implemented new function, that switches decoder functions

src/main/java/de/srsoftware/web4rail/actions/Action.java

@@ -62,6 +62,7 @@ public abstract class Action extends BaseClass {
 			ShowText.class,
 			StopAllTrains.class,
 			StartStopAuto.class,
+			SwitchFunction.class,
 			TriggerContact.class,
 			TurnTrain.class
 		);

src/main/java/de/srsoftware/web4rail/actions/SwitchFunction.java

@@ -0,0 +1,111 @@
+package de.srsoftware.web4rail.actions;
+
+import java.util.HashMap;
+import java.util.List;
+
+import org.json.JSONObject;
+
+import de.srsoftware.tools.Tag;
+import de.srsoftware.web4rail.BaseClass;
+import de.srsoftware.web4rail.Window;
+import de.srsoftware.web4rail.tags.Fieldset;
+import de.srsoftware.web4rail.tags.Radio;
+import de.srsoftware.web4rail.tags.Select;
+
+public class SwitchFunction extends Action {
+
+	private static final String FUNCTION = "function";
+	private static final String EFFECT = "effect";
+	private static final int TOGGLE = -1;
+	private static final int ON = 1;
+	private static final int OFF = 0;
+	
+	private int function = 1,effect=-1;
+	
+	public SwitchFunction(BaseClass parent) {
+		super(parent);
+	}
+
+	@Override
+	public boolean fire(Context context) {
+		if (isNull(context) || isNull(context.train())) return false;
+		switch (effect) {
+			case TOGGLE:
+				context.train().toggleFunction(function);
+				return true;
+			case ON:
+				context.train().setFunction(function, true);
+				return true;
+			case OFF:
+				context.train().setFunction(function, false);
+				return true;
+		}
+		
+		return false;
+	}
+	
+	@Override
+	public JSONObject json() {
+		JSONObject json = super.json();
+		json.put(EFFECT, effect);
+		json.put(FUNCTION, function);
+		return json;
+	}
+	
+	@Override
+	public Action load(JSONObject json) {
+		super.load(json);
+		if (json.has(EFFECT)) effect = json.getInt(EFFECT);
+		if (json.has(FUNCTION)) function = json.getInt(FUNCTION);
+		return this;
+	}
+	
+	@Override
+	protected Window properties(List<Fieldset> preForm, FormInput formInputs, List<Fieldset> postForm) {
+		
+		Select selector = new Select(FUNCTION);
+		for (int i=1; i<5;i++) {
+			Tag option = selector.addOption(i,t("F"+i));
+			if (function == i) option.attr("selected", "selected");
+		}
+		formInputs.add(t("Function"), selector);
+		
+		Tag radioGroup = new Tag("span");
+		new Radio(EFFECT, TOGGLE, t("Toggle"), effect == TOGGLE).addTo(radioGroup);
+		new Radio(EFFECT, ON, t("On"), effect == ON).addTo(radioGroup);
+		new Radio(EFFECT, OFF, t("Off"), effect == OFF).addTo(radioGroup);
+		formInputs.add(t("Effect"),radioGroup);
+		
+		return super.properties(preForm, formInputs, postForm);
+	}
+	
+	@Override
+	public String toString() {
+		switch (effect) {
+			case TOGGLE:				
+				return t("toggle {}","F"+function);
+			case ON:
+				return t("enable {}","F"+function);
+			case OFF:
+				return t("disable {}","F"+function);
+		}
+		return null;
+	}
+	
+	@Override
+	protected Object update(HashMap<String, String> params) {
+		String fn = params.get(FUNCTION);
+		if (isSet(fn)) {
+			function = Integer.parseInt(fn);
+			if (function < 1 || function > 4) function = 1;
+		}
+		String effect = params.get(EFFECT);
+		if (isSet(effect)) switch (effect) {
+		case "1":
+		case "0":
+		case "-1":
+			this.effect = Integer.parseInt(effect);
+		}
+		return super.update(params);
+	}
+}