/*
    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 = 5000;
		this.articleLink = "javascript:;";
		this.slideInfoZone = "";
		
		element.style.display="block";

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

		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";
			*/
			
			var currentImg = document.createElement('img');
			currentImg.slideShowDiv = element;
			currentImg.parentDiv = document.getElementById(element.id + "_zoom_" + (i+1));
			currentImg.src = data[i][0];
			currentImg.srcZoom = data[i][1];
			currentImg.width = data[i][4];
			currentImg.height = data[i][5];
			currentImg.alt = data[i][3];
			currentImg.className = "slideElement";
			currentImg.style.position="absolute";
			currentImg.style.left="0px";
			currentImg.style.top="0px";
			currentImg.style.margin="0px";
			currentImg.style.border="0px";
			if (data[i][1].length > 0) {
				currentImg.style.cursor = "pointer";
			} else {
				currentImg.style.cursor = "default";
			}
			if (data[i][6] != "") {
				currentImg.useMap = "#" + data[i][6];
				element.appendChild(currentImg);
			}
			
			this.articleLink.appendChild(currentImg);
			currentImg.currentOpacity = new fx.Opacity(currentImg, {duration: 400});
			currentImg.setStyle('opacity',0);
			this.slideElements[parseInt(i)] = currentImg;
		}
		
		this.loadingElement = document.createElement('div');
		this.loadingElement.className = 'loadingElement';
		this.articleLink.appendChild(this.loadingElement);
		
		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.loadingElement.style.display = "none";
		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);
		this.showHideDescription(this.currentIter);
		// don't slideshow if there's only one image
		if (this.slideShowData.length > 1) {
			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.slideShowData[0][6] == "" && this.slideShowData[0][1].length > 0) {
			if (window.addEventListener) {
				this.slideShowElement.removeEventListener("click", this.zoom, false);
				this.slideShowElement.addEventListener("click", this.zoom, false);
			} else {
				this.slideShowElement.detachEvent("onclick", this.zoom);
				this.slideShowElement.attachEvent("onclick", this.zoom);
			}
		}
		if (this.slideShowInit == 1)
		{
			imgPreloader = new Image();
			// once image is preloaded, start slideshow
			imgPreloader.onload=function(){
				setTimeout(this.startSlideShow.bind(this),10);
			}.bind(this);
			imgPreloader.src = this.slideShowData[0][0];
		} 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);
			this.showHideDescription(this.currentIter);
			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('p');
		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.normalHeight = this.slideInfoZone.getStyle('height', true).toInt();
		this.slideInfoZone.styles.custom({'opacity': [0, 0.7], 'height': [0, this.slideInfoZone.normalHeight]});
	},
	hideInfoSlideShow: function() {
		this.slideInfoZone.styles.custom({'opacity': [0.7, 0]});
	},
	zoom: function(evt) {
		var e_out;
		var ie_var = "srcElement";
		var moz_var = "target";
		// "target" for Mozilla, Netscape, Firefox et al. ; "srcElement" for IE
		if (evt[moz_var]) {
			e_out = evt[moz_var];
		} else {
			e_out = evt[ie_var];
		}
		if (e_out.srcZoom.length > 0) {
			var winRef = window.open('' + e_out.srcZoom, '' + e_out.alt, '');
			if (window.focus) {
				winRef.focus();
			}
		}
		
		/*
		e_out.parentDiv.style.position = "absolute";
		e_out.parentDiv.style.left = e_out.slideShowDiv.offsetLeft - 50;
		e_out.parentDiv.style.top = e_out.slideShowDiv.offsetTop -50;
		e_out.parentDiv.style.margin = "0";
		e_out.parentDiv.style.padding = "0";
		e_out.parentDiv.style.border = "1px solid gray";
		e_out.parentDiv.style.cursor = "pointer";
		e_out.parentDiv.style.display = "block";
		*/
	},
	showHideDescription: function(current) {
		//alert("current: "+current);
		for (i=0; i < this.maxIter; i++) {
			if (document.getElementById(this.slideShowElement.id + "_text_" + (i+1))) {
				if (current == i) {
						document.getElementById(this.slideShowElement.id + "_text_" + (i+1)).style.display = "block";
				} else {
						document.getElementById(this.slideShowElement.id + "_text_" + (i+1)).style.display = "none";
				}
			}
		}
	}
};

function initTimedSlideShow(element, data) {
	//alert("test");
	var slideshow = new timedSlideShow(element, data);
	function slideFromFlash(id) {
		//alert("slideFromFlash - id: "+id);
		slideshow.showHideDescription(id);
	}
}
//function slideFromFlash(id){	
//alert("id: "+id);
function slideFromFlash(id,img_count){
	//for (i=0; i < 3; i++) {			
	for (i=0; i < img_count; i++) {			
		if (document.getElementById("teaser_segment_program_text_" + (i+1))) {
			if (id == i) {
					document.getElementById("teaser_segment_program_text_" + (i+1)).style.display = "block";
			} else {
					document.getElementById("teaser_segment_program_text_" + (i+1)).style.display = "none";
			}
		} 
	}
}
function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}