/*
    This file is part of JonDesign's SmoothSlideshow v2.0.

    JonDesign's SmoothSlideshow is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    JonDesign's SmoothSlideshow 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 Foobar; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Main Developer: Jonathan Schemoul (JonDesign: http://www.jondesign.net/)
    Contributed code by:
    - Christian Ehret (bugfix)
    - Simon Willison (addLoadEvent)
*/

// declaring the class
var timedSlideShow = Class.create();

// implementing the class
timedSlideShow.prototype = {
	initialize: function(element, data) {
		this.currentIter = 0;
		this.lastIter = 0;
		this.maxIter = 0;
		this.slideShowElement = element;
		this.slideShowData = data;
		this.slideShowInit = 1;
		this.slideElements = Array();
		this.slideShowDelay = 9000;
		this.articleLink = "";
		this.slideInfoZone = "";

		element.style.display="block";

		this.articleLink = document.createElement('a');
		this.articleLink.className = 'global';
		element.appendChild(this.articleLink);
		this.articleLink.href = "";

		this.maxIter = data.length;
		for(i=0;i<data.length;i++)
		{
			var currentImg = document.createElement('div');
			currentImg.className = "slideElement";
			currentImg.style.position="absolute";
			currentImg.style.left="0px";
			currentImg.style.top="0px";
			currentImg.style.margin="0px";
			currentImg.style.border="0px";
			currentImg.style.backgroundImage="url('" + data[i][0] + "')";
			currentImg.style.backgroundPosition="center center";

			this.articleLink.appendChild(currentImg);
			currentImg.currentOpacity = new fx.Opacity(currentImg, {duration: 400});
			currentImg.setStyle('opacity',0);
			this.slideElements[parseInt(i)] = currentImg;
		}

		this.slideInfoZone = document.createElement('div');
		this.slideInfoZone.className = 'slideInfoZone';
		this.articleLink.appendChild(this.slideInfoZone);
		this.slideInfoZone.style.opacity = 0;

		this.doSlideShow();
	},
	destroySlideShow: function(element) {
		var myClassName = element.className;
		var newElement = document.createElement('div');
		newElement.className = myClassName;
		element.parentNode.replaceChild(newElement, element);
	},
	startSlideShow: function() {
		this.lastIter = this.maxIter - 1;
		this.currentIter = 0;
		this.slideShowInit = 0;
		this.slideElements[parseInt(this.currentIter)].setStyle('opacity', 1);
		setTimeout(this.showInfoSlideShow.bind(this),1000);
		setTimeout(this.hideInfoSlideShow.bind(this),this.slideShowDelay-1000);
		setTimeout(this.nextSlideShow.bind(this),this.slideShowDelay);
	},
	nextSlideShow: function() {
		this.lastIter = this.currentIter;
		this.currentIter++;
		if (this.currentIter >= this.maxIter)
		{
			this.currentIter = 0;
			this.lastIter = this.maxIter - 1;
		}
		this.slideShowInit = 0;
		this.doSlideShow.bind(this)();
	},
	doSlideShow: function() {
		if (this.slideShowInit == 1)
		{
			setTimeout(this.startSlideShow.bind(this),10);
		} else {
			if (this.currentIter != 0) {
				this.slideElements[parseInt(this.currentIter)].currentOpacity.options.onComplete = function() {
					this.slideElements[parseInt(this.lastIter)].setStyle('opacity',0);
				}.bind(this);
				this.slideElements[parseInt(this.currentIter)].currentOpacity.custom(0, 1);
			} else {
				this.slideElements[parseInt(this.currentIter)].setStyle('opacity',1);
				this.slideElements[parseInt(this.lastIter)].currentOpacity.custom(1, 0);
			}
			setTimeout(this.showInfoSlideShow.bind(this),1000);
			setTimeout(this.hideInfoSlideShow.bind(this),this.slideShowDelay-1000);
			setTimeout(this.nextSlideShow.bind(this),this.slideShowDelay);
		}
	},
	showInfoSlideShow: function() {
		this.articleLink.removeChild(this.slideInfoZone);
		this.slideInfoZone = document.createElement('div');
		this.slideInfoZone.styles = new fx.Styles(this.slideInfoZone);
		this.slideInfoZone.setStyle('opacity',0);
		var slideInfoZoneTitle = document.createElement('h2');
		slideInfoZoneTitle.innerHTML = this.slideShowData[this.currentIter][2]
		this.slideInfoZone.appendChild(slideInfoZoneTitle);
		//var slideInfoZoneDescription = document.createElement('span');
		//slideInfoZoneDescription.innerHTML = this.slideShowData[this.currentIter][3];
		//this.slideInfoZone.appendChild(slideInfoZoneDescription);
		this.articleLink.appendChild(this.slideInfoZone);
		this.articleLink.href = this.slideShowData[this.currentIter][1];
		this.slideInfoZone.className = 'slideInfoZone';
		this.slideInfoZone.styles.custom({'opacity': [0, 0.8], 'height': [0, this.slideInfoZone.getStyle('height', true)]});
	},
	hideInfoSlideShow: function() {
		this.slideInfoZone.styles.custom({'opacity': [0.8, 0], 'height': [this.slideInfoZone.getStyle('height', true),0]});
	}
};

function initTimedSlideShow(element, data) {
	var slideshow = new timedSlideShow(element, data);
}

function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}

// gets initial data, when page first loads
function getData() {
    // set interval for songupdates
    var dummy = setInterval("doUpdates('currentTrackInfo',updateSongSlide)",15000);
    // get initial data to set page
    doUpdates('all',setPage);
}

function doUpdates(type, fireFunc) {
    new ajax('getSong.jsp',{method:'post',postBody:'type='+type,onComplete: fireFunc}).request();
}
   
function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			oldonload();
			func();
		};
	}
}

// gets initial data, when page first loads
function getData() {
    // set interval for songupdates
    // var dummy = setInterval("doUpdates('currentTrackInfo',updateSongSlide)",15000);
    // get initial data to set page
    // doUpdates('all',setPage);
     doUpdates('radioAndDj',setPage);
}

function doUpdates(type, fireFunc) {
    new ajax('getSong.jsp',{method:'post',postBody:'type='+type,onComplete: fireFunc}).request();
}
   
function startSlideshow() {
    slideshow = new timedSlideShow($('mySlideshow'), mySlideData);
}

function setPage(request) {
    daVars = Json.evaluate(request);
    doFirstShowUpdateAt = (61 - parseInt(daVars.currentMinutes)) * 1000 ;
    setTimeout("startShowUpdates()",doFirstShowUpdateAt);
    countArticle = 0;
    mySlideData = new Array();
    mySlideData[countArticle++] = new Array('img/frequentie.jpg','wayContent.jsp?cardid=94&clicklevel=1&showterug=F&artikel=menu_frequentie','', '<b><center>en via de digitale ontvanger<br> op 830</center></b>');
    mySlideData[countArticle++] = new Array(daVars.djFoto,'showProgramms.jsp?formAction=prog&prgId='+daVars.currentShowId,'Now on air: ',daVars.currentShowName);
    startSlideshow();
    
}

// update song
function updateSongSlide(request) {
    daSongVars = Json.evaluate(request);
    slideshow.slideShowData[0] = new Array('slide/images/test/1.jpg','songStreamInfo.jsp','Now playing:',daSongVars.songArtist + ' - ' + daSongVars.songTrack);
    // If user is looking at detail page,might as well update info there too.
    if (parent.main.document.getElementById('currentSong')) {
	parent.main.updateSong(daSongVars.songArtist + ' - ' + daSongVars.songTrack);
    }	

}
//update slide
function updateShowSlide(request) {
    daShowVars = Json.evaluate(request);
    mySlideData[1] = new Array(daShowVars.djFoto,'showProgramms.jsp?formAction=prog&prgId='+daShowVars.currentShowId,'Now on air: ',daShowVars.currentShowName);
}   

function startShowUpdates() {
   doUpdates('radioAndDj',updateShowSlide);
   setInterval("doUpdates('radioAndDj',updateShowSlide)",3600000);
}

function showSlideLink(){
    top.main.location = slideshow.articleLink.href;
}