Add ClearNoteCommand

src/main/java/tagline/logic/commands/note/ClearNoteCommand.java

@@ -0,0 +1,23 @@
+// @@author shiweing
+package tagline.logic.commands.note;
+
+import static java.util.Objects.requireNonNull;
+
+import tagline.logic.commands.CommandResult;
+import tagline.model.Model;
+import tagline.model.note.NoteBook;
+
+/**
+ * Clears the note book.
+ */
+public class ClearNoteCommand extends NoteCommand {
+    public static final String COMMAND_WORD = "clear";
+    public static final String MESSAGE_SUCCESS = "Notes have been cleared!";
+
+    @Override
+    public CommandResult execute(Model model) {
+        requireNonNull(model);
+        model.setNoteBook(new NoteBook());
+        return new CommandResult(MESSAGE_SUCCESS, CommandResult.ViewType.NOTE);
+    }
+}

src/main/java/tagline/logic/commands/note/CreateNoteCommand.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.commands.note;
 
 import static java.util.Objects.requireNonNull;

src/main/java/tagline/logic/commands/note/DeleteNoteCommand.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.commands.note;
 
 import static java.util.Objects.requireNonNull;

src/main/java/tagline/logic/commands/note/EditNoteCommand.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.commands.note;
 
 import static java.util.Objects.requireNonNull;

src/main/java/tagline/logic/commands/note/NoteCommand.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.commands.note;
 
 import tagline.logic.commands.Command;

src/main/java/tagline/logic/parser/note/CreateNoteParser.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.parser.note;
 
 import static tagline.commons.core.Messages.MESSAGE_INVALID_COMMAND_FORMAT;

src/main/java/tagline/logic/parser/note/DeleteNoteParser.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.parser.note;
 
 import static tagline.commons.core.Messages.MESSAGE_INVALID_COMMAND_FORMAT;

src/main/java/tagline/logic/parser/note/EditNoteParser.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.parser.note;
 
 import static java.util.Objects.requireNonNull;

src/main/java/tagline/logic/parser/note/NoteCliSyntax.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.parser.note;
 
 import tagline.logic.parser.Prefix;

src/main/java/tagline/logic/parser/note/NoteCommandParser.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.parser.note;
 
 import static tagline.commons.core.Messages.MESSAGE_INVALID_COMMAND_FORMAT;
@@ -8,6 +9,7 @@
 
 import tagline.logic.commands.Command;
 import tagline.logic.commands.HelpCommand;
+import tagline.logic.commands.note.ClearNoteCommand;
 import tagline.logic.commands.note.CreateNoteCommand;
 import tagline.logic.commands.note.DeleteNoteCommand;
 import tagline.logic.commands.note.EditNoteCommand;
@@ -52,6 +54,9 @@ public Command parseCommand(String userInput) throws ParseException {
         case ListNoteCommand.COMMAND_WORD:
             return new ListNoteParser().parse(arguments);
 
+        case ClearNoteCommand.COMMAND_WORD:
+            return new ClearNoteCommand();
+
         default:
             throw new ParseException(MESSAGE_UNKNOWN_COMMAND);
         }

src/main/java/tagline/logic/parser/note/NoteParserUtil.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.parser.note;
 
 import static java.util.Objects.requireNonNull;

src/test/java/tagline/logic/commands/note/CreateNoteCommandTest.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.commands.note;
 
 import static java.util.Objects.requireNonNull;

src/test/java/tagline/logic/commands/note/DeleteNoteCommandTest.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.commands.note;
 
 import static org.junit.jupiter.api.Assertions.assertTrue;

src/test/java/tagline/logic/commands/note/EditNoteCommandTest.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.commands.note;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;

src/test/java/tagline/logic/parser/note/CreateNoteParserTest.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.parser.note;
 
 import static tagline.commons.core.Messages.MESSAGE_INVALID_COMMAND_FORMAT;

src/test/java/tagline/logic/parser/note/DeleteNoteParserTest.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.parser.note;
 
 import static tagline.commons.core.Messages.MESSAGE_INVALID_COMMAND_FORMAT;

src/test/java/tagline/logic/parser/note/EditNoteParserTest.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.parser.note;
 
 import static tagline.commons.core.Messages.MESSAGE_INVALID_COMMAND_FORMAT;

src/test/java/tagline/logic/parser/note/NoteCommandParserTest.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.parser.note;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;

src/test/java/tagline/logic/parser/note/NoteParserUtilTest.java

@@ -1,3 +1,4 @@
+// @@author shiweing
 package tagline.logic.parser.note;
 
 import static tagline.logic.parser.note.NoteParserUtil.MESSAGE_INVALID_INDEX;