Hi all,

I'm pretty new to VF and have been trying to find the right mix of docs to solve my problem, but so far no luck. 

I have a VF page with apex:tabPanels for different related lists of my custom object. 

Unfortunately, when I navigate away from the page and come back, the default apex:tab is what is always displayed. Instead, I would like to display the last apex:tab that I was looking at.

Currently, the VF editor gives me the error:

Error: Unknown property 'SFDC_Project__cStandardController.ControlTabs'

VF Page

<apex:page standardController="SFDC_Project__c" extensions="ControlTabs" showheader="true" sidebar="true"">

<apex:form>
<apex:actionFunction name="setFocus" action="{!TabInFocus}"/>
</apex:form>

<apex:tabPanel width="90%" switchType="client" headerSpacing="5" value="{!TabInFocus}">
<apex:tab label="Project Milestones" id="pjMilestones">
tab 1
</apex:tab>
<apex:tab label="Team Members" id="tmTab">
tab 2
</apex:tab>
<apex:messages />
</apex:tabPanel>

</apex:page>

Controller extension:

public class ControlTabs {
// Get the value for the tab name from the URL. Name is "tab"
String TabInFocus = System.currentPageReference().getParameters().get('tab');
// Constructor
public ControlTabs(ApexPages.StandardController stdController) {
System.debug('Current Selected tab is :' + TabInFocus);
}

public String getTabInFocus() {
System.debug(' *****Current Selected tab is :' + TabInFocus);
return TabInFocus;
}

public void setTabInFocus( String s ) {
System.currentPageReference().getParameters().put('tab',s);
this.TabInFocus = s;
}


}

Ultimately, I want to be able to track the last tab I looked at and call it up when I view the page. 

I was thinking that I could set the TabInFocus on a onTabEnter or onclick event; hence the apex:actionFunction. 

I found some posts
that lead me to believe I could get/set the id. However, I think I'm
getting stuck in properly extending the standardController class for my
object. 

Any and all help would be much appreciated!