hook_file_download

The purpose of hook_file_download is to Control access to private file downloads and specify HTTP headers. The hook_file_download_access is restrict the access to certain files based on the entity type. e.g., only users with access to a node should be allowed to download files attached to that node.

While working with a project, I need to display a view in colorbox popup. I have done the following steps for processing popup for views.