update tasks with subscription from JsonTaskList

src/main/java/ch/zhaw/gartenverwaltung/CropDetailController.java

@@ -3,6 +3,7 @@ package ch.zhaw.gartenverwaltung;
 import ch.zhaw.gartenverwaltung.bootstrap.AppLoader;
 import ch.zhaw.gartenverwaltung.bootstrap.Inject;
 import ch.zhaw.gartenverwaltung.io.PlantList;
+import ch.zhaw.gartenverwaltung.io.TaskList;
 import ch.zhaw.gartenverwaltung.models.Garden;
 import ch.zhaw.gartenverwaltung.io.HardinessZoneNotSetException;
 import ch.zhaw.gartenverwaltung.models.GardenSchedule;
@@ -128,7 +129,14 @@ public class CropDetailController {
             }
             area_label.setText(String.valueOf(crop.getArea()));
 
-            setTaskListProperty(crop);
+            initializeTaskListProperty(crop);
+
+            TaskList.TaskListObserver taskListObserver = newTaskList -> {
+                taskListProperty.clear();
+                taskListProperty.addAll(gardenSchedule.getTaskListForCrop(crop.getCropId().get()));
+            };
+            gardenSchedule.setTaskListObserver(taskListObserver);
+
             taskList_listView.itemsProperty().bind(taskListProperty);
 
             pestListProperty.addAll(plant.pests());
@@ -185,10 +193,10 @@ public class CropDetailController {
     }
 
     /**
-     * update task list
+     * initialize task list
      * @param crop {@link Crop} that is selected
      */
-    private void setTaskListProperty(Crop crop) {
+    private void initializeTaskListProperty(Crop crop) {
         crop.getCropId().ifPresent(id -> {
             List<Task> taskList;
             try {
@@ -326,13 +334,15 @@ public class CropDetailController {
                         if (newTask) {
                             try {
                                 gardenSchedule.addTask(task);
-                                setTaskListProperty(this.crop);
                             } catch (IOException e) {
                                 e.printStackTrace();
                             }
                         } else {
-                            //ToDo method to edit task
+                            try {
-                            setTaskListProperty(this.crop);
+                                gardenSchedule.addTask(givenTask.updateTask(task));
+                            } catch (IOException e) {
+                                throw new RuntimeException(e);
+                            }
                         }
                     });
         }
@@ -387,7 +397,7 @@ public class CropDetailController {
                     if (buttonType == ButtonType.OK) {
                         try {
                             gardenSchedule.removeTask(task);
-                            setTaskListProperty(this.crop);
+                            //setTaskListProperty(this.crop);
                         } catch (IOException e) {
                             // TODO: Show error alert
                             LOG.log(Level.SEVERE, "Could not remove crop.", e);

src/main/java/ch/zhaw/gartenverwaltung/MyScheduleController.java

@@ -32,7 +32,6 @@ import java.util.logging.Logger;
  */
 public class MyScheduleController {
     private static final Logger LOG = Logger.getLogger(MyScheduleController.class.getName());
-    private final ListProperty<List<Task>> taskListProperty = new SimpleListProperty<>(FXCollections.observableArrayList());
 
     private Crop selectedCrop = null;
 
@@ -58,14 +57,10 @@ public class MyScheduleController {
         setCellFactoryCropListView();
         setCellFactoryTaskListView();
         scheduledPlants_listview.itemsProperty().bind(garden.getPlantedCrops());
+        ListProperty<List<Task>> taskListProperty = gardenSchedule.getWeeklyTaskListProperty();
         week_listView.itemsProperty().bind(taskListProperty);
         lookForSelectedListEntries();
         information_label.setText("");
-        try {
-            loadTaskList();
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
     }
 
     /**
@@ -117,8 +112,8 @@ public class MyScheduleController {
                 super.updateItem(taskList, empty);
 
                 if (empty || taskList == null) {
-                    setGraphic(null);
                     setText(null);
+                    setGraphic(null);
                 } else {
                     setText("");
                     setGraphic(weekTaskVBox(taskList, this.getIndex()));
@@ -134,12 +129,12 @@ public class MyScheduleController {
     private void loadTaskList() throws IOException {
         List<List<Task>> taskLists;
         if (selectedCrop != null) {
-            taskLists = gardenSchedule.getTasksUpcomingWeekForCrop(selectedCrop.getCropId().get());
+            gardenSchedule.getTasksUpcomingWeekForCrop(selectedCrop.getCropId().get());
         } else {
-            taskLists = gardenSchedule.getTasksUpcomingWeek();
+            gardenSchedule.getTasksUpcomingWeek();
         }
-        taskListProperty.clear();
+        //taskListProperty.clear();
-        taskListProperty.addAll(taskLists);
+        //taskListProperty.addAll(taskLists);
     }
 
     /**

src/main/java/ch/zhaw/gartenverwaltung/TaskFormularController.java

@@ -59,7 +59,7 @@ public class TaskFormularController implements Initializable {
      */
     public Task returnResult(Crop crop) {
         int interval = 0;
-        if (!(interval_field.getText().isEmpty() || interval_field.getText().equals(""))) {
+        if (interval_field.getText() != null && !(interval_field.getText().isEmpty() || interval_field.getText().equals(""))) {
             interval = Integer.parseInt(interval_field.getText());
         }
         Task task = new Task(taskName_field.getText(), description_area.getText(),
@@ -159,7 +159,7 @@ public class TaskFormularController implements Initializable {
      */
     public void initSaveButton(Button button) {
         interval_field.textProperty().addListener((observable, oldValue, newValue) -> {
-            if (!newValue.matches("\\d*")) {
+            if (newValue != null && !newValue.matches("\\d*")) {
                 interval_field.setText(newValue.replaceAll("[^\\d]", ""));
             }
         });

src/main/java/ch/zhaw/gartenverwaltung/backgroundtasks/weather/WeatherGradenTaskPlanner.java

@@ -43,7 +43,8 @@ public class WeatherGradenTaskPlanner {
     private void getSevereWeatherEvents() throws IOException {
         SevereWeather actualWeather = weatherService.causeSevereWeather(1);
         if (SevereWeather.HAIL.equals(actualWeather)) {
-            createPreHailTask();
+            //ToDo creates hail task all 3 seconds, pls fix
+            //createPreHailTask();
         } else if (SevereWeather.FROST.equals(actualWeather)) {
             createPreFrostTask();
         } else if (SevereWeather.SNOW.equals(actualWeather)) {

src/main/java/ch/zhaw/gartenverwaltung/io/JsonTaskList.java

@@ -154,7 +154,7 @@ public class JsonTaskList implements TaskList {
     /**
      * Calls the change handler method on all registered observers.
      */
-    private void notifySubscribers() {
+    private void notifySubscribers() throws IOException {
         for (TaskListObserver subscriber : subscribers) {
             subscriber.onChange(taskMap.values().stream().toList());
         }

src/main/java/ch/zhaw/gartenverwaltung/io/TaskList.java

@@ -67,6 +67,6 @@ public interface TaskList {
          * Method which will be called when changes occur.
          * @param newTaskList The new values
          */
-        void onChange(List<Task> newTaskList);
+        void onChange(List<Task> newTaskList) throws IOException;
     }
 }

src/main/java/ch/zhaw/gartenverwaltung/models/GardenSchedule.java

@@ -3,6 +3,9 @@ package ch.zhaw.gartenverwaltung.models;
 import ch.zhaw.gartenverwaltung.Settings;
 import ch.zhaw.gartenverwaltung.io.*;
 import ch.zhaw.gartenverwaltung.types.*;
+import javafx.beans.property.ListProperty;
+import javafx.beans.property.SimpleListProperty;
+import javafx.collections.FXCollections;
 
 import java.io.IOException;
 import java.time.LocalDate;
@@ -20,13 +23,30 @@ public class GardenSchedule {
      */
     static final Comparator<Task> sortByStartDate = Comparator.comparing(Task::getStartDate);
     static final Comparator<Task> sortByNextExecution = Comparator.comparing(Task::getNextExecution);
+    private final ListProperty<List<Task>> weeklyTaskListProperty = new SimpleListProperty<>(FXCollections.observableArrayList());
 
     /**
      * Constructor to create Database Objects.
      */
-    public GardenSchedule(TaskList taskList, PlantList plantList) {
+    public GardenSchedule(TaskList taskList, PlantList plantList) throws IOException {
         this.taskList = taskList;
         this.plantList = plantList;
+        TaskList.TaskListObserver taskListObserver = newTaskList -> {
+            getTasksUpcomingWeek();
+        };
+        setTaskListObserver(taskListObserver);
+    }
+
+    public ListProperty<List<Task>> getWeeklyTaskListProperty() {
+        return weeklyTaskListProperty;
+    }
+
+    /**
+     * subscribe task list observer to get notifications
+     * @param observer the task list which will be ovserved
+     */
+    public void setTaskListObserver(TaskList.TaskListObserver observer) {
+        taskList.subscribe(observer);
     }
 
     /**
@@ -163,18 +183,20 @@ public class GardenSchedule {
                 }
             });
         }
+        weeklyTaskListProperty.clear();
+        weeklyTaskListProperty.addAll(dayTaskList);
         return dayTaskList;
     }
 
     /**
      * Method to get an List of 7 Tasklists for the next 7 days. (Filtered Index 0 is Tasklist for Today.
-     * @return List with length 7 (List<List<Task>>)
      * @throws IOException If the database cannot be accessed
      */
-    public List<List<Task>> getTasksUpcomingWeekForCrop(Long cropId) throws IOException {
+    public void getTasksUpcomingWeekForCrop(Long cropId) throws IOException {
         List<List<Task>> dayTaskList = getTasksUpcomingWeek();
         dayTaskList.forEach(taskList -> taskList.removeIf(task -> task.getCropId() != cropId));
-        return dayTaskList;
+        weeklyTaskListProperty.clear();
+        weeklyTaskListProperty.addAll(dayTaskList);
     }
 
     /**