editor: start using data api on text nodes for keeping references to canvas elements

[fnpeditor.git] / src / wlxml / extensions / metadata / metadata.js

diff --git a/src/wlxml/extensions/metadata/metadata.js b/src/wlxml/extensions/metadata/metadata.js
index b19cd52..899306d 100644 (file)
--- a/src/wlxml/extensions/metadata/metadata.js
+++ b/src/wlxml/extensions/metadata/metadata.js
@@ -17,6 +17,9 @@ _.extend(Row.prototype, {
     ChangeProperty: smartxmlTransformations.createContextTransformation({
         impl: function(t, rowIndex, propName, value) {
             var row = this.getMetadata().at(rowIndex);
+            if(row.getValue() === value) {
+                return;
+            }
             t.rowIndex = rowIndex;
             t.propName = propName;
             t.oldValue = row[propName];
@@ -85,8 +88,10 @@ _.extend(Metadata.prototype, {
             this.triggerChangeEvent('metadataRemoved', {row: t.row});
         },
         undo: function(t) {
-            var metadata = this.getMetadata();
-            metadata._rows.splice(t.rowIdx, 0, new Row(t.row.getKey(), t.row.getValue(), metadata));
+            var metadata = this.getMetadata(),
+                row = new Row(t.row.getKey(), t.row.getValue(), metadata);
+            metadata._rows.splice(t.rowIdx, 0, row);
+            this.triggerChangeEvent('metadataAdded', {row: row});
         }
     }),