#27: Implementing Alternative Medications for the View

.idea/dataSources.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="DataSourceManagerImpl" format="xml" multifile-model="true">
-    <data-source source="LOCAL" name="Database" uuid="5a5b8be1-080b-4129-b89d-42f1ea832b90">
+    <data-source source="LOCAL" name="nursingHome.db" uuid="5a5b8be1-080b-4129-b89d-42f1ea832b90">
       <driver-ref>sqlite.xerial</driver-ref>
       <synchronize>true</synchronize>
       <jdbc-driver>org.sqlite.JDBC</jdbc-driver>

src/main/java/de/hitec/nhplus/medication/AllMedicationController.java

@@ -52,6 +52,10 @@ public class AllMedicationController {
     private final ObservableList<Medication> medications = FXCollections.observableArrayList();
     private MedicationDao dao;
 
+    public MedicationDao getDao() {
+        return dao;
+    }
+
     /**
      * Initialization method that is called after the binding of all the fields.
      */

src/main/java/de/hitec/nhplus/medication/Medication.java

@@ -164,4 +164,11 @@ public class Medication {
                 .add("Current Stock: " + this.getCurrentStock())
                 .toString();
     }
+
+    public String getComboBoxString() {
+        return new StringJoiner(System.lineSeparator())
+            .add("Name: " + this.getName())
+            .add("Hersteller: " + this.getManufacturer())
+            .toString();
+    }
 }

src/main/java/de/hitec/nhplus/medication/MedicationListCell.java

@@ -0,0 +1,129 @@
+package de.hitec.nhplus.medication;
+
+import java.util.List;
+
+import javafx.beans.value.ObservableValue;
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+import javafx.geometry.Insets;
+import javafx.scene.control.Button;
+import javafx.scene.control.ListCell;
+import javafx.scene.control.ListView;
+import javafx.scene.layout.BorderPane;
+import javafx.scene.text.Text;
+import org.controlsfx.control.SearchableComboBox;
+
+/**
+ * A custom implementation of the {@link ListCell} for {@link Ingredient}s.
+ * This implementation contains an automatic resizing of the parent {@link ListView}.
+ *
+ * @author Dominik Säume
+ */
+public class MedicationListCell extends ListCell<Medication> {
+    private final Button deleteButton;
+    private SearchableComboBox<Medication> comboBox;
+    private static final double BUILTIN_BORDER_WIDTH = 1;
+    private static final double CELL_SPACING = 4;
+    private static final double CELL_PADDING = 4;
+    private static final double BUTTON_PADDING_X = 8;
+    private static final double BUTTON_PADDING_Y = 4;
+    private final double totalSpacing;
+    private final List<Medication> allOtherMedications;
+
+    public MedicationListCell(List<Medication> allOtherMedications) {
+        this.allOtherMedications = allOtherMedications;
+        this.setPadding(new Insets(CELL_PADDING));
+
+        comboBox = new SearchableComboBox();
+        ObservableList<Medication> list = FXCollections.observableArrayList();
+        list.setAll(allOtherMedications);
+        comboBox.setItems(list);
+        comboBox.setPromptText("Alternatve Auswählen");
+        comboBox.setCellFactory(this::comboBoxFactory);
+        comboBox.setButtonCell(comboBoxButtonFactory());
+        comboBox.valueProperty().addListener(this::onComboBoxChange);
+
+        deleteButton = new Button("-");
+        deleteButton.setPadding(new Insets(
+            BUTTON_PADDING_Y,
+            BUTTON_PADDING_X,
+            BUTTON_PADDING_Y,
+            BUTTON_PADDING_X
+        ));
+        deleteButton.setOnAction(event -> getListView().getItems().remove(getItem()));
+
+        // Calculate Delete Button Width
+        Text textNode = new Text(deleteButton.getText());
+        textNode.setFont(deleteButton.getFont());
+        double calculatedDeleteButtonWidth = textNode.getLayoutBounds().getWidth() + BUTTON_PADDING_X * 2;
+
+        totalSpacing = BUILTIN_BORDER_WIDTH * 2 // List View
+            + CELL_PADDING * 2
+            + CELL_SPACING
+            + calculatedDeleteButtonWidth;
+    }
+
+    private void onComboBoxChange(
+        ObservableValue<? extends Medication> observableValue,
+        Medication oldValue,
+        Medication newValue
+    ) {
+        ListView<Medication> listView = getListView();
+        double max = listView.lookupAll("*")
+            .stream()
+            .filter(node -> node instanceof  MedicationListCell)
+            .mapToDouble(node -> getComboBoxWidth())
+            .max()
+            .orElse(0);
+
+        listView.setMinWidth(max + totalSpacing);
+    }
+
+
+    @Override
+    protected void updateItem(Medication item, boolean empty) {
+        super.updateItem(item, empty);
+        if (empty || item == null) {
+            setGraphic(null);
+        } else {
+            BorderPane cellPane = new BorderPane();
+            cellPane.setCenter(comboBox);
+            cellPane.setRight(deleteButton);
+            BorderPane.setMargin(deleteButton, new Insets(0, 0, 0, CELL_SPACING));
+            setGraphic(cellPane);
+        }
+    }
+
+    private double getComboBoxWidth(){
+        return comboBox.getWidth();
+    }
+
+    private ListCell comboBoxFactory(Object param) {
+        return new ListCell<Medication>() {
+
+            @Override
+            protected void updateItem(Medication med, boolean empty) {
+                super.updateItem(med, empty);
+                setText(
+                    empty || med == null
+                        ? null
+                        : med.getComboBoxString()
+                );
+            }
+        };
+    }
+
+    private ListCell comboBoxButtonFactory() {
+        return new ListCell<Medication>() {
+            @Override
+            protected void updateItem(Medication med, boolean empty) {
+                super.updateItem(med, empty);
+                setText(
+                    empty || med == null
+                        ? comboBox.getPromptText()
+                        : med.getComboBoxString()
+                );
+            }
+        };
+    }
+}

src/main/java/de/hitec/nhplus/medication/MedicationModalController.java

@@ -1,6 +1,11 @@
 package de.hitec.nhplus.medication;
 
-import de.hitec.nhplus.treatment.Treatment;
+import static de.hitec.nhplus.utils.Validator.*;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Predicate;
+
 import javafx.beans.value.ChangeListener;
 import javafx.collections.FXCollections;
 import javafx.collections.ObservableList;
@@ -11,12 +16,6 @@ import javafx.scene.control.TextArea;
 import javafx.scene.control.TextField;
 import javafx.stage.Stage;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.function.Predicate;
-
-import static de.hitec.nhplus.utils.Validator.*;
-
 /**
  * The controller for creating and editing a specific {@link Medication}.
  *
@@ -38,21 +37,25 @@ public class MedicationModalController {
     public TextArea textAreaPossibleSideEffects;
     @FXML
     public Button buttonSave;
+    @FXML
+    public ListView<Medication> listViewAlternativeMedication;
 
     private Stage stage;
     private Medication medication;
     private final ObservableList<Ingredient> ingredients = FXCollections.observableArrayList();
+    private final ObservableList<Medication> alternativeMediaction = FXCollections.observableArrayList();
     private AllMedicationController controller;
     private boolean isNewMedication = false;
+    private List<Medication> allOtherMedications;
 
     /**
      * Initialization method that is called after the binding of all the fields.
      */
     @FXML
     public void initialize(
-            Stage stage,
-            AllMedicationController controller,
-            Medication medication
+        Stage stage,
+        AllMedicationController controller,
+        Medication medication
     ) {
         this.stage = stage;
         this.controller = controller;
@@ -62,25 +65,29 @@ public class MedicationModalController {
         } else {
             isNewMedication = true;
             this.medication = new Medication(
-                    "",
-                    "",
-                    new ArrayList<>(),
-                    "",
-                    "",
-                    0
+                "",
+                "",
+                new ArrayList<>(),
+                "",
+                "",
+                0
             );
             this.buttonSave.setDisable(true);
         }
 
         listViewIngredients.setCellFactory(cellData -> new IngredientListCell());
         listViewIngredients.setItems(ingredients);
+
         showData();
 
+        listViewAlternativeMedication.setCellFactory(cellData -> new MedicationListCell(allOtherMedications));
+        listViewAlternativeMedication.setItems(alternativeMediaction);
+
         ChangeListener<String> inputMedicationValidationListener = (observableValue, oldText, newText) -> {
             boolean isValid = isValidMedicationName(textFieldName.getText())
-                              && isValidMedicationManufacturer(textFieldManufacturer.getText())
-                              && isValidMedicationAdministrationMethod(textFieldAdministrationMethod.getText())
-                              && isValidStock(textFieldCurrentStock.getText());
+                && isValidMedicationManufacturer(textFieldManufacturer.getText())
+                && isValidMedicationAdministrationMethod(textFieldAdministrationMethod.getText())
+                && isValidStock(textFieldCurrentStock.getText());
 
             this.buttonSave.setDisable(!isValid);
         };
@@ -96,6 +103,17 @@ public class MedicationModalController {
      */
     private void showData() {
         ingredients.setAll(medication.getIngredients());
+        try {
+            allOtherMedications = controller.getDao().readAll();
+            if (!isNewMedication) {
+                allOtherMedications = allOtherMedications
+                    .stream()
+                    .filter(med -> med.getId() != medication.getId())
+                    .toList();
+            }
+        } catch (Exception exception) {
+            exception.printStackTrace();
+        }
         textFieldName.setText(medication.getName());
         textFieldManufacturer.setText(medication.getManufacturer());
         textFieldAdministrationMethod.setText(medication.getAdministrationMethod());
@@ -111,12 +129,12 @@ public class MedicationModalController {
         this.medication.setCurrentStock(Integer.parseInt(textFieldCurrentStock.getText()));
         this.medication.setPossibleSideEffects(textAreaPossibleSideEffects.getText());
         this.medication.setIngredients(ingredients
-                .stream()
-                .map(Ingredient::getName)
-                .distinct()
-                .filter(Predicate.not(String::isEmpty))
-                .map(Ingredient::new)
-                .toList()
+            .stream()
+            .map(Ingredient::getName)
+            .distinct()
+            .filter(Predicate.not(String::isEmpty))
+            .map(Ingredient::new)
+            .toList()
         );
 
         if (isNewMedication) {
@@ -138,4 +156,15 @@ public class MedicationModalController {
     public void handleAddIngredient() {
         ingredients.add(new Ingredient(""));
     }
+
+    public void handleAddAlternativeMedication() {
+        alternativeMediaction.add(new Medication(
+            null,
+            null,
+            List.of(),
+            null,
+            null,
+            -1
+        ));
+    }
 }

src/main/java/module-info.java

@@ -3,6 +3,7 @@ module de.hitec.nhplus {
     requires javafx.fxml;
     requires java.sql;
     requires org.xerial.sqlitejdbc;
+    requires org.controlsfx.controls;
 
     exports de.hitec.nhplus;
     opens de.hitec.nhplus to javafx.fxml;

src/main/resources/de/hitec/nhplus/medication/AllMedicationView.fxml

@@ -49,6 +49,11 @@
                         minWidth="100.0"
                         text="Lagerbestand"
                 />
+                <TableColumn
+                    fx:id="columnAlternativeMedication"
+                    minWidth="100.0"
+                    text="Alternative Medikamente"
+                />
             </columns>
             <columnResizePolicy>
                 <TableView fx:constant="CONSTRAINED_RESIZE_POLICY"/>

src/main/resources/de/hitec/nhplus/medication/MedicationModal.fxml

@@ -3,6 +3,7 @@
 <?import javafx.geometry.*?>
 <?import javafx.scene.control.*?>
 <?import javafx.scene.layout.*?>
+<?import org.controlsfx.control.SearchableComboBox?>
 <BorderPane
         xmlns="http://javafx.com/javafx/17.0.2-ea"
         xmlns:fx="http://javafx.com/fxml/1"
@@ -77,16 +78,13 @@
             </padding>
             <left>
                 <BorderPane>
-                    <BorderPane.margin>
-                        <Insets right="8"/>
-                    </BorderPane.margin>
                     <top>
                         <Label text="Inhaltsstoffe:"/>
                     </top>
                     <center>
                         <ListView fx:id="listViewIngredients" minWidth="200">
                             <BorderPane.margin>
-                                <Insets top="8"/>
+                                <Insets top="4"/>
                             </BorderPane.margin>
                         </ListView>
                     </center>
@@ -105,10 +103,45 @@
                     </bottom>
                 </BorderPane>
             </left>
-            <center>
+            <right>
                 <BorderPane>
                     <top>
-                        <Label text="Nebenwirkungen"/>
+                        <Label text="Alternative Medikamente:"/>
+                    </top>
+                    <center>
+                        <ListView fx:id="listViewAlternativeMedication" minWidth="200">
+                            <BorderPane.margin>
+                                <Insets top="4"/>
+                            </BorderPane.margin>
+                        </ListView>
+                    </center>
+                    <bottom>
+                        <AnchorPane>
+                            <BorderPane.margin>
+                                <Insets top="8"/>
+                            </BorderPane.margin>
+                            <Button
+                                onAction="#handleAddAlternativeMedication"
+                                text="+"
+                                AnchorPane.leftAnchor="0"
+                                AnchorPane.rightAnchor="0"
+                            />
+                        </AnchorPane>
+                    </bottom>
+                </BorderPane>
+            </right>
+            <center>
+                <BorderPane>
+                    <BorderPane.margin>
+                        <Insets left="8" right="8"/>
+                    </BorderPane.margin>
+                    <top>
+                        <Label text="Nebenwirkungen">
+                            <BorderPane.margin>
+                                <Insets bottom="4"/>
+                            </BorderPane.margin>
+
+                        </Label>
                     </top>
                     <center>
                         <TextArea fx:id="textAreaPossibleSideEffects"/>