refactored condition management

pom.xml

@@ -4,7 +4,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>de.srsoftware</groupId>
 	<artifactId>web4rail</artifactId>
-	<version>0.7.10</version>
+	<version>0.7.11</version>
 	<name>Web4Rail</name>
 	<packaging>jar</packaging>
 	<description>Java Model Railway Control</description>

src/main/java/de/srsoftware/web4rail/Application.java

@@ -13,6 +13,7 @@ import java.net.InetSocketAddress;
 import java.net.URI;
 import java.net.URLDecoder;
 import java.nio.file.Files;
+import java.util.Date;
 import java.util.HashMap;
 import java.util.concurrent.CompletableFuture;
 
@@ -54,6 +55,15 @@ public class Application implements Constants{
         Desktop.getDesktop().browse(URI.create("http://"+InetAddress.getLocalHost().getHostName()+":"+config.getInt(PORT)+"/plan"));
 	}
 	
+	public static int createId() {
+		try {
+			Thread.sleep(1);
+		} catch (InterruptedException e) {
+			e.printStackTrace();
+		}
+		return new Date().hashCode();
+	}
+	
 	private static Object handle(HashMap<String, String> params) throws IOException, ClassNotFoundException, InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, NoSuchMethodException, SecurityException {
 		
 		String realm = params.get(REALM);
@@ -64,11 +74,11 @@ public class Application implements Constants{
 
 		switch (realm) {
 			case REALM_ACTIONS:
-				return ActionList.process(params);
+				return ActionList.process(params,plan);
 			case REALM_CAR:
 				return Car.action(params);
 			case REALM_CONDITION:
-				return Condition.action(params);
+				return Condition.action(params,plan);
 			case REALM_CU:
 				return plan.controlUnit().process(params);
 			case REALM_LOCO:

src/main/java/de/srsoftware/web4rail/Constants.java

@@ -45,4 +45,5 @@ public interface Constants {
 	public static final String CONTACT = "contact";
 	public static final String TYPE = "type";
 	public static final String NBSP = " ";
+	public static final String CONTEXT = "context";
 }

src/main/java/de/srsoftware/web4rail/Plan.java

@@ -448,6 +448,17 @@ public class Plan implements Constants{
 		tile.position(x, y).plan(this);
 		tiles.put(tile.id(),tile);
 	}
+
+	public Window showContext(HashMap<String, String> params) {
+		String[] parts = params.get(CONTEXT).split(":");
+		String realm = parts[0];
+		String id = parts.length>1 ? parts[1] : null;
+		switch (realm) {
+			case REALM_ROUTE:
+				return route(Integer.parseInt(id)).properties();
+		}
+		return null;
+	}
 	
 	public synchronized void stream(String data) {
 		data = data.replaceAll("\n", "").replaceAll("\r", "");

src/main/java/de/srsoftware/web4rail/Route.java

@@ -125,7 +125,7 @@ public class Route implements Constants{
 					actions = new ActionList();
 					triggers.put(c.trigger(), actions);
 				}
-				actions.addTo(link);
+				actions.addTo(link,REALM_ROUTE+":"+id());
 			}
 			list.addTo(win);
 		}

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

@@ -2,14 +2,15 @@ package de.srsoftware.web4rail.actions;
 
 import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
-import java.util.Date;
 import java.util.HashMap;
+import java.util.Map;
 
 import org.json.JSONObject;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import de.keawe.tools.translations.Translation;
+import de.srsoftware.tools.Tag;
 import de.srsoftware.web4rail.Application;
 import de.srsoftware.web4rail.Constants;
 import de.srsoftware.web4rail.Plan;
@@ -20,7 +21,7 @@ import de.srsoftware.web4rail.tiles.Contact;
 
 public abstract class Action implements Constants {
 	public static final Logger LOG = LoggerFactory.getLogger(Action.class);
-	private int id;
+	protected int id;
 	
 	public static class Context {
 		public Plan plan = null;
@@ -37,7 +38,7 @@ public abstract class Action implements Constants {
 	}
 	
 	public Action() {
-		id = new Date().hashCode();
+		id = Application.createId();
 	}
 
 	public abstract boolean fire(Context context) throws IOException;
@@ -46,18 +47,18 @@ public abstract class Action implements Constants {
 		return id;
 	}
 
-
 	public JSONObject json() {
 		JSONObject json = new JSONObject();
 		json.put(TYPE, getClass().getSimpleName());
 		return json;
 	}
 	
-	@Override
+	protected Tag link(int actionId, String context) {
-	public String toString() {
+		Map<String, String> props = Map.of(REALM,REALM_ACTIONS,ID,actionId+"/"+id,ACTION,ACTION_PROPS,CONTEXT,context);
-		return getClass().getSimpleName();
+		String action = "request("+(new JSONObject(props).toString().replace("\"", "'"))+")";
+		return new Tag("span").content(toString()).attr("onclick", action);
 	}
-
+	
 	public static Action load(JSONObject json) throws InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, NoSuchMethodException, SecurityException, ClassNotFoundException {
 		String clazz = json.getString(TYPE);
 		switch (clazz) {
@@ -75,11 +76,20 @@ public abstract class Action implements Constants {
 		return null;
 	}
 	
-	public static Window propForm(HashMap<String, String> params) {
+	public Window properties(HashMap<String, String> params) {
-		return new Window("action-props", "Action properties");
+		return new Window("action-props-"+id, t("Properties of {}",this.getClass().getSimpleName()));
 	}
 	
 	protected static String t(String tex,Object...fills) {
 		return Translation.get(Application.class, tex, fills);
 	}
+	
+	@Override
+	public String toString() {
+		return getClass().getSimpleName();
+	}
+
+	protected Object update(HashMap<String, String> params) {
+		return t("Nothing changed");
+	}
 }

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

@@ -1,7 +1,6 @@
 package de.srsoftware.web4rail.actions;
 
 import java.io.IOException;
-import java.util.Date;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -14,6 +13,7 @@ import de.keawe.tools.translations.Translation;
 import de.srsoftware.tools.Tag;
 import de.srsoftware.web4rail.Application;
 import de.srsoftware.web4rail.Constants;
+import de.srsoftware.web4rail.Plan;
 import de.srsoftware.web4rail.Window;
 import de.srsoftware.web4rail.actions.Action.Context;
 import de.srsoftware.web4rail.tags.Button;
@@ -30,48 +30,78 @@ public class ActionList extends Vector<Action> implements Constants{
 	private static final HashMap<Integer, ActionList> actionLists = new HashMap<Integer, ActionList>();
 	
 	public ActionList() {
-		id = new Date().hashCode();
+		id = Application.createId();
 		actionLists.put(id,this);
 	}
-
+	
-	public void fire(Context context) {
+	private static Integer actionId(HashMap<String, String> params) {
-		LOG.debug("Firing {}",this);
+		if (!params.containsKey(ID)) return null;
-
+		String[] parts = params.get(ID).split("/");
-		for (Action action : this) {
+		if (parts.length<2) return null;
-			try {
+		return Integer.parseInt(parts[1]);
-				action.fire(context);
-			} catch (IOException e) {
-				LOG.warn("Action did not fire properly: {}",action,e);
-			}
-		}
 	}
 
-	public boolean drop(int actionId) {
+	private static Integer actionListId(HashMap<String, String> params) {
-		for (Action action : this) {
+		if (!params.containsKey(ID)) return null;
-			if (action.id() == actionId) {
+		String[] parts = params.get(ID).split("/");
-				this.remove(action);
+		return Integer.parseInt(parts[0]);
-				return true;				
-			}
-		}
-		return false;
 	}
-
+	
-	public boolean moveUp(int actionId) {
+	private Object actionTypeForm(Window win, String context) {
-		for (int i=1; i<size(); i++) {
+		String formId ="add-action-to-"+id;
-			if (actionId == elementAt(i).id()) {
+		Tag typeForm = new Form(formId);
-				Action action = remove(i);
+		new Input(REALM, REALM_ACTIONS).hideIn(typeForm);
-				insertElementAt(action, i-1);
+		new Input(ID,id).hideIn(typeForm);
-				return true;
+		new Input(ACTION,ACTION_ADD).hideIn(typeForm);
-			}
+		new Input(CONTEXT,context).hideIn(typeForm);
+		Select select = new Select(TYPE);
+		List<Class<? extends Action>> classes = List.of(
+				SpeedReduction.class,
+				SetSignalsToStop.class,
+				FinishRoute.class,
+				TurnTrain.class,
+				ConditionalAction.class);
+		for (Class<? extends Action> clazz : classes) select.addOption(clazz.getSimpleName());
+		select.addTo(new Label("Action type:")).addTo(typeForm);
+		return new Button(t("Create action"),"return submitForm('"+formId+"');").addTo(typeForm).addTo(win);
+	}
+	
+	private Object addActionForm(HashMap<String, String> params, Plan plan) {
+		Window win = new Window("add-action-form", t("Add action to action list"));		
+		String type = params.get(TYPE);
+		String context = params.get(CONTEXT);
+		if (type == null) return actionTypeForm(win,context);
+		
+		switch (type) {
+			case "ConditionalAction":
+				add(new ConditionalAction());
+				break;
+			case "FinishRoute":
+				add(new FinishRoute());
+				break;
+			case "SetSignalsToStop":
+				add(new SetSignalsToStop());
+				break;
+			case "SpeedReduction":
+				add(new SpeedReduction(0));
+				break;
+			case "TurnTrain":
+				add(new TurnTrain());
+				break;				
+			default:
+				actionTypeForm(win,context);
+				new Tag("span").content(t("Unknown action type: {}",type)).addTo(win);
+				return win;			
 		}
-		return false;
+		return plan.showContext(params);
 	}
-
+	
-	public void addTo(Tag link) {
+	public void addTo(Tag link, String context) {
 		Map<String, Object> props = new HashMap<String, Object>(Map.of(
 				REALM,REALM_ACTIONS,
 				ID,id,
-				ACTION,ACTION_ADD));
+				ACTION,ACTION_ADD,
+				CONTEXT,context));
 		new Button(t("add action"),props).addTo(link);
 
 		props.put(ACTION,ACTION_PROPS);
@@ -80,7 +110,7 @@ public class ActionList extends Vector<Action> implements Constants{
 			boolean first = true;
 			for (Action action : this) {
 				props.put(ID, id+"/"+action.id());
-				Tag act = new Tag("li").content(action.toString());
+				Tag act = action.link(id,context).addTo(new Tag("li"));
 				if (!first) {
 					props.put(ACTION, ACTION_MOVE);
 					new Button("↑",props).addTo(act);
@@ -94,79 +124,92 @@ public class ActionList extends Vector<Action> implements Constants{
 		}		
 	}
 	
-	private static String t(String text,Object...fills) {
+	public boolean drop(int actionId) {
-		return Translation.get(Application.class, text, fills);
+		for (Action action : this) {
+			if (action.id() == actionId) {
+				this.remove(action);
+				return true;				
+			}
+		}
+		return false;
+	}
+	
+	public void fire(Context context) {
+		LOG.debug("Firing {}",this);
+
+		for (Action action : this) {
+			try {
+				action.fire(context);
+			} catch (IOException e) {
+				LOG.warn("Action did not fire properly: {}",action,e);
+			}
+		}
+	}
+	
+	private Action getAction(int actionId) {
+		for (Action action : this) {
+			if (action.id == actionId) return action;
+		}
+		return null;
 	}
 
-	public static Object process(HashMap<String, String> params) {
+	public int id() {
-		if (!params.containsKey(ID)) return t("No action list id passed to ActionList.process()!");
+		return id;
-		String[] parts = params.get(ID).split("/");
+	}
-		int listId = Integer.parseInt(parts[0]);
+	
-		int actionId = parts.length>1 ? Integer.parseInt(parts[1]) : 0;
+	public boolean moveUp(int actionId) {
+		for (int i=1; i<size(); i++) {
+			if (actionId == elementAt(i).id()) {
+				Action action = remove(i);
+				insertElementAt(action, i-1);
+				return true;
+			}
+		}
+		return false;
+	}
+	
+	public static Object process(HashMap<String, String> params, Plan plan) {
+		Integer listId = actionListId(params);
+		if (listId == null) return t("No action list id passed to ActionList.process()!");
 		ActionList actionList = actionLists.get(listId);
 		if (actionList == null) return t("No action list with id {} found!",listId);
+
+		Integer actionId = actionId(params);
 		String action = params.get(ACTION);
 		if (action == null) return t("No action passed to ActionList.process()!");
+		
 		switch (action) {
 			case ACTION_ADD:
-				return actionList.addActionForm(params);
+				return actionList.addActionForm(params,plan);
 			case ACTION_DROP:
-				return actionList.drop(actionId) ? t("Action removed") : t("No action with id {} found!",actionId);
+				return actionList.drop(actionId) ? plan.showContext(params) : t("No action with id {} found!",actionId);
 			case ACTION_MOVE:
-				return actionList.moveUp(actionId) ? t("Action moved") : t("No action with id {} found!",actionId);
+				return actionList.moveUp(actionId) ? plan.showContext(params) : t("No action with id {} found!",actionId);
+			case ACTION_PROPS:
+				return actionList.propsOf(params);
+			case ACTION_UPDATE:
+				return actionList.update(actionId,params,plan);
 		}
 		return t("Unknown action: {}",action);
 	}
-
+	
-	private Object addActionForm(HashMap<String, String> params) {
+	private Object propsOf(HashMap<String, String> params) {
-		Window win = new Window("add-action-form", t("Add action to action list"));		
+		int actionId = actionId(params); 
-		String formId ="add-action-to-"+id;
+		Action action = getAction(actionId);
-		Tag typeForm = new Form(formId);
+		if (action != null) return action.properties(params);
-		new Input(REALM, REALM_ACTIONS).hideIn(typeForm);
+		return t("No action with id {} found!",actionId);
-		new Input(ID,id).hideIn(typeForm);
-		new Input(ACTION,ACTION_ADD).hideIn(typeForm);
-		String type = params.get(TYPE);
-		if (type == null) return actionTypeForm(win);
-		
-		switch (type) {
-			case "FinishRoute":
-				add(new FinishRoute());
-				break;
-			case "SetSignalsToStop":
-				add(new SetSignalsToStop());
-				break;
-			case "SpeedReduction":
-				return SpeedReduction.propForm(this,params);
-			case "TurnTrain":
-				add(new TurnTrain());
-				break;
-			default:
-				actionTypeForm(win);
-				new Tag("span").content(t("Unknown action type: {}",type)).addTo(win);
-				return win;			
-		}
-		return t("Action added!");
 	}
-
+	
-	private Object actionTypeForm(Window win) {
+	private static String t(String text,Object...fills) {
-		String formId ="add-action-to-"+id;
+		return Translation.get(Application.class, text, fills);
-		Tag typeForm = new Form(formId);
-		new Input(REALM, REALM_ACTIONS).hideIn(typeForm);
-		new Input(ID,id).hideIn(typeForm);
-		new Input(ACTION,ACTION_ADD).hideIn(typeForm);
-		Select select = new Select(TYPE);
-		List<Class<? extends Action>> classes = List.of(
-				SpeedReduction.class,
-				SetSignalsToStop.class,
-				FinishRoute.class,
-				TurnTrain.class,
-				ConditionalAction.class);
-		for (Class<? extends Action> clazz : classes) select.addOption(clazz.getSimpleName());
-		select.addTo(new Label("Action type:")).addTo(typeForm);
-		return new Button(t("Create action"),"return submitForm('"+formId+"');").addTo(typeForm).addTo(win);
 	}
-
+	
-	public int id() {
+	private Object update(int actionId, HashMap<String, String> params, Plan plan) {
-		return id;
+		Action action = getAction(actionId);
+		if (action != null) {
+			plan.stream(action.update(params).toString());
+			return plan.showContext(params);
+		}
+		return t("No action with id {} found.",actionId);
 	}
 }

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

@@ -1,44 +1,47 @@
 package de.srsoftware.web4rail.actions;
 
-import static de.srsoftware.web4rail.Constants.TYPE;
-
 import java.io.IOException;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Vector;
 
 import de.srsoftware.tools.Tag;
-import de.srsoftware.web4rail.Route;
 import de.srsoftware.web4rail.Window;
 import de.srsoftware.web4rail.conditions.Condition;
 import de.srsoftware.web4rail.conditions.TrainSelect;
 import de.srsoftware.web4rail.tags.Button;
+import de.srsoftware.web4rail.tags.Fieldset;
 import de.srsoftware.web4rail.tags.Form;
 import de.srsoftware.web4rail.tags.Input;
 import de.srsoftware.web4rail.tags.Select;
-import de.srsoftware.web4rail.tiles.Contact;
 
 public class ConditionalAction extends Action {
 	
 	private Vector<Condition> conditions = new Vector<Condition>();
-	private Vector<Action> actions = new Vector<Action>();
+	private ActionList actions = new ActionList();
 
-	private ConditionalAction addCondition(Condition condition) {
+	private Tag conditionForm(HashMap<String, String> params) {
-		conditions.add(new TrainSelect());
+		Fieldset fieldset = new Fieldset("Conditions");
-		return this;
+
-	}
+		if (!conditions.isEmpty()) {
-	
+			Tag list = new Tag("ul");
-	private static void addToContact(Route route, Contact contact, String conditionType) {
+			for (Condition condition : conditions) condition.link("li",params.get(CONTEXT)).addTo(list);
-		Condition condition = null;
+			list.addTo(fieldset);
-		switch (conditionType) {
-			case "TrainSelect":
-				condition = new TrainSelect();
-				break;
-			default: return;
 		}
-		route.addAction(contact.trigger(), new ConditionalAction().addCondition(condition));
+		String formId = "action-prop-form-"+id;
+		Form form = new Form(formId);
+		new Input(REALM,REALM_ACTIONS).hideIn(form);
+		new Input(ID,params.get(ID)).hideIn(form);
+		new Input(ACTION,ACTION_UPDATE).hideIn(form);
+		new Input(CONTEXT,params.get(CONTEXT)).hideIn(form);
+
+		Select select = new Select(REALM_CONDITION);
+		List<Class<? extends Condition>> classes = List.of(TrainSelect.class);
+		for (Class<? extends Condition> clazz : classes) select.addOption(clazz.getSimpleName());
+		select.addTo(form);
+		return new Button(t("Add condition"),"return submitForm('"+formId+"');").addTo(form).addTo(fieldset);
 	}
-	
+		
 	@Override
 	public boolean fire(Context context) throws IOException {
 		for (Condition condition : conditions) {
@@ -55,39 +58,38 @@ public class ConditionalAction extends Action {
 		}
 		return true;
 	}
-	
+		
-	public static Window propForm(HashMap<String, String> params, Route route, Contact contact) {
+	@Override
-		String condition = params.get(REALM_CONDITION);
+	public Window properties(HashMap<String, String> params) {
-		if (condition != null) {
+		Window win = super.properties(params);
-			addToContact(route,contact,condition);
+		conditionForm(params).addTo(win);
-			return route.properties();		
-		}
-		Window win = Action.propForm(params);
-		String formId = "add-action-to-contact-"+contact.id();
-		Tag form = new Form(formId);
-		new Tag("div").content(t("Add Action {} to contact {} on route {}:",ConditionalAction.class.getSimpleName(),contact,route)).addTo(win);
-		new Input(REALM, REALM_ROUTE).hideIn(form);
-		new Input(ID,route.id()).hideIn(form);
-		new Input(ACTION,ACTION_ADD_ACTION).hideIn(form);
-		new Input(CONTACT,contact.id()).hideIn(form);
-		new Input(TYPE,ConditionalAction.class.getSimpleName()).hideIn(form);
-		Select select = new Select(REALM_CONDITION);
-		List<Class<? extends Condition>> conditionTypes = List.of(TrainSelect.class);
-		for (Class<? extends Condition> clazz : conditionTypes) select.addOption(clazz.getSimpleName());
-		select.addTo(form);
-		new Button(t("Create action"),"return submitForm('"+formId+"');").addTo(form).addTo(win);
 		return win;
 	}
-	
+
 	@Override
 	public String toString() {
 		if (conditions.isEmpty()) return t("Invalid condition");
 		StringBuffer sb = new StringBuffer();		
 		for (int i = 0; i<conditions.size(); i++) {
-			Condition condition = conditions.get(i);
+			if (i>0) sb.append(t(" or "));
-			Tag link = condition.link("span");
+			sb.append(conditions.get(i).toString());
-			sb.append(link);
 		}
 		return t("if ({}):",sb);
 	}
+
+	@Override
+	protected Object update(HashMap<String, String> params) {
+		String conditionClass = params.get(REALM_CONDITION);
+		if (conditionClass != null) {
+			switch (conditionClass) {
+			case "TrainSelect":
+				conditions.add(new TrainSelect());
+				break;
+
+			default:
+				return t("Unknown type of condition: {}",conditionClass);
+			}
+		}
+		return super.update(params);
+	}
 }

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

@@ -37,7 +37,30 @@ public class SpeedReduction extends Action{
 		return json;
 	}
 	
-	public static Object propForm(ActionList actionList, HashMap<String, String> params) {
+	@Override
+	public Window properties(HashMap<String, String> params) {
+		Window win = super.properties(params);
+		String formId = "action-prop-form-"+id;
+		Form form = new Form(formId);
+		new Input(REALM,REALM_ACTIONS).hideIn(form);
+		new Input(ID,params.get(ID)).hideIn(form);
+		new Input(ACTION,ACTION_UPDATE).hideIn(form);
+		new Input(CONTEXT,params.get(CONTEXT)).hideIn(form);
+		Label label = new Label(t("Set speed to")+NBSP);
+		new Input(MAX_SPEED, maxSpeed).addTo(label).content(NBSP+t("km/h"));
+		label.addTo(form);
+		new Button(t("Save"),"return submitForm('"+formId+"');").addTo(form).addTo(win);		
+		return win;
+	}
+	
+	@Override
+	public String toString() {
+		return t("Reduce speed to {} km/h",maxSpeed);
+	}
+
+	@Override
+	protected Object update(HashMap<String, String> params) {
+		LOG.debug("update: {}",params);
 		String error = null;
 		String ms = params.get(MAX_SPEED);
 		if (ms == null) {
@@ -47,28 +70,14 @@ public class SpeedReduction extends Action{
 				int s = Integer.parseInt(ms);
 				if (s<0) error = t("Speed must not be less than zero!");
 				if (error == null) {
-					actionList.add(new SpeedReduction(s));
+					this.maxSpeed = s;
-					return t("Action added!");
+					return t("Action updated!");
 				}
 			} catch (NumberFormatException e) {
 				error = t("Not a valid number!");
 			}
 		}
-		Window win = Action.propForm(params);
+		Window win = properties(params);
-		String formId = "edit-speedreduction";
+		return new Tag("span").content(error).addTo(win);
-		Tag form = new Form(formId);
-		new Input(REALM, REALM_ACTIONS).hideIn(form);
-		new Input(ID,actionList.id()).hideIn(form);
-		new Input(ACTION,ACTION_ADD).hideIn(form);
-		new Input(TYPE,SpeedReduction.class.getSimpleName()).hideIn(form);
-		new Input(MAX_SPEED, ms).addTo(new Label("new speed")).addTo(form);
-		//if (error != null) new Tag("div").content(error).addTo(form); 
-		new Button(t("Create action"),"return submitForm('"+formId+"');").addTo(form).addTo(win);
-		return win;
-	}
-	
-	@Override
-	public String toString() {
-		return t("Reduce speed to {} km/h",maxSpeed);
 	}
 }

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

@@ -1,6 +1,5 @@
 package de.srsoftware.web4rail.conditions;
 
-import java.util.Date;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -10,6 +9,7 @@ import de.keawe.tools.translations.Translation;
 import de.srsoftware.tools.Tag;
 import de.srsoftware.web4rail.Application;
 import de.srsoftware.web4rail.Constants;
+import de.srsoftware.web4rail.Plan;
 import de.srsoftware.web4rail.Window;
 import de.srsoftware.web4rail.actions.Action.Context;
 
@@ -19,8 +19,17 @@ public abstract class Condition implements Constants {
 	
 	public abstract boolean fulfilledBy(Context context);
 	protected int id;
+
+	public Condition() {
+		this(Application.createId());
+	}
+	
+	public Condition(int id) {
+		this.id = id;
+		conditions.put(id, this);
+	}	
 	
-	public static Object action(HashMap<String, String> params) {
+	public static Object action(HashMap<String, String> params,Plan plan) {
 		if (!params.containsKey(ID)) return t("No id passed to Condition.action!");
 		int cid = Integer.parseInt(params.get(ID));
 		Condition condition = conditions.get(cid);
@@ -31,39 +40,29 @@ public abstract class Condition implements Constants {
 		
 		switch (action) {
 			case ACTION_PROPS:
-				return condition.properties();
+				return condition.properties(params);
 			case ACTION_UPDATE:
-				return condition.update(params);
+				condition.update(params);
+				return plan.showContext(params);
 		}
 		return t("Unknown action: {}",action);
 	}
-
-	protected abstract Window properties();
-
-
-	public Condition() {
-		this(new Date().hashCode());
-	}
 	
-	public Condition(int id) {
+	public Tag link(String tagClass,String context) {
-		this.id = id;
+		String json = new JSONObject(Map.of(REALM,REALM_CONDITION,ID,id,ACTION,ACTION_PROPS,CONTEXT,context)).toString().replace("\"", "'");
-		conditions.put(id, this);
-	}
-	
-	public Tag link(String tagClass) {
-		String json = new JSONObject(Map.of(REALM,REALM_CONDITION,ID,id,ACTION,ACTION_PROPS)).toString().replace("\"", "'");
 		return new Tag(tagClass).clazz("link").attr("onclick","request("+json+")").content(toString());
 	}
 
+	protected abstract Window properties(HashMap<String, String> params);
 	
+	public static String t(String text, Object...fills) {
+		return Translation.get(Application.class, text, fills);
+	}
+		
 	@Override
 	public String toString() {
 		return t("invalid condition");
 	}
-	
+
-	public static String t(String text, Object...fills) {
-		return Translation.get(Application.class, text, fills);
-	}
-	
 	protected abstract Object update(HashMap<String, String> params);
 }

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

@@ -22,13 +22,14 @@ public class TrainSelect extends Condition {
 	}
 	
 	@Override
-	protected Window properties() {
+	protected Window properties(HashMap<String, String> params) {
 		Window win = new Window("condition-props", t("Properties of {}",getClass().getSimpleName()));
 		String formId = "conditional-props-"+id;
 		Form form = new Form(formId);
 		new Input(REALM,REALM_CONDITION).hideIn(form);
 		new Input(ACTION,ACTION_UPDATE).hideIn(form);
 		new Input(ID,id).hideIn(form);
+		new Input(CONTEXT,params.get(CONTEXT)).hideIn(form);
 		Train.selector(train, null).addTo(new Label(t("Select train:")+NBSP)).addTo(form);
 		new Button(t("Save"),"return submitForm('"+formId+"');").addTo(form).addTo(win);
 		return win;

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

@@ -6,7 +6,6 @@ import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.util.Collection;
-import java.util.Date;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
@@ -99,7 +98,7 @@ public class Train implements Constants {
 	}
 	
 	public Train(Locomotive loco, Integer id) {
-		if (id == null) id = new Date().hashCode();
+		if (id == null) id = Application.createId();
 		this.id = id;
 		add(loco);
 		trains.put(id, this);