/*
	jquery.gplusone.js - http://socialmediaautomat.com/jquery-gplusone-js.php
	Copyright (c) 2011 Stephan Helbig
	This plugin available for use in all personal or commercial projects under both MIT and GPL licenses.
*/

(function($){  
	$.fn.gplusone = function(options) {  
	        
	  //Set the default values, use comma to separate the settings 
	  var defaults = {
	  	mode: 'insert',											//insert|append  
	  	size: 'standard',										//small|medium|standard|tall
			count: true,												//true|false
			href: false,												//false|url
			lang: 'en-US',											//en-US|en-GB|de|es|fr|...
			hideafterlike:false,								//true|false (only possible with mode: 'insert')
			googleanalytics:false,							//true|false
			googleanalytics_obj: 'pageTracker',	//pageTracker|_gaq
			onlike: "return true;",
			onunlike: "return true;"
		}  
		            
		var options =  $.extend(defaults, options);  
	                        
	  return this.each(function() {  
		  var o = options;  
		  var obj = $(this);
		  var dynUrl = document.location;
		  var dynTitle = document.title.replace("'",''');
		  
		  if(!o.href){
		  	o.href=dynUrl;
		  }
		  var strcount='false';
		  if(o.count){
		  	strcount='true';
		  }
		  (function() {
		    var e = document.createElement('script');
		    e.async = true;
		    e.src = document.location.protocol + '//apis.google.com/js/plusone.js';
		    $(e).append("{lang: '"+o.lang+"'}");
		    
		    $('head').append(e);
		    var e = document.createElement('script');
		    var hidefunc = '';
		    if(o.hideafterlike){
		    	hidefunc = '$(obj).hide();';
		    }
		    var gfunclike = '';
		    var gfuncunlike = '';
		    if(o.googleanalytics){
		    	if(o.googleanalytics_obj!='_gaq'){
			    	gfunclike = o.googleanalytics_obj+"._trackEvent('google', 'plussed', '"+dynTitle+"');";
			    	gfuncunlike = o.googleanalytics_obj+"._trackEvent('google', 'unplussed', '"+dynTitle+"');";
			    } else {
			    	gfunclike = o.googleanalytics_obj+".push(['_trackEvent','google', 'plussed', '"+dynTitle+"']);";
			    	gfuncunlike = o.googleanalytics_obj+".push(['_trackEvent','google', 'unplussed', '"+dynTitle+"']);";
			    }
		    }
		    $(e).append("function gplus_callback(r){if(r.state=='on'){"+hidefunc+gfunclike+o.onlike+"}else{"+gfuncunlike+o.onunlike+"}}");
		    $('head').append(e);
		  }());
		
			var thtml = '<g:plusone size="'+o.size+'" callback="gplus_callback" href="'+o.href+'" count="'+strcount+'"></g:plusone>';
			if(o.mode=='insert')
				$(obj).html(thtml);
			else
				$(obj).append(thtml);
	  });
	}  
})(jQuery);