isEnabled(UIContext) is final and delegates to isEnabled(ShellContext)

to ensure shell-only behavior

shell/api/src/main/java/org/jboss/forge/addon/shell/ui/AbstractShellCommand.java

@@ -21,15 +21,15 @@
 public abstract class AbstractShellCommand extends AbstractUICommand
 {
    @Override
-   public boolean isEnabled(UIContext context)
+   public Metadata getMetadata()
    {
-      return context instanceof ShellContext;
+      return super.getMetadata().category(Categories.create("Shell"));
    }
 
    @Override
-   public Metadata getMetadata()
+   public final boolean isEnabled(UIContext context)
    {
-      return super.getMetadata().category(Categories.create("Shell"));
+      return (context instanceof ShellContext) && isEnabled((ShellContext) context);
    }
 
    @Override
@@ -38,5 +38,11 @@ public final Result execute(UIContext context) throws Exception
       return execute((ShellContext) context);
    }
 
+   // This method is meant to be overriden
+   public boolean isEnabled(ShellContext context)
+   {
+      return true;
+   }
+
    public abstract Result execute(ShellContext shellContext) throws Exception;
 }