package com.tll.client.validate;
import com.tll.client.ui.field.FieldErrorHandler;
import com.tll.client.ui.msg.IMsgDisplay;
import com.tll.client.ui.msg.MsgPopupRegistry;
/**
* ErrorHandlerBuilder - Builds {@link IErrorHandler} instances based on desired
* modes of validation feedback.
* @author jpk
*/
public abstract class ErrorHandlerBuilder {
/**
* Assembles an appropriate {@link IErrorHandler} in the form of an {@link ErrorHandlerDelegate}.
* @param billboard include global (billboard) error display?
* <em><code>msgDisplay</code> must be specified</em>
* @param field include local field error feedback?
* @param msgDisplay msg display implmentation. May be <code>null</code>.
* providing field validation feedback
* @return A new {@link IErrorHandler} impl instance.
*/
public static ErrorHandlerDelegate build(boolean billboard, boolean field, IMsgDisplay msgDisplay) {
FieldErrorHandler feh = null;
BillboardValidationFeedback bvf = null;
if(billboard && msgDisplay != null) {
bvf = new BillboardValidationFeedback(msgDisplay);
}
if(field) {
feh = new FieldErrorHandler(new MsgPopupRegistry());
}
if(feh != null && bvf != null) {
return new ErrorHandlerDelegate(bvf, feh);
}
if(feh != null) return new ErrorHandlerDelegate(feh);
if(bvf != null) return new ErrorHandlerDelegate(bvf);
throw new IllegalArgumentException("No error handelr built");
}
}