package org.litesoft.GWT.forms.client.components.factories.input;

import com.google.gwt.user.client.ui.*;
import org.litesoft.GWT.forms.client.components.factories.*;
import org.litesoft.GWT.forms.client.components.impls.input.*;
import org.litesoft.GWT.forms.client.nonpublic.*;
import org.litesoft.core.simpletypes.boxers.*;
import org.litesoft.core.util.*;
import org.litesoft.rpcpassable.*;
import org.litesoft.ui.def.nonpublic.*;
import org.litesoft.ui.def.nonpublic.support.*;
import org.litesoft.uispecification.*;

public class UiCheckBoxWidgetFactory implements InputWidgetFactory
{
    public Widget create( FormInstanceComponentHandler pComponentHandler, //
                          UiInputDef pUiDef, AttributeMetaData pMetaData,
                          boolean pHasHorizontalPeer )
    {
        CheckBoxMetaData zMD = (CheckBoxMetaData) pMetaData;

        String zLabelText = !pUiDef.isLabelLess() ? zMD.getExternalText() : null;
        UiFont zLabelFont = pUiDef.getLabelFont();
        String zTooltip = zMD.getTooltip();

        // Todo: Hint for Alignment?
        FormCheckBox zFC = new FormCheckBox( zLabelText, zLabelFont, zTooltip, pHasHorizontalPeer );

        return new MyFormAdapter( pComponentHandler, zMD, zFC ).init();
    }

    private static final class MyFormAdapter extends AbstractFormAttributeAdapter
    {
        public MyFormAdapter( FormInstanceComponentHandler pComponentHandler, //
                              CheckBoxMetaData pMD, FormCheckBox pFC )
        {
            super( pComponentHandler, pMD, pFC );
        }

        protected void publishChangedState( boolean pChangedState )
        {
            super.publishChangedState( pChangedState );
            optionallyPublishUpdatedValue();
        }

        protected RPCpassable convertComponentValueToSendable( Object pValue )
        {
            return new BoxedBoolean( (Boolean) pValue );
        }

        protected Object convertSendableToComponentValue( RPCpassable pValue )
        {
            return (pValue instanceof BoxedBoolean) &&
                   Boolean.TRUE.equals( ((BoxedBoolean) pValue).getBoxedValue() );
        }

        protected String convertComponentValueToString( Object pValue )
        {

            return (pValue == null) ? "null" : "" + pValue;
        }

        protected Object convertStringToComponentValue( String pValue )
        {
            return !"null".equals( pValue ) ? UtilsCommon.toBoolean( pValue ) : null;
        }
    }
}