updateAllSources; second time i needed this tonight, so in it goes

svn path=/trunk/KDE/kdelibs/; revision=883535

dataengine.cpp

@@ -379,6 +379,11 @@ void DataEngine::timerEvent(QTimerEvent *event)
     }
 
     d->updateTimestamp.restart();
+    updateAllSources();
+}
+
+void DataEngine::updateAllSources()
+{
     QHashIterator<QString, Plasma::DataContainer*> it(d->sources);
     while (it.hasNext()) {
         it.next();

dataengine.h

@@ -439,6 +439,11 @@ class PLASMA_EXPORT DataEngine : public QObject
          **/
         void removeSource(const QString &source);
 
+        /**
+         * Immediately updates all existing sources when called
+         */
+        void updateAllSources();
+
     private:
         friend class DataEnginePrivate;
         friend class DataEngineScript;