User:Hartz/monobook.js
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/* Trying to get Lightbox (http://huddletogether.com/projects/lightbox/) working in MediaWiki. */ var loadingImage = 'http://www.huddletogether.com/projects/lightbox2/images/loading.gif'; var closeButton = 'http://www.huddletogether.com/projects/lightbox2/images/close.gif'; 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; } function getPageSize() { var xScroll, yScroll; 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 windowWidth, windowHeight; 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; } function pause(numberMillis) { var now = new Date(); var exitTime = now.getTime() + numberMillis; while (true) { now = new Date(); if (now.getTime() > exitTime) return; } } function showLightbox(objLink) { // prep objects var objOverlay = document.getElementById('overlay'); var objLightbox = document.getElementById('lightbox'); var objCaption = document.getElementById('lightboxCaption'); var objImage = document.getElementById('lightboxImage'); var objLoadingImage = document.getElementById('loadingImage'); var objLightboxDetails = document.getElementById('lightboxDetails'); var arrayPageSize = getPageSize(); var arrayPageScroll = getPageScroll(); // center loadingImage if it exists if (objLoadingImage) { objLoadingImage.style.top = (arrayPageScroll[1] + ((arrayPageSize[3] - 35 - objLoadingImage.height) / 2) + 'px'); objLoadingImage.style.left = (((arrayPageSize[0] - 20 - objLoadingImage.width) / 2) + 'px'); objLoadingImage.style.display = 'block'; } // set height of Overlay to take up whole page and show objOverlay.style.height = (arrayPageSize[1] + 'px'); objOverlay.style.display = 'block'; // preload image imgPreload = new Image(); imgPreload.onload=function() { objImage.src = objLink.href; // center lightbox and make sure that the top and left values are not negative // and the image placed outside the viewport var lightboxTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - imgPreload.height) / 2); var lightboxLeft = ((arrayPageSize[0] - 20 - imgPreload.width) / 2); objLightbox.style.top = (lightboxTop < 0) ? "0px" : lightboxTop + "px"; objLightbox.style.left = (lightboxLeft < 0) ? "0px" : lightboxLeft + "px"; objLightboxDetails.style.width = imgPreload.width + 'px'; if (objLink.getAttribute('title')) { objCaption.style.display = 'block'; //objCaption.style.width = imgPreload.width + 'px'; objCaption.innerHTML = objLink.getAttribute('title'); } else { objCaption.style.display = 'none'; } // A small pause between the image loading and displaying is required with IE, // this prevents the previous image displaying for a short burst causing flicker. if (navigator.appVersion.indexOf("MSIE")!=-1){ pause(250); } // Hide loadingImage if (objLoadingImage) { objLoadingImage.style.display = 'none'; } // Hide select boxes as they will 'peek' through the image in IE selects = document.getElementsByTagName("select"); for (i = 0; i != selects.length; i++) { selects[i].style.visibility = "hidden"; } objLightbox.style.display = 'block'; // After image is loaded, update the overlay height as the new image might have // increased the overall page height. arrayPageSize = getPageSize(); objOverlay.style.height = (arrayPageSize[1] + 'px'); return false; } imgPreload.src = objLink.href; } function hideLightbox() { // get objects objOverlay = document.getElementById('overlay'); objLightbox = document.getElementById('lightbox'); // hide lightbox and overlay objOverlay.style.display = 'none'; objLightbox.style.display = 'none'; // make select boxes visible selects = document.getElementsByTagName("select"); for (i = 0; i != selects.length; i++) { selects[i].style.visibility = "visible"; } } function initLightbox() { var content = document.getElementById('content'); if (content) { var anchors = document.getElementsByTagName('a'); for (var i = 0; i < anchors.length; i++) { var anchor = anchors[i]; if (anchor.getAttribute('href') && (anchor.getAttribute('class') == 'image') || (anchor.getAttribute('class') == 'internal')) { anchor.onclick = function() { showLightbox(this); // '/wiki/Image:Thumb.png' alert(this); return false; } } } var objBody = document.getElementsByTagName("body").item(0); // create overlay div and hardcode some functional styles (aesthetic styles are in CSS file) var objOverlay = document.createElement("div"); objOverlay.setAttribute('id','overlay'); objOverlay.onclick = function() { hideLightbox(); return false; } objOverlay.style.display = 'none'; objOverlay.style.position = 'absolute'; objOverlay.style.top = '0'; objOverlay.style.left = '0'; objOverlay.style.zIndex = '90'; objOverlay.style.width = '100%'; objBody.insertBefore(objOverlay, objBody.firstChild); var arrayPageSize = getPageSize(); var arrayPageScroll = getPageScroll(); // preload and create loader image var imgPreloader = new Image(); // if loader image found, create link to hide lightbox and create loadingimage imgPreloader.onload=function() { var objLoadingImageLink = document.createElement("a"); objLoadingImageLink.setAttribute('href','#'); objLoadingImageLink.onclick = function() { hideLightbox(); return false; } objOverlay.appendChild(objLoadingImageLink); var objLoadingImage = document.createElement("img"); objLoadingImage.src = loadingImage; objLoadingImage.setAttribute('id','loadingImage'); objLoadingImage.style.position = 'absolute'; objLoadingImage.style.zIndex = '150'; objLoadingImageLink.appendChild(objLoadingImage); imgPreloader.onload=function(){}; // clear onLoad, as IE will flip out w/animated gifs return false; } imgPreloader.src = loadingImage; // create lightbox div, same note about styles as above var objLightbox = document.createElement("div"); objLightbox.setAttribute('id','lightbox'); objLightbox.style.display = 'none'; objLightbox.style.position = 'absolute'; objLightbox.style.zIndex = '100'; objBody.insertBefore(objLightbox, objOverlay.nextSibling); // create link var objLink = document.createElement("a"); objLink.setAttribute('href','#'); objLink.setAttribute('title','Click to close'); objLink.onclick = function () { hideLightbox(); return false; } objLightbox.appendChild(objLink); // preload and create close button image var imgPreloadCloseButton = new Image(); // if close button image found, imgPreloadCloseButton.onload=function() { var objCloseButton = document.createElement("img"); objCloseButton.src = closeButton; objCloseButton.setAttribute('id','closeButton'); objCloseButton.style.position = 'absolute'; objCloseButton.style.zIndex = '200'; objLink.appendChild(objCloseButton); return false; } imgPreloadCloseButton.src = closeButton; // create image var objImage = document.createElement("img"); objImage.setAttribute('id','lightboxImage'); objLink.appendChild(objImage); // create details div, a container for the caption var objLightboxDetails = document.createElement("div"); objLightboxDetails.setAttribute('id','lightboxDetails'); objLightbox.appendChild(objLightboxDetails); // create caption var objCaption = document.createElement("div"); objCaption.setAttribute('id','lightboxCaption'); objCaption.style.display = 'none'; objLightboxDetails.appendChild(objCaption); } } function addLoadEvent(func) { var oldonload = window.onload; if (typeof window.onload != 'function') { window.onload = func; } else { window.onload = function() { oldonload(); func(); } } } addLoadEvent(initLightbox);