Hi every body, 
I'm trying to do an apex class and VF page to explore folders and files from google drive. I need help, I make this code the only think I have it'just and redirection page to google drive.

public class MyClass {
private String code;

public boolean val {
    get;
    set;
    }

public blob file {
    get;
    set;
    }

public String filetype {
    get;
    set;
    }
   
public String filename {
    get;
    set;
    }

public Id ContactId=ApexPages.currentPage().getParameters().get('Id');


public sharingClass() {

 }

public PageReference explor() {
//refreshtoken ='GDriveAPI/drive/v3/files/';

//Getting access token from google
HttpRequest req = new HttpRequest();
req.setMethod('POST');
req.setEndpoint('https://www.googleapis.com/oauth2/v4/token');
req.setHeader('content-type', 'application/x-www-form-urlencoded');
req.setTimeout(60 * 1000);
Http h = new Http();
String resp;
HttpResponse res = h.send(req);
resp = res.getBody();
 
System.debug(ContactId);
String boundary = '----------9889464542212';
String delimiter = '\r\n--' + boundary + '\r\n';
String close_delim = '\r\n--' + boundary + '--';

//PageReference returnPage = new PageReference('/lightning/r/Contact/'+ContactId+'/view?0.source=alohaHeader');  
PageReference returnPage = new PageReference('https://drive.google.com/drive/');
return returnPage;
    }
      
    public static void basicAuthCallout(){
     HttpRequest req = new HttpRequest();
     req.setEndpoint('callout:GDriveAPI/drive/v3/files/');
     req.setMethod('GET');
     
     // Specify the required user name and password to access the endpoint
     // As well as the header and header information
 
     String username = '';
     String password = '';
  
     Blob headerValue = Blob.valueOf(username + ':' + password);
     String authorizationHeader = 'Basic ' +
     EncodingUtil.base64Encode(headerValue);
     req.setHeader('Authorization', authorizationHeader);
   
     // Create a new http object to send the request object
     // A response object is generated as a result of the request  
  
     Http http = new Http();
     HTTPResponse res = http.send(req);
     System.debug(res.getBody());
  }
    
}

My Visualforce page, see bellow

<apex:page controller="MyClass" showQuickActionVfHeader="true">

<apex:slds />

<apex:form style="margin-top:5%;margin-left:5%;width:60%">
<apex:pageblock >

<br/>
<br/>
<br/>
<br/>
<apex:inputfile value="{!file}" contentType="{!filetype}" filename="{!filename}" />
<br/>
<br/>
<br/>
<br/>
<apex:commandButton styleClass="myClass" onclick="this.value = 'Drives Folders'" value="Drives Folders" action="{!explor}" />
<br/>
<br/>
<apex:messages styleClass="error" />
<br/>

</apex:pageblock>
    <apex:pageblock >
        <!--Folder="{!basicAuthCallout}"-->
    </apex:pageblock>
</apex:form>
</apex:page>

The result is 
When I click on "Drives folder" It's show the google drive page. But what I want is to show a window like this

In fact a window like where we can a files or folders,
thanks in advanace