smartxml: helper functions

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

diff --git a/src/smartxml/smartxml.js b/src/smartxml/smartxml.js
index 31faef0..dcecc64 100644 (file)
--- a/src/smartxml/smartxml.js
+++ b/src/smartxml/smartxml.js
@@ -78,6 +78,10 @@ $.extend(DocumentNode.prototype, {
         return this.document.root.sameNode(this);
     },
 
+    isSiblingOf: function(node) {
+        return node && this.parent().sameNode(node.parent());
+    },
+
     sameNode: function(otherNode) {
         return !!(otherNode) && this.nativeNode === otherNode.nativeNode;
     },
@@ -143,6 +147,10 @@ $.extend(DocumentNode.prototype, {
             return 0;
         }
         return this.parent().indexOf(this);
+    },
+
+    getNearestElementNode: function() {
+        return this.nodeType === Node.ELEMENT_NODE ? this : this.parent();
     }
 });
 
@@ -479,7 +487,7 @@ $.extend(Document.prototype, Backbone.Events, {
         if(!this._currentTransaction) {
             return this.transaction(function() {
                 return this.transform(Transformation, args);
-            }, this);
+            }, {context: this});
         }
 
         if(typeof Transformation === 'function') {
@@ -581,13 +589,26 @@ $.extend(Document.prototype, Backbone.Events, {
         this.replaceRoot(this._rollbackBackup);
         this._rollbackBackup = null;
         this._currentTransaction = null;
+        this._transformationLevel = 0;
     },
 
-    transaction: function(callback, context, metadata) {
+    transaction: function(callback, params) {
         var toret;
-        this.startTransaction(metadata);
-        toret = callback.call(context);
+        params = params || {};
+        this.startTransaction(params.metadata);
+        try {
+            toret = callback.call(params.context || this);
+        } catch(e) {
+            if(params.error) {
+                params.error(e);
+            }
+            this.rollbackTransaction();
+            return;
+        }
         this.endTransaction();
+        if(params.success) {
+            params.success(toret);
+        }
         return toret;
     },