// ----------------------------------------------
// File:		flashAPI.js
// Author:		Nathan Derksen
// Description:	Wrapper class for Flash detect kit. Requires the adobe AC_OETags.js file to be in place as well.
// Example:
// var itemFlash = new FlashAPI("itemImage");
// itemFlash.setAttribute("src", "/Shared/flash/itemZoom.swf");
// itemFlash.setAttribute("width", "475");
// itemFlash.setAttribute("height", "440");
// itemFlash.setAttribute("bgcolor", itemZoomProperties.backgroundColor);
// itemFlash.setAttribute("flashVars", imageZoomData);
// itemFlash.setAttribute("name", "itemZoom");
// itemFlash.setAlternateHTML(alternateHTML);
// itemFlash.setFlashVersion(8, 0, 0);
// itemFlash.generateFlash();
// ----------------------------------------------


// ----------------------------------------------
// Function:	FlashAPI()
// Author:		Nathan Derksen
// Description:	Base class
// Inputs:		<String> id: The ID for the tag to hold the Flash content
// Returns:		<Nothing>
// ----------------------------------------------
function FlashAPI(handle)
{
	this.pHandle = handle;
	
	this.pAttributes = new Object();
	this.pAttributes["width"] = 100;
	this.pAttributes["height"] = 100;
	this.pAttributes["wmode"] = "opaque";
	this.pAttributes["quality"] = "high";
	this.pAttributes["scale"] = "noscale";
	this.pAttributes["salign"] = "tl";
	this.pAttributes["bgcolor"] = "#FFFFFF";
	this.pAttributes["quality"] = "high";
	this.pAttributes["play"] = "true";
	this.pAttributes["loop"] = "false";
	this.pAttributes["allowScriptAccess"] = "sameDomain";

	this.pAlternateHTML = "";
	this.pAlternateImage = "";
	this.pRedirectURL = "";
	
	this.pVersionMajor = 9;
	this.pVersionMinor = 0;
	this.pVersionRevision = 0;

	// Fix for IE title issue - trap focus event which triggers title replacement
	this.setAttribute("onfocus", "pageTitle_verify();");
	this.setAttribute("menu", "false");
}

// ----------------------------------------------
// Function:	setAttribute()
// Author:		Nathan Derksen
// Description:	Sets the various attributes to be used within the <object> and <embed> tags. 
//				Certain attributes will automatically be put within certain tags (such as width 
//				and height in the <object> and <embed> tags and flashvars in the <param> and <embed> tags.
// Inputs:		<String> attName: The attribute name to set
//				<String> attValue: Value to give the specified attribute
// Returns:		<Nothing>
// ----------------------------------------------
FlashAPI.prototype.setAttribute = function(attName, attValue)
{
	if (attName)
	{
		this.pAttributes[attName] = attValue;
	}
};

// ----------------------------------------------
// Function:	setAlternateHTML()
// Author:		Nathan Derksen
// Description:	Specify the HTML to show in the event that the user does not have a recent enough version of Flash.
//				This HTML will be applied when the generateFlash method is called.
// Inputs:		<String> alternateHTML: The HTML to place inside the element specified in the constructor
// Returns:		<Nothing>
// ----------------------------------------------
FlashAPI.prototype.setAlternateHTML = function(alternateHTML)
{
	if (alternateHTML)
	{
		this.pAlternateHTML = alternateHTML;
	}
};

// ----------------------------------------------
// Function:	setAlternateImage()
// Author:		Nathan Derksen
// Description:	Specify an image to show in the event that the user does not have a recent enough version of Flash.
//				This image will be applied when the generateFlash method is called. Note that this method overrides 
//				the effect of setAlternateHTML().
// Inputs:		<String> src: The source of the image to place inside the element specified in the constructor. 
//				The dimensions used are taken from the width and height attributes assigned to the Flash component 
//				through setAttribute().
// Returns:		<Nothing>
// ----------------------------------------------
FlashAPI.prototype.setAlternateImage = function(src)
{
	if (src)
	{
		this.pAlternateImage = src;
	}
};

// ----------------------------------------------
// Function:	setAlternateRedirect()
// Author:		Nathan Derksen
// Description:	Specify a url to navigate to in the event that the proper version of the Flash plugin is not installed.
// Inputs:		<String> url: The location to navigate to.
// Returns:		<Nothing>
// ----------------------------------------------
FlashAPI.prototype.setAlternateRedirect = function(url)
{
	if (url)
	{
		this.pRedirectURL = url;
	}
};


// ----------------------------------------------
// Function:	setFlashVersion()
// Author:		Nathan Derksen
// Description:	Specify the version of the Flash player to set as minimum. Anything below this value will trigger
//				the alternate display when the generateFlash() method is called.
// Inputs:		<Number> major: The major version (eg 9)
//				<Number> minor: The minor version (almost always zero)
//				<Number> revision: The revision (generally zero, but may be higher. Set to zero if unsure)
// Returns:		<Nothing>
// ----------------------------------------------
FlashAPI.prototype.setFlashVersion = function(major, minor, revision)
{
	if (major)
	{
		this.pVersionMajor = major;
	}
	if (minor)
	{
		this.pVersionMinor = minor;
	}
	if (revision)
	{
		this.pVersionRevision = revision;
	}
};

// ----------------------------------------------
// Function:	generateFlash()
// Author:		Nathan Derksen
// Description:	Trigger the rendering of the Flash component. Nothing is displayed until this method is called.
// Inputs:		<None>
// Returns:		<Nothing>
// ----------------------------------------------
FlashAPI.prototype.generateFlash = function(inline)
{
	var isInline = false;
	if (inline == true)
	{
		isInline = true;
	}
	var validate = false;
	
	if (this.pHandle)
	{
		validate = true;
	}
	else if (isInline == true)
	{
		validate = true;
	}
	
	if (validate == true)
	{
		var hasReqVers = DetectFlashVer(this.pVersionMajor, this.pVersionMinor, this.pVersionRevision);

		var attributeList = new Array();
		for (var attribute in this.pAttributes)
		{
			attributeList.push(attribute);
			attributeList.push(this.pAttributes[attribute]);
		}

		if (hasReqVers == true)
		{
			var args = AC_GetArgs(attributeList, "", "movie", "clsid:d27cdb6e-ae6d-11cf-96b8-444553540000", "application/x-shockwave-flash");
			var html = "";
			html += '<object ';
			for (var attr in args.objAttrs)
			{
				html += attr + '="' + args.objAttrs[attr] + '" ';
			}
			html += '>';
			for (var attr in args.params)
			{
				html += '<param name="' + attr + '" value="' + args.params[attr] + '" />';
			}
			html += '<embed ';
			for (var attr in args.embedAttrs)
			{
				html += attr + '="' + args.embedAttrs[attr] + '" ';
			}
			html += '></embed></object>';
			if (isInline == true)
			{
				document.write(html);
			}
			else
			{
				this.pHandle.innerHTML = html;
			}
			this.triggerBlur();
		}
		else
		{
			if (this.pRedirectURL != "")
			{
				window.location.href = this.pRedirectURL;
			}
			else if (this.pAlternateImage != "")
			{
				if (isInline == true)
				{
					document.write('<img src="' + this.pAlternateImage + '" width="' + this.pAttributes["width"] + '" height="' + this.pAttributes["height"] + '" />');
				}
				else
				{
					this.pHandle.innerHTML = '<img src="' + this.pAlternateImage + '" width="' + this.pAttributes["width"] + '" height="' + this.pAttributes["height"] + '" />';
				}
			}
			else
			{
				if (isInline == true)
				{
					document.write(this.pAlternateHTML);
				}
				else
				{
					this.pHandle.innerHTML = this.pAlternateHTML;
				}
			}
		}
	}
};

// ----------------------------------------------
// Function:	triggerBlur()
// Author:		Nathan Derksen
// Description:	Manually remove the focus from the Flash module
// Inputs:		<None>
// Returns:		<Nothing>
// ----------------------------------------------
FlashAPI.prototype.triggerBlur = function()
{
	var elements = [];
	
	if (parent == window)
	{
		// not in an iframe		
		if (document.getElementById("divLogo") != null)
		{
			elements = document.getElementById("divLogo").getElementsByTagName("a");
		}
		else
		{
			elements = document.getElementsByTagName("a");
		}
	}
	else
	{
		// in an iframe, get around the fact that the first bunch of links are not visible and can't be detected as such
		if (document.getElementById("divPageContent") != null)
		{
			elements = document.getElementById("divPageContent").getElementsByTagName("a");
		}
	}

	if (elements.length > 0)
	{
		elements[0].focus();
		elements[0].blur();
	}
	pageTitle_verify();
}

// ----------------------------------------------
// Function:	isFlashAvailable()
// Author:		Nathan Derksen
// Description:	A static helper method that allows for a Flash player version test without actually needing to create 
//				a new instance of FlashAPI.
// Inputs:		<Number> major: The major version (eg 9)
//				<Number> minor: The minor version (almost always zero)
//				<Number> revision: The revision (generally zero, but may be higher. Set to zero if unsure)
// Returns:		<Boolean>: True if the installed player is greater than or equal to the passed in parameters, false otherwise.
// ----------------------------------------------
FlashAPI.isFlashAvailable = function(major, minor, revision)
{
	return DetectFlashVer(major, minor, revision);
};

FlashAPI.getHandle = function(movieName)
{
	var isIE = navigator.appName.indexOf("Microsoft") != -1;
	var windowRef = window[movieName];
	var documentRef = document[movieName];
	
	if (isIE)
	{
		return windowRef;
	}
	else
	{
		if (documentRef.length > 0)
		{
			// Some flash embed implementations use "name" for both object and embed tags. We want the embed one.
			return documentRef[documentRef.length-1];
		}
	}
	return null;
};