"new document or drag files here" not visible

Question

Hi,
I gave "Collaboration" permission to Visitors (read only users) in a document library
sub folder.
My problem is:
users can't see the "new document or drag files here"  option, so the only way to upload a file is in the ribbon: "File" -> "Upload document"
That's confusing for the users.
Setting Collaboration on the entire doc lib will solve the issue but users will be able to add/edit/delete on the root folder.
Is there a way to see the "new document" option or avoid collaboration on the root folder?

Answer 1

I ended up creating an event handler, I think it's the only way...
So:
I've created a new permission level for visitors called "Insert" that is Read + Add Items
I've created an event receiver on the Document library that disables collaboration only inside the root folder
Here's the code:
using System;
using System.Security.Permissions;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Utilities;
using Microsoft.SharePoint.Workflow;
namespace Extranet.EventReceivers.EventReceiverAreeScambio
/// <summary>
/// List Item Events
/// </summary>
public class EventReceiverAreeScambio : SPItemEventReceiver
/// <summary>
/// An item is being added.
/// </summary>
public override void ItemAdding(SPItemEventProperties properties)
base.ItemAdding(properties);
ValidaPosizione(properties, "Non puoi aggiungere file nella cartella di base, inseriscili solo all'interno delle sotto aree.");
/// <summary>
/// An item is being deleted
/// </summary>
public override void ItemDeleting(SPItemEventProperties properties)
base.ItemDeleting(properties);
ValidaPosizione(properties, "Non puoi eliminare file in questa cartella.");
/// <summary>
/// An item is being updated
/// </summary>
public override void ItemUpdating(SPItemEventProperties properties)
base.ItemUpdating(properties);
ValidaPosizione(properties, "Non puoi modificare file in questa cartella.");
private static void ValidaPosizione(SPItemEventProperties properties, string errorMessage)
string totalpath = properties.AfterUrl;
string[] test = totalpath.Split('/');
if (test.Length < 3 && !properties.Web.CurrentUser.IsSiteAdmin)
properties.Status = SPEventReceiverStatus.CancelWithError;
properties.ErrorMessage = errorMessage;