Enables blueprint bundle slot positioning in GUI

https://github.com/BentoBoxWorld/BentoBox/issues/708

src/main/java/world/bentobox/bentobox/api/panels/builders/PanelBuilder.java

@@ -8,6 +8,11 @@ import world.bentobox.bentobox.api.panels.PanelItem;
 import world.bentobox.bentobox.api.panels.PanelListener;
 import world.bentobox.bentobox.api.user.User;
 
+/**
+ * Builds panels
+ * @author tastybento
+ *
+ */
 public class PanelBuilder {
     private String name;
     private TreeMap<Integer, PanelItem> items = new TreeMap<>();
@@ -79,11 +84,29 @@ public class PanelBuilder {
     }
 
     /**
-     * Get the next free slot number after the largest slot
+     * Get the next free slot number after the largest slot. If larger than the size of the panel, the first free spot available
+     * is used.
      * @return next slot number, or -1 in case none has been found.
      */
     public int nextSlot() {
-        return items.isEmpty() ? 0 : items.lastKey() + 1;
+        int slot = items.isEmpty() ? 0 : items.lastKey() + 1;
+        if (slot >= size) {
+            return getFirstAvailableSlot();
+        }
+        return slot;
+    }
+
+    /**
+     * Get the first available slot
+     * @return slot or -1 if panel is full
+     */
+    public int getFirstAvailableSlot() {
+        for (int i = 0; i < size; i++) {
+            if (!slotOccupied(i)) {
+                return i;
+            }
+        }
+        return -1;
     }
 
     /**

src/main/java/world/bentobox/bentobox/blueprints/dataobjects/BlueprintBundle.java

@@ -1,16 +1,18 @@
 package world.bentobox.bentobox.blueprints.dataobjects;
 
-import com.google.gson.annotations.Expose;
-import org.bukkit.Material;
-import org.bukkit.World;
-import world.bentobox.bentobox.blueprints.Blueprint;
-import world.bentobox.bentobox.database.objects.DataObject;
-
 import java.util.ArrayList;
 import java.util.EnumMap;
 import java.util.List;
 import java.util.Map;
 
+import org.bukkit.Material;
+import org.bukkit.World;
+
+import com.google.gson.annotations.Expose;
+
+import world.bentobox.bentobox.blueprints.Blueprint;
+import world.bentobox.bentobox.database.objects.DataObject;
+
 /**
  * Represents a bundle of three {@link Blueprint}s.
  * This is what the player will choose when creating his island.
@@ -52,6 +54,15 @@ public class BlueprintBundle implements DataObject {
      */
     @Expose
     private Map<World.Environment, String> blueprints = new EnumMap<>(World.Environment.class);
+
+    /**
+     * Preferred slot in GUI.
+     */
+    @Expose
+    private int slot = 0;
+
+
+
     /**
      * @return the uniqueId
      */
@@ -164,5 +175,17 @@ public class BlueprintBundle implements DataObject {
     public void setRequirePermission(boolean requirePermission) {
         this.requirePermission = requirePermission;
     }
+    /**
+     * @return the slot
+     */
+    public int getSlot() {
+        return slot;
+    }
+    /**
+     * @param slot the slot to set
+     */
+    public void setSlot(int slot) {
+        this.slot = slot;
+    }
 
 }

src/main/java/world/bentobox/bentobox/panels/BlueprintManagementPanel.java

@@ -2,6 +2,7 @@ package world.bentobox.bentobox.panels;
 
 import java.util.AbstractMap;
 import java.util.ArrayList;
+import java.util.Comparator;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -47,6 +48,7 @@ public class BlueprintManagementPanel {
     private final Map<World.Environment, Blueprint> ENV_TO_BP;
     private static final int MAX_WORLD_SLOT = 9;
     private static final int MIN_WORLD_SLOT = 0;
+    public static final int MAX_BP_SLOT = 35;
     private Entry<Integer, Blueprint> selected;
     private Map<Integer, Blueprint> blueprints = new HashMap<>();
     private final User user;
@@ -80,13 +82,18 @@ public class BlueprintManagementPanel {
         // Create the panel
         PanelBuilder pb = new PanelBuilder().name(t("title")).user(user).size(45);
         // Get the bundles
+        Comparator<BlueprintBundle> sortByDisplayName = (p, o) -> p.getDisplayName().compareToIgnoreCase(o.getDisplayName());
         plugin.getBlueprintsManager().getBlueprintBundles(addon).values().stream().limit(36)
-        .forEach(bb -> pb.item(new PanelItemBuilder()
+        .sorted(sortByDisplayName)
+        .forEach(bb -> {
+            // Make item
+            PanelItem item = new PanelItemBuilder()
                     .name(bb.getDisplayName())
                     .description(t("edit"),
                             !bb.getUniqueId().equals(BlueprintsManager.DEFAULT_BUNDLE_NAME) ? t("rename") : "")
                     .icon(bb.getIcon())
                     .clickHandler((panel, u, clickType, slot) -> {
+
                         u.closeInventory();
                         if (clickType.equals(ClickType.RIGHT) && !bb.getUniqueId().equals(BlueprintsManager.DEFAULT_BUNDLE_NAME)) {
                             // Rename
@@ -96,7 +103,22 @@ public class BlueprintManagementPanel {
                         }
                         return true;
                     })
-                .build()));
+                    .build();
+            // Determine slot
+            if (bb.getSlot() < 0 || bb.getSlot() > MAX_BP_SLOT) {
+                bb.setSlot(0);
+            }
+            if (pb.slotOccupied(bb.getSlot())) {
+                int slot = pb.getFirstAvailableSlot();
+                if (slot == -1) {
+                    // TODO add paging
+                    plugin.logError("Too many blueprint bundles to show!");
+                }
+                pb.item(slot, item);
+            } else {
+                pb.item(bb.getSlot(), item);
+            }
+        });
 
         // Panel has New Blueprint Bundle button - clicking in creates a new bundle
         pb.item(36, getNewBundle(user, addon));
@@ -134,8 +156,10 @@ public class BlueprintManagementPanel {
             // Toggle permission - default is always allowed
             pb.item(39, getPermissionIcon(addon, bb));
         }
+        // Preferred slot
+        pb.item(40, getSlotIcon(addon, bb));
         // Panel has a Back icon.
-        pb.item(44, new PanelItemBuilder().icon(Material.ARROW).name(t("back")).clickHandler((panel, u, clickType, slot) -> {
+        pb.item(44, new PanelItemBuilder().icon(Material.OAK_DOOR).name(t("back")).clickHandler((panel, u, clickType, slot) -> {
             openPanel();
             return true;
         }).build());
@@ -144,6 +168,39 @@ public class BlueprintManagementPanel {
 
     }
 
+    /**
+     * Gets the preferred slot icon
+     * @param addon - addon
+     * @param bb - blueprint bundle
+     * @return slot panel item
+     */
+    private PanelItem getSlotIcon(GameModeAddon addon, BlueprintBundle bb) {
+        return new PanelItemBuilder()
+                .name(t("slot", TextVariables.NUMBER, String.valueOf(bb.getSlot())))
+                .description(t("slot-instructions"))
+                .icon(Material.IRON_TRAPDOOR)
+                .clickHandler((panel, u, clickType, slot) -> {
+                    // Increment or decrement slot
+                    if (clickType.isLeftClick()) {
+                        bb.setSlot(bb.getSlot() + 1);
+                        if (bb.getSlot() > MAX_BP_SLOT) {
+                            bb.setSlot(0);
+                        }
+                    } else if (clickType.isRightClick()) {
+                        bb.setSlot(bb.getSlot() - 1);
+                        if (bb.getSlot() < 0) {
+                            bb.setSlot(MAX_BP_SLOT);
+                        }
+                    }
+                    u.getPlayer().playSound(u.getLocation(), Sound.UI_BUTTON_CLICK, 1F, 1F);
+                    // Save
+                    plugin.getBlueprintsManager().saveBlueprintBundle(addon, bb);
+                    panel.getInventory().setItem(40, getSlotIcon(addon, bb).getItem());
+                    return true;
+                })
+                .build();
+    }
+
     /**
      * Gets the panel item for Blueprint Bundle
      * @param bb - blueprint bundle

src/main/java/world/bentobox/bentobox/panels/IslandCreationPanel.java

@@ -1,13 +1,16 @@
 package world.bentobox.bentobox.panels;
 
-import java.util.Collection;
 import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+import java.util.stream.Collectors;
 
 import org.eclipse.jdt.annotation.NonNull;
 
 import world.bentobox.bentobox.BentoBox;
 import world.bentobox.bentobox.api.addons.GameModeAddon;
 import world.bentobox.bentobox.api.commands.CompositeCommand;
+import world.bentobox.bentobox.api.panels.PanelItem;
 import world.bentobox.bentobox.api.panels.builders.PanelBuilder;
 import world.bentobox.bentobox.api.panels.builders.PanelItemBuilder;
 import world.bentobox.bentobox.api.user.User;
@@ -34,7 +37,9 @@ public class IslandCreationPanel {
         // Create the panel
         PanelBuilder pb = new PanelBuilder().name(user.getTranslation("commands.island.create.pick")).user(user);
         // Get the bundles
-        Collection<BlueprintBundle> bbs = plugin.getBlueprintsManager().getBlueprintBundles((@NonNull GameModeAddon) command.getAddon()).values();
+        Comparator<BlueprintBundle> sortByDisplayName = (p, o) -> p.getDisplayName().compareToIgnoreCase(o.getDisplayName());
+        List<BlueprintBundle> bbs = plugin.getBlueprintsManager().getBlueprintBundles((@NonNull GameModeAddon) command.getAddon()).values()
+                .stream().sorted(sortByDisplayName).collect(Collectors.toList());
         // Loop through them and create items in the panel
         for (BlueprintBundle bb : bbs) {
             String perm = command.getPermissionPrefix() + "island.create." + bb.getUniqueId();
@@ -42,12 +47,26 @@ public class IslandCreationPanel {
                     || !bb.isRequirePermission()
                     || user.hasPermission(perm)) {
                 // Add an item
-                pb.item(new PanelItemBuilder().name(bb.getDisplayName()).description(bb.getDescription())
+                PanelItem item = new PanelItemBuilder().name(bb.getDisplayName()).description(bb.getDescription())
                         .icon(bb.getIcon()).clickHandler((panel, user1, clickType, slot1) -> {
                             user1.closeInventory();
                             command.execute(user1, label, Collections.singletonList(bb.getUniqueId()));
                             return true;
-                        }).build());
+                        }).build();
+                // Determine slot
+                if (bb.getSlot() < 0 || bb.getSlot() > BlueprintManagementPanel.MAX_BP_SLOT) {
+                    bb.setSlot(0);
+                }
+                if (pb.slotOccupied(bb.getSlot())) {
+                    int slot = pb.getFirstAvailableSlot();
+                    if (slot == -1) {
+                        // TODO add paging
+                        plugin.logError("Too many blueprint bundles to show!");
+                    }
+                    pb.item(slot, item);
+                } else {
+                    pb.item(bb.getSlot(), item);
+                }
             }
         }
         pb.build();

src/main/resources/locales/en-US.yml

@@ -272,6 +272,10 @@ commands:
           default-color: ""
           success: "Success!"
           cancelling: "Cancelling"
+        slot: "&fPreferred Slot [number]"
+        slot-instructions: |
+          &aLeft click to increment
+          &aRight click to decrement
     resetflags:
       description: "Reset all islands to default flag settings in config.yml"
     world: