/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2008 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    http://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * FCKIcon Class: renders an icon from a single image, a strip or even a
 * spacer.
 */

var FCKIcon = function( iconPathOrStripInfoArray )
{
    var sTypeOf = iconPathOrStripInfoArray ? typeof( iconPathOrStripInfoArray ) : 'undefined' ;
    switch ( sTypeOf )
    {
        case 'number' :
            this.Path = FCKConfig.SkinPath + 'fck_strip.gif' ;
            this.Size = 16 ;
            this.Position = iconPathOrStripInfoArray ;
            break ;

        case 'undefined' :
            this.Path = FCK_SPACER_PATH ;
            break ;

        case 'string' :
            this.Path = iconPathOrStripInfoArray ;
            break ;

        default :
            // It is an array in the format [ StripFilePath, IconSize, IconPosition ]
            this.Path        = iconPathOrStripInfoArray[0] ;
            this.Size        = iconPathOrStripInfoArray[1] ;
            this.Position    = iconPathOrStripInfoArray[2] ;
    }
}

FCKIcon.prototype.CreateIconElement = function( document )
{
    var eIcon, eIconImage ;

    if ( this.Position )        // It is using an icons strip image.
    {
        var sPos = '-' + ( ( this.Position - 1 ) * this.Size ) + 'px' ;

        if ( FCKBrowserInfo.IsIE )
        {
            // <div class="TB_Button_Image"><img src="strip.gif" style="top:-16px"></div>

            eIcon = document.createElement( 'DIV' ) ;

            eIconImage = eIcon.appendChild( document.createElement( 'IMG' ) ) ;
            eIconImage.src = this.Path ;
            eIconImage.style.top = sPos ;
        }
        else
        {
            // <img class="TB_Button_Image" src="spacer.gif" style="background-position: 0px -16px;background-image: url(strip.gif);">

            eIcon = document.createElement( 'IMG' ) ;
            eIcon.src = FCK_SPACER_PATH ;
            eIcon.style.backgroundPosition    = '0px ' + sPos ;
            eIcon.style.backgroundImage        = 'url("' + this.Path + '")' ;
        }
    }
    else                    // It is using a single icon image.
    {
        if ( FCKBrowserInfo.IsIE )
        {
            // IE makes the button 1px higher if using the <img> directly, so we
            // are changing to the <div> system to clip the image correctly.
            eIcon = document.createElement( 'DIV' ) ;

            eIconImage = eIcon.appendChild( document.createElement( 'IMG' ) ) ;
            eIconImage.src = this.Path ? this.Path : FCK_SPACER_PATH ;
        }
        else
        {
            // This is not working well with IE. See notes above.
            // <img class="TB_Button_Image" src="smiley.gif">
            eIcon = document.createElement( 'IMG' ) ;
            eIcon.src = this.Path ? this.Path : FCK_SPACER_PATH ;
        }
    }

    eIcon.className = 'TB_Button_Image' ;

    return eIcon ;
}
