Adds PreCreateEvent for API

src/main/java/world/bentobox/bentobox/api/events/island/IslandEvent.java

@@ -50,6 +50,12 @@ public class IslandEvent extends IslandBaseEvent {
          * @since 1.1
          */
         BAN,
+        /**
+         * Fired when a player tries to create a new island. If canceled will
+         * proceed no further.
+         * @since 1.15.1
+         */
+        PRECREATE,
         /**
          * Called when a player has been allocated a new island spot
          * but before the island itself has been pasted or the player teleported.
@@ -220,6 +226,18 @@ public class IslandEvent extends IslandBaseEvent {
         }
     }
 
+    /**
+     * Fired when attempting to make a new island.
+     * May be cancelled. No island object exists at this point.
+     * @since 1.15.1
+     */
+    public static class IslandPreCreateEvent extends IslandBaseEvent {
+        private IslandPreCreateEvent(UUID player) {
+            // Final variables have to be declared in the constructor
+            super(null, player, false, null);
+        }
+    }
+    
     /**
      * Fired when an island is going to be created.
      * May be cancelled.
@@ -681,6 +699,10 @@ public class IslandEvent extends IslandBaseEvent {
                 IslandBanEvent ban = new IslandBanEvent(island, player, admin, location);
                 Bukkit.getPluginManager().callEvent(ban);
                 return ban;
+            case PRECREATE:
+                IslandPreCreateEvent precreate = new IslandPreCreateEvent(player);
+                Bukkit.getPluginManager().callEvent(precreate);
+                return precreate;
             case CREATE:
                 IslandCreateEvent create = new IslandCreateEvent(island, player, admin, location, blueprintBundle);
                 Bukkit.getPluginManager().callEvent(create);

src/main/java/world/bentobox/bentobox/managers/island/NewIsland.java

@@ -48,7 +48,15 @@ public class NewIsland {
         if (this.locationStrategy == null) {
             this.locationStrategy = new DefaultNewIslandLocationStrategy();
         }
-
+        // Fire pre-create event
+        IslandBaseEvent event = IslandEvent.builder()
+                .involvedPlayer(user.getUniqueId())
+                .reason(Reason.PRECREATE)
+                .build();
+        if (event.isCancelled()) {
+            // Do nothing
+            return;
+        }
         newIsland(builder.oldIsland2);
     }
 

src/test/java/world/bentobox/bentobox/managers/island/NewIslandTest.java

@@ -6,6 +6,7 @@ import static org.mockito.ArgumentMatchers.anyBoolean;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
@@ -197,7 +198,7 @@ public class NewIslandTest {
         verify(im).save(eq(island));
         verify(island).setFlagsDefaults();
         verify(scheduler).runTask(any(BentoBox.class), any(Runnable.class));
-        verify(builder).build();
+        verify(builder, times(2)).build();
         verify(bpb).getUniqueId();
         verify(ice).getBlueprintBundle();
         verify(pm).setDeaths(eq(world), eq(uuid), eq(0));
@@ -205,7 +206,7 @@ public class NewIslandTest {
         verify(pm).clearHomeLocations(eq(world), any(UUID.class));
         verify(island).setProtectionRange(eq(20));
     }
-
+    
     /**
      * Test method for {@link world.bentobox.bentobox.managers.island.NewIsland#builder()}.
      * @throws Exception
@@ -218,7 +219,7 @@ public class NewIslandTest {
         verify(im).save(eq(island));
         verify(island).setFlagsDefaults();
         verify(scheduler).runTask(any(BentoBox.class), any(Runnable.class));
-        verify(builder).build();
+        verify(builder, times(2)).build();
         verify(bpb).getUniqueId();
         verify(ice, never()).getBlueprintBundle();
         verify(ire).getBlueprintBundle();
@@ -238,7 +239,7 @@ public class NewIslandTest {
         verify(im).save(eq(island));
         verify(island).setFlagsDefaults();
         verify(scheduler).runTask(any(BentoBox.class), any(Runnable.class));
-        verify(builder).build();
+        verify(builder, times(2)).build();
         verify(bpb).getUniqueId();
         verify(ice).getBlueprintBundle();
         verify(pm).setDeaths(eq(world), eq(uuid), eq(0));
@@ -257,7 +258,7 @@ public class NewIslandTest {
         verify(im).save(eq(island));
         verify(island).setFlagsDefaults();
         verify(bpm).paste(eq(addon), eq(island), eq(NAME), any(Runnable.class));
-        verify(builder).build();
+        verify(builder, times(2)).build();
         verify(bpb).getUniqueId();
         verify(ice).getBlueprintBundle();
         verify(pm).setDeaths(eq(world), eq(uuid), eq(0));
@@ -277,7 +278,7 @@ public class NewIslandTest {
         verify(im).save(eq(island));
         verify(island).setFlagsDefaults();
         verify(scheduler).runTask(any(BentoBox.class), any(Runnable.class));
-        verify(builder).build();
+        verify(builder, times(2)).build();
         verify(bpb).getUniqueId();
         verify(ice).getBlueprintBundle();
         verify(pm).setDeaths(eq(world), eq(uuid), eq(0));
@@ -300,7 +301,7 @@ public class NewIslandTest {
         verify(im).save(eq(island));
         verify(island).setFlagsDefaults();
         verify(scheduler).runTask(any(BentoBox.class), any(Runnable.class));
-        verify(builder).build();
+        verify(builder, times(2)).build();
         verify(bpb).getUniqueId();
         verify(ice).getBlueprintBundle();
         verify(pm).setDeaths(eq(world), eq(uuid), eq(0));
@@ -323,7 +324,7 @@ public class NewIslandTest {
         verify(im).save(eq(island));
         verify(island).setFlagsDefaults();
         verify(scheduler).runTask(any(BentoBox.class), any(Runnable.class));
-        verify(builder).build();
+        verify(builder, times(2)).build();
         verify(bpb).getUniqueId();
         verify(ice).getBlueprintBundle();
         verify(pm).setDeaths(eq(world), eq(uuid), eq(0));