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From 2012.igem.org

//** Simple Controls Gallery- (c) Dynamic Drive DHTML code library: http://www.dynamicdrive.com //** Dec 7th, 08'- Script created //** February 6th, 09'- Updated to v 1.3: //1) Adds Description Panel to optionally show a textual description for each slide //2) In Auto Play mode, you can now set the number of cycles before gallery stops. //3) Inside oninit() and onslide(), keyword "this" now references the current gallery instance

//** May 16th, 11'- Updated to v 1.4: Adds ability to show image gallery only after all images within gallery has been loaded. Requires jQuery 1.5+

var simpleGallery_navpanel={ loadinggif: 'https://static.igem.org/mediawiki/2012/8/8f/Ajaxload.gif', //full path or URL to loading gif image panel: {height:'45px', opacity:0.5, paddingTop:'5px', fontStyle:'bold 11px Verdana'}, //customize nav panel container images: [ 'https://static.igem.org/mediawiki/2012/9/95/Slideshow-Left.gif', 'https://static.igem.org/mediawiki/2012/6/69/Slideshow-Play.gif', 'https://static.igem.org/mediawiki/2012/0/0d/Slideshow-Right.gif', 'https://static.igem.org/mediawiki/2012/b/bb/Pause.gif'], //nav panel images (in that order) imageSpacing: {offsetTop:[-4, 0, -4], spacing:10}, //top offset of left, play, and right images, PLUS spacing between the 3 images slideduration: 500 //duration of slide up animation to reveal panel }

function simpleGallery(settingarg){ this.setting=settingarg settingarg=null var setting=this.setting setting.panelheight=(parseInt(setting.navpanelheight)>5)? parseInt(setting.navpanelheight) : parseInt(simpleGallery_navpanel.panel.height) setting.fadeduration=parseInt(setting.fadeduration) setting.curimage=(setting.persist)? simpleGallery.routines.getCookie("gallery-"+setting.wrapperid) : 0 setting.curimage=setting.curimage || 0 //account for curimage being null if cookie is empty setting.preloadfirst=(!jQuery.Deferred)? false : (typeof setting.preloadfirst!="undefined")? setting.preloadfirst : true //Boolean on whether to preload all images before showing gallery setting.ispaused=!setting.autoplay[0] //ispaused reflects current state of gallery, autoplay[0] indicates whether gallery is set to auto play setting.currentstep=0 //keep track of # of slides slideshow has gone through setting.totalsteps=setting.imagearray.length*setting.autoplay[2] //Total steps limit: # of images x # of user specified cycles setting.fglayer=0, setting.bglayer=1 //index of active and background layer (switches after each change of slide) setting.oninit=setting.oninit || function(){} setting.onslide=setting.onslide || function(){} var preloadimages=[], longestdesc=null, loadedimages=0 var dfd = (setting.preloadfirst)? jQuery.Deferred() : {resolve:function(){}, done:function(f){f()}} //create real deferred object unless preloadfirst setting is false or browser doesn't support it setting.longestdesc="" //get longest description of all slides. If no desciptions defined, variable contains "" setting.$loadinggif=(function(){ //preload and ref ajax loading gif var loadgif=new Image() loadgif.src=simpleGallery_navpanel.loadinggif return jQuery(loadgif).css({verticalAlign:'middle'}).wrap('<div style="position:absolute;text-align:center;width:100%;height:100%" />').parent() })() for (var i=0; i<setting.imagearray.length; i++){ //preload slideshow images preloadimages[i]=new Image() preloadimages[i].src=setting.imagearray[i][0] if (setting.imagearray[i][3] && setting.imagearray[i][3].length>setting.longestdesc.length) setting.longestdesc=setting.imagearray[i][3] jQuery(preloadimages[i]).bind('load error', function(){ loadedimages++ if (loadedimages==setting.imagearray.length){ dfd.resolve() //indicate all images have been loaded } }) } var slideshow=this jQuery(document).ready(function($){ var setting=slideshow.setting setting.$wrapperdiv=$('#'+setting.wrapperid).css({position:'relative', visibility:'visible', background:'black', overflow:'hidden', width:setting.dimensions[0], height:setting.dimensions[1]}).empty() //main gallery DIV if (setting.$wrapperdiv.length==0){ //if no wrapper DIV found alert("Error: DIV with ID \""+setting.wrapperid+"\" not found on page.") return }

setting.$gallerylayers=$('') //two stacked DIVs to display the actual slide

.css({position:'absolute', left:0, top:0}) .appendTo(setting.$wrapperdiv) setting.$loadinggif.css({top:setting.dimensions[1]/2-30}).appendTo(setting.$wrapperdiv) //30 is assumed height of ajax loading gif setting.gallerylayers=setting.$gallerylayers.get() //cache stacked DIVs as DOM objects setting.navbuttons=simpleGallery.routines.addnavpanel(setting) //get 4 nav buttons DIVs as DOM objects if (setting.longestdesc!="") //if at least one slide contains a description (feature is enabled) setting.descdiv=simpleGallery.routines.adddescpanel(setting) $(setting.navbuttons).filter('img.navimages').css({opacity:0.8}) .bind('mouseover mouseout', function(e){ $(this).css({opacity:(e.type=="mouseover")? 1 : 0.8}) }) .bind('click', function(e){ var keyword=e.target.title.toLowerCase() slideshow.navigate(keyword) //assign behavior to nav images }) dfd.done(function(){ //execute when all images have loaded setting.$loadinggif.remove() setting.$wrapperdiv.bind('mouseenter', function(){slideshow.showhidenavpanel('show')}) setting.$wrapperdiv.bind('mouseleave', function(){slideshow.showhidenavpanel('hide')}) slideshow.showslide(setting.curimage) //show initial slide setting.oninit.call(slideshow) //trigger oninit() event $(window).bind('unload', function(){ //clean up and persist $(slideshow.setting.navbuttons).unbind() if (slideshow.setting.persist) //remember last shown image's index simpleGallery.routines.setCookie("gallery-"+setting.wrapperid, setting.curimage) jQuery.each(slideshow.setting, function(k){ if (slideshow.setting[k] instanceof Array){ for (var i=0; i<slideshow.setting[k].length; i++){ if (slideshow.setting[k][i].tagName=="DIV") //catches 2 gallerylayer divs, gallerystatus div slideshow.setting[k][i].innerHTML=null slideshow.setting[k][i]=null } } if (slideshow.setting[k].innerHTML) //catch gallerydesctext div slideshow.setting[k].innerHTML=null slideshow.setting[k]=null }) slideshow=slideshow.setting=null }) }) //end deferred code }) //end jQuery domload }

simpleGallery.prototype={

navigate:function(keyword){ clearTimeout(this.setting.playtimer) this.setting.totalsteps=100000 //if any of the nav buttons are clicked on, set totalsteps limit to an "unreachable" number if (!isNaN(parseInt(keyword))){ this.showslide(parseInt(keyword)) } else if (/(prev)|(next)/i.test(keyword)){ this.showslide(keyword.toLowerCase()) } else{ //if play|pause button var slideshow=this var $playbutton=$(this.setting.navbuttons).eq(1) if (!this.setting.ispaused){ //if pause Gallery this.setting.autoplay[0]=false $playbutton.attr({title:'Play', src:simpleGallery_navpanel.images[1]}) } else if (this.setting.ispaused){ //if play Gallery this.setting.autoplay[0]=true this.setting.playtimer=setTimeout(function(){slideshow.showslide('next')}, this.setting.autoplay[1]) $playbutton.attr({title:'Pause', src:simpleGallery_navpanel.images[3]}) } slideshow.setting.ispaused=!slideshow.setting.ispaused } },

showslide:function(keyword){ var slideshow=this var setting=slideshow.setting var totalimages=setting.imagearray.length var imgindex=(keyword=="next")? (setting.curimage<totalimages-1? setting.curimage+1 : 0) : (keyword=="prev")? (setting.curimage>0? setting.curimage-1 : totalimages-1) : Math.min(keyword, totalimages-1) setting.gallerylayers[setting.bglayer].innerHTML=simpleGallery.routines.getSlideHTML(setting.imagearray[imgindex]) setting.$gallerylayers.eq(setting.bglayer).css({zIndex:1000, opacity:0}) //background layer becomes foreground .stop().css({opacity:0}).animate({opacity:1}, setting.fadeduration, function(){ //Callback function after fade animation is complete: clearTimeout(setting.playtimer) setting.gallerylayers[setting.bglayer].innerHTML=null //empty bglayer (previously fglayer before setting.fglayer=setting.bglayer was set below) try{ setting.onslide.call(slideshow, setting.gallerylayers[setting.fglayer], setting.curimage) }catch(e){ alert("Simple Controls Gallery: An error has occured somwhere in your code attached to the \"onslide\" event: "+e) } setting.currentstep+=1 if (setting.autoplay[0]){ if (setting.currentstep<=setting.totalsteps) setting.playtimer=setTimeout(function(){slideshow.showslide('next')}, setting.autoplay[1]) else slideshow.navigate("play/pause") } }) //end callback function setting.gallerylayers[setting.fglayer].style.zIndex=999 //foreground layer becomes background setting.fglayer=setting.bglayer setting.bglayer=(setting.bglayer==0)? 1 : 0 setting.curimage=imgindex setting.navbuttons[3].innerHTML=(setting.curimage+1) + '/' + setting.imagearray.length if (setting.imagearray[imgindex][3]){ //if this slide contains a description setting.$descpanel.css({visibility:'visible'}) setting.descdiv.innerHTML=setting.imagearray[imgindex][3] } else if (setting.longestdesc!=""){ //if at least one slide contains a description (feature is enabled) setting.descdiv.innerHTML=null setting.$descpanel.css({visibility:'hidden'})

} },

showhidenavpanel:function(state){ var setting=this.setting var endpoint=(state=="show")? setting.dimensions[1]-setting.panelheight : this.setting.dimensions[1] setting.$navpanel.stop().animate({top:endpoint}, simpleGallery_navpanel.slideduration) if (setting.longestdesc!="") //if at least one slide contains a description (feature is enabled) this.showhidedescpanel(state) },

showhidedescpanel:function(state){ var setting=this.setting var endpoint=(state=="show")? 0 : -setting.descpanelheight setting.$descpanel.stop().animate({top:endpoint}, simpleGallery_navpanel.slideduration) } }

simpleGallery.routines={

getSlideHTML:function(imgelement){ var layerHTML=(imgelement[1])? '<a href="'+imgelement[1]+'" target="'+imgelement[2]+'">\n' : //hyperlink slide? layerHTML+='<img src="'+imgelement[0]+'" style="border-width:0" />' layerHTML+=(imgelement[1])? '</a>' : return layerHTML //return HTML for this layer },

addnavpanel:function(setting){ var interfaceHTML= for (var i=0; i<3; i++){ var imgstyle='position:relative; border:0; cursor:hand; cursor:pointer; top:'+simpleGallery_navpanel.imageSpacing.offsetTop[i]+'px; margin-right:'+(i!=2? simpleGallery_navpanel.imageSpacing.spacing+'px' : 0) var title=(i==0? 'Prev' : (i==1)? (setting.ispaused? 'Play' : 'Pause') : 'Next') var imagesrc=(i==1)? simpleGallery_navpanel.images[(setting.ispaused)? 1 : 3] : simpleGallery_navpanel.images[i] interfaceHTML+='<img class="navimages" title="' + title + '" src="'+ imagesrc +'" style="'+imgstyle+'" /> ' }

interfaceHTML+='' setting.$navpanel=$('')

.css({position:'absolute', width:'100%', height:setting.panelheight, left:0, top:setting.dimensions[1], font:simpleGallery_navpanel.panel.fontStyle, zIndex:'1001'}) .appendTo(setting.$wrapperdiv)

$('') //create inner nav panel DIVs

.css({position:'absolute', left:0, top:0, width:'100%', height:'100%'}) .eq(0).css({background:'black', opacity:simpleGallery_navpanel.panel.opacity}).end() //"navpanelbg" div .eq(1).css({paddingTop:simpleGallery_navpanel.panel.paddingTop, textAlign:'center', color:'white'}).html(interfaceHTML).end() //"navpanelfg" div .appendTo(setting.$navpanel) return setting.$navpanel.find('img.navimages, div.gallerystatus').get() //return 4 nav related images and DIVs as DOM objects },

adddescpanel:function(setting){

setting.$descpanel=$('')

.css({position:'absolute', width:'100%', left:0, top:-1000, zIndex:'1001'}) .find('div').css({position:'absolute', left:0, top:0, width:'100%'}) .eq(0).css({background:'black', opacity:simpleGallery_navpanel.panel.opacity}).end() //"gallerydescbg" div .eq(1).css({color:'white'}).end() //"gallerydescfg" div .eq(2).html(setting.longestdesc).end().end() .appendTo(setting.$wrapperdiv) var $gallerydesctext=setting.$descpanel.find('div.gallerydesctext') setting.descpanelheight=$gallerydesctext.outerHeight() setting.$descpanel.css({top:-setting.descpanelheight, height:setting.descpanelheight}).find('div').css({height:'100%'}) return setting.$descpanel.find('div.gallerydesctext').get(0) //return gallery description DIV as a DOM object },

getCookie:function(Name){ var re=new RegExp(Name+"=[^;]+", "i"); //construct RE to search for target name/value pair if (document.cookie.match(re)) //if cookie found return document.cookie.match(re)[0].split("=")[1] //return its value return null },

setCookie:function(name, value){ document.cookie = name+"=" + value + ";path=/" } }