smartxml: DocumentNode.isInDocument syntactic sugar

[fnpeditor.git] / src / smartxml / smartxml.js

diff --git a/src/smartxml/smartxml.js b/src/smartxml/smartxml.js
index 08897cc..8924e7f 100644 (file)
--- a/src/smartxml/smartxml.js
+++ b/src/smartxml/smartxml.js
@@ -79,6 +79,10 @@ $.extend(DocumentNode.prototype, {
         return this.document.root.sameNode(this);
     },
 
+    isInDocument: function() {
+        return this.document.containsNode(this);
+    },
+
     isSiblingOf: function(node) {
         return node && this.parent().sameNode(node.parent());
     },