<aura:component controller="SimplyfyFilesCntrl" implements="force:appHostable,flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId,forceCommunity:availableForAllPageTypes,force:lightningQuickAction" access="global" >  
   <aura:handler name="init" value="{!this}" action="{!c.doInit}"/>  
   <aura:attribute name="files" type="ContentDocument[]"/>  
   <aura:attribute name="recordId" type="string"/>  
   <aura:attribute name="accept" type="List" default="['.jpg', '.jpeg','.pdf','.csv','.xlsx']"/>  
   <aura:attribute name="multiple" type="Boolean" default="true"/>  
   <aura:attribute name="disabled" type="Boolean" default="false"/>  
   <div class="slds">  
     <div style="border-left: 1px solid rgb(221, 219, 218);  
           border-right: 1px solid rgb(221, 219, 218);  
           border-bottom: 1px solid rgb(221, 219, 218);  
           border-top: 1px solid rgb(221, 219, 218);">  
       <div class="slds-page-header" style="border-radius: 0px; border-right: 0px;border-left: 0px;border-top: 0px;  
                          box-shadow: 0 0px 0px 0 rgba(0, 0, 0, 0.1);">  
         Files  
       </div>  
       <div class="slds-grid">  
         <div class="slds-col slds-size--5-of-12">  
           <lightning:input type="text" name="input1" label="Enter File Name" aura:id="fileName" />  
         </div>&nbsp; &nbsp;  
         <div class="slds-col slds-size---of-12">  
           <lightning:fileUpload label="" multiple="{!v.multiple}"   
                      accept="{!v.accept}" recordId="{!v.recordId}"   
                      onuploadfinished="{!c.UploadFinished}" />  
         </div>  
       </div><br/>  
       <table class="slds-table slds-table--bordered">  
         <thead>  
           <tr>  
             <th>Title</th>  
             <th>FileType</th>  
             <th>Description</th>  
           </tr>  
         </thead>  
         <tbody>  
           <aura:iteration items="{!v.files}" var="f">  
             <tr>  
               <td> <a href="" id="{!f.Id}" onclick="{!c.OpenFile}">{!f.Title}</a></td>  
               <td>{!f.FileType}</td>  
               <td>{!f.Description}</td>  
             </tr>  
           </aura:iteration>  
         </tbody>  
       </table>  
     </div>  
   </div>  
 </aura:component>

({  
   doInit:function(component,event,helper){  
     var action = component.get("c.getFiles");  
     action.setParams({  
       "recordId":component.get("v.recordId")  
     });      
     action.setCallback(this,function(response){  
       var state = response.getState();  
       if(state=='SUCCESS'){  
         var result = response.getReturnValue();  
         console.log('result: ' +result);  
         component.set("v.files",result);  
       }  
     });  
     $A.enqueueAction(action);  
   } ,  
   //Open File onclick event  
   OpenFile :function(component,event,helper){  
     var rec_id = event.currentTarget.id;  
     $A.get('e.lightning:openFiles').fire({ //Lightning Openfiles event  
       recordIds: [rec_id] //file id  
     });  
   },  
   UploadFinished : function(component, event, helper) {  
     var uploadedFiles = event.getParam("files");  
     var documentId = uploadedFiles[0].documentId;  
     var fileName = uploadedFiles[0].name;  
     helper.UpdateDocument(component,event,documentId);  
     var toastEvent = $A.get("e.force:showToast");  
     toastEvent.setParams({  
       "title": "Success!",  
       "message": "File "+fileName+" Uploaded successfully."  
     });  
     toastEvent.fire();  
     /* Open File after upload  
     $A.get('e.lightning:openFiles').fire({  
       recordIds: [documentId]  
     });*/  
   },  
 })

({  
       UpdateDocument : function(component,event,Id) {  
     var action = component.get("c.UpdateFiles");  
     var fName = component.find("fileName").get("v.value");  
     //alert('File Name'+fName);  
     action.setParams({"documentId":Id,  
              "title": fName,  
              "recordId": component.get("v.recordId")  
              });  
     action.setCallback(this,function(response){  
       var state = response.getState();  
       if(state=='SUCCESS'){  
         var result = response.getReturnValue();  
         console.log('Result Returned: ' +result);  
         component.find("fileName").set("v.value", " ");  
         component.set("v.files",result);  
       }  
     });  
     $A.enqueueAction(action);  
   },  
 })

public class SimplyfyFilesCntrl {  
   @AuraEnabled  
   public static List<ContentDocument> getFiles(string recordId){  
     List<ContentDocument> DocumentList = new List<ContentDocument>();  
     Set<Id> documentIds = new Set<Id>();  //store file ids
     List<ContentDocumentLink> cdl=[select id,LinkedEntityId,ContentDocumentId from ContentDocumentLink where LinkedEntityId=:recordId];  
     for(ContentDocumentLink cdLink:cdl){  
       documentIds.add(cdLink.ContentDocumentId);  // Document ids
     }      
     DocumentList = [select Id,Title,FileType,ContentSize,Description from ContentDocument where id IN: documentIds];  
     return DocumentList;  
   }  
   @AuraEnabled  
   public static List<ContentDocument> UpdateFiles(string documentId,string title,string recordId){  
     system.debug('title: ' +title);  
     ContentDocument cd = [select id,title from ContentDocument where Id=:documentId]; // Getting files from Parent record 
     cd.Title = title;  // Changing file Title with user entered title
     try{  
       update cd;  // Update ContentDocument (File)
     }  
     catch(DMLException e){  
       system.debug('Exception has occurred! ' +e.getMessage());  
     }  
      List<ContentDocument> DocumentList = new List<ContentDocument>();  
     Set<Id> documentIds = new Set<Id>();  
     List<ContentDocumentLink> cdl=[select id,LinkedEntityId,ContentDocumentId from ContentDocumentLink where LinkedEntityId=:recordId];  
     for(ContentDocumentLink cdLink:cdl){  
       documentIds.add(cdLink.ContentDocumentId);  
     }      
     DocumentList = [select Id,Title,FileType,ContentSize,Description from ContentDocument where id IN: documentIds];  
     return DocumentList;  // Return list of files on parent record
   }  
 }