/*
Plugin Name: Anyfeed Slideshow
Plugin URI: http://tixen.net/anyfeed-slideshow/
Description: A quick and easy jQuery based slideshow widget, fed from absolutely any XML/RSS/ATOM feed that contains images!
Version: 1.0.5
Author: Soleil Golden
Author URI: http://tixen.net/
License: GPL 2.0

	Copyright 2010,  Soleil Golden  (email : soleil@tixen.net)
	
	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License, version 2, as 
	published by the Free Software Foundation.
	
	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.
	
	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

function anyfeed_slideshow(options) {
/*--------------------------- Global Variables -------------------------*/
var pause_rate=5000,fade_rate=1000,loading_text='Loading...',media_type='content';
var container="#anyfeed_slideshow_main",xml_url="temp.xml",c_width="100%";
var c_height="200px",navigation=true,title_bar=true,bgcolor='transparent',debug=false;
var total=0,loaded=0,slideshow_handle,loading_handle,slide_i=(-1),started=false;
var titlebar,fish,url,re;
for (var key in options) { if(eval(key+'!== undefined')) { eval(key+' = options.'+key+';'); } }

/*----------------------------------------------------------------------*/
	
	this.init = function() {
		
		// Set width and height
		jQuery(container).css({width: c_width, height: c_height});
		
		anyfeed.loading_start();
		if(debug) { console.group("Parsing XML"); }
		jQuery.ajax({
			type: "GET",
			url: xml_url,
			dataType: "xml",
			timeout: 5000,
			success: function(xml) {
				if(navigation) { jQuery(container).html(jQuery(container).html()+'<div class="anyfeed_navigation anyfeed_slide_next" onclick="anyfeed.next();"></div><div class="anyfeed_navigation anyfeed_slide_prev" onclick="anyfeed.prev();"></div>'); }
				var counter = 0;
				var media;
				jQuery(xml).find('rss').each(function(){ if(jQuery(this).attr('xmlns:media')){media = true;} else{media = false;} });
				if(media){
// Media feed (Flikr, Yahoo, etc)
					jQuery(xml).find('item').each(function(){
						var title = jQuery(this).find('title').text();
						var link = jQuery(this).find('link').text();
						if(debug) { console.log("Trying to parse media feed."); }
						jQuery(this).find('[nodeName=media:'+media_type+']').each(function(){if(debug) { console.log("Successful- pulling image."); }
		
							url = jQuery(this).attr('url');
							if(debug) { console.log(url); }
							if(url === null || url === "" || url === undefined) { if(debug) { console.log("Skipped."); } }
							else{
								var i1 = new Image();
								i1.onload = function() {
									loaded = loaded + 1;
									if(loaded >= counter){ 
										total = counter -1;
										anyfeed.loading_stop(pause_rate + fade_rate);
										anyfeed.start();
									}
								};
								
								i1.src = url;
								if(title_bar){ titlebar='<div class="anyfeed_titlebar">'+title+'</div>';} else{ titlebar = ''; }
								jQuery(container).html(jQuery(container).html()+'<div class="anyfeed_photo" id="anyfeed_photo_'+counter+'" style="background-image: url(\''+url+'\'); background-color: '+bgcolor+';" onclick="window.open(\''+link+'\', \'_blank\');">'+titlebar+'</div>');												
								counter = counter + 1;
								if(debug) { console.log("Added."); }
							} 
						});
					});
				} else { 
// Regular RSS Feed	(prep)				
					if(debug) { console.log("Trying to parse RSS feed."); }
					jQuery(xml).find('item').each(function(){
						var tmpcounter = 0;
						var title = jQuery(this).find('title').text();
						var link = jQuery(this).find('link').text();
						if(debug) { console.group("Title: " + title); }
							
// Regular RSS Feed
						if(debug) { console.log("Attempting to find image attachments"); }
						jQuery(this).find('enclosure').each(function(){ 
							if(debug) { console.info("Feed with image attachments"); }
							tmpcounter += 1;
		
							url = jQuery(this).attr('url');
							if(debug) { console.log(url); }
							if(url === null || url === "" || url === undefined) { if(debug) { console.log("Skipped."); } }
							else{
								var i1 = new Image();
								i1.onload = function() {
									if(debug) { console.info("Loading... %a / %b", counter, loaded + 1); }
									loaded = loaded + 1;
									if(loaded >= counter){ 
										total = counter -1;
										anyfeed.loading_stop(pause_rate + fade_rate);
										anyfeed.start();
									}
								};
								i1.src = url;
								if(title_bar){ titlebar='<div class="anyfeed_titlebar">'+title+'</div>';} else{ titlebar = ''; }
								jQuery(container).html(jQuery(container).html()+'<div class="anyfeed_photo" id="anyfeed_photo_'+counter+'" style="background-image: url(\''+url+'\'); background-color: '+bgcolor+';" onclick="window.open(\''+link+'\', \'_blank\');">'+titlebar+'</div>');					
								counter = counter + 1;
								if(debug) { console.log("Added."); }
							}
						});
						

// Feed without image attachments
						if(tmpcounter === 0) { 
							if(debug) { console.log("Attempting to find XML Content:encoded..."); }
							fish = jQuery(this).find('[nodeName=content:encoded]').text();
							if(fish) {
								url = jQuery(fish).find('img').attr('src');
							if(url === null || url === "" || url === undefined) { if(debug) { console.log("Skipped."); } }
								else{
									if(debug) { console.info("Feed without image attachments"); }
									if(debug) { console.log("URL: " + url); }
									tmpcounter += 1;
									var i1 = new Image();
									i1.onload = function() {
										if(debug) { console.info("Loading... %a / %b", counter, loaded + 1); }
										loaded = loaded + 1;
										if(loaded >= counter){ 
											total = counter -1;
											anyfeed.loading_stop(pause_rate + fade_rate);
											anyfeed.start();									
										}
									};
									i1.src = url;
									if(title_bar){ titlebar='<div class="anyfeed_titlebar">'+title+'</div>';} else{ titlebar = ''; }
									jQuery(container).html(jQuery(container).html()+'<div class="anyfeed_photo" id="anyfeed_photo_'+counter+'" style="background-image: url(\''+url+'\'); background-color: '+bgcolor+';" onclick="window.open(\''+link+'\', \'_blank\');">'+titlebar+'</div>');
									counter = counter + 1;
									if(debug) { console.log("Added."); }
								}
							} // end check fish for content
						} // End feed without image attachments
						
// Feed without Content, only descriptions
						if(tmpcounter === 0) { 
							if(debug) { console.log("Attempting to find images in description text..."); }
							fish = jQuery(this).find('description').text();
							re = new RegExp("/(<img )/", "i");
							var m = re.exec(url);
							if(m!==null) { 
								url = jQuery(fish).find('img').attr('src');
								re = new RegExp("/(.*feedburner.*|.*ads\..*)/", "i");
								m = re.exec(url);
								if(debug) { console.log("Regex Test: " + m); }
								if (m===null && url!==undefined) {
								if(debug) { console.info("Feed without content "); }
								if(debug) { console.log("URL: " + url); }
									tmpcounter + 1;
									var i1 = new Image();
									i1.onload = function() {
										if(debug) { console.info("Loading... %a / %b", counter, loaded + 1); }
										loaded = loaded + 1;
										if(loaded >= counter){ 
											total = counter -1;
											anyfeed.loading_stop(pause_rate + fade_rate);
											anyfeed.start();									
										}
									};
									i1.src = url;
									if(title_bar){ titlebar='<div class="anyfeed_titlebar">'+title+'</div>';} else{ titlebar = ''; }
									jQuery(container).html(jQuery(container).html()+'<div class="anyfeed_photo" id="anyfeed_photo_'+counter+'" style="background-image: url(\''+url+'\'); background-color: '+bgcolor+';" onclick="window.open(\''+link+'\', \'_blank\');">'+titlebar+'</div>');
	
									if(debug) { console.log("%a Added.", counter); }
									counter = counter + 1;
								}  else { if(debug) { console.log("skipped."); } }
							}  else { if(debug) { console.log("Nothing here! Skipping."); } }
							
						} // End feed without content
						
					if(debug) { console.groupEnd(); }
						
					});
				}

				if(counter === 0) {return false;}
				jQuery(container).hover(
					function() { 
						if(started){
							jQuery("div.anyfeed_titlebar").fadeIn(fade_rate / 5);
							if(total > 0)jQuery("div.anyfeed_navigation").fadeIn(fade_rate / 5);
							setTimeout(function() {jQuery("div.anyfeed_titlebar").css({display: "block"});},fade_rate / 3);
							if(total > 0)setTimeout(function() {jQuery("div.anyfeed_navigation").css({display: "block"});},fade_rate / 3);
						}
						clearTimeout(slideshow_handle); 
					}, function () { 
						if(started){
							jQuery("div.anyfeed_titlebar").fadeOut(fade_rate / 2);
							if(total > 0) jQuery("div.anyfeed_navigation").fadeOut(fade_rate / 2);
							setTimeout(function() {jQuery("div.anyfeed_titlebar").css({display: "none"});},fade_rate / 2);
						}
						anyfeed.start();
					}
				);
			
	if(debug) { console.groupEnd(); }
	if(debug) { console.group("Loading Images..."); }
	
			},
			error: function() {
				if(debug){jQuery(container).html("Failed to retreive XML file."); }
			}
		});
	}
	
	
	this.start = function() {
		if(debug) { console.groupEnd(); }
		if(total === 0){ 
			anyfeed.loading_stop(1);
			jQuery("#anyfeed_photo_0").fadeIn(fade_rate);
			return false;
		}
		slideshow_handle = setInterval(function() {
			if(slide_i >= total){
				var fadethis="#anyfeed_photo_"+(total);
				slide_i = 0; 
			} else { 
				var fadethis = "#anyfeed_photo_"+(slide_i);
				slide_i = slide_i + 1;
			}	
			setTimeout(function(){
				jQuery(fadethis).fadeOut(fade_rate);
			}, fade_rate / 2);
			jQuery("#anyfeed_photo_"+slide_i).fadeIn(fade_rate);
		}, pause_rate + fade_rate);
	}
	
	this.next = function(){
			if(slide_i >= total){
				var fadethis="#anyfeed_photo_"+(total);  
				slide_i = 0; 
			} else { 
				var fadethis="#anyfeed_photo_"+(slide_i);
				slide_i = slide_i + 1;
			}
		setTimeout(function(){
			jQuery(fadethis).fadeOut(fade_rate / 3);
		}, fade_rate / 6);
		jQuery("#anyfeed_photo_"+slide_i).fadeIn(fade_rate / 3);
	}	
	
	this.prev = function(){
		if(slide_i <= 0){
			var fadethis="#anyfeed_photo_0"; 
			slide_i = total; 
		}else {
			var fadethis="#anyfeed_photo_"+slide_i;
			slide_i = slide_i - 1;
		}
		setTimeout(function(){
			jQuery(fadethis).fadeOut(fade_rate / 3);
		}, fade_rate / 6);
		jQuery("#anyfeed_photo_"+slide_i).fadeIn(fade_rate / 3);
	}

	this.loading_start = function() {
		jQuery(container).html('<div id="anyfeed_slideshow_loading">'+loading_text+'</div>');
		jQuery('#anyfeed_slideshow_loading').css({opacity: 0.1});
		loading_handle = setInterval(function() {
			jQuery("#anyfeed_slideshow_loading").animate( { opacity: 0.5	}, 1400, function() {
				jQuery("#anyfeed_slideshow_loading").animate( { opacity: 0.1	}, 1400);
			});
		}, 3000); // End setInterval
	} // End loading_start
		
			
	this.loading_stop = function(when) {
		setTimeout(function(){
			clearTimeout(loading_handle);
			jQuery('#anyfeed_slideshow_loading').stop(true).fadeOut();
			started=true;
		}, when);
	} // End loading_stop
	
	this.test = function() {
		alert(started);	
	}
	
} // End Class function