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Adding Header Check Box in Pageblock Table

I have faced some requirement in my development work . User must be able to select all the record in the page block table in one click . So I added header check-box  in page block table . 
Here is the code how I achieved this. Only Java Script code I have used .

This is the my page


<apex:page controller="ControllerforheaderCheckboxinPBT">
    <script type="text/javascript">
        
        function checkAll(cb){
            var inputElem = document.getElementsByTagName("input");
            for(var i=0; i<inputElem.length; i++){
                if(inputElem[i].id.indexOf("checkedone")!=-1)
                    inputElem[i].checked = cb.checked;
            }

        } 
     </script>
    
    <apex:pageMessages />
    <apex:form >
       <apex:pageBlock Title="ALL CONTACTS" >
            <apex:commandButton value="mass delete" action="{!massdelete}"  id="massdelete" onclick="return confirmDelete()"/>
            <apex:pageBlockTable value="{!Contacts}" width="100%" var="c" cellpadding="2" border="1"  rowClasses="odd,even" styleClass="tableClass" id="opp_table">
                <apex:column >
                    <apex:facet name="header"> 
                        <apex:inputCheckbox >
                            <apex:actionSupport event="onclick" action="{!GetSelected}" onsubmit="checkAll(this)" rerender="opp_table" status="newStatus"/>
                         </apex:inputCheckbox>
                     </apex:facet>
                    <apex:inputCheckbox value="{!c.selected}" id="checkedone">
                        <apex:actionSupport event="onclick" action="{!GetSelected}" rerender="opp_table"/>
                    </apex:inputCheckbox>
                </apex:column>
                <apex:column headervalue="AccountName" styleClass="showline">
                    <apex:outputField value="{!c.con.AccountId}" />
                </apex:column> 
            </apex:pageBlockTable>
        </apex:pageBlock>
    </apex:form>
</apex:page>

My Controller..


public with sharing class ControllerforheaderCheckboxinPBT {
     public Contact contact{get;set;}
     public Id contactId{get;set;}
     List<ContactWrapper> contactList = new List<ContactWrapper>();
     List<Contact> selectedContacts = new List<Contact>();
     public ControllerforheaderCheckboxinPBT() {
        Contact contact = new Contact();
     }    
    public  List<ContactWrapper> getContacts() {
       for(Contact c: [SELECT Id,Name,Accountid,loginURL__c,Account.Name,MobilePhone,Email FROM Contact ORDER BY createdDate DESC]){
           contactList.add(new ContactWrapper(c));
        }   
       return contactList;
    }
     public PageReference getSelected() {
         System.debug('======Inside the Get Function======');
         selectedContacts.clear();
      
         //adding contacts in list 
         for(ContactWrapper conWrapper: contactList) {
            if(conWrapper.selected == true) {
                conWrapper.isChanged = true;
                selectedContacts.add(conWrapper.con);  
            }                    
          }      
          return null;
      }
      
      public PageReference massDelete() {
          //deleting that list 
 if(selectedContacts.size()>0){
 delete selectedContacts;
 }
              
 //showing an message to select one contact
 else{
 ApexPages.addMessage(new ApexPages.message(ApexPages.severity.ERROR,'Please select at least one Contact.'));
 return null;
 }
 PageReference headerCheckboxPage = new PageReference('/apex/headerCheckboxinPBT');
 headerCheckboxPage .setRedirect(true);
 return headerCheckboxPage ;
 }
     public class ContactWrapper {
         public Contact con{get; set;}
         public Boolean selected{get; set;}
          
         public ContactWrapper(Contact c) {
            con = c;
            selected = false;
              
         }
      }
    
}

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Unknown said…
I would like to post code on this website, but existing limit of 4096 characters error is being thrown. Could you please increase the limit ?
6 May 2017 at 00:10
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