package bluej.stride.generic;

import java.util.List;




| A factory class for creating Frame objects of type T.
|
public interface FrameFactory<T extends Frame>{    
   


| Creates a frame (main factory method)
|
p.public T createBlock(InteractionManager editor);
    
   
   


| Creates a frame with the given contents.
| By default, throws an exception (override if you want to support this)
|
p.public default T createBlock(InteractionManager editor, List<Frame> contents)
   {        
      throw new IllegalArgumentException("Cannot create " + getBlockClass() + " with frame contents");     
      }
    
   
   


| Gets the class for type T (work-around for lack of reification)
|
Class<T> getBlockClass(); 
   }