/*****************************************************************************
 *
 * File:			viLib.js for VAS
 *
 * Description:
 *	Javascript library for use on all VI sites using VAS. Function 
 *  calls can be made in the templates, leaving the developer to pass
 *  through the arguments.
 *
 * Copyright (c) 2000 Virage, Inc.  All rights reserved.
 *
 *****************************************************************************/
 
/*  uses a vtl_loop to resolve any macros in the code  */



/*****************************************************************************
 *  Function:		vi_browserCheck
 *
 *  Description:
 *	A browser object used to detect browser name and version, as well
 *	as platform.
 *
 *  Arguments: none
 *
 *  Return value: none
 *
 *  Side Effects:
 *  Uses the object to assign a browser name and version to
 *  serve up specific content.
 *
 *****************************************************************************/

function vi_browserCheck() 
{
	var browser_type = navigator.appName
	if (browser_type == "Netscape") this.browser_type = "ns"
	else if (browser_type == "Microsoft Internet Explorer") this.browser_type = "ie"
	else this.browser_type = browser_type
	
	this.version = parseInt(navigator.appVersion)
	this.platform = navigator.appVersion
	
	this.w = this.platform.indexOf("Win")
	this.m = this.platform.indexOf("Mac")
	
	/* Netscape tests */
	this.ns = (this.browser_type == "ns" && this.version >= 4)
	this.nswin = (this.browser_type == "ns" && this.w != -1 && this.version >= 4)
	this.nsmac = (this.browser_type == "ns" && this.m != -1 && this.version >= 4)
	this.ns4win = (this.browser_type=="ns" && this.w != -1 && this.version == 4)
	this.ns4mac = (this.browser_type == "ns" && this.m != -1 && this.version == 4)
	this.ns5win = (this.browser_type == "ns" && this.w != -1 && this.version == 5)
	this.ns5mac = (this.browser_type == "ns" && this.m != -1 && this.version == 5)
	
	/* Internet Explorer  tests */
	this.ie = (this.browser_type == "ie" && this.version >= 4)
	this.iewin = (this.browser_type == "ie" && this.w != -1 && this.version >= 4)
	this.iemac = (this.browser_type == "ie" && this.m != -1 && this.version >= 4)
	this.ie4win = (navigator.userAgent.indexOf('MSIE 4') > 0 && this.w != -1)
	this.ie4mac = (navigator.userAgent.indexOf('MSIE 4') > 0 && this.m != -1)
	this.ie5win = (navigator.userAgent.indexOf('MSIE 5') > 0 && this.m != -1)
	this.ie5mac = (navigator.userAgent.indexOf('MSIE 5') > 0 && this.m != -1)
	if (this.ie5) this.version = 5
	this.min = (this.ns||this.ie)
}

webBrowser = new vi_browserCheck()

/*****************************************************************************
 *  Function:		vi_Player
 *
 *  Description:
 *	Passes through numerous arguments to build a URL.
 *  
 *
 *  Arguments:
 *				server - path to the vss_SR
 *				template - the template to display in the pop-up
 *				assetid - the asset id, e.g. 
 *				query - the query macro: 
 *				playtime - the start time for the clip. Differs depending
 *							   on whether or not we are playing from clip
 *							   or a point in the transcript. From clip use 
 *							    or from transcript use
 *							   .
 *				height & width - sizing parameters for the window
 *
 *  Return Value: A fully resolved url to the redirect page.
 *
 *  Side Effects: 
 *  This function passes through all the essential info
 *  so the URL can fully resolve for each clip and launch the window.
 *
 *****************************************************************************/

function vi_Player(server,template,assetid,query,flex_time,height,width,scroll,fetch) 
{
	var specs;
	var visuals;
	
	topposition = (screen.height) ? (screen.height-height)/2 : 0;
	leftposition = (screen.width) ? (screen.width-width)/2 : 0;
	
	
	specs = server;
	specs += "template=";
	specs += template;
	specs += ";asset_id=";
	specs += assetid;
	specs += ";query=";
	specs += query;
	specs += ";flex_time=";
	specs += flex_time;
	specs += ";fetch_records=";
	specs += fetch;
	
	visuals = "status=1,height=";
	visuals += height;
	visuals += ",width=";
	visuals += width;
	visuals += ",top=";
	visuals += topposition;
	visuals += ",left=";
	visuals += leftposition;
	visuals += ",menu=0,scrollbars=" + scroll + ",resizable=0,toolbar=0";
	
	window.open(specs, "vasPlayer", visuals);
}

//Pop up a window to view/print a transcript or to pop open an email window.
function vi_PopWin(server,template,windowName,assetid,query,flex_time,height,width,scroll,fetch,maxhighlights) 
{
	var specs;
	var visuals;
	
	topposition = (screen.height) ? (screen.height-height)/2 : 0;
	leftposition = (screen.width) ? (screen.width-width)/2 : 0;
	
	specs = server;
	specs += "template=";
	specs += template;
	specs += ";asset_id=";
	specs += assetid;
	specs += ";query=";
	specs += query;
	specs += ";flex_time=";
	specs += flex_time;
	specs += ";fetch_records=";
	specs += fetch;
	specs += ";max_highlights=";
	specs += maxhighlights;
	
	visuals = "status=1,height=";
	visuals += height;
	visuals += ",width=";
	visuals += width;
	visuals += ",top=";
	visuals += topposition;
	visuals += ",left=";
	visuals += leftposition;
	visuals += ",menu=0,scrollbars=" + scroll + ",resizable=0,toolbar=0";
	
	window.open(specs, windowName, visuals);
}

/*****************************************************************************
 *  Function:		vi_Window
 *
 *  Description:
 *	Similar to vi_Player, this function passes through arguments 
 *  to build a URL to some static info in a pop-up window.
 *
 *  Arguments:
 *				server - path to the vss_SR
 *				template - the template to display in the pop-up
 *				windowName - the name of the pop-up window
 *				height & width - sizing parameters for the window
 *
 *  Return Value: A fully resolved url to display static html.
 *
 *  Side Effects:
 *  Static information like search tips is displayed in pop-up 
 *  windows.
 *****************************************************************************/
//Pops up search tips window.
function vi_Window(server,template,windowName,height,width)
{
	var specs;
	var visuals;
	
	topposition = (screen.height) ? (screen.height-height)/2 : 0;
	leftposition = (screen.width) ? (screen.width-width)/2 : 0;
	
	specs = server;
	specs += "template=";
	specs += template;

	visuals = "status=1,height=";
	visuals += height;
	visuals += ",width=";
	visuals += width;
	visuals += ",top=";
	visuals += topposition;
	visuals += ",left=";
	visuals += leftposition;
	visuals += ",menu=0,scrolling=0,resizable=0,toolbar=0";

	window.open(specs, windowName, visuals);
}

//Function to pop open the Transcript Player window.
function vi_PlayerTran(server,template,windowName,assetid,query,flex_time,height,width,scroll,fetch,maxhighlights)
{
	var specs;
	var visuals;
	
	topposition = (screen.height) ? (screen.height-height)/2 : 0;
	leftposition = (screen.width) ? (screen.width-width)/2 : 0;
	
	specs = server;
	specs += "template=";
	specs += template;
	specs += ";asset_id=";
	specs += assetid;
	specs += ";query=";
	specs += query;
	specs += ";flex_time=";
	specs += flex_time;
	specs += ";fetch_records=";
	specs += fetch;
	specs += ";max_highlights=";
	specs += maxhighlights;

	
	visuals = "status=1,height=";
	visuals += height;
	visuals += ",width=";
	visuals += width;
	visuals += ",top=";
	visuals += topposition;
	visuals += ",left=";
	visuals += leftposition;
	visuals += ",menu=0,scrolling=0,resizable=0,toolbar=0";

	window.open(specs, windowName, visuals);
}


/*****************************************************************************
 *  Function:		vi_checkCookie
 *
 *  Description:
 *	Searches  through document.cookie and checks for the assigned 
 *  cookie name/value pair.  
 *  
 *  Arguments:
 *				prefName - the name of the preferences page without
 *								the .tmpl extension.
 *				cookieName - this is the account name
 *
 *  Return Value: none
 *
 *  Side Effects:
 *	Sends the user to the preferences page if there is no cookie set
 *  and uses the vi_getCookie function to retrieve the value if there is 
 *  a cookie set.
 *			
 *****************************************************************************/

function vi_checkCookie(prefName,cookieName)
{
	var allcookies = document.cookie;
	var pos = allcookies.indexOf(cookieName+"=");
	var today, expires, player;
	
	if (pos == -1)
	{
		today = new Date;
		today.setFullYear(2020);
		expires = today.toGMTString();
		document.cookie = cookieName + "=" + prefName + ";expires=" + expires;
		self.location.href = "/vss-bin/vss_SR/masters/play?template=" + prefName + ".tmpl;asset_id=;video_asset_id=;query=;timein_msec=;timeout_msec=;timein=;timeout=;flex_time=";
	} 
	else 
	{
		player = vi_getCookie(cookieName);
		
		/* Get a handle on the cookie value, and test if it is the default playprefs.
		   If a user launches the player, and fails to choose a format/bitrate, the cookie value
		   is set to playprefs. This is a problem since we append add "play" and append "clip.tmpl"
		   onto the cookie value to use as a template name. We would end up with a player name
		   called playplayprefsclip.tmpl. A file which does not exist */
		   
		if(player == "playprefs")
		{
			player = player + ".tmpl";
		}
		else
		{
			player = "play" + player + "clip.tmpl";
		}
			self.location.href = "/vss-bin/vss_SR/masters/play?asset_id=;video_asset_id=;query=;cinfo_timein_msec=;cinfo_timeout_msec=;cinfo_timein=;cinfo_timeout=;flex_time=;template=" + player;
	}

}

/*****************************************************************************
 *  Function:		vi_getCookie
 *
 *  Description:
 *	Gets the cookie value from the variable allcookies.
 *
 *  Arguments:
 *				cookieName - the account name
 *
 *  Return Value: 
 *				the cookie value, which is equal to the bitrate + 
 *				format. e.g. 56asf		
 *
 *  Side Effects: 
 *  This function is called within the vi_checkCookie function, as well
 *  as in the vi_setRadioPrefs function to retrieve the value of the
 *  previously chosen format and bitrate.
 *
 *****************************************************************************/
	
function vi_getCookie(cookieName)
{
	var allcookies = document.cookie;
	var pos = allcookies.indexOf(cookieName+"=");
	var num, start, end, rawValue, value;
		
	num = parseInt(cookieName.length) + 1;
	start = pos + num; 
	end  = allcookies.indexOf(";", start);      
	if(end == -1) end = allcookies.length;     
	rawValue = allcookies.substring(start, end);
	value = unescape(rawValue); 
	
	return value;  
}
	
/*****************************************************************************
 *  Function:		vi_setCookie
 *
 *  Description:
 *	This function is called to set the cookie value.
 *
 *  Arguments:
 *				cookieValue - the cookie value to set. e.g. 56asf, 56ram
 *				cookieName - this is the account name
 *
 *  Return Value: sets cookieName = value.
 *
 *  Side Effects:
 *  The result is a cookie set to the appropriate bitrate and format.
 *  The standard is to use this function exclusively in playprefs.tmpl.
 *
 *****************************************************************************/

function vi_setCookie(cookieValue,cookieName) 
{
	var allcookies = window.document.cookie;
	var pos = allcookies.indexOf(cookieName + "=");
	var today;
	var expires;
	
	today = new Date;
	today.setFullYear(2020);
	expires = today.toGMTString();
	window.document.cookie = cookieName + "=" + cookieValue + ";expires=" + expires;
}
		
/*****************************************************************************
 *  Function:		vi_loadVideo
 *
 *  Description:
 *	Loops through the radio values, and then stores their choice
 *  into a variable.
 *  
 *  Arguments:
 *				formName - name of the form.
 *				radioName - name of the group of radio buttons.
 *
 *  Return Value: none
 *
 *  Side Effects:
 *  The user is sent to the page that contains the player with their 
 *  chosen bitrate and format.
 *
 *****************************************************************************/

function vi_loadVideo(formName,radioName) 
{
	var player;
	var i_Radio;
	
	for( i_Radio = 0; i_Radio < document[formName][radioName].length; i_Radio++ ) 
	{
		if (document[formName][radioName][i_Radio].checked) 
		{
			player = "play" + document[formName][radioName][i_Radio].value + "clip.tmpl";
		}
	}
	 	
	self.location.href = "/vss-bin/vss_SR/masters/play?template=" + player + ";asset_id=;query=;timein_msec=;timeout_msec=;timein=;timeout=;flex_time=";	
}	
	
/*****************************************************************************
 *  Function:		vi_setRadioPrefs
 *
 *  Description:
 *  Uses the vi_getCookie function to retrieve the cookie value.
 *  and then loops through the radio button values and does a
 *  comparison to find the match.
 *
 *  Arguments:
 *				formName - name of the prefs form
 *				radioName - name of radio buttons
 *				cookieName - this is the account name
 *
 *  Return Value: the cookie value
 *
 *  Side Effects:
 *	The radio buttons on the preferences page will reflect their 
 *  previous choice in bitrate and/or format.
 *
 *****************************************************************************/	

function vi_setRadioPrefs(formName,radioName,cookieName) 
{
	var format = vi_getCookie(cookieName);
	var i_Radio;
	
	for ( i_Radio = 0; i_Radio < document[formName][radioName].length; i_Radio++ )
	{
		if (format == document[formName][radioName][i_Radio].value) 
		{
			document[formName][radioName][i_Radio].checked = true;
		}
	}
}
	
/*****************************************************************************
 *  Function:		vi_setDropDowns
 *
 *  Description:
 *	Loops through the arguments, then loops through the option
 *  values in the drop-downs to compare the query field with the
 *  selectedIndex.
 *
 *  Arguments: 
 *				takes in name/value pairs for the drop-downs.
 *				e.g. vi_setDropDowns('query1','')
 *
 *  Return Value: none
 *
 *  Side Effects:
 *  The drop-down menus are set to reflect what the user previously
 *  searched on.
 *
 *****************************************************************************/
	
function vi_setDropDowns() 
{
	var i_Drop;
	var j_Select;
	var fieldName;
	var valName; 
	 
	for ( i_Drop = 0; arguments.length > i_Drop ; i_Drop += 2)
	{
		fieldName = arguments[i_Drop];
		valName = arguments[i_Drop + 1];
		
		for ( j_Select = 0; j_Select < document.vasForm[fieldName].length; j_Select++ )
		{
			if (document.vasForm[fieldName][j_Select].value == valName)
			{
				document.vasForm[fieldName].selectedIndex = j_Select;
			}
		}
	}
}

function clipDuration(clipLength){
	var duration = clipLength;
	var length = duration.length;//how many characters in duration
	var duration = duration.substring(6,length);//get duration in minutes,seconds,frames
	var colon = duration.lastIndexOf(":", length) + 1; //find colon
	var period = duration.indexOf("."); //find period
	var seconds = duration.substring(colon,period)//capture seconds
	var minutes = clipLength.split(":");
	
	minutes = minutes[minutes.length-2];
	seconds = seconds;
	
	document.write(minutes + ":" + seconds);
}		
/******************************************* 
 *  we are through the file, and do not 
 *	need to resolve any other macros
 *	so we close the vtl_loop
 *******************************************/