Implement Blank class to allow for optional Person fields

src/main/java/seedu/address/logic/parser/AddCommandParser.java

@@ -39,23 +39,24 @@ public AddCommand parse(String args) throws ParseException {
                 ArgumentTokenizer.tokenize(args, PREFIX_NAME, PREFIX_PHONE, PREFIX_EMAIL, PREFIX_ADDRESS, PREFIX_TAG,
                         PREFIX_GAME, PREFIX_PREFERREDTIME);
 
-        if (!arePrefixesPresent(argMultimap, PREFIX_NAME, PREFIX_ADDRESS, PREFIX_PHONE, PREFIX_EMAIL)
+        if (!arePrefixesPresent(argMultimap, PREFIX_NAME)
                 || !argMultimap.getPreamble().isEmpty()) {
             throw new ParseException(String.format(MESSAGE_INVALID_COMMAND_FORMAT, AddCommand.MESSAGE_USAGE));
         }
 
         argMultimap.verifyNoDuplicatePrefixesFor(PREFIX_NAME, PREFIX_PHONE, PREFIX_EMAIL, PREFIX_ADDRESS);
         Name name = ParserUtil.parseName(argMultimap.getValue(PREFIX_NAME).get());
-        Phone phone = ParserUtil.parsePhone(argMultimap.getValue(PREFIX_PHONE).get());
-        Email email = ParserUtil.parseEmail(argMultimap.getValue(PREFIX_EMAIL).get());
-        Address address = ParserUtil.parseAddress(argMultimap.getValue(PREFIX_ADDRESS).get());
+
+        Phone phone = ParserUtil.parsePhone(argMultimap.getValue(PREFIX_PHONE).orElse(""));
+        Email email = ParserUtil.parseEmail(argMultimap.getValue(PREFIX_EMAIL).orElse(""));
+        Address address = ParserUtil.parseAddress(argMultimap.getValue(PREFIX_ADDRESS).orElse(""));
+
         Set<Tag> tagList = ParserUtil.parseTags(argMultimap.getAllValues(PREFIX_TAG));
         Map<String, Game> gameList = ParserUtil.parseGames(argMultimap.getAllValues(PREFIX_GAME));
         Set<PreferredTime> preferredTimeList =
                 ParserUtil.parsePreferredTimes(argMultimap.getAllValues(PREFIX_PREFERREDTIME));
 
         Person person = new Person(name, phone, email, address, tagList, gameList, preferredTimeList);
-
         return new AddCommand(person);
     }
 

src/main/java/seedu/address/logic/parser/ParserUtil.java

@@ -16,6 +16,7 @@
 import seedu.address.model.game.SkillLevel;
 import seedu.address.model.game.Username;
 import seedu.address.model.person.Address;
+import seedu.address.model.person.Blank;
 import seedu.address.model.person.Email;
 import seedu.address.model.person.Name;
 import seedu.address.model.person.Phone;
@@ -64,6 +65,9 @@ public static Name parseName(String name) throws ParseException {
      * @throws ParseException if the given {@code phone} is invalid.
      */
     public static Phone parsePhone(String phone) throws ParseException {
+        if (phone.equals("")) {
+            return new Phone(new Blank());
+        }
         requireNonNull(phone);
         String trimmedPhone = phone.trim();
         if (!Phone.isValidPhone(trimmedPhone)) {
@@ -79,6 +83,9 @@ public static Phone parsePhone(String phone) throws ParseException {
      * @throws ParseException if the given {@code address} is invalid.
      */
     public static Address parseAddress(String address) throws ParseException {
+        if (address.equals("")) {
+            return new Address(new Blank());
+        }
         requireNonNull(address);
         String trimmedAddress = address.trim();
         if (!Address.isValidAddress(trimmedAddress)) {
@@ -94,6 +101,9 @@ public static Address parseAddress(String address) throws ParseException {
      * @throws ParseException if the given {@code email} is invalid.
      */
     public static Email parseEmail(String email) throws ParseException {
+        if (email.equals("")) {
+            return new Email(new Blank());
+        }
         requireNonNull(email);
         String trimmedEmail = email.trim();
         if (!Email.isValidEmail(trimmedEmail)) {

src/main/java/seedu/address/model/person/Address.java

@@ -30,6 +30,15 @@ public Address(String address) {
         value = address;
     }
 
+    /**
+     * Constructs an {@code Address}.
+     *
+     * @param blank A blank address.
+     */
+    public Address(Blank blank) {
+        value = "";
+    }
+
     /**
      * Returns true if a given string is a valid email.
      */

src/main/java/seedu/address/model/person/Blank.java

@@ -0,0 +1,8 @@
+package seedu.address.model.person;
+
+
+/**
+ * Used to create blank version of {@code Person} fields
+ */
+public class Blank {
+}

src/main/java/seedu/address/model/person/Email.java

@@ -44,6 +44,15 @@ public Email(String email) {
         value = email;
     }
 
+    /**
+     * Constructs an {@code Email}.
+     *
+     * @param blank A blank email.
+     */
+    public Email(Blank blank) {
+        value = "";
+    }
+
     /**
      * Returns if a given string is a valid email.
      */

src/main/java/seedu/address/model/person/Phone.java

@@ -26,6 +26,15 @@ public Phone(String phone) {
         value = phone;
     }
 
+    /**
+     * Constructs an {@code Phone}.
+     *
+     * @param blank A blank phone.
+     */
+    public Phone(Blank blank) {
+        value = "";
+    }
+
     /**
      * Returns true if a given string is a valid phone number.
      */

src/main/java/seedu/address/storage/JsonAdaptedPerson.java

@@ -14,6 +14,7 @@
 import seedu.address.commons.exceptions.IllegalValueException;
 import seedu.address.model.game.Game;
 import seedu.address.model.person.Address;
+import seedu.address.model.person.Blank;
 import seedu.address.model.person.Email;
 import seedu.address.model.person.Name;
 import seedu.address.model.person.Person;
@@ -42,10 +43,10 @@ class JsonAdaptedPerson {
      */
     @JsonCreator
     public JsonAdaptedPerson(@JsonProperty("name") String name, @JsonProperty("phone") String phone,
-            @JsonProperty("email") String email, @JsonProperty("address") String address,
-            @JsonProperty("tags") List<JsonAdaptedTag> tags,
-            @JsonProperty("games") List<JsonAdaptedGame> games,
-            @JsonProperty("preferred times") List<JsonAdaptedPreferredTime> preferredTimes) {
+                             @JsonProperty("email") String email, @JsonProperty("address") String address,
+                             @JsonProperty("tags") List<JsonAdaptedTag> tags,
+                             @JsonProperty("games") List<JsonAdaptedGame> games,
+                             @JsonProperty("preferred times") List<JsonAdaptedPreferredTime> preferredTimes) {
         this.name = name;
         this.phone = phone;
         this.email = email;
@@ -95,7 +96,7 @@ public Person toModelType() throws IllegalValueException {
             personGames.put(game.getGameName(), game.toModelType());
         }
         final List<PreferredTime> personPreferredTimes = new ArrayList<>();
-        for (JsonAdaptedPreferredTime preferredTime: preferredTimes) {
+        for (JsonAdaptedPreferredTime preferredTime : preferredTimes) {
             personPreferredTimes.add(preferredTime.toModelType());
         }
 
@@ -107,29 +108,38 @@ public Person toModelType() throws IllegalValueException {
         }
         final Name modelName = new Name(name);
 
-        if (phone == null) {
-            throw new IllegalValueException(String.format(MISSING_FIELD_MESSAGE_FORMAT, Phone.class.getSimpleName()));
-        }
-        if (!Phone.isValidPhone(phone)) {
-            throw new IllegalValueException(Phone.MESSAGE_CONSTRAINTS);
-        }
-        final Phone modelPhone = new Phone(phone);
 
-        if (email == null) {
-            throw new IllegalValueException(String.format(MISSING_FIELD_MESSAGE_FORMAT, Email.class.getSimpleName()));
+        final Phone modelPhone;
+        if (phone.isEmpty()) {
+            modelPhone = new Phone(new Blank());
+        } else {
+            if (!Phone.isValidPhone(phone)) {
+                throw new IllegalValueException(Phone.MESSAGE_CONSTRAINTS);
+            }
+            modelPhone = new Phone(phone);
         }
-        if (!Email.isValidEmail(email)) {
-            throw new IllegalValueException(Email.MESSAGE_CONSTRAINTS);
-        }
-        final Email modelEmail = new Email(email);
 
-        if (address == null) {
-            throw new IllegalValueException(String.format(MISSING_FIELD_MESSAGE_FORMAT, Address.class.getSimpleName()));
+        final Email modelEmail;
+        if (email.isEmpty()) {
+            System.out.println("help");
+            modelEmail = new Email(new Blank());
+        } else {
+            if (!Email.isValidEmail(email)) {
+                throw new IllegalValueException(Email.MESSAGE_CONSTRAINTS);
+            }
+            System.out.println("uh oh");
+            modelEmail = new Email(email);
         }
-        if (!Address.isValidAddress(address)) {
-            throw new IllegalValueException(Address.MESSAGE_CONSTRAINTS);
+
+        final Address modelAddress;
+        if (address.isEmpty()) {
+            modelAddress = new Address(new Blank());
+        } else {
+            if (!Address.isValidAddress(address)) {
+                throw new IllegalValueException(Address.MESSAGE_CONSTRAINTS);
+            }
+            modelAddress = new Address(address);
         }
-        final Address modelAddress = new Address(address);
 
         final Set<Tag> modelTags = new HashSet<>(personTags);
         final Map<String, Game> modelGames = new HashMap<>(personGames);

src/main/java/seedu/address/ui/CommandBox.java

@@ -5,7 +5,6 @@
 
 import javafx.collections.ObservableList;
 import javafx.fxml.FXML;
-import javafx.scene.input.KeyCode;
 import javafx.scene.layout.Region;
 import seedu.address.logic.commands.CommandResult;
 import seedu.address.logic.commands.exceptions.CommandException;
@@ -43,32 +42,29 @@ public CommandBox(CommandExecutor commandExecutor) {
         commandTextField.textProperty().addListener((unused1, unused2, unused3) -> setStyleToDefault());
     }
 
+
     /**
-     * initialize() method from javaFx, used to check for arrow inputs inside the commandTextField
+     * Handles the Up button pressed event.
      */
     @FXML
-    public void initialize() {
-        commandTextField.setOnKeyPressed(event -> {
-            if (event.getCode() == KeyCode.UP && !event.isShiftDown()) {
-                String previousCommand = commandHistory.getPreviousCommand();
-                if (previousCommand != null) {
-                    commandTextField.setText(previousCommand);
-                    commandTextField.positionCaret(previousCommand.length()); // Move cursor to end
-                }
-            }
-            if (event.getCode() == KeyCode.DOWN && !event.isShiftDown()) {
-                String nextCommand = commandHistory.getNextCommand();
-                if (nextCommand != null) {
-                    commandTextField.setText(nextCommand);
-                    commandTextField.positionCaret(nextCommand.length()); // Move cursor to end
-                }
-            }
-            if (event.getCode() == KeyCode.ENTER) {
-                handleCommandEntered();
-            }
-        });
+    public void handleUpEntered() {
+        String previousCommand = commandHistory.getPreviousCommand();
+        if (previousCommand != null) {
+            commandTextField.setText(previousCommand);
+            commandTextField.positionCaret(previousCommand.length()); // Move cursor to end
+        }
+    }
+    /**
+     * Handles the Down button pressed event.
+     */
+    @FXML
+    public void handleDownEntered() {
+        String nextCommand = commandHistory.getNextCommand();
+        if (nextCommand != null) {
+            commandTextField.setText(nextCommand);
+            commandTextField.positionCaret(nextCommand.length()); // Move cursor to end
+        }
     }
-
 
     /**
      * Handles the Enter button pressed event.

src/main/java/seedu/address/ui/CommandHistory.java

@@ -35,6 +35,9 @@ public String getNextCommand() {
             currentHistoryIndex++;
             return commandHistory.get(currentHistoryIndex);
         }
+        if (currentHistoryIndex == commandHistory.size() - 1) {
+            currentHistoryIndex++;
+        }
         return ""; // No next command
     }
 }

src/main/java/seedu/address/ui/PersonCard.java

@@ -67,8 +67,23 @@ public PersonCard(Person person, int displayedIndex) {
         id.setText(displayedIndex + ". ");
         name.setText(person.getName().fullName);
         phone.setText(person.getPhone().value);
+        if (phone.getText().isEmpty()) {
+            phone.setMaxHeight(0);
+            phone.setMinHeight(0);
+            phone.setPrefHeight(0);
+        }
         address.setText(person.getAddress().value);
+        if (address.getText().isEmpty()) {
+            address.setMaxHeight(0);
+            address.setMinHeight(0);
+            address.setPrefHeight(0);
+        }
         email.setText(person.getEmail().value);
+        if (email.getText().isEmpty()) {
+            email.setMaxHeight(0);
+            email.setMinHeight(0);
+            email.setPrefHeight(0);
+        }
         person.getTags().stream()
                 .sorted(Comparator.comparing(tag -> tag.tagName))
                 .forEach(tag -> tags.getChildren().add(new Label(tag.tagName)));

src/main/java/seedu/address/ui/commandpopup/AutoSuggestionTextField.java

@@ -5,7 +5,6 @@
 import java.util.SortedSet;
 import java.util.stream.Collectors;
 
-import javafx.application.Platform;
 import javafx.collections.FXCollections;
 import javafx.collections.ObservableList;
 import javafx.event.EventHandler;
@@ -43,7 +42,6 @@ public class AutoSuggestionTextField extends TextField {
     private PopupControl suggestionPopup;
     private ListView<TextFlow> suggestionList;
     private CommandBox commandBox;
-
     private ObservableList<TextFlow> textFlowItems;
 
     /**
@@ -66,7 +64,7 @@ public AutoSuggestionTextField() {
 
         // Listen for text changes
         textProperty().addListener((obs, oldText, newText) -> {
-            if (!newText.isEmpty()) {
+            if (!newText.trim().isEmpty()) {
                 String[] text = newText.split("\\s+");
                 String command = text[0];
                 boolean hasParams = false;
@@ -81,6 +79,12 @@ public AutoSuggestionTextField() {
 
         // Add key event handler to both the TextField and ListView
         EventHandler<KeyEvent> keyEventHandler = event -> {
+            if (event.getCode() == KeyCode.UP && !event.isShiftDown()) {
+                commandBox.handleUpEntered();
+            }
+            if (event.getCode() == KeyCode.DOWN && !event.isShiftDown()) {
+                commandBox.handleDownEntered();
+            }
             if (event.isShiftDown()) {
                 switch (event.getCode()) {
                 case UP:
@@ -97,6 +101,8 @@ public AutoSuggestionTextField() {
             } else if (event.getCode() == KeyCode.TAB) {
                 handleTab();
                 event.consume();
+            } else if (event.getCode() == KeyCode.ENTER) {
+                handleCommandEntered();
             }
         };
 
@@ -106,19 +112,13 @@ public AutoSuggestionTextField() {
                 CommandTextFlow commandFlow = (CommandTextFlow) selectedTextFlow;
                 setText(commandFlow.getCommandText());
                 this.positionCaret(commandFlow.getCommandText().length());
-                suggestionPopup.hide();
             }
         });
 
         // Add the handler to both the TextField and ListView
         this.addEventHandler(KeyEvent.KEY_PRESSED, keyEventHandler);
         suggestionList.addEventHandler(KeyEvent.KEY_PRESSED, keyEventHandler);
 
-        // Ensure the TextField keeps focus when showing popup
-        suggestionPopup.setOnShowing(event -> {
-            Platform.runLater(() -> this.requestFocus());
-        });
-
         // Prevent ListView from handling its default key events
         suggestionList.addEventFilter(KeyEvent.ANY, event -> {
             if (event.isControlDown() || (event.isShiftDown() && event.getCode() == KeyCode.ENTER)) {
@@ -232,7 +232,7 @@ public void hidePopup() {
     }
 
     /**
-     * Sets the CommandBox object that processes commands entered in the TextField.
+     * Sets the CommandBox object that processes commands entered into the TextField.
      *
      * @param commandBox The CommandBox object to be set.
      */
@@ -353,6 +353,7 @@ public void populatePopup(List<String> filteredList, String searchRequest) {
         }
     }
 
+
     /**
      * Build TextFlow with selected text. Return "case" dependent.
      *