shows node count in status line

src/main/java/de/neemann/digital/core/Model.java

@@ -466,6 +466,13 @@ public class Model {
         fireEvent(ModelEvent.MANUALCHANGE);
     }
 
+    /**
+     * @return the number of nodes
+     */
+    public int size() {
+        return nodes.size();
+    }
+
     /**
      * A simple storage bean for signals
      */

src/main/java/de/neemann/digital/gui/Main.java

@@ -526,6 +526,8 @@ public class Main extends JFrame implements ClosingWindowListener.ConfirmSave, E
 
             model = modelDescription.createModel(true);
 
+            statusLabel.setText(Lang.get("msg_N_nodes", model.size()));
+
             boolean runClock = false;
             if (globalRunClock)
                 for (Clock c : model.getClocks())
@@ -625,6 +627,7 @@ public class Main extends JFrame implements ClosingWindowListener.ConfirmSave, E
             circuitComponent.setCircuit(circ);
             elementState.activate();
             setFilename(filename, toPrefs);
+            statusLabel.setText(" ");
         } catch (Exception e) {
             circuitComponent.setCircuit(new Circuit());
             new ErrorMessage(Lang.get("msg_errorReadingFile")).addCause(e).show(this);

src/main/resources/lang/lang_de.properties

@@ -192,6 +192,7 @@ msg_clockError=Fehler bei der Berechnung einer Takt\u00E4nderung
 msg_frequency_N=Die maximale Frequenz ber\u00E4gt {0}Hz.
 msg_annalyseErr=Fehler bei der Analyse der Schaltung
 msg_errorDuringCalculation=Fehler w\u00E4hrend der Vereinfachung.
+msg_N_nodes={0} aktive Elemente
 
 
 stat_clocks={0} Halbzyklen

src/main/resources/lang/lang_en.properties

@@ -173,6 +173,7 @@ msg_errorReadingListing_N0=Error reading the listing {0}
 msg_clockError=Error during a clock state change
 msg_frequency_N=The maximum frequency is {0}Hz
 msg_errorDuringCalculation=Error during simplification
+msg_N_nodes={0} nodes
 
 stat_clocks={0} half cycles