Highlighted Source: lightbox-media.php

<?php
// -----------------------------------------------------------------------------------
//
//    Lightbox v2.02
//    by Lokesh Dhakar - http://www.huddletogether.com
//    3/31/06
//
//    For more information on this script, visit:
//    http://huddletogether.com/projects/lightbox2/
//
//    Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
//    
//    Credit also due to those who have helped, inspired, and made their code available to the public.
//    Including: Scott Upton(uptonic.com), Peter-Paul Koch(quirksmode.org), Thomas Fuchs(mir.aculo.us), and others.
//
//  Slightly modified to include all media inside an iframe by Thomas Egtvedt - http://blog.evaria.com
//  Go to lines 65 and 66 to set absolute URI to included images, and lines 74 and 75 to set iframe height and width.
//  The height and width also needs to be set equal in the included stylesheet (ID #lightboxIframe).
//
// -----------------------------------------------------------------------------------
/*

    Table of Contents
    -----------------
    Configuration
    Global Variables

    Extending Built-in Objects    
    - Object.extend(Element)
    - Array.prototype.removeDuplicates()
    - Array.prototype.empty()

    Lightbox Class Declaration
    - initialize()
    - start()
    - changeImage()
    - resizeImageContainer()
    - showImage()
    - updateDetails()
    - updateNav()
    - enableKeyboardNav()
    - disableKeyboardNav()
    - keyboardAction()
    - preloadNeighborImages()
    - end()
    
    Miscellaneous Functions
    - getPageScroll()
    - getPageSize()
    - getKey()
    - listenKey()
    - showSelectBoxes()
    - hideSelectBoxes()
    - pause()
    - initLightbox()
    
    Function Calls
    - addLoadEvent(initLightbox)
    
*/
// -----------------------------------------------------------------------------------

//
//    Configuration
//
var fileLoadingImage "images/loader.gif";        
var 
fileBottomNavCloseImage "images/blank.gif";

// edit by blogvaria 1
/*
  * These widths and heights are set as 'final' right now.
  * In order to change them, numbers would have to be 
  * parsed out of the rel attribute string.  
  */
var vidHeight 400;
var 
vidWidth 600;
// end edit by blogvaria

var resizeSpeed 7;    // controls the speed of the image resizing (1=slowest and 10=fastest)

var borderSize 10;    //if you adjust the padding in the CSS, you will need to update this variable

// -----------------------------------------------------------------------------------
    
//
//    Global Variables
//
var imageArray = new Array;
var 
activeImage;

if(
resizeSpeed 10){ resizeSpeed 10;}
if(
resizeSpeed 1){ resizeSpeed 1;}
resizeDuration = (11 resizeSpeed) * 0.15;

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

//
//    Additional methods for Element added by SU, Couloir
//    - further additions by Lokesh Dhakar (huddletogether.com)
//
Object.extend(Element, {
    
getWidth: function(element) {
           
element = $(element);
           return 
element.offsetWidth
    },
    
setWidth: function(element,w) {
           
element = $(element);
        
element.style.width +"px";
    },
    
setHeight: function(element,h) {
           
element = $(element);
        
element.style.height +"px";
    },
    
setTop: function(element,t) {
           
element = $(element);
        
element.style.top +"px";
    },
    
setSrc: function(element,src) {
        
element = $(element);
        
element.src src
    },
    
setHref: function(element,href) {
        
element = $(element);
        
element.href href
    },
    
setInnerHTML: function(element,content) {
        
element = $(element);
        
element.innerHTML content;
    }
});

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

//
//    Extending built-in Array object
//    - array.removeDuplicates()
//    - array.empty()
//
Array.prototype.removeDuplicates = function () {
    for(
1this.lengthi++){
        if(
this[i][0] == this[i-1][0]){
            
this.splice(i,1);
        }
    }
}

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

Array.prototype.empty = function () {
    for(
0<= this.lengthi++){
        
this.shift();
    }
}

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

//
//    Lightbox Class Declaration
//    - initialize()
//    - start()
//    - changeImage()
//    - resizeImageContainer()
//    - showImage()
//    - updateDetails()
//    - updateNav()
//    - enableKeyboardNav()
//    - disableKeyboardNav()
//    - keyboardNavAction()
//    - preloadNeighborImages()
//    - end()
//
//    Structuring of code inspired by Scott Upton (http://www.uptonic.com/)
//
var Lightbox = Class.create();

Lightbox.prototype = {
    
    
// initialize()
    // Constructor runs on completion of the DOM loading. Loops through anchor tags looking for 
    // 'lightbox' references and applies onclick events to appropriate links. The 2nd section of
    // the function inserts html at the bottom of the page which is used to display the shadow 
    // overlay and the image container.
    //
    
initialize: function() {    
        if (!
document.getElementsByTagName){ return; }
        var 
anchors document.getElementsByTagName('a');

        
// loop through all anchor tags
        
for (var i=0i<anchors.lengthi++){
            var 
anchor anchors[i];
            
            var 
relAttribute String(anchor.getAttribute('rel'));
            
            
// use the string.match() method to catch 'lightbox' references in the rel attribute
            
if (anchor.getAttribute('href') && (relAttribute.toLowerCase().match('lightbox'))){
                
anchor.onclick = function () {myLightbox.start(this); return false;}
            }
        }

        
// The rest of this 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 document.getElementsByTagName("body").item(0);
        
        var 
objOverlay document.createElement("div");
        
objOverlay.setAttribute('id','overlay');
        
objOverlay.style.display 'none';
        
objOverlay.onclick = function() { myLightbox.end(); return false; }
        
objBody.appendChild(objOverlay);
        
        var 
objLightbox document.createElement("div");
        
objLightbox.setAttribute('id','lightbox');
        
objLightbox.style.display 'none';
        
objBody.appendChild(objLightbox);
    
        var 
objOuterImageContainer document.createElement("div");
        
objOuterImageContainer.setAttribute('id','outerImageContainer');
        
objLightbox.appendChild(objOuterImageContainer);

        var 
objImageContainer document.createElement("div");
        
objImageContainer.setAttribute('id','imageContainer');
        
objOuterImageContainer.appendChild(objImageContainer);

        var 
objHoverNav document.createElement("div");
        
objHoverNav.setAttribute('id','hoverNav');
        
objImageContainer.appendChild(objHoverNav);
    
        var 
objPrevLink document.createElement("a");
        
objPrevLink.setAttribute('id','prevLink');
        
objPrevLink.setAttribute('href','#');
        
objHoverNav.appendChild(objPrevLink);

        var 
objNextLink document.createElement("a");
        
objNextLink.setAttribute('id','nextLink');
        
objNextLink.setAttribute('href','#');
        
objHoverNav.appendChild(objNextLink);

        var 
objNumberDisplay document.createElement("span");
        
objNumberDisplay.setAttribute('id','numberDisplay');
        
objHoverNav.appendChild(objNumberDisplay);


        
// edit by blogvaria 2
        
var objLightboxIframe document.createElement("iframe");
        
objLightboxIframe.setAttribute('id','lightboxIframe');
        
objLightboxIframe.setAttribute('src','href');
        
objLightboxIframe.setAttribute('scrolling','auto');
        
objLightboxIframe.setAttribute('frameborder','0');
        
/*objLightboxIframe.setAttribute('style','z-index:20000');
        objLightboxIframe.style.width = vidWidth + 'px';
        objLightboxIframe.style.height = vidHeight + 'px';
        objLightboxIframe.style.border = 'none';*/
        
objImageContainer.appendChild(objLightboxIframe);
        
// end edit by blogvaria

        
var objLightboxImage document.createElement("img");
        
objLightboxImage.setAttribute('id','lightboxImage');
        
objImageContainer.appendChild(objLightboxImage);
    
        var 
objLoading document.createElement("div");
        
objLoading.setAttribute('id','loading');
        
objImageContainer.appendChild(objLoading);
    
        var 
objLoadingLink document.createElement("a");
        
objLoadingLink.setAttribute('id','loadingLink');
        
objLoadingLink.setAttribute('href','#');
        
objLoadingLink.onclick = function() { myLightbox.end(); return false; }
        
objLoading.appendChild(objLoadingLink);
    
        var 
objLoadingImage document.createElement("img");
        
objLoadingImage.setAttribute('src'fileLoadingImage);
        
objLoadingLink.appendChild(objLoadingImage);

        var 
objImageDataContainer document.createElement("div");
        
objImageDataContainer.setAttribute('id','imageDataContainer');
        
objImageDataContainer.className 'clearfix';
        
objLightbox.appendChild(objImageDataContainer);

        var 
objImageData document.createElement("div");
        
objImageData.setAttribute('id','imageData');
        
objImageDataContainer.appendChild(objImageData);
    
        var 
objImageDetails document.createElement("div");
        
objImageDetails.setAttribute('id','imageDetails');
        
objImageData.appendChild(objImageDetails);
    
        var 
objCaption document.createElement("span");
        
objCaption.setAttribute('id','caption');
        
objImageDetails.appendChild(objCaption);
        
        var 
objBottomNav document.createElement("div");
        
objBottomNav.setAttribute('id','bottomNav');
        
objImageData.appendChild(objBottomNav);
    
        var 
objBottomNavCloseLink document.createElement("a");
        
objBottomNavCloseLink.setAttribute('id','bottomNavClose');
        
objBottomNavCloseLink.setAttribute('href','#');
        
objBottomNavCloseLink.onclick = function() { myLightbox.end(); return false; }
        
objBottomNav.appendChild(objBottomNavCloseLink);
    
        var 
objBottomNavCloseImage document.createElement("img");
        
objBottomNavCloseImage.setAttribute('src'fileBottomNavCloseImage);
        
objBottomNavCloseLink.appendChild(objBottomNavCloseImage);
    },
    
    
//
    //    start()
    //    Display overlay and lightbox. If image is part of a set, add siblings to imageArray.
    //
    
start: function(imageLink) {    

        
hideSelectBoxes();
        
hideObjectAndParam();
        
// hideIframe();

        // stretch overlay to fill page and fade in
        
var arrayPageSize getPageSize();
        
Element.setHeight('overlay'arrayPageSize[1]);
        new 
Effect.Appear('overlay', { duration0.2from0.0to0.8 });

        
imageArray = [];
        
imageNum 0;        

        if (!
document.getElementsByTagName){ return; }
        var 
anchors document.getElementsByTagName('a');

        
// if image is NOT part of a set..
        
if((imageLink.getAttribute('rel') == 'lightbox')){
            
// add single image to imageArray
            
imageArray.push(new Array(imageLink.getAttribute('href'), imageLink.getAttribute('title')));            
        } else {
        
// if image is part of a set..

            // loop through anchors, find other images in set, and add them to imageArray
            
for (var i=0i<anchors.lengthi++){
                var 
anchor anchors[i];
                if (
anchor.getAttribute('href') && (anchor.getAttribute('rel') == imageLink.getAttribute('rel'))){
                    
imageArray.push(new Array(anchor.getAttribute('href'), anchor.getAttribute('title')));
                }
            }
            
imageArray.removeDuplicates();
            while(
imageArray[imageNum][0] != imageLink.getAttribute('href')) { imageNum++;}
        }

        
// calculate top offset for the lightbox and display 
        
var arrayPageSize getPageSize();
        var 
arrayPageScroll getPageScroll();
        var 
lightboxTop arrayPageScroll[1] + (arrayPageSize[3] / 15);

        
Element.setTop('lightbox'lightboxTop);
        
Element.show('lightbox');
        
        
this.changeImage(imageNum);
    },

    
//
    //    changeImage()
    //    Hide most elements and preload image in preparation for resizing image container.
    //
    
changeImage: function(imageNum) {    
        
        
activeImage imageNum;    // update global var

        // hide elements during transition
        
Element.show('loading');
        
Element.hide('lightboxImage');
        
// edit by blogvaria 2.5
        
Element.hide('lightboxIframe');
        
// end edit by blogvaria
        
Element.hide('hoverNav');
        
Element.hide('prevLink');
        
Element.hide('nextLink');
        
Element.hide('imageDataContainer');
        
Element.hide('numberDisplay');        

        
// edit by blogvaria 3    
        // if(imageArray[activeImage][0].match(/\.gif$/|/\.jpg$/|/\.png$/)){
        
if(imageArray[activeImage][0].match(/ Warning: Unexpected character in input: '\' (ASCII=92) state=1 in highlight.php on line 1 .gif$/) || imageArray[activeImage][0].match(/ Warning: Unexpected character in input: '\' (ASCII=92) state=1 in highlight.php on line 1 .png$/) || imageArray[activeImage][0].match(/ Warning: Unexpected character in input: '\' (ASCII=92) state=1 in highlight.php on line 1 .jpg$/)){
            
this.content_is_image true;
            
            
imgPreloader = new Image();
        
            
// once image is preloaded, resize image container
            
imgPreloader.onload=function(){            
                
Element.setSrc('lightboxImage'imageArray[activeImage][0]);
                
myLightbox.resizeImageContainer(imgPreloader.widthimgPreloader.height);
            }
            
imgPreloader.src imageArray[activeImage][0];
        } else{                
            
this.content_is_image false;
            
            
Element.setSrc('lightboxIframe'imageArray[activeImage][0]);
            
myLightbox.resizeImageContainer(vidWidthvidHeight);
        }
        
// end edit by blogvaria
    
},

    
//
    //    resizeImageContainer()
    //
    
resizeImageContainer: function( imgWidthimgHeight) {
        
        
// edit by blogvaria 4
        
$('lightboxIframe').style.height vidHeight 'px';
        
// end edit by blogvaria

        // get current height and width
        
this.wCur Element.getWidth('outerImageContainer');
        
this.hCur Element.getHeight('outerImageContainer');

        
// scalars based on change from old to new
        
this.xScale = ((imgWidth  + (borderSize 2)) / this.wCur) * 100;
        
this.yScale = ((imgHeight  + (borderSize 2)) / this.hCur) * 100;

        
// calculate size difference between new and old image, and resize if necessary
        
wDiff = (this.wCur borderSize 2) - imgWidth;
        
hDiff = (this.hCur borderSize 2) - imgHeight;

        if(!( 
hDiff == 0)){ new Effect.Scale('outerImageContainer'this.yScale, {scaleXfalsedurationresizeDurationqueue'front'}); }
        if(!( 
wDiff == 0)){ new Effect.Scale('outerImageContainer'this.xScale, {scaleYfalsedelayresizeDurationdurationresizeDuration}); }

        
// if new and old image are same size and no scaling transition is necessary, 
        // do a quick pause to prevent image flicker.
        
if((hDiff == 0) && (wDiff == 0)){
            if (
navigator.appVersion.indexOf("MSIE")!=-1){ pause(250); } else { pause(100);} 
        }

        
Element.setHeight('prevLink'imgHeight);
        
Element.setHeight('nextLink'imgHeight);
        
Element.setWidth'imageDataContainer'imgWidth + (borderSize 2));

        
this.showImage();
    },
    
    
//
    //    showImage()
    //    Display image and begin preloading neighbors.
    //
    
showImage: function(){
        
Element.hide('loading');
        
        
// edit by blogvaria 5
        
new Effect.Appear(this.content_is_image 'lightboxImage' 'lightboxIframe', { duration0.5queue'end'afterFinish: function(){    myLightbox.updateDetails(); } });
        
// end edit by blogvaria

        
this.preloadNeighborImages();
    },

    
//
    //    updateDetails()
    //    Display caption, image number, and bottom nav.
    //
    
updateDetails: function() {
    
        
Element.show('caption');
        
Element.setInnerHTML'caption'imageArray[activeImage][1]);
        
        
// if image is part of set display 'Image x of x' 
        
if(imageArray.length 1){
            
Element.show('numberDisplay');
            
Element.setInnerHTML'numberDisplay'"Displaying no. " + eval(activeImage 1) + " of " imageArray.length);
        }

        new 
Effect.Parallel(
            [ new 
Effect.SlideDown'imageDataContainer', { synctruedurationresizeDuration 0.25from0.0to1.0 }), 
              new 
Effect.Appear('imageDataContainer', { synctrueduration1.0 }) ], 
            { 
duration0.65afterFinish: function() { myLightbox.updateNav();} } 
        );
    },

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

        
Element.show('hoverNav');                

        
// if not first image in set, display prev image button
        
if(activeImage != 0){
            
Element.show('prevLink');
            
document.getElementById('prevLink').onclick = function() {
                
myLightbox.changeImage(activeImage 1); return false;
            }
        }

        
// if not last image in set, display next image button
        
if(activeImage != (imageArray.length 1)){
            
Element.show('nextLink');
            
document.getElementById('nextLink').onclick = function() {
                
myLightbox.changeImage(activeImage 1); return false;
            }
        }
        
        
this.enableKeyboardNav();
    },

    
//
    //    enableKeyboardNav()
    //
    
enableKeyboardNav: function() {
        
document.onkeydown this.keyboardAction
    },

    
//
    //    disableKeyboardNav()
    //
    
disableKeyboardNav: function() {
        
document.onkeydown '';
    },

    
//
    //    keyboardAction()
    //
    
keyboardAction: function(e) {
        if (
== null) { // ie
            
keycode event.keyCode;
        } else { 
// mozilla
            
keycode e.which;
        }

        
key String.fromCharCode(keycode).toLowerCase();
        
        if((
key == 'x') || (key == 'o') || (key == 'c')){    // close lightbox
            
myLightbox.end();
        } else if(
key == 'p'){    // display previous image
            
if(activeImage != 0){
                
myLightbox.disableKeyboardNav();
                
myLightbox.changeImage(activeImage 1);
            }
        } else if(
key == 'n'){    // display next image
            
if(activeImage != (imageArray.length 1)){
                
myLightbox.disableKeyboardNav();
                
myLightbox.changeImage(activeImage 1);
            }
        }


    },

    
//
    //    preloadNeighborImages()
    //    Preload previous and next images.
    //
    
preloadNeighborImages: function(){

        if((
imageArray.length 1) > activeImage){
            
preloadNextImage = new Image();
            
preloadNextImage.src imageArray[activeImage 1][0];
        }
        if(
activeImage 0){
            
preloadPrevImage = new Image();
            
preloadPrevImage.src imageArray[activeImage 1][0];
        }
    
    },

    
//
    //    end()
    //
    
end: function() {
        
this.disableKeyboardNav();
        
Element.hide('lightbox');
        new 
Effect.Fade('overlay', { duration0.2});
        
showSelectBoxes();
        
showObjectAndParam();
        
//showIframe();
        
        // edit by blogvaria 6
        
Element.setSrc('lightboxIframe''');
        
// end edit by blogvaria
    
}
}

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

//
// getPageScroll()
// Returns array with x,y page scroll values.
// Core code from - quirksmode.org
//
function getPageScroll(){

    var 
yScroll;

    if (
self.pageYOffset) {
        
yScroll self.pageYOffset;
    } else if (
document.documentElement && document.documentElement.scrollTop){     // Explorer 6 Strict
        
yScroll document.documentElement.scrollTop;
    } else if (
document.body) {// all other Explorers
        
yScroll document.body.scrollTop;
    }

    
arrayPageScroll = new Array('',yScroll
    return 
arrayPageScroll;
}

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

//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.org
// Edit for Firefox by pHaez
//
function getPageSize(){
    
    var 
xScrollyScroll;
    
    if (
window.innerHeight && window.scrollMaxY) {    
        
xScroll document.body.scrollWidth;
        
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 
windowWidthwindowHeight;
    if (
self.innerHeight) {    // all except Explorer
        
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 windowWidth;
    } else {
        
pageWidth xScroll;
    }


    
arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight
    return 
arrayPageSize;
}

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

//
// getKey(key)
// Gets keycode. If 'x' is pressed then it hides the lightbox.
//
function getKey(e){
    if (
== null) { // ie
        
keycode event.keyCode;
    } else { 
// mozilla
        
keycode e.which;
    }
    
key String.fromCharCode(keycode).toLowerCase();
    
    if(
key == 'x'){
    }
}

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

//
// listenKey()
//
function listenKey () {    document.onkeypress getKey; }
    
// ---------------------------------------------------

function showSelectBoxes(){
    
selects document.getElementsByTagName("select");
    for (
0!= selects.lengthi++) {
        
selects[i].style.visibility "visible";
    }
}
function 
showObjectAndParam(){
    
objects document.getElementsByTagName("object");
    for (
0!= objects.lengthi++) {
        
objects[i].style.visibility "visible";
    }
}
function 
showIframe(){
    
iframes document.getElementsByTagName("iframe");
    for (
0!= iframes.lengthi++) {
        
iframes[i].style.visibility "visible";
    }
}

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

function hideSelectBoxes(){
    
selects document.getElementsByTagName("select");
    for (
0!= selects.lengthi++) {
        
selects[i].style.visibility "hidden";
    }
}
function 
hideObjectAndParam(){
    
objects document.getElementsByTagName("object");
    for (
0!= objects.lengthi++) {
        
objects[i].style.visibility "hidden";
    }
}
function 
hideIframe(){
    
iframes document.getElementsByTagName("iframe");
    for (
0!= iframes.lengthi++) {
        
iframes[i].style.visibility "hidden";
    }
}

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

//
// pause(numberMillis)
// Pauses code execution for specified time. Uses busy code, not good.
// Code from http://www.faqts.com/knowledge_base/view.phtml/aid/1602
//
function pause(numberMillis) {
    var 
now = new Date();
    var 
exitTime now.getTime() + numberMillis;
    while (
true) {
        
now = new Date();
        if (
now.getTime() > exitTime)
            return;
    }
}

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



function initLightbox() { myLightbox = new Lightbox(); }
Event.observe(window'load'initLightboxfalse);
?>

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