/* 
   RSS feed reader
   (c) 2008 WeerOnline B.V.
   auteur: Chris Hayes 
   Deze javascript class gebruikt MooTools 1.0.
   Deze class leest alleen lokale RSS feeds, ivm met beveiliging door javascript tegen Cross Site Scripting (XSS).
   Gebruik een proxy script om remote RSS feeds te lezen.
*/ 

var RssFeeder = new Class(
{
      options: {
                  rss_periodical    : null
               },

      initialize: function(options)
                  {

                    this.setOptions(options); 
                    this.ajax          = null;

                    if(!this.options.url ||  this.options.url ==null) { alert('RSS url niet opgegeven.');return;}
                    if(!this.options.rssdiv ||  this.options.rssdiv ==null) { alert('Div om RSS feed te tonen is niet opgegeven.');return;}
                    this.rssdiv = $(this.options.rssdiv);
                    if(!this.rssdiv) { alert('RSS div '+this.options.rssdiv+'bestaat niet.');return;}

                    // click events
                    //reload event
                    if(this.options.reload && this.options.reload!=null && (this.reload = $(this.options.reload))) 
                    { 
                      this.reload.addEvent('click',  this.refresh.bind(this));
                    }
                    //start auto-reloading event
                    if(this.options.start && this.options.start!=null && (this.start = $(this.options.start))) 
                    { 
                      this.start.addEvent('click',  this.refresh.bind(this));
                        // stop  auto-reloading event
                        if(this.options.stop && this.options.stop!=null && (this.stop = $(this.options.stop))) 
                        { 
                          this.stop.addEvent('click',  this.refresh.bind(this));
                        }
                    }
                    
                     this.startajax();
                  },
        
        startit: function(){
                            	$clear(this.options.rss_periodical); 	// prevent numerous requests
                             
                            	/* styles */
                            	this.start.setStyle('font-weight', 'bold');
                            	this.rssdiv.addClass('ajax-loading'); 
                            	this.rssdiv.setStyle('opacity', 0.2);
                            	this.stop.setStyle('font-weight', 'normal');
                             
                              /* request new page  */                             
                            	this.options.rss_periodical = this.refresh.periodical(this.options.timer * 1000, this); 	// the refresh period starts here. time in milliseconds 
                            	this.ajax.request($time()); // 1st request
                             },          

        stopit: function()
                {
                     	this.start.setStyle('font-weight', 'normal');
                    	this.stop.setStyle('font-weight', 'bold');
                     
                    	$clear(this.options.rss_periodical); 	// stop timed ajax
                    	this.ajax.cancel(); 	// stop request - in case it was waiting for a response
    
                 },

        startajax: function()
                   {
                    var ajax2 = new Ajax(this.options.url, { 
                                            	/*update: rssdiv,*/
                                            	method: 'get',
                                            	evalScripts: false,
                                            	onComplete: this.createTable.bind(this),
                                            	onCancel: function() 
                                            	          {
                                                	           this.rssdiv.removeClass('ajax-loading'); 
                                                           	this.rssdiv.setStyle('opacity', 1);
                                            	          }
                                                }, this);

                      this.ajax = ajax2;  
                      randomUrlElement = $time() + $random(0, 100);
                	  this.rssdiv.addClass('ajax-loading');	// activate 'loading' spinner
                   	this.rssdiv.setStyle('opacity', 0.2);
                    this.ajax.request(randomUrlElement); 	
                    },
                    
        refresh : function(bar)
                  {
                      randomUrlElement = $time() + $random(0, 100);
                 	    this.rssdiv.addClass('ajax-loading');	// activate 'loading' spinner
                     	this.rssdiv.setStyle('opacity', 0.2);
                	    this.ajax.request(randomUrlElement); 	
                  },
        
        createTable: function(responseText, responseXML) 
                    {		
                        var tabel = null;
                        if (window.ActiveXObject) // responseXML is leeg in IE7 !
                        {   
                            var xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
                            xmlDoc.loadXML(responseText);
                            responseXML = xmlDoc;
                        }    
                
                        // feed data
                    		var feed_title       = ( responseXML.getElementsByTagName("title")[0].firstChild.data);
                    		var feed_description = ( responseXML.getElementsByTagName("description")[0].firstChild.data);
                    		var feed_link        = ( responseXML.getElementsByTagName("link")[0].firstChild.data);
 
                        // build new html table
 
                    		tabel = new Element('table');
 
                        tabel.addClass('rsstable');
//                        tabel.setStyles({display: 'block',border: '1px solid black', width:'auto !important'});
                    		                             

                     		var tabelheader = new Element('thead').injectInside(tabel);                            		
                     		var headerrow = new Element('tr',{ id: 'rss_hrow'}).injectInside(tabelheader);                            		
                     		var headeritem = new Element('th',{}).setHTML(feed_title).injectInside(headerrow);                            		
                     		var tabelbody = new Element('tbody').injectInside(tabel);                            		
 
 
                    
                    
                        // walk all items
                        newsitems = responseXML.getElementsByTagName('item');
                        alternate=0;    
                        for (i=0; i < newsitems.length; i++)
                        {
                            if (alternate) alternate=0; else alternate=1;
                            
                            //read data
                    	    	var item_title = newsitems[i].getElementsByTagName("title")[0].firstChild.data;
                    	    	var item_description = newsitems[i].getElementsByTagName("description")[0].firstChild.data;
                    	    	var item_guid = newsitems[i].getElementsByTagName("guid")[0].firstChild.data;
                    	    	var item_link = newsitems[i].getElementsByTagName("link")[0].firstChild.data;
                    	    	var item_pubdate = newsitems[i].getElementsByTagName("pubDate")[0].firstChild.data;
                    
                            // inject in table
                            var itemrow = new Element('tr',{
                                                          id: 'rssrow'+i
                                        			}).injectInside(tabelbody);  
                            var itemcell = new Element('td',{
                                                }).injectInside(itemrow);  
                                	itemcell.addClass('alternate'+alternate);
                         		new Element('a',{
                                        			'href' : item_link,
                                        			'styles' : { 
                                        			}
                                        		}).setHTML(item_title).injectInside(itemcell);
                        }
                    
                     this.rssdiv.empty().removeClass('ajax-loading'); 
                    	this.rssdiv.setStyle('opacity', 1);
                     tabel.injectInside(this.rssdiv);
                    
                    }
                    
                  
});

  window.addEvent('domready', function()
        {
            $sitebase = 'http://www.testlokaal.pc/werkmap/rss/html/';
//            $sitebase = 'http://rss.weeronline.nl/';

                       RssFeeder.implement(new Options, new Events);
            if ($('rssdiv_weernieuws'))
                          mijnx = new RssFeeder({url        :   $sitebase+'weernieuws.rss',
                                                  rssdiv        : 'rssdiv_weernieuws',
                                                 reload         : 'reload_weernieuws'
                                                }); 
            if ($('rssdiv_weernieuws2'))
                          mijn2x = new RssFeeder({url           : $sitebase+'weernieuws.rss?n=14',
                                                  rssdiv        : 'rssdiv_weernieuws2',
                                                 timer          : 510,
                                                 reload         : 'reload_weernieuws2',
                                                 start         : 'start_weernieuws2',
                                                  stop          : 'stop_weernieuws2'
                                                }); 
            if ($('rssdiv_weernieuws3'))
                          mijn3x = new RssFeeder({url           :$sitebase+'wind_actueel.rss',
                                                 reload         : 'reload_weernieuws3',
                                                  rssdiv        : 'rssdiv_weernieuws3'
                                                }); 
            
         });