package bluej.views;

import threadchecker.OnThread;
import threadchecker.Tag;

import java.lang.reflect.Modifier;
import java.util.function.Predicate;




| A View Filter specifying whether, for a given method,
| it should be included in an operation.  The two configurable
| parts are static methods or instance methods, and public-only
| vs package-private&protected&public.
|
@OnThread(Tag.FXPlatform)
public final class ViewFilter implements Predicate<MemberView>{    
   public static enum StaticOrInstance { STATIC, INSTANCE; 
   }
    
   
private final StaticOrInstance staticOrInstance;
   


private final String callingPackage;

   



| Create a View filter.
| @param staticOrInstance Do you want only-static, or only-instance?
| @param callingPackage Show only items callable from another class in the given package.
|                       If null, only show public items.
|
public ViewFilter(StaticOrInstance staticOrInstance, String callingPackage)
   {        
   this.staticOrInstance = staticOrInstance;
       
   this.callingPackage = callingPackage;     
   }
    
   
@Override
@OnThread(value = Tag.FXPlatform, ignoreParent = true)
   
public boolean test(MemberView member)
   {        
   boolean wantStatic = staticOrInstance == StaticOrInstance.STATIC;
   boolean isStatic = member.isStatic();
       
   
   if (wantStatic != isStatic)
           
   return false;
        
       
   
   if ((member.getModifiers() & Modifier.PUBLIC) != 0)
           
   return true;
   
   boolean samePackage = member.getDeclaringView().getPackageName().equals(callingPackage);
   if (!samePackage)
           
   return false;
       
   
   return (member.getModifiers() & Modifier.PRIVATE) == 0;     
   } 
}