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

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

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

public class TransparentImageSpacer extends AbstractBrowserEventListenableWidget {
    private String mHeightSet = null;
    private String mWidthSet = null;

    public TransparentImageSpacer( int pWidthAndHeight ) {
        setElement( DOM.createImg() );
        CommonElementHelper.setImgSrc( getElement(), TransparentImage.URL );
        //noinspection GWTStyleCheck
        setStyleName( "LayoutSpacer" );

        width( pWidthAndHeight );
        height( pWidthAndHeight );
    }

    public TransparentImageSpacer() {
        this( 1 );
    }

    /**
     * Calling this method eliminates the ability to set width via css class
     */
    public TransparentImageSpacer width( int pPixels ) {
        String newWidth = "" + pPixels;
        if ( !newWidth.equals( mWidthSet ) ) {
            setWidth( mWidthSet = newWidth );
        }
        return (mHeightSet != null) ? this : height( 1 );
    }

    /**
     * Calling this method eliminates the ability to set height via css class
     */
    public TransparentImageSpacer height( int pPixels ) {
        String newHeight = "" + pPixels;
        if ( !newHeight.equals( mHeightSet ) ) {
            setHeight( mHeightSet = newHeight );
        }
        return (mWidthSet != null) ? this : width( 1 );
    }

    public TransparentImageSpacer style( String pStyle ) {
        addStyleName( pStyle );
        return this;
    }
}