Let Session emit ProcessingBatchStart/End signals only via explicit helper method

Author: Friedrich W. H. Kossebau

webodf/lib/ops/OdtDocument.js

@@ -502,6 +502,22 @@ ops.OdtDocument = function OdtDocument(odfCanvas) {
         }
     };
 
+    /**
+     * @param {*} args
+     * @return {undefined}
+     */
+    this.prepareBatchProcessing = function(args) {
+        eventNotifier.emit(ops.OdtDocument.signalProcessingBatchStart, args);
+    };
+
+    /**
+     * @param {*} args
+     * @return {undefined}
+     */
+    this.finishBatchProcessing = function (args) {
+        eventNotifier.emit(ops.OdtDocument.signalProcessingBatchEnd, args);
+    };
+
     /**
      * Upgrades literal whitespaces (' ') to <text:s> </text:s>,
      * when given a textNode containing the whitespace and an offset

webodf/lib/ops/Session.js

@@ -46,7 +46,7 @@ ops.Session = function Session(odfCanvas) {
      * @return {undefined}
      */
     function forwardBatchStart(args) {
-        odtDocument.emit(ops.OdtDocument.signalProcessingBatchStart, args);
+        odtDocument.prepareBatchProcessing(args);
     }
 
     /**
@@ -55,7 +55,7 @@ ops.Session = function Session(odfCanvas) {
      * @return {undefined}
      */
     function forwardBatchEnd(args) {
-        odtDocument.emit(ops.OdtDocument.signalProcessingBatchEnd, args);
+        odtDocument.finishBatchProcessing(args);
     }
 
     /**