added push-pull train condition

src/main/java/de/srsoftware/web4rail/conditions/Condition.java

@@ -92,7 +92,11 @@ public abstract class Condition implements Constants {
 	}
 	
 	private static List<Class<? extends Condition>> list() {
-		return List.of(TrainHasTag.class,TrainSelect.class,TrainLength.class);
+		return List.of(
+				PushPullTrain.class,
+				TrainHasTag.class,
+				TrainSelect.class,
+				TrainLength.class);
 	}
 	
 	public Tag propForm(HashMap<String, String> params) {
@@ -122,7 +126,7 @@ public abstract class Condition implements Constants {
 		}
 		
 		for (Entry<String, String> entry : names.entrySet()) select.addOption(entry.getValue(), entry.getKey());
-		return select.addTo(new Label(t("Action type:")+NBSP));
+		return select.addTo(new Label(t("Condition type:")+NBSP));
 	}
 	
 	public static String t(String text, Object...fills) {

src/main/java/de/srsoftware/web4rail/conditions/PushPullTrain.java

@@ -0,0 +1,16 @@
+package de.srsoftware.web4rail.conditions;
+
+import de.srsoftware.web4rail.actions.Action.Context;
+
+public class PushPullTrain extends Condition {
+	
+	@Override
+	public boolean fulfilledBy(Context context) {
+		return context.train.pushPull != inverted;
+	}
+
+	@Override
+	public String toString() {
+		return t(inverted ? "train is not a push-pull train":"train is a push-pull train") ;
+	}
+}

src/main/java/de/srsoftware/web4rail/moving/Train.java

@@ -57,7 +57,7 @@ public class Train implements Comparable<Train>,Constants {
 	private Direction direction;
 	
 	private static final String PUSH_PULL = "pushPull";
-	private boolean pushPull = false;
+	public boolean pushPull = false;
 	
 	private static final String CARS = "cars";
 	private Vector<Car> cars = new Vector<Car>();