// -----------------------------------------------------------------------------------
//
//	Lightbox v2.04
//	by Lokesh Dhakar - http://www.lokeshdhakar.com
//	Last Modification: 2/9/08
//
//	For more information, visit:
//	http://lokeshdhakar.com/projects/lightbox2/
//
//	Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
//  	- Free for use in both personal and commercial projects
//		- Attribution requires leaving author name, author link, and the license info intact.
//
//  Thanks: Scott Upton(uptonic.com), Peter-Paul Koch(quirksmode.com), and Thomas Fuchs(mir.aculo.us) for ideas, libs, and snippets.
//  		Artemy Tregubenko (arty.name) for cleanup and help in updating to latest ver of proto-aculous.
//
// -----------------------------------------------------------------------------------

/** This script is a hacked version, if you need one, grap it from Lokesh's side!
  * $Id: HN_lightbox.js,v 1.4.2.7 2010/04/16 19:55:57 horst Exp $
  **/

//  Configuration
//

if (typeof(topMarginScaler) === 'undefined' || typeof(topMarginScaler) !== 'number' || topMarginScaler <= 4)
{
	var topMarginScaler = 10;
}

if (typeof(useFixedTopborder) === 'undefined' || typeof(useFixedTopborder) !== 'number' || useFixedTopborder < 0)
{
	var useFixedTopborder = 0;
}

if (typeof(useLanguage) === 'undefined' || typeof(useLanguage) !== 'string' || (useLanguage !== 'en' && useLanguage !== 'de'))
{
	var useLanguage = 'de';
}

var zeit = new Date();
if (useLanguage === 'en')
{
	var labelImage = '&copy;' + zeit.getFullYear() + ' Horst Nogajski <span class="LOGO_kamera_mini">&nbsp;</span><span class="LOGO_dot_mini color_fg_2">•</span><span class="LOGO_kamera_mini">&nbsp;</span> Photodesign :: Image';
	var labelOf = 'of';
}
else
{
	var labelImage = '&copy;' + zeit.getFullYear() + ' Horst Nogajski <span class="LOGO_kamera_mini">&nbsp;</span><span class="LOGO_dot_mini color_fg_2">•</span><span class="LOGO_kamera_mini">&nbsp;</span> Photodesign :: Bild';
	var labelOf = 'von';
}

LightboxOptions = Object.extend({
    fileLoadingImage:        '/portfolio/loading.gif',
    fileBottomNavCloseImage: '/portfolio/closelabel.gif',
    overlayOpacity: 0.7,    // controls transparency of shadow overlay
    animate: true,          // toggles resizing animations
    resizeSpeed: 8,         // controls the speed of the image resizing animations (1=slowest and 10=fastest)
    borderSize: 10,         //if you adjust the padding in the CSS, you will need to update this variable
	topMarginScaler: topMarginScaler,      // default = 10, höhere Zahl = kleinerer TopMargin
	useFixedTopborder: useFixedTopborder,  // default = 0 = disabled = variables TopMargin, Zahl > 0 = Abstand in Pixel und enabled
	// When grouping images this is used to write: Image # of #.
	// Change it for non-english localization
	labelImage: labelImage,
	labelOf: labelOf
}, window.LightboxOptions || {});

// -----------------------------------------------------------------------------------

var Lightbox = Class.create();

Lightbox.prototype = {
    imageArray: [],
    activeImage: undefined,
	lastImage: undefined,
	lastIcw: undefined,
	lastIch: undefined,

    // initialize()
    // Constructor runs on completion of the DOM loading. Calls updateImageList and then
    // the function inserts html at the bottom of the page which is used to display the shadow
    // overlay and the image container.
    //
    initialize: function() {

        this.updateImageList();

        this.keyboardAction = this.keyboardAction.bindAsEventListener(this);

        if (LightboxOptions.resizeSpeed > 10) LightboxOptions.resizeSpeed = 10;
        if (LightboxOptions.resizeSpeed < 1)  LightboxOptions.resizeSpeed = 1;

	    this.resizeDuration = LightboxOptions.animate ? ((11 - LightboxOptions.resizeSpeed) * 0.15) : 0;
	    this.overlayDuration = LightboxOptions.animate ? 0.2 : 0;  // shadow fade in/out duration

        var size = (LightboxOptions.animate ? 250 : 1) + 'px';
        var objBody = $$('body')[0];

		objBody.appendChild(Builder.node('div',{id:'overlay'}));

        objBody.appendChild(Builder.node('div',{id:'lightbox'}, [
            Builder.node('div',{id:'outerImageContainer'},
                Builder.node('div',{id:'imageContainer'}, [
                    Builder.node('img',{id:'lightboxImage'}),
                    Builder.node('div',{id:'hoverNav'}, [
                        Builder.node('a',{id:'prevLink', href: '#' }),
                        Builder.node('a',{id:'nextLink', href: '#' })
                    ]),
                    Builder.node('div',{id:'loading'},
                        Builder.node('a',{id:'loadingLink', href: '#' },
                            Builder.node('img', {src: LightboxOptions.fileLoadingImage})
                        )
                    )
                ])
            ),
            Builder.node('div', {id:'imageDataContainer'},
                Builder.node('div',{id:'imageData'}, [
                    Builder.node('div',{id:'imageDetails'}, [
                        Builder.node('span',{id:'caption'}),
                        Builder.node('span',{id:'numberDisplay'})
                    ]),
                    Builder.node('div',{id:'bottomNav'},
                        Builder.node('a',{id:'bottomNavClose', href: '#' },
                            Builder.node('img', { src: LightboxOptions.fileBottomNavCloseImage })
                        )
                    )
                ])
            )
        ]));


		$('overlay').hide().observe('click', (function() { this.end(); }).bind(this));
		$('lightbox').hide().observe('click', (function(event) { if (event.element().id == 'lightbox') this.end(); }).bind(this));
		$('outerImageContainer').setStyle({ width: size, height: size });
		$('imageDataContainer').setStyle({ width: '0'});
		$('prevLink').observe('click', (function(event) { event.stop(); this.changeImage(this.activeImage - 1); }).bindAsEventListener(this));
		$('nextLink').observe('click', (function(event) { event.stop(); this.changeImage(this.activeImage + 1); }).bindAsEventListener(this));
		$('loadingLink').observe('click', (function(event) { event.stop(); this.end(); }).bind(this));
		$('bottomNavClose').observe('click', (function(event) { event.stop(); this.end(); }).bind(this));

        var th = this;
        (function(){
            var ids =
                'overlay lightbox outerImageContainer imageContainer lightboxImage hoverNav prevLink nextLink loading loadingLink ' +
                'imageDataContainer imageData imageDetails caption numberDisplay bottomNav bottomNavClose';
            $w(ids).each(function(id){ th[id] = $(id); });
        }).defer();

		this.initialscaling();
    },

    //
    // updateImageList()
    // Loops through anchor tags looking for 'lightbox' references and applies onclick
    // events to appropriate links. You can rerun after dynamically adding images w/ajax.
    //
    updateImageList: function() {
        this.updateImageList = Prototype.emptyFunction;

        document.observe('click', (function(event){
            var target = event.findElement('a[rel^=lightbox]') || event.findElement('area[rel^=lightbox]');
            if (target) {
                event.stop();
                this.start(target);
            }
        }).bind(this));
    },

    //
    //  start()
    //  Display overlay and lightbox. If image is part of a set, add siblings to imageArray.
    //
    start: function(imageLink) {

        $$('select', 'object', 'embed').each(function(node){ node.style.visibility = 'hidden' });

        // stretch overlay to fill page and fade in
        var arrayPageSize = this.getPageSize();
        $('overlay').setStyle({ width: arrayPageSize[0] + 'px', height: arrayPageSize[1] + 'px' });

        new Effect.Appear(this.overlay, { duration: this.overlayDuration, from: 0.0, to: LightboxOptions.overlayOpacity });

        this.imageArray = [];
        var imageNum = 0;

        if ((imageLink.rel == 'lightbox')){
            // if image is NOT part of a set, add single image to imageArray
            this.imageArray.push([imageLink.href, imageLink.title]);
        } else {
            // if image is part of a set..
            this.imageArray =
                $$(imageLink.tagName + '[href][rel="' + imageLink.rel + '"]').
                collect(function(anchor){ return [anchor.href, anchor.title]; }).
                uniq();

            while (this.imageArray[imageNum][0] != imageLink.href) { imageNum++; }
        }

        // calculate top and left offset for the lightbox
        var arrayPageScroll = document.viewport.getScrollOffsets();
		if(LightboxOptions.useFixedTopborder>0)
		{
			var lightboxTop = arrayPageScroll[1] + LightboxOptions.useFixedTopborder;
		}
		else
		{
			var lightboxTop = arrayPageScroll[1] + (document.viewport.getHeight() / LightboxOptions.topMarginScaler);
		}
        var lightboxLeft = arrayPageScroll[0];
        this.lightbox.setStyle({ top: lightboxTop + 'px', left: lightboxLeft + 'px' }).show();

        this.changeImage(imageNum);
    },

    //
    //  changeImage()
    //  Hide most elements and preload image in preparation for resizing image container.
    //
    changeImage: function(imageNum)
	{
		if(imageNum==null || (typeof(imageNum)==='undefined' && typeof(this.lastImage)!='undefined'))
		{
			imageNum = this.lastImage;
		}
		this.lastImage = imageNum;
        this.activeImage = imageNum; // update global var

        // hide elements during transition
        if (LightboxOptions.animate) this.loading.show();
        this.lightboxImage.hide();
        this.hoverNav.hide();
        this.prevLink.hide();
        this.nextLink.hide();
		// HACK: Opera9 does not currently support scriptaculous opacity and appear fx
			//this.imageDataContainer.setStyle({opacity: .0001});
			//this.numberDisplay.hide();

        var imgPreloader = new Image();
        imgPreloader.onload = (function(additionalParams) {
			this.lightboxImage.src = imgPreloader.src
            this.resizeImageContainer(imgPreloader.width, imgPreloader.height);
        }).bind(this);
		imgPreloader.src = this.imageArray[this.activeImage][0] + '&maxw=' + document.viewport.getWidth()  + '&maxh=' + document.viewport.getHeight() + '&hnsid=' + HNSID + '&' + MYSID;
    },

    //
    //  resizeImageContainer()
    //
    resizeImageContainer: function(imgWidth, imgHeight) {

        // get current width and height
        var widthCurrent  = this.outerImageContainer.getWidth();
        var heightCurrent = this.outerImageContainer.getHeight();

        // get new width and height
        var widthNew  = (imgWidth  + LightboxOptions.borderSize * 2);
        var heightNew = (imgHeight + LightboxOptions.borderSize * 2);

        // scalars based on change from old to new
        var xScale = (widthNew  / widthCurrent)  * 100;
        var yScale = (heightNew / heightCurrent) * 100;

        // calculate size difference between new and old image, and resize if necessary
        var wDiff = widthCurrent - widthNew;
        var hDiff = heightCurrent - heightNew;

        if (hDiff != 0) new Effect.Scale(this.outerImageContainer, yScale, {scaleX: false, duration: this.resizeDuration, queue: 'front'});
        if (wDiff != 0) new Effect.Scale(this.outerImageContainer, xScale, {scaleY: false, duration: this.resizeDuration, delay: this.resizeDuration});

        // if new and old image are same size and no scaling transition is necessary,
        // do a quick pause to prevent image flicker.
        var timeout = 0;
        if ((hDiff == 0) && (wDiff == 0)){
            timeout = 100;
            if (Prototype.Browser.IE) timeout = 250;
        }

        (function(){
            this.prevLink.setStyle({ height: imgHeight + 'px' });
            this.nextLink.setStyle({ height: imgHeight + 'px' });
            this.imageDataContainer.setStyle({ width: widthNew + 'px' });
            this.showImage();
        }).bind(this).delay(timeout / 1000);
    },

    //
    //  showImage()
    //  Display image and begin preloading neighbors.
    //
    showImage: function(){
        this.loading.hide();
        new Effect.Appear(this.lightboxImage, {
            duration: this.resizeDuration,
            queue: 'end',
            afterFinish: (function(){ this.updateDetails(); }).bind(this)
        });
        this.preloadNeighborImages();
    },

    //
    //  updateDetails()
    //  Display caption, image number, and bottom nav.
    //
    updateDetails: function() {

		this.caption.update(this.imageArray[this.activeImage][1] + '&nbsp;&nbsp;&nbsp; <div id="LEUCHTBOX_LINK"></div>');
		getUpdate('LEUCHTBOX_LINK','ask',this.imageArray[this.activeImage][0]);
		//this.caption.show();
        // if image is part of set display 'Image x of x'
        //if(this.imageArray.length > 1){
        //    this.numberDisplay.update( LightboxOptions.labelImage + ' ' + (this.activeImage + 1) + ' ' + LightboxOptions.labelOf + '  ' + this.imageArray.length).show();
        //}
		this.numberDisplay.update( LightboxOptions.labelImage + ' ' + (this.activeImage + 1) + ' ' + LightboxOptions.labelOf + '  ' + this.imageArray.length).show();
		this.caption.show();

		if($('imageDataContainer').getStyle('display')=='none')
		{
			new Effect.Parallel(
				[
					new Effect.SlideDown(this.imageDataContainer, { sync: true, duration: this.resizeDuration, from: 0.0, to: 1.0 }),
					new Effect.Appear(this.imageDataContainer, { sync: true, duration: this.resizeDuration })
				],
				{
					duration: this.resizeDuration,
					afterFinish: (function() {
						// update overlay size and update nav
						var arrayPageSize = this.getPageSize();
						this.overlay.setStyle({ height: arrayPageSize[1] + 'px' });
						this.updateNav();
					}).bind(this)
				}
			);
		}
		else
		{
			// update overlay size and update nav
			var arrayPageSize = this.getPageSize();
			this.overlay.setStyle({ height: arrayPageSize[1] + 'px' });
			this.updateNav();
		}
    },

    //
    //  updateNav()
    //  Display appropriate previous and next hover navigation.
    //
    updateNav: function() {

        this.hoverNav.show();

        // if not first image in set, display prev image button
        if (this.activeImage > 0) this.prevLink.show();

        // if not last image in set, display next image button
        if (this.activeImage < (this.imageArray.length - 1)) this.nextLink.show();

        this.enableKeyboardNav();
    },

    //
    //  enableKeyboardNav()
    //
    enableKeyboardNav: function() {
        document.observe('keydown', this.keyboardAction);
    },

    //
    //  disableKeyboardNav()
    //
    disableKeyboardNav: function() {
        document.stopObserving('keydown', this.keyboardAction);
    },

    //
    //  keyboardAction()
    //
    keyboardAction: function(event) {
        var keycode = event.keyCode;

        var escapeKey;
        if (event.DOM_VK_ESCAPE) {  // mozilla
            escapeKey = event.DOM_VK_ESCAPE;
        } else { // ie
            escapeKey = 27;
        }

        var key = String.fromCharCode(keycode).toLowerCase();

        if (key.match(/x|o|c/) || (keycode == escapeKey)){ // close lightbox
            this.end();
        } else if ((key == 'p') || (keycode == 37)){ // display previous image
            if (this.activeImage != 0){
                this.disableKeyboardNav();
                this.changeImage(this.activeImage - 1);
            }
        } else if ((key == 'n') || (keycode == 39)){ // display next image
            if (this.activeImage != (this.imageArray.length - 1)){
                this.disableKeyboardNav();
                this.changeImage(this.activeImage + 1);
            }
        }
    },

    //
    //  preloadNeighborImages()
    //  Preload previous and next images.
    //
    preloadNeighborImages: function() {
        var preloadNextImage, preloadPrevImage;
        if (this.imageArray.length > this.activeImage + 1)
		{
            preloadNextImage = new Image();
			preloadNextImage.src = this.imageArray[this.activeImage + 1][0] + '&maxw=' + document.viewport.getWidth()  + '&maxh=' + document.viewport.getHeight() + '&hnsid=' + HNSID + '&' + MYSID;
        }
        if (this.activeImage > 0)
		{
            preloadPrevImage = new Image();
			preloadPrevImage.src = this.imageArray[this.activeImage - 1][0] + '&maxw=' + document.viewport.getWidth()  + '&maxh=' + document.viewport.getHeight() + '&hnsid=' + HNSID + '&' + MYSID;
        }
    },

    //
    //  end()
    //
    end: function() {
        this.disableKeyboardNav();
        this.lightbox.hide();
        new Effect.Fade(this.overlay, { duration: this.overlayDuration });
        $$('select', 'object', 'embed').each(function(node){ node.style.visibility = 'visible' });
		getUpdate('leuchttisch','getcount','0');
    },

    //
    //  getPageSize()
    //
    getPageSize: function() {

	     var xScroll, yScroll;

		if (window.innerHeight && window.scrollMaxY) {
			xScroll = window.innerWidth + window.scrollMaxX;
			yScroll = window.innerHeight + window.scrollMaxY;
		} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
			xScroll = document.body.scrollWidth;
			yScroll = document.body.scrollHeight;
		} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
			xScroll = document.body.offsetWidth;
			yScroll = document.body.offsetHeight;
		}

		var windowWidth, windowHeight;

		if (self.innerHeight) {	// all except Explorer
			if(document.documentElement.clientWidth){
				windowWidth = document.documentElement.clientWidth;
			} else {
				windowWidth = self.innerWidth;
			}
			windowHeight = self.innerHeight;
		} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
			windowWidth = document.documentElement.clientWidth;
			windowHeight = document.documentElement.clientHeight;
		} else if (document.body) { // other Explorers
			windowWidth = document.body.clientWidth;
			windowHeight = document.body.clientHeight;
		}

		// for small pages with total height less then height of the viewport
		if(yScroll < windowHeight){
			pageHeight = windowHeight;
		} else {
			pageHeight = yScroll;
		}

		// for small pages with total width less then width of the viewport
		if(xScroll < windowWidth){
			pageWidth = xScroll;
		} else {
			pageWidth = windowWidth;
		}

		return [pageWidth,pageHeight];
	},




    //
    //  initialscaling()
    //
    initialscaling: function()
	{
		var arrayPageSize = this.getPageSize();
		$('overlay').setStyle({ width: arrayPageSize[0] + 'px', height: arrayPageSize[1] + 'px' });
		var W = document.viewport.getWidth();
		var H = document.viewport.getHeight();
		var url = '/2010.php';
		var pars = 'action=initialscaling' + '&maxw=' + W  + '&maxh=' + H + '&' + MYSID;
		var myAjax = new Ajax.Request(
			url,
			{
				method: 'get',
				parameters: pars,
				onSuccess: function(transport)
				{
					var bordersize = Math.ceil(LightboxOptions.borderSize) * 2;
					var ic_W = (transport.getHeader('xHn_icW')!=null) ? Math.ceil(transport.getHeader('xHn_icW')) + bordersize : 340 + bordersize;
					var ic_H = (transport.getHeader('xHn_icH')!=null) ? Math.ceil(transport.getHeader('xHn_icH')) + bordersize : 260 + bordersize;
					var text = (useLanguage=='en') ? ', (for you, actually up to ' + ic_W + 'x' + ic_H + ' pixel).' : ', (bei Ihnen zur Zeit auf ' + ic_W + 'x' + ic_H + ' pixel).';
					$('ImageSize').innerHTML = text;
					if($('lightbox').getStyle('display') != 'none' && (typeof(LB.lastIcw)!='undefined' && LB.lastIcw!=ic_W) && (typeof(LB.lastIch)!='undefined' && LB.lastIch!=ic_H))
					{
						$('imageDataContainer').hide();
						LB.changeImage(null);
					}
					else
					{
						$('imageDataContainer').setStyle({ width: ic_W + 'px' });
						$('outerImageContainer').setStyle({ width: ic_W + 'px' });
						$('outerImageContainer').setStyle({ height: ic_H + 'px' });
					}
					LB.lastIcw = ic_W;
					LB.lastIch = ic_H;
				}
			}
		);
    }

}



var LB;
function startLightbox()
{
	document.observe('dom:loaded', function()
	{
		LB = new Lightbox();
		Event.observe(document.onresize ? document : window, "resize", function()
		{
			LB.initialscaling();
		});
	});
}

// neue AJAX-Funktionen
function getUpdate(elem,action,imgid)
{
	var url = '/2010.php';
	var pars = 'action=' + action + '&id=' + imgid.replace(SearchPattern,'') + '&lang=' + useLanguage + '&' + MYSID;
	if(action=='ask') pars += '&maxw=' + document.viewport.getWidth()  + '&maxh=' + document.viewport.getHeight();
	var myAjax = new Ajax.Updater(
				{success: elem},
				url,
				{
					method: 'get',
					parameters: pars,
					onFailure: reportError
				});
	if(action=='add' || action=='remove')
	{
		getUpdate('leuchttisch','getcount','0');
	}
}
function setServer(action,value)
{
	var url = '/2010.php';
	var pars = 'action=' + action + '&value=' + value + '&' + MYSID;
	var elem = 'leuchttisch';
	var myAjax = new Ajax.Updater(
				{success: elem},
				url,
				{
					method: 'get',
					parameters: pars,
					onFailure: reportError
				});
}
function reportError(request)
{
	//alert("Sorry. There was an error.");
}
function makePDF()
{
	Sortable.destroy('LB_thumbs');
	Droppables.remove('muelleimer');
	$('muelleimer').hide();
	$('abraeumer').hide();
	$('pdf_p1').innerHTML = TEXT_3001;
	$('pdf_p2').hide();
	$('pdf_p3').hide();
	$('pdf_p4').innerHTML = TEXT_3005;
	$('pdf_p4').show();
	return true;
}
function reloadLightBox()
{
	self.location = '/lightbox/?' + MYSID;
}
function abraeumen(i)
{
	var timer = 777;
	var a = new Array();
	a = Sortable.sequence('LB_thumbs');
	if(a.length==0)
	{
		window.setTimeout('abraeumen_helper(\"ende\")',999);
		return;
	}
	window.setTimeout('abraeumen_helper(\"'+a[a.length - 1]+'\")',timer);
}
function abraeumen_helper(id)
{
	if(id=='ende')
	{
		self.location = '/lightbox/?K=LB&V=CLEAR&' + MYSID;
		return;
	}
	new Effect.Puff('id_' + id);
	$('id_' + id).removeClassName('sortable');
	abraeumen(0);
}
function starteLeuchttisch()
{
	Sortable.create('LB_thumbs',
	{
		tag: 'img',
		overlap: 'horizontal',
		constraint: false,
		only: 'sortable',
		ghosting: true,
		onUpdate: function()
		{
			setServer('leuchtbox_hirarchie',Sortable.sequence('LB_thumbs').join(','));
			if(Sortable.sequence('LB_thumbs').join('')=='')
			{
				getUpdate('leuchttisch','getcount','0');
				window.setTimeout('reloadLightBox()',1270);
			}
		}
	});
	Droppables.add('muelleimer',
	{
		hoverclass: 'hover',
		onDrop: function(element)
		{
			element.removeClassName('sortable');
			new Effect.DropOut(element.id);
			//element.remove();
		}
	});
}