From: Ulrich-Matthias Schäfer <ulima.ums@googlemail.com>
Date: Sun, 23 Apr 2017 10:52:51 +0000 (+0200)
Subject: ids are not generated upon creation anymore
X-Git-Tag: 3.0.0~85
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=54362a872c75efa2f54be755a1a48ab87ab3e836;p=svg.js.git

ids are not generated upon creation anymore

Instead they are generated when requested (#559)
---

diff --git a/CHANGELOG.md b/CHANGELOG.md
index fc595a0..ade31af 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -37,6 +37,7 @@ The document follows the conventions described in [“Keep a CHANGELOG”](http:
 - `svg()` will now return the element without svg-wrapper
 - new constructor signature for `SVG.Image` and `load()`: `container.image(src, callback) / image.load(src, callback)`
 - changed `style()` to `css()`. Now accepts array as input and returns object when no argument given (#517)
+- ids are not generated upon creation anymore. Instead they are generated when requested (#559)
 
 ### 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 12de8cf..e81cdd6 100644
--- a/dist/svg.js
+++ b/dist/svg.js
@@ -6,7 +6,7 @@
 * @copyright Wout Fierens <wout@mick-wout.com>
 * @license MIT
 *
-* BUILT: Sat Apr 22 2017 22:14:55 GMT+0200 (Mitteleuropäische Sommerzeit)
+* BUILT: Sun Apr 23 2017 12:52:05 GMT+0200 (Mitteleuropäische Sommerzeit)
 */;
 (function(root, factory) {
   /* istanbul ignore next */
@@ -59,12 +59,7 @@ SVG.eid = function(name) {
 // Method for element creation
 SVG.create = function(name) {
   // create element
-  var element = document.createElementNS(this.ns, name)
-
-  // apply unique id
-  element.setAttribute('id', this.eid(name))
-
-  return element
+  return document.createElementNS(this.ns, name)
 }
 
 // Method for extending objects
@@ -1075,7 +1070,7 @@ SVG.Element = SVG.invent({
         .height(new SVG.Number(p.height))
     }
     // Clone element
-  , clone: function(parent, withData) {
+  , clone: function(parent) {
       // write dom data to the dom so the clone can pickup the data
       this.writeDataToDom()
 
@@ -1111,6 +1106,12 @@ SVG.Element = SVG.invent({
     }
     // Get / set id
   , id: function(id) {
+      // generate new id if no id set
+      if(typeof id == 'undefined' && !this.node.id) {
+        this.node.id = SVG.eid(this.type)
+      }
+
+      // dont't set directly width this.node.id to make `null` work correctly
       return this.attr('id', id)
     }
     // Checks whether the given point inside the bounding box of the element
@@ -1136,7 +1137,7 @@ SVG.Element = SVG.invent({
     }
     // Return id on string conversion
   , toString: function() {
-      return this.attr('id')
+      return this.id()
     }
     // Return array of classes on the node
   , classes: function() {
@@ -3352,7 +3353,7 @@ SVG.Mask = SVG.invent({
     }
 
   , targets: function() {
-      return SVG.select('svg [mask*="' +this.id() +'"]')
+      return SVG.select('svg [mask*="' + this.id() + '"]')
     }
   }
 
@@ -3373,7 +3374,7 @@ SVG.extend(SVG.Element, {
     var masker = element instanceof SVG.Mask ? element : this.parent().mask().add(element)
 
     // apply mask
-    return this.attr('mask', 'url("#' + masker.attr('id') + '")')
+    return this.attr('mask', 'url("#' + masker.id() + '")')
   }
   // Unmask element
 , unmask: function() {
@@ -3426,7 +3427,7 @@ SVG.extend(SVG.Element, {
     var clipper = element instanceof SVG.ClipPath ? element : this.parent().clip().add(element)
 
     // apply mask
-    return this.attr('clip-path', 'url("#' + clipper.attr('id') + '")')
+    return this.attr('clip-path', 'url("#' + clipper.id() + '")')
   }
   // Unclip element
 , unclip: function() {
@@ -4939,7 +4940,10 @@ function assignNewId(node) {
     if (node.childNodes[i] instanceof window.SVGElement)
       assignNewId(node.childNodes[i])
 
-  return SVG.adopt(node).id(SVG.eid(node.nodeName))
+  if(node.id)
+    return SVG.adopt(node).id(SVG.eid(node.nodeName))
+
+  return SVG.adopt(node)
 }
 
 // Add more bounding box properties
diff --git a/dist/svg.min.js b/dist/svg.min.js
index cf450fc..b4af23d 100644
--- a/dist/svg.min.js
+++ b/dist/svg.min.js
@@ -1,2 +1,2 @@
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b.Number(e):b.Color.isColor(e)?e=new b.Color(e):Array.isArray(e)&&(e=new b.Array(e)),"leading"==t?this.leading&&this.leading(e):"string"==typeof n?this.node.setAttributeNS(n,t,e.toString()):this.node.setAttribute(t,e.toString()),!this.rebuild||"font-size"!=t&&"x"!=t||this.rebuild(t,e)}return this}}),b.extend(b.Element,{transform:function(t,e){var n,i,r=this;if("object"!=typeof t)return n=new b.Matrix(r).extract(),"string"==typeof t?n[t]:n;if(n=new b.Matrix(r),e=!!e||!!t.relative,null!=t.a)n=e?n.multiply(new b.Matrix(t)):new b.Matrix(t);else if(null!=t.rotation)m(t,r),n=e?n.rotate(t.rotation,t.cx,t.cy):n.rotate(t.rotation-n.extract().rotation,t.cx,t.cy);else if(null!=t.scale||null!=t.scaleX||null!=t.scaleY){if(m(t,r),t.scaleX=null!=t.scale?t.scale:null!=t.scaleX?t.scaleX:1,t.scaleY=null!=t.scale?t.scale:null!=t.scaleY?t.scaleY:1,
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parseFloat(t)})]}).reduce(function(t,e){return"matrix"==e[0]?t.multiply(p(e[1])):t[e[0]].apply(t,e[1])},new b.Matrix);return t},toParent:function(t){if(this==t)return this;var e=this.screenCTM(),n=t.screenCTM().inverse();return this.addTo(t).untransform().transform(n.multiply(e)),this},toDoc:function(){return this.toParent(this.doc())}}),b.Transformation=b.invent({create:function(t,e){if(arguments.length>1&&"boolean"!=typeof e)return this.constructor.call(this,[].slice.call(arguments));if(Array.isArray(t))for(var n=0,i=this.arguments.length;n<i;++n)this[this.arguments[n]]=t[n];else if("object"==typeof t)for(var n=0,i=this.arguments.length;n<i;++n)this[this.arguments[n]]=t[this.arguments[n]];this.inversed=!1,e===!0&&(this.inversed=!0)},extend:{arguments:[],method:"",at:function(t){for(var e=[],n=0,i=this.arguments.length;n<i;++n)e.push(this[this.arguments[n]]);var r=this._undo||new b.Matrix;return r=(new b.Matrix).morph(b.Matrix.prototype[this.method].apply(r,e)).at(t),this.inversed?r.inverse():r},undo:function(t){for(var e=0,n=this.arguments.length;e<n;++e)t[this.arguments[e]]="undefined"==typeof this[this.arguments[e]]?0:t[this.arguments[e]];return t.cx=this.cx,t.cy=this.cy,this._undo=new(b[u(this.method)])(t,!0).at(1),this}}}),b.Translate=b.invent({parent:b.Matrix,inherit:b.Transformation,create:function(t,e){this.constructor.apply(this,[].slice.call(arguments))},extend:{arguments:["transformedX","transformedY"],method:"translate"}}),b.Rotate=b.invent({parent:b.Matrix,inherit:b.Transformation,create:function(t,e){this.constructor.apply(this,[].slice.call(arguments))},extend:{arguments:["rotation","cx","cy"],method:"rotate",at:function(t){var e=(new b.Matrix).rotate((new b.Number).morph(this.rotation-(this._undo?this._undo.rotation:0)).at(t),this.cx,this.cy);return this.inversed?e.inverse():e},undo:function(t){return this._undo=t,this}}}),b.Scale=b.invent({parent:b.Matrix,inherit:b.Transformation,create:function(t,e){this.constructor.apply(this,[].slice.call(arguments))},extend:{arguments:["scaleX","scaleY","cx","cy"],method:"scale"}}),b.Skew=b.invent({parent:b.Matrix,inherit:b.Transformation,create:function(t,e){this.constructor.apply(this,[].slice.call(arguments))},extend:{arguments:["skewX","skewY","cx","cy"],method:"skew"}}),b.extend(b.Element,{css:function(t,e){var n,i,r={};if(0==arguments.length)return 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[h(t[i])]=this.node.style[h(t[i])];return r}if("string"==typeof t)return this.node.style[h(t)];if("object"==typeof t)for(i in t)this.node.style[h(i)]=null==t[i]||b.regex.isBlank.test(t[i])?"":t[i]}return 2==arguments.length&&(this.node.style[h(t)]=null==e||b.regex.isBlank.test(e)?"":e),this}}),b.Parent=b.invent({create:function(t){this.constructor.call(this,t)},inherit:b.Element,extend:{children:function(){return b.utils.map(b.utils.filterSVGElements(this.node.childNodes),function(t){return b.adopt(t)})},add:function(t,e){return null==e?this.node.appendChild(t.node):t.node!=this.node.childNodes[e]&&this.node.insertBefore(t.node,this.node.childNodes[e]),this},put:function(t,e){return this.add(t,e),t},has:function(t){return this.index(t)>=0},index:function(t){return[].slice.call(this.node.childNodes).indexOf(t.node)},get:function(t){return b.adopt(this.node.childNodes[t])},first:function(){return this.get(0)},last:function(){return this.get(this.node.childNodes.length-1)},each:function(t,e){var n,i,r=this.children();for(n=0,i=r.length;n<i;n++)r[n]instanceof b.Element&&t.apply(r[n],[n,r]),e&&r[n]instanceof b.Container&&r[n].each(t,e);return this},removeElement:function(t){return this.node.removeChild(t.node),this},clear:function(){for(;this.node.hasChildNodes();)this.node.removeChild(this.node.lastChild);return delete this._defs,this},defs:function(){return this.doc().defs()}}}),b.extend(b.Parent,{flatten:function(t){return this instanceof b.Defs?this:(t=t||(this instanceof b.Doc?this:this.parent(b.Parent)),this.each(function(){return this instanceof b.Defs?this:this instanceof b.Parent?this.flatten(t):this.toParent(t)}),this.node.firstChild||this.remove(),this)}}),b.Container=b.invent({create:function(t){this.constructor.call(this,t)},inherit:b.Parent}),["click","dblclick","mousedown","mouseup","mouseover","mouseout","mousemove","touchstart","touchmove","touchleave","touchend","touchcancel"].forEach(function(t){b.Element.prototype[t]=function(e){return b.on(this.node,t,e),this}}),b.listeners=[],b.handlerMap=[],b.listenerId=0,b.on=function(t,e,n,i,r){var 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b.listeners[i][r])b.off(t,[r,a].join("."));delete b.listeners[i][r]}}else{for(e in b.listeners[i])b.off(t,e);delete b.listeners[i],delete b.handlerMap[i]}},b.extend(b.Element,{on:function(t,e,n,i){return b.on(this.node,t,e,n,i),this},off:function(t,e){return b.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}}),b.Defs=b.invent({create:"defs",inherit:b.Container}),b.G=b.invent({create:"g",inherit:b.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 b.G)}}}),b.extend(b.Element,{siblings:function(){return this.parent().children()},position:function(){return this.parent().index(this)},next:function(){return this.siblings()[this.position()+1]},previous: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 b.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 b.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}}),b.Mask=b.invent({create:"mask",inherit:b.Container,extend:{remove:function(){return this.targets().forEach(function(t){t.unmask()}),b.Element.prototype.remove.call(this)},targets:function(){return b.select('svg [mask*="'+this.id()+'"]')}},construct:{mask:function(){return this.defs().put(new b.Mask)}}}),b.extend(b.Element,{maskWith:function(t){var e=t instanceof b.Mask?t:this.parent().mask().add(t);return this.attr("mask",'url("#'+e.attr("id")+'")')},unmask:function(){return this.attr("mask",null)},masker:function(){return this.reference("mask")}}),b.ClipPath=b.invent({create:"clipPath",inherit:b.Container,extend:{remove:function(){return this.targets().forEach(function(t){t.unclip()}),b.Element.prototype.remove.call(this)},targets:function(){return b.select('svg [clip-path*="'+this.id()+'"]')}},construct:{clip:function(){return this.defs().put(new b.ClipPath)}}}),b.extend(b.Element,{clipWith:function(t){var e=t instanceof b.ClipPath?t:this.parent().clip().add(t);return this.attr("clip-path",'url("#'+e.attr("id")+'")')},unclip:function(){return this.attr("clip-path",null)},clipper:function(){return this.reference("clip-path")}}),b.Gradient=b.invent({create:function(t){this.constructor.call(this,b.create(t+"Gradient"))},inherit:b.Container,extend:{at:function(t,e,n){return this.put(new b.Stop).update(t,e,n)},update:function(t){return this.clear(),"function"==typeof t&&t.call(this,this),this},fill:function(){return"url(#"+this.id()+")"},toString:function(){return this.fill()},attr:function(t,e,n){return"transform"==t&&(t="gradientTransform"),b.Container.prototype.attr.call(this,t,e,n)}},construct:{gradient:function(t,e){return this.defs().gradient(t,e)}}}),b.extend(b.Gradient,b.FX,{from:function(t,e){return"radialGradient"==(this._target||this).type?this.attr({fx:new b.Number(t),fy:new b.Number(e)}):this.attr({x1:new b.Number(t),y1:new b.Number(e)})},to:function(t,e){return"radialGradient"==(this._target||this).type?this.attr({cx:new b.Number(t),cy:new b.Number(e)}):this.attr({x2:new b.Number(t),y2:new b.Number(e)})}}),b.extend(b.Defs,{gradient:function(t,e){return this.put(new b.Gradient(t)).update(e)}}),b.Stop=b.invent({create:"stop",inherit:b.Element,extend:{update:function(t){return("number"==typeof t||t instanceof b.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 b.Number(t.offset)),this}}}),b.Pattern=b.invent({create:"pattern",inherit:b.Container,extend:{fill:function(){return"url(#"+this.id()+")"},update:function(t){return this.clear(),"function"==typeof t&&t.call(this,this),this},toString:function(){return this.fill()},attr:function(t,e,n){return"transform"==t&&(t="patternTransform"),b.Container.prototype.attr.call(this,t,e,n)}},construct:{pattern:function(t,e,n){return this.defs().pattern(t,e,n)}}}),b.extend(b.Defs,{pattern:function(t,e,n){return this.put(new b.Pattern).update(n).attr({x:0,y:0,width:t,height:e,patternUnits:"userSpaceOnUse"})}}),b.Doc=b.invent({create:function(t){t&&(t="string"==typeof t?e.getElementById(t):t,"svg"==t.nodeName?this.constructor.call(this,t):(this.constructor.call(this,b.create("svg")),t.appendChild(this.node),this.size("100%","100%")),this.namespace().defs())},inherit:b.Container,extend:{namespace:function(){return this.attr({xmlns:b.ns,version:"1.1"}).attr("xmlns:xlink",b.xlink,b.xmlns).attr("xmlns:svgjs",b.svgjs,b.xmlns)},defs:function(){if(!this._defs){var t;(t=this.node.getElementsByTagName("defs")[0])?this._defs=b.adopt(t):this._defs=new b.Defs,this.node.appendChild(this._defs.node)}return this._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 delete this._defs,b.parser.draw.parentNode||this.node.appendChild(b.parser.draw),this}}}),b.Shape=b.invent({create:function(t){this.constructor.call(this,t)},inherit:b.Element}),b.Bare=b.invent({create:function(t,e){if(this.constructor.call(this,b.create(t)),e)for(var n in e.prototype)"function"==typeof e.prototype[n]&&(this[n]=e.prototype[n])},inherit:b.Element,extend:{words:function(t){for(;this.node.hasChildNodes();)this.node.removeChild(this.node.lastChild);return this.node.appendChild(e.createTextNode(t)),this}}}),b.extend(b.Parent,{element:function(t,e){return this.put(new b.Bare(t,e))}}),b.Symbol=b.invent({create:"symbol",inherit:b.Container,construct:{symbol:function(){return this.put(new b.Symbol)}}}),b.Use=b.invent({create:"use",inherit:b.Shape,extend:{element:function(t,e){return this.attr("href",(e||"")+"#"+t,b.xlink)}},construct:{use:function(t,e){return this.put(new b.Use).element(t,e)}}}),b.Rect=b.invent({create:"rect",inherit:b.Shape,construct:{rect:function(t,e){return this.put(new b.Rect).size(t,e)}}}),b.Circle=b.invent({create:"circle",inherit:b.Shape,construct:{circle:function(t){return this.put(new b.Circle).rx(new b.Number(t).divide(2)).move(0,0)}}}),b.extend(b.Circle,b.FX,{rx:function(t){return this.attr("r",t)},ry:function(t){return this.rx(t)}}),b.Ellipse=b.invent({create:"ellipse",inherit:b.Shape,construct:{ellipse:function(t,e){return this.put(new b.Ellipse).size(t,e).move(0,0)}}}),b.extend(b.Ellipse,b.Rect,b.FX,{rx:function(t){return this.attr("rx",t)},ry:function(t){return this.attr("ry",t)}}),b.extend(b.Circle,b.Ellipse,{x:function(t){return null==t?this.cx()-this.rx():this.cx(t+this.rx())},y:function(t){return 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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)}}),b.Path=b.invent({create:"path",inherit:b.Shape,extend:{morphArray:b.PathArray,array:function(){return this._array||(this._array=new b.PathArray(this.attr("d")))},plot:function(t){return null==t?this.array():this.clear().attr("d","string"==typeof t?t:this._array=new 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=f(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();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),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(){this.constructor.call(this,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 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this._build===!1&&this.clear(),this.node.appendChild(e.createTextNode(t)),this},tspan:function(t){var e=(this.textPath&&this.textPath()||this).node,n=new b.Tspan;return this._build===!1&&this.clear(),e.appendChild(n.node),n.text(t)},length:function(){return this.node.getComputedTextLength()}}),b.TextPath=b.invent({create:"textPath",inherit:b.Parent,parent:b.Text,construct:{path:function(t){for(var e=new b.TextPath,n=this.doc().defs().path(t);this.node.hasChildNodes();)e.node.appendChild(this.node.firstChild);return this.node.appendChild(e.node),e.attr("href","#"+n,b.xlink),this},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(){var t=this.textPath();if(t)return t.reference("href")},textPath:function(){if(this.node.firstChild&&"textPath"==this.node.firstChild.nodeName)return b.adopt(this.node.firstChild)}}}),b.Nested=b.invent({create:function(){this.constructor.call(this,b.create("svg")),this.css("overflow","visible")},inherit:b.Container,construct:{nested:function(){return this.put(new b.Nested)}}}),b.A=b.invent({create:"a",inherit:b.Container,extend:{to:function(t){return this.attr("href",t,b.xlink)},show:function(t){return this.attr("show",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 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this},b.extend(b.Element,b.FX,n)}),b.extend(b.Element,b.FX,{rotate:function(t,e,n){return this.transform({rotation:t,cx:e,cy:n})},skew:function(t,e,n,i){return 1==arguments.length||3==arguments.length?this.transform({skew:t,cx:e,cy:n}):this.transform({skewX:t,skewY:e,cx:n,cy:i})},scale:function(t,e,n,i){return 1==arguments.length||3==arguments.length?this.transform({scale:t,cx:e,cy:n}):this.transform({scaleX:t,scaleY:e,cx:n,cy:i})},translate:function(t,e){return this.transform({x:t,y:e})},flip:function(t,e){return e="number"==typeof t?t:e,this.transform({flip:t||"both",offset:e})},matrix:function(t){return this.attr("transform",new b.Matrix(6==arguments.length?[].slice.call(arguments):t))},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:n===!0||"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 e in t)this.remember(e,t[e]);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(w(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 A="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),s=[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)];return s.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(),n(t)&&!i(this.node))throw new Exception("Element not in the dom")}catch(n){try{var e=this.clone(b.parser.draw.instance).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.Nested,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});
\ No newline at end of file
diff --git a/spec/spec/clip.js b/spec/spec/clip.js
index f2c4ed2..f333039 100644
--- a/spec/spec/clip.js
+++ b/spec/spec/clip.js
@@ -20,7 +20,7 @@ describe('ClipPath', function() {
   })
 
   it('sets the "clip-path" attribute on the cliped element with the clip id', function() {
-    expect(rect.attr('clip-path')).toBe('url("#' + circle.parent().attr('id') + '")')
+    expect(rect.attr('clip-path')).toBe('url("#' + circle.parent().id() + '")')
   })
 
   it('references the clip element in the masked element', function() {
diff --git a/spec/spec/element.js b/spec/spec/element.js
index 6dbf8ea..18343d2 100644
--- a/spec/spec/element.js
+++ b/spec/spec/element.js
@@ -126,12 +126,29 @@ describe('Element', function() {
       rect = draw.rect(100,100)
     })
 
+    it('generates an id when getting if no id is set on the element', function() {
+      expect(rect.attr('id')).toBe(undefined)
+      expect(rect.id()).not.toBe(null)
+      expect(rect.node.id).not.toBe(null)
+    })
+    it('increases the global id sequence', function() {
+      var did = SVG.did
+      rect.id()
+    
+      expect(did + 1).toBe(SVG.did)
+    })
+    it('adds a unique id containing the node name', function() {
+      var did = SVG.did
+      rect.id()
+    
+      expect(rect.attr('id')).toBe('SvgjsRect' + did)
+    })
     it('gets the value if the id attribute without an argument', function() {
       expect(rect.id()).toBe(rect.attr('id'))
     })
     it('sets the value of the id', function() {
       rect.id('new_id')
-      expect(rect.attr('id')).toBe('new_id')
+      expect(rect.id()).toBe('new_id')
     })
   })
 
@@ -644,7 +661,7 @@ describe('Element', function() {
     })
     it('assigns a new id to the cloned element', function() {
       clone = rect.clone()
-      expect(clone.attr('id')).not.toBe(rect.attr('id'))
+      expect(clone.id()).not.toBe(rect.id())
     })
     it('copies all child nodes as well', function() {
       clone = group.clone()
@@ -652,9 +669,9 @@ describe('Element', function() {
     })
     it('assigns a new id to cloned child elements', function() {
       clone = group.clone()
-      expect(clone.attr('id')).not.toEqual(group.attr('id'))
-      expect(clone.get(0).attr('id')).not.toBe(group.get(0).attr('id'))
-      expect(clone.get(1).attr('id')).not.toBe(group.get(1).attr('id'))
+      expect(clone.id()).not.toEqual(group.id())
+      expect(clone.get(0).id()).not.toBe(group.get(0).id())
+      expect(clone.get(1).id()).not.toBe(group.get(1).id())
     })
     it('inserts the clone after the cloned element', function() {
       clone = rect.clone()
@@ -677,7 +694,7 @@ describe('Element', function() {
   describe('toString()', function() {
     it('returns the element id', function() {
       var rect = draw.rect(100,100).center(321,567).fill('#f06')
-      expect(rect + '').toBe(rect.attr('id'))
+      expect(rect + '').toBe(rect.id())
     })
   })
 
@@ -809,13 +826,13 @@ describe('Element', function() {
         // Test for different browsers namely Firefox and Chrome
         expect(
             // IE
-            toBeTested === '<svg xmlns:svgjs="http://svgjs.com/svgjs" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" xmlns="http://www.w3.org/2000/svg" height="100" width="100" id="' + draw.id() + '"><rect height="100" width="100"></rect><circle fill="#ff0066" cy="50" cx="50" r="50"></circle></svg>'
+            toBeTested === '<svg xmlns:svgjs="http://svgjs.com/svgjs" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" xmlns="http://www.w3.org/2000/svg" height="100" width="100"><rect height="100" width="100"></rect><circle fill="#ff0066" cy="50" cx="50" r="50"></circle></svg>'
 
             // Firefox
-         || toBeTested === '<svg id="' + draw.id() + '" width="100" height="100" xmlns="http://www.w3.org/2000/svg" version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svgjs="http://svgjs.com/svgjs"><rect width="100" height="100"></rect><circle r="50" cx="50" cy="50" fill="#ff0066"></circle></svg>'
+         || toBeTested === '<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg" version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svgjs="http://svgjs.com/svgjs"><rect width="100" height="100"></rect><circle r="50" cx="50" cy="50" fill="#ff0066"></circle></svg>'
 
             // svgdom
-         || toBeTested === '<svg id="' + draw.id() + '" xmlns="http://www.w3.org/2000/svg" version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svgjs="http://svgjs.com/svgjs" width="100" height="100"><svg id="SvgjsSvg1002" width="2" height="0" style="overflow: hidden; top: -100%; left: -100%; position: absolute; opacity: 0"><polyline id="SvgjsPolyline1003" points="10,10 20,10 30,10"></polyline><path id="SvgjsPath1004" d="M80 80A45 45 0 0 0 125 125L125 80Z "></path></svg><rect width="100" height="100"></rect><circle r="50" cx="50" cy="50" fill="#ff0066"></circle></svg>'
+         || toBeTested === '<svg xmlns="http://www.w3.org/2000/svg" version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svgjs="http://svgjs.com/svgjs" width="100" height="100"><svg id="SvgjsSvg1002" width="2" height="0" style="overflow: hidden; top: -100%; left: -100%; position: absolute; opacity: 0"><polyline id="SvgjsPolyline1003" points="10,10 20,10 30,10"></polyline><path id="SvgjsPath1004" d="M80 80A45 45 0 0 0 125 125L125 80Z "></path></svg><rect width="100" height="100"></rect><circle r="50" cx="50" cy="50" fill="#ff0066"></circle></svg>'
         ).toBeTruthy()
 
       })
diff --git a/spec/spec/gradient.js b/spec/spec/gradient.js
index 3fb74f9..b7db2f0 100644
--- a/spec/spec/gradient.js
+++ b/spec/spec/gradient.js
@@ -29,7 +29,7 @@ describe('Gradient', function() {
 
   describe('fill()', function() {
     it('returns the id of the gradient wrapped in url()', function() {
-      expect(gradient.fill()).toBe('url(#' + gradient.attr('id') + ')')
+      expect(gradient.fill()).toBe('url(#' + gradient.id() + ')')
     })
   })
   
@@ -67,11 +67,11 @@ describe('Gradient', function() {
 
   describe('toString()', function() {
     it('returns the id of the gradient wrapped in url()', function() {
-      expect(gradient + '').toBe('url(#' + gradient.attr('id') + ')')
+      expect(gradient + '').toBe('url(#' + gradient.id() + ')')
     })
     it('is called when instance is passed as an attribute value', function() {
       rect.attr('fill', gradient)
-      expect(rect.attr('fill')).toBe('url(#' + gradient.attr('id') + ')')
+      expect(rect.attr('fill')).toBe('url(#' + gradient.id() + ')')
     })
   })
 
diff --git a/spec/spec/mask.js b/spec/spec/mask.js
index d6921cc..e61ccbd 100644
--- a/spec/spec/mask.js
+++ b/spec/spec/mask.js
@@ -20,7 +20,7 @@ describe('Mask', function() {
   })
 
   it('sets the "mask" attribute on the masked element with the mask id', function() {
-    expect(rect.attr('mask')).toBe('url("#' + circle.parent().attr('id') + '")')
+    expect(rect.attr('mask')).toBe('url("#' + circle.parent().id() + '")')
   })
 
   it('references the mask element in the masked element', function() {
diff --git a/spec/spec/pattern.js b/spec/spec/pattern.js
index e12d11e..3a749c1 100644
--- a/spec/spec/pattern.js
+++ b/spec/spec/pattern.js
@@ -25,7 +25,7 @@ describe('Pattern', function() {
 
   describe('fill()', function() {
     it('returns the id of the pattern wrapped in url()', function() {
-      expect(pattern.fill()).toBe('url(#' + pattern.attr('id') + ')')
+      expect(pattern.fill()).toBe('url(#' + pattern.id() + ')')
     })
   })
 
@@ -37,15 +37,15 @@ describe('Pattern', function() {
 
   describe('toString()', function() {
     it('returns the id of the pattern wrapped in url()', function() {
-      expect(pattern + '').toBe('url(#' + pattern.attr('id') + ')')
+      expect(pattern + '').toBe('url(#' + pattern.id() + ')')
     })
     it('is called when instance is passed as an attribute value', function() {
       rect.attr('fill', pattern)
-      expect(rect.attr('fill')).toBe('url(#' + pattern.attr('id') + ')')
+      expect(rect.attr('fill')).toBe('url(#' + pattern.id() + ')')
     })
     it('is called when instance is passed in a fill() method', function() {
       rect.fill(pattern)
-      expect(rect.attr('fill')).toBe('url(#' + pattern.attr('id') + ')')
+      expect(rect.attr('fill')).toBe('url(#' + pattern.id() + ')')
     })
   })
 
diff --git a/spec/spec/selector.js b/spec/spec/selector.js
index ea49a6e..92aa66f 100644
--- a/spec/spec/selector.js
+++ b/spec/spec/selector.js
@@ -4,11 +4,11 @@ describe('Selector', function() {
     it('gets an element\'s instance by id', function() {
       var rect = draw.rect(111, 333)
       
-      expect(SVG.get(rect.attr('id'))).toBe(rect)
+      expect(SVG.get(rect.id())).toBe(rect)
     })
     it('makes all the element\'s methods available', function() {
       var element = draw.group()
-        , got = SVG.get(element.attr('id'))
+        , got = SVG.get(element.id())
       
       expect(got.attr()).toEqual(element.attr())
     })
diff --git a/spec/spec/svg.js b/spec/spec/svg.js
index 35f42e8..5203544 100644
--- a/spec/spec/svg.js
+++ b/spec/spec/svg.js
@@ -39,18 +39,6 @@ describe('SVG', function() {
 
       expect(element.nodeName).toBe('rect')
     })
-    it('increases the global id sequence', function() {
-      var did = SVG.did
-        , element = SVG.create('rect')
-
-      expect(did + 1).toBe(SVG.did)
-    })
-    it('adds a unique id containing the node name', function() {
-      var did = SVG.did
-        , element = SVG.create('rect')
-
-      expect(element.getAttribute('id')).toBe('SvgjsRect' + did)
-    })
   })
 
   describe('extend()', function() {
diff --git a/src/clip.js b/src/clip.js
index dd2f7b7..b43712e 100644
--- a/src/clip.js
+++ b/src/clip.js
@@ -40,7 +40,7 @@ SVG.extend(SVG.Element, {
     var clipper = element instanceof SVG.ClipPath ? element : this.parent().clip().add(element)
 
     // apply mask
-    return this.attr('clip-path', 'url("#' + clipper.attr('id') + '")')
+    return this.attr('clip-path', 'url("#' + clipper.id() + '")')
   }
   // Unclip element
 , unclip: function() {
diff --git a/src/element.js b/src/element.js
index 1e3dcb0..cedaf2d 100644
--- a/src/element.js
+++ b/src/element.js
@@ -58,7 +58,7 @@ SVG.Element = SVG.invent({
         .height(new SVG.Number(p.height))
     }
     // Clone element
-  , clone: function(parent, withData) {
+  , clone: function(parent) {
       // write dom data to the dom so the clone can pickup the data
       this.writeDataToDom()
 
@@ -94,6 +94,12 @@ SVG.Element = SVG.invent({
     }
     // Get / set id
   , id: function(id) {
+      // generate new id if no id set
+      if(typeof id == 'undefined' && !this.node.id) {
+        this.node.id = SVG.eid(this.type)
+      }
+      
+      // dont't set directly width this.node.id to make `null` work correctly
       return this.attr('id', id)
     }
     // Checks whether the given point inside the bounding box of the element
@@ -119,7 +125,7 @@ SVG.Element = SVG.invent({
     }
     // Return id on string conversion
   , toString: function() {
-      return this.attr('id')
+      return this.id()
     }
     // Return array of classes on the node
   , classes: function() {
diff --git a/src/helpers.js b/src/helpers.js
index 461975a..6a07482 100644
--- a/src/helpers.js
+++ b/src/helpers.js
@@ -38,7 +38,7 @@ function matches(el, selector) {
 }
 
 // Convert dash-separated-string to camelCase
-function camelCase(s) { 
+function camelCase(s) {
   return s.toLowerCase().replace(/-(.)/g, function(m, g) {
     return g.toUpperCase()
   })
@@ -49,7 +49,7 @@ function capitalize(s) {
   return s.charAt(0).toUpperCase() + s.slice(1)
 }
 
-// Ensure to six-based hex 
+// Ensure to six-based hex
 function fullHex(hex) {
   return hex.length == 4 ?
     [ '#',
@@ -69,13 +69,13 @@ function compToHex(comp) {
 function proportionalSize(element, width, height) {
   if (width == null || height == null) {
     var box = element.bbox()
-    
+
     if (width == null)
       width = box.width / box.height * height
     else if (height == null)
       height = box.height / box.width * width
   }
-  
+
   return {
     width:  width
   , height: height
@@ -99,7 +99,7 @@ function arrayToMatrix(a) {
 function parseMatrix(matrix) {
   if (!(matrix instanceof SVG.Matrix))
     matrix = new SVG.Matrix(matrix)
-  
+
   return matrix
 }
 
@@ -142,7 +142,7 @@ function arrayToString(a) {
       }
     }
   }
-  
+
   return s + ' '
 }
 
@@ -153,7 +153,10 @@ function assignNewId(node) {
     if (node.childNodes[i] instanceof window.SVGElement)
       assignNewId(node.childNodes[i])
 
-  return SVG.adopt(node).id(SVG.eid(node.nodeName))
+  if(node.id)
+    return SVG.adopt(node).id(SVG.eid(node.nodeName))
+
+  return SVG.adopt(node)
 }
 
 // Add more bounding box properties
diff --git a/src/mask.js b/src/mask.js
index 4371b37..610608e 100644
--- a/src/mask.js
+++ b/src/mask.js
@@ -19,7 +19,7 @@ SVG.Mask = SVG.invent({
     }
 
   , targets: function() {
-      return SVG.select('svg [mask*="' +this.id() +'"]')
+      return SVG.select('svg [mask*="' + this.id() + '"]')
     }
   }
 
@@ -40,7 +40,7 @@ SVG.extend(SVG.Element, {
     var masker = element instanceof SVG.Mask ? element : this.parent().mask().add(element)
 
     // apply mask
-    return this.attr('mask', 'url("#' + masker.attr('id') + '")')
+    return this.attr('mask', 'url("#' + masker.id() + '")')
   }
   // Unmask element
 , unmask: function() {
diff --git a/src/svg.js b/src/svg.js
index 0716a0a..043e245 100644
--- a/src/svg.js
+++ b/src/svg.js
@@ -36,12 +36,7 @@ SVG.eid = function(name) {
 // Method for element creation
 SVG.create = function(name) {
   // create element
-  var element = document.createElementNS(this.ns, name)
-
-  // apply unique id
-  element.setAttribute('id', this.eid(name))
-
-  return element
+  return document.createElementNS(this.ns, name)
 }
 
 // Method for extending objects