var ItunesSongsPlayer = function(instance, playlist, options) {
	var self = this;

	this.instance = instance; // String: To associate specific HTML with this playlist
	this.playlist = playlist; // Array of Objects: The playlist
	this.options = options; // Object: The jPlayer constructor options for this playlist

	this.current = 0;

	this.cssId = {
		jPlayer: "jquery_jplayer_",
		interface: "jp_interface_",
		playlist: "jp_playlist_"
	};
	this.cssSelector = {};

	$.each(this.cssId, function(entity, id) {
		self.cssSelector[entity] = "#" + id + self.instance;
	});

	if(!this.options.cssSelectorAncestor) {
		this.options.cssSelectorAncestor = this.cssSelector.interface;
	}

	$(this.cssSelector.jPlayer).jPlayer(this.options);

	$(this.cssSelector.interface + " .jp-previous").click(function() {
		self.playlistPrev();
		$(this).blur();
		return false;
	});

	$(this.cssSelector.interface + " .jp-next").click(function() {
		self.playlistNext();
		$(this).blur();
		return false;
	});

	$(this.cssSelector.interface + " .jp-playlist-toggle").click(function() {
		if($(this).hasClass('active')) {
			self.playlistHide();
			$(this).removeClass('active').addClass('inactive');
		}else{
			self.playlistShow();
			$(this).removeClass('inactive').addClass('active');
		}
		return false;
	});

	$(this.cssSelector.interface + " .jp-popout-link").click(function() {
		$(self.cssSelector.jPlayer).jPlayer('pause');
		var current_index = self.current;
		var height = $('div.jp-popout-height').html();
		var popup_window = window.open($(this).attr('href')+'?index='+current_index,'','height='+height+',width=316,menubar=no,scrollbars=no,status=no,location=no,toolbar=no');
		if(window.focus){
			popup_window.focus();
		}
		
		return false;
	});
};

ItunesSongsPlayer.prototype = {
	displayPlaylist: function() {
		var self = this;
		$(this.cssSelector.playlist + " ul").empty();
		for (i=0; i < this.playlist.length; i++) {
			var listItem = (i === this.playlist.length-1) ? "<li class='jp-playlist-last'>" : "<li>";
			listItem += "<a href='#' id='" + this.cssId.playlist + this.instance + "_item_" + i +"' tabindex='1'>"+ this.playlist[i].name +"</a>";

			// Create links to free media
			if(this.playlist[i].free) {
				var first = true;
				listItem += "<div class='jp-free-media'>(";
				$.each(this.playlist[i], function(property,value) {
					if($.jPlayer.prototype.format[property]) { // Check property is a media format.
						if(first) {
							first = false;
						} else {
							listItem += " | ";
						}
						listItem += "<a id='" + self.cssId.playlist + self.instance + "_item_" + i + "_" + property + "' href='" + value + "' tabindex='1'>" + property + "</a>";
					}
				});
				listItem += ")</span>";
			}

			listItem += "</li>";

			// Associate playlist items with their media
			$(this.cssSelector.playlist + " ul").append(listItem);
			$(this.cssSelector.playlist + "_item_" + i).data("index", i).click(function() {
				var index = $(this).data("index");
				if(self.current !== index) {
					self.playlistChange(index);
				} else {
					$(self.cssSelector.jPlayer).jPlayer("play");
				}
				$(this).blur();
				return false;
			});

			// Disable free media links to force access via right click
			if(this.playlist[i].free) {
				$.each(this.playlist[i], function(property,value) {
					if($.jPlayer.prototype.format[property]) { // Check property is a media format.
						$(self.cssSelector.playlist + "_item_" + i + "_" + property).data("index", i).click(function() {
							var index = $(this).data("index");
							$(self.cssSelector.playlist + "_item_" + index).click();
							$(this).blur();
							return false;
						});
					}
				});
			}
		}
	},
	playlistInit: function(autoplay) {
		if(autoplay) {
			this.playlistChange(this.current);
		} else {
			this.playlistConfig(this.current);
		}
	},
	playlistConfig: function(index) {
		$(this.cssSelector.playlist + "_item_" + this.current).removeClass("jp-playlist-current").parent().removeClass("jp-playlist-current");
		$(this.cssSelector.playlist + "_item_" + index).addClass("jp-playlist-current").parent().addClass("jp-playlist-current");
		
		this.current = index;
		
		$(this.cssSelector.interface+' .jp-track-info .jp-track-name').html(this.playlist[this.current].track_name);
		$(this.cssSelector.interface+' .jp-track-info .jp-show-link').html(this.playlist[this.current].show_link);
		
		$(this.cssSelector.jPlayer).jPlayer("setMedia", this.playlist[this.current]);
	},
	playlistChange: function(index) {
		this.playlistConfig(index);
		$(this.cssSelector.jPlayer).jPlayer("play");
	},
	playlistNext: function() {
		var index = (this.current + 1 < this.playlist.length) ? this.current + 1 : 0;
		this.playlistChange(index);
	},
	playlistPrev: function() {
		var index = (this.current - 1 >= 0) ? this.current - 1 : this.playlist.length - 1;
		this.playlistChange(index);
	},
	playlistHide: function(duration) {
		$(this.cssSelector.playlist).slideUp(duration);
	},
	playlistShow: function(duration) {
		$(this.cssSelector.playlist).slideDown(duration);
	}
};

$.jPlayer.prototype.volumeBar = function(e) { // Handles clicks on the volumeBar
	if(!this.status.muted && this.css.jq.volumeBar) { // Ignore clicks when muted
		var offset = this.css.jq.volumeBar.offset();
		var w = this.css.jq.volumeBar.height();
		var y = offset.top - e.pageY + w;
		var v = y/w;
		this.volume(v);
	}
};
$.jPlayer.prototype._updateVolume = function(v) {
	if(this.css.jq.volumeBarValue.length) {
		this.css.jq.volumeBarValue.height((v*100)+"%");
	}
};