/*
News ticker plugin (BBC news style)
Bryan Gullan,2007-2011
version 2.3.6
updated 2011-03-16
Documentation at http://www.makemineatriple.com/news-ticker-documentation/
Demo at http://www.makemineatriple.com/jquery/?newsTicker
Use and distrubute freely with this header intact.
*/




jQuery.noConflict();
jQuery(document).ready(function() {
	
	
	(function($) {
		
		var name='newsTicker';
		var debugMode = false; // enabling this turns on console logging for interactions
		
		function runTicker(settings) {
			
			tickerData = $(settings.newsList).data('newsTicker');
			
			if(tickerData.currentItem > tickerData.newsItemCounter){
				// if we've looped to beyond the last item in the list, start over
				tickerData.currentItem = 0;
			}
			else if (tickerData.currentItem < 0) {
				// if we've looped back before the first item, move to the last one
				tickerData.currentItem = tickerData.newsItemCounter;
			}
			
			if(tickerData.currentPosition == 0) {
				if(tickerData.newsLinks[tickerData.currentItem].length > 0) {
					$(tickerData.newsList).empty().append('<li><a '+ tickerData.newsAttributes[tickerData.currentItem] +'></a></li>');
				}
				else {
					$(tickerData.newsList).empty().append('<li></li>');
				}
			}
			
			//only start the ticker itself if it's defined as animating: otherwise it's paused or under manual advance
			if (tickerData.animating) {
				
				if( tickerData.currentPosition % 2 == 0) {
						var placeHolder = tickerData.placeHolder1;
				}
				else {
					var placeHolder = tickerData.placeHolder2;
				}
				
				if( tickerData.currentPosition < tickerData.newsItems[tickerData.currentItem].length) {
					// we haven't completed ticking out the current item
					
					var tickerText = tickerData.newsItems[tickerData.currentItem].substring(0,tickerData.currentPosition);
					if(tickerData.newsLinks[tickerData.currentItem].length > 0) {
						$(tickerData.newsList + ' li a').text(tickerText + placeHolder);
					}
					else {
						$(tickerData.newsList + ' li').text(tickerText + placeHolder);
					}
					tickerData.currentPosition ++;
					setTimeout(function(){runTicker(settings); settings = null;},tickerData.tickerRate);
				}
				
				else {
					// we're on the last letter of the current item
					
					if(tickerData.newsLinks[tickerData.currentItem].length > 0) {
						$(tickerData.newsList + ' li a').text(tickerData.newsItems[tickerData.currentItem]);
					}
					else {
						$(tickerData.newsList + ' li').text(tickerData.newsItems[tickerData.currentItem]);
					}
					
					setTimeout(function(){
						if (tickerData.animating) {
							tickerData.currentPosition = 0;
							tickerData.currentItem ++;
							runTicker(settings); settings = null;
						}
					},tickerData.loopDelay);
					
				}
			}
			
			else {// settings.animating == false 
				
				// display the full text of the current item
				var tickerText = tickerData.newsItems[tickerData.currentItem];
				
				if(tickerData.newsLinks[tickerData.currentItem].length > 0) {
					$(tickerData.newsList + ' li a').text(tickerText);
				}
				else {
					$(tickerData.newsList + ' li').text(tickerText);
				}
						
			}
			
		}

		
		// Core plugin setup and config
		jQuery.fn[name] = function(options) {
	 
		  // Add or overwrite options onto defaults
		  var settings = jQuery.extend({}, jQuery.fn.newsTicker.defaults, options);
		 
	    var newsItems = new Array();
			var newsLinks = new Array();
			var newsAttributes = new Array();
			var newsItemCounter = 0;
			
			// Hide the static list items
			$(settings.newsList + ' li').hide();
			
			// Store the items and links in arrays for output
			$(settings.newsList + ' li').each(function(){
				if($(this).children('a').length) {
					newsItems[newsItemCounter] = $(this).children('a').text();
					newsLinks[newsItemCounter] = $(this).children('a').attr('href');
					
					var linkAttributes = new Object();
				  	var attrs = $(this).children('a')[0].attributes;
						for (var i=0;i<attrs.length;i++) {
						linkAttributes[attrs[i].nodeName] = attrs[i].nodeValue;
					}
					if (debugMode){ 
						console.log(linkAttributes);
					}
					
			    var linkAttributesProcessed = '';
	 				for (var prop in linkAttributes) {
	 					// print out the attributes as a string ready for output within the anchor tag
	    			linkAttributesProcessed = linkAttributesProcessed + prop + '="' + linkAttributes[prop] + '" ';
	 				}
	 				if (debugMode){ 
						console.log(linkAttributesProcessed);
					}
	 				
					newsAttributes[newsItemCounter] = linkAttributesProcessed;
					
				}
				else {
					newsItems[newsItemCounter] = $(this).text();
					newsLinks[newsItemCounter] = '';
					newsAttributes[newsItemCounter] = '';
				}
				newsItemCounter ++;
			});
	        
	        var tickerElement = $(settings.newsList); // for quick reference below
	        
	        tickerElement.data(name, {
	        	newsList: settings.newsList,
						tickerRate: settings.tickerRate,
						startDelay: settings.startDelay,
						loopDelay: settings.loopDelay,
						placeHolder1: settings.placeHolder1,
						placeHolder2: settings.placeHolder2,
						controls: settings.controls,
						ownControls: settings.ownControls,
						stopOnHover: settings.stopOnHover,
						resumeOffHover: settings.resumeOffHover,
	          newsItems: newsItems,
						newsLinks: newsLinks,
						newsAttributes: newsAttributes,
						newsItemCounter: newsItemCounter - 1, // -1 because we've incremented even after the last item (above)
						currentItem: 0,
						currentPosition: 0,
						firstRun:1
	        })
	        .bind({
				stop: function(event) {
					// show remainder of the current item immediately
			    	tickerData = tickerElement.data(name);
			    	if (tickerData.animating) { // only stop if not already stopped
	            		tickerData.animating = false;
	            		if (debugMode){ 
	            			console.log('stop'+tickerData.currentItem + ' ' + tickerData.animating);
	            		}
	               	}
			  	},
			  	play: function(event) {
			  		// show 1st item with startdelay
			    	tickerData = tickerElement.data(name);
			    	if (!tickerData.animating) { // if already animating, don't start animating again
		            	tickerData.animating = true;
		            	if (debugMode){ 
	            			console.log('play'+tickerData.currentItem + ' ' + tickerData.animating);
	            		}
		            	setTimeout(function(){runTicker(tickerData); tickerData = null;},tickerData.startDelay);
		            }
			  	},
			  	resume: function(event) {
			  		// start from next item, with no delay
			    	tickerData = tickerElement.data(name);
			    	if (!tickerData.animating) { // if already animating, don't start animating again
		            	tickerData.animating = true;
		            	// set the character position as 0 to ensure on resume we start at the right point
						tickerData.currentPosition = 0;
		            	tickerData.currentItem ++;
		            	if (debugMode){ 
	            			console.log('resume'+tickerData.currentItem + ' ' + tickerData.animating);
	            		}
			            runTicker(tickerData); // no delay when resuming.
			        }
			  	},
			  	next: function(event) {
			  		// show whole of next item
			  		tickerData = tickerElement.data(name);
			  		// stop (which sets as non-animating), and call runticker
			  		$(tickerData.newsList).trigger("stop");
			  		// set the character position as 0 to ensure on resume we start at the right point
					tickerData.currentPosition = 0;
		            tickerData.currentItem ++;
		            if (debugMode){ 
	            			console.log('next'+tickerData.currentItem + ' ' + tickerData.animating);
	            		}
			  		runTicker(tickerData);
			  	},
			  	previous: function(event) {
					// show whole of previous item
					tickerData = tickerElement.data(name);
			  		// stop (which sets as non-animating), and call runticker
			  		$(tickerData.newsList).trigger("stop");
			  		// set the character position as 0 to ensure on resume we start at the right point
					tickerData.currentPosition = 0;
		            tickerData.currentItem --;
		            if (debugMode){ 
	            			console.log('previous'+tickerData.currentItem + ' ' + tickerData.animating);
	            		}
			  		runTicker(tickerData);
				}
			}); 	
			if (settings.stopOnHover) {
		    	tickerElement.bind({			    	
				  	mouseover: function(event) {
				  		tickerData = tickerElement.data(name);
				    	if (tickerData.animating) { // stop if not already stopped
					  		$(tickerData.newsList).trigger("stop");
					  		if (tickerData.controls) { // ensure that the ticker can be resumed if controls are enabled
					  			$('.stop').hide();
				        		$('.resume').show();
					  		}
				  		}
				  	}
				});
				if (settings.resumeOffHover) { // only allowed if stopOnHover enabled
			    	tickerElement.bind({			    	
					  	mouseout: function(event) {
					  		tickerData = tickerElement.data(name);
					    	if (!tickerData.animating) { // if already animating, don't start animating again
				            	$(tickerData.newsList).trigger("resume");
				            	if (debugMode){ 
			            			console.log('resumeoffhover'+tickerData.currentItem + ' ' + tickerData.animating);
			            		}
					        }
					  	}
					});
	    		}
	    	}
	    	
	    	tickerData = tickerElement.data(name);
	    	
	    	// set up control buttons if the option is on
			if (tickerData.controls || tickerData.ownControls) {
				if (!tickerData.ownControls) {
					$('<ul class="ticker-controls"><li class="play"><a href="#play">Play</a></li><li class="resume"><a href="#resume">Resume</a></li><li class="stop"><a href="#stop">Stop</a></li><li class="previous"><a href="#previous">Previous</a></li><li class="next"><a href="#next">Next</a></li></ul>').insertAfter($(tickerData.newsList));
				}
				$('.play').hide();
			    $('.resume').hide();
				
			    $('.play').click(function(event){
			        $(tickerData.newsList).trigger("play");
			        $('.play').hide();
			        $('.resume').hide();
			        $('.stop').show();
			        event.preventDefault();
			    });
			    $('.resume').click(function(event){
			        $(tickerData.newsList).trigger("resume");
			        $('.play').hide();
			        $('.resume').hide();
			        $('.stop').show();
			        event.preventDefault();
			    });
				$('.stop').click(function(event){
			        $(tickerData.newsList).trigger("stop");
			        $('.stop').hide();
			        $('.resume').show();
			        event.preventDefault();
			    });
			    $('.previous').click(function(event){
			        $(tickerData.newsList).trigger("previous");
			        $('.stop').hide();
				    $('.resume').show();
			        event.preventDefault();
			    });
			    $('.next').click(function(event){
			        $(tickerData.newsList).trigger("next");
			        $('.stop').hide();
				    $('.resume').show();
			        event.preventDefault();
			    });

		    };
	    	
	    	// tell it to play
	    	$(tickerData.newsList).trigger("play");
		};

		// News ticker defaults 
		jQuery.fn[name].defaults = {
		  newsList: "#news",
			tickerRate: 80,
			startDelay: 100,
			loopDelay: 3000,
			placeHolder1: " |",
			placeHolder2: "_",
			controls: true,
			ownControls: false,
			stopOnHover: true,
			resumeOffHover: false
		}

	})(jQuery);

jQuery().newsTicker({newsList: "#left-news",startDelay: 10,placeHolder1: " _"});

});