/usr/share/horde/ansel/js/lightbox.js is in php-horde-ansel 3.0.5+debian0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// the lightbox images to span multiple gallery pages...and thus is no longer
// really "Lightbox", but a good bit of the original code is still intact.
// The original credits/copyright appears below.
// -----------------------------------------------------------------------------------
//
// 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.
//
// -----------------------------------------------------------------------------------
/*
Table of Contents
-----------------
Configuration
Lightbox Class Declaration
- initialize()
- updateImageList()
- start()
- changeImage()
- resizeImageContainer()
- showImage()
- updateDetails()
- updateNav()
- enableKeyboardNav()
- disableKeyboardNav()
- keyboardAction()
- preloadNeighborImages()
- end()
Function Calls
- document.observe()
*/
// -----------------------------------------------------------------------------------
var Lightbox = Class.create();
Lightbox.prototype = {
imageArray: [],
activeImage: undefined,
options: 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.
//
// Modified 3/25/2008 Michael J. Rubinsky <mrubinsk@horde.org> to remove
// dependency on scriptaculous' Builder object since the new Element
// constructor in Prototype does this more efficently.
initialize: function(options) {
this.options = options;
this.imageArray = this.options.gallery_json;
this.keyboardAction = this.keyboardAction.bindAsEventListener(this);
if (this.options.resizeSpeed > 10) this.options.resizeSpeed = 10;
if (this.options.resizeSpeed < 1) this.options.resizeSpeed = 1;
this.resizeDuration = this.options.animate ? ((11 - this.options.resizeSpeed) * 0.15) : 0;
this.overlayDuration = this.options.animate ? 0.2 : 0; // shadow fade in/out duration
// When Lightbox starts it will resize itself from 250 by 250 to the current image dimension.
// If animations are turned off, it will be hidden as to prevent a flicker of a
// white 250 by 250 box.
var size = (this.options.animate ? 250 : 1) + 'px';
// Code inserts html at the bottom of the page that looks similar to this:
//
// <div id="overlay"></div>
// <div id="lightbox">
// <div id="outerImageContainer">
// <div id="imageContainer">
// <img id="lightboxImage">
// <div style="" id="hoverNav">
// <a href="#" id="prevLink"></a>
// <a href="#" id="nextLink"></a>
// </div>
// <div id="loading">
// <a href="#" id="loadingLink">
// <img src="images/loading.gif">
// </a>
// </div>
// </div>
// </div>
// <div id="imageDataContainer">
// <div id="imageData">
// <div id="imageDetails">
// <span id="caption"></span>
// <span id="numberDisplay"></span>
// </div>
// <div id="bottomNav">
// <a href="#" id="bottomNavClose">
// <img src="images/close.gif">
// </a>
// </div>
// </div>
// </div>
// </div>
var objBody = $$('body')[0];
objBody.appendChild(new Element('div', {id: 'overlay'}));
// Build innermost children
var hoverNav = new Element('div', {id: 'hoverNav'});
hoverNav.appendChild(new Element('a', {id:'prevLink', href: '#'}));
hoverNav.appendChild(new Element('a', {id: 'nextLink', href: '#'}));
var loadingLink = new Element('a', {id: 'loadingLink', href: '#'});
loadingLink.appendChild(new Element('img', {src: this.options.fileLoadingImage}));
var loading = new Element('div', {id: 'loading'});
loading.appendChild(loadingLink);
var container = new Element('div', {id: 'imageContainer'});
container.appendChild(new Element('img', {id: 'lightboxImage'}));
container.appendChild(hoverNav);
container.appendChild(loading);
var outerContainer = new Element('div', {id: 'outerImageContainer'});
outerContainer.appendChild(container);
var imageDetails = new Element('div', {id: 'imageDetails'});
imageDetails.appendChild(new Element('span', {id: 'caption'}));
imageDetails.appendChild(new Element('span', {id: 'numberDisplay'}));
var bottomClose = new Element('a', {id: 'bottomNavClose', href: '#'});
bottomClose.appendChild(new Element('img', {src: this.options.fileBottomNavCloseImage}));
var bottomNav = new Element('div', {id: 'bottomNav'});
bottomNav.appendChild(bottomClose);
var imageData = new Element('div', {id: 'imageData'});
imageData.appendChild(imageDetails);
imageData.appendChild(bottomNav);
var imageDataContainer = new Element('div', {id: 'imageDataContainer'});
imageDataContainer.appendChild(imageData);
// The outermost node
var lightbox = new Element('div', {id: 'lightbox'});
lightbox.appendChild(outerContainer);
lightbox.appendChild(imageDataContainer);
objBody.appendChild(lightbox);
$('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 });
// Need to cache the event listener function so we can call stopObserving() later
this.prevEventListener = (function(event) { event.stop(); this.changeImage(this.activeImage - 1); }).bindAsEventListener(this);
$('prevLink').observe('click', this.prevEventListener);
this.nextEventListener = (function(event) { event.stop(); this.changeImage(this.activeImage + 1); }).bindAsEventListener(this);
$('nextLink').observe('click', this.nextEventListener);
$('loadingLink').observe('click', (function(event) { event.stop(); this.end(); }).bind(this));
$('bottomNavClose').observe('click', (function(event) { event.stop(); this.end(); }).bind(this));
},
//
// start()
// Display overlay and lightbox.
//
start: function(imageId) {
$$('select', 'object', 'embed').invoke('setStyle', 'visibility:hidden');
// stretch overlay to fill page and fade in
var arrayPageSize = this.getPageSize();
$('overlay').setStyle({ height: arrayPageSize[1] + 'px' });
new Effect.Appear($('overlay'), { duration: this.overlayDuration, from: 0.0, to: this.options.overlayOpacity });
// calculate top and left offset for the lightbox
var arrayPageScroll = document.viewport.getScrollOffsets();
var lightboxTop = arrayPageScroll[1] + (document.viewport.getHeight() / 15);
var lightboxLeft = arrayPageScroll[0];
$('lightbox').setStyle({ top: lightboxTop + 'px', left: lightboxLeft + 'px' }).show();
// Need to find the index for this image.
var imageNum = 0;
while (this.imageArray[imageNum][3] != imageId || imageNum > this.imageArray.length - 1) {
imageNum++;
}
this.changeImage(imageNum);
return false;
},
//
// changeImage()
// Hide most elements and preload image in preparation for resizing image container.
//
changeImage: function(imageNum) {
this.activeImage = imageNum; // update global var
// hide elements during transition
if (this.options.animate) $('loading').show();
$('lightboxImage', 'hoverNav', 'prevLink', 'nextLink', 'numberDisplay').invoke('hide');
// HACK: Opera9 does not currently support scriptaculous opacity and appear fx
$('imageDataContainer').setStyle({opacity: .0001});
var imgPreloader = new Image();
// once image is preloaded, resize image container
imgPreloader.onload = (function(){
$('lightboxImage').src = this.imageArray[this.activeImage][0];
this.resizeImageContainer(imgPreloader.width, imgPreloader.height);
}).bind(this);
imgPreloader.src = this.imageArray[this.activeImage][0];
},
//
// resizeImageContainer()
//
resizeImageContainer: function(imgWidth, imgHeight) {
// get current width and height
var widthCurrent = $('outerImageContainer').getWidth();
var heightCurrent = $('outerImageContainer').getHeight();
// get new width and height
var widthNew = (imgWidth + this.options.borderSize * 2);
var heightNew = (imgHeight + this.options.borderSize * 2);
// scalars based on change from old to new
var xScale = (widthNew / widthCurrent) * 100;
var yScale = (heightNew / heightCurrent) * 100;
// calculate size difference between new and old image, and resize if necessary
var wDiff = widthCurrent - widthNew;
var hDiff = heightCurrent - heightNew;
if (hDiff != 0) new Effect.Scale($('outerImageContainer'), yScale, {scaleX: false, duration: this.resizeDuration, queue: 'front'});
if (wDiff != 0) new Effect.Scale($('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(){
$('prevLink', 'nextLink').invoke('setStyle', 'height:' + imgHeight + 'px');
$('imageDataContainer').setStyle({ width: widthNew + 'px' });
this.showImage();
}).bind(this).delay(timeout / 1000);
},
//
// showImage()
// Display image and begin preloading neighbors.
//
showImage: function(){
$('loading').hide();
new Effect.Appear($('lightboxImage'), {
duration: this.resizeDuration,
queue: 'end',
afterFinish: (function(){ this.updateDetails(); }).bind(this)
});
this.preloadNeighborImages();
},
//
// updateDetails()
// Display caption, image number, and bottom nav.
//
updateDetails: function() {
// use caption, or fall back to the file name if it's empty.
if (this.imageArray[this.activeImage][2] != ""){
$('caption').update(this.imageArray[this.activeImage][2]).show();
} else {
$('caption').update(this.imageArray[this.activeImage][1]).show();
}
// if image is part of set display 'Image x of x'
if (this.imageArray.length > 1){
$('numberDisplay').update( this.options.labelImage + ' ' + (this.activeImage + 1) + ' ' + this.options.labelOf + ' ' + this.imageArray.length).show();
}
new Effect.Parallel(
[
new Effect.SlideDown($('imageDataContainer'), { sync: true, duration: this.resizeDuration, from: 0.0, to: 1.0 }),
new Effect.Appear($('imageDataContainer'), { sync: true, duration: this.resizeDuration })
],
{
duration: this.resizeDuration,
afterFinish: (function() {
// update overlay size and update nav
var arrayPageSize = this.getPageSize();
$('overlay').setStyle({ height: arrayPageSize[1] + 'px' });
this.updateNav();
}).bind(this)
}
);
},
//
// updateNav()
// Display appropriate previous and next hover navigation.
//
updateNav: function() {
$('hoverNav').show();
// if not first image in set, display prev image button
if (this.activeImage > 0) $('prevLink').show();
// if not last image in set, display next image button
if (this.activeImage < (this.imageArray.length - 1)) $('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];
}
if (this.activeImage > 0){
preloadPrevImage = new Image();
preloadPrevImage.src = this.imageArray[this.activeImage - 1][0];
}
},
//
// end()
//
end: function() {
this.disableKeyboardNav();
$('lightbox').hide();
new Effect.Fade($('overlay'), { duration: this.overlayDuration });
$$('select', 'object', 'embed').invoke('setStyle', 'visibility:visible');
//redirect here//
if (this.options.startPage != this.imageArray[this.activeImage][4]) {
location.href = this.options.returnURL + "page=" + this.imageArray[this.activeImage][4];
}
},
//
// 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];
}
}
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