/*
    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);