/* 
-----------------------------------------------------------------
	NZ on Screen
	flash.js
	
	Handle flash detection and insertion
	This version: 17.04.2008 by AK
	Last Updated: See SVN	
	
	Note: Bundled functions to work without seperate scripts.
	Note: Replaced flash detection functions from Adobe Kit.
-----------------------------------------------------------------
*/

// GLOBAL VARIABLES
var global_flash_bgcolor = '#000000'; 
// Minimum version required for NZonScreen video is version 9.0.124
var requiredMajorVersion = 9; // Major version of Flash required (9)
var requiredMinorVersion = 0; // Minor version of Flash required
var requiredRevision = 124; // Minor version of Flash required

var isIE  = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
var isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;

// OLD BROWSER/WRONG FLASH VERSION NOTICE
function not_supported(type,target) {
	
	if ((!document.getElementsByTagName) && (!document.getElementById)) return false;
	if (!document.getElementById(target)) return false;
	if (type == 'no_flash') {
		var str;
		if ((target == 'flash2') || (target == 'flash3')) { // demote the second/third message
			str = '<div class="form_messages"><div><div><h2 class="h2"><a href="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash">Update Flash player</a></h2><p>You need to update your version of Adobe Flash Player to access all the areas of this site. Please <a href="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash">DOWNLOAD here</a>, follow the instructions and then come back to look at NZ On Screen.</p></div></div></div>';
		} else { // show standard message
			str = '<div class="form_messages"><div><div><h2 class="h2"><a href="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash">Please update Flash player</a></h2><p class="error">Our videos require 9.0.124.0 or later</p><p>You need to update your version of Adobe Flash Player in order to see the videos on this site. It\'s a quick download and will also be useful for other sites. Please <a href="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash">DOWNLOAD HERE</a>, follow the instructions and then come back to NZ On Screen.</p></div></div><div class="liner_bottom"></div></div>';
		}
				
		if (($$('.section_home')[0]) && ((target == 'flash2') || (target == 'flash3'))) { 
			$(target).getElementsByClassName('flash_error')[0].innerHTML = str;
			$(target).getElementsBySelector('.form_messages p')[0].setStyle({'marginTop':'3px'});
		} else {
			$(target).innerHTML = str;
		}
	}
}

// FLASH GENERATION
function generate_unique_page_id() {
	/* 	
	A unique id that is sent to all Flash movies on the page
	so that Flash movies can talk to each other without referencing
	Flash movies open in other windows.
	*/
		
	var ranNum= Math.floor(Math.random()*1000);
	return ranNum;	
}

// Flash Player Version Detection - Rev 1.6
// Detect Client Browser type
// Copyright(c) 2005-2006 Adobe Macromedia Software, LLC. All rights reserved.

function ControlVersion()
{
	var version;
	var axo;
	var e;

	// NOTE : new ActiveXObject(strFoo) throws an exception if strFoo isn't in the registry

	try {
		// version will be set for 7.X or greater players
		axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");
		version = axo.GetVariable("$version");
	} catch (e) {
	}

	if (!version)
	{
		try {
			// version will be set for 6.X players only
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.6");
			
			// installed player is some revision of 6.0
			// GetVariable("$version") crashes for versions 6.0.22 through 6.0.29,
			// so we have to be careful. 
			
			// default to the first public version
			version = "WIN 6,0,21,0";

			// throws if AllowScripAccess does not exist (introduced in 6.0r47)		
			axo.AllowScriptAccess = "always";

			// safe to call for 6.0r47 or greater
			version = axo.GetVariable("$version");

		} catch (e) {
		}
	}

	if (!version)
	{
		try {
			// version will be set for 4.X or 5.X player
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
			version = axo.GetVariable("$version");
		} catch (e) {
		}
	}

	if (!version)
	{
		try {
			// version will be set for 3.X player
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
			version = "WIN 3,0,18,0";
		} catch (e) {
		}
	}

	if (!version)
	{
		try {
			// version will be set for 2.X player
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
			//version = "WIN 2,0,0,11";
			if (whichbrowser.isIE7x) {
				//version = "WIN 9,0,124,0";
				version = "WIN 2,0,0,11";
			} else {
				version = "WIN 2,0,0,11";
			}
		} catch (e) {
			version = -1;
		}
	}
	//alert(version);
	return version;
}
	
// JavaScript helper required to detect Flash Player PlugIn version information
function GetSwfVer(){
	// NS/Opera version >= 3 check for Flash plugin in plugin array
	var flashVer = -1;
	
	if (navigator.plugins != null && navigator.plugins.length > 0) {
		if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
			var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
			var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description;
			var descArray = flashDescription.split(" ");
			var tempArrayMajor = descArray[2].split(".");			
			var versionMajor = tempArrayMajor[0];
			var versionMinor = tempArrayMajor[1];
			var versionRevision = descArray[3];
			if (versionRevision == "") {
				versionRevision = descArray[4];
			}
			if (versionRevision[0] == "d") {
				versionRevision = versionRevision.substring(1);
			} else if (versionRevision[0] == "r") {
				versionRevision = versionRevision.substring(1);
				if (versionRevision.indexOf("d") > 0) {
					versionRevision = versionRevision.substring(0, versionRevision.indexOf("d"));
				}
			}
			var flashVer = versionMajor + "." + versionMinor + "." + versionRevision;
			//alert(flashVer);
		}
	}
	// MSN/WebTV 2.6 supports Flash 4
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.6") != -1) flashVer = 4;
	// WebTV 2.5 supports Flash 3
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.5") != -1) flashVer = 3;
	// older WebTV supports Flash 2
	else if (navigator.userAgent.toLowerCase().indexOf("webtv") != -1) flashVer = 2;
	else if ( isIE && isWin && !isOpera ) {
		flashVer = ControlVersion();
	}	
	return flashVer;
}

// When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision)
{
	versionStr = GetSwfVer();
	//alert(versionStr);
	if (versionStr == -1 ) {
		return false;
	} else if (versionStr != 0) {
		if(isIE && isWin && !isOpera) {
			// Given "WIN 2,0,0,11"
			tempArray         = versionStr.split(" "); 	// ["WIN", "2,0,0,11"]
			tempString        = tempArray[1];			// "2,0,0,11"
			versionArray      = tempString.split(",");	// ['2', '0', '0', '11']
		} else {
			versionArray      = versionStr.split(".");
		}
		var versionMajor      = versionArray[0];
		var versionMinor      = versionArray[1];
		var versionRevision   = versionArray[2];

        	// is the major.revision >= requested major.revision AND the minor version >= requested minor
		if (versionMajor > parseFloat(reqMajorVer)) {
			return true;
		} else if (versionMajor == parseFloat(reqMajorVer)) {
			if (versionMinor > parseFloat(reqMinorVer))
				return true;
			else if (versionMinor == parseFloat(reqMinorVer)) {
				if (versionRevision >= parseFloat(reqRevision))
					return true;
			}
		}
		return false;
	}
}

/*	Generate Flash
	Function called on flashinit()
	**************************************** */
function generateFlash(flashContainerID, flashFileName, flashWidth, flashHeight, flashVars, markupBefore, markupAfter) {	
	// check for JS support
	if ((!document.getElementsByTagName) && (!document.getElementById)) return false;
	// don't execute if container is not there
	if (!document.getElementById(flashContainerID)) return false; 
	
	flashContainer = document.getElementById(flashContainerID);	
	global_flash_available = DetectFlashVer(requiredMajorVersion, requiredMinorVersion, requiredRevision); // Adobe version
	//alert(global_flash_available);
	
	// DS 151106: Pass flash location to swf so that it can load child movies from correct location
	//flashVars += ('flashFilePath=' + global_site_domain + global_flash_file_path); 				
				
	var full_flash_file_path = flashFileName; // editable		
		
	generatedFlash =  ('\n<!-- START GENERATED MARKUP -->\n');
		
	if (markupBefore != '')	{	
		generatedFlash += (markupBefore + '\n');
	}	
		//
	if (global_flash_available) {
		var tempIdValue;
		if (typeof(flashObjectId)!= "undefined") {
			tempIdValue = flashObjectId + "_";
		} else {
			tempIdValue = "flashobject_";
		}
		generatedFlash += ('<object id="' + tempIdValue + generate_unique_page_id() + '" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0" width="' + flashWidth + '" height="' + flashHeight + '">\n');
		generatedFlash += ('<param name="movie" value="' + full_flash_file_path + '">\n');
		generatedFlash += ('<param name="quality" value="high">\n');
		generatedFlash += ('<param name="loop" value="false">\n');
	//	generatedFlash += ('<param name="bgcolor" value="' + global_flash_bgcolor + '">\n');				
		generatedFlash += ('<param name="menu" value="true">\n');
		generatedFlash += ('<param name="scale" value="noscale">\n');
		generatedFlash += ('<param name="wmode" value="opaque">\n');
		generatedFlash += ('<param name="salign" value="TL">\n');	
		generatedFlash += ('<param name="allowFullScreen" value="true">\n');
		//generatedFlash += ('<param name="allowScriptAccess" value="always">\n'); // remove after testing
		
		if (flashVars != '') {
			generatedFlash += ('<param name="flashvars" value="' + flashVars + '">\n');	
			// for testing - added "allowScriptAccess"
			// bgcolor="' + global_flash_bgcolor + '"
			generatedFlash += ('<embed id="' + tempIdValue + generate_unique_page_id() + '" wmode="opaque" src="' + full_flash_file_path + '" quality="high" pluginspage="http://www.adobe.com/go/getflashplayer" type="application/x-shockwave-flash" width="' + flashWidth + '" height="' + flashHeight + '" flashvars="' + flashVars + '" menu="true"  allowfullscreen="true" scale="noscale" salign="TL">\n');
		} else {			
			generatedFlash += ('<embed id="' + tempIdValue + generate_unique_page_id() + '" wmode="opaque" src="' + full_flash_file_path + '" quality="high" pluginspage="http://www.adobe.com/go/getflashplayer" type="application/x-shockwave-flash" width="' + flashWidth + '" height="' + flashHeight + '" menu="true" allowfullscreen="true" scale="noscale" salign="TL">\n');	
		}
		generatedFlash += ('</embed>\n');
		generatedFlash += ('</object>\n');	
	}

	if (markupAfter != '') {	
		generatedFlash += ('\n' + markupAfter + '\n');
	}
		
	generatedFlash +=	('<!-- END GENERATED MARKUP -->\n');		
		
	//	Markup Generation: Conditional Update 150806 -
	//	If there is a reason to replace the current contents of the flash div with some generated content
	//	ie, if Flash/Version if sufficient, or there is a non-Flash message to output
		
	if (global_flash_available) {
		flashContainer.innerHTML = generatedFlash;
		//setTimeout(function() { divRollOutWatch(flashContainerID); }, 1000, this);
		divRollOutWatch(flashContainerID); // this watches for the exit of the mouse - required for flash actionscript
	}  else {
		not_supported('no_flash',flashContainerID);	
	}
}
	
/* 	flashinit()
	Note:
	Detection MUST be performed during page load. This is because the IE fork writes VB script to the page -
	if this was done post page load the page contents would be replaced with the script thereby erasing the page content.		
*/



//javascript callback - flash player to call this when a video is played
//must format URL /title/user_view/title_id to match rails routes
function nzosTitleClick(titleID) {
    tmp = new Ajax.Request(
        '/title/user_view/' + titleID, 
        { 
            method:'post', 
            onSuccess: function(transport){
                // var response = transport.responseText || "no response text";
            },
            onFailure: function(){ }
        }
    );
}


function HighResPref(value) {
    nzosHighResPref(value);
}
//javascript callback - flash player to call this 
// when user changes hi or lo res preference
function nzosHighResPref(value) {
    if (value) {
        value = 1;
    } else {
        value = 0;
    }
    
    tmp = new Ajax.Request(
        '/public/hi_res_pref?hi_res_value=' + value, 
        { 
            method:'get', 
            onSuccess: function(transport){
                // var response = transport.responseText || "no response text";
            },
            onFailure: function(){ }
        }
    );
}

// JavaScript to Flash notification of mouse exit from player
function divRollOutWatch(flashContainerID) { 
	if((!cssjs('check',document.body,"section_home")) && (!cssjs('check',document.body,"section_screentalk"))) { // don't run on homepage or Screentalk
		document.getElementById(flashContainerID).getElementsByTagName("object")[0].onmouseout = function() {
			if (navigator.appName.indexOf("Microsoft") != -1) {
				var flashobject = document.getElementById(flashContainerID).getElementsByTagName("object")[0]; // get ID
			} else {
				var flashobject = document.getElementById(flashContainerID).getElementsByTagName("embed")[0]; // get ID
			}
			var flashobjectid = String(flashobject.id);
			var flash = document.getElementById(flashobjectid);
			
			try {
				flash.divRollOut();
			} catch (err) {
				// player hasn't loaded yet - do nothing
			}
		}
	}
}

// JavaScript fix for FF3Mac fullscreen bug
function fullScreenExitJS() {
	if (whichbrowser.isMac) {
		var flashobject = document.getElementById("flash1").getElementsByTagName("object")[0];
		if (flashobject) {
			setTimeout(function() {
				flashobject.style.top = "-1px";
			},10);
			setTimeout(function() {
				flashobject.style.top = "0";
			},20);
			window.focus();
		}
	}
}