src/gridstack.js': ['coverage']
+            'src/gridstack.js': ['coverage'],
+            'src/gridstack.jQueryUI.js': ['coverage'],
         },
 
 
diff --git a/package.json b/package.json
index 2fb44e3..b203ab8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gridstack",
-  "version": "0.2.7-dev",
+  "version": "0.3.0-dev",
   "description": "gridstack.js is a jQuery plugin for widget layout",
   "main": "dist/gridstack.js",
   "repository": {
diff --git a/spec/e2e/html/gridstack-with-height.html b/spec/e2e/html/gridstack-with-height.html
index 4845ef6..2f543eb 100644
--- a/spec/e2e/html/gridstack-with-height.html
+++ b/spec/e2e/html/gridstack-with-height.html
@@ -18,6 +18,7 @@
     <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
     <script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/3.5.0/lodash.min.js"></script>
     <script src="../../../dist/gridstack.js"></script>
+    <script src="../../../dist/gridstack.jQueryUI.js"></script>
 
     <style type="text/css">
         .grid-stack {
diff --git a/src/gridstack.jQueryUI.js b/src/gridstack.jQueryUI.js
new file mode 100644
index 0000000..c5d4936
--- /dev/null
+++ b/src/gridstack.jQueryUI.js
@@ -0,0 +1,97 @@
+/**
+ * gridstack.js 0.3.0-dev
+ * http://troolee.github.io/gridstack.js/
+ * (c) 2014-2016 Pavel Reznikov, Dylan Weiss
+ * gridstack.js may be freely distributed under the MIT license.
+ * @preserve
+*/
+(function(factory) {
+    if (typeof define === 'function' && define.amd) {
+        define(['jquery', 'lodash', 'gridstack', 'jquery-ui/data', 'jquery-ui/disable-selection', 'jquery-ui/focusable',
+            'jquery-ui/form', 'jquery-ui/ie', 'jquery-ui/keycode', 'jquery-ui/labels', 'jquery-ui/jquery-1-7',
+            'jquery-ui/plugin', 'jquery-ui/safe-active-element', 'jquery-ui/safe-blur', 'jquery-ui/scroll-parent',
+            'jquery-ui/tabbable', 'jquery-ui/unique-id', 'jquery-ui/version', 'jquery-ui/widget',
+            'jquery-ui/widgets/mouse', 'jquery-ui/widgets/draggable', 'jquery-ui/widgets/droppable',
+            'jquery-ui/widgets/resizable'], factory);
+    } else if (typeof exports !== 'undefined') {
+        try { jQuery = require('jquery'); } catch (e) {}
+        try { _ = require('lodash'); } catch (e) {}
+        try { GridStackUI = require('gridstack'); } catch (e) {}
+        factory(jQuery, _, GridStackUI);
+    } else {
+        factory(jQuery, _, GridStackUI);
+    }
+})(function($, _, GridStackUI) {
+
+    var scope = window;
+
+    /**
+    * @class JQueryUIGridStackDragDropPlugin
+    * jQuery UI implementation of drag'n'drop gridstack plugin.
+    */
+    function JQueryUIGridStackDragDropPlugin(grid) {
+        GridStackUI.GridStackDragDropPlugin.call(this, grid);
+    }
+
+    GridStackUI.GridStackDragDropPlugin.registerPlugin(JQueryUIGridStackDragDropPlugin);
+
+    JQueryUIGridStackDragDropPlugin.prototype = Object.create(GridStackUI.GridStackDragDropPlugin.prototype);
+    JQueryUIGridStackDragDropPlugin.prototype.constructor = JQueryUIGridStackDragDropPlugin;
+
+    JQueryUIGridStackDragDropPlugin.prototype.resizable = function(el, opts) {
+        el = $(el);
+        if (opts === 'disable' || opts === 'enable') {
+            el.resizable(opts);
+        } else if (opts === 'option') {
+            var key = arguments[2];
+            var value = arguments[3];
+            el.resizable(opts, key, value);
+        } else {
+            el.resizable(_.extend({}, this.grid.opts.resizable, {
+                start: opts.start || function() {},
+                stop: opts.stop || function() {},
+                resize: opts.resize || function() {}
+            }));
+        }
+        return this;
+    };
+
+    JQueryUIGridStackDragDropPlugin.prototype.draggable = function(el, opts) {
+        el = $(el);
+        if (opts === 'disable' || opts === 'enable') {
+            el.draggable(opts);
+        } else {
+            el.draggable(_.extend({}, this.grid.opts.draggable, {
+                containment: this.grid.opts.isNested ? this.grid.container.parent() : null,
+                start: opts.start || function() {},
+                stop: opts.stop || function() {},
+                drag: opts.drag || function() {}
+            }));
+        }
+        return this;
+    };
+
+    JQueryUIGridStackDragDropPlugin.prototype.droppable = function(el, opts) {
+        el = $(el);
+        if (opts === 'disable' || opts === 'enable') {
+            el.droppable(opts);
+        } else {
+            el.droppable({
+                accept: opts.accept
+            });
+        }
+        return this;
+    };
+
+    JQueryUIGridStackDragDropPlugin.prototype.isDroppable = function(el, opts) {
+        el = $(el);
+        return Boolean(el.data('droppable'));
+    };
+
+    JQueryUIGridStackDragDropPlugin.prototype.on = function(el, eventName, callback) {
+        $(el).on(eventName, callback);
+        return this;
+    };
+
+    return JQueryUIGridStackDragDropPlugin;
+});
diff --git a/src/gridstack.js b/src/gridstack.js
index 6518db1..c8968aa 100644
--- a/src/gridstack.js
+++ b/src/gridstack.js
@@ -1,18 +1,13 @@
 /**
- * gridstack.js 0.2.7-dev
+ * gridstack.js 0.3.0-dev
  * http://troolee.github.io/gridstack.js/
- * (c) 2014-2016 Pavel Reznikov
+ * (c) 2014-2016 Pavel Reznikov, Dylan Weiss
  * gridstack.js may be freely distributed under the MIT license.
  * @preserve
 */
 (function(factory) {
     if (typeof define === 'function' && define.amd) {
-        define(['jquery', 'lodash', 'jquery-ui/data', 'jquery-ui/disable-selection', 'jquery-ui/focusable',
-            'jquery-ui/form', 'jquery-ui/ie', 'jquery-ui/keycode', 'jquery-ui/labels', 'jquery-ui/jquery-1-7',
-            'jquery-ui/plugin', 'jquery-ui/safe-active-element', 'jquery-ui/safe-blur', 'jquery-ui/scroll-parent',
-            'jquery-ui/tabbable', 'jquery-ui/unique-id', 'jquery-ui/version', 'jquery-ui/widget',
-            'jquery-ui/widgets/mouse', 'jquery-ui/widgets/draggable', 'jquery-ui/widgets/droppable',
-            'jquery-ui/widgets/resizable'], factory);
+        define(['jquery', 'lodash'], factory);
     } else if (typeof exports !== 'undefined') {
         try { jQuery = require('jquery'); } catch (e) {}
         try { _ = require('lodash'); } catch (e) {}
@@ -124,6 +119,41 @@
     Utils.insert_css_rule = obsolete(Utils.insertCSSRule, 'insert_css_rule', 'insertCSSRule');
     // jscs:enable requireCamelCaseOrUpperCaseIdentifiers
 
+    /**
+    * @class GridStackDragDropPlugin
+    * Base class for drag'n'drop plugin.
+    */
+    function GridStackDragDropPlugin(grid) {
+        this.grid = grid;
+    }
+
+    GridStackDragDropPlugin.registeredPlugins = [];
+
+    GridStackDragDropPlugin.registerPlugin = function(pluginClass) {
+        GridStackDragDropPlugin.registeredPlugins.push(pluginClass);
+    };
+
+    GridStackDragDropPlugin.prototype.resizable = function(el, opts) {
+        return this;
+    };
+
+    GridStackDragDropPlugin.prototype.draggable = function(el, opts) {
+        return this;
+    };
+
+    GridStackDragDropPlugin.prototype.droppable = function(el, opts) {
+        return this;
+    };
+
+    GridStackDragDropPlugin.prototype.isDroppable = function(el) {
+        return false;
+    };
+
+    GridStackDragDropPlugin.prototype.on = function(el, eventName, callback) {
+        return this;
+    };
+
+
     var idSeq = 0;
 
     var GridStackEngine = function(width, onchange, floatMode, height, items) {
@@ -571,9 +601,18 @@
             removeTimeout: 2000,
             verticalMarginUnit: 'px',
             cellHeightUnit: 'px',
-            oneColumnModeClass: opts.oneColumnModeClass || 'grid-stack-one-column-mode'
+            oneColumnModeClass: opts.oneColumnModeClass || 'grid-stack-one-column-mode',
+            ddPlugin: null
         });
 
+        if (this.opts.ddPlugin === false) {
+            this.opts.ddPlugin = GridStackDragDropPlugin;
+        } else if (this.opts.ddPlugin === null) {
+            this.opts.ddPlugin = _.first(GridStackDragDropPlugin.registeredPlugins) || GridStackDragDropPlugin;
+        }
+
+        this.dd = new this.opts.ddPlugin(this);
+
         if (this.opts.rtl === 'auto') {
             this.opts.rtl = this.container.css('direction') === 'rtl';
         }
@@ -670,10 +709,10 @@
                         return;
                     }
                     if (node.noMove || self.opts.disableDrag) {
-                        node.el.draggable('disable');
+                        self.dd.draggable(node.el, 'disable');
                     }
                     if (node.noResize || self.opts.disableResize) {
-                        node.el.resizable('disable');
+                        self.dd.resizable(node.el, 'disable');
                     }
 
                     node.el.trigger('resize');
@@ -692,10 +731,10 @@
 
                 _.each(self.grid.nodes, function(node) {
                     if (!node.noMove && !self.opts.disableDrag) {
-                        node.el.draggable('enable');
+                        self.dd.draggable(node.el, 'enable');
                     }
                     if (!node.noResize && !self.opts.disableResize) {
-                        node.el.resizable('enable');
+                        self.dd.resizable(node.el, 'enable');
                     }
 
                     node.el.trigger('resize');
@@ -708,13 +747,13 @@
 
         if (!self.opts.staticGrid && typeof self.opts.removable === 'string') {
             var trashZone = $(self.opts.removable);
-            if (!trashZone.data('droppable')) {
-                trashZone.droppable({
+            if (!this.dd.isDroppable(trashZone)) {
+                this.dd.droppable(trashZone, {
                     accept: '.' + self.opts.itemClass
                 });
             }
-            trashZone
-                .on('dropover', function(event, ui) {
+            this.dd
+                .on(trashZone, 'dropover', function(event, ui) {
                     var el = $(ui.draggable);
                     var node = el.data('_gridstack_node');
                     if (node._grid !== self) {
@@ -722,7 +761,7 @@
                     }
                     self._setupRemovingTimeout(el);
                 })
-                .on('dropout', function(event, ui) {
+                .on(trashZone, 'dropout', function(event, ui) {
                     var el = $(ui.draggable);
                     var node = el.data('_gridstack_node');
                     if (node._grid !== self) {
@@ -772,16 +811,18 @@
                 }
             };
 
-            $(self.container).droppable({
-                accept: function(el) {
-                    el = $(el);
-                    var node = el.data('_gridstack_node');
-                    if (node && node._grid === self) {
-                        return false;
+            this.dd
+                .droppable(self.container, {
+                    accept: function(el) {
+                        el = $(el);
+                        var node = el.data('_gridstack_node');
+                        if (node && node._grid === self) {
+                            return false;
+                        }
+                        return el.is(self.opts.acceptWidgets === true ? '.grid-stack-item' : self.opts.acceptWidgets);
                     }
-                    return el.is(self.opts.acceptWidgets === true ? '.grid-stack-item' : self.opts.acceptWidgets);
-                },
-                over: function(event, ui) {
+                })
+                .on(self.container, 'dropover', function(event, ui) {
                     var offset = self.container.offset();
                     var el = $(ui.draggable);
                     var cellWidth = self.cellWidth();
@@ -798,8 +839,8 @@
                     el.data('_gridstack_node_orig', origNode);
 
                     el.on('drag', onDrag);
-                },
-                out: function(event, ui) {
+                })
+                .on(self.container, 'dropout', function(event, ui) {
                     var el = $(ui.draggable);
                     el.unbind('drag', onDrag);
                     var node = el.data('_gridstack_node');
@@ -808,8 +849,8 @@
                     self.placeholder.detach();
                     self._updateContainerHeight();
                     el.data('_gridstack_node', el.data('_gridstack_node_orig'));
-                },
-                drop: function(event, ui) {
+                })
+                .on(self.container, 'drop', function(event, ui) {
                     self.placeholder.detach();
 
                     var node = $(ui.draggable).data('_gridstack_node');
@@ -836,8 +877,7 @@
                     self._triggerChangeEvent();
 
                     self.grid.endUpdate();
-                }
-            });
+                });
         }
     };
 
@@ -1081,8 +1121,8 @@
             node._beforeDragX = node.x;
             node._beforeDragY = node.y;
 
-            el.resizable('option', 'minWidth', cellWidth * (node.minWidth || 1));
-            el.resizable('option', 'minHeight', strictCellHeight * (node.minHeight || 1));
+            self.dd.resizable(el, 'option', 'minWidth', cellWidth * (node.minWidth || 1));
+            self.dd.resizable(el, 'option', 'minHeight', strictCellHeight * (node.minHeight || 1));
 
             if (event.type == 'resizestart') {
                 o.find('.grid-stack-item').trigger('resizestart');
@@ -1139,25 +1179,24 @@
             }
         };
 
-        el
-            .draggable(_.extend({}, this.opts.draggable, {
-                containment: this.opts.isNested ? this.container.parent() : null,
+        this.dd
+            .draggable(el, {
                 start: onStartMoving,
                 stop: onEndMoving,
                 drag: dragOrResize
-            }))
-            .resizable(_.extend({}, this.opts.resizable, {
+            })
+            .resizable(el, {
                 start: onStartMoving,
                 stop: onEndMoving,
                 resize: dragOrResize
-            }));
+            });
 
         if (node.noMove || this._isOneColumnMode() || this.opts.disableDrag) {
-            el.draggable('disable');
+            this.dd.draggable(el, 'disable');
         }
 
         if (node.noResize || this._isOneColumnMode() || this.opts.disableResize) {
-            el.resizable('disable');
+            this.dd.resizable(el, 'disable');
         }
 
         el.attr('data-gs-locked', node.locked ? 'yes' : null);
@@ -1291,9 +1330,9 @@
 
             node.noResize = !(val || false);
             if (node.noResize || self._isOneColumnMode()) {
-                el.resizable('disable');
+                self.dd.resizable(el, 'disable');
             } else {
-                el.resizable('enable');
+                self.dd.resizable(el, 'enable');
             }
         });
         return this;
@@ -1311,10 +1350,10 @@
 
             node.noMove = !(val || false);
             if (node.noMove || self._isOneColumnMode()) {
-                el.draggable('disable');
+                self.dd.draggable(el, 'disable');
                 el.removeClass('ui-draggable-handle');
             } else {
-                el.draggable('enable');
+                self.dd.draggable(el, 'enable');
                 el.addClass('ui-draggable-handle');
             }
         });
@@ -1670,6 +1709,7 @@
 
     scope.GridStackUI.Utils = Utils;
     scope.GridStackUI.Engine = GridStackEngine;
+    scope.GridStackUI.GridStackDragDropPlugin = GridStackDragDropPlugin;
 
     $.fn.gridstack = function(opts) {
         return this.each(function() {