/**
 * Generates a browser-specific Flash tag. Create a new instance, set whatever
 * properties you need, then call either toString() to get the tag as a string, or
 * call write() to write the tag out.
 *
 * The properties src, width, height and version are required when creating a new
 * instance of the FlashTag, but there are setters to let you change them, as well.
 * That way, if you want to render more than one piece of Flash content, you can do
 * so without creating a new instance of the tag.
 *
 * For more information on supported parameters, see:
 * http://www.macromedia.com/cfusion/knowledgebase/index.cfm?id=tn_12701
 */


/**
 * Creates a new instance of the FlashTag.
 * src: The path to the SWF file.
 * width: The width of your Flash content.
 * height: the height of your Flash content.
 * version: the required version of the Flash Player for the specified content.
 *
 * These are the only 4 properites that are required.
 */
function FlashTag(src, width, height, version)
{
    if (arguments.length < 4)
    {
        throw new Exception('RequiredAttributeException',
                            'You must pass in a src, width, height, and version when creating a FlashTag.');
    }

    for (var i = 0; i < arguments.length; ++i)
    {
        if (arguments[i] == undefined || arguments[i] == null)
        {
            throw new Exception('RequiredAttributeException',
                                'All constructor arguments must have values.');
        }
    }

    // Required
    this.src            =  src;
    this.width          =  width;
    this.height         =  height;
    this.version        =  version;

    this.id             =  null;
    this.flashVars      =  null;
    this.flashVarsStr   =  null;
    this.genericParam   = new Object();
    this.ie = (navigator.appName.indexOf ("Microsoft") != -1) ? 1 : 0;
}

/**
 * Specifies the location (URL) of the Flash content to be loaded.
 */
FlashTag.prototype.setSource = function(src)
{
    this.src = src; 
}

/**
 * Specifies the width of the Flash content in either pixels or percentage of browser window. 
 */
FlashTag.prototype.setWidth = function(w)
{
    this.width = width; 
}

/**
 * Specifies the height of the Flash content in either pixels or percentage of browser window. 
 */
FlashTag.prototype.setHeight = function(h)
{
    this.h = height; 
}

/**
 * The required version of the Flash Player for the specified content. 
 */
FlashTag.prototype.setVersion = function(v)
{
    this.version = v;
}

/**
 * Identifies the Flash content to the host environment (a web browser, for example) so that
 * it can be referenced using a scripting language. This value will be used for both the 'id'
 * and 'name' attributes depending on the client platform and whether the object or the embed
 * tag are used.
 */
FlashTag.prototype.setId = function(id)
{
    this.id = id;
}

/**
 * Specifies the background color of the Flash content. Use this attribute to override the background
 * color setting specified in the Flash file. This attribute does not affect the background
 * color of the HTML page. 
 */
FlashTag.prototype.setBgcolor = function(bgc)
{
    if (bgc.charAt(0) != '#')
    {
        bgc = '#' + bgc;
    }
    this.genericParam['bgcolor'] = bgc;
}

/**
 * Allows you to set multiple Flash vars at once rather than adding them one at a time. The string
 * you pass in should contain all your Flash vars, properly URL encoded. This function can be used in
 * conjunction with addFlashVar.
 */
FlashTag.prototype.addFlashVars = function(fvs)
{
    this.flashVarsStr = fvs;
}

/**
 * Used to send root level variables to the Flash content. You can add as many name/value pairs as
 * you want. The formatting of the Flash vars (turning them into a query string) is handled automatically.
 */
FlashTag.prototype.addFlashVar = function(n, v)
{
    if (this.flashVars == null)
    {
        this.flashVars = new Object();
    }

    this.flashVars[n] = v;
}

/**
 * Used to remove Flash vars. This is primarily useful if you want to reuse an instance of the FlashTag
 * but you don't want to send the same variables to more than one piece of Flash content. 
 */
FlashTag.prototype.removeFlashVar = function(n)
{
    if (this.flashVars != null)
    {
        this.flashVars[n] = undefined;
    }
}

/**
 * (true, false) Specifies whether the browser should start Java when loading the Flash Player for the first time.
 * The default value is false if this property is not set. 
 */
FlashTag.prototype.setSwliveconnect = function(swlc)
{
    this.genericParam['swliveconnect'] = swlc;
}

/**
 * (true, false) Specifies whether the Flash content begins playing immediately on loading in the browser.
 * The default value is true if this property is not set. 
 */
FlashTag.prototype.setPlay = function(p)
{
    this.genericParam['play'] = p;
}

/**
 * (true, false) Specifies whether the Flash content repeats indefinitely or stops when it reaches the last frame.
 * The default value is true if this property is not set. 
 */
FlashTag.prototype.setLoop = function(l)
{
    this.genericParam['loop'] = l;
}

/**
 * (true,false) Whether or not to display the full Flash menu. If false, displays a menu that contains only
 * the Settings and the About Flash options. 
 */
FlashTag.prototype.setMenu = function(m)
{
    this.genericParam['menu'] = m;
}

/**
 * (low, high, autolow, autohigh, best) Sets the quality at which the Flash content plays.
 */
FlashTag.prototype.setQuality = function(q)
{
    if (q != 'low' && q != 'high' && q != 'autolow' && q != 'autohigh' && q != 'best')
    {
        throw new Exception('UnsupportedValueException',
                            'Supported values are "low", "high", "autolow", "autohigh", and "best".');
    }
    this.genericParam['quality'] = q;
}

/**
 * (showall, noborder, exactfit) Determins how the Flash content scales.
 */
FlashTag.prototype.setScale = function(sc)
{
    if (sc != 'showall' && sc != 'noborder' && sc != 'exactfit')
    {
        throw new Exception('UnsupportedValueException',
                            'Supported values are "showall", "noborder", and "exactfit".');
    }
    this.genericParam['scale'] = sc;
}

/**
 * (l, t, r, b) Align the Flash content along the corresponding edge of the browser window and crop
 * the remaining three sides as needed.
 */
FlashTag.prototype.setAlign= function(a)
{
    if (a != 'l' && a != 't' && a != 'r' && a != 'b')
    {
        throw new Exception('UnsupportedValueException',
                            'Supported values are "l", "t", "r" and "b".');
    }
    this.genericParam['align'] = a;
}

/**
 * (l, t, r, b, tl, tr, bl, br) Align the Flash content along the corresponding edge of the browser
 * window and crop the remaining three sides as needed.
 */
FlashTag.prototype.setSalign= function(sa)
{
    if (sa != 'l' && sa != 't' && sa != 'r' && sa != 'b' && sa != 'tl' && sa != 'tr' && sa != 'bl' && sa != 'br')
    {
        throw new Exception('UnsupportedValueException',
                            'Supported values are "l", "t", "r", "b", "tl", "tr", "bl" and "br".');
    }
    this.genericParam['salign'] = sa;
}

/**
 * (window, opaque, transparent) Sets the Window Mode property of the Flash content for transparency,
 * layering, and positioning in the browser. 
 */
FlashTag.prototype.setWmode = function(wm)
{
    if (wm != 'window' && wm != 'opaque' && wm != 'transparent')
    {
        throw new Exception('UnsupportedValueException',
                            'Supported values are "window", "opaque", and "transparent".');
    }
    this.genericParam['wmode'] = wm;
}

/**
 * Specifies the base directory or URL used to resolve all relative path statements in your Flash content.
 */
FlashTag.prototype.setBase = function(base)
{
    this.genericParam['base'] = base;
}

/**
 * Get the Flash tag as a string. 
 */
FlashTag.prototype.toString = function()
{
    var flashTag = new String();
    if (this.ie)
    {
        flashTag += '<object id="testbla" name="testbla" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" ';
        if (this.id != null)
        {
            flashTag += 'id="'+this.id+'" ';
        }
        flashTag += 'codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version='+this.version+'" ';
        flashTag += 'width="'+this.width+'" ';
        flashTag += 'height="'+this.height+'">';
        flashTag += '<param name="movie" value="'+this.src+'"/>';

        for (var n in this.genericParam)
        {
            if (this.genericParam[n] != undefined && this.genericParam[n] != null)
            {
                flashTag += '<param name="'+n+'" value="'+this.genericParam[n]+'"/>';
            }
        }

        if (this.flashVars != null)
        {
            var fv = this.getFlashVarsAsString();
            if (fv.length > 0)
            {
                flashTag += '<param name="flashvars" value="'+fv+'"/>';
            }
        }
        flashTag += '</object>';
    }
    else
    {
        flashTag += '<embed id="testbla" name="testbla" src="'+this.src+'"';
        flashTag += ' width="'+this.width+'"';
        flashTag += ' height="'+this.height+'"';
        flashTag += ' type="application/x-shockwave-flash"';
        if (this.id != null)
        {
            flashTag += ' name="'+this.id+'"';
        }

        for (var n in this.genericParam)
        {
            if (this.genericParam[n] != undefined && this.genericParam[n] != null)
            {
                flashTag += (' '+n+'="'+this.genericParam[n]+'"');
            }
        }

        if (this.flashVars != null)
        {
            var fv = this.getFlashVarsAsString();
            if (fv.length > 0)
            {
                flashTag += ' flashvars="'+fv+'"';
            }
        }
        flashTag += ' pluginspage="http://www.macromedia.com/go/getflashplayer">';
        flashTag += '</embed>';
    }
    return flashTag;
}

/**
 * Write the Flash tag out. Pass in a reference to the document to write to. 
 */
FlashTag.prototype.write = function(doc)
{
    doc.write(this.toString());
	//alert("this.toString: "+this.toString());
}

/**
 * Write the Flash tag out. Pass in a reference to the document to write to. 
 */
FlashTag.prototype.getFlashVarsAsString = function()
{
    var qs = new String();
    for (var n in this.flashVars)
    {
        if (this.flashVars[n] != undefined && this.flashVars[n] != null)
        {
            qs += (escape(n)+'='+escape(this.flashVars[n])+'&');
        }
    }

    if (this.flashVarsStr != null)
    {
        return qs + this.flashVarsStr;
    }

    return qs.substring(0, qs.length-1);
}