// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.GWT.forms.client.nonpublic;

import java.io.*;

public interface FormAttributeAdapter extends FormComponentAdapter
{
    public static final FormAttributeAdapter[] EMPTY_ARRAY = new FormAttributeAdapter[0];

    public Integer getUniqueID();

    String getAttributeReference();

    boolean isErrorState();

    String getErrorText();

    /**
     * @param pError if null means No Error
     */
    void setErrorText( String pError );

    boolean isChangedState();

    Serializable getBaseValue();

    void setBaseValue( Serializable pBaseValue );

    Serializable getCurrentValue();

    void setCurrentValue( Serializable pCurrentValue );

    String getUserValue();

    void setUserValue( String pValue );

    void publishAnyPendingChanges();

    void updateValidOptions( Serializable[] pValidOptions );

    interface BooleanValueAccessor
    {
        boolean isBooleanValue( FormAttributeAdapter pAttributeAdapter );
    }

    public static final BooleanValueAccessor CHANGED = new BooleanValueAccessor()
    {
        public boolean isBooleanValue( FormAttributeAdapter pAttributeAdapter )
        {
            return pAttributeAdapter.isChangedState();
        }
    };

    public static final BooleanValueAccessor ERRORED = new BooleanValueAccessor()
    {
        public boolean isBooleanValue( FormAttributeAdapter pAttributeAdapter )
        {
            boolean error = pAttributeAdapter.isErrorState();
            if ( error )
            {
                LOGGER.trace.log( "HasError: ", pAttributeAdapter );
            }
            return error;
        }
    };

    public class Helper
    {
        public static FormAttributeAdapter[] append( FormAttributeAdapter[] pOrig, FormAttributeAdapter pNew )
        {
            FormAttributeAdapter[] newArray = new FormAttributeAdapter[pOrig.length + 1];
            int i = 0;
            for ( ; i < pOrig.length; i++ )
            {
                newArray[i] = pOrig[i];
            }
            newArray[i] = pNew;
            return newArray;
        }
    }
}