function ddtabcontent(tabinterfaceid) {
this.tabinterfaceid = tabinterfaceid //ID of Tab Menu main container
this.tabs = document.getElementById(tabinterfaceid).getElementsByTagName("a") //Get all tab links within container
this.enabletabpersistence = true
this.hottabspositions = [] //Array to store position of tabs that have a "rel" attr defined, relative to all tab links, within container
this.currentTabIndex = 0 //Index of currently selected hot tab (tab with sub content) within hottabspositions[] array
this.subcontentids = [] //Array to store ids of the sub contents ("rel" attr values)
this.revcontentids = [] //Array to store ids of arbitrary contents to expand/contact as well ("rev" attr values)
this.selectedClassTarget = "link" //keyword to indicate which target element to assign "selected" CSS class ("linkparent" or "link")
}
ddtabcontent.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 ""
}
ddtabcontent.setCookie = function(name, value) {
document.cookie = name+"="+value+";path=/" //cookie value is domain wide (path=/)
}
ddtabcontent.prototype = {
expandit: function(tabid_or_position) { //PUBLIC function to select a tab either by its ID or position(int) within its peers
this.cancelautorun() //stop auto cycling of tabs (if running)
var tabref = ""
try {
if (typeof tabid_or_position == "string" && document.getElementById(tabid_or_position).getAttribute("rel")) //if specified tab contains "rel" attr
tabref = document.getElementById(tabid_or_position)
else if (parseInt(tabid_or_position) != NaN && this.tabs[tabid_or_position].getAttribute("rel")) //if specified tab contains "rel" attr
tabref = this.tabs[tabid_or_position]
}
catch (err) { alert("Invalid Tab ID or position entered!") }
if (tabref != "") //if a valid tab is found based on function parameter
this.expandtab(tabref) //expand this tab
},
cycleit: function(dir, autorun) { //PUBLIC function to move foward or backwards through each hot tab (tabinstance.cycleit('foward/back') )
if (dir == "next") {
var currentTabIndex = (this.currentTabIndex < this.hottabspositions.length-1) ? this.currentTabIndex+1 : 0
}
else if (dir == "prev") {
var currentTabIndex = (this.currentTabIndex > 0) ? this.currentTabIndex-1 : this.hottabspositions.length-1
}
if (typeof autorun == "undefined") //if cycleit() is being called by user, versus autorun() function
this.cancelautorun() //stop auto cycling of tabs (if running)
this.expandtab(this.tabs[this.hottabspositions[currentTabIndex]])
},
setpersist: function(bool) { //PUBLIC function to toggle persistence feature
this.enabletabpersistence = bool
},
setselectedClassTarget: function(objstr) { //PUBLIC function to set which target element to assign "selected" CSS class ("linkparent" or "link")
this.selectedClassTarget = objstr || "link"
},
getselectedClassTarget: function(tabref) { //Returns target element to assign "selected" CSS class to
return (this.selectedClassTarget == ("linkparent".toLowerCase())) ? tabref.parentNode : tabref
},
urlparamselect: function(tabinterfaceid) {
var result = window.location.search.match(new RegExp(tabinterfaceid+"=(\\d+)", "i")) //check for "?tabinterfaceid=2" in URL
return (result == null) ? null : parseInt(RegExp.$1) //returns null or index, where index (int) is the selected tab's index
},
expandtab: function(tabref) {
var subcontentid = tabref.getAttribute("rel") //Get id of subcontent to expand
var associatedrevids = (tabref.getAttribute("rev")) ? ","+tabref.getAttribute("rev").replace(/\s+/, "")+"," : ""
this.expandsubcontent(subcontentid)
this.expandrevcontent(associatedrevids)
for (var i = 0; i < this.tabs.length; i++) { //Loop through all tabs, and assign only the selected tab the CSS class "selected"
this.getselectedClassTarget(this.tabs[i]).className = (this.tabs[i].getAttribute("rel") == subcontentid) ? "selected" : ""
}
if (this.enabletabpersistence) //if persistence enabled, save selected tab position(int) relative to its peers
ddtabcontent.setCookie(this.tabinterfaceid, tabref.tabposition)
this.setcurrenttabindex(tabref.tabposition) //remember position of selected tab within hottabspositions[] array
},
expandsubcontent: function(subcontentid) {
for (var i = 0; i < this.subcontentids.length; i++) {
var subcontent = document.getElementById(this.subcontentids[i]) //cache current subcontent obj (in for loop)
subcontent.style.display = (subcontent.id == subcontentid) ? "block" : "none" //"show" or hide sub content based on matching id attr value
}
},
expandrevcontent: function(associatedrevids) {
var allrevids = this.revcontentids
for (var i = 0; i < allrevids.length; i++) { //Loop through rev attributes for all tabs in this tab interface
document.getElementById(allrevids[i]).style.display = (associatedrevids.indexOf(","+allrevids[i]+",") !=-1) ? "block" : "none"
}
},
setcurrenttabindex: function(tabposition) { //store current position of tab (within hottabspositions[] array)
for (var i = 0; i < this.hottabspositions.length; i++) {
if (tabposition == this.hottabspositions[i]) {
this.currentTabIndex = i
break
}
}
},
autorun: function() { //function to auto cycle through and select tabs based on a set interval
this.cycleit('next', true)
},
cancelautorun: function() {
if (typeof this.autoruntimer != "undefined")
clearInterval(this.autoruntimer)
},
init: function(automodeperiod) {
var persistedtab = ddtabcontent.getCookie(this.tabinterfaceid) //get position of persisted tab (applicable if persistence is enabled)
var selectedtab =-1 //Currently selected tab index (-1 meaning none)
var selectedtabfromurl = this.urlparamselect(this.tabinterfaceid) //returns null or index from: tabcontent.htm?tabinterfaceid=index
this.automodeperiod = automodeperiod || 0
for (var i = 0; i < this.tabs.length; i++) {
this.tabs[i].tabposition = i //remember position of tab relative to its peers
if (this.tabs[i].getAttribute("rel")) {
var tabinstance = this
this.hottabspositions[this.hottabspositions.length] = i //store position of "hot" tab ("rel" attr defined) relative to its peers
this.subcontentids[this.subcontentids.length] = this.tabs[i].getAttribute("rel") //store id of sub content ("rel" attr value)
this.tabs[i].onclick = function() {
tabinstance.expandtab(this)
tabinstance.cancelautorun() //stop auto cycling of tabs (if running)
return false
}
if (this.tabs[i].getAttribute("rev")) { //if "rev" attr defined, store each value within "rev" as an array element
this.revcontentids = this.revcontentids.concat(this.tabs[i].getAttribute("rev").split(/\s*,\s*/))
}
if (selectedtabfromurl == i || this.enabletabpersistence && selectedtab ==-1 && parseInt(persistedtab) == i || !this.enabletabpersistence && selectedtab ==-1 && this.getselectedClassTarget(this.tabs[i]).className == "selected") {
selectedtab = i //Selected tab index, if found
}
}
} //END for loop
if (selectedtab !=-1) //if a valid default selected tab index is found
this.expandtab(this.tabs[selectedtab]) //expand selected tab (either from URL parameter, persistent feature, or class="selected" class)
else //if no valid default selected index found
this.expandtab(this.tabs[this.hottabspositions[0]]) //Just select first tab that contains a "rel" attr
if (parseInt(this.automodeperiod) > 500 && this.hottabspositions.length > 1) {
this.autoruntimer = setInterval(function() { tabinstance.autorun() }, this.automodeperiod)
}
} //END int() function
} //END Prototype assignment