From 514caf0120d7200e6c0c972d5a0545554b0d58fd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Helen=20Hou-Sand=C3=AD?= <helen.y.hou@gmail.com>
Date: Fri, 21 Aug 2015 15:32:29 +0000
Subject: [PATCH] List tables: Allow filtering of hidden and default hidden
 columns.

Similar to `get_hidden_meta_boxes()`, there are now filters named `default_hidden_columns` and `hidden_columns`.

props Compute, MikeHansenMe, chriscct7.
fixes #32499.

Built from https://develop.svn.wordpress.org/trunk@33689


git-svn-id: http://core.svn.wordpress.org/trunk@33656 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-admin/includes/screen.php | 29 +++++++++++++++++++++++++++--
 wp-includes/version.php      |  2 +-
 2 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/wp-admin/includes/screen.php b/wp-admin/includes/screen.php
index fba5dc9da0..d23cff36a3 100644
--- a/wp-admin/includes/screen.php
+++ b/wp-admin/includes/screen.php
@@ -51,10 +51,35 @@ function get_column_headers( $screen ) {
  * @return array
  */
 function get_hidden_columns( $screen ) {
-	if ( is_string( $screen ) )
+	if ( is_string( $screen ) ) {
 		$screen = convert_to_screen( $screen );
+	}
 
-	return (array) get_user_option( 'manage' . $screen->id . 'columnshidden' );
+	$hidden = get_user_option( 'manage' . $screen->id . 'columnshidden' );
+
+	if ( ! $hidden ) {
+		$hidden = array();
+
+		/**
+		 * Filter the default list of hidden columns.
+		 *
+		 * @since 4.4.0
+		 *
+		 * @param array     $hidden An array of columns hidden by default.
+		 * @param WP_Screen $screen WP_Screen object of the current screen.
+		 */
+		$hidden = apply_filters( 'default_hidden_columns', $hidden, $screen );
+	}
+
+	/**
+	 * Filter the list of hidden columns.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @param array     $hidden An array of hidden columns.
+	 * @param WP_Screen $screen WP_Screen object of the current screen.
+	 */
+	return apply_filters( 'hidden_columns', $hidden, $screen );
 }
 
 /**
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 3f8b619174..c4311c15d6 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-alpha-33688';
+$wp_version = '4.4-alpha-33689';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.