[DE][PE] Debug commenting in view mode.

apps/documenteditor/main/app/view/DocumentHolder.js

@@ -1820,7 +1820,7 @@ define([
                     var isInChart = (value.imgProps && value.imgProps.value && !_.isNull(value.imgProps.value.get_ChartProperties()));
 
                     menuViewUndo.setVisible(me.mode.canCoAuthoring && me.mode.canComments);
-                    menuViewUndo.setDisabled(/* !me.api.asc_canUndo()*/);
+                    menuViewUndo.setDisabled(!me.api.asc_getCanUndo());
                     menuViewCopySeparator.setVisible(!isInChart && me.api.can_AddQuotedComment() !== false && me.mode.canCoAuthoring && me.mode.canComments);
                     menuViewAddComment.setVisible(!isInChart && me.api.can_AddQuotedComment() !== false && me.mode.canCoAuthoring && me.mode.canComments);
                     menuViewAddComment.setDisabled(value.paraProps && value.paraProps.locked === true);

apps/presentationeditor/main/app/view/DocumentHolder.js

@@ -1716,7 +1716,7 @@ define([
             this.viewModeMenu = new Common.UI.Menu({
                 initMenu: function (value) {
                     menuViewUndo.setVisible(me.mode.canCoAuthoring && me.mode.canComments);
-                    menuViewUndo.setDisabled(/* !me.api.asc_canUndo()*/);
+                    menuViewUndo.setDisabled(!me.api.asc_getCanUndo());
                     menuViewCopySeparator.setVisible(!value.isChart && me.api.can_AddQuotedComment() !== false && me.mode.canCoAuthoring && me.mode.canComments);
                     menuViewAddComment.setVisible(!value.isChart && me.api.can_AddQuotedComment() !== false && me.mode.canCoAuthoring && me.mode.canComments);
                     menuViewAddComment.setDisabled(value.locked);