Datasources changes tracking has been added

limereport/lrreportengine.cpp

@@ -513,7 +513,7 @@ bool ReportEnginePrivate::slotLoadFromFile(const QString &fileName)
             }
 
             dataManager()->connectAutoConnections();
-
+            dataManager()->dropChanges();
             if ( hasActivePreview() )
             {
                currentPreview->reloadPreview();
@@ -666,6 +666,7 @@ bool ReportEnginePrivate::saveToFile(const QString &fileName)
             page->setToSaved();
         }
     }
+    m_datasources->dropChanges();
     return saved;
 }
 
@@ -680,6 +681,7 @@ QByteArray ReportEnginePrivate::saveToByteArray()
             page->setToSaved();
         }
     }
+    m_datasources->dropChanges();
     return result;
 }
 
@@ -693,6 +695,7 @@ QString ReportEnginePrivate::saveToString(){
             page->setToSaved();
         }
     }
+    m_datasources->dropChanges();
     return result;
 }
 
@@ -701,6 +704,9 @@ bool ReportEnginePrivate::isNeedToSave()
     foreach(PageDesignIntf* page, m_pages){
         if (page->isHasChanges()) return true;
     }
+    if (dataManager()->isHasChanges()){
+        return true;
+    }
     return false;
 }