diff --git a/Gruntfile.js b/Gruntfile.js
index e94d699da..832383212 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -1,111 +1,111 @@
-// jscs:disable requireCamelCaseOrUpperCaseIdentifiers
-module.exports = function(grunt) {
-    grunt.loadNpmTasks('grunt-sass');
-    grunt.loadNpmTasks('grunt-contrib-cssmin');
-    grunt.loadNpmTasks('grunt-contrib-copy');
-    grunt.loadNpmTasks('grunt-contrib-uglify');
-    grunt.loadNpmTasks('grunt-contrib-jshint');
-    grunt.loadNpmTasks('grunt-jscs');
-    grunt.loadNpmTasks('grunt-contrib-watch');
-    grunt.loadNpmTasks('grunt-protractor-runner');
-    grunt.loadNpmTasks('grunt-contrib-connect');
-    grunt.loadNpmTasks('grunt-protractor-webdriver');
-
-    grunt.initConfig({
-        sass: {
-            options: {
-                outputStyle: 'expanded'
-            },
-            dist: {
-                files: {
-                    'dist/gridstack.css': 'src/gridstack.scss',
-                    'dist/gridstack-extra.css': 'src/gridstack-extra.scss'
-                }
-            }
-        },
-
-        cssmin: {
-            dist: {
-                files: {
-                    'dist/gridstack.min.css': ['dist/gridstack.css'],
-                    'dist/gridstack-extra.min.css': ['dist/gridstack-extra.css']
-                }
-            }
-        },
-
-        copy: {
-            dist: {
-                files: {
-                    'dist/gridstack.js': ['src/gridstack.js'],
-                    'dist/gridstack.jQueryUI.js': ['src/gridstack.jQueryUI.js'],
-                }
-            }
-        },
-
-        uglify: {
-            options: {
-                sourceMap: true,
-                sourceMapName: 'dist/gridstack.min.map',
-                preserveComments: 'some'
-            },
-            dist: {
-                files: {
-                    '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']
-                }
-            }
-        },
-
-        jshint: {
-            all: ['src/*.js']
-        },
-
-        jscs: {
-            all: ['*.js', 'src/*.js', ],
-        },
-
-        watch: {
-            scripts: {
-                files: ['src/*.js'],
-                tasks: ['uglify', 'copy'],
-                options: {
-                },
-            },
-            styles: {
-                files: ['src/*.scss'],
-                tasks: ['sass', 'cssmin'],
-                options: {
-                },
-            }
-        },
-
-        protractor: {
-            options: {
-                configFile: 'protractor.conf.js',
-            },
-            all: {}
-        },
-
-        connect: {
-            all: {
-                options: {
-                    port: 8080,
-                    hostname: 'localhost',
-                    base: '.',
-                },
-            },
-        },
-
-        protractor_webdriver: {
-            all: {
-                options: {
-                    command: 'webdriver-manager start',
-                }
-            }
-        }
-    });
-
-    grunt.registerTask('default', ['sass', 'cssmin', 'jshint', 'jscs', 'copy', 'uglify']);
-    grunt.registerTask('e2e-test', ['connect', 'protractor_webdriver', 'protractor']);
-};
+// jscs:disable requireCamelCaseOrUpperCaseIdentifiers
+module.exports = function(grunt) {
+    grunt.loadNpmTasks('grunt-sass');
+    grunt.loadNpmTasks('grunt-contrib-cssmin');
+    grunt.loadNpmTasks('grunt-contrib-copy');
+    grunt.loadNpmTasks('grunt-contrib-uglify');
+    grunt.loadNpmTasks('grunt-contrib-jshint');
+    grunt.loadNpmTasks('grunt-jscs');
+    grunt.loadNpmTasks('grunt-contrib-watch');
+    grunt.loadNpmTasks('grunt-protractor-runner');
+    grunt.loadNpmTasks('grunt-contrib-connect');
+    grunt.loadNpmTasks('grunt-protractor-webdriver');
+
+    grunt.initConfig({
+        sass: {
+            options: {
+                outputStyle: 'expanded'
+            },
+            dist: {
+                files: {
+                    'dist/gridstack.css': 'src/gridstack.scss',
+                    'dist/gridstack-extra.css': 'src/gridstack-extra.scss'
+                }
+            }
+        },
+
+        cssmin: {
+            dist: {
+                files: {
+                    'dist/gridstack.min.css': ['dist/gridstack.css'],
+                    'dist/gridstack-extra.min.css': ['dist/gridstack-extra.css']
+                }
+            }
+        },
+
+        copy: {
+            dist: {
+                files: {
+                    'dist/gridstack.js': ['src/gridstack.js'],
+                    'dist/gridstack.jQueryUI.js': ['src/gridstack.jQueryUI.js'],
+                }
+            }
+        },
+
+        uglify: {
+            options: {
+                sourceMap: true,
+                sourceMapName: 'dist/gridstack.min.map',
+                preserveComments: 'some'
+            },
+            dist: {
+                files: {
+                    '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']
+                }
+            }
+        },
+
+        jshint: {
+            all: ['src/*.js']
+        },
+
+        jscs: {
+            all: ['*.js', 'src/*.js', ],
+        },
+
+        watch: {
+            scripts: {
+                files: ['src/*.js'],
+                tasks: ['uglify', 'copy'],
+                options: {
+                },
+            },
+            styles: {
+                files: ['src/*.scss'],
+                tasks: ['sass', 'cssmin'],
+                options: {
+                },
+            }
+        },
+
+        protractor: {
+            options: {
+                configFile: 'protractor.conf.js',
+            },
+            all: {}
+        },
+
+        connect: {
+            all: {
+                options: {
+                    port: 8080,
+                    hostname: 'localhost',
+                    base: '.',
+                },
+            },
+        },
+
+        protractor_webdriver: {
+            all: {
+                options: {
+                    command: 'webdriver-manager start',
+                }
+            }
+        }
+    });
+
+    grunt.registerTask('default', ['sass', 'cssmin', 'jshint', 'jscs', 'copy', 'uglify']);
+    grunt.registerTask('e2e-test', ['connect', 'protractor_webdriver', 'protractor']);
+};
diff --git a/bower.json b/bower.json
index 34824238a..b125c3835 100644
--- a/bower.json
+++ b/bower.json
@@ -15,8 +15,8 @@
   ],
   "dependencies": {
     "lodash": ">= 4.14.2",
-    "jquery": ">= 3.1.0",
-    "jquery-ui": ">= 1.12.0"
+    "jquery": ">= 2.1.0",
+    "jquery-ui": ">= 1.11.0"
   },
   "keywords": [
     "gridstack",
diff --git a/dist/gridstack.all.js b/dist/gridstack.all.js
index c4e0d0305..6d7e8d83b 100644
--- a/dist/gridstack.all.js
+++ b/dist/gridstack.all.js
@@ -5,8 +5,8 @@
  * 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){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=-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())||"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}}};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())},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(void 0===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||void 0===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&&void 0!==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=void 0===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]=void 0===a[0]?[]:[a[0]],a[1]=void 0===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),void 0!==a.maxWidth&&(a.width=Math.min(a.width,a.maxWidth)),void 0!==a.maxHeight&&(a.height=Math.min(a.height,a.maxHeight)),void 0!==a.minWidth&&(a.width=Math.max(a.width,a.minWidth)),void 0!==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),void 0!==c&&c&&this._addedNodes.push(b.clone(a)),this._fixCollisions(a),this._packNodes(),this._notify(),a},i.prototype.removeNode=function(a,c){c=void 0===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(void 0===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),void 0!==a.maxWidth&&(d=Math.min(d,a.maxWidth)),void 0!==a.maxHeight&&(e=Math.min(e,a.maxHeight)),void 0!==a.minWidth&&(d=Math.max(d,a.minWidth)),void 0!==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),void 0!==a.maxWidth&&(d=Math.min(d,a.maxWidth)),void 0!==a.maxHeight&&(e=Math.min(e,a.maxHeight)),void 0!==a.minWidth&&(d=Math.max(d,a.minWidth)),void 0!==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.lastTriedX=b,a.lastTriedY=c,a.lastTriedWidth=d,a.lastTriedHeight=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),void 0!==e.handle_class&&(e.handleClass=e.handle_class,f("handle_class","handleClass")),void 0!==e.item_class&&(e.itemClass=e.item_class,f("item_class","itemClass")),void 0!==e.placeholder_class&&(e.placeholderClass=e.placeholder_class,f("placeholder_class","placeholderClass")),void 0!==e.placeholder_text&&(e.placeholderText=e.placeholder_text,f("placeholder_text","placeholderText")),void 0!==e.cell_height&&(e.cellHeight=e.cell_height,f("cell_height","cellHeight")),void 0!==e.vertical_margin&&(e.verticalMargin=e.vertical_margin,f("vertical_margin","verticalMargin")),void 0!==e.min_width&&(e.minWidth=e.min_width,f("min_width","minWidth")),void 0!==e.static_grid&&(e.staticGrid=e.static_grid,f("static_grid","staticGrid")),void 0!==e.is_nested&&(e.isNested=e.is_nested,f("is_nested","isNested")),void 0!==e.always_show_resize_handle&&(e.alwaysShowResizeHandle=e.always_show_resize_handle,f("always_show_resize_handle","alwaysShowResizeHandle")),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",disableOneColumnMode:e.disableOneColumnMode||!1,oneColumnModeClass:e.oneColumnModeClass||"grid-stack-one-column-mode",ddPlugin:null}),!1===this.opts.ddPlugin?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=void 0===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()&&!j.opts.disableOneColumnMode){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||(j.dd.draggable(a.el,"disable"),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);d.data("_gridstack_node")._grid===j&&j._setupRemovingTimeout(d)}).on(n,"dropout",function(b,c){var d=a(c.draggable);d.data("_gridstack_node")._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(!0===j.opts.acceptWidgets?".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);if(d.data("_gridstack_node")){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);var f=a(c.draggable).data("_gridstack_node_orig");void 0!==f&&void 0!==f._grid&&f._grid._triggerRemoveEvent(),a(c.helper).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.grid._addedNodes.push(d),j._triggerAddEvent(),j._triggerChangeEvent(),j.grid.endUpdate(),a(c.draggable).unbind("drag",p),a(c.draggable).removeData("_gridstack_node"),a(c.draggable).removeData("_gridstack_node_orig")})}};return j.prototype._triggerChangeEvent=function(a){var b=this.grid.getDirtyNodes(),c=!1,d=[];b&&b.length&&(d.push(b),c=!0),(c||!0===a)&&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&&void 0!==this._styles){var b,c="."+this.opts._class+" ."+this.opts.itemClass,d=this;if(void 0===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){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.grid.float&&k>f.grid.getGridHeight()?c._temporaryRemoved||(!0===f.opts.removable&&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;var l=void 0!==h?h:c.lastTriedWidth,m=void 0!==i?i:c.lastTriedHeight;!f.grid.canMoveNode(c,j,k,h,i)||c.lastTriedX===j&&c.lastTriedY===k&&c.lastTriedWidth===l&&c.lastTriedHeight===m||(c.lastTriedX=j,c.lastTriedY=k,c.lastTriedWidth=h,c.lastTriedHeight=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;if(f.placeholder.detach(),c.el=g,f.placeholder.hide(),c._isAboutToRemove){h=!0;b.data("_gridstack_node")._grid._triggerRemoveEvent(),b.removeData("_gridstack_node"),b.remove()}else 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"),g.find(".grid-stack-item").trigger("gsresizestop")),"resizestop"==d.type&&f.container.trigger("gsresizestop",g)}};this.dd.draggable(b,{start:h,stop:i,drag:g}).resizable(b,{start:h,stop:i,resize:g}),(c.noMove||this._isOneColumnMode()&&!f.opts.disableOneColumnMode||this.opts.disableDrag)&&this.dd.draggable(b,"disable"),(c.noResize||this._isOneColumnMode()&&!f.opts.disableOneColumnMode||this.opts.disableResize)&&this.dd.resizable(b,"disable"),b.attr("data-gs-locked",c.locked?"yes":null)},j.prototype._prepareElement=function(b,c){c=void 0!==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")),resizeHandles:b.attr("data-gs-resize-handles"),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),void 0!==c&&b.attr("data-gs-x",c),void 0!==d&&b.attr("data-gs-y",d),void 0!==e&&b.attr("data-gs-width",e),void 0!==f&&b.attr("data-gs-height",f),void 0!==g&&b.attr("data-gs-auto-position",g?"yes":null),void 0!==h&&b.attr("data-gs-min-width",h),void 0!==i&&b.attr("data-gs-max-width",i),void 0!==j&&b.attr("data-gs-min-height",j),void 0!==k&&b.attr("data-gs-max-height",k),void 0!==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=void 0===c||c,b=a(b);var d=b.data("_gridstack_node");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(),void 0===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");void 0!==f&&null!==f&&(f.noResize=!c,f.noResize||d._isOneColumnMode()&&!d.opts.disableOneColumnMode?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");void 0!==f&&null!==f&&(f.noMove=!c,f.noMove||d._isOneColumnMode()&&!d.opts.disableOneColumnMode?(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");void 0!==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");void 0!==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");void 0!==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");void 0!==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");void 0!==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(void 0!==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&&void 0!==b?b:d.width,c=null!==c&&void 0!==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&&void 0!==b?b:d.x,c=null!==c&&void 0!==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&&void 0!==b?b:f.x,c=null!==c&&void 0!==c?c:f.y,d=null!==d&&void 0!==d?d:f.width,e=null!==e&&void 0!==e?e:f.height,this.grid.moveNode(f,b,c,d,e)})},j.prototype.verticalMargin=function(a,b){if(void 0===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(void 0===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=void 0!==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=!0===a,this.enableMove(!a),this.enableResize(!a),this._setStaticClass()},j.prototype._setStaticClass=function(){!0===this.opts.staticGrid?this.container.addClass("grid-stack-static"):this.container.removeClass("grid-stack-static")},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),!0!==b&&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}),/**
+!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){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=-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())||"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}}};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())},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(void 0===e)return;this.moveNode(e,e.x,a.y+a.height,e.width,e.height,!0)}},i.prototype.whatIsHere=function(a,c,d,e){var f={x:a||0,y:c||0,width:d||1,height:e||1};return b.filter(this.nodes,b.bind(function(a){return g.isIntercepted(a,f)},this))},i.prototype.isAreaEmpty=function(a,b,c,d,e){if(b<0||b+d>this.height||a<0||a+c>this.width)return!1;var f=this.whatIsHere(a,b,c,d);return!f.length||e&&1===f.length&&f[0]===e},i.prototype.findFreeSpace=function(a,b,c){var d,e,f=null;for(a||(a=1),b||(b=1),d=0;d<=this.width-a&&!f;d++)for(e=0;e<=this.height-b&&!f;e++)this.isAreaEmpty(d,e,a,b,c)&&(f={x:d,y:e,w:a,h:b});return f},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&&void 0!==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=void 0===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),this.height&&a.height>this.height?a.height=this.height: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]=void 0===a[0]?[]:[a[0]],a[1]=void 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0!==c&&c&&this._addedNodes.push(b.clone(a)),this._fixCollisions(a),this._packNodes(),this._notify(),a},i.prototype.removeNode=function(a,c){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;if(!this.isAreaEmpty(d,e,f,g,c))return!1;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(void 0===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,c.y+c.height>this.height&&(l=!0)),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),void 0!==a.maxWidth&&(d=Math.min(d,a.maxWidth)),void 0!==a.maxHeight&&(e=Math.min(e,a.maxHeight)),void 0!==a.minWidth&&(d=Math.max(d,a.minWidth)),void 0!==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),void 0!==a.maxWidth&&(d=Math.min(d,a.maxWidth)),void 0!==a.maxHeight&&(e=Math.min(e,a.maxHeight)),void 0!==a.minWidth&&(d=Math.max(d,a.minWidth)),void 0!==a.minHeight&&(e=Math.max(e,a.minHeight)),a.x==b&&a.y==c&&a.width==d&&a.height==e)return a;if(!this.isAreaEmpty(b,c,d,e,a))return a;var g=a.width!=d;return a._dirty=!0,a.x=b,a.y=c,a.width=d,a.height=e,a.lastTriedX=b,a.lastTriedY=c,a.lastTriedWidth=d,a.lastTriedHeight=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),void 0!==e.handle_class&&(e.handleClass=e.handle_class,f("handle_class","handleClass")),void 0!==e.item_class&&(e.itemClass=e.item_class,f("item_class","itemClass")),void 0!==e.placeholder_class&&(e.placeholderClass=e.placeholder_class,f("placeholder_class","placeholderClass")),void 0!==e.placeholder_text&&(e.placeholderText=e.placeholder_text,f("placeholder_text","placeholderText")),void 0!==e.cell_height&&(e.cellHeight=e.cell_height,f("cell_height","cellHeight")),void 0!==e.vertical_margin&&(e.verticalMargin=e.vertical_margin,f("vertical_margin","verticalMargin")),void 0!==e.min_width&&(e.minWidth=e.min_width,f("min_width","minWidth")),void 0!==e.static_grid&&(e.staticGrid=e.static_grid,f("static_grid","staticGrid")),void 0!==e.is_nested&&(e.isNested=e.is_nested,f("is_nested","isNested")),void 0!==e.always_show_resize_handle&&(e.alwaysShowResizeHandle=e.always_show_resize_handle,f("always_show_resize_handle","alwaysShowResizeHandle")),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",disableOneColumnMode:e.disableOneColumnMode||!1,oneColumnModeClass:e.oneColumnModeClass||"grid-stack-one-column-mode",ddPlugin:null}),!1===this.opts.ddPlugin?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=void 0===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(j.opts.height||max_height+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._updateStyles(),this._updateHeightsOnResize=b.throttle(function(){j.cellHeight(j.cellWidth(),!1)},100),this.onResizeHandler=function(){if(h&&j._updateHeightsOnResize(),j._isOneColumnMode()&&!j.opts.disableOneColumnMode){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||(j.dd.draggable(a.el,"disable"),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);d.data("_gridstack_node")._grid===j&&j._setupRemovingTimeout(d)}).on(n,"dropout",function(b,c){var d=a(c.draggable);d.data("_gridstack_node")._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(!0===j.opts.acceptWidgets?".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);if(d.data("_gridstack_node")){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);var f=a(c.draggable).data("_gridstack_node_orig");void 0!==f&&void 0!==f._grid&&f._grid._triggerRemoveEvent(),a(c.helper).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.grid._addedNodes.push(d),j._triggerAddEvent(),j._triggerChangeEvent(),j.grid.endUpdate(),a(c.draggable).unbind("drag",p),a(c.draggable).removeData("_gridstack_node"),a(c.draggable).removeData("_gridstack_node_orig")})}};return j.prototype._triggerChangeEvent=function(a){var b=this.grid.getDirtyNodes(),c=!1,d=[];b&&b.length&&(d.push(b),c=!0),(c||!0===a)&&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&&void 0!==this._styles){var b,c="."+this.opts._class+" ."+this.opts.itemClass,d=this;if(void 0===a&&(a=this._styles._max||this.opts.height,this._initStyles(),this._updateContainerHeight()),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.opts.height||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){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){var l,m=!f.isAreaEmpty(j,k,c.width,c.height,c);m&&(l=f.grid.whatIsHere(j,k,c.width,c.height))&&1===l.length&&l[0].el===this.placeholder&&(m=!1),m?c._temporaryRemoved||(!0===f.opts.removable&&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;var n=void 0!==h?h:c.lastTriedWidth,o=void 0!==i?i:c.lastTriedHeight;!f.grid.canMoveNode(c,j,k,h,i)||c.lastTriedX===j&&c.lastTriedY===k&&c.lastTriedWidth===n&&c.lastTriedHeight===o||(c.lastTriedX=j,c.lastTriedY=k,c.lastTriedWidth=h,c.lastTriedHeight=i,f.grid.moveNode(c,j,k,h,i),f._updateContainerHeight())},h=function(g,h){if(f.opts.draggable.handle&&"dragstart"===g.type&&!a(g.originalEvent.target).closest(f.opts.draggable.handle).length)return!1;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"),"function"==typeof f.opts.draggable.start&&f.opts.draggable.start(g,h)},i=function(d,e){var g=a(this);if(g.data("_gridstack_node")){var h=!1;if(f.placeholder.detach(),c.el=g,f.placeholder.hide(),c._isAboutToRemove){h=!0;b.data("_gridstack_node")._grid._triggerRemoveEvent(),b.removeData("_gridstack_node"),b.remove()}else 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"),g.find(".grid-stack-item").trigger("gsresizestop")),"resizestop"==d.type&&f.container.trigger("gsresizestop",g)}};this.dd.draggable(b,{start:h,stop:i,drag:g}).resizable(b,{start:h,stop:i,resize:g}),(c.noMove||this._isOneColumnMode()&&!f.opts.disableOneColumnMode||this.opts.disableDrag)&&this.dd.draggable(b,"disable"),(c.noResize||this._isOneColumnMode()&&!f.opts.disableOneColumnMode||this.opts.disableResize)&&this.dd.resizable(b,"disable"),b.attr("data-gs-locked",c.locked?"yes":null)},j.prototype._prepareElement=function(b,c){c=void 0!==c&&c;var d=this;b=a(b),b.addClass(this.opts.itemClass);var e={x:parseInt(b.attr("data-gs-x"),10),y:parseInt(b.attr("data-gs-y"),10),width:parseInt(b.attr("data-gs-width"),10),height:parseInt(b.attr("data-gs-height"),10),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")),resizeHandles:b.attr("data-gs-resize-handles"),el:b,id:b.attr("data-gs-id"),_grid:d};if(!this.isAreaEmpty(e.x,e.y,e.width,e.height)){var f=this.findFreeSpace(e.width,e.height);if(f||(f=this.findFreeSpace(1,1)),!f)return;e.x=f.x,e.y=f.y,e.width=f.w,e.height=f.h}var h=d.grid.addNode(e,c);b.data("_gridstack_node",h),this._prepareElementsByNode(b,h)},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),void 0!==c&&b.attr("data-gs-x",c),void 0!==d&&b.attr("data-gs-y",d),void 0!==e&&b.attr("data-gs-width",e),void 0!==f&&b.attr("data-gs-height",f),void 0!==g&&b.attr("data-gs-auto-position",g?"yes":null),void 0!==h&&b.attr("data-gs-min-width",h),void 0!==i&&b.attr("data-gs-max-width",i),void 0!==j&&b.attr("data-gs-min-height",j),void 0!==k&&b.attr("data-gs-max-height",k),void 0!==l&&b.attr("data-gs-id",l),this.container.append(b),this.makeWidget(b),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=void 0===c||c,b=a(b);var d=b.data("_gridstack_node");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(),void 0===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");void 0===f||null===f||void 0===a.ui||d.opts.staticGrid||(f.noResize=!c,f.noResize||d._isOneColumnMode()&&!d.opts.disableOneColumnMode?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");void 0===f||null===f||void 0===a.ui||d.opts.staticGrid||(f.noMove=!c,f.noMove||d._isOneColumnMode()&&!d.opts.disableOneColumnMode?(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");void 0!==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");void 0!==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");void 0!==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");void 0!==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");void 0!==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(void 0!==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&&void 0!==b?b:d.width,c=null!==c&&void 0!==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&&void 0!==b?b:d.x,c=null!==c&&void 0!==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&&void 0!==b?b:f.x,c=null!==c&&void 0!==c?c:f.y,d=null!==d&&void 0!==d?d:f.width,e=null!==e&&void 0!==e?e:f.height,this.grid.moveNode(f,b,c,d,e)})},j.prototype.verticalMargin=function(a,b){if(void 0===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(void 0===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=void 0!==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,e){return this.grid.isAreaEmpty(a,b,c,d,e)},j.prototype.findFreeSpace=function(a,b){return this.grid.findFreeSpace(a,b)},j.prototype.setStatic=function(a){this.opts.staticGrid=!0===a,this.enableMove(!a),this.enableResize(!a),this._setStaticClass()},j.prototype._setStaticClass=function(){!0===this.opts.staticGrid?this.container.addClass("grid-stack-static"):this.container.removeClass("grid-stack-static")},j.prototype.refreshNodes=function(b){var c=this;this.removeAll(!1),this.container.find("."+this.opts.itemClass).each(function(b,d){a(d).off("dragstart dragstop drag resizestart resizestop resize"),c.makeWidget(d)}),this.opts.staticGrid&&b||(b?this.disable():this.enable())},j.prototype.getCellFromAbsolutePixel=function(a){var b=this.container.offset(),c=this.container.position();return a={left:a.left-b.left+c.left,top:a.top-b.top+c.top},this.getCellFromPixel(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),!0!==b&&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 1.0.0-dev
  * http://troolee.github.io/gridstack.js/
  * (c) 2014-2017 Pavel Reznikov, Dylan Weiss
diff --git a/dist/gridstack.js b/dist/gridstack.js
index 3f4bf80f3..8cb2257cb 100644
--- a/dist/gridstack.js
+++ b/dist/gridstack.js
@@ -204,17 +204,52 @@
             if (typeof collisionNode == 'undefined') {
                 return;
             }
+
             this.moveNode(collisionNode, collisionNode.x, node.y + node.height,
                 collisionNode.width, collisionNode.height, true);
         }
     };
 
-    GridStackEngine.prototype.isAreaEmpty = function(x, y, width, height) {
-        var nn = {x: x || 0, y: y || 0, width: width || 1, height: height || 1};
-        var collisionNode = _.find(this.nodes, _.bind(function(n) {
+    GridStackEngine.prototype.whatIsHere = function(x, y, width, height) {
+    	var nn = {x: x || 0, y: y || 0, width: width || 1, height: height || 1};
+        var collisionNodes = _.filter(this.nodes, _.bind(function(n) {
             return Utils.isIntercepted(n, nn);
         }, this));
-        return collisionNode === null || typeof collisionNode === 'undefined';
+        return collisionNodes;
+    };
+
+    GridStackEngine.prototype.isAreaEmpty = function(x, y, width, height, exceptNode) {
+    	// first check if is not out of bounds
+    	if (y < 0 || y + height > this.height || x < 0 || x + width > this.width) {
+    		return false;
+    	}
+        var collisionNodes = this.whatIsHere(x, y, width, height);
+        return (!collisionNodes.length || (exceptNode && collisionNodes.length === 1 && collisionNodes[0] === exceptNode));
+    };
+
+    GridStackEngine.prototype.findFreeSpace = function(w, h, forNode) {
+        var freeSpace = null,
+            i, j;
+
+            // first free for 1x1 or we have specified width and height
+            if (!w) { w = 1; }
+            if (!h) { h = 1; }
+
+            for (i = 0; i <= (this.width - w); i++) {
+                if (freeSpace) {
+                    break;
+                }
+                for (j = 0; j <= (this.height - h); j++) {
+                    if (freeSpace) {
+                        break;
+                    }
+                    if (this.isAreaEmpty(i, j, w, h, forNode)) {
+                    	freeSpace = {x: i, y: j, w: w, h: h};
+                    }
+                }
+            }
+
+            return freeSpace;
     };
 
     GridStackEngine.prototype._sortNodes = function(dir) {
@@ -287,7 +322,9 @@
             node.width = 1;
         }
 
-        if (node.height < 1) {
+        if (this.height && (node.height > this.height)) {
+            node.height = this.height;
+        } else if (node.height < 1) {
             node.height = 1;
         }
 
@@ -372,8 +409,9 @@
     };
 
     GridStackEngine.prototype.removeNode = function(node, detachNode) {
-        detachNode = typeof detachNode === 'undefined' ? true : detachNode;
-        this._removedNodes.push(_.clone(node));
+        if (!node) {
+            return;
+        }
         node._id = null;
         this.nodes = _.without(this.nodes, node);
         this._packNodes();
@@ -390,6 +428,10 @@
             return true;
         }
 
+        if (!this.isAreaEmpty(x, y, width, height, node)) {
+            return false;
+        }
+
         var clonedNode;
         var clone = new GridStackEngine(
             this.width,
@@ -419,6 +461,11 @@
         }
         if (this.height) {
             res &= clone.getGridHeight() <= this.height;
+
+            // always allow moving the one out of bounds
+            if (node.y + node.height > this.height) {
+                res = true;
+            }
         }
 
         return res;
@@ -474,6 +521,10 @@
             return node;
         }
 
+        if (!this.isAreaEmpty(x, y, width, height, node)) {
+            return node;
+        }
+
         var resizing = node.width != width;
         node._dirty = true;
 
@@ -664,7 +715,7 @@
                     maxHeight = Math.max(maxHeight, n.y + n.height);
                 }
             });
-            self._updateStyles(maxHeight + 10);
+            self._updateStyles(self.opts.height || (max_height + 10));
         }, this.opts.float, this.opts.height);
 
         if (this.opts.auto) {
@@ -691,6 +742,9 @@
 
         this._updateContainerHeight();
 
+        // setting styles also for empty grids
+        this._updateStyles();
+
         this._updateHeightsOnResize = _.throttle(function() {
             self.cellHeight(self.cellWidth(), false);
         }, 100);
@@ -945,7 +999,9 @@
         var getHeight;
 
         if (typeof maxHeight == 'undefined') {
-            maxHeight = this._styles._max;
+            maxHeight = this._styles._max || this.opts.height;
+            this._initStyles();
+            this._updateContainerHeight();
         }
         this._initStyles();
         this._updateContainerHeight();
@@ -1007,7 +1063,7 @@
         if (this.grid._updateCounter) {
             return;
         }
-        var height = this.grid.getGridHeight();
+        var height = this.opts.height || this.grid.getGridHeight();
         this.container.attr('data-gs-current-height', height);
         if (!this.opts.cellHeight) {
             return ;
@@ -1071,8 +1127,18 @@
             }
 
             if (event.type == 'drag') {
-                if (x < 0 || x >= self.grid.width || y < 0 || (!self.grid.float && y > self.grid.getGridHeight())) {
-                    if (!node._temporaryRemoved) {
+                var cannotPutHere = !self.isAreaEmpty(x, y, node.width, node.height, node),
+                    whatIsHere;
+
+                if (cannotPutHere) {
+                    whatIsHere = self.grid.whatIsHere(x, y, node.width, node.height);
+                    if (whatIsHere && whatIsHere.length === 1 && whatIsHere[0].el === this.placeholder) {
+                        cannotPutHere = false;
+                    }
+                }
+
+                if (cannotPutHere) {
+                	if (!node._temporaryRemoved) {
                         if (self.opts.removable === true) {
                             self._setupRemovingTimeout(el);
                         }
@@ -1125,6 +1191,14 @@
         };
 
         var onStartMoving = function(event, ui) {
+
+        	if (self.opts.draggable.handle && event.type === 'dragstart') {
+                // if handle specified, don't allow drag from anywhere else
+                if (!$(event.originalEvent.target).closest(self.opts.draggable.handle).length) {
+                    return false;
+                }
+            }
+
             self.container.append(self.placeholder);
             var o = $(this);
             self.grid.cleanNodes();
@@ -1148,6 +1222,10 @@
             if (event.type == 'resizestart') {
                 o.find('.grid-stack-item').trigger('resizestart');
             }
+
+            if (typeof self.opts.draggable.start === 'function') {
+            	self.opts.draggable.start(event, ui);
+            }
         };
 
         var onEndMoving = function(event, ui) {
@@ -1235,11 +1313,12 @@
         el = $(el);
 
         el.addClass(this.opts.itemClass);
-        var node = self.grid.addNode({
-            x: el.attr('data-gs-x'),
-            y: el.attr('data-gs-y'),
-            width: el.attr('data-gs-width'),
-            height: el.attr('data-gs-height'),
+
+        var props = {
+            x: parseInt(el.attr('data-gs-x'), 10),
+            y: parseInt(el.attr('data-gs-y'), 10),
+            width: parseInt(el.attr('data-gs-width'), 10),
+            height: parseInt(el.attr('data-gs-height'), 10),
             maxWidth: el.attr('data-gs-max-width'),
             minWidth: el.attr('data-gs-min-width'),
             maxHeight: el.attr('data-gs-max-height'),
@@ -1252,7 +1331,24 @@
             el: el,
             id: el.attr('data-gs-id'),
             _grid: self
-        }, triggerAddEvent);
+        };
+
+        if (!this.isAreaEmpty(props.x, props.y, props.width, props.height)) {
+        	var freeSpace = this.findFreeSpace(props.width, props.height);
+        	if (!freeSpace) {
+        		freeSpace = this.findFreeSpace(1, 1);
+        	}
+        	if (freeSpace) {
+        		props.x = freeSpace.x;
+        		props.y = freeSpace.y;
+        		props.width = freeSpace.w;
+        		props.height = freeSpace.h;
+        	} else {
+        		return;
+        	}
+        }
+
+        var node = self.grid.addNode(props, triggerAddEvent);
         el.data('_gridstack_node', node);
 
         this._prepareElementsByNode(el, node);
@@ -1280,10 +1376,8 @@
         if (typeof maxHeight != 'undefined') { el.attr('data-gs-max-height', maxHeight); }
         if (typeof id != 'undefined') { el.attr('data-gs-id', id); }
         this.container.append(el);
-        this._prepareElement(el, true);
-        this._triggerAddEvent();
-        this._updateContainerHeight();
-        this._triggerChangeEvent(true);
+
+        this.makeWidget(el);
 
         return el;
     };
@@ -1352,7 +1446,7 @@
         el.each(function(index, el) {
             el = $(el);
             var node = el.data('_gridstack_node');
-            if (typeof node == 'undefined' || node === null) {
+            if (typeof node == 'undefined' || node === null || typeof $.ui === 'undefined' || self.opts.staticGrid) {
                 return;
             }
 
@@ -1372,7 +1466,8 @@
         el.each(function(index, el) {
             el = $(el);
             var node = el.data('_gridstack_node');
-            if (typeof node == 'undefined' || node === null) {
+
+            if (typeof node == 'undefined' || node === null || typeof $.ui === 'undefined' || self.opts.staticGrid) {
                 return;
             }
 
@@ -1498,6 +1593,7 @@
     };
 
     GridStack.prototype._updateElement = function(el, callback) {
+
         el = $(el).first();
         var node = el.data('_gridstack_node');
         if (typeof node == 'undefined' || node === null) {
@@ -1611,8 +1707,12 @@
         this._updateContainerHeight();
     };
 
-    GridStack.prototype.isAreaEmpty = function(x, y, width, height) {
-        return this.grid.isAreaEmpty(x, y, width, height);
+    GridStack.prototype.isAreaEmpty = function(x, y, width, height, exceptNode) {
+        return this.grid.isAreaEmpty(x, y, width, height, exceptNode);
+    };
+
+    GridStack.prototype.findFreeSpace = function(w, h) {
+        return this.grid.findFreeSpace(w, h);
     };
 
     GridStack.prototype.setStatic = function(staticValue) {
@@ -1632,6 +1732,40 @@
         }
     };
 
+    GridStack.prototype.refreshNodes = function(isDisabled) {
+        var that = this;
+
+        this.removeAll(false);
+
+        this.container.find('.' + this.opts.itemClass).each(function(k, node){
+            $(node).off('dragstart dragstop drag resizestart resizestop resize');
+            that.makeWidget(node);
+        });
+
+        if (this.opts.staticGrid && isDisabled) {
+        	return;
+        }
+
+		if (isDisabled) {
+			this.disable();
+		} else {
+			this.enable();
+		}
+    };
+
+    GridStack.prototype.getCellFromAbsolutePixel = function(nodeOffset) {
+        var offset = this.container.offset(),
+            position = this.container.position();
+
+        // offset relative to gridstack container itself
+        nodeOffset = {
+            left: nodeOffset.left - offset.left + position.left,
+            top: nodeOffset.top - offset.top + position.top
+        };
+
+        return this.getCellFromPixel(nodeOffset);
+    };
+
     GridStack.prototype._updateNodeWidths = function(oldWidth, newWidth) {
         this.grid._sortNodes();
         this.grid.batchUpdate();
diff --git a/dist/gridstack.min.js b/dist/gridstack.min.js
index a38f653df..e3a0b215b 100644
--- a/dist/gridstack.min.js
+++ b/dist/gridstack.min.js
@@ -5,6 +5,6 @@
  * 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){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=-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())||"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}}};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())},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(void 0===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||void 0===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&&void 0!==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=void 0===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]=void 0===a[0]?[]:[a[0]],a[1]=void 0===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),void 0!==a.maxWidth&&(a.width=Math.min(a.width,a.maxWidth)),void 0!==a.maxHeight&&(a.height=Math.min(a.height,a.maxHeight)),void 0!==a.minWidth&&(a.width=Math.max(a.width,a.minWidth)),void 0!==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),void 0!==c&&c&&this._addedNodes.push(b.clone(a)),this._fixCollisions(a),this._packNodes(),this._notify(),a},i.prototype.removeNode=function(a,c){c=void 0===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(void 0===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),void 0!==a.maxWidth&&(d=Math.min(d,a.maxWidth)),void 0!==a.maxHeight&&(e=Math.min(e,a.maxHeight)),void 0!==a.minWidth&&(d=Math.max(d,a.minWidth)),void 0!==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),void 0!==a.maxWidth&&(d=Math.min(d,a.maxWidth)),void 0!==a.maxHeight&&(e=Math.min(e,a.maxHeight)),void 0!==a.minWidth&&(d=Math.max(d,a.minWidth)),void 0!==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.lastTriedX=b,a.lastTriedY=c,a.lastTriedWidth=d,a.lastTriedHeight=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),void 0!==e.handle_class&&(e.handleClass=e.handle_class,f("handle_class","handleClass")),void 0!==e.item_class&&(e.itemClass=e.item_class,f("item_class","itemClass")),void 0!==e.placeholder_class&&(e.placeholderClass=e.placeholder_class,f("placeholder_class","placeholderClass")),void 0!==e.placeholder_text&&(e.placeholderText=e.placeholder_text,f("placeholder_text","placeholderText")),void 0!==e.cell_height&&(e.cellHeight=e.cell_height,f("cell_height","cellHeight")),void 0!==e.vertical_margin&&(e.verticalMargin=e.vertical_margin,f("vertical_margin","verticalMargin")),void 0!==e.min_width&&(e.minWidth=e.min_width,f("min_width","minWidth")),void 0!==e.static_grid&&(e.staticGrid=e.static_grid,f("static_grid","staticGrid")),void 0!==e.is_nested&&(e.isNested=e.is_nested,f("is_nested","isNested")),void 0!==e.always_show_resize_handle&&(e.alwaysShowResizeHandle=e.always_show_resize_handle,f("always_show_resize_handle","alwaysShowResizeHandle")),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",disableOneColumnMode:e.disableOneColumnMode||!1,oneColumnModeClass:e.oneColumnModeClass||"grid-stack-one-column-mode",ddPlugin:null}),!1===this.opts.ddPlugin?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=void 0===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()&&!j.opts.disableOneColumnMode){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||(j.dd.draggable(a.el,"disable"),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);d.data("_gridstack_node")._grid===j&&j._setupRemovingTimeout(d)}).on(n,"dropout",function(b,c){var d=a(c.draggable);d.data("_gridstack_node")._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(!0===j.opts.acceptWidgets?".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);if(d.data("_gridstack_node")){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);var f=a(c.draggable).data("_gridstack_node_orig");void 0!==f&&void 0!==f._grid&&f._grid._triggerRemoveEvent(),a(c.helper).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.grid._addedNodes.push(d),j._triggerAddEvent(),j._triggerChangeEvent(),j.grid.endUpdate(),a(c.draggable).unbind("drag",p),a(c.draggable).removeData("_gridstack_node"),a(c.draggable).removeData("_gridstack_node_orig")})}};return j.prototype._triggerChangeEvent=function(a){var b=this.grid.getDirtyNodes(),c=!1,d=[];b&&b.length&&(d.push(b),c=!0),(c||!0===a)&&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&&void 0!==this._styles){var b,c="."+this.opts._class+" ."+this.opts.itemClass,d=this;if(void 0===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){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.grid.float&&k>f.grid.getGridHeight()?c._temporaryRemoved||(!0===f.opts.removable&&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;var l=void 0!==h?h:c.lastTriedWidth,m=void 0!==i?i:c.lastTriedHeight;!f.grid.canMoveNode(c,j,k,h,i)||c.lastTriedX===j&&c.lastTriedY===k&&c.lastTriedWidth===l&&c.lastTriedHeight===m||(c.lastTriedX=j,c.lastTriedY=k,c.lastTriedWidth=h,c.lastTriedHeight=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;if(f.placeholder.detach(),c.el=g,f.placeholder.hide(),c._isAboutToRemove){h=!0;b.data("_gridstack_node")._grid._triggerRemoveEvent(),b.removeData("_gridstack_node"),b.remove()}else 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"),g.find(".grid-stack-item").trigger("gsresizestop")),"resizestop"==d.type&&f.container.trigger("gsresizestop",g)}};this.dd.draggable(b,{start:h,stop:i,drag:g}).resizable(b,{start:h,stop:i,resize:g}),(c.noMove||this._isOneColumnMode()&&!f.opts.disableOneColumnMode||this.opts.disableDrag)&&this.dd.draggable(b,"disable"),(c.noResize||this._isOneColumnMode()&&!f.opts.disableOneColumnMode||this.opts.disableResize)&&this.dd.resizable(b,"disable"),b.attr("data-gs-locked",c.locked?"yes":null)},j.prototype._prepareElement=function(b,c){c=void 0!==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")),resizeHandles:b.attr("data-gs-resize-handles"),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),void 0!==c&&b.attr("data-gs-x",c),void 0!==d&&b.attr("data-gs-y",d),void 0!==e&&b.attr("data-gs-width",e),void 0!==f&&b.attr("data-gs-height",f),void 0!==g&&b.attr("data-gs-auto-position",g?"yes":null),void 0!==h&&b.attr("data-gs-min-width",h),void 0!==i&&b.attr("data-gs-max-width",i),void 0!==j&&b.attr("data-gs-min-height",j),void 0!==k&&b.attr("data-gs-max-height",k),void 0!==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=void 0===c||c,b=a(b);var d=b.data("_gridstack_node");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(),void 0===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");void 0!==f&&null!==f&&(f.noResize=!c,f.noResize||d._isOneColumnMode()&&!d.opts.disableOneColumnMode?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");void 0!==f&&null!==f&&(f.noMove=!c,f.noMove||d._isOneColumnMode()&&!d.opts.disableOneColumnMode?(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");void 0!==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");void 0!==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");void 0!==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");void 0!==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");void 0!==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(void 0!==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&&void 0!==b?b:d.width,c=null!==c&&void 0!==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&&void 0!==b?b:d.x,c=null!==c&&void 0!==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&&void 0!==b?b:f.x,c=null!==c&&void 0!==c?c:f.y,d=null!==d&&void 0!==d?d:f.width,e=null!==e&&void 0!==e?e:f.height,this.grid.moveNode(f,b,c,d,e)})},j.prototype.verticalMargin=function(a,b){if(void 0===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(void 0===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=void 0!==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=!0===a,this.enableMove(!a),this.enableResize(!a),this._setStaticClass()},j.prototype._setStaticClass=function(){!0===this.opts.staticGrid?this.container.addClass("grid-stack-static"):this.container.removeClass("grid-stack-static")},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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+!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){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+"`. 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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())},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(void 0===e)return;this.moveNode(e,e.x,a.y+a.height,e.width,e.height,!0)}},i.prototype.whatIsHere=function(a,c,d,e){var f={x:a||0,y:c||0,width:d||1,height:e||1};return b.filter(this.nodes,b.bind(function(a){return g.isIntercepted(a,f)},this))},i.prototype.isAreaEmpty=function(a,b,c,d,e){if(b<0||b+d>this.height||a<0||a+c>this.width)return!1;var f=this.whatIsHere(a,b,c,d);return!f.length||e&&1===f.length&&f[0]===e},i.prototype.findFreeSpace=function(a,b,c){var d,e,f=null;for(a||(a=1),b||(b=1),d=0;d<=this.width-a&&!f;d++)for(e=0;e<=this.height-b&&!f;e++)this.isAreaEmpty(d,e,a,b,c)&&(f={x:d,y:e,w:a,h:b});return f},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&&void 0!==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=void 0===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),this.height&&a.height>this.height?a.height=this.height: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]=void 0===a[0]?[]:[a[0]],a[1]=void 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0!==c&&c&&this._addedNodes.push(b.clone(a)),this._fixCollisions(a),this._packNodes(),this._notify(),a},i.prototype.removeNode=function(a,c){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;if(!this.isAreaEmpty(d,e,f,g,c))return!1;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(void 0===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,c.y+c.height>this.height&&(l=!0)),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),void 0!==a.maxWidth&&(d=Math.min(d,a.maxWidth)),void 0!==a.maxHeight&&(e=Math.min(e,a.maxHeight)),void 0!==a.minWidth&&(d=Math.max(d,a.minWidth)),void 0!==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),void 0!==a.maxWidth&&(d=Math.min(d,a.maxWidth)),void 0!==a.maxHeight&&(e=Math.min(e,a.maxHeight)),void 0!==a.minWidth&&(d=Math.max(d,a.minWidth)),void 0!==a.minHeight&&(e=Math.max(e,a.minHeight)),a.x==b&&a.y==c&&a.width==d&&a.height==e)return a;if(!this.isAreaEmpty(b,c,d,e,a))return a;var g=a.width!=d;return a._dirty=!0,a.x=b,a.y=c,a.width=d,a.height=e,a.lastTriedX=b,a.lastTriedY=c,a.lastTriedWidth=d,a.lastTriedHeight=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),void 0!==e.handle_class&&(e.handleClass=e.handle_class,f("handle_class","handleClass")),void 0!==e.item_class&&(e.itemClass=e.item_class,f("item_class","itemClass")),void 0!==e.placeholder_class&&(e.placeholderClass=e.placeholder_class,f("placeholder_class","placeholderClass")),void 0!==e.placeholder_text&&(e.placeholderText=e.placeholder_text,f("placeholder_text","placeholderText")),void 0!==e.cell_height&&(e.cellHeight=e.cell_height,f("cell_height","cellHeight")),void 0!==e.vertical_margin&&(e.verticalMargin=e.vertical_margin,f("vertical_margin","verticalMargin")),void 0!==e.min_width&&(e.minWidth=e.min_width,f("min_width","minWidth")),void 0!==e.static_grid&&(e.staticGrid=e.static_grid,f("static_grid","staticGrid")),void 0!==e.is_nested&&(e.isNested=e.is_nested,f("is_nested","isNested")),void 0!==e.always_show_resize_handle&&(e.alwaysShowResizeHandle=e.always_show_resize_handle,f("always_show_resize_handle","alwaysShowResizeHandle")),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",disableOneColumnMode:e.disableOneColumnMode||!1,oneColumnModeClass:e.oneColumnModeClass||"grid-stack-one-column-mode",ddPlugin:null}),!1===this.opts.ddPlugin?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=void 0===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(j.opts.height||max_height+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._updateStyles(),this._updateHeightsOnResize=b.throttle(function(){j.cellHeight(j.cellWidth(),!1)},100),this.onResizeHandler=function(){if(h&&j._updateHeightsOnResize(),j._isOneColumnMode()&&!j.opts.disableOneColumnMode){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||(j.dd.draggable(a.el,"disable"),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);d.data("_gridstack_node")._grid===j&&j._setupRemovingTimeout(d)}).on(n,"dropout",function(b,c){var d=a(c.draggable);d.data("_gridstack_node")._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(!0===j.opts.acceptWidgets?".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);if(d.data("_gridstack_node")){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);var f=a(c.draggable).data("_gridstack_node_orig");void 0!==f&&void 0!==f._grid&&f._grid._triggerRemoveEvent(),a(c.helper).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.grid._addedNodes.push(d),j._triggerAddEvent(),j._triggerChangeEvent(),j.grid.endUpdate(),a(c.draggable).unbind("drag",p),a(c.draggable).removeData("_gridstack_node"),a(c.draggable).removeData("_gridstack_node_orig")})}};return j.prototype._triggerChangeEvent=function(a){var b=this.grid.getDirtyNodes(),c=!1,d=[];b&&b.length&&(d.push(b),c=!0),(c||!0===a)&&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&&void 0!==this._styles){var b,c="."+this.opts._class+" ."+this.opts.itemClass,d=this;if(void 0===a&&(a=this._styles._max||this.opts.height,this._initStyles(),this._updateContainerHeight()),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.opts.height||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){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){var l,m=!f.isAreaEmpty(j,k,c.width,c.height,c);m&&(l=f.grid.whatIsHere(j,k,c.width,c.height))&&1===l.length&&l[0].el===this.placeholder&&(m=!1),m?c._temporaryRemoved||(!0===f.opts.removable&&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;var n=void 0!==h?h:c.lastTriedWidth,o=void 0!==i?i:c.lastTriedHeight;!f.grid.canMoveNode(c,j,k,h,i)||c.lastTriedX===j&&c.lastTriedY===k&&c.lastTriedWidth===n&&c.lastTriedHeight===o||(c.lastTriedX=j,c.lastTriedY=k,c.lastTriedWidth=h,c.lastTriedHeight=i,f.grid.moveNode(c,j,k,h,i),f._updateContainerHeight())},h=function(g,h){if(f.opts.draggable.handle&&"dragstart"===g.type&&!a(g.originalEvent.target).closest(f.opts.draggable.handle).length)return!1;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"),"function"==typeof f.opts.draggable.start&&f.opts.draggable.start(g,h)},i=function(d,e){var g=a(this);if(g.data("_gridstack_node")){var h=!1;if(f.placeholder.detach(),c.el=g,f.placeholder.hide(),c._isAboutToRemove){h=!0;b.data("_gridstack_node")._grid._triggerRemoveEvent(),b.removeData("_gridstack_node"),b.remove()}else 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"),g.find(".grid-stack-item").trigger("gsresizestop")),"resizestop"==d.type&&f.container.trigger("gsresizestop",g)}};this.dd.draggable(b,{start:h,stop:i,drag:g}).resizable(b,{start:h,stop:i,resize:g}),(c.noMove||this._isOneColumnMode()&&!f.opts.disableOneColumnMode||this.opts.disableDrag)&&this.dd.draggable(b,"disable"),(c.noResize||this._isOneColumnMode()&&!f.opts.disableOneColumnMode||this.opts.disableResize)&&this.dd.resizable(b,"disable"),b.attr("data-gs-locked",c.locked?"yes":null)},j.prototype._prepareElement=function(b,c){c=void 0!==c&&c;var d=this;b=a(b),b.addClass(this.opts.itemClass);var e={x:parseInt(b.attr("data-gs-x"),10),y:parseInt(b.attr("data-gs-y"),10),width:parseInt(b.attr("data-gs-width"),10),height:parseInt(b.attr("data-gs-height"),10),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")),resizeHandles:b.attr("data-gs-resize-handles"),el:b,id:b.attr("data-gs-id"),_grid:d};if(!this.isAreaEmpty(e.x,e.y,e.width,e.height)){var f=this.findFreeSpace(e.width,e.height);if(f||(f=this.findFreeSpace(1,1)),!f)return;e.x=f.x,e.y=f.y,e.width=f.w,e.height=f.h}var h=d.grid.addNode(e,c);b.data("_gridstack_node",h),this._prepareElementsByNode(b,h)},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),void 0!==c&&b.attr("data-gs-x",c),void 0!==d&&b.attr("data-gs-y",d),void 0!==e&&b.attr("data-gs-width",e),void 0!==f&&b.attr("data-gs-height",f),void 0!==g&&b.attr("data-gs-auto-position",g?"yes":null),void 0!==h&&b.attr("data-gs-min-width",h),void 0!==i&&b.attr("data-gs-max-width",i),void 0!==j&&b.attr("data-gs-min-height",j),void 0!==k&&b.attr("data-gs-max-height",k),void 0!==l&&b.attr("data-gs-id",l),this.container.append(b),this.makeWidget(b),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=void 0===c||c,b=a(b);var d=b.data("_gridstack_node");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(),void 0===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");void 0===f||null===f||void 0===a.ui||d.opts.staticGrid||(f.noResize=!c,f.noResize||d._isOneColumnMode()&&!d.opts.disableOneColumnMode?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");void 0===f||null===f||void 0===a.ui||d.opts.staticGrid||(f.noMove=!c,f.noMove||d._isOneColumnMode()&&!d.opts.disableOneColumnMode?(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");void 0!==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");void 0!==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");void 0!==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");void 0!==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");void 0!==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(void 0!==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&&void 0!==b?b:d.width,c=null!==c&&void 0!==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&&void 0!==b?b:d.x,c=null!==c&&void 0!==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&&void 0!==b?b:f.x,c=null!==c&&void 0!==c?c:f.y,d=null!==d&&void 0!==d?d:f.width,e=null!==e&&void 0!==e?e:f.height,this.grid.moveNode(f,b,c,d,e)})},j.prototype.verticalMargin=function(a,b){if(void 0===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(void 0===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=void 0!==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,e){return this.grid.isAreaEmpty(a,b,c,d,e)},j.prototype.findFreeSpace=function(a,b){return this.grid.findFreeSpace(a,b)},j.prototype.setStatic=function(a){this.opts.staticGrid=!0===a,this.enableMove(!a),this.enableResize(!a),this._setStaticClass()},j.prototype._setStaticClass=function(){!0===this.opts.staticGrid?this.container.addClass("grid-stack-static"):this.container.removeClass("grid-stack-static")},j.prototype.refreshNodes=function(b){var c=this;this.removeAll(!1),this.container.find("."+this.opts.itemClass).each(function(b,d){a(d).off("dragstart dragstop drag resizestart resizestop resize"),c.makeWidget(d)}),this.opts.staticGrid&&b||(b?this.disable():this.enable())},j.prototype.getCellFromAbsolutePixel=function(a){var b=this.container.offset(),c=this.container.position();return a={left:a.left-b.left+c.left,top:a.top-b.top+c.top},this.getCellFromPixel(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),!0!==b&&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"),
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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 3d1355c85..5f38a947b 100644
--- a/dist/gridstack.min.map
+++ b/dist/gridstack.min.map
@@ -1 +1 @@
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\ No newline at end of file
diff --git a/src/gridstack.css b/src/gridstack.css
new file mode 100644
index 000000000..7feeaffa4
--- /dev/null
+++ b/src/gridstack.css
@@ -0,0 +1,322 @@
+:root .grid-stack-item > .ui-resizable-handle {
+  filter: none;
+}
+
+.grid-stack {
+  position: relative;
+}
+.grid-stack .grid-stack-placeholder > .placeholder-content {
+  border: 1px dashed lightgray;
+  margin: 0;
+  position: absolute;
+  top: 0;
+  left: 10px;
+  right: 10px;
+  bottom: 0;
+  width: auto;
+  z-index: 0 !important;
+}
+.grid-stack > .grid-stack-item {
+  min-width: 8.33333333%;
+  position: absolute;
+  padding: 0;
+}
+.grid-stack > .grid-stack-item > .grid-stack-item-content {
+  margin: 0;
+  position: absolute;
+  top: 0;
+  left: 10px;
+  right: 10px;
+  bottom: 0;
+  width: auto;
+  z-index: 0 !important;
+  overflow-x: hidden;
+  overflow-y: auto;
+}
+.grid-stack > .grid-stack-item > .ui-resizable-handle {
+  position: absolute;
+  font-size: 0.1px;
+  display: block;
+  -ms-touch-action: none;
+  touch-action: none;
+}
+.grid-stack > .grid-stack-item.ui-resizable-disabled > .ui-resizable-handle, .grid-stack > .grid-stack-item.ui-resizable-autohide > .ui-resizable-handle {
+  display: none;
+}
+.grid-stack > .grid-stack-item.ui-draggable-dragging, .grid-stack > .grid-stack-item.ui-resizable-resizing {
+  z-index: 100;
+}
+.grid-stack > .grid-stack-item.ui-draggable-dragging > .grid-stack-item-content,
+.grid-stack > .grid-stack-item.ui-draggable-dragging > .grid-stack-item-content, .grid-stack > .grid-stack-item.ui-resizable-resizing > .grid-stack-item-content,
+.grid-stack > .grid-stack-item.ui-resizable-resizing > .grid-stack-item-content {
+  box-shadow: 1px 4px 6px rgba(0, 0, 0, 0.2);
+  opacity: 0.8;
+}
+.grid-stack > .grid-stack-item > .ui-resizable-se,
+.grid-stack > .grid-stack-item > .ui-resizable-sw {
+  text-align: right;
+  color: gray;
+  padding: 2px 3px 0 0;
+  margin: 0;
+  font: normal normal normal 10px/1 FontAwesome;
+  font-size: inherit;
+  text-rendering: auto;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+.grid-stack > .grid-stack-item > .ui-resizable-se::before,
+.grid-stack > .grid-stack-item > .ui-resizable-sw::before {
+  content: "\f065";
+}
+.grid-stack > .grid-stack-item > .ui-resizable-se {
+  display: inline-block;
+  -webkit-transform: rotate(90deg);
+  -moz-transform: rotate(90deg);
+  -ms-transform: rotate(90deg);
+  -o-transform: rotate(90deg);
+  transform: rotate(90deg);
+}
+.grid-stack > .grid-stack-item > .ui-resizable-nw {
+  cursor: nw-resize;
+  width: 20px;
+  height: 20px;
+  left: 10px;
+  top: 0;
+}
+.grid-stack > .grid-stack-item > .ui-resizable-n {
+  cursor: n-resize;
+  height: 10px;
+  top: 0;
+  left: 25px;
+  right: 25px;
+}
+.grid-stack > .grid-stack-item > .ui-resizable-ne {
+  cursor: ne-resize;
+  width: 20px;
+  height: 20px;
+  right: 10px;
+  top: 0;
+}
+.grid-stack > .grid-stack-item > .ui-resizable-e {
+  cursor: e-resize;
+  width: 10px;
+  right: 10px;
+  top: 15px;
+  bottom: 15px;
+}
+.grid-stack > .grid-stack-item > .ui-resizable-se {
+  cursor: se-resize;
+  width: 20px;
+  height: 20px;
+  right: 10px;
+  bottom: 0;
+}
+.grid-stack > .grid-stack-item > .ui-resizable-s {
+  cursor: s-resize;
+  height: 10px;
+  left: 25px;
+  bottom: 0;
+  right: 25px;
+}
+.grid-stack > .grid-stack-item > .ui-resizable-sw {
+  cursor: sw-resize;
+  width: 20px;
+  height: 20px;
+  left: 10px;
+  bottom: 0;
+}
+.grid-stack > .grid-stack-item > .ui-resizable-w {
+  cursor: w-resize;
+  width: 10px;
+  left: 10px;
+  top: 15px;
+  bottom: 15px;
+}
+.grid-stack > .grid-stack-item[data-gs-width='1'] {
+  width: 8.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-x='1'] {
+  left: 8.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-min-width='1'] {
+  min-width: 8.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-max-width='1'] {
+  max-width: 8.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-width='2'] {
+  width: 16.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-x='2'] {
+  left: 16.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-min-width='2'] {
+  min-width: 16.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-max-width='2'] {
+  max-width: 16.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-width='3'] {
+  width: 25%;
+}
+.grid-stack > .grid-stack-item[data-gs-x='3'] {
+  left: 25%;
+}
+.grid-stack > .grid-stack-item[data-gs-min-width='3'] {
+  min-width: 25%;
+}
+.grid-stack > .grid-stack-item[data-gs-max-width='3'] {
+  max-width: 25%;
+}
+.grid-stack > .grid-stack-item[data-gs-width='4'] {
+  width: 33.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-x='4'] {
+  left: 33.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-min-width='4'] {
+  min-width: 33.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-max-width='4'] {
+  max-width: 33.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-width='5'] {
+  width: 41.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-x='5'] {
+  left: 41.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-min-width='5'] {
+  min-width: 41.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-max-width='5'] {
+  max-width: 41.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-width='6'] {
+  width: 50%;
+}
+.grid-stack > .grid-stack-item[data-gs-x='6'] {
+  left: 50%;
+}
+.grid-stack > .grid-stack-item[data-gs-min-width='6'] {
+  min-width: 50%;
+}
+.grid-stack > .grid-stack-item[data-gs-max-width='6'] {
+  max-width: 50%;
+}
+.grid-stack > .grid-stack-item[data-gs-width='7'] {
+  width: 58.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-x='7'] {
+  left: 58.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-min-width='7'] {
+  min-width: 58.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-max-width='7'] {
+  max-width: 58.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-width='8'] {
+  width: 66.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-x='8'] {
+  left: 66.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-min-width='8'] {
+  min-width: 66.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-max-width='8'] {
+  max-width: 66.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-width='9'] {
+  width: 75%;
+}
+.grid-stack > .grid-stack-item[data-gs-x='9'] {
+  left: 75%;
+}
+.grid-stack > .grid-stack-item[data-gs-min-width='9'] {
+  min-width: 75%;
+}
+.grid-stack > .grid-stack-item[data-gs-max-width='9'] {
+  max-width: 75%;
+}
+.grid-stack > .grid-stack-item[data-gs-width='10'] {
+  width: 83.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-x='10'] {
+  left: 83.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-min-width='10'] {
+  min-width: 83.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-max-width='10'] {
+  max-width: 83.33333333%;
+}
+.grid-stack > .grid-stack-item[data-gs-width='11'] {
+  width: 91.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-x='11'] {
+  left: 91.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-min-width='11'] {
+  min-width: 91.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-max-width='11'] {
+  max-width: 91.66666667%;
+}
+.grid-stack > .grid-stack-item[data-gs-width='12'] {
+  width: 100%;
+}
+.grid-stack > .grid-stack-item[data-gs-x='12'] {
+  left: 100%;
+}
+.grid-stack > .grid-stack-item[data-gs-min-width='12'] {
+  min-width: 100%;
+}
+.grid-stack > .grid-stack-item[data-gs-max-width='12'] {
+  max-width: 100%;
+}
+.grid-stack.grid-stack-animate, .grid-stack.grid-stack-animate .grid-stack-item {
+  -webkit-transition: left 0.3s, top 0.3s, height 0.3s, width 0.3s;
+  -moz-transition: left 0.3s, top 0.3s, height 0.3s, width 0.3s;
+  -ms-transition: left 0.3s, top 0.3s, height 0.3s, width 0.3s;
+  -o-transition: left 0.3s, top 0.3s, height 0.3s, width 0.3s;
+  transition: left 0.3s, top 0.3s, height 0.3s, width 0.3s;
+}
+.grid-stack.grid-stack-animate .grid-stack-item.ui-draggable-dragging, .grid-stack.grid-stack-animate .grid-stack-item.ui-resizable-resizing, .grid-stack.grid-stack-animate .grid-stack-item.grid-stack-placeholder {
+  -webkit-transition: left 0s, top 0s, height 0s, width 0s;
+  -moz-transition: left 0s, top 0s, height 0s, width 0s;
+  -ms-transition: left 0s, top 0s, height 0s, width 0s;
+  -o-transition: left 0s, top 0s, height 0s, width 0s;
+  transition: left 0s, top 0s, height 0s, width 0s;
+}
+
+/** Uncomment this to show bottom-left resize handle **/
+/*
+.grid-stack > .grid-stack-item > .ui-resizable-sw {
+    display: inline-block;
+    -webkit-transform: rotate(180deg);
+    -moz-transform: rotate(180deg);
+    -ms-transform: rotate(180deg);
+    -o-transform: rotate(180deg);
+    transform: rotate(180deg);
+}
+*/
+/*
+@media (max-width: 768px) {
+  .grid-stack-item {
+    position: relative !important;
+    width: auto !important;
+    left: 0 !important;
+    top: auto !important;
+    margin-bottom: 20px;
+  }
+  .grid-stack-item .ui-resizable-handle {
+    display: none;
+  }
+
+  .grid-stack {
+    height: auto !important;
+  }
+}
+*/
diff --git a/src/gridstack.js b/src/gridstack.js
index 3f4bf80f3..15fd232e2 100644
--- a/src/gridstack.js
+++ b/src/gridstack.js
@@ -1,5 +1,5 @@
 /**
- * gridstack.js 1.0.0-dev
+ * gridstack.js 0.3.0-dev
  * http://troolee.github.io/gridstack.js/
  * (c) 2014-2017 Pavel Reznikov, Dylan Weiss
  * gridstack.js may be freely distributed under the MIT license.
@@ -191,30 +191,65 @@
     };
 
     GridStackEngine.prototype._fixCollisions = function(node) {
-        var self = this;
-        this._sortNodes(-1);
+        // var self = this;
+        // this._sortNodes(-1);
+
+        // var nn = node;
+        // var hasLocked = Boolean(_.find(this.nodes, function(n) { return n.locked; }));
+        // if (!this.float && !hasLocked) {
+        //     nn = {x: 0, y: node.y, width: this.width, height: node.height};
+        // }
+        // while (true) {
+        //     var collisionNode = _.find(this.nodes, _.bind(Utils._collisionNodeCheck, {node: node, nn: nn}));
+        //     if (typeof collisionNode == 'undefined') {
+        //         return;
+        //     }
+
+        //     this.moveNode(collisionNode, collisionNode.x, node.y + node.height,
+        //         collisionNode.width, collisionNode.height, true);
+        // }
+    };
+
+    GridStackEngine.prototype.whatIsHere = function(x, y, width, height) {
+    	var nn = {x: x || 0, y: y || 0, width: width || 1, height: height || 1};
+        var collisionNodes = _.filter(this.nodes, _.bind(function(n) {
+            return Utils.isIntercepted(n, nn);
+        }, this));
+        return collisionNodes;
+    };
 
-        var nn = node;
-        var hasLocked = Boolean(_.find(this.nodes, function(n) { return n.locked; }));
-        if (!this.float && !hasLocked) {
-            nn = {x: 0, y: node.y, width: this.width, height: node.height};
-        }
-        while (true) {
-            var collisionNode = _.find(this.nodes, _.bind(Utils._collisionNodeCheck, {node: node, nn: nn}));
-            if (typeof collisionNode == 'undefined') {
-                return;
-            }
-            this.moveNode(collisionNode, collisionNode.x, node.y + node.height,
-                collisionNode.width, collisionNode.height, true);
-        }
+    GridStackEngine.prototype.isAreaEmpty = function(x, y, width, height, exceptNode) {
+    	// first check if is not out of bounds
+    	if (y < 0 || y + height > this.height || x < 0 || x + width > this.width) {
+    		return false;
+    	}
+        var collisionNodes = this.whatIsHere(x, y, width, height);
+        return (!collisionNodes.length || (exceptNode && collisionNodes.length === 1 && collisionNodes[0] === exceptNode));
     };
 
-    GridStackEngine.prototype.isAreaEmpty = function(x, y, width, height) {
-        var nn = {x: x || 0, y: y || 0, width: width || 1, height: height || 1};
-        var collisionNode = _.find(this.nodes, _.bind(function(n) {
-            return Utils.isIntercepted(n, nn);
-        }, this));
-        return collisionNode === null || typeof collisionNode === 'undefined';
+    GridStackEngine.prototype.findFreeSpace = function(w, h, forNode) {
+        var freeSpace = null,
+            i, j;
+
+            // first free for 1x1 or we have specified width and height
+            if (!w) { w = 1; }
+            if (!h) { h = 1; }
+
+            for (i = 0; i <= (this.width - w); i++) {
+                if (freeSpace) {
+                    break;
+                }
+                for (j = 0; j <= (this.height - h); j++) {
+                    if (freeSpace) {
+                        break;
+                    }
+                    if (this.isAreaEmpty(i, j, w, h, forNode)) {
+                    	freeSpace = {x: i, y: j, w: w, h: h};
+                    }
+                }
+            }
+
+            return freeSpace;
     };
 
     GridStackEngine.prototype._sortNodes = function(dir) {
@@ -287,7 +322,9 @@
             node.width = 1;
         }
 
-        if (node.height < 1) {
+        if (this.height && (node.height > this.height)) {
+            node.height = this.height;
+        } else if (node.height < 1) {
             node.height = 1;
         }
 
@@ -372,8 +409,9 @@
     };
 
     GridStackEngine.prototype.removeNode = function(node, detachNode) {
-        detachNode = typeof detachNode === 'undefined' ? true : detachNode;
-        this._removedNodes.push(_.clone(node));
+        if (!node) {
+            return;
+        }
         node._id = null;
         this.nodes = _.without(this.nodes, node);
         this._packNodes();
@@ -390,6 +428,10 @@
             return true;
         }
 
+        if (!this.isAreaEmpty(x, y, width, height, node)) {
+            return false;
+        }
+
         var clonedNode;
         var clone = new GridStackEngine(
             this.width,
@@ -419,6 +461,11 @@
         }
         if (this.height) {
             res &= clone.getGridHeight() <= this.height;
+
+            // always allow moving the one out of bounds
+            if (node.y + node.height > this.height) {
+                res = true;
+            }
         }
 
         return res;
@@ -474,6 +521,10 @@
             return node;
         }
 
+        if (!this.isAreaEmpty(x, y, width, height, node)) {
+            return node;
+        }
+
         var resizing = node.width != width;
         node._dirty = true;
 
@@ -664,7 +715,7 @@
                     maxHeight = Math.max(maxHeight, n.y + n.height);
                 }
             });
-            self._updateStyles(maxHeight + 10);
+            self._updateStyles(self.opts.height || (max_height + 10));
         }, this.opts.float, this.opts.height);
 
         if (this.opts.auto) {
@@ -691,6 +742,9 @@
 
         this._updateContainerHeight();
 
+        // setting styles also for empty grids
+        this._updateStyles();
+
         this._updateHeightsOnResize = _.throttle(function() {
             self.cellHeight(self.cellWidth(), false);
         }, 100);
@@ -945,7 +999,9 @@
         var getHeight;
 
         if (typeof maxHeight == 'undefined') {
-            maxHeight = this._styles._max;
+            maxHeight = this._styles._max || this.opts.height;
+            this._initStyles();
+            this._updateContainerHeight();
         }
         this._initStyles();
         this._updateContainerHeight();
@@ -1007,7 +1063,7 @@
         if (this.grid._updateCounter) {
             return;
         }
-        var height = this.grid.getGridHeight();
+        var height = this.opts.height || this.grid.getGridHeight();
         this.container.attr('data-gs-current-height', height);
         if (!this.opts.cellHeight) {
             return ;
@@ -1071,8 +1127,18 @@
             }
 
             if (event.type == 'drag') {
-                if (x < 0 || x >= self.grid.width || y < 0 || (!self.grid.float && y > self.grid.getGridHeight())) {
-                    if (!node._temporaryRemoved) {
+                var cannotPutHere = !self.isAreaEmpty(x, y, node.width, node.height, node),
+                    whatIsHere;
+
+                if (cannotPutHere) {
+                    whatIsHere = self.grid.whatIsHere(x, y, node.width, node.height);
+                    if (whatIsHere && whatIsHere.length === 1 && whatIsHere[0].el === this.placeholder) {
+                        cannotPutHere = false;
+                    }
+                }
+
+                if (cannotPutHere) {
+                	if (!node._temporaryRemoved) {
                         if (self.opts.removable === true) {
                             self._setupRemovingTimeout(el);
                         }
@@ -1125,6 +1191,14 @@
         };
 
         var onStartMoving = function(event, ui) {
+
+        	if (self.opts.draggable.handle && event.type === 'dragstart') {
+                // if handle specified, don't allow drag from anywhere else
+                if (!$(event.originalEvent.target).closest(self.opts.draggable.handle).length) {
+                    return false;
+                }
+            }
+
             self.container.append(self.placeholder);
             var o = $(this);
             self.grid.cleanNodes();
@@ -1148,6 +1222,10 @@
             if (event.type == 'resizestart') {
                 o.find('.grid-stack-item').trigger('resizestart');
             }
+
+            if (typeof self.opts.draggable.start === 'function') {
+            	self.opts.draggable.start(event, ui);
+            }
         };
 
         var onEndMoving = function(event, ui) {
@@ -1235,11 +1313,12 @@
         el = $(el);
 
         el.addClass(this.opts.itemClass);
-        var node = self.grid.addNode({
-            x: el.attr('data-gs-x'),
-            y: el.attr('data-gs-y'),
-            width: el.attr('data-gs-width'),
-            height: el.attr('data-gs-height'),
+
+        var props = {
+            x: parseInt(el.attr('data-gs-x'), 10),
+            y: parseInt(el.attr('data-gs-y'), 10),
+            width: parseInt(el.attr('data-gs-width'), 10),
+            height: parseInt(el.attr('data-gs-height'), 10),
             maxWidth: el.attr('data-gs-max-width'),
             minWidth: el.attr('data-gs-min-width'),
             maxHeight: el.attr('data-gs-max-height'),
@@ -1252,7 +1331,24 @@
             el: el,
             id: el.attr('data-gs-id'),
             _grid: self
-        }, triggerAddEvent);
+        };
+
+        if (!this.isAreaEmpty(props.x, props.y, props.width, props.height)) {
+        	var freeSpace = this.findFreeSpace(props.width, props.height);
+        	if (!freeSpace) {
+        		freeSpace = this.findFreeSpace(1, 1);
+        	}
+        	if (freeSpace) {
+        		props.x = freeSpace.x;
+        		props.y = freeSpace.y;
+        		props.width = freeSpace.w;
+        		props.height = freeSpace.h;
+        	} else {
+        		return;
+        	}
+        }
+
+        var node = self.grid.addNode(props, triggerAddEvent);
         el.data('_gridstack_node', node);
 
         this._prepareElementsByNode(el, node);
@@ -1280,10 +1376,8 @@
         if (typeof maxHeight != 'undefined') { el.attr('data-gs-max-height', maxHeight); }
         if (typeof id != 'undefined') { el.attr('data-gs-id', id); }
         this.container.append(el);
-        this._prepareElement(el, true);
-        this._triggerAddEvent();
-        this._updateContainerHeight();
-        this._triggerChangeEvent(true);
+
+        this.makeWidget(el);
 
         return el;
     };
@@ -1352,7 +1446,7 @@
         el.each(function(index, el) {
             el = $(el);
             var node = el.data('_gridstack_node');
-            if (typeof node == 'undefined' || node === null) {
+            if (typeof node == 'undefined' || node === null || typeof $.ui === 'undefined' || self.opts.staticGrid) {
                 return;
             }
 
@@ -1372,7 +1466,8 @@
         el.each(function(index, el) {
             el = $(el);
             var node = el.data('_gridstack_node');
-            if (typeof node == 'undefined' || node === null) {
+
+            if (typeof node == 'undefined' || node === null || typeof $.ui === 'undefined' || self.opts.staticGrid) {
                 return;
             }
 
@@ -1498,6 +1593,7 @@
     };
 
     GridStack.prototype._updateElement = function(el, callback) {
+
         el = $(el).first();
         var node = el.data('_gridstack_node');
         if (typeof node == 'undefined' || node === null) {
@@ -1611,8 +1707,12 @@
         this._updateContainerHeight();
     };
 
-    GridStack.prototype.isAreaEmpty = function(x, y, width, height) {
-        return this.grid.isAreaEmpty(x, y, width, height);
+    GridStack.prototype.isAreaEmpty = function(x, y, width, height, exceptNode) {
+        return this.grid.isAreaEmpty(x, y, width, height, exceptNode);
+    };
+
+    GridStack.prototype.findFreeSpace = function(w, h) {
+        return this.grid.findFreeSpace(w, h);
     };
 
     GridStack.prototype.setStatic = function(staticValue) {
@@ -1632,6 +1732,40 @@
         }
     };
 
+    GridStack.prototype.refreshNodes = function(isDisabled) {
+        var that = this;
+
+        this.removeAll(false);
+
+        this.container.find('.' + this.opts.itemClass).each(function(k, node){
+            $(node).off('dragstart dragstop drag resizestart resizestop resize');
+            that.makeWidget(node);
+        });
+
+        if (this.opts.staticGrid && isDisabled) {
+        	return;
+        }
+
+		if (isDisabled) {
+			this.disable();
+		} else {
+			this.enable();
+		}
+    };
+
+    GridStack.prototype.getCellFromAbsolutePixel = function(nodeOffset) {
+        var offset = this.container.offset(),
+            position = this.container.position();
+
+        // offset relative to gridstack container itself
+        nodeOffset = {
+            left: nodeOffset.left - offset.left + position.left,
+            top: nodeOffset.top - offset.top + position.top
+        };
+
+        return this.getCellFromPixel(nodeOffset);
+    };
+
     GridStack.prototype._updateNodeWidths = function(oldWidth, newWidth) {
         this.grid._sortNodes();
         this.grid.batchUpdate();