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

import org.litesoft.GWT.client.widgets.Button;
import org.litesoft.GWT.client.widgets.nonpublic.*;

import com.google.gwt.event.dom.client.*;
import com.google.gwt.user.client.ui.*;

public abstract class ExtendableDialogPicker extends DialogBox implements ClickHandler
{
    private DialogButtonPanel mDialogButtonPanel;

    protected ExtendableDialogPicker()
    {
        super( true, false );
        VerticalPanel panel = new VerticalPanel();
        panel.setHorizontalAlignment( HasHorizontalAlignment.ALIGN_CENTER );
        setWidget( panel ); // actually set into the FlexTable
    }

    protected final void addExtensionPanel( Widget pExtensionPanel )
    {
        if ( pExtensionPanel != null )
        {
            ((VerticalPanel) getWidget()).add( pExtensionPanel );
        }
    }

    protected final void addDialogButtonPanel( Button... pButtons )
    {
        addExtensionPanel( mDialogButtonPanel = new DialogButtonPanel( this, pButtons ) );
    }

    @Override
    public void onClick( ClickEvent event )
    {
        onClick( (Widget) event.getSource() );
    }

    public final void onClick( Widget sender )
    {
        if ( (mDialogButtonPanel != null) && mDialogButtonPanel.isOurButton( sender ) )
        {
            dialogButtonClicked( (Button) sender );
        }
    }

    abstract protected void dialogButtonClicked( Button pButton );

    @Override
    public void show()
    {
        CommonElementHelper.hide( getElement() );
        super.show();
        CommonElementHelper.unhide( getElement() );
    }
}