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//** Tab Content script v2.0- ? Dynamic Drive DHTML code library (http://www.dynamicdrive.com)
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//** Updated Oct 7th, 07 to version 2.0. Contains numerous improvements:
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// -Added Auto Mode: Script auto rotates the tabs based on an interval, until a tab is explicitly selected
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// -Ability to expand/contract arbitrary DIVs on the page as the tabbed content is expanded/ contracted
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// -Ability to dynamically select a tab either based on its position within its peers, or its ID attribute (give the target tab one 1st)
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// -Ability to set where the CSS classname "selected" get assigned- either to the target tab's link ("A"), or its parent container
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//** Updated Feb 18th, 08 to version 2.1: Adds a "tabinstance.cycleit(dir)" method to cycle forward or backward between tabs dynamically
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//** Updated April 8th, 08 to version 2.2: Adds support for expanding a tab using a URL parameter (ie: http://mysite.com/tabcontent.htm?tabinterfaceid=0)
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////NO NEED TO EDIT BELOW////////////////////////
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function ddtabcontent(tabinterfaceid){
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this.tabinterfaceid=tabinterfaceid //ID of Tab Menu main container
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this.tabs=document.getElementById(tabinterfaceid).getElementsByTagName("a") //Get all tab links within container
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this.enabletabpersistence=true
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this.hottabspositions=[] //Array to store position of tabs that have a "rel" attr defined, relative to all tab links, within container
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this.currentTabIndex=0 //Index of currently selected hot tab (tab with sub content) within hottabspositions[] array
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this.subcontentids=[] //Array to store ids of the sub contents ("rel" attr values)
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this.revcontentids=[] //Array to store ids of arbitrary contents to expand/contact as well ("rev" attr values)
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this.selectedClassTarget="link" //keyword to indicate which target element to assign "selected" CSS class ("linkparent" or "link")
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}
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ddtabcontent.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 ""
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}
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ddtabcontent.setCookie=function(name, value){
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document.cookie = name+"="+value+";path=/" //cookie value is domain wide (path=/)
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}
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ddtabcontent.prototype={
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expandit:function(tabid_or_position){ //PUBLIC function to select a tab either by its ID or position(int) within its peers
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this.cancelautorun() //stop auto cycling of tabs (if running)
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var tabref=""
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try{
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if (typeof tabid_or_position=="string" && document.getElementById(tabid_or_position).getAttribute("rel")) //if specified tab contains "rel" attr
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tabref=document.getElementById(tabid_or_position)
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else if (parseInt(tabid_or_position)!=NaN && this.tabs[tabid_or_position].getAttribute("rel")) //if specified tab contains "rel" attr
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tabref=this.tabs[tabid_or_position]
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}
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catch(err){alert("Invalid Tab ID or position entered!")}
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if (tabref!="") //if a valid tab is found based on function parameter
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this.expandtab(tabref) //expand this tab
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},
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cycleit:function(dir, autorun){ //PUBLIC function to move foward or backwards through each hot tab (tabinstance.cycleit('foward/back') )
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if (dir=="next"){
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var currentTabIndex=(this.currentTabIndex<this.hottabspositions.length-1)? this.currentTabIndex+1 : 0
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}
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else if (dir=="prev"){
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var currentTabIndex=(this.currentTabIndex>0)? this.currentTabIndex-1 : this.hottabspositions.length-1
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}
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if (typeof autorun=="undefined") //if cycleit() is being called by user, versus autorun() function
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this.cancelautorun() //stop auto cycling of tabs (if running)
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this.expandtab(this.tabs[this.hottabspositions[currentTabIndex]])
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},
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setpersist:function(bool){ //PUBLIC function to toggle persistence feature
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this.enabletabpersistence=bool
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},
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setselectedClassTarget:function(objstr){ //PUBLIC function to set which target element to assign "selected" CSS class ("linkparent" or "link")
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this.selectedClassTarget=objstr || "link"
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},
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getselectedClassTarget:function(tabref){ //Returns target element to assign "selected" CSS class to
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return (this.selectedClassTarget==("linkparent".toLowerCase()))? tabref.parentNode : tabref
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},
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urlparamselect:function(tabinterfaceid){
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var result=window.location.search.match(new RegExp(tabinterfaceid+"=(\\d+)", "i")) //check for "?tabinterfaceid=2" in URL
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return (result==null)? null : parseInt(RegExp.$1) //returns null or index, where index (int) is the selected tab's index
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},
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expandtab:function(tabref){
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var subcontentid=tabref.getAttribute("rel") //Get id of subcontent to expand
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//Get "rev" attr as a string of IDs in the format ",john,george,trey,etc," to easily search through
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var associatedrevids=(tabref.getAttribute("rev"))? ","+tabref.getAttribute("rev").replace(/\s+/, "")+"," : ""
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this.expandsubcontent(subcontentid)
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this.expandrevcontent(associatedrevids)
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for (var i=0; i<this.tabs.length; i++){ //Loop through all tabs, and assign only the selected tab the CSS class "selected"
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this.getselectedClassTarget(this.tabs[i]).className=(this.tabs[i].getAttribute("rel")==subcontentid)? "selected" : ""
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}
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if (this.enabletabpersistence) //if persistence enabled, save selected tab position(int) relative to its peers
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ddtabcontent.setCookie(this.tabinterfaceid, tabref.tabposition)
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this.setcurrenttabindex(tabref.tabposition) //remember position of selected tab within hottabspositions[] array
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},
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expandsubcontent:function(subcontentid){
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for (var i=0; i<this.subcontentids.length; i++){
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var subcontent=document.getElementById(this.subcontentids[i]) //cache current subcontent obj (in for loop)
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subcontent.style.display=(subcontent.id==subcontentid)? "block" : "none" //"show" or hide sub content based on matching id attr value
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}
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},
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expandrevcontent:function(associatedrevids){
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var allrevids=this.revcontentids
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for (var i=0; i<allrevids.length; i++){ //Loop through rev attributes for all tabs in this tab interface
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//if any values stored within associatedrevids matches one within allrevids, expand that DIV, otherwise, contract it
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document.getElementById(allrevids[i]).style.display=(associatedrevids.indexOf(","+allrevids[i]+",")!=-1)? "block" : "none"
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}
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},
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setcurrenttabindex:function(tabposition){ //store current position of tab (within hottabspositions[] array)
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for (var i=0; i<this.hottabspositions.length; i++){
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if (tabposition==this.hottabspositions[i]){
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this.currentTabIndex=i
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break
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}
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}
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},
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autorun:function(){ //function to auto cycle through and select tabs based on a set interval
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this.cycleit('next', true)
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},
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cancelautorun:function(){
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if (typeof this.autoruntimer!="undefined")
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clearInterval(this.autoruntimer)
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},
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init:function(automodeperiod){
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var persistedtab=ddtabcontent.getCookie(this.tabinterfaceid) //get position of persisted tab (applicable if persistence is enabled)
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var selectedtab=-1 //Currently selected tab index (-1 meaning none)
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var selectedtabfromurl=this.urlparamselect(this.tabinterfaceid) //returns null or index from: tabcontent.htm?tabinterfaceid=index
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this.automodeperiod=automodeperiod || 0
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for (var i=0; i<this.tabs.length; i++){
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this.tabs[i].tabposition=i //remember position of tab relative to its peers
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if (this.tabs[i].getAttribute("rel")){
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var tabinstance=this
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this.hottabspositions[this.hottabspositions.length]=i //store position of "hot" tab ("rel" attr defined) relative to its peers
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this.subcontentids[this.subcontentids.length]=this.tabs[i].getAttribute("rel") //store id of sub content ("rel" attr value)
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this.tabs[i].onclick=function(){
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tabinstance.expandtab(this)
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tabinstance.cancelautorun() //stop auto cycling of tabs (if running)
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return false
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}
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if (this.tabs[i].getAttribute("rev")){ //if "rev" attr defined, store each value within "rev" as an array element
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this.revcontentids=this.revcontentids.concat(this.tabs[i].getAttribute("rev").split(/\s*,\s*/))
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}
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if (selectedtabfromurl==i || this.enabletabpersistence && selectedtab==-1 && parseInt(persistedtab)==i || !this.enabletabpersistence && selectedtab==-1 && this.getselectedClassTarget(this.tabs[i]).className=="selected"){
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selectedtab=i //Selected tab index, if found
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}
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}
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} //END for loop
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if (selectedtab!=-1) //if a valid default selected tab index is found
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this.expandtab(this.tabs[selectedtab]) //expand selected tab (either from URL parameter, persistent feature, or class="selected" class)
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else //if no valid default selected index found
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this.expandtab(this.tabs[this.hottabspositions[0]]) //Just select first tab that contains a "rel" attr
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if (parseInt(this.automodeperiod)>500 && this.hottabspositions.length>1){
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this.autoruntimer=setInterval(function(){tabinstance.autorun()}, this.automodeperiod)
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}
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} //END int() function
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} //END Prototype assignment
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