implemented saving of function settings for locomotives

src/main/java/de/srsoftware/web4rail/devices/Function.java

@@ -0,0 +1,92 @@
+package de.srsoftware.web4rail.devices;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map.Entry;
+
+import org.json.JSONArray;
+import org.json.JSONObject;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import de.srsoftware.web4rail.BaseClass;
+import de.srsoftware.web4rail.Constants;
+import de.srsoftware.web4rail.Params;
+
+public class Function implements Constants{
+	protected static final Logger LOG = LoggerFactory.getLogger(Function.class);
+	
+	public static final String DIRECTIONAL = "directional";
+	public static final String FORWARD = "forward";
+	public static final String REVERSE = "reverse";
+
+	
+	private boolean directional;
+	private boolean reverse;
+	private boolean forward;
+	private String type;
+
+	public Function(String type, Params dirs) {
+		this.type = type;
+		for (Entry<String, Object> entry : dirs.entrySet()) setDirection(entry.getKey(), "on".equals(entry.getValue()));
+	}
+
+	public Function(List<Object> list) {
+		for (Object item : list) setDirection(item.toString(), true);
+	}
+	
+	private void setDirection(String key,boolean value) {
+		switch (key) {
+			case DIRECTIONAL:
+				directional = value;
+				break;
+			case FORWARD:
+				forward = value;
+				break;
+			case REVERSE:
+				reverse = value;
+				break;
+			default:
+				LOG.debug("unknwon direction {}",key);
+		}
+	}
+
+	public boolean isDirectional() {
+		return directional;
+	}
+
+	public boolean isForward() {
+		return forward;
+	}
+
+	public boolean isReverse() {
+		return reverse;
+	}
+	
+	public JSONArray json() {
+		JSONArray json = new JSONArray();
+		if (directional) json.put(DIRECTIONAL);
+		if (forward) json.put(FORWARD);
+		if (reverse) json.put(REVERSE);
+		return json;
+	}
+	
+	@Override
+	public String toString() {
+		return type+"("+(forward?BaseClass.t("forward"):"")+(reverse?" "+BaseClass.t("reverse"):"")+(directional?" "+BaseClass.t("directional"):"").trim()+")";
+	}
+	
+
+	public static JSONObject json(HashMap<String, HashMap<Integer, Function>> functions) {
+		JSONObject json = new JSONObject();
+		for (Entry<String, HashMap<Integer, Function>> entry : functions.entrySet()) {
+			HashMap<Integer, Function> map = entry.getValue();
+			if (map.isEmpty()) continue;
+			String type = entry.getKey();
+			JSONObject list = new JSONObject();
+			for (Integer idx : map.keySet()) list.put(idx.toString(), map.get(idx).json());
+			json.put(type, list);
+		}
+		return json;
+	}
+}