package org.litesoft.GWT.client.widgets;

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

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

public class FGImageButton extends SimplePanel implements OnBrowserEventListenable
{
    public static void prefetchImages()
    {
        // Image.prefetch( "common/images/misc/InfoIcon.cache.gif" );
    }

    // external assumptions
    protected static final String CSS_STYLE = "FGImageButton";

    private OurImage mImage;
    protected AbstractCssBackgroundButtonHelper mHelper;

    private ClickListener mClickListener = null;

    protected FGImageButton( String pURL, ClickListener pListener )
    {
        setWidget( mImage = new OurImage( pURL ) );
        if ( pListener != null )
        {
            sinkEvents( Event.ONCLICK );
            mClickListener = pListener;
        }
    }

    public FGImageButton( String pURL, String pEnabledToolTip, String pDisabledToolTip,
                          ClickListener pListener )
    {
        this( pURL, pListener );
        mHelper = new CssBackgroundImageButtonHelper( this, CSS_STYLE, "Button", pEnabledToolTip,
                                                      pDisabledToolTip ).updateForm();
    }

    public FGImageButton( String pURL, String pEnabledToolTip, ClickListener pListener )
    {
        this( pURL, pEnabledToolTip, "", pListener );
    }

    public void setEnabled( boolean pEnabled )
    {
        mHelper.setEnabled( pEnabled );
    }

    public void setUrl( String pUrl )
    {
        mImage.setUrl( pUrl );
    }

    public void setEnabledToolTip( String pEnabledToolTip )
    {
        mHelper.setEnabledToolTip( pEnabledToolTip );
    }

    private OnBrowserEventListener mListener = null;

    public Widget getOnBrowserEventListenableWidget()
    {
        return this;
    }

    public OnBrowserEventListener getOnBrowserEventListener()
    {
        return mListener;
    }

    public void setOnBrowserEventListener( int pEventBitsToAdd, OnBrowserEventListener pListener )
    {
        if ( null != (mListener = pListener) )
        {
            sinkEvents( pEventBitsToAdd );
        }
    }

    public void clearOnBrowserEventListener()
    {
        mListener = null;
    }

    public void onBrowserEvent( Event event )
    {
        if ( (Event.ONCLICK == DOM.eventGetType( event )) && (mClickListener != null) )
        {
            mClickListener.onClick( this );
            return;
        }
        if ( mListener != null )
        {
            if ( mListener.onBrowserEvent( event ) )
            {
                return;
            }
        }
        super.onBrowserEvent( event );
    }
}