Fixed some tests involving transforms and elements

21 files changed, 317 insertions, 416 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index e0ee5cb..b6623ca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,8 @@ The document follows the conventions described in [“Keep a CHANGELOG”](http:
 - added `SVG.$()` and `SVG.$$()` which will query for one/multiple elements
 - added `text()` method to `SVG.Path` to create a textPath from this path (#705)
 - added `SVG.HTMLNode` which is the object wrapped around html nodes to put something in them
+- added `dispatch()` method on `SVG.Element` which returns the dispatched event for event cancelation (#550)
+- added `isRoot()` on `SVG.Doc` (#809)
 - added `random` option and `randomize()` method to `SVG.Color` -> __TODO!__
 - added `precision()` method to round numeric element attributes -> __TODO!__
 - added a linter during the npm build process
@@ -28,6 +30,7 @@ The document follows the conventions described in [“Keep a CHANGELOG”](http:
 - removed feature to set style with css string (e.g. "fill:none;display:block;")
 - removed `loaded()` and `error()` method on `SVG.Image` (#706)
 - removed sub-pixel offset fix
+- removed `SVG.Nested` (#809)
 
 ### Changed
 - gradients now have there corresponding node as type and not only radial/linear
@@ -60,10 +63,10 @@ The document follows the conventions described in [“Keep a CHANGELOG”](http:
 - default constructor now has an optional `node` argument which is used to consruct the object e.g. `new SVG.Rect(rectNode)`
 - SVG.Elements constructor now tries to import svgjs:data from the node
 - `SVG.on()` calls the listener in the context of the passed object. el.on always uses the svg.js object as context
-- `SVG.on()` and `el.on()` now accepts multiple comma or space seperated events e.g. "mousedown, foo bar" (#727)
+- `SVG.on()/off()` and `el.on()/off()` now accepts multiple comma or space separated events e.g. "mousedown, foo bar" (#727)
 - Matrices now apply transformations like `scale`, `translate`, etc... by left multiplying them to simplify transformations
 - Transforming an element is now much simpler
--
+- merged `SVG.Doc` and `SVG.Nested`, added `isRoot()` on `SVG.Doc()` (#809)
 
 ### Fixed
 - fixed a bug in clipping and masking where empty nodes persists after removal -> __TODO!__
diff --git a/dist/svg.js b/dist/svg.js
index 77f8721..025903f 100644
--- a/dist/svg.js
+++ b/dist/svg.js
@@ -6,7 +6,7 @@
 * @copyright Wout Fierens <wout@mick-wout.com>
 * @license MIT
 *
-* BUILT: Fri Mar 02 2018 11:37:53 GMT+1100 (AEDT)
+* BUILT: Fri Mar 02 2018 12:48:21 GMT+1100 (AEDT)
 */;
 
 (function(root, factory) {
@@ -110,7 +110,7 @@ SVG.adopt = function (node) {
   if (!node) return null
 
   // make sure a node isn't already adopted
-  if (node.instance) return node.instance
+  if (node.instance instanceof SVG.Element) return node.instance
 
   if (!(node instanceof window.SVGElement)) {
     return new SVG.HtmlNode(node)
@@ -121,12 +121,14 @@ SVG.adopt = function (node) {
 
   // adopt with element-specific settings
   if (node.nodeName === 'svg') {
-    element = node.parentNode instanceof window.SVGElement ? new SVG.Nested(node) : new SVG.Doc(node)
+    element = new SVG.Doc(node)
   } else if (node.nodeName === 'linearGradient' || node.nodeName === 'radialGradient') {
     element = new SVG.Gradient(node)
   } else if (SVG[capitalize(node.nodeName)]) {
     element = new SVG[capitalize(node.nodeName)](node)
-  } else { element = new SVG.Parent(node) }
+  } else {
+    element = new SVG.Parent(node)
+  }
 
   return element
 }
@@ -999,15 +1001,9 @@ SVG.HtmlNode = SVG.invent({
   extend: {
     add: function (element, i) {
       element = createElement(element)
-      if (element instanceof SVG.Nested) {
-        element = new SVG.Doc(element.node)
-        element.setData(JSON.parse(element.node.getAttribute('svgjs:data')) || {})
-      }
 
-      if (i === null) {
-        this.node.appendChild(element.node)
-      } else if (element.node !== this.node.children[i]) {
-        this.node.insertBefore(element.node, this.node.children[i])
+      if (element.node !== this.node.children[i]) {
+        this.node.insertBefore(element.node, this.node.children[i] || null)
       }
 
       return this
@@ -1025,8 +1021,8 @@ SVG.HtmlNode = SVG.invent({
 SVG.Element = SVG.invent({
   // Initialize node
   create: function (node) {
-    // last fired event on node
-    this._event = null
+    // event listener
+    this.events = {}
 
     // initialize data object
     this.dom = {}
@@ -1036,6 +1032,7 @@ SVG.Element = SVG.invent({
     if (this.node) {
       this.type = node.nodeName
       this.node.instance = this
+      this.events = node.events || {}
 
       if (node.hasAttribute('svgjs:data')) {
         // pull svgjs data from the dom (getAttributeNS doesn't work in html5)
@@ -1239,7 +1236,8 @@ SVG.Element = SVG.invent({
 
     // Get parent document
     doc: function () {
-      return this instanceof SVG.Doc ? this : this.parent(SVG.Doc)
+      var p = this.parent(SVG.Doc)
+      return p && p.doc()
     },
 
     // Get defs
@@ -2236,35 +2234,6 @@ SVG.extend(SVG.FX, {
 
 /* global abcdef, arrayToMatrix, parseMatrix, unitCircle, mag */
 
-// Produce a matrix from affine parameters
-SVG.compose = function (o, cx, cy) {
-  // Set the defaults
-  var tx = o.translateX || 0
-  var ty = o.translateY || 0
-  var theta = o.theta || 0
-  var sx = o.scaleX || 1
-  var sy = o.scaleY || 1
-  var lam = o.shear || 0
-  cx = cx || 0
-  cy = cy || 0
-
-  // Calculate the trigonometric values
-  var ct = Math.cos(theta * Math.PI / 180)
-  var st = Math.sin(theta * Math.PI / 180)
-
-  // Calculate the matrix components directly
-  var a = sx * ct
-  var b = sx * st
-  var c = lam * sx * ct - sy * st
-  var d = lam * sx * st + sy * ct
-  var e = -sx * ct * (cx + cy * lam) + sy * st * cy + tx + cx
-  var f = -sx * st * (cx + cy * lam) - sy * ct * cy + ty + cy
-
-  // Construct a new matrix and return it
-  var matrix = new SVG.Matrix([a, b, c, d, e, f])
-  return matrix
-}
-
 SVG.Matrix = SVG.invent({
   // Initialize
   create: function (source) {
@@ -2290,58 +2259,8 @@ SVG.Matrix = SVG.invent({
   // Add methods
   extend: {
 
-    // Decompose a matrix into the affine parameters needed to form it
-    decompose: function (cx, cy) {
-      // Choose a default center point
-      cx = cx || 0
-      cy = cy || 0
-
-      // Get the paramaters of the current matrix
-      var a = this.a
-      var b = this.b
-      var c = this.c
-      var d = this.d
-      var e = this.e
-      var f = this.f
-
-      // Project the first basis vector onto the unit circle
-      var circle = unitCircle(a, b)
-      var theta = circle.theta
-      var ct = circle.cos
-      var st = circle.sin
-
-      // Work out the transformation parameters
-      var signX = Math.sign(a * ct + b * st)
-      var sx = signX * mag(a, b)
-      var lam = (st * d + ct * c) / (ct * a + st * b)
-      var sy = mag(lam * a - c, d - lam * b)
-      var tx = e - cx + cx * ct * sx + cy * (lam * ct * sx - st * sy)
-      var ty = f - cy + cx * st * sx + cy * (lam * st * sx + ct * sy)
-
-      // Package and return the parameters
-      return {
-
-        // Bundle the affine parameters
-        translateX: tx,
-        translateY: ty,
-        rotate: theta,
-        scaleX: sx,
-        scaleY: sy,
-        shear: lam,
-
-      // Bundle the matrix parameters
-        a: this.a,
-        b: this.b,
-        c: this.c,
-        d: this.d,
-        e: this.e,
-        f: this.f,
-
-      // Return the new origin point
-        x: this.e,
-        y: this.f,
-        matrix: new SVG.Matrix(this)
-      }
+    clone: function () {
+      return new SVG.Matrix(this)
     },
 
     // Clone matrix
@@ -2398,10 +2317,6 @@ SVG.Matrix = SVG.invent({
       return transformer
     },
 
-    clone: function () {
-      return new SVG.Matrix(this)
-    },
-
     // Morph one matrix into another
     morph: function (matrix) {
       // store new destination
@@ -2589,7 +2504,7 @@ SVG.Matrix = SVG.invent({
          This is needed because FF does not return the transformation matrix
          for the inner coordinate system when getScreenCTM() is called on nested svgs.
          However all other Browsers do that */
-      if (this instanceof SVG.Nested) {
+      if (this instanceof SVG.Doc && !this.isRoot()) {
         var rect = this.rect(1, 1)
         var m = rect.node.getScreenCTM()
         rect.remove()
@@ -3194,10 +3109,8 @@ SVG.Parent = SVG.invent({
     add: function (element, i) {
       element = createElement(element)
 
-      if (i == null) {
-        this.node.appendChild(element.node)
-      } else if (element.node !== this.node.children[i]) {
-        this.node.insertBefore(element.node, this.node.children[i])
+      if (element.node !== this.node.children[i]) {
+        this.node.insertBefore(element.node, this.node.children[i] || null)
       }
 
       return this
@@ -3270,7 +3183,7 @@ SVG.extend(SVG.Parent, {
   flatten: function (parent) {
     if (this instanceof SVG.Defs) return this
 
-    parent = parent || (this instanceof SVG.Doc ? this : this.parent(SVG.Parent))
+    parent = parent || (this instanceof SVG.Doc && this.isRoot() ? this : this.parent(SVG.Parent))
 
     this.each(function () {
       if (this instanceof SVG.Defs) return this
@@ -3296,6 +3209,7 @@ SVG.Container = SVG.invent({
 })
 
 // Add events to elements
+
 ;[ 'click',
   'dblclick',
   'mousedown',
@@ -3303,14 +3217,14 @@ SVG.Container = SVG.invent({
   'mouseover',
   'mouseout',
   'mousemove',
-  // , 'mouseenter' -> not supported by IE
-  // , 'mouseleave' -> not supported by IE
+  'mouseenter',
+  'mouseleave',
   'touchstart',
   'touchmove',
   'touchleave',
   'touchend',
   'touchcancel' ].forEach(function (event) {
-  // add event to SVG.Element
+    // add event to SVG.Element
     SVG.Element.prototype[event] = function (f) {
     // bind event to element rather than element node
       SVG.on(this, event, f)
@@ -3318,32 +3232,31 @@ SVG.Container = SVG.invent({
     }
   })
 
-// Initialize listeners stack
-SVG.listeners = []
-SVG.handlerMap = []
 SVG.listenerId = 0
 
 // Add event binder in the SVG namespace
 SVG.on = function (node, events, listener, binding, options) {
+  var l = listener.bind(binding || node)
+  var n = node instanceof SVG.Element ? node.node : node
+
+  // ensure instance object for nodes which are not adopted
+  n.instance = n.instance || {events: {}}
+
+  var bag = n.instance.events
+
+  // add id to listener
+  if (!listener._svgjsListenerId) { listener._svgjsListenerId = ++SVG.listenerId }
+
   events.split(SVG.regex.delimiter).forEach(function (event) {
-    // create listener, get object-index
-    var l = listener.bind(binding || node)
-    var n = node instanceof SVG.Element ? node.node : node
-    var index = (SVG.handlerMap.indexOf(n) + 1 || SVG.handlerMap.push(n)) - 1
     var ev = event.split('.')[0]
     var ns = event.split('.')[1] || '*'
 
     // ensure valid object
-    SVG.listeners[index] = SVG.listeners[index] || {}
-    SVG.listeners[index][ev] = SVG.listeners[index][ev] || {}
-    SVG.listeners[index][ev][ns] = SVG.listeners[index][ev][ns] || {}
-
-    if (!listener._svgjsListenerId) {
-      listener._svgjsListenerId = ++SVG.listenerId
-    }
+    bag[ev] = bag[ev] || {}
+    bag[ev][ns] = bag[ev][ns] || {}
 
     // reference listener
-    SVG.listeners[index][ev][ns][listener._svgjsListenerId] = l
+    bag[ev][ns][listener._svgjsListenerId] = l
 
     // add listener
     n.addEventListener(ev, l, options || false)
@@ -3351,92 +3264,85 @@ SVG.on = function (node, events, listener, binding, options) {
 }
 
 // Add event unbinder in the SVG namespace
-SVG.off = function (node, event, listener) {
-  var index = SVG.handlerMap.indexOf(node)
-  var ev = event && event.split('.')[0]
-  var ns = event && event.split('.')[1]
-  var namespace = ''
-
-  if (index === -1) return
+SVG.off = function (node, events, listener, options) {
+  var n = node instanceof SVG.Element ? node.node : node
+  if (!n.instance) return
 
-  if (listener) {
-    if (typeof listener === 'function') listener = listener._svgjsListenerId
+  // listener can be a function or a number
+  if (typeof listener === 'function') {
+    listener = listener._svgjsListenerId
     if (!listener) return
+  }
 
-    // remove listener reference
-    if (SVG.listeners[index][ev] && SVG.listeners[index][ev][ns || '*']) {
-      // remove listener
-      node.removeEventListener(ev, SVG.listeners[index][ev][ns || '*'][listener], false)
+  var bag = n.instance.events
 
-      delete SVG.listeners[index][ev][ns || '*'][listener]
-    }
-  } else if (ns && ev) {
-    // remove all listeners for a namespaced event
-    if (SVG.listeners[index][ev] && SVG.listeners[index][ev][ns]) {
-      for (listener in SVG.listeners[index][ev][ns]) {
-        SVG.off(node, [ev, ns].join('.'), listener)
+  ;(events || '').split(SVG.regex.delimiter).forEach(function (event) {
+    var ev = event && event.split('.')[0]
+    var ns = event && event.split('.')[1]
+    var namespace, l
+
+    if (listener) {
+      // remove listener reference
+      if (bag[ev] && bag[ev][ns || '*']) {
+        // removeListener
+        n.removeEventListener(ev, bag[ev][ns || '*'][listener], options || false)
+
+        delete bag[ev][ns || '*'][listener]
       }
+    } else if (ev && ns) {
+      // remove all listeners for a namespaced event
+      if (bag[ev] && bag[ev][ns]) {
+        for (l in bag[ev][ns]) { SVG.off(n, [ev, ns].join('.'), l) }
 
-      delete SVG.listeners[index][ev][ns]
-    }
-  } else if (ns) {
-    // remove all listeners for a specific namespace
-    for (event in SVG.listeners[index]) {
-      for (namespace in SVG.listeners[index][event]) {
-        if (ns === namespace) {
-          SVG.off(node, [event, ns].join('.'))
+        delete bag[ev][ns]
+      }
+    } else if (ns) {
+      // remove all listeners for a specific namespace
+      for (event in bag) {
+        for (namespace in bag[event]) {
+          if (ns === namespace) { SVG.off(n, [event, ns].join('.')) }
         }
       }
-    }
-  } else if (ev) {
-    // remove all listeners for the event
-    if (SVG.listeners[index][ev]) {
-      for (namespace in SVG.listeners[index][ev]) {
-        SVG.off(node, [ev, namespace].join('.'))
+    } else if (ev) {
+      // remove all listeners for the event
+      if (bag[ev]) {
+        for (namespace in bag[ev]) { SVG.off(n, [ev, namespace].join('.')) }
+
+        delete bag[ev]
       }
+    } else {
+      // remove all listeners on a given node
+      for (event in bag) { SVG.off(n, event) }
 
-      delete SVG.listeners[index][ev]
-    }
-  } else {
-    // remove all listeners on a given node
-    for (event in SVG.listeners[index]) {
-      SVG.off(node, event)
+      n.instance.events = {}
     }
-
-    delete SVG.listeners[index]
-    delete SVG.handlerMap[index]
-  }
+  })
 }
 
-//
 SVG.extend(SVG.Element, {
   // Bind given event to listener
   on: function (event, listener, binding, options) {
     SVG.on(this, event, listener, binding, options)
     return this
   },
-
   // Unbind event from listener
   off: function (event, listener) {
     SVG.off(this.node, event, listener)
     return this
   },
-
-  // Fire given event
-  fire: function (event, data) {
+  dispatch: function (event, data) {
     // Dispatch event
     if (event instanceof window.Event) {
       this.node.dispatchEvent(event)
     } else {
       this.node.dispatchEvent(event = new window.CustomEvent(event, {detail: data, cancelable: true}))
     }
-
-    this._event = event
-    return this
+    return event
   },
-
-  event: function () {
-    return this._event
+  // Fire given event
+  fire: function (event, data) {
+    this.dispatch(event, data)
+    return this
   }
 })
 
@@ -3874,7 +3780,7 @@ SVG.Doc = SVG.invent({
     this.constructor(node || SVG.create('svg'))
 
     // set svg element attributes and ensure defs node
-    this.namespace().defs()
+    this.namespace()
   },
 
   // Inherit from
@@ -3882,8 +3788,17 @@ SVG.Doc = SVG.invent({
 
   // Add class methods
   extend: {
+    isRoot: function () {
+      return !this.node.parentNode || !(this.node.parentNode instanceof window.SVGElement) || this.node.parentNode.nodeName === '#document'
+    },
+    // Check if this is a root svg. If not, call docs from this element
+    doc: function () {
+      if (this.isRoot()) return this
+      return SVG.Element.prototype.doc.call(this)
+    },
     // Add namespaces
     namespace: function () {
+      if (!this.isRoot()) return this.doc().namespace()
       return this
         .attr({ xmlns: SVG.ns, version: '1.1' })
         .attr('xmlns:xlink', SVG.xlink, SVG.xmlns)
@@ -3891,14 +3806,23 @@ SVG.Doc = SVG.invent({
     },
     // Creates and returns defs element
     defs: function () {
+      if (!this.isRoot()) return this.doc().defs()
       return SVG.adopt(this.node.getElementsByTagName('defs')[0]) || this.put(new SVG.Defs())
     },
     // custom parent method
-    parent: function () {
-      return this.node.parentNode.nodeName === '#document' ? null : this.node.parentNode
+    parent: function (type) {
+      if (this.isRoot()) {
+        return this.node.parentNode.nodeName === '#document' ? null : this.node.parentNode
+      }
+
+      return SVG.Element.prototype.parent.call(this, type)
     },
-      // Removes the doc from the DOM
+    // Removes the doc from the DOM
     remove: function () {
+      if (!this.isRoot()) {
+        return SVG.Element.prototype.remove.call(this)
+      }
+
       if (this.parent()) {
         this.parent().removeChild(this.node)
       }
@@ -3911,16 +3835,14 @@ SVG.Doc = SVG.invent({
         this.node.removeChild(this.node.lastChild)
       }
       return this
-    },
-    toNested: function () {
-      var el = SVG.create('svg')
-      this.node.instance = null
-      el.appendChild(this.node)
-
-      return SVG.adopt(this.node)
+    }
+  },
+  construct: {
+    // Create nested svg document
+    nested: function () {
+      return this.put(new SVG.Doc())
     }
   }
-
 })
 
 
@@ -4720,23 +4642,6 @@ SVG.extend([SVG.Path], {
   // TODO: Maybe add `targets` to get all textPaths associated with this path
 })
 
-
-SVG.Nested = SVG.invent({
-  // Initialize node
-  create: 'svg',
-
-  // Inherit from
-  inherit: SVG.Container,
-
-  // Add parent method
-  construct: {
-    // Create nested svg document
-    nested: function () {
-      return this.put(new SVG.Nested())
-    }
-  }
-})
-
 SVG.A = SVG.invent({
   // Initialize node
   create: 'a',
@@ -5440,7 +5345,7 @@ SVG.Box = SVG.invent({
   }
 })
 
-SVG.extend([SVG.Doc, SVG.Nested, SVG.Symbol, SVG.Image, SVG.Pattern, SVG.Marker, SVG.ForeignObject, SVG.View], {
+SVG.extend([SVG.Doc, SVG.Symbol, SVG.Image, SVG.Pattern, SVG.Marker, SVG.ForeignObject, SVG.View], {
   viewbox: function (x, y, width, height) {
     // act as getter
     if (x == null) return new SVG.Box(this.attr('viewBox'))
@@ -5463,7 +5368,7 @@ SVG.parser = function () {
 }
 
 SVG.parser.nodes = {
-  svg: new SVG.Nested().size(2, 0).css({
+  svg: SVG().size(2, 0).css({
     opacity: 0,
     position: 'absolute',
     left: '-100%',
diff --git a/dist/svg.min.js b/dist/svg.min.js
index 30171f0..4e5d098 100644
--- a/dist/svg.min.js
+++ b/dist/svg.min.js
@@ -1,2 +1,2 @@
-/*! svg.js v3.0.0 MIT*/;!function(t,e){"function"==typeof define&&define.amd?define(function(){return e(t,t.document)}):"object"==typeof exports?module.exports=t.document?e(t,t.document):function(t){return e(t,t.document)}:t.SVG=e(t,t.document)}("undefined"!=typeof window?window:this,function(t,e){function n(t,n){if(t instanceof A.Element)return t;if("object"==typeof t)return A.adopt(t);if(null==t)return new A.Doc;if("string"==typeof t&&"<"!==t.charAt(0))return A.adopt(e.querySelector(t));var i=A.create("svg");return i.innerHTML=t,t=A.adopt(i.firstElementChild)}function i(t){return!(t.w||t.h||t.x||t.y)}function r(t){return(e.documentElement.contains||function(t){for(;t.parentNode;)t=t.parentNode;return t===e}).call(e.documentElement,t)}function s(t,e,n,i){return n+i.replace(A.regex.dots," .")}function o(t){for(var e=t.slice(0),n=e.length;n--;)Array.isArray(e[n])&&(e[n]=o(e[n]));return e}function a(t,e){return t instanceof e}function h(t,e){return(t.matches||t.matchesSelector||t.msMatchesSelector||t.mozMatchesSelector||t.webkitMatchesSelector||t.oMatchesSelector).call(t,e)}function u(t){return t.toLowerCase().replace(/-(.)/g,function(t,e){return e.toUpperCase()})}function l(t){return t.charAt(0).toUpperCase()+t.slice(1)}function c(t){return 4===t.length?["#",t.substring(1,2),t.substring(1,2),t.substring(2,3),t.substring(2,3),t.substring(3,4),t.substring(3,4)].join(""):t}function f(t){var e=t.toString(16);return 1===e.length?"0"+e:e}function d(t,e,n){if(null==e||null==n){var i=t.bbox();null==e?e=i.width/i.height*n:null==n&&(n=i.height/i.width*e)}return{width:e,height:n}}function p(t){return{a:t[0],b:t[1],c:t[2],d:t[3],e:t[4],f:t[5]}}function m(t){return t instanceof A.Matrix||(t=new A.Matrix(t)),t}function x(t){for(var e=0,n=t.length,i="";e<n;e++)i+=t[e][0],null!=t[e][1]&&(i+=t[e][1],null!=t[e][2]&&(i+=" ",i+=t[e][2],null!=t[e][3]&&(i+=" ",i+=t[e][3],i+=" ",i+=t[e][4],null!=t[e][5]&&(i+=" ",i+=t[e][5],i+=" 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this.node.style.cssText.split(/\s*;\s*/).filter(function(t){return!!t.length}).forEach(function(t){n=t.split(/\s*:\s*/),r[n[0]]=n[1]}),r;if(arguments.length<2){if(Array.isArray(t)){for(i=t.length;i--;)r[u(t[i])]=this.node.style[u(t[i])];return r}if("string"==typeof t)return this.node.style[u(t)];if("object"==typeof t)for(i in t)this.node.style[u(i)]=null==t[i]||A.regex.isBlank.test(t[i])?"":t[i]}return 2===arguments.length&&(this.node.style[u(t)]=null==e||A.regex.isBlank.test(e)?"":e),this}}),A.Parent=A.invent({create:function(t){this.constructor(t)},inherit:A.Element,extend:{children:function(){return A.utils.map(this.node.children,function(t){return A.adopt(t)})},add:function(t,e){return t=n(t),null==e?this.node.appendChild(t.node):t.node!==this.node.children[e]&&this.node.insertBefore(t.node,this.node.children[e]),this},put:function(t,e){return this.add(t,e),t.instance||t},has:function(t){return 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A.Parent?this.flatten(t):this.toParent(t)}),this.node.firstElementChild||this.remove(),this)}}),A.Container=A.invent({create:function(t){this.constructor(t)},inherit:A.Parent}),["click","dblclick","mousedown","mouseup","mouseover","mouseout","mousemove","touchstart","touchmove","touchleave","touchend","touchcancel"].forEach(function(t){A.Element.prototype[t]=function(e){return A.on(this,t,e),this}}),A.listeners=[],A.handlerMap=[],A.listenerId=0,A.on=function(t,e,n,i,r){e.split(A.regex.delimiter).forEach(function(e){var s=n.bind(i||t),o=t instanceof A.Element?t.node:t,a=(A.handlerMap.indexOf(o)+1||A.handlerMap.push(o))-1,h=e.split(".")[0],u=e.split(".")[1]||"*";A.listeners[a]=A.listeners[a]||{},A.listeners[a][h]=A.listeners[a][h]||{},A.listeners[a][h][u]=A.listeners[a][h][u]||{},n._svgjsListenerId||(n._svgjsListenerId=++A.listenerId),A.listeners[a][h][u][n._svgjsListenerId]=s,o.addEventListener(h,s,r||!1)})},A.off=function(t,e,n){var i=A.handlerMap.indexOf(t),r=e&&e.split(".")[0],s=e&&e.split(".")[1],o="";if(-1!==i)if(n){if("function"==typeof n&&(n=n._svgjsListenerId),!n)return;A.listeners[i][r]&&A.listeners[i][r][s||"*"]&&(t.removeEventListener(r,A.listeners[i][r][s||"*"][n],!1),delete A.listeners[i][r][s||"*"][n])}else if(s&&r){if(A.listeners[i][r]&&A.listeners[i][r][s]){for(n in A.listeners[i][r][s])A.off(t,[r,s].join("."),n);delete A.listeners[i][r][s]}}else if(s)for(e in A.listeners[i])for(o in A.listeners[i][e])s===o&&A.off(t,[e,s].join("."));else if(r){if(A.listeners[i][r]){for(o in A.listeners[i][r])A.off(t,[r,o].join("."));delete A.listeners[i][r]}}else{for(e in A.listeners[i])A.off(t,e);delete A.listeners[i],delete A.handlerMap[i]}},A.extend(A.Element,{on:function(t,e,n,i){return A.on(this,t,e,n,i),this},off:function(t,e){return A.off(this.node,t,e),this},fire:function(e,n){return e instanceof t.Event?this.node.dispatchEvent(e):this.node.dispatchEvent(e=new t.CustomEvent(e,{detail:n,cancelable:!0})),this._event=e,this},event:function(){return this._event}}),A.Defs=A.invent({create:"defs",inherit:A.Container}),A.G=A.invent({create:"g",inherit:A.Container,extend:{x:function(t){return null==t?this.transform("x"):this.transform({x:t-this.x()},!0)},y:function(t){return null==t?this.transform("y"):this.transform({y:t-this.y()},!0)},cx:function(t){return null==t?this.gbox().cx:this.x(t-this.gbox().width/2)},cy:function(t){return null==t?this.gbox().cy:this.y(t-this.gbox().height/2)},gbox:function(){var t=this.bbox(),e=this.transform();return t.x+=e.x,t.x2+=e.x,t.cx+=e.x,t.y+=e.y,t.y2+=e.y,t.cy+=e.y,t}},construct:{group:function(){return this.put(new A.G)}}}),A.extend(A.Element,{siblings:function(){return this.parent().children()},position:function(){return this.parent().index(this)},next:function(){return this.siblings()[this.position()+1]},prev:function(){return this.siblings()[this.position()-1]},forward:function(){var t=this.position()+1,e=this.parent();return e.removeElement(this).add(this,t),e instanceof A.Doc&&e.node.appendChild(e.defs().node),this},backward:function(){var t=this.position();return t>0&&this.parent().removeElement(this).add(this,t-1),this},front:function(){var t=this.parent();return t.node.appendChild(this.node),t instanceof A.Doc&&t.node.appendChild(t.defs().node),this},back:function(){return this.position()>0&&this.parent().removeElement(this).add(this,0),this},before:function(t){t.remove();var e=this.position();return this.parent().add(t,e),this},after:function(t){t.remove();var e=this.position();return this.parent().add(t,e+1),this}}),A.Mask=A.invent({create:"mask",inherit:A.Container,extend:{remove:function(){return this.targets().forEach(function(t){t.unmask()}),A.Element.prototype.remove.call(this)},targets:function(){return A.select('svg [mask*="'+this.id()+'"]')}},construct:{mask:function(){return this.defs().put(new A.Mask)}}}),A.extend(A.Element,{maskWith:function(t){var e=t instanceof A.Mask?t:this.parent().mask().add(t);return this.attr("mask",'url("#'+e.id()+'")')},unmask:function(){return this.attr("mask",null)},masker:function(){return this.reference("mask")}}),A.ClipPath=A.invent({create:"clipPath",inherit:A.Container,extend:{remove:function(){return this.targets().forEach(function(t){t.unclip()}),A.Element.prototype.remove.call(this)},targets:function(){return A.select('svg [clip-path*="'+this.id()+'"]')}},construct:{clip:function(){return this.defs().put(new A.ClipPath)}}}),A.extend(A.Element,{clipWith:function(t){var e=t instanceof A.ClipPath?t:this.parent().clip().add(t);return this.attr("clip-path",'url("#'+e.id()+'")')},unclip:function(){return this.attr("clip-path",null)},clipper:function(){return this.reference("clip-path")}}),A.Gradient=A.invent({create:function(t){this.constructor("object"==typeof t?t:A.create(t+"Gradient"))},inherit:A.Container,extend:{stop:function(t,e,n){return this.put(new A.Stop).update(t,e,n)},update:function(t){return this.clear(),"function"==typeof t&&t.call(this,this),this},url:function(){return"url(#"+this.id()+")"},toString:function(){return this.url()},attr:function(t,e,n){return"transform"===t&&(t="gradientTransform"),A.Container.prototype.attr.call(this,t,e,n)}},construct:{gradient:function(t,e){return this.defs().gradient(t,e)}}}),A.extend([A.Gradient,A.FX],{from:function(t,e){return"radialGradient"===(this._target||this).type?this.attr({fx:new A.Number(t),fy:new A.Number(e)}):this.attr({x1:new A.Number(t),y1:new A.Number(e)})},to:function(t,e){return"radialGradient"===(this._target||this).type?this.attr({cx:new A.Number(t),cy:new A.Number(e)}):this.attr({x2:new A.Number(t),y2:new A.Number(e)})}}),A.extend(A.Defs,{gradient:function(t,e){return this.put(new A.Gradient(t)).update(e)}}),A.Stop=A.invent({create:"stop",inherit:A.Element,extend:{update:function(t){return("number"==typeof t||t instanceof A.Number)&&(t={offset:arguments[0],color:arguments[1],opacity:arguments[2]}),null!=t.opacity&&this.attr("stop-opacity",t.opacity),null!=t.color&&this.attr("stop-color",t.color),null!=t.offset&&this.attr("offset",new A.Number(t.offset)),this}}}),A.Pattern=A.invent({create:"pattern",inherit:A.Container,extend:{url:function(){return"url(#"+this.id()+")"},update:function(t){return this.clear(),"function"==typeof t&&t.call(this,this),this},toString:function(){return this.url()},attr:function(t,e,n){return"transform"===t&&(t="patternTransform"),A.Container.prototype.attr.call(this,t,e,n)}},construct:{pattern:function(t,e,n){return this.defs().pattern(t,e,n)}}}),A.extend(A.Defs,{pattern:function(t,e,n){return this.put(new A.Pattern).update(n).attr({x:0,y:0,width:t,height:e,patternUnits:"userSpaceOnUse"})}}),A.Doc=A.invent({create:function(t){this.constructor(t||A.create("svg")),this.namespace().defs()},inherit:A.Container,extend:{namespace:function(){return this.attr({xmlns:A.ns,version:"1.1"}).attr("xmlns:xlink",A.xlink,A.xmlns).attr("xmlns:svgjs",A.svgjs,A.xmlns)},defs:function(){return A.adopt(this.node.getElementsByTagName("defs")[0])||this.put(new A.Defs)},parent:function(){return"#document"===this.node.parentNode.nodeName?null:this.node.parentNode},remove:function(){return this.parent()&&this.parent().removeChild(this.node),this},clear:function(){for(;this.node.hasChildNodes();)this.node.removeChild(this.node.lastChild);return this},toNested:function(){var t=A.create("svg");return this.node.instance=null,t.appendChild(this.node),A.adopt(this.node)}}}),A.Shape=A.invent({create:function(t){this.constructor(t)},inherit:A.Element}),A.Bare=A.invent({create:function(t,e){if(this.constructor(A.create(t)),e)for(var n in e.prototype)"function"==typeof e.prototype[n]&&(this[n]=e.prototype[n])},inherit:A.Element,extend:{words:function(t){for(;this.node.hasChildNodes();)this.node.removeChild(this.node.lastChild);return this.node.appendChild(e.createTextNode(t)),this}}}),A.extend(A.Parent,{element:function(t,e){return this.put(new A.Bare(t,e))}}),A.Symbol=A.invent({create:"symbol",inherit:A.Container,construct:{symbol:function(){return this.put(new A.Symbol)}}}),A.Use=A.invent({create:"use",inherit:A.Shape,extend:{element:function(t,e){return this.attr("href",(e||"")+"#"+t,A.xlink)}},construct:{use:function(t,e){return this.put(new A.Use).element(t,e)}}}),A.Rect=A.invent({create:"rect",inherit:A.Shape,construct:{rect:function(t,e){return this.put(new A.Rect).size(t,e)}}}),A.Circle=A.invent({create:"circle",inherit:A.Shape,construct:{circle:function(t){return this.put(new A.Circle).rx(new A.Number(t).divide(2)).move(0,0)}}}),A.extend([A.Circle,A.FX],{rx:function(t){return this.attr("r",t)},ry:function(t){return this.rx(t)}}),A.Ellipse=A.invent({create:"ellipse",inherit:A.Shape,construct:{ellipse:function(t,e){return this.put(new A.Ellipse).size(t,e).move(0,0)}}}),A.extend([A.Ellipse,A.Rect,A.FX],{rx:function(t){return this.attr("rx",t)},ry:function(t){return this.attr("ry",t)}}),A.extend([A.Circle,A.Ellipse],{x:function(t){return null==t?this.cx()-this.rx():this.cx(t+this.rx())},y:function(t){return null==t?this.cy()-this.ry():this.cy(t+this.ry())},cx:function(t){return null==t?this.attr("cx"):this.attr("cx",t)},cy:function(t){return null==t?this.attr("cy"):this.attr("cy",t)},width:function(t){return null==t?2*this.rx():this.rx(new A.Number(t).divide(2))},height:function(t){return null==t?2*this.ry():this.ry(new A.Number(t).divide(2))},size:function(t,e){var n=d(this,t,e);return this.rx(new A.Number(n.width).divide(2)).ry(new A.Number(n.height).divide(2))}}),A.Line=A.invent({create:"line",inherit:A.Shape,extend:{array:function(){return new A.PointArray([[this.attr("x1"),this.attr("y1")],[this.attr("x2"),this.attr("y2")]])},plot:function(t,e,n,i){return null==t?this.array():(t=void 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this.attr("points",this.array().move(t,e))},size:function(t,e){var n=d(this,t,e);return this.attr("points",this.array().size(n.width,n.height))}}),A.extend([A.Line,A.Polyline,A.Polygon],{MorphArray:A.PointArray,x:function(t){return null==t?this.bbox().x:this.move(t,this.bbox().y)},y:function(t){return null==t?this.bbox().y:this.move(this.bbox().x,t)},width:function(t){var e=this.bbox();return null==t?e.width:this.size(t,e.height)},height:function(t){var e=this.bbox();return null==t?e.height:this.size(e.width,t)}}),A.Path=A.invent({create:"path",inherit:A.Shape,extend:{MorphArray:A.PathArray,array:function(){return this._array||(this._array=new A.PathArray(this.attr("d")))},plot:function(t){return null==t?this.array():this.clear().attr("d","string"==typeof t?t:this._array=new A.PathArray(t))},clear:function(){return delete this._array,this},move:function(t,e){return this.attr("d",this.array().move(t,e))},x:function(t){return 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null==t?this.node.textContent+(this.dom.newLined?"\n":""):("function"==typeof t?t.call(this,this):this.plain(t),this)},dx:function(t){return this.attr("dx",t)},dy:function(t){return this.attr("dy",t)},newLine:function(){var t=this.parent(A.Text);return this.dom.newLined=!0,this.dy(t.dom.leading*t.attr("font-size")).attr("x",t.x())}}}),A.extend([A.Text,A.Tspan],{plain:function(t){return!1===this._build&&this.clear(),this.node.appendChild(e.createTextNode(t)),this},tspan:function(t){var e=new A.Tspan;return this._build||this.clear(),this.node.appendChild(e.node),e.text(t)},length:function(){return this.node.getComputedTextLength()}}),A.TextPath=A.invent({create:"textPath",inherit:A.Text,parent:A.Parent,extend:{MorphArray:A.PathArray,array:function(){var t=this.track();return t?t.array():null},plot:function(t){var e=this.track(),n=null;return e&&(n=e.plot(t)),null==t?n:this},track:function(){return this.reference("href")}},construct:{textPath:function(t,e){return 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b.PathArray(t))},clear:function(){return delete this._array,this},move:function(t,e){return this.attr("d",this.array().move(t,e))},x:function(t){return null==t?this.bbox().x:this.move(t,this.bbox().y)},y:function(t){return null==t?this.bbox().y:this.move(this.bbox().x,t)},size:function(t,e){var n=d(this,t,e);return this.attr("d",this.array().size(n.width,n.height))},width:function(t){return null==t?this.bbox().width:this.size(t,this.bbox().height)},height:function(t){return null==t?this.bbox().height:this.size(this.bbox().width,t)}},construct:{path:function(t){return this.put(new b.Path).plot(t||new b.PathArray)}}}),b.Image=b.invent({create:"image",inherit:b.Shape,extend:{load:function(e,n){if(!e)return this;var i=new t.Image;return b.on(i,"load",function(t){var r=this.parent(b.Pattern);0===this.width()&&0===this.height()&&this.size(i.width,i.height),r instanceof b.Pattern&&0===r.width()&&0===r.height()&&r.size(this.width(),this.height()),"function"==typeof n&&n.call(this,{width:i.width,height:i.height,ratio:i.width/i.height,url:e})},this),b.on(i,"load error",function(){b.off(i)}),this.attr("href",i.src=e,b.xlink)}},construct:{image:function(t,e){return this.put(new b.Image).size(0,0).load(t,e)}}}),b.Text=b.invent({create:function(t){this.constructor(t||b.create("text")),this.dom.leading=new b.Number(1.3),this._rebuild=!0,this._build=!1,this.attr("font-family",b.defaults.attrs["font-family"])},inherit:b.Parent,extend:{x:function(t){return null==t?this.attr("x"):this.attr("x",t)},y:function(t){var e=this.attr("y"),n="number"==typeof e?e-this.bbox().y:0;return null==t?"number"==typeof e?e-n:e:this.attr("y","number"==typeof t?t+n:t)},cx:function(t){return null==t?this.bbox().cx:this.x(t-this.bbox().width/2)},cy:function(t){return null==t?this.bbox().cy:this.y(t-this.bbox().height/2)},text:function(t){if(void 0===t){var e=this.node.childNodes,n=0;t="";for(var i=0,r=e.length;i<r;++i)"textPath"!==e[i].nodeName?(i!==n&&3!==e[i].nodeType&&!0===b.adopt(e[i]).dom.newLined&&(t+="\n"),t+=e[i].textContent):0===i&&(n=1);return t}if(this.clear().build(!0),"function"==typeof t)t.call(this,this);else{t=t.split("\n");for(var s=0,o=t.length;s<o;s++)this.tspan(t[s]).newLine()}return this.build(!1).rebuild()},size:function(t){return this.attr("font-size",t).rebuild()},leading:function(t){return null==t?this.dom.leading:(this.dom.leading=new b.Number(t),this.rebuild())},rebuild:function(t){if("boolean"==typeof t&&(this._rebuild=t),this._rebuild){var e=this,n=0,i=this.dom.leading*new b.Number(this.attr("font-size"));this.each(function(){this.dom.newLined&&(this.attr("x",e.attr("x")),"\n"===this.text()?n+=i:(this.attr("dy",i+n),n=0))}),this.fire("rebuild")}return this},build:function(t){return this._build=!!t,this},setData:function(t){return this.dom=t,this.dom.leading=new b.Number(t.leading||1.3),this}},construct:{text:function(t){return this.put(new b.Text).text(t)},plain:function(t){return this.put(new b.Text).plain(t)}}}),b.Tspan=b.invent({create:"tspan",inherit:b.Parent,extend:{text:function(t){return null==t?this.node.textContent+(this.dom.newLined?"\n":""):("function"==typeof t?t.call(this,this):this.plain(t),this)},dx:function(t){return this.attr("dx",t)},dy:function(t){return this.attr("dy",t)},newLine:function(){var t=this.parent(b.Text);return this.dom.newLined=!0,this.dy(t.dom.leading*t.attr("font-size")).attr("x",t.x())}}}),b.extend([b.Text,b.Tspan],{plain:function(t){return!1===this._build&&this.clear(),this.node.appendChild(e.createTextNode(t)),this},tspan:function(t){var e=new b.Tspan;return this._build||this.clear(),this.node.appendChild(e.node),e.text(t)},length:function(){return this.node.getComputedTextLength()}}),b.TextPath=b.invent({create:"textPath",inherit:b.Text,parent:b.Parent,extend:{MorphArray:b.PathArray,array:function(){var t=this.track();return t?t.array():null},plot:function(t){var e=this.track(),n=null;return e&&(n=e.plot(t)),null==t?n:this},track:function(){return this.reference("href")}},construct:{textPath:function(t,e){return this.defs().path(e).text(t).addTo(this)}}}),b.extend([b.Text],{path:function(t){var e=new b.TextPath;return t instanceof b.Path||(t=this.doc().defs().path(t)),e.attr("href","#"+t,b.xlink),this.put(e)},textPath:function(){return this.select("textPath")}}),b.extend([b.Path],{text:function(t){if(t instanceof b.Text){var e=t.text();return t.clear().path(this).text(e)}return this.parent().put(new b.Text).path(this).text(t)}}),b.A=b.invent({create:"a",inherit:b.Container,extend:{to:function(t){return this.attr("href",t,b.xlink)},target:function(t){return this.attr("target",t)}},construct:{link:function(t){return this.put(new b.A).to(t)}}}),b.extend(b.Element,{linkTo:function(t){var e=new b.A;return"function"==typeof t?t.call(e,e):e.to(t),this.parent().put(e).put(this)}}),b.Marker=b.invent({create:"marker",inherit:b.Container,extend:{width:function(t){return this.attr("markerWidth",t)},height:function(t){return this.attr("markerHeight",t)},ref:function(t,e){return this.attr("refX",t).attr("refY",e)},update:function(t){return this.clear(),"function"==typeof t&&t.call(this,this),this},toString:function(){return"url(#"+this.id()+")"}},construct:{marker:function(t,e,n){return this.defs().marker(t,e,n)}}}),b.extend(b.Defs,{marker:function(t,e,n){return this.put(new b.Marker).size(t,e).ref(t/2,e/2).viewbox(0,0,t,e).attr("orient","auto").update(n)}}),b.extend([b.Line,b.Polyline,b.Polygon,b.Path],{marker:function(t,e,n,i){var r=["marker"];return"all"!==t&&r.push(t),r=r.join("-"),t=arguments[1]instanceof b.Marker?arguments[1]:this.doc().marker(e,n,i),this.attr(r,t)}});var M={stroke:["color","width","opacity","linecap","linejoin","miterlimit","dasharray","dashoffset"],fill:["color","opacity","rule"],prefix:function(t,e){return"color"===e?t:t+"-"+e}};["fill","stroke"].forEach(function(t){var e,n={};n[t]=function(n){if(void 0===n)return this;if("string"==typeof n||b.Color.isRgb(n)||n&&"function"==typeof n.fill)this.attr(t,n);else for(e=M[t].length-1;e>=0;e--)null!=n[M[t][e]]&&this.attr(M.prefix(t,M[t][e]),n[M[t][e]]);return this},b.extend([b.Element,b.FX],n)}),b.extend([b.Element,b.FX],{rotate:function(t,e,n){return this.transform({rotate:t,ox:e,oy:n},!0)},skew:function(t,e,n,i){return 1===arguments.length||3===arguments.length?this.transform({skew:t,ox:e,oy:n},!0):this.transform({skew:[t,e],ox:n,oy:i},!0)},scale:function(t,e,n,i){return 1===arguments.length||3===arguments.length?this.transform({scale:t,origin:[e,n]},!0):this.transform({scaleX:t,scaleY:e,origin:[n,i]},!0)},translate:function(t,e){return this.transform({translate:[t,e]},!0)},flip:function(t,e){var n="both"===t&&isFinite(e)?[e,e]:"x"===t?[e,0]:"y"===t?[0,e]:void 0;this.transform({flip:t,origin:n})},opacity:function(t){return this.attr("opacity",t)},dx:function(t){return this.x(new b.Number(t).plus(this instanceof b.FX?0:this.x()),!0)},dy:function(t){return this.y(new b.Number(t).plus(this instanceof b.FX?0:this.y()),!0)},dmove:function(t,e){return this.dx(t).dy(e)}}),b.extend([b.Rect,b.Ellipse,b.Circle,b.Gradient,b.FX],{radius:function(t,e){var n=(this._target||this).type;return"radialGradient"===n||"radialGradient"===n?this.attr("r",new b.Number(t)):this.rx(t).ry(null==e?t:e)}}),b.extend(b.Path,{length:function(){return this.node.getTotalLength()},pointAt:function(t){return new b.Point(this.node.getPointAtLength(t))}}),b.extend([b.Parent,b.Text,b.Tspan,b.FX],{font:function(t,e){if("object"==typeof t)for(e in t)this.font(e,t[e]);return"leading"===t?this.leading(e):"anchor"===t?this.attr("text-anchor",e):"size"===t||"family"===t||"weight"===t||"stretch"===t||"variant"===t||"style"===t?this.attr("font-"+t,e):this.attr(t,e)}}),b.extend(b.Element,{data:function(t,e,n){if("object"==typeof t)for(e in t)this.data(e,t[e]);else if(arguments.length<2)try{return JSON.parse(this.attr("data-"+t))}catch(e){return this.attr("data-"+t)}else this.attr("data-"+t,null===e?null:!0===n||"string"==typeof e||"number"==typeof e?e:JSON.stringify(e));return this}}),b.extend(b.Element,{remember:function(t,e){if("object"==typeof arguments[0])for(var n in t)this.remember(n,t[n]);else{if(1===arguments.length)return this.memory()[t];this.memory()[t]=e}return this},forget:function(){if(0===arguments.length)this._memory={};else for(var t=arguments.length-1;t>=0;t--)delete this.memory()[arguments[t]];return this},memory:function(){return this._memory||(this._memory={})}}),b.get=function(t){var n=e.getElementById(y(t)||t);return b.adopt(n)},b.select=function(t,n){return b.utils.map((n||e).querySelectorAll(t),function(t){return b.adopt(t)})},b.$$=function(t,n){return b.utils.map((n||e).querySelectorAll(t),function(t){return b.adopt(t)})},b.$=function(t,n){return b.adopt((n||e).querySelector(t))},b.extend(b.Parent,{select:function(t){return b.select(t,this.node)}});var S="abcdef".split("");return b.Box=b.invent({create:function(t){var e=[0,0,0,0];t="string"==typeof t?t.split(b.regex.delimiter).map(parseFloat):Array.isArray(t)?t:"object"==typeof t?[null!=t.left?t.left:t.x,null!=t.top?t.top:t.y,t.width,t.height]:4===arguments.length?[].slice.call(arguments):e,this.x=t[0],this.y=t[1],this.width=t[2],this.height=t[3],g(this)},extend:{merge:function(t){var e=Math.min(this.x,t.x),n=Math.min(this.y,t.y);return new b.Box(e,n,Math.max(this.x+this.width,t.x+t.width)-e,Math.max(this.y+this.height,t.y+t.height)-n)},transform:function(t){var e=1/0,n=-1/0,i=1/0,r=-1/0;return[new b.Point(this.x,this.y),new b.Point(this.x2,this.y),new b.Point(this.x,this.y2),new b.Point(this.x2,this.y2)].forEach(function(s){s=s.transform(t),e=Math.min(e,s.x),n=Math.max(n,s.x),i=Math.min(i,s.y),r=Math.max(r,s.y)}),new b.Box(e,i,n-e,r-i)},addOffset:function(){return this.x+=t.pageXOffset,this.y+=t.pageYOffset,this},toString:function(){return this.x+" "+this.y+" "+this.width+" "+this.height},morph:function(t,e,n,i){return this.destination=new b.Box(t,e,n,i),this},at:function(t){return this.destination?new b.Box(this.x+(this.destination.x-this.x)*t,this.y+(this.destination.y-this.y)*t,this.width+(this.destination.width-this.width)*t,this.height+(this.destination.height-this.height)*t):this}},parent:b.Element,construct:{bbox:function(){var t;try{if(t=this.node.getBBox(),i(t)&&!r(this.node))throw new Exception("Element not in the dom")}catch(n){try{var e=this.clone(b.parser().svg).show();t=e.node.getBBox(),e.remove()}catch(t){console.warn("Getting a bounding box of this element is not possible")}}return new b.Box(t)},rbox:function(t){try{var e=new b.Box(this.node.getBoundingClientRect());return t?e.transform(t.screenCTM().inverse()):e.addOffset()}catch(t){return new b.Box}}}}),b.extend([b.Doc,b.Symbol,b.Image,b.Pattern,b.Marker,b.ForeignObject,b.View],{viewbox:function(t,e,n,i){return null==t?new b.Box(this.attr("viewBox")):this.attr("viewBox",new b.Box(t,e,n,i))}}),b.parser=function(){var t;return b.parser.nodes.svg.node.parentNode||(t=e.body||e.documentElement,b.parser.nodes.svg.addTo(t)),b.parser.nodes},b.parser.nodes={svg:b().size(2,0).css({opacity:0,position:"absolute",left:"-100%",top:"-100%",overflow:"hidden"})},b.parser.nodes.path=b.parser.nodes.svg.path().node,b});
\ No newline at end of file
diff --git a/gulpfile.js b/gulpfile.js
index ac63729..4ad5cb9 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -69,7 +69,6 @@ var parts = [
   'src/image.js',

   'src/text.js',

   'src/textpath.js',

-  'src/nested.js',

   'src/hyperlink.js',

   'src/marker.js',

   'src/sugar.js',

diff --git a/spec/SpecRunner.html b/spec/SpecRunner.html
index 1ecef12..62e9121 100644
--- a/spec/SpecRunner.html
+++ b/spec/SpecRunner.html
@@ -71,15 +71,14 @@
   <script src="spec/gradient.js"></script>
   <script src="spec/group.js"></script>-->
   <script src="spec/helper.js"></script>
-  <!-- <script src="spec/hyperlink.js"></script>
+  <!--<script src="spec/hyperlink.js"></script>
   <script src="spec/image.js"></script>
   <script src="spec/line.js"></script>
   <script src="spec/marker.js"></script>
   <script src="spec/mask.js"></script> -->
   <script src="spec/matrix.js"></script>
-  <!-- <script src="spec/memory.js"></script>
+  <!-- <script src="spec/number.js"></script>
   <script src="spec/nested.js"></script>
-  <script src="spec/number.js"></script>
   <script src="spec/path.js"></script>
   <script src="spec/pattern.js"></script>
   <script src="spec/point.js"></script>
@@ -96,8 +95,8 @@
   <script src="spec/transformations.js"></script>
   <script src="spec/tspan.js"></script>
   <script src="spec/use.js"></script>
-  <script src="spec/utils.js"></script>
-  <script src="spec/viewbox.js"></script> -->
+  <script src="spec/utils.js"></script> -->
+  <!-- <script src="spec/viewbox.js"></script> --> -->
 
 </body>
 </html>
diff --git a/spec/spec/doc.js b/spec/spec/doc.js
index 1e1c54c..5accd5b 100644
--- a/spec/spec/doc.js
+++ b/spec/spec/doc.js
@@ -16,11 +16,11 @@ describe('Doc', function() {
     expect(draw instanceof SVG.Doc).toBe(true)
   })
 
-  it('returns itself as Doc', function() {
+  it('returns itself as Doc when root', function() {
     expect(draw.doc()).toBe(draw)
   })
 
-  it('has a defs element', function() {
+  it('has a defs element when root', function() {
     expect(draw.defs() instanceof SVG.Defs).toBe(true)
   })
 
@@ -33,6 +33,23 @@ describe('Doc', function() {
     })
   })
 
+  describe('isRoot()', function() {
+    it('returns true when the doc is not attached to dom', function() {
+      expect(SVG().isRoot()).toBe(true)
+    })
+    it('returns true when its outer element is not an svg element', function () {
+      expect(SVG().addTo(document.createElement('div')).isRoot()).toBe(true)
+    })
+    it('returns true when its the root element of the dom', function () {
+      if(parserInDoc) {
+        expect(draw.isRoot()).toBe(true)
+      }
+    })
+    it('returns false when parent is svg element', function () {
+      expect(SVG().addTo(SVG()).isRoot()).toBe(false)
+    })
+  })
+
   describe('remove()', function() {
     it('removes the doc from the dom only if doc is not root element', function() {
       var cnt = window.document.querySelectorAll('svg').length
diff --git a/spec/spec/element.js b/spec/spec/element.js
index 3f62e5a..ca8deff 100644
--- a/spec/spec/element.js
+++ b/spec/spec/element.js
@@ -485,11 +485,12 @@ describe('Element', function() {
 
     it('ungroups everything to the doc root when called on SVG.Doc / does not ungroup defs/parser', function() {
       draw.flatten()
+      
       expect(rect1.parent()).toBe(draw)
       expect(rect2.parent()).toBe(draw)
 
       expect(g1.node.parentNode).toBeFalsy()
-      expect(g1.node.parentNode).toBeFalsy()
+      expect(g2.node.parentNode).toBeFalsy()
       expect(nested.node.parentNode).toBeFalsy()
 
       expect(rect1.transform()).toEqual(jasmine.objectContaining({
diff --git a/spec/spec/event.js b/spec/spec/event.js
index 0228fae..5f12172 100644
--- a/spec/spec/event.js
+++ b/spec/spec/event.js
@@ -10,7 +10,8 @@ describe('Event', function() {
 
   beforeEach(function() {
     rect = draw.rect(100, 100)
-    spyOn(SVG,'on').and.callThrough()
+    spyOn(SVG, 'on').and.callThrough()
+    spyOn(rect, 'dispatch').and.callThrough()
   })
 
   afterEach(function() {
@@ -25,8 +26,8 @@ describe('Event', function() {
     , 'mouseover'
     , 'mouseout'
     , 'mousemove'
-    // , 'mouseenter' -> not supported by IE
-    // , 'mouseleave' -> not supported by IE
+    , 'mouseenter'
+    , 'mouseleave'
     ].forEach(function(event) {
       describe(event+'()', function() {
         it('calls `on()` with '+event+' as event', function() {
@@ -71,39 +72,32 @@ describe('Event', function() {
       SVG.off(el, 'event', action)
     })
     it('attaches multiple handlers on different element', function() {
-      var listenerCnt = SVG.listeners.length
-
-      var rect2 = draw.rect(100,100);
-      var rect3 = draw.rect(100,100);
+      var rect2 = draw.rect(100, 100)
+      var rect3 = draw.rect(100, 100)
 
       rect.on('event', action)
       rect2.on('event', action)
       rect3.on('event', function(){ butter = 'melting' })
       rect3.on('event', action)
 
-      expect(Object.keys(SVG.listeners[SVG.handlerMap.indexOf(rect.node)]['event']['*']).length).toBe(1)  // 1 listener on rect
-      expect(Object.keys(SVG.listeners[SVG.handlerMap.indexOf(rect2.node)]['event']['*']).length).toBe(1) // 1 listener on rect2
-      expect(Object.keys(SVG.listeners[SVG.handlerMap.indexOf(rect3.node)]['event']['*']).length).toBe(2) // 2 listener on rect3
-
-      expect(SVG.listeners.length).toBe(listenerCnt + 3)                                                  // added listeners on 3 different elements
+      expect(Object.keys(rect.events['event']['*']).length).toBe(1)  // 1 listener on rect
+      expect(Object.keys(rect2.events['event']['*']).length).toBe(1) // 1 listener on rect2
+      expect(Object.keys(rect3.events['event']['*']).length).toBe(2) // 2 listener on rect3
     })
     if('attaches a handler to a namespaced event', function(){
-      var listenerCnt = SVG.listeners.length
-
-      var rect2 = draw.rect(100,100);
-      var rect3 = draw.rect(100,100);
+      var rect2 = draw.rect(100, 100)
+      var rect3 = draw.rect(100, 100)
 
       rect.on('event.namespace1', action)
       rect2.on('event.namespace2', action)
       rect3.on('event.namespace3', function(){ butter = 'melting' })
       rect3.on('event', action)
 
-      expect(Object.keys(SVG.listeners[SVG.handlerMap.indexOf(rect.node)]['event']['*'])).toBeUndefined()          // no global listener on rect
-      expect(Object.keys(SVG.listeners[SVG.handlerMap.indexOf(rect.node)]['event']['namespace1']).length).toBe( 1) // 1 namespaced listener on rect
-      expect(Object.keys(SVG.listeners[SVG.handlerMap.indexOf(rect2.node)]['event']['namespace2']).length).toBe(1) // 1 namespaced listener on rect
-      expect(Object.keys(SVG.listeners[SVG.handlerMap.indexOf(rect3.node)]['event']['*']).length).toBe(1)          // 1 gobal listener on rect3
-      expect(Object.keys(SVG.listeners[SVG.handlerMap.indexOf(rect3.node)]['event']['namespace3']).length).toBe(1) // 1 namespaced listener on rect3
-      expect(SVG.listeners.length).toBe(listenerCnt + 3)                                                           // added listeners on 3 different elements
+      expect(Object.keys(rect.events['event']['*'])).toBeUndefined()          // no global listener on rect
+      expect(Object.keys(rect.events['event']['namespace1']).length).toBe( 1) // 1 namespaced listener on rect
+      expect(Object.keys(rect2.events['namespace2']).length).toBe(1) // 1 namespaced listener on rect2
+      expect(Object.keys(rect3.events['event']['*']).length).toBe(1)          // 1 gobal listener on rect3
+      expect(Object.keys(rect3.events['event']['namespace3']).length).toBe(1) // 1 namespaced listener on rect3
     })
     it('applies the element as context', function() {
       rect.on('event', action).fire('event')
@@ -115,7 +109,7 @@ describe('Event', function() {
     })
     it('stores the listener for future reference', function() {
       rect.on('event', action)
-      expect(SVG.listeners[SVG.handlerMap.indexOf(rect.node)]['event']['*'][action._svgjsListenerId]).not.toBeUndefined()
+      expect(rect.events['event']['*'][action._svgjsListenerId]).not.toBeUndefined()
     })
     it('returns the called element', function() {
       expect(rect.on('event', action)).toBe(rect)
@@ -130,8 +124,8 @@ describe('Event', function() {
     })
 
     it('detaches a specific event listener, all other still working', function() {
-      rect2 = draw.rect(100,100);
-      rect3 = draw.rect(100,100);
+      rect2 = draw.rect(100,100)
+      rect3 = draw.rect(100,100)
 
       rect.on('event', action)
       rect2.on('event', action)
@@ -139,7 +133,7 @@ describe('Event', function() {
 
       rect.off('event', action)
 
-      expect(Object.keys(SVG.listeners[SVG.handlerMap.indexOf(rect.node)]['event']['*']).length).toBe(0)
+      expect(Object.keys(rect.events['event']['*']).length).toBe(0)
 
       rect.fire('event')
       expect(toast).toBeNull()
@@ -150,11 +144,11 @@ describe('Event', function() {
       rect3.fire('event')
       expect(butter).toBe('melting')
 
-      expect(SVG.listeners[SVG.handlerMap.indexOf(rect.node)]['event']['*'][action]).toBeUndefined()
+      expect(rect.events['event']['*'][action]).toBeUndefined()
     })
     it('detaches a specific namespaced event listener, all other still working', function() {
-      rect2 = draw.rect(100,100);
-      rect3 = draw.rect(100,100);
+      rect2 = draw.rect(100,100)
+      rect3 = draw.rect(100,100)
 
       rect.on('event.namespace', action)
       rect2.on('event.namespace', action)
@@ -162,7 +156,8 @@ describe('Event', function() {
 
       rect.off('event.namespace', action)
 
-      expect(Object.keys(SVG.listeners[SVG.handlerMap.indexOf(rect.node)]['event']['namespace']).length).toBe(0)
+      expect(Object.keys(rect.events['event']['namespace']).length).toBe(0)
+      expect(Object.keys(rect2.events['event']['namespace']).length).toBe(1)
 
       rect.fire('event')
       expect(toast).toBeNull()
@@ -173,7 +168,7 @@ describe('Event', function() {
       rect3.fire('event')
       expect(butter).toBe('melting')
 
-      expect(SVG.listeners[SVG.handlerMap.indexOf(rect.node)]['event']['namespace'][action]).toBeUndefined()
+      expect(rect.events['event']['namespace'][action]).toBeUndefined()
     })
     it('detaches all listeners for a specific namespace', function() {
       rect.on('event', action)
@@ -192,7 +187,7 @@ describe('Event', function() {
       rect.fire('event')
       expect(toast).toBeNull()
       expect(butter).toBeNull()
-      expect(SVG.listeners[SVG.handlerMap.indexOf(rect.node)]['event']).toBeUndefined()
+      expect(rect.events['event']).toBeUndefined()
     })
     it('detaches all listeners without an argument', function() {
       rect.on('event', action)
@@ -202,7 +197,20 @@ describe('Event', function() {
       rect.fire('click')
       expect(toast).toBeNull()
       expect(butter).toBeNull()
-      expect(SVG.listeners[SVG.handlerMap.indexOf(rect.node)]).toBeUndefined()
+      expect(Object.keys(rect.events).length).toBe(0)
+    })
+    it('detaches multiple listeners at once', function() {
+      rect2 = draw.rect(100,100)
+      rect3 = draw.rect(100,100)
+
+      rect.on('event.namespace bla foo.bar otherfoo.bar keepthis', action)
+      rect.off('event.namespace bla .bar')
+      
+      expect(Object.keys(rect.events['event']).length).toBe(0)
+      expect(rect.events['bla']).toBeUndefined()
+      expect(Object.keys(rect.events['foo']).length).toBe(0)
+      expect(Object.keys(rect.events['otherfoo']).length).toBe(0)
+      expect(Object.keys(rect.events['keepthis']['*']).length).toBe(1)
     })
     it('returns the called element', function() {
       expect(rect.off('event', action)).toBe(rect)
@@ -218,12 +226,23 @@ describe('Event', function() {
         expect('Should not error out').toBe(true)
       }
 
-      expect(SVG.handlerMap[SVG.handlerMap.indexOf(rect.node)]).toBe(undefined)
+      expect(Object.keys(rect.events).length).toBe(0)
     })
   })
 
   describe('fire()', function() {
+    it('calls dispatch with its parameters', function() {
+      var data = {}
+      rect.dispatch('event', data)
+      expect(rect.dispatch).toHaveBeenCalledWith('event', data)
+    })
+
+    it('returns the called element', function() {
+      expect(rect.fire('event')).toBe(rect)
+    })
+  })
 
+  describe('dispatch()', function() {
     beforeEach(function() {
       rect.on('event', action)
     })
@@ -234,9 +253,7 @@ describe('Event', function() {
       expect(toast).toBe('ready')
       expect(fruitsInDetail).toBe(null)
     })
-    it('returns the called element', function() {
-      expect(rect.fire('event')).toBe(rect)
-    })
+
     it('fires event with additional data', function() {
       expect(fruitsInDetail).toBeNull()
       rect.fire('event', {apple:1})
@@ -248,27 +265,11 @@ describe('Event', function() {
       rect.fire(new window.CustomEvent('event'))
       expect(toast).toBe('ready')
     })
-    it('makes the event cancelable', function() {
+    it('returns the dispatched event and makes it cancelable', function() {
       rect.on('event', function(e) {
         e.preventDefault()
       })
-      rect.fire('event')
-      expect(rect._event.defaultPrevented).toBe(true)
-    })
-  })
-
-  describe('event()', function() {
-    it('returns null when no event was fired', function() {
-      expect(rect.event()).toBe(null)
-    })
-    it('returns the last fired event', function() {
-      var event = new window.CustomEvent('foo')
-      rect.fire(event)
-      expect(rect.event()).toBe(event)
-
-      event = new window.CustomEvent('bar')
-      rect.fire(event)
-      expect(rect.event()).toBe(event)
+      expect(rect.dispatch('event').defaultPrevented).toBe(true)
     })
   })
 })
diff --git a/spec/spec/nested.js b/spec/spec/nested.js
deleted file mode 100644
index 3113880..0000000
--- a/spec/spec/nested.js
+++ /dev/null
@@ -1,13 +0,0 @@
-describe('Nested', function() {
-
-  afterEach(function() {
-    draw.clear()
-  })
-
-  describe('()', function() {
-    it('creates a nested svg of type SVG.Nested', function() {
-      expect(draw.nested() instanceof SVG.Nested).toBeTruthy()
-    })
-  })
-
-})
diff --git a/spec/spec/svg.js b/spec/spec/svg.js
index 2485a32..ea51703 100644
--- a/spec/spec/svg.js
+++ b/spec/spec/svg.js
@@ -52,10 +52,10 @@ describe('SVG', function() {
       expect(SVG(rect).node).toBe(rect)
     })
 
-    it('creates an instanceof SVG.Nested when importing a whole svg', function() {
+    it('creates an instanceof SVG.Doc when importing a whole svg', function() {
       var doc = SVG('<svg width="200"><rect></rect></svg>')
 
-      expect(doc instanceof SVG.Nested).toBe(true)
+      expect(doc instanceof SVG.Doc).toBe(true)
       expect(doc.node.nodeName).toBe('svg')
       expect(doc.width()).toBe(200)
       expect(doc.get(0).node.nodeName).toBe('rect')
diff --git a/src/HtmlNode.js b/src/HtmlNode.js
index 30cb4cf..e7dae10 100644
--- a/src/HtmlNode.js
+++ b/src/HtmlNode.js
@@ -8,15 +8,9 @@ SVG.HtmlNode = SVG.invent({
   extend: {
     add: function (element, i) {
       element = createElement(element)
-      if (element instanceof SVG.Nested) {
-        element = new SVG.Doc(element.node)
-        element.setData(JSON.parse(element.node.getAttribute('svgjs:data')) || {})
-      }
 
-      if (i === null) {
-        this.node.appendChild(element.node)
-      } else if (element.node !== this.node.children[i]) {
-        this.node.insertBefore(element.node, this.node.children[i])
+      if (element.node !== this.node.children[i]) {
+        this.node.insertBefore(element.node, this.node.children[i] || null)
       }
 
       return this
diff --git a/src/boxes.js b/src/boxes.js
index cd90207..f14b331 100644
--- a/src/boxes.js
+++ b/src/boxes.js
@@ -126,7 +126,7 @@ SVG.Box = SVG.invent({
   }
 })
 
-SVG.extend([SVG.Doc, SVG.Nested, SVG.Symbol, SVG.Image, SVG.Pattern, SVG.Marker, SVG.ForeignObject, SVG.View], {
+SVG.extend([SVG.Doc, SVG.Symbol, SVG.Image, SVG.Pattern, SVG.Marker, SVG.ForeignObject, SVG.View], {
   viewbox: function (x, y, width, height) {
     // act as getter
     if (x == null) return new SVG.Box(this.attr('viewBox'))
diff --git a/src/doc.js b/src/doc.js
index 2097747..72ea59c 100644
--- a/src/doc.js
+++ b/src/doc.js
@@ -4,7 +4,7 @@ SVG.Doc = SVG.invent({
     this.constructor(node || SVG.create('svg'))
 
     // set svg element attributes and ensure defs node
-    this.namespace().defs()
+    this.namespace()
   },
 
   // Inherit from
@@ -12,8 +12,17 @@ SVG.Doc = SVG.invent({
 
   // Add class methods
   extend: {
+    isRoot: function () {
+      return !this.node.parentNode || !(this.node.parentNode instanceof window.SVGElement) || this.node.parentNode.nodeName === '#document'
+    },
+    // Check if this is a root svg. If not, call docs from this element
+    doc: function () {
+      if (this.isRoot()) return this
+      return SVG.Element.prototype.doc.call(this)
+    },
     // Add namespaces
     namespace: function () {
+      if (!this.isRoot()) return this.doc().namespace()
       return this
         .attr({ xmlns: SVG.ns, version: '1.1' })
         .attr('xmlns:xlink', SVG.xlink, SVG.xmlns)
@@ -21,14 +30,23 @@ SVG.Doc = SVG.invent({
     },
     // Creates and returns defs element
     defs: function () {
+      if (!this.isRoot()) return this.doc().defs()
       return SVG.adopt(this.node.getElementsByTagName('defs')[0]) || this.put(new SVG.Defs())
     },
     // custom parent method
-    parent: function () {
-      return this.node.parentNode.nodeName === '#document' ? null : this.node.parentNode
+    parent: function (type) {
+      if (this.isRoot()) {
+        return this.node.parentNode.nodeName === '#document' ? null : this.node.parentNode
+      }
+
+      return SVG.Element.prototype.parent.call(this, type)
     },
-      // Removes the doc from the DOM
+    // Removes the doc from the DOM
     remove: function () {
+      if (!this.isRoot()) {
+        return SVG.Element.prototype.remove.call(this)
+      }
+
       if (this.parent()) {
         this.parent().removeChild(this.node)
       }
@@ -41,14 +59,12 @@ SVG.Doc = SVG.invent({
         this.node.removeChild(this.node.lastChild)
       }
       return this
-    },
-    toNested: function () {
-      var el = SVG.create('svg')
-      this.node.instance = null
-      el.appendChild(this.node)
-
-      return SVG.adopt(this.node)
+    }
+  },
+  construct: {
+    // Create nested svg document
+    nested: function () {
+      return this.put(new SVG.Doc())
     }
   }
-
 })
diff --git a/src/element.js b/src/element.js
index eca535b..0d08579 100644
--- a/src/element.js
+++ b/src/element.js
@@ -3,8 +3,8 @@
 SVG.Element = SVG.invent({
   // Initialize node
   create: function (node) {
-    // last fired event on node
-    this._event = null
+    // event listener
+    this.events = {}
 
     // initialize data object
     this.dom = {}
@@ -14,6 +14,7 @@ SVG.Element = SVG.invent({
     if (this.node) {
       this.type = node.nodeName
       this.node.instance = this
+      this.events = node.events || {}
 
       if (node.hasAttribute('svgjs:data')) {
         // pull svgjs data from the dom (getAttributeNS doesn't work in html5)
@@ -217,7 +218,8 @@ SVG.Element = SVG.invent({
 
     // Get parent document
     doc: function () {
-      return this instanceof SVG.Doc ? this : this.parent(SVG.Doc)
+      var p = this.parent(SVG.Doc)
+      return p && p.doc()
     },
 
     // Get defs
diff --git a/src/event.js b/src/event.js
index c53e0b3..65b13b0 100644
--- a/src/event.js
+++ b/src/event.js
@@ -1,4 +1,5 @@
 // Add events to elements
+
 ;[ 'click',
   'dblclick',
   'mousedown',
@@ -6,14 +7,14 @@
   'mouseover',
   'mouseout',
   'mousemove',
-  // , 'mouseenter' -> not supported by IE
-  // , 'mouseleave' -> not supported by IE
+  'mouseenter',
+  'mouseleave',
   'touchstart',
   'touchmove',
   'touchleave',
   'touchend',
   'touchcancel' ].forEach(function (event) {
-  // add event to SVG.Element
+    // add event to SVG.Element
     SVG.Element.prototype[event] = function (f) {
     // bind event to element rather than element node
       SVG.on(this, event, f)
@@ -21,32 +22,31 @@
     }
   })
 
-// Initialize listeners stack
-SVG.listeners = []
-SVG.handlerMap = []
 SVG.listenerId = 0
 
 // Add event binder in the SVG namespace
 SVG.on = function (node, events, listener, binding, options) {
+  var l = listener.bind(binding || node)
+  var n = node instanceof SVG.Element ? node.node : node
+
+  // ensure instance object for nodes which are not adopted
+  n.instance = n.instance || {events: {}}
+
+  var bag = n.instance.events
+
+  // add id to listener
+  if (!listener._svgjsListenerId) { listener._svgjsListenerId = ++SVG.listenerId }
+
   events.split(SVG.regex.delimiter).forEach(function (event) {
-    // create listener, get object-index
-    var l = listener.bind(binding || node)
-    var n = node instanceof SVG.Element ? node.node : node
-    var index = (SVG.handlerMap.indexOf(n) + 1 || SVG.handlerMap.push(n)) - 1
     var ev = event.split('.')[0]
     var ns = event.split('.')[1] || '*'
 
     // ensure valid object
-    SVG.listeners[index] = SVG.listeners[index] || {}
-    SVG.listeners[index][ev] = SVG.listeners[index][ev] || {}
-    SVG.listeners[index][ev][ns] = SVG.listeners[index][ev][ns] || {}
-
-    if (!listener._svgjsListenerId) {
-      listener._svgjsListenerId = ++SVG.listenerId
-    }
+    bag[ev] = bag[ev] || {}
+    bag[ev][ns] = bag[ev][ns] || {}
 
     // reference listener
-    SVG.listeners[index][ev][ns][listener._svgjsListenerId] = l
+    bag[ev][ns][listener._svgjsListenerId] = l
 
     // add listener
     n.addEventListener(ev, l, options || false)
@@ -54,91 +54,84 @@ SVG.on = function (node, events, listener, binding, options) {
 }
 
 // Add event unbinder in the SVG namespace
-SVG.off = function (node, event, listener) {
-  var index = SVG.handlerMap.indexOf(node)
-  var ev = event && event.split('.')[0]
-  var ns = event && event.split('.')[1]
-  var namespace = ''
-
-  if (index === -1) return
+SVG.off = function (node, events, listener, options) {
+  var n = node instanceof SVG.Element ? node.node : node
+  if (!n.instance) return
 
-  if (listener) {
-    if (typeof listener === 'function') listener = listener._svgjsListenerId
+  // listener can be a function or a number
+  if (typeof listener === 'function') {
+    listener = listener._svgjsListenerId
     if (!listener) return
+  }
 
-    // remove listener reference
-    if (SVG.listeners[index][ev] && SVG.listeners[index][ev][ns || '*']) {
-      // remove listener
-      node.removeEventListener(ev, SVG.listeners[index][ev][ns || '*'][listener], false)
+  var bag = n.instance.events
 
-      delete SVG.listeners[index][ev][ns || '*'][listener]
-    }
-  } else if (ns && ev) {
-    // remove all listeners for a namespaced event
-    if (SVG.listeners[index][ev] && SVG.listeners[index][ev][ns]) {
-      for (listener in SVG.listeners[index][ev][ns]) {
-        SVG.off(node, [ev, ns].join('.'), listener)
+  ;(events || '').split(SVG.regex.delimiter).forEach(function (event) {
+    var ev = event && event.split('.')[0]
+    var ns = event && event.split('.')[1]
+    var namespace, l
+
+    if (listener) {
+      // remove listener reference
+      if (bag[ev] && bag[ev][ns || '*']) {
+        // removeListener
+        n.removeEventListener(ev, bag[ev][ns || '*'][listener], options || false)
+
+        delete bag[ev][ns || '*'][listener]
       }
+    } else if (ev && ns) {
+      // remove all listeners for a namespaced event
+      if (bag[ev] && bag[ev][ns]) {
+        for (l in bag[ev][ns]) { SVG.off(n, [ev, ns].join('.'), l) }
 
-      delete SVG.listeners[index][ev][ns]
-    }
-  } else if (ns) {
-    // remove all listeners for a specific namespace
-    for (event in SVG.listeners[index]) {
-      for (namespace in SVG.listeners[index][event]) {
-        if (ns === namespace) {
-          SVG.off(node, [event, ns].join('.'))
+        delete bag[ev][ns]
+      }
+    } else if (ns) {
+      // remove all listeners for a specific namespace
+      for (event in bag) {
+        for (namespace in bag[event]) {
+          if (ns === namespace) { SVG.off(n, [event, ns].join('.')) }
         }
       }
-    }
-  } else if (ev) {
-    // remove all listeners for the event
-    if (SVG.listeners[index][ev]) {
-      for (namespace in SVG.listeners[index][ev]) {
-        SVG.off(node, [ev, namespace].join('.'))
+    } else if (ev) {
+      // remove all listeners for the event
+      if (bag[ev]) {
+        for (namespace in bag[ev]) { SVG.off(n, [ev, namespace].join('.')) }
+
+        delete bag[ev]
       }
+    } else {
+      // remove all listeners on a given node
+      for (event in bag) { SVG.off(n, event) }
 
-      delete SVG.listeners[index][ev]
-    }
-  } else {
-    // remove all listeners on a given node
-    for (event in SVG.listeners[index]) {
-      SVG.off(node, event)
+      n.instance.events = {}
     }
-
-    delete SVG.listeners[index]
-    delete SVG.handlerMap[index]
-  }
+  })
 }
 
-//
 SVG.extend(SVG.Element, {
   // Bind given event to listener
   on: function (event, listener, binding, options) {
     SVG.on(this, event, listener, binding, options)
     return this
   },
-
   // Unbind event from listener
   off: function (event, listener) {
     SVG.off(this.node, event, listener)
     return this
   },
-
-  // Fire given event
-  fire: function (event, data) {
+  dispatch: function (event, data) {
     // Dispatch event
     if (event instanceof window.Event) {
       this.node.dispatchEvent(event)
     } else {
       this.node.dispatchEvent(event = new window.CustomEvent(event, {detail: data, cancelable: true}))
     }
-
-    this._event = event
-    return this
+    return event
   },
-
-  event: function () {
-    return this._event
+  // Fire given event
+  fire: function (event, data) {
+    this.dispatch(event, data)
+    return this
   }
 })
diff --git a/src/flatten.js b/src/flatten.js
index 1c32a76..3ba6e22 100644
--- a/src/flatten.js
+++ b/src/flatten.js
@@ -2,7 +2,7 @@ SVG.extend(SVG.Parent, {
   flatten: function (parent) {
     if (this instanceof SVG.Defs) return this
 
-    parent = parent || (this instanceof SVG.Doc ? this : this.parent(SVG.Parent))
+    parent = parent || (this instanceof SVG.Doc && this.isRoot() ? this : this.parent(SVG.Parent))
 
     this.each(function () {
       if (this instanceof SVG.Defs) return this
diff --git a/src/matrix.js b/src/matrix.js
index 970f6ed..557010c 100644
--- a/src/matrix.js
+++ b/src/matrix.js
@@ -270,7 +270,7 @@ SVG.Matrix = SVG.invent({
          This is needed because FF does not return the transformation matrix
          for the inner coordinate system when getScreenCTM() is called on nested svgs.
          However all other Browsers do that */
-      if (this instanceof SVG.Nested) {
+      if (this instanceof SVG.Doc && !this.isRoot()) {
         var rect = this.rect(1, 1)
         var m = rect.node.getScreenCTM()
         rect.remove()
diff --git a/src/nested.js b/src/nested.js
deleted file mode 100644
index 217d59a..0000000
--- a/src/nested.js
+++ /dev/null
@@ -1,16 +0,0 @@
-
-SVG.Nested = SVG.invent({
-  // Initialize node
-  create: 'svg',
-
-  // Inherit from
-  inherit: SVG.Container,
-
-  // Add parent method
-  construct: {
-    // Create nested svg document
-    nested: function () {
-      return this.put(new SVG.Nested())
-    }
-  }
-})
diff --git a/src/parent.js b/src/parent.js
index 0ff1765..d48e086 100644
--- a/src/parent.js
+++ b/src/parent.js
@@ -21,10 +21,8 @@ SVG.Parent = SVG.invent({
     add: function (element, i) {
       element = createElement(element)
 
-      if (i == null) {
-        this.node.appendChild(element.node)
-      } else if (element.node !== this.node.children[i]) {
-        this.node.insertBefore(element.node, this.node.children[i])
+      if (element.node !== this.node.children[i]) {
+        this.node.insertBefore(element.node, this.node.children[i] || null)
       }
 
       return this
diff --git a/src/parser.js b/src/parser.js
index c3ab7a4..84c8d77 100644
--- a/src/parser.js
+++ b/src/parser.js
@@ -11,7 +11,7 @@ SVG.parser = function () {
 }
 
 SVG.parser.nodes = {
-  svg: new SVG.Nested().size(2, 0).css({
+  svg: SVG().size(2, 0).css({
     opacity: 0,
     position: 'absolute',
     left: '-100%',
diff --git a/src/svg.js b/src/svg.js
index e6903da..9b3bfd6 100644
--- a/src/svg.js
+++ b/src/svg.js
@@ -77,7 +77,7 @@ SVG.adopt = function (node) {
   if (!node) return null
 
   // make sure a node isn't already adopted
-  if (node.instance) return node.instance
+  if (node.instance instanceof SVG.Element) return node.instance
 
   if (!(node instanceof window.SVGElement)) {
     return new SVG.HtmlNode(node)
@@ -88,12 +88,14 @@ SVG.adopt = function (node) {
 
   // adopt with element-specific settings
   if (node.nodeName === 'svg') {
-    element = node.parentNode instanceof window.SVGElement ? new SVG.Nested(node) : new SVG.Doc(node)
+    element = new SVG.Doc(node)
   } else if (node.nodeName === 'linearGradient' || node.nodeName === 'radialGradient') {
     element = new SVG.Gradient(node)
   } else if (SVG[capitalize(node.nodeName)]) {
     element = new SVG[capitalize(node.nodeName)](node)
-  } else { element = new SVG.Parent(node) }
+  } else {
+    element = new SVG.Parent(node)
+  }
 
   return element
 }