I'm trying to create a component that shows related activity on the account page. But it's only showing the last object. Any ideas on how to fix this? Also is there a way to add the chatter feed?


public with sharing class CaseActivityController {
    
    public List<Task> lstTask {get;set;}
    
    public CaseActivityController(ApexPages.StandardController std) 
    {
        Id AccountId = std.getId(); //Get AccountId
        
        //Query on Case
        Map<Id, Case> mapIdToCase = new Map<Id,Case>([Select Id from Case where AccountId =: AccountId]);
        
        //Query on Case Activity 
        lstTask = new List<Task>([SELECT CallType,Status,Subject,WhatId,ActivityDate,Description FROM Task WHERE WhatId IN: mapIdToCase.keyset() ORDER BY ActivityDate]);
        
        //Query on Contact
        Map<Id, Contact> mapIdToContact = new Map<Id,Contact>([Select Id from Contact where AccountId =: AccountId]);
        
        //Query on Contact Activity 
        2ndTask = new List<Task>([SELECT CallType,Status,Subject,WhatId,ActivityDate,Description FROM Task WHERE WhatId IN: mapIdToContact.keyset() ORDER BY ActivityDate]);
         
        //Query on Opportunity
        Map<Id, Opportunity> mapIdToOpportunity = new Map<Id,Opportunity>([Select Id from Opportunity where AccountId =: AccountId]);
        
        //Query on Opportunity Activity 
        3rdTask = new List<Task>([SELECT CallType,Status,Subject,WhatId,ActivityDate,Description FROM Task WHERE WhatId IN: mapIdToOpportunity.keyset() ORDER BY ActivityDate]);
    }
}