Replacing the List table of a Post Type

Question

Is there a way to replace the WP_List_Table object of a post type to display said post type differently on the Admin edit.php page?

Answer 1

No, you cannot replace the list table. There is no filter, everything is hard-coded.

But you can change the post type registration, set show_ui to FALSE to prevent the built-in page, and add a custom page for the post type listing to show the editable items.

add_action( 'wp_loaded', function(){
    register_post_type(
        'test',
        array(
            'labels' => array(
                'name' => 'TEST'
            ),
            'public' => TRUE,
            'show_ui' => FALSE
        )
    );
});

add_action( 'admin_menu', function(){
    add_object_page(
        'TEST',
        'TEST',
        'edit_test',
        'test',
        function(){
            echo 'test'; // list post type items here
        }
    );
});

Result

Answer 2

This example is applied to post post type. This is leveraging the WP_Posts_List_Table class and views-edit-{$post_type} filter. This seem isn't the best way, but it works:

Make sure the class is loaded on your page:

if(!class_exists('WP_List_Table')){
    require_once( ABSPATH . 'wp-admin/includes/class-wp-list-table.php' );
}
if(!class_exists('WP_Posts_List_Table')){
    require_once( ABSPATH . 'wp-admin/includes/class-wp-posts-list-table.php' );
}

Extend the WP_Posts_List_Table class to remove list table and define the custom content:

class wpse_CustomTable extends WP_Posts_List_Table
{       
    // remove search box
    public function search_box( $text, $input_id ){ }

    // Your custom list table is here
    public function display() {
        echo "Test";
    }
}

Use it inside a filter hook:

// hook into `views-edit`
add_filter( 'views_edit-post',  "sstssfb_custom_list_table");    
// Override the post table object
function sstssfb_custom_list_table() {
    global $wp_list_table;
    $mylisttable = new wpse_CustomTable();
    $wp_list_table = $mylisttable ;    
}

Result: