package org.litesoft.GWT.forms.client.components.nonpublic;

import java.util.*;

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

import org.litesoft.GWT.forms.client.components.nonpublic.datepicker.*;
import org.litesoft.GWT.forms.client.components.nonpublic.datepicker.impl.*;
import org.litesoft.GWT.client.widgets.nonpublic.*;
import org.litesoft.core.util.*;

/**
 * TODO: migrate to {@link com.google.gwt.user.datepicker.client.DatePicker}
 */
@SuppressWarnings({"deprecation"})
public abstract class ExtendableDatePicker extends DatePicker implements ClickHandler
{
    protected ExtendableDatePicker()
    {
        showAdjacentMonths( true );
        showYearMonthListing( true );
    }

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

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

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

    public final void showTodayButton( boolean show )
    {
        throw new IllegalStateException( "showTodayButton no longer supporter" );
    }

    private DialogButtonPanel mDialogButtonPanel;

    public final void onClick( Widget sender )
    {
        if ( sender instanceof DatePickerCell )
        {
            super.onClick( sender );
            if ( -1 == UtilsCommon.deNull( sender.getStyleName() ).indexOf( "control" ) )
            {
                dateSelectedByClick( selectedDate() );
            }
        }
        else if ( mDialogButtonPanel != null )
        {
            int zIndex = mDialogButtonPanel.findIndex( sender );
            if ( zIndex != -1 )
            {
                dialogButtonPanelClicked( zIndex );
            }
        }
    }

    abstract protected void dialogButtonPanelClicked( int pButtonIndex );

    abstract protected void dateSelectedByClick( Date pDate );

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