Removed all structural references

1 files changed, 25 insertions, 56 deletions

diff --git a/src/doc.js b/src/doc.js
index a10bffe..54b7c70 100755
--- a/src/doc.js
+++ b/src/doc.js
@@ -1,32 +1,24 @@
 SVG.Doc = SVG.invent({
   // Initialize node
   create: function(element) {
-    /* ensure the presence of a html element */
-    this.parent = typeof element == 'string' ?
+    /* ensure the presence of a dom element */
+    element = typeof element == 'string' ?
       document.getElementById(element) :
       element
     
     /* If the target is an svg element, use that element as the main wrapper.
        This allows svg.js to work with svg documents as well. */
-    this.constructor
-      .call(this, this.parent.nodeName == 'svg' ? this.parent : SVG.create('svg'))
+    if (element.nodeName == 'svg') {
+      this.constructor.call(this, element)
+    } else {
+      this.constructor.call(this, SVG.create('svg'))
+      element.appendChild(this.node)
+    }
     
     /* set svg element attributes */
     this
       .attr({ xmlns: SVG.ns, version: '1.1', width: '100%', height: '100%' })
       .attr('xmlns:xlink', SVG.xlink, SVG.xmlns)
-    
-    /* create the <defs> node */
-    this._defs = new SVG.Defs
-    this._defs.parent = this
-    this.node.appendChild(this._defs.node)
-
-    /* turn off sub pixel offset by default */
-    this.doSpof = false
-    
-    /* ensure correct rendering */
-    if (this.parent != this.node)
-      this.stage()
   }
 
   // Inherit from
@@ -34,49 +26,26 @@ SVG.Doc = SVG.invent({
 
   // Add class methods
 , extend: {
-    /* enable drawing */
-    stage: function() {
-      var element = this
-
-      /* insert element */
-      this.parent.appendChild(this.node)
-
-      /* fix sub-pixel offset */
-      element.spof()
-      
-      /* make sure sub-pixel offset is fixed every time the window is resized */
-      SVG.on(window, 'resize', function() {
-        element.spof()
-      })
-
-      return this
-    }
-
     // Creates and returns defs element
-  , defs: function() {
-      return this._defs
-    }
-
-    // Fix for possible sub-pixel offset. See:
-    // https://bugzilla.mozilla.org/show_bug.cgi?id=608812
-  , spof: function() {
-      if (this.doSpof) {
-        var pos = this.node.getScreenCTM()
-        
-        if (pos)
-          this
-            .style('left', (-pos.e % 1) + 'px')
-            .style('top',  (-pos.f % 1) + 'px')
+    defs: function() {
+      if (!this._defs) {
+        var defs
+
+        // Find or create a defs element in this instance
+        if (defs = this.node.getElementsByTagName('defs')[0])
+          this._defs = SVG.adopt(defs)
+        else
+          this._defs = new SVG.Defs
+
+        // Make sure the defs node is at the end of the stack
+        this.node.appendChild(this._defs.node)
       }
-      
-      return this
-    }
-
-    // Enable sub-pixel offset
-  , fixSubPixelOffset: function() {
-      this.doSpof = true
 
-      return this
+      return this._defs
+    }
+    // custom parent method
+  , parent: function() {
+      return this.node.parentNode.nodeName == '#document' ? null : this.node.parentNode
     }
   }