improved history for cars

pom.xml

@@ -4,7 +4,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>de.srsoftware</groupId>
 	<artifactId>web4rail</artifactId>
-	<version>1.4.26</version>
+	<version>1.4.27</version>
 	<name>Web4Rail</name>
 	<packaging>jar</packaging>
 	<description>Java Model Railway Control</description>

resources/css/style.css

@@ -435,3 +435,7 @@ svg.Block text{
 .Switch.on rect.enabled{
 	fill: forestgreen;	
 }
+
+#history table td:nth-child(2) {
+    padding-left: 30px;
+}

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

@@ -531,7 +531,7 @@ public abstract class BaseClass implements Constants{
 		new Button(t("Apply"),customForm).addTo(customForm).addTo(customFields);
 		customFields.addTo(win);		
 		
-		Fieldset history = new Fieldset(t("History"));
+		Fieldset history = new Fieldset(t("History")).id("history");
 		
 		Form form = new Form("add-history-entry");
 		new Input(REALM, REALM_HISTORY).hideIn(form);
@@ -542,8 +542,11 @@ public abstract class BaseClass implements Constants{
 		form.addTo(history);
 		
 		table = new Table();
-		table.addHead(t("Date/Time"),t("Event"));
+		table.addHead(t("Date/Time"),t("Event"),t("Actions"));
-		for (LogEntry entry : History.getFor(this)) table.addRow(new SimpleDateFormat("YYYY-dd-MM HH:mm").format(entry.date()),entry.getText());
+		for (LogEntry entry : History.getFor(this)) table.addRow(
+			new SimpleDateFormat("YYYY-dd-MM HH:mm").format(entry.date()),
+			entry.getText(),
+			button(t("delete"),Map.of(REALM,REALM_HISTORY,ACTION,ACTION_DROP,TIME,""+entry.getTime())));
 		table.addTo(history).addTo(win);
 		
 		return win;

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

@@ -53,14 +53,14 @@ public interface Constants {
 	public static final String REALM_PLAN      = "plan";
 	public static final String REALM_TRAIN     = "train";
 	
-	public static final String  ASSIGN = "assign";
+	public static final String  ASSIGN              = "assign";
 	public static final String  BLOCK               = "block";
 	public static final String  COL                 = ": ";
 	public static final String  CONTACT             = "contact";
 	public static final String  CONTEXT             = "context";
 	public static final String  DEFAULT_SPEED_UNIT  = "km/h";
 	public static final String  DEFAULT_LENGTH_UNIT = "mm";
-	public static final String DESTINATION          = "destination";
+	public static final String  DESTINATION          = "destination";
 	public static final String  DISABLED            = "disabled";
 	public static final String  DIRECTION           = "direction";
 	public static final String  GITHUB_URL          = "https://github.com/srsoftware-de/Web4Rail";
@@ -76,6 +76,7 @@ public interface Constants {
 	public static final String  RESERVED            = "reserved";
 	public static final String  ROUTE               = "route";
 	public static final String  STATE               = "state";
+	public static final String  TIME                = "time";
 	public static final String  TURNOUT             = "turnout";
 	public static final String  TYPE                = "type";
 	public static final Charset UTF8                = StandardCharsets.UTF_8;

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

@@ -37,6 +37,11 @@ public class History {
 		public String getText() {
 			return text;
 		}
+		
+		@Override
+		public String toString() {
+			return date()+": "+text;
+		}
 	};
 	
 	public static LogEntry assign(LogEntry logEntry, BaseClass object) {
@@ -47,21 +52,39 @@ public class History {
 		return logEntry;
 	}
 	
+	private static void dropEntry(BaseClass object,long time) {
+		Vector<LogEntry> list = log.get(object.id());
+		if (list == null) return;
+		for (int i=list.size(); i>0; i--) {
+			LogEntry entry = list.get(i-1);
+			if (entry.getTime() == time) list.remove(i-1);
+		}
+	}
+	
 	public static Vector<LogEntry> getFor(BaseClass object){
 		Vector<LogEntry> list = log.get(object.id());
 		return list != null ? list : new Vector<>();
 	}
 	
 	public static Object action(HashMap<String, String> params) {
-		
+		BaseClass object = BaseClass.get(Id.from(params));
 		switch (params.get(Constants.ACTION)) {
-			case Constants.ACTION_ADD:
+			case Constants.ACTION_ADD:				
-				BaseClass object = BaseClass.get(Id.from(params));
 				return object != null ? object.addLogEntry(params.get(Constants.NOTES)) : BaseClass.t("Unknown object!");
-
+			case Constants.ACTION_DROP:
+				if (BaseClass.isNull(object)) return BaseClass.t("Trying to delete log entry without specifing object!");
+				String err = null;
+				try {
+					long time = Long.parseLong(params.get(Constants.TIME));
+					dropEntry(object,time);
+				} catch (NumberFormatException e) {
+					err = BaseClass.t("Was not able to delete history entry!");
+				}
+				return object.properties(err);
 		}
 		
-		return BaseClass.t("Unknown action: {}",params.get(Constants.ACTION));
+		String message = BaseClass.t("Unknown action: {}",params.get(Constants.ACTION));
+		return (BaseClass.isNull(object)) ? message : object.properties(message);
 	}
 
 	public static void save(String filename) {

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

@@ -104,6 +104,11 @@ public class Car extends BaseClass implements Comparable<Car>{
 		return t("Unknown action: {}",params.get(ACTION));
 	}
 	
+	@Override
+	public Window addLogEntry(String text) {
+		return super.addLogEntry(distance(distanceCounter)+": "+text);
+	}
+	
 	public Object addTask(MaintnanceTask newTask) {
 		if (isSet(newTask))	{
 			tasks.add(newTask);