| 1 | //** Tab Content script v2.0- © Dynamic Drive DHTML code library (http://www.dynamicdrive.com)
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| 2 | //** Updated Oct 7th, 07 to version 2.0. Contains numerous improvements:
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| 3 | // -Added Auto Mode: Script auto rotates the tabs based on an interval, until a tab is explicitly selected
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| 4 | // -Ability to expand/contract arbitrary DIVs on the page as the tabbed content is expanded/ contracted
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| 5 | // -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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| 6 | // -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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| 7 | //** 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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| 8 | //** 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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| 9 |
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| 10 | ////NO NEED TO EDIT BELOW////////////////////////
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| 11 |
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| 12 | function ddtabcontent(tabinterfaceid){
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| 13 | this.tabinterfaceid=tabinterfaceid //ID of Tab Menu main container
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| 14 | this.tabs=document.getElementById(tabinterfaceid).getElementsByTagName("a") //Get all tab links within container
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| 15 | this.enabletabpersistence=true
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| 16 | 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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| 17 | this.currentTabIndex=0 //Index of currently selected hot tab (tab with sub content) within hottabspositions[] array
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| 18 | this.subcontentids=[] //Array to store ids of the sub contents ("rel" attr values)
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| 19 | this.revcontentids=[] //Array to store ids of arbitrary contents to expand/contact as well ("rev" attr values)
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| 20 | this.selectedClassTarget="link" //keyword to indicate which target element to assign "selected" CSS class ("linkparent" or "link")
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| 21 | }
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| 22 |
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| 23 | ddtabcontent.getCookie=function(Name){
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| 24 | var re=new RegExp(Name+"=[^;]+", "i"); //construct RE to search for target name/value pair
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| 25 | if (document.cookie.match(re)) //if cookie found
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| 26 | return document.cookie.match(re)[0].split("=")[1] //return its value
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| 27 | return ""
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| 28 | }
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| 29 |
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| 30 | ddtabcontent.setCookie=function(name, value){
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| 31 | document.cookie = name+"="+value+";path=/" //cookie value is domain wide (path=/)
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| 32 | }
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| 33 |
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| 34 | ddtabcontent.prototype={
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| 35 |
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| 36 | 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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| 37 | this.cancelautorun() //stop auto cycling of tabs (if running)
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| 38 | var tabref=""
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| 39 | try{
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| 40 | if (typeof tabid_or_position=="string" && document.getElementById(tabid_or_position).getAttribute("rel")) //if specified tab contains "rel" attr
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| 41 | tabref=document.getElementById(tabid_or_position)
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| 42 | else if (parseInt(tabid_or_position)!=NaN && this.tabs[tabid_or_position].getAttribute("rel")) //if specified tab contains "rel" attr
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| 43 | tabref=this.tabs[tabid_or_position]
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| 44 | }
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| 45 | catch(err){alert("Invalid Tab ID or position entered!")}
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| 46 | if (tabref!="") //if a valid tab is found based on function parameter
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| 47 | this.expandtab(tabref) //expand this tab
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| 48 | },
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| 49 |
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| 50 | cycleit:function(dir, autorun){ //PUBLIC function to move foward or backwards through each hot tab (tabinstance.cycleit('foward/back') )
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| 51 | if (dir=="next"){
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| 52 | var currentTabIndex=(this.currentTabIndex<this.hottabspositions.length-1)? this.currentTabIndex+1 : 0
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| 53 | }
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| 54 | else if (dir=="prev"){
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| 55 | var currentTabIndex=(this.currentTabIndex>0)? this.currentTabIndex-1 : this.hottabspositions.length-1
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| 56 | }
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| 57 | if (typeof autorun=="undefined") //if cycleit() is being called by user, versus autorun() function
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| 58 | this.cancelautorun() //stop auto cycling of tabs (if running)
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| 59 | this.expandtab(this.tabs[this.hottabspositions[currentTabIndex]])
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| 60 | },
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| 61 |
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| 62 | setpersist:function(bool){ //PUBLIC function to toggle persistence feature
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| 63 | this.enabletabpersistence=bool
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| 64 | },
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| 65 |
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| 66 | setselectedClassTarget:function(objstr){ //PUBLIC function to set which target element to assign "selected" CSS class ("linkparent" or "link")
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| 67 | this.selectedClassTarget=objstr || "link"
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| 68 | },
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| 69 |
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| 70 | getselectedClassTarget:function(tabref){ //Returns target element to assign "selected" CSS class to
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| 71 | return (this.selectedClassTarget==("linkparent".toLowerCase()))? tabref.parentNode : tabref
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| 72 | },
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| 73 |
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| 74 | urlparamselect:function(tabinterfaceid){
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| 75 | var result=window.location.search.match(new RegExp(tabinterfaceid+"=(\\d+)", "i")) //check for "?tabinterfaceid=2" in URL
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| 76 | return (result==null)? null : parseInt(RegExp.$1) //returns null or index, where index (int) is the selected tab's index
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| 77 | },
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| 78 |
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| 79 | expandtab:function(tabref){
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| 80 | var subcontentid=tabref.getAttribute("rel") //Get id of subcontent to expand
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| 81 | //Get "rev" attr as a string of IDs in the format ",john,george,trey,etc," to easily search through
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| 82 | var associatedrevids=(tabref.getAttribute("rev"))? ","+tabref.getAttribute("rev").replace(/\s+/, "")+"," : ""
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| 83 | this.expandsubcontent(subcontentid)
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| 84 | this.expandrevcontent(associatedrevids)
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| 85 | 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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| 86 | this.getselectedClassTarget(this.tabs[i]).className=(this.tabs[i].getAttribute("rel")==subcontentid)? "selected" : ""
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| 87 | }
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| 88 | if (this.enabletabpersistence) //if persistence enabled, save selected tab position(int) relative to its peers
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| 89 | ddtabcontent.setCookie(this.tabinterfaceid, tabref.tabposition)
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| 90 | this.setcurrenttabindex(tabref.tabposition) //remember position of selected tab within hottabspositions[] array
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| 91 | },
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| 92 |
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| 93 | expandsubcontent:function(subcontentid){
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| 94 | for (var i=0; i<this.subcontentids.length; i++){
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| 95 | var subcontent=document.getElementById(this.subcontentids[i]) //cache current subcontent obj (in for loop)
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| 96 | subcontent.style.display=(subcontent.id==subcontentid)? "block" : "none" //"show" or hide sub content based on matching id attr value
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| 97 | }
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| 98 | },
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| 99 |
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| 100 | expandrevcontent:function(associatedrevids){
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| 101 | var allrevids=this.revcontentids
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| 102 | for (var i=0; i<allrevids.length; i++){ //Loop through rev attributes for all tabs in this tab interface
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| 103 | //if any values stored within associatedrevids matches one within allrevids, expand that DIV, otherwise, contract it
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| 104 | document.getElementById(allrevids[i]).style.display=(associatedrevids.indexOf(","+allrevids[i]+",")!=-1)? "block" : "none"
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| 105 | }
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| 106 | },
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| 107 |
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| 108 | setcurrenttabindex:function(tabposition){ //store current position of tab (within hottabspositions[] array)
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| 109 | for (var i=0; i<this.hottabspositions.length; i++){
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| 110 | if (tabposition==this.hottabspositions[i]){
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| 111 | this.currentTabIndex=i
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| 112 | break
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| 113 | }
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| 114 | }
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| 115 | },
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| 116 |
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| 117 | autorun:function(){ //function to auto cycle through and select tabs based on a set interval
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| 118 | this.cycleit('next', true)
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| 119 | },
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| 120 |
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| 121 | cancelautorun:function(){
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| 122 | if (typeof this.autoruntimer!="undefined")
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| 123 | clearInterval(this.autoruntimer)
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| 124 | },
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| 125 |
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| 126 | init:function(automodeperiod){
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| 127 | var persistedtab=ddtabcontent.getCookie(this.tabinterfaceid) //get position of persisted tab (applicable if persistence is enabled)
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| 128 | var selectedtab=-1 //Currently selected tab index (-1 meaning none)
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| 129 | var selectedtabfromurl=this.urlparamselect(this.tabinterfaceid) //returns null or index from: tabcontent.htm?tabinterfaceid=index
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| 130 | this.automodeperiod=automodeperiod || 0
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| 131 | for (var i=0; i<this.tabs.length; i++){
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| 132 | this.tabs[i].tabposition=i //remember position of tab relative to its peers
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| 133 | if (this.tabs[i].getAttribute("rel")){
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| 134 | var tabinstance=this
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| 135 | this.hottabspositions[this.hottabspositions.length]=i //store position of "hot" tab ("rel" attr defined) relative to its peers
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| 136 | this.subcontentids[this.subcontentids.length]=this.tabs[i].getAttribute("rel") //store id of sub content ("rel" attr value)
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| 137 | this.tabs[i].onclick=function(){
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| 138 | tabinstance.expandtab(this)
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| 139 | tabinstance.cancelautorun() //stop auto cycling of tabs (if running)
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| 140 | return false
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| 141 | }
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| 142 | if (this.tabs[i].getAttribute("rev")){ //if "rev" attr defined, store each value within "rev" as an array element
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| 143 | this.revcontentids=this.revcontentids.concat(this.tabs[i].getAttribute("rev").split(/\s*,\s*/))
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| 144 | }
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| 145 | 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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| 146 | selectedtab=i //Selected tab index, if found
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| 147 | }
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| 148 | }
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| 149 | } //END for loop
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| 150 | if (selectedtab!=-1) //if a valid default selected tab index is found
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| 151 | this.expandtab(this.tabs[selectedtab]) //expand selected tab (either from URL parameter, persistent feature, or class="selected" class)
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| 152 | else //if no valid default selected index found
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| 153 | this.expandtab(this.tabs[this.hottabspositions[0]]) //Just select first tab that contains a "rel" attr
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| 154 | if (parseInt(this.automodeperiod)>500 && this.hottabspositions.length>1){
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| 155 | this.autoruntimer=setInterval(function(){tabinstance.autorun()}, this.automodeperiod)
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| 156 | }
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| 157 | } //END int() function
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| 158 |
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| 159 | } //END Prototype assignment |
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