var eXo = eXo || {};
eXo.social = eXo.social || {};
/*************************************************************************/

/**
 * Default Construction
 */
function SocialUtil() {
}

/**
 * Constants
 */
SocialUtil.ADDED_MARGIN_BOTTOM = 10;
 
/**
 * Browsers for checking
 */
SocialUtil.dataBrowser = [
		{
			string: navigator.userAgent,
			subString: "Chrome",
			identity: "Chrome"
		},
		{ string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari",
			versionSearch: "Version"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
];
	
/**
 * Adjust height belong to browser
 */
SocialUtil.prototype.adjustHeight = function(contentContainer) {
  var browser = this.getCurrentBrowser();
  
  if (browser != null) {
    if ((browser == "Safari")	|| (browser == "Chrome")) {
    	gadgets.window.adjustHeight(contentContainer.offsetHeight + SocialUtil.ADDED_MARGIN_BOTTOM);
    } else {
    	gadgets.window.adjustHeight();
    }
  } else {
  	gadgets.window.adjustHeight();
  }
}

/**
 * Get current Browser
 */
SocialUtil.prototype.getCurrentBrowser = function() {
	function searchString(data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	}
	
	var browser = searchString(SocialUtil.dataBrowser) || null; 
	
	return browser;
}

/*************************************************************************/
eXo.social.SocialUtil = new SocialUtil() ;