Add 'edit' functionality, improve ui, fix modularity, sort positions based on last modified, store more metadata

src/main/java/me/bionicbeanie/mods/SaveCoordinatesClient.java

@@ -13,6 +13,7 @@ import me.bionicbeanie.mods.gui.view.DefaultViewHandler;
 import me.bionicbeanie.mods.gui.view.ListViewHandler;
 import me.bionicbeanie.mods.impl.FileStore;
 import me.bionicbeanie.mods.impl.PlayerLocator;
+import me.bionicbeanie.mods.model.PlayerPosition;
 import net.fabricmc.api.ClientModInitializer;
 import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents;
 import net.fabricmc.fabric.api.client.keybinding.v1.KeyBindingHelper;
@@ -50,11 +51,11 @@ public class SaveCoordinatesClient implements ClientModInitializer {
     private IGui CreateModGui(MinecraftClient client) {
         IGui gui = new SaveCoordinatesGui();
         IFileStore fileStore = new FileStore(client.runDirectory.getAbsolutePath());
-        IViewHandler saveHandler = new DefaultViewHandler(fileStore, locator, client, gui);
+        IViewHandler<PlayerPosition> defaultHandler = new DefaultViewHandler(fileStore, locator, client, gui);
-        IViewHandler listHandler = new ListViewHandler(fileStore, gui, client);
+        IViewHandler<Void> listHandler = new ListViewHandler(fileStore, gui, client);
         IScreenController screenController = new ScreenController(client);
 
-        gui.init(saveHandler, listHandler, screenController);
+        gui.init(defaultHandler, listHandler, screenController);
 
         return gui;
     }

src/main/java/me/bionicbeanie/mods/api/IFileStore.java

@@ -7,6 +7,10 @@ import me.bionicbeanie.mods.model.PlayerPosition;
 
 public interface IFileStore {
 
+    public String getDefaultWorld() throws IOException;
+    
+    public void setDefaultWorld(String defaultWorldName) throws IOException;
+
     public void save(PlayerPosition position) throws IOException;
 
     public void delete(String id) throws IOException;

src/main/java/me/bionicbeanie/mods/api/IGui.java

@@ -1,11 +1,16 @@
 package me.bionicbeanie.mods.api;
 
+import me.bionicbeanie.mods.model.PlayerPosition;
+
 public interface IGui {
 
-    public void init(IViewHandler saveHandler, IViewHandler listHandler, IScreenController screenController);
+    public void init(IViewHandler<PlayerPosition> saveHandler, IViewHandler<Void> listHandler,
+            IScreenController screenController);
 
     public void showDefaultView();
     
+    public void setDefaultViewState(PlayerPosition position);
+
     public void showListView();
 
     public void close();

src/main/java/me/bionicbeanie/mods/api/IViewHandler.java

@@ -1,7 +1,9 @@
 package me.bionicbeanie.mods.api;
 
-public interface IViewHandler {
+public interface IViewHandler<T> {
 
+    void setState(T state);
+    void clearState();
     void placeWidgets(IRootGridPanel rootPanel);
 
 }

src/main/java/me/bionicbeanie/mods/api/IViewOperation.java

@@ -0,0 +1,5 @@
+package me.bionicbeanie.mods.api;
+
+public interface IViewOperation extends Runnable {
+
+}

src/main/java/me/bionicbeanie/mods/gui/SaveCoordinatesGui.java

@@ -3,20 +3,22 @@ package me.bionicbeanie.mods.gui;
 import io.github.cottonmc.cotton.gui.client.LightweightGuiDescription;
 import me.bionicbeanie.mods.api.IGui;
 import me.bionicbeanie.mods.api.IViewHandler;
+import me.bionicbeanie.mods.model.PlayerPosition;
 import me.bionicbeanie.mods.api.IRootGridPanel;
 import me.bionicbeanie.mods.api.IScreenController;
 
 public class SaveCoordinatesGui extends LightweightGuiDescription implements IGui {
 
     private IRootGridPanel rootGridPanel;
-    private IViewHandler saveHandler;
+    private IViewHandler<PlayerPosition> defaultHandler;
-    private IViewHandler listHandler;
+    private IViewHandler<Void> listHandler;
     private IScreenController screenController;
 
     @Override
-    public void init(IViewHandler saveHandler, IViewHandler listHandler, IScreenController screenController) {
+    public void init(IViewHandler<PlayerPosition> saveHandler, IViewHandler<Void> listHandler,
+            IScreenController screenController) {
         this.rootGridPanel = createRootPanel();
-        this.saveHandler = saveHandler;
+        this.defaultHandler = saveHandler;
         this.listHandler = listHandler;
         this.screenController = screenController;
 
@@ -25,7 +27,12 @@ public class SaveCoordinatesGui extends LightweightGuiDescription implements IGu
 
     @Override
     public void showDefaultView() {
-        showView(saveHandler);
+        showView(defaultHandler);
+    }
+
+    @Override
+    public void setDefaultViewState(PlayerPosition position) {
+        defaultHandler.setState(position);
     }
 
     @Override
@@ -44,15 +51,16 @@ public class SaveCoordinatesGui extends LightweightGuiDescription implements IGu
 
     private IRootGridPanel createRootPanel() {
         RootGridPanel panel = new RootGridPanel(18);
-        panel.setSize(10 * 18, 10 * 18);
+        panel.setSize(15 * 18, 10 * 18);
 
         setRootPanel(panel);
         return panel;
     }
 
-    private void showView(IViewHandler handler) {
+    private void showView(IViewHandler<?> handler) {
         rootGridPanel.reset();
         handler.placeWidgets(rootGridPanel);
         rootGridPanel.validate(this);
     }
+
 }

src/main/java/me/bionicbeanie/mods/gui/view/DefaultViewHandler.java

@@ -1,8 +1,5 @@
 package me.bionicbeanie.mods.gui.view;
 
-import java.io.IOException;
-import java.util.UUID;
-
 import io.github.cottonmc.cotton.gui.widget.WButton;
 import io.github.cottonmc.cotton.gui.widget.WLabel;
 import io.github.cottonmc.cotton.gui.widget.WText;
@@ -18,7 +15,7 @@ import me.bionicbeanie.mods.util.DimensionSpriteUtil;
 import net.minecraft.client.MinecraftClient;
 import net.minecraft.text.LiteralText;
 
-public class DefaultViewHandler extends ViewHandlerBase {
+public class DefaultViewHandler extends ViewHandlerBase<PlayerPosition> {
 
     private IPlayerLocator locator;
 
@@ -28,37 +25,64 @@ public class DefaultViewHandler extends ViewHandlerBase {
     }
 
     @Override
-    public void placeWidgets(IRootGridPanel root) {
+    public void placeWidgets(IRootGridPanel root, PlayerPosition existingPosition) {
 
-        PlayerRawPosition rawPosition = locator.locate(client);
+        PlayerRawPosition rawPosition = existingPosition == null ? locator.locate(client) : existingPosition;
 
-        WWidget xLabel= CreateLabelForCoorindate("X");
+        WWidget xLabel = CreateLabelForCoorindate("X");
-        WWidget yLabel= CreateLabelForCoorindate("Y");
+        WWidget yLabel = CreateLabelForCoorindate("Y");
-        WWidget zLabel= CreateLabelForCoorindate("Z");
+        WWidget zLabel = CreateLabelForCoorindate("Z");
 
         WWidget xText = CreateWidgetForCoordinate(rawPosition.getX());
         WWidget yText = CreateWidgetForCoordinate(rawPosition.getY());
         WWidget zText = CreateWidgetForCoordinate(rawPosition.getZ());
 
-        root.add(xLabel, 1, 1, 2, 1);
+        root.add(xLabel, 2, 1, 2, 1);
-        root.add(yLabel, 1, 2, 2, 1);
+        root.add(yLabel, 2, 2, 2, 1);
-        root.add(zLabel, 1, 3, 2, 1);
+        root.add(zLabel, 2, 3, 2, 1);
 
-        root.add(xText, 2, 1, 2, 1);
+        root.add(xText, 3, 1, 2, 1);
-        root.add(yText, 2, 2, 2, 1);
+        root.add(yText, 3, 2, 2, 1);
-        root.add(zText, 2, 3, 2, 1);
+        root.add(zText, 3, 3, 2, 1);
 
         WWidget icon = DimensionSpriteUtil.CreateWorldIcon(rawPosition.getWorldDimension());
-        root.add(icon, 6, 1, 2, 2);
+        root.add(icon, 8, 1, 2, 2);
 
-        WTextField name = CreateNameField();
+        String defaultWorld = getDefaultWorld(existingPosition);
-        root.add(name, 0, 6, 8, 1);
+        WTextField world = CreateWorldField(defaultWorld);
+        root.add(world, 0, 4, 4, 1);
 
-        WWidget save = CreateSaveButton(rawPosition, name);
+        WTextField location = CreateLocationField(existingPosition);
-        root.add(save, 9, 6, 2, 1);
+        root.add(location, 5, 4, 7, 1);
+        
+        WTextField notes = CreateNotesField(existingPosition);
+        root.add(notes, 0, 6, 12, 1);
+
+        WWidget save = CreateSaveButton(rawPosition, location, notes, world, existingPosition);
+        root.add(save, 13, 6, 2, 1);
 
         WWidget list = CreateListButton();
-        root.add(list, 9, 8, 2, 1);
+        root.add(list, 13, 9, 2, 1);
+
+        WWidget ping = CreatePingButton(rawPosition);
+        root.add(ping, 13, 1, 2, 1);
+
+        WWidget close = CreateCloseButton();
+        root.add(close, 0, 9, 2, 1);
+    }
+
+    private String getDefaultWorld(PlayerPosition existingPosition) {
+        if (existingPosition != null && existingPosition.getPositionMetadata().getWorldName() != null) {
+            return existingPosition.getPositionMetadata().getWorldName();
+        }
+
+        try {
+            return fileStore.getDefaultWorld();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        return "";
     }
 
     private WWidget CreateLabelForCoorindate(String label) {
@@ -69,31 +93,57 @@ public class DefaultViewHandler extends ViewHandlerBase {
         return new WText(new LiteralText(String.valueOf(l)), 0x3939ac);
     }
 
-    private WTextField CreateNameField() {
+    private WTextField CreateLocationField(PlayerPosition existingPosition) {
-        return new WTextField(new LiteralText("location name"));
+        WTextField location = new WTextField(new LiteralText("location name"));
+
+        if (existingPosition != null) {
+            location.setText(existingPosition.getLocationName());
+        }
+        
+        location.setMaxLength(20);
+
+        return location;
     }
 
-    private WWidget CreateSaveButton(PlayerRawPosition rawPosition, WTextField textField) {
+    private WTextField CreateNotesField(PlayerPosition existingPosition) {
-        WButton button = new WButton(new LiteralText("save"));
+        WTextField notes = new WTextField(new LiteralText("additional notes"));
-        button.setOnClick(new Runnable() {
-            @Override
-            public void run() {
-                try {
-                    String id = UUID.randomUUID().toString();
-                    fileStore.save(new PlayerPosition(id, rawPosition, textField.getText(), null));
-                } catch (IOException e) {
-                    e.printStackTrace();
-                }
 
-                gui.close();
+        if (existingPosition != null && existingPosition.getPositionMetadata() != null) {
-            }
+            notes.setText(existingPosition.getPositionMetadata().getNotes());
-        });
+        }
+
+        return notes;
+    }
+
+    private WTextField CreateWorldField(String defaultWorld) {
+        WTextField world = new WTextField(new LiteralText("world name"));
+        world.setMaxLength(7);
+        world.setText(defaultWorld);
+        return world;
+    }
+
+    private WWidget CreateSaveButton(PlayerRawPosition rawPosition, WTextField location, WTextField notes,
+            WTextField world, PlayerPosition existingPosition) {
+        WButton button = new WButton(new LiteralText("SAVE"));
+        button.setOnClick(new SaveOperation(fileStore, gui, rawPosition, world, location, notes, existingPosition));
         return button;
     }
 
     private WWidget CreateListButton() {
-        WButton button = new WButton(new LiteralText("list"));
+        WButton button = new WButton(new LiteralText("LIST"));
         button.setOnClick(gui::showListView);
         return button;
     }
+
+    private WWidget CreatePingButton(PlayerRawPosition rawPosition) {
+        WButton button = new WButton(new LiteralText("PING"));
+        button.setOnClick(new PingOperation(fileStore, gui, rawPosition));
+        return button;
+    }
+
+    private WWidget CreateCloseButton() {
+        WButton button = new WButton(new LiteralText("CLOSE"));
+        button.setOnClick(gui::close);
+        return button;
+    }
 }

src/main/java/me/bionicbeanie/mods/gui/view/DeleteOperation.java

@@ -0,0 +1,18 @@
+package me.bionicbeanie.mods.gui.view;
+
+import me.bionicbeanie.mods.api.IFileStore;
+import me.bionicbeanie.mods.api.IGui;
+import me.bionicbeanie.mods.model.PlayerPosition;
+
+public class DeleteOperation extends ViewPositionOperationBase {
+
+    public DeleteOperation(IFileStore fileStore, IGui gui, PlayerPosition position) {
+        super(fileStore, gui, position);
+    }
+
+    @Override
+    protected void executeOperation(IFileStore fileStore, IGui gui, PlayerPosition position) throws Exception {
+        fileStore.delete(position.getId());
+        gui.showListView();
+    }
+}

src/main/java/me/bionicbeanie/mods/gui/view/ListViewHandler.java

@@ -1,6 +1,7 @@
 package me.bionicbeanie.mods.gui.view;
 
 import java.io.IOException;
+import java.util.Collections;
 import java.util.List;
 import java.util.function.BiConsumer;
 
@@ -18,34 +19,53 @@ import net.minecraft.client.MinecraftClient;
 import net.minecraft.text.LiteralText;
 import net.minecraft.util.Identifier;
 
-public class ListViewHandler extends ViewHandlerBase {
+public class ListViewHandler extends ViewHandlerBase<Void> {
 
     public ListViewHandler(IFileStore fileStore, IGui gui, MinecraftClient client) {
         super(fileStore, gui, client);
     }
 
     @Override
-    public void placeWidgets(IRootGridPanel root) {
+    public void placeWidgets(IRootGridPanel root, Void nullState) {
 
-        BiConsumer<PlayerPosition, CoordinatesListItemPanel> configurator = (PlayerPosition position,
+        List<PlayerPosition> positions = getPositions(fileStore);
-                CoordinatesListItemPanel panel) -> {
+        WListPanel<PlayerPosition, CoordinatesListItemPanel> listPanel = createListPane(positions);
+
+        WButton backButton = createBackButton();
+
+        root.add(listPanel, 0, 0, 15, 9);
+        root.add(backButton, 0, 9, 2, 1);
+    }
+
+    private WButton createBackButton() {
+        WButton backButton = new WButton(new LiteralText("BACK"));
+        backButton.setOnClick(gui::showDefaultView);
+        return backButton;
+    }
+
+    private WListPanel<PlayerPosition, CoordinatesListItemPanel> createListPane(List<PlayerPosition> positions) {
+        BiConsumer<PlayerPosition, CoordinatesListItemPanel> configurator = (position, panel) -> {
             panel.setPosition(position, fileStore, gui);
         };
 
-        List<PlayerPosition> positions;
+        WListPanel<PlayerPosition, CoordinatesListItemPanel> panel = new WListPanel<>(positions,
-        try {
-            positions = fileStore.list();
-        } catch (IOException e) {
-            e.printStackTrace();
-            return;
-        }
-
-        WListPanel<PlayerPosition, CoordinatesListItemPanel> listPanel = new WListPanel<>(positions,
                 CoordinatesListItemPanel::new, configurator);
 
-        listPanel.setListItemHeight(2 * 18);
+        panel.setListItemHeight(2 * 18);
 
-        root.add(listPanel, 0, 0, 11, 11);
+        return panel;
+    }
+
+    private List<PlayerPosition> getPositions(IFileStore fileStore) {
+        try {
+            List<PlayerPosition> positions = fileStore.list();
+            Collections.sort(positions, (p1, p2) -> p2.getPositionMetadata().getLastModified()
+                    .compareTo(p1.getPositionMetadata().getLastModified()));
+            return positions;
+        } catch (IOException e) {
+            e.printStackTrace();
+            return Collections.emptyList();
+        }
     }
 
     public static class CoordinatesListItemPanel extends WPlainPanel {
@@ -54,44 +74,49 @@ public class ListViewHandler extends ViewHandlerBase {
         private WLabel location;
         private WSprite icon;
         private WButton deleteButton;
+        private WButton pingButton;
+        private WButton detailButton;
+        private WLabel world;
 
         public CoordinatesListItemPanel() {
             this.coordinates = new WLabel("Foo");
             this.location = new WLabel("Foo");
+            this.world = new WLabel("Foo");
             this.icon = new WSprite(new Identifier("minecraft:textures/item/ender_eye.png"));
             this.deleteButton = new WButton(new LiteralText("x"));
+            this.pingButton = new WButton(new LiteralText("!"));
+            this.detailButton = new WButton(new LiteralText("+"));
 
             this.add(icon, 0, 0, 1 * 9, 1 * 9);
-            this.add(location, 1 * 18, 0, 4 * 18, 1 * 18);
+            this.add(world, 1 * 18, 0, 3 * 18, 1 * 18);
+            this.add(location, 4 * 18, 0, 4 * 18, 1 * 18);
             this.add(coordinates, 1 * 18, 1 * 18, 9 * 18, 1 * 18);
-            this.add(deleteButton, 9 * 18, 0, 1 * 18, 1 * 18);
+            this.add(deleteButton, 13 * 18, 0, 1 * 18, 1 * 18);
+            this.add(pingButton, 12 * 18, 0, 1 * 18, 1 * 18);
+            this.add(detailButton, 11 * 18, 0, 1 * 18, 1 * 18);
 
             this.icon.setSize(1 * 15, 1 * 15);
+            this.world.setSize(3 * 18, 1 * 18);
             this.location.setSize(9 * 18, 1 * 18);
             this.coordinates.setSize(2 * 18, 9 * 18);
             this.deleteButton.setSize(1 * 18, 1 * 18);
-            this.setSize(9 * 18, 2 * 18);
+            this.pingButton.setSize(1 * 18, 1 * 18);
+            this.detailButton.setSize(1 * 18, 1 * 18);
+
+            this.setSize(15 * 18, 2 * 18);
         }
 
         public void setPosition(PlayerPosition position, IFileStore fileStore, IGui gui) {
             this.icon.setImage(DimensionSpriteUtil.CreateWorldIconIdentifier(position.getWorldDimension()));
             this.location.setText(new LiteralText(position.getLocationName()));
             this.location.setColor(0x3939ac);
+            this.world.setText(new LiteralText("[" + position.getPositionMetadata().getWorldName() + "]"));
+            this.world.setColor(0xb80000);
             this.coordinates
                     .setText(new LiteralText(position.getX() + ", " + position.getY() + ", " + position.getZ()));
-            this.deleteButton.setOnClick(new Runnable() {
+            this.deleteButton.setOnClick(new DeleteOperation(fileStore, gui, position));
-
+            this.pingButton.setOnClick(new PingOperation(fileStore, gui, position));
-                @Override
+            this.detailButton.setOnClick(new ShowDetailOperation(fileStore, gui, position));
-                public void run() {
-                    try {
-                        fileStore.delete(position.getId());
-                        gui.showListView();
-                    } catch (IOException e) {
-                        e.printStackTrace();
-                    }
-                }
-            });
         }
     }
-
 }

src/main/java/me/bionicbeanie/mods/gui/view/PingOperation.java

@@ -0,0 +1,23 @@
+package me.bionicbeanie.mods.gui.view;
+
+import me.bionicbeanie.mods.api.IFileStore;
+import me.bionicbeanie.mods.api.IGui;
+import me.bionicbeanie.mods.model.PlayerRawPosition;
+import net.minecraft.client.MinecraftClient;
+
+public class PingOperation extends ViewOperationBase{
+
+    private PlayerRawPosition position;
+
+    public PingOperation(IFileStore fileStore, IGui gui, PlayerRawPosition position) {
+        super(fileStore, gui);
+        
+        this.position = position;
+    }
+
+    @SuppressWarnings("resource")
+    @Override
+    protected void executeOperation(IFileStore fileStore, IGui gui) throws Exception {
+        MinecraftClient.getInstance().player.sendChatMessage(position.toString());
+    }
+}

src/main/java/me/bionicbeanie/mods/gui/view/SaveOperation.java

@@ -0,0 +1,54 @@
+package me.bionicbeanie.mods.gui.view;
+
+import java.util.UUID;
+
+import io.github.cottonmc.cotton.gui.widget.WTextField;
+import me.bionicbeanie.mods.api.IFileStore;
+import me.bionicbeanie.mods.api.IGui;
+import me.bionicbeanie.mods.model.PlayerPosition;
+import me.bionicbeanie.mods.model.PlayerRawPosition;
+import me.bionicbeanie.mods.model.PositionMetadata;
+
+public class SaveOperation extends ViewOperationBase {
+
+    private PlayerRawPosition rawPosition;
+    private WTextField location, notes;
+    private WTextField world;
+    private PlayerPosition existingPosition;
+
+    public SaveOperation(IFileStore fileStore, IGui gui, PlayerRawPosition rawPosition, WTextField world,
+            WTextField location, WTextField notes, PlayerPosition existingPosition) {
+        super(fileStore, gui);
+        this.rawPosition = rawPosition;
+        this.existingPosition = existingPosition;
+        this.world = world;
+        this.location = location;
+        this.notes = notes;
+    }
+
+    @Override
+    protected void executeOperation(IFileStore fileStore, IGui gui) throws Exception {
+
+        String id = existingPosition == null ? UUID.randomUUID().toString() : existingPosition.getId();
+        PositionMetadata metadata = CreateMetadata(existingPosition);
+        
+        PlayerPosition position = new PlayerPosition(id, rawPosition, this.location.getText(), metadata);
+
+        fileStore.save(position);
+        fileStore.setDefaultWorld(position.getPositionMetadata().getWorldName());
+        gui.showListView();
+        gui.setDefaultViewState(null);
+    }
+
+    private PositionMetadata CreateMetadata(PlayerPosition existingPosition) {
+        if(existingPosition == null) {
+            return new PositionMetadata(this.world.getText(), this.notes.getText());
+        }
+        
+        existingPosition.getPositionMetadata().setWorldName(this.world.getText());
+        existingPosition.getPositionMetadata().setNotes(this.notes.getText());
+        existingPosition.getPositionMetadata().updateLastModified();
+        
+        return existingPosition.getPositionMetadata();
+    }
+}

src/main/java/me/bionicbeanie/mods/gui/view/ShowDetailOperation.java

@@ -0,0 +1,19 @@
+package me.bionicbeanie.mods.gui.view;
+
+import me.bionicbeanie.mods.api.IFileStore;
+import me.bionicbeanie.mods.api.IGui;
+import me.bionicbeanie.mods.model.PlayerPosition;
+
+public class ShowDetailOperation extends ViewPositionOperationBase {
+
+    public ShowDetailOperation(IFileStore fileStore, IGui gui, PlayerPosition position) {
+        super(fileStore, gui, position);
+    }
+
+    @Override
+    protected void executeOperation(IFileStore fileStore, IGui gui, PlayerPosition position) throws Exception {
+        gui.setDefaultViewState(position);
+        gui.showDefaultView();
+    }
+
+}

src/main/java/me/bionicbeanie/mods/gui/view/ViewHandlerBase.java

@@ -3,15 +3,17 @@ package me.bionicbeanie.mods.gui.view;
 import io.github.cottonmc.cotton.gui.widget.WWidget;
 import me.bionicbeanie.mods.api.IFileStore;
 import me.bionicbeanie.mods.api.IGui;
+import me.bionicbeanie.mods.api.IRootGridPanel;
 import me.bionicbeanie.mods.api.IViewHandler;
 import net.minecraft.client.MinecraftClient;
 
-public abstract class ViewHandlerBase implements IViewHandler {
+public abstract class ViewHandlerBase<T> implements IViewHandler<T> {
 
     protected IFileStore fileStore;
     protected IGui gui;
     protected MinecraftClient client;
     protected WWidget panel;
+    private T state;
 
     protected ViewHandlerBase(IFileStore fileStore, IGui gui, MinecraftClient client) {
         this.fileStore = fileStore;
@@ -19,4 +21,21 @@ public abstract class ViewHandlerBase implements IViewHandler {
         this.client = client;
     }
 
+    protected abstract void placeWidgets(IRootGridPanel rootPanel, T state);
+
+    @Override
+    public void clearState() {
+        state = null;
+    }
+
+    @Override
+    public void setState(T state) {
+        this.state = state;
+    }
+
+    @Override
+    public void placeWidgets(IRootGridPanel rootPanel) {
+        placeWidgets(rootPanel, state);
+    }
+
 }

src/main/java/me/bionicbeanie/mods/gui/view/ViewOperationBase.java

@@ -0,0 +1,26 @@
+package me.bionicbeanie.mods.gui.view;
+
+import me.bionicbeanie.mods.api.IFileStore;
+import me.bionicbeanie.mods.api.IGui;
+
+public abstract class ViewOperationBase implements Runnable {
+
+    private IFileStore fileStore;
+    private IGui gui;
+
+    public ViewOperationBase(IFileStore fileStore, IGui gui) {
+        this.fileStore = fileStore;
+        this.gui = gui;
+    }
+
+    @Override
+    public void run() {
+        try {
+            executeOperation(fileStore, gui);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    protected abstract void executeOperation(IFileStore fileStore, IGui gui) throws Exception;
+}

src/main/java/me/bionicbeanie/mods/gui/view/ViewPositionOperationBase.java

@@ -0,0 +1,22 @@
+package me.bionicbeanie.mods.gui.view;
+
+import me.bionicbeanie.mods.api.IFileStore;
+import me.bionicbeanie.mods.api.IGui;
+import me.bionicbeanie.mods.model.PlayerPosition;
+
+public abstract class ViewPositionOperationBase extends ViewOperationBase{
+
+    private PlayerPosition position;
+
+    public ViewPositionOperationBase(IFileStore fileStore, IGui gui, PlayerPosition position) {
+        super(fileStore, gui);
+        this.position = position;
+    }
+    
+    @Override
+    protected void executeOperation(IFileStore fileStore, IGui gui) throws Exception {
+        executeOperation(fileStore, gui, position);
+    }
+
+    protected abstract void executeOperation(IFileStore fileStore, IGui gui, PlayerPosition position) throws Exception;
+}

src/main/java/me/bionicbeanie/mods/impl/FileStore.java

@@ -15,6 +15,7 @@ import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 
 import me.bionicbeanie.mods.api.IFileStore;
+import me.bionicbeanie.mods.model.ModData;
 import me.bionicbeanie.mods.model.PlayerPosition;
 
 public class FileStore implements IFileStore {
@@ -26,10 +27,7 @@ public class FileStore implements IFileStore {
     private Gson gson;
 
     public FileStore(String baseDir) {
-        this.gson = new GsonBuilder()
+        this.gson = new GsonBuilder().setPrettyPrinting().setLenient().create();
-                .setPrettyPrinting()
-                .setLenient()
-                .create();
         this.saveFilePath = Paths.get(baseDir, DEFAULT_DIR, DEFAULT_FILE);
 
         try {
@@ -43,15 +41,28 @@ public class FileStore implements IFileStore {
     }
 
     @Override
-    public List<PlayerPosition> list() throws IOException {
+    public String getDefaultWorld() throws IOException {
-        List<String> lines = Files.readAllLines(saveFilePath);
+        ModData data = load();
-        PlayerPosition[] positions = gson.fromJson(String.join("", lines), PlayerPosition[].class);
         
+        return data.defaultWorldName;
+    }
+
+    @Override
+    public void setDefaultWorld(String defaultWorldName) throws IOException {
+        ModData data = load();
+        data.defaultWorldName = defaultWorldName;
+
+        dump(data);
+    }
+
+    @Override
+    public List<PlayerPosition> list() throws IOException {
+        ModData data = load();
         List<PlayerPosition> playerPositionList = new LinkedList<>();
 
-        if (positions != null) {
+        if (data.positions != null) {
-            for (int i = 0; i < positions.length; ++i) {
+            for (int i = 0; i < data.positions.length; ++i) {
-                playerPositionList.add(positions[i]);
+                playerPositionList.add(data.positions[i]);
             }
         }
 
@@ -60,25 +71,45 @@ public class FileStore implements IFileStore {
 
     @Override
     public void save(PlayerPosition position) throws IOException {
-
         List<PlayerPosition> playerPositions = list();
+        playerPositions.removeIf(p -> StringUtils.equalsIgnoreCase(position.getId(), p.getId()));
         playerPositions.add(position);
 
-        saveAll(playerPositions);
+        savePositions(playerPositions);
     }
 
     @Override
     public void delete(String id) throws IOException {
-
         List<PlayerPosition> playerPositions = list();
         playerPositions.removeIf(p -> StringUtils.equalsIgnoreCase(id, p.getId()));
-        
+        savePositions(playerPositions);
-        saveAll(playerPositions);
     }
 
-    private void saveAll(List<PlayerPosition> playerPositions) throws IOException {
+    private void dump(ModData data) throws IOException {
-        String serialized = gson.toJson(playerPositions.toArray());
+        String serialized = gson.toJson(data);
         Files.write(saveFilePath, serialized.getBytes(), StandardOpenOption.TRUNCATE_EXISTING);
     }
 
+    private void savePositions(List<PlayerPosition> playerPositions) throws IOException {
+        ModData data = load();
+        data.positions = playerPositions.toArray(new PlayerPosition[playerPositions.size()]);
+        dump(data);
+    }
+
+    private ModData load() throws IOException {
+        List<String> lines = Files.readAllLines(saveFilePath);
+        try {
+            return gson.fromJson(String.join("", lines), ModData.class);
+        } catch (Exception e) {
+            // Fallback for old versions
+            ModData data = new ModData();
+            data.defaultWorldName = "";
+            data.positions = gson.fromJson(String.join("", lines), PlayerPosition[].class);
+
+            dump(data);
+
+            return data;
+        }
+    }
+
 }

src/main/java/me/bionicbeanie/mods/model/ModData.java

@@ -0,0 +1,8 @@
+package me.bionicbeanie.mods.model;
+
+public class ModData {
+
+    public String defaultWorldName;
+    
+    public PlayerPosition[] positions;
+}

src/main/java/me/bionicbeanie/mods/model/PlayerPosition.java

@@ -1,35 +1,18 @@
 package me.bionicbeanie.mods.model;
 
-public class PlayerPosition {
+public class PlayerPosition extends PlayerRawPosition {
 
-    private PlayerRawPosition rawPosition;
     private String id, locationName;
     private PositionMetadata positionMetadata;
 
     public PlayerPosition(String id, PlayerRawPosition rawPosition, String locationName,
             PositionMetadata positionMetadata) {
+        super(rawPosition.getX(), rawPosition.getY(), rawPosition.getZ(), rawPosition.getWorldDimension());
         this.id = id;
-        this.rawPosition = rawPosition;
         this.positionMetadata = positionMetadata;
         this.locationName = locationName;
     }
 
-    public long getX() {
-        return rawPosition.getX();
-    }
-
-    public long getY() {
-        return rawPosition.getY();
-    }
-
-    public long getZ() {
-        return rawPosition.getZ();
-    }
-
-    public String getWorldDimension() {
-        return rawPosition.getWorldDimension();
-    }
-
     public String getLocationName() {
         return locationName;
     }
@@ -41,4 +24,10 @@ public class PlayerPosition {
     public String getId() {
         return id;
     }
+
+    @Override
+    public String toString() {
+        return this.locationName + " in [ " + this.getWorldDimension() + " ] at [ " + this.getX() + ", " + this.getY()
+                + ", " + this.getZ() + " ]";
+    }
 }

src/main/java/me/bionicbeanie/mods/model/PlayerRawPosition.java

@@ -27,4 +27,9 @@ public class PlayerRawPosition {
         return worldDimension;
     }
 
+    @Override
+    public String toString() {
+        return "I'm in [ " + worldDimension + " ] at [ " + x + ", " + y + ", " + z + " ]";
+    }
+
 }

src/main/java/me/bionicbeanie/mods/model/PositionMetadata.java

@@ -1,25 +1,44 @@
 package me.bionicbeanie.mods.model;
 
-import java.util.Date;
+import java.time.LocalDateTime;
 
 public class PositionMetadata {
 
     private String worldName, notes;
-    private Date created, lastModified;
+    private LocalDateTime created, lastModified;
+
+    public PositionMetadata(String worldName, String notes) {
+        this.worldName = worldName;
+        this.notes = notes;
+        this.created = LocalDateTime.now();
+        this.lastModified = this.created;
+    }
 
     public String getWorldName() {
         return worldName;
     }
 
+    public void setWorldName(String worldName) {
+        this.worldName = worldName;
+    }
+
     public String getNotes() {
         return notes;
     }
 
-    public Date getCreated() {
+    public void setNotes(String notes) {
+        this.notes = notes;
+    }
+
+    public LocalDateTime getCreated() {
         return created;
     }
 
-    public Date getLastModified() {
+    public LocalDateTime getLastModified() {
         return lastModified;
     }
+
+    public void updateLastModified() {
+        this.lastModified = LocalDateTime.now();
+    }
 }

src/main/java/me/bionicbeanie/mods/util/DimensionSpriteUtil.java

@@ -13,7 +13,10 @@ public class DimensionSpriteUtil {
     public static Identifier CreateWorldIconIdentifier(String dimension) {
         String dimensionItem = "netherite_ingot";
 
-        if (dimension.contains("overworld")) {
+        if(dimension == null) {
+            dimensionItem = "barrier";
+        }
+        else if (dimension.contains("overworld")) {
             dimensionItem = "totem_of_undying";
         } else if (dimension.contains("end")) {
             dimensionItem = "ender_eye";