209 lines
12 KiB
JavaScript
209 lines
12 KiB
JavaScript
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//** Accordion Content script: By Dynamic Drive, at http://www.dynamicdrive.com
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//** Created: Jan 7th, 08'
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//Version 1.3: April 3rd, 08':
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//**1) Script now no longer conflicts with other JS frameworks
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//**2) Adds custom oninit() and onopenclose() event handlers that fire when Accordion Content instance has initialized, plus whenever a header is opened/closed
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//**3) Adds support for expanding header(s) using the URL parameter (ie: http://mysite.com/accordion.htm?headerclass=0,1)
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//April 9th, 08': Fixed "defaultexpanded" setting not working when page first loads
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//Version 1.4: June 4th, 08':
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//**1) Added option to activate a header "mouseover" instead of the default "click"
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//**2) Bug persistence not working when used with jquery 1.2.6
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//Version 1.5: June 20th, 08':
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//**1) Adds new "onemustopen:true/false" parameter, which lets you set whether at least one header should be open at all times (so never all closed).
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//**2) Changed cookie path to site wide for persistence feature
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//**3) Fixed bug so "expandedindices" parameter in oninit(headers, expandedindices) returns empty array [] instead of [-1] when no expanded headers found
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//**1) Version 1.5.1: June 27th, 08': Fixed "defaultexpanded" setting not working properly when used with jquery 1.2.6
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//Version 1.6: Oct 3rd, 08':
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//**1) Adds new "mouseoverdelay" param that sets delay before headers are activated when "revealtype" param is set to "mouseover"
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//**2) Fixed bug with "onemustopen" param not working properly when "revealtype" is set to "click"
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//Version 1.7: March 24th, 09': Adds a 3rd revealtype setting "clickgo", which causes browser to navigate to URL specified inside the header after expanding its contents.
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//Version 1.7.1: May 28th, 09': Fixed issue that causes margins/paddings in accordion DIVs to be lost in IE8
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var ddaccordion={
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contentclassname:{}, //object to store corresponding contentclass name based on headerclass
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expandone:function(headerclass, selected){ //PUBLIC function to expand a particular header
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this.toggleone(headerclass, selected, "expand")
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},
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collapseone:function(headerclass, selected){ //PUBLIC function to collapse a particular header
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this.toggleone(headerclass, selected, "collapse")
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},
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expandall:function(headerclass){ //PUBLIC function to expand all headers based on their shared CSS classname
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var $=jQuery
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var $headers=$('.'+headerclass)
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$('.'+this.contentclassname[headerclass]+':hidden').each(function(){
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$headers.eq(parseInt($(this).attr('contentindex'))).trigger("evt_accordion")
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})
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},
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collapseall:function(headerclass){ //PUBLIC function to collapse all headers based on their shared CSS classname
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var $=jQuery
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var $headers=$('.'+headerclass)
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$('.'+this.contentclassname[headerclass]+':visible').each(function(){
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$headers.eq(parseInt($(this).attr('contentindex'))).trigger("evt_accordion")
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})
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},
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toggleone:function(headerclass, selected, optstate){ //PUBLIC function to expand/ collapse a particular header
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var $=jQuery
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var $targetHeader=$('.'+headerclass).eq(selected)
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var $subcontent=$('.'+this.contentclassname[headerclass]).eq(selected)
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if (typeof optstate=="undefined" || optstate=="expand" && $subcontent.is(":hidden") || optstate=="collapse" && $subcontent.is(":visible"))
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$targetHeader.trigger("evt_accordion")
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},
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expandit:function($targetHeader, $targetContent, config, useractivated, directclick){
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this.transformHeader($targetHeader, config, "expand")
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$targetContent.slideDown(config.animatespeed, function(){
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config.onopenclose($targetHeader.get(0), parseInt($targetHeader.attr('headerindex')), $targetContent.css('display'), useractivated)
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if (config.postreveal=="gotourl" && directclick){ //if revealtype is "Go to Header URL upon click", and this is a direct click on the header
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var targetLink=($targetHeader.is("a"))? $targetHeader.get(0) : $targetHeader.find('a:eq(0)').get(0)
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if (targetLink) //if this header is a link
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setTimeout(function(){location=targetLink.href}, 200) //ignore link target, as window.open(targetLink, targetLink.target) doesn't work in FF if popup blocker enabled
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}
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})
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},
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collapseit:function($targetHeader, $targetContent, config, isuseractivated){
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this.transformHeader($targetHeader, config, "collapse")
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$targetContent.slideUp(config.animatespeed, function(){config.onopenclose($targetHeader.get(0), parseInt($targetHeader.attr('headerindex')), $targetContent.css('display'), isuseractivated)})
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},
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transformHeader:function($targetHeader, config, state){
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$targetHeader.addClass((state=="expand")? config.cssclass.expand : config.cssclass.collapse) //alternate btw "expand" and "collapse" CSS classes
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.removeClass((state=="expand")? config.cssclass.collapse : config.cssclass.expand)
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if (config.htmlsetting.location=='src'){ //Change header image (assuming header is an image)?
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$targetHeader=($targetHeader.is("img"))? $targetHeader : $targetHeader.find('img').eq(0) //Set target to either header itself, or first image within header
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$targetHeader.attr('src', (state=="expand")? config.htmlsetting.expand : config.htmlsetting.collapse) //change header image
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}
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else if (config.htmlsetting.location=="prefix") //if change "prefix" HTML, locate dynamically added ".accordprefix" span tag and change it
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$targetHeader.find('.accordprefix').html((state=="expand")? config.htmlsetting.expand : config.htmlsetting.collapse)
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else if (config.htmlsetting.location=="suffix")
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$targetHeader.find('.accordsuffix').html((state=="expand")? config.htmlsetting.expand : config.htmlsetting.collapse)
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},
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urlparamselect:function(headerclass){
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var result=window.location.search.match(new RegExp(headerclass+"=((\\d+)(,(\\d+))*)", "i")) //check for "?headerclass=2,3,4" in URL
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if (result!=null)
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result=RegExp.$1.split(',')
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return result //returns null, [index], or [index1,index2,etc], where index are the desired selected header indices
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},
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getCookie:function(Name){
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var re=new RegExp(Name+"=[^;]+", "i") //construct RE to search for target name/value pair
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if (document.cookie.match(re)) //if cookie found
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return document.cookie.match(re)[0].split("=")[1] //return its value
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return null
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},
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setCookie:function(name, value){
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document.cookie = name + "=" + value + "; path=/"
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},
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init:function(config){
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document.write('<style type="text/css">\n')
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document.write('.'+config.contentclass+'{display: none}\n') //generate CSS to hide contents
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document.write('<\/style>')
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jQuery(document).ready(function($){
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ddaccordion.urlparamselect(config.headerclass)
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var persistedheaders=ddaccordion.getCookie(config.headerclass)
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ddaccordion.contentclassname[config.headerclass]=config.contentclass //remember contentclass name based on headerclass
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config.cssclass={collapse: config.toggleclass[0], expand: config.toggleclass[1]} //store expand and contract CSS classes as object properties
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config.revealtype=config.revealtype || "click"
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config.revealtype=config.revealtype.replace(/mouseover/i, "mouseenter")
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if (config.revealtype=="clickgo"){
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config.postreveal="gotourl" //remember added action
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config.revealtype="click" //overwrite revealtype to "click" keyword
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}
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if (typeof config.togglehtml=="undefined")
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config.htmlsetting={location: "none"}
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else
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config.htmlsetting={location: config.togglehtml[0], collapse: config.togglehtml[1], expand: config.togglehtml[2]} //store HTML settings as object properties
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config.oninit=(typeof config.oninit=="undefined")? function(){} : config.oninit //attach custom "oninit" event handler
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config.onopenclose=(typeof config.onopenclose=="undefined")? function(){} : config.onopenclose //attach custom "onopenclose" event handler
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var lastexpanded={} //object to hold reference to last expanded header and content (jquery objects)
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var expandedindices=ddaccordion.urlparamselect(config.headerclass) || ((config.persiststate && persistedheaders!=null)? persistedheaders : config.defaultexpanded)
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if (typeof expandedindices=='string') //test for string value (exception is config.defaultexpanded, which is an array)
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expandedindices=expandedindices.replace(/c/ig, '').split(',') //transform string value to an array (ie: "c1,c2,c3" becomes [1,2,3]
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var $subcontents=$('.'+config["contentclass"])
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if (expandedindices.length==1 && expandedindices[0]=="-1") //check for expandedindices value of [-1], indicating persistence is on and no content expanded
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expandedindices=[]
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if (config["collapseprev"] && expandedindices.length>1) //only allow one content open?
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expandedindices=[expandedindices.pop()] //return last array element as an array (for sake of jQuery.inArray())
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if (config["onemustopen"] && expandedindices.length==0) //if at least one content should be open at all times and none are, open 1st header
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expandedindices=[0]
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$('.'+config["headerclass"]).each(function(index){ //loop through all headers
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if (/(prefix)|(suffix)/i.test(config.htmlsetting.location) && $(this).html()!=""){ //add a SPAN element to header depending on user setting and if header is a container tag
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$('<span class="accordprefix"></span>').prependTo(this)
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$('<span class="accordsuffix"></span>').appendTo(this)
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}
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$(this).attr('headerindex', index+'h') //store position of this header relative to its peers
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$subcontents.eq(index).attr('contentindex', index+'c') //store position of this content relative to its peers
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var $subcontent=$subcontents.eq(index)
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var needle=(typeof expandedindices[0]=="number")? index : index+'' //check for data type within expandedindices array- index should match that type
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if (jQuery.inArray(needle, expandedindices)!=-1){ //check for headers that should be expanded automatically (convert index to string first)
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if (config.animatedefault==false)
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$subcontent.show()
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ddaccordion.expandit($(this), $subcontent, config, false) //Last param sets 'isuseractivated' parameter
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lastexpanded={$header:$(this), $content:$subcontent}
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} //end check
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else{
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$subcontent.hide()
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config.onopenclose($(this).get(0), parseInt($(this).attr('headerindex')), $subcontent.css('display'), false) //Last Boolean value sets 'isuseractivated' parameter
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ddaccordion.transformHeader($(this), config, "collapse")
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}
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})
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$('.'+config["headerclass"]).bind("evt_accordion", function(e, isdirectclick){ //assign custom event handler that expands/ contacts a header
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var $subcontent=$subcontents.eq(parseInt($(this).attr('headerindex'))) //get subcontent that should be expanded/collapsed
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if ($subcontent.css('display')=="none"){
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ddaccordion.expandit($(this), $subcontent, config, true, isdirectclick) //2nd last param sets 'isuseractivated' parameter
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if (config["collapseprev"] && lastexpanded.$header && $(this).get(0)!=lastexpanded.$header.get(0)){ //collapse previous content?
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ddaccordion.collapseit(lastexpanded.$header, lastexpanded.$content, config, true) //Last Boolean value sets 'isuseractivated' parameter
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}
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lastexpanded={$header:$(this), $content:$subcontent}
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}
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else if (!config["onemustopen"] || config["onemustopen"] && lastexpanded.$header && $(this).get(0)!=lastexpanded.$header.get(0)){
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ddaccordion.collapseit($(this), $subcontent, config, true) //Last Boolean value sets 'isuseractivated' parameter
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}
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})
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$('.'+config["headerclass"]).bind(config.revealtype, function(){
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if (config.revealtype=="mouseenter"){
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clearTimeout(config.revealdelay)
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var headerindex=parseInt($(this).attr("headerindex"))
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config.revealdelay=setTimeout(function(){ddaccordion.expandone(config["headerclass"], headerindex)}, config.mouseoverdelay || 0)
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}
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else{
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$(this).trigger("evt_accordion", [true])
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return false //cancel default click behavior
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}
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})
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$('.'+config["headerclass"]).bind("mouseleave", function(){
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clearTimeout(config.revealdelay)
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})
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config.oninit($('.'+config["headerclass"]).get(), expandedindices)
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$(window).bind('unload', function(){ //clean up and persist on page unload
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$('.'+config["headerclass"]).unbind()
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var expandedindices=[]
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$('.'+config["contentclass"]+":visible").each(function(index){ //get indices of expanded headers
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expandedindices.push($(this).attr('contentindex'))
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})
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if (config.persiststate==true && $('.'+config["headerclass"]).length>0){ //persist state?
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expandedindices=(expandedindices.length==0)? '-1c' : expandedindices //No contents expanded, indicate that with dummy '-1c' value?
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ddaccordion.setCookie(config.headerclass, expandedindices)
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}
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})
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})
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}
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}
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