<?php

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/**

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* WordPress Administration Screen API.

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*

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* @package WordPress

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* @subpackage Administration

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*/

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/**

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* Get the column headers for a screen

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*

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* @since 2.7.0

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*

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* @param string|WP_Screen $screen The screen you want the headers for

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* @return string[] The column header labels keyed by column ID.

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*/

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function get_column_headers( $screen ) {

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if ( is_string( $screen ) ) {

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$screen = convert_to_screen( $screen );

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}

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static $column_headers = array();

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if ( ! isset( $column_headers[ $screen->id ] ) ) {

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/**

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* Filters the column headers for a list table on a specific screen.

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*

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* The dynamic portion of the hook name, `$screen->id`, refers to the

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* ID of a specific screen. For example, the screen ID for the Posts

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* list table is edit-post, so the filter for that screen would be

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* manage_edit-post_columns.

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*

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* @since 3.0.0

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*

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* @param string[] $columns The column header labels keyed by column ID.

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*/

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$column_headers[ $screen->id ] = apply_filters( "manage_{$screen->id}_columns", array() );

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}

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return $column_headers[ $screen->id ];

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}

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/**

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* Get a list of hidden columns.

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*

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* @since 2.7.0

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*

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* @param string|WP_Screen $screen The screen you want the hidden columns for

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* @return string[] Array of IDs of hidden columns.

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*/

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function get_hidden_columns( $screen ) {

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if ( is_string( $screen ) ) {

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$screen = convert_to_screen( $screen );

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}

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$hidden = get_user_option( 'manage' . $screen->id . 'columnshidden' );

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$use_defaults = ! is_array( $hidden );

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if ( $use_defaults ) {

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$hidden = array();

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/**

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* Filters the default list of hidden columns.

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*

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* @since 4.4.0

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*

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* @param string[] $hidden Array of IDs of columns hidden by default.

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* @param WP_Screen $screen WP_Screen object of the current screen.

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*/

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$hidden = apply_filters( 'default_hidden_columns', $hidden, $screen );

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}

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/**

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* Filters the list of hidden columns.

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*

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* @since 4.4.0

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* @since 4.4.1 Added the `use_defaults` parameter.

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*

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* @param string[] $hidden Array of IDs of hidden columns.

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* @param WP_Screen $screen WP_Screen object of the current screen.

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* @param bool $use_defaults Whether to show the default columns.

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*/

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return apply_filters( 'hidden_columns', $hidden, $screen, $use_defaults );

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}

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/**

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* Prints the meta box preferences for screen meta.

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*

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* @since 2.7.0

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*

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* @global array $wp_meta_boxes

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*

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* @param WP_Screen $screen

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*/

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function meta_box_prefs( $screen ) {

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global $wp_meta_boxes;

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if ( is_string( $screen ) ) {

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$screen = convert_to_screen( $screen );

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}

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if ( empty( $wp_meta_boxes[ $screen->id ] ) ) {

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return;

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}

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$hidden = get_hidden_meta_boxes( $screen );

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foreach ( array_keys( $wp_meta_boxes[ $screen->id ] ) as $context ) {

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foreach ( array( 'high', 'core', 'default', 'low' ) as $priority ) {

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if ( ! isset( $wp_meta_boxes[ $screen->id ][ $context ][ $priority ] ) ) {

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continue;

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}

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foreach ( $wp_meta_boxes[ $screen->id ][ $context ][ $priority ] as $box ) {

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if ( false == $box || ! $box['title'] ) {

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continue;

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}

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// Submit box cannot be hidden.

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if ( 'submitdiv' === $box['id'] || 'linksubmitdiv' === $box['id'] ) {

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continue;

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}

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$widget_title = $box['title'];

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if ( is_array( $box['args'] ) && isset( $box['args']['__widget_basename'] ) ) {

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$widget_title = $box['args']['__widget_basename'];

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}

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$is_hidden = in_array( $box['id'], $hidden, true );

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printf(

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'<label for="%1$s-hide"><input class="hide-postbox-tog" name="%1$s-hide" type="checkbox" id="%1$s-hide" value="%1$s" %2$s />%3$s</label>',

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esc_attr( $box['id'] ),

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checked( $is_hidden, false, false ),

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$widget_title

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);

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}

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}

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}

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}

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/**

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* Gets an array of IDs of hidden meta boxes.

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*

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* @since 2.7.0

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*

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* @param string|WP_Screen $screen Screen identifier

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* @return string[] IDs of hidden meta boxes.

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*/

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function get_hidden_meta_boxes( $screen ) {

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if ( is_string( $screen ) ) {

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$screen = convert_to_screen( $screen );

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}

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$hidden = get_user_option( "metaboxhidden_{$screen->id}" );

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$use_defaults = ! is_array( $hidden );

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// Hide slug boxes by default.

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if ( $use_defaults ) {

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$hidden = array();

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if ( 'post' === $screen->base ) {

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if ( in_array( $screen->post_type, array( 'post', 'page', 'attachment' ), true ) ) {

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$hidden = array( 'slugdiv', 'trackbacksdiv', 'postcustom', 'postexcerpt', 'commentstatusdiv', 'commentsdiv', 'authordiv', 'revisionsdiv' );

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} else {

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$hidden = array( 'slugdiv' );

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}

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}

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/**

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* Filters the default list of hidden meta boxes.

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*

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* @since 3.1.0

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*

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* @param string[] $hidden An array of IDs of meta boxes hidden by default.

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* @param WP_Screen $screen WP_Screen object of the current screen.

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*/

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$hidden = apply_filters( 'default_hidden_meta_boxes', $hidden, $screen );

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}

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/**

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* Filters the list of hidden meta boxes.

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*

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* @since 3.3.0

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*

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* @param string[] $hidden An array of IDs of hidden meta boxes.

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* @param WP_Screen $screen WP_Screen object of the current screen.

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* @param bool $use_defaults Whether to show the default meta boxes.

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* Default true.

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*/

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return apply_filters( 'hidden_meta_boxes', $hidden, $screen, $use_defaults );

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}

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/**

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* Register and configure an admin screen option

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*

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* @since 3.1.0

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*

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* @param string $option An option name.

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* @param mixed $args Option-dependent arguments.

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*/

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function add_screen_option( $option, $args = array() ) {

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$current_screen = get_current_screen();

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if ( ! $current_screen ) {

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return;

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}

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$current_screen->add_option( $option, $args );

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}

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/**

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* Get the current screen object

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*

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* @since 3.1.0

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*

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* @global WP_Screen $current_screen WordPress current screen object.

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*

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* @return WP_Screen|null Current screen object or null when screen not defined.

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*/

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function get_current_screen() {

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global $current_screen;

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if ( ! isset( $current_screen ) ) {

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return null;

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}

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return $current_screen;

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}

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/**

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* Set the current screen object

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*

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* @since 3.0.0

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*

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* @param string|WP_Screen $hook_name Optional. The hook name (also known as the hook suffix) used to determine the screen,

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* or an existing screen object.

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*/

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function set_current_screen( $hook_name = '' ) {

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WP_Screen::get( $hook_name )->set_current_screen();

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}

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