Separated core from optional libraries

1 files changed, 53 insertions, 0 deletions

diff --git a/src/arrange.js b/src/arrange.js
new file mode 100644
index 0000000..d7fcb5f
--- /dev/null
+++ b/src/arrange.js
@@ -0,0 +1,53 @@
+
+// add backward / forward functionality to elements
+SVG.extend(SVG.Element, {
+  
+  // get all siblings, including me
+  siblings: function() {
+    return this.mother().children();
+  },
+  
+  // send given element one step forwards
+  forward: function() {
+    var i = this.siblings().indexOf(this);
+    this.mother().remove(this).add(this, i + 1);
+    
+    return this;
+  },
+  
+  // send given element one step backwards
+  backward: function() {
+    var i, p = this.mother();
+    
+    p.levelDefs();
+    
+    i = this.siblings().indexOf(this);
+    
+    if (i > 1)
+      p.remove(this).add(this, i - 1);
+    
+    return this;
+  },
+  
+  // send given element all the way to the front
+  front: function() {
+    this.mother().remove(this).add(this);
+    
+    return this;
+  },
+  
+  // send given element all the way to the back
+  back: function() {
+    var i, p = this.mother();
+    
+    p.levelDefs();
+    
+    i = this.siblings().indexOf(this);
+    
+    if (i > 1)
+      p.remove(this).add(this, 0);
+    
+    return this;
+  }
+  
+});
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