Add Flag.getDefault(). Breaks StateFlag.getDefault() calls.

src/main/java/com/sk89q/worldguard/protection/FailedLoadRegionSet.java

@@ -24,7 +24,6 @@
 import com.sk89q.worldguard.protection.association.RegionAssociable;
 import com.sk89q.worldguard.protection.flags.Flag;
 import com.sk89q.worldguard.protection.flags.StateFlag;
-import com.sk89q.worldguard.protection.flags.StateFlag.State;
 import com.sk89q.worldguard.protection.regions.ProtectedRegion;
 
 import javax.annotation.Nullable;
@@ -58,11 +57,7 @@ public boolean testBuild(RegionAssociable subject, StateFlag... flags) {
     @Nullable
     @Override
     public <V> V queryValue(@Nullable RegionAssociable subject, Flag<V> flag) {
-        if (flag instanceof StateFlag) {
+        return flag.getDefault();
-            return ((StateFlag) flag).getDefault() ? (V) State.DENY : (V) State.ALLOW; // Inverse default
-        } else {
-            return null;
-        }
     }
 
     @Override

src/main/java/com/sk89q/worldguard/protection/FlagValueCalculator.java

@@ -379,10 +379,10 @@ public <V> Collection<V> queryAllValues(@Nullable RegionAssociable subject, Flag
 
         if (consideredValues.isEmpty()) {
             if (flag instanceof StateFlag) {
-                //noinspection unchecked
+                V fallback = flag.getDefault();
-                return (Collection<V>) (((StateFlag) flag).getDefault()
+                return fallback != null
-                        ? ImmutableList.of(State.ALLOW)
+                        ? ImmutableList.of(fallback)
-                        : ImmutableList.of());
+                        : (Collection<V>) ImmutableList.of();
             }
         }
 

src/main/java/com/sk89q/worldguard/protection/PermissiveRegionSet.java

@@ -24,7 +24,6 @@
 import com.sk89q.worldguard.protection.association.RegionAssociable;
 import com.sk89q.worldguard.protection.flags.Flag;
 import com.sk89q.worldguard.protection.flags.StateFlag;
-import com.sk89q.worldguard.protection.flags.StateFlag.State;
 import com.sk89q.worldguard.protection.regions.ProtectedRegion;
 
 import javax.annotation.Nullable;
@@ -58,11 +57,7 @@ public boolean testBuild(RegionAssociable subject, StateFlag... flags) {
     @Nullable
     @Override
     public <V> V queryValue(@Nullable RegionAssociable subject, Flag<V> flag) {
-        if (flag instanceof StateFlag) {
+        return flag.getDefault();
-            return ((StateFlag) flag).getDefault() ? (V) State.ALLOW : null;
-        } else {
-            return null;
-        }
     }
 
     @Override

src/main/java/com/sk89q/worldguard/protection/flags/Flag.java

@@ -51,6 +51,16 @@ public String getName() {
         return name;
     }
 
+    /**
+     * Get the default value.
+     *
+     * @return the default value, if one exists, otherwise {@code null} may be returned
+     */
+    @Nullable
+    public T getDefault() {
+        return null;
+    }
+
     @Nullable
     public T chooseValue(Collection<T> values) {
         if (!values.isEmpty()) {

src/main/java/com/sk89q/worldguard/protection/flags/RegionGroupFlag.java

@@ -38,6 +38,7 @@ public RegionGroupFlag(String name, RegionGroup def) {
         this.def = def;
     }
 
+    @Override
     public RegionGroup getDefault() {
         return def;
     }

src/main/java/com/sk89q/worldguard/protection/flags/StateFlag.java

@@ -48,8 +48,9 @@ public StateFlag(String name, boolean def) {
         this.def = def;
     }
 
-    public boolean getDefault() {
+    @Override
-        return def;
+    public State getDefault() {
+        return def ? State.ALLOW : null;
     }
 
     @Override

src/main/java/com/sk89q/worldguard/protection/flags/StringFlag.java

@@ -23,18 +23,40 @@
 
 import com.sk89q.worldguard.bukkit.WorldGuardPlugin;
 
+import javax.annotation.Nullable;
+
 /**
  *
  * @author sk89q
  */
 public class StringFlag extends Flag<String> {
 
-    public StringFlag(String name, RegionGroup defaultGroup) {
+    private final String defaultValue;
-        super(name, defaultGroup);
-    }
 
     public StringFlag(String name) {
         super(name);
+        this.defaultValue = null;
+    }
+
+    public StringFlag(String name, String defaultValue) {
+        super(name);
+        this.defaultValue = defaultValue;
+    }
+
+    public StringFlag(String name, RegionGroup defaultGroup) {
+        super(name, defaultGroup);
+        this.defaultValue = null;
+    }
+
+    public StringFlag(String name, RegionGroup defaultGroup, String defaultValue) {
+        super(name, defaultGroup);
+        this.defaultValue = defaultValue;
+    }
+
+    @Nullable
+    @Override
+    public String getDefault() {
+        return defaultValue;
     }
 
     @Override