working on conditional actions

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

@@ -0,0 +1,69 @@
+package de.srsoftware.web4rail.conditions;
+
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.json.JSONObject;
+
+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.Window;
+import de.srsoftware.web4rail.actions.Action.Context;
+
+public abstract class Condition implements Constants {
+
+	private static HashMap<Integer, Condition> conditions = new HashMap<Integer, Condition>();
+	
+	public abstract boolean fulfilledBy(Context context);
+	protected int id;
+	
+	public static Object action(HashMap<String, String> params) {
+		if (!params.containsKey(ID)) return t("No id passed to Condition.action!");
+		int cid = Integer.parseInt(params.get(ID));
+		Condition condition = conditions.get(cid);
+		if (condition == null) return t("No condition with id {}!",cid);
+		
+		String action = params.get(ACTION);
+		if (action == null) return t("No action passed to Condition.action!");
+		
+		switch (action) {
+			case ACTION_PROPS:
+				return condition.properties();
+			case ACTION_UPDATE:
+				return condition.update(params);
+		}
+		return t("Unknown action: {}",action);
+	}
+
+	protected abstract Window properties();
+
+
+	public Condition() {
+		this(new Date().hashCode());
+	}
+	
+	public Condition(int id) {
+		this.id = id;
+		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());
+	}
+
+	
+	@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

@@ -0,0 +1,52 @@
+package de.srsoftware.web4rail.conditions;
+
+import java.util.HashMap;
+
+import de.srsoftware.web4rail.Window;
+import de.srsoftware.web4rail.actions.Action.Context;
+import de.srsoftware.web4rail.moving.Train;
+import de.srsoftware.web4rail.tags.Button;
+import de.srsoftware.web4rail.tags.Form;
+import de.srsoftware.web4rail.tags.Input;
+import de.srsoftware.web4rail.tags.Label;
+
+public class TrainSelect extends Condition {
+	
+	private static final Object TRAIN = Train.class.getSimpleName();
+	private Train train;
+
+	@Override
+	public boolean fulfilledBy(Context context) {
+		// TODO Auto-generated method stub
+		return false;
+	}
+	
+	@Override
+	protected Window properties() {
+		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);
+		Train.selector(train, null).addTo(new Label(t("Select train:")+NBSP)).addTo(form);
+		new Button(t("Save")).addTo(form).addTo(win);
+		return win;
+	}
+	
+	@Override
+	public String toString() {
+		if (train == null) return super.toString();
+		return t("Train = {}",train);
+	}
+
+	@Override
+	protected Object update(HashMap<String, String> params) {
+		if (!params.containsKey(TRAIN)) return t("No train id passed to TrainSelect.update()!");
+		int tid = Integer.parseInt(params.get(TRAIN));
+		Train train = Train.get(tid);
+		if (train == null) return t("No train with id {} found!",tid);
+		this.train = train;
+		return t("Updated condition");
+	}
+}