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screen.php tidying. Doc fixes and improvements. Improve logic in ::show_screen_options(). Remove regex in ::set_parentage(). Better variable names. Streamline get_screen_icon(). Whitespace. see #18785. 

git-svn-id: http://svn.automattic.com/wordpress/trunk@19051 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
nacin 2011-10-24 06:40:15 +00:00
parent a4a58839d0
commit 29f6c203cd
1 changed files with 67 additions and 56 deletions
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121
wp-admin/includes/screen.php
View File

@ -11,7 +11,7 @@
*
* @since 2.7.0
*
* @param string|object $screen The screen you want the headers for
* @param string|WP_Screen $screen The screen you want the headers for
* @return array Containing the headers in the format id => UI String
*/
function get_column_headers( $screen ) {
@ -31,7 +31,7 @@ function get_column_headers( $screen ) {
*
* @since 2.7.0
*
* @param string|object $screen The screen you want the hidden columns for
* @param string|WP_Screen $screen The screen you want the hidden columns for
* @return array
*/
function get_hidden_columns( $screen ) {
@ -42,17 +42,17 @@ function get_hidden_columns( $screen ) {
}
/**
* {@internal Missing Short Description}}
* Prints the meta box preferences for screen meta.
*
* @since 2.7.0
*
* @param unknown_type $screen
* @param string|WP_Screen $screen
*/
function meta_box_prefs( $screen ) {
global $wp_meta_boxes;
if ( is_string($screen) )
$screen = convert_to_screen($screen);
if ( is_string( $screen ) )
$screen = convert_to_screen( $screen );
if ( empty($wp_meta_boxes[$screen->id]) )
return;
@ -81,7 +81,7 @@ function meta_box_prefs( $screen ) {
*
* @since 2.7.0
*
* @param string|object $screen Screen identifier
* @param string|WP_Screen $screen Screen identifier
* @return array Hidden Meta Boxes
*/
function get_hidden_meta_boxes( $screen ) {
@ -112,11 +112,11 @@ function get_hidden_meta_boxes( $screen ) {
*
* @since 3.0.0
*
* @param string $screen The name of the screen
* @param string $hook_name The hook name (also known as the hook suffix) used to determine the screen.
* @return object An object containing the safe screen name and id
*/
function convert_to_screen( $screen ) {
$screen = str_replace( array('.php', '-new', '-add', '-network', '-user' ), '', $screen);
function convert_to_screen( $hook_suffix ) {
$screen = str_replace( array('.php', '-new', '-add', '-network', '-user' ), '', $hook_suffix);
if ( is_network_admin() )
$screen .= '-network';
@ -144,7 +144,7 @@ function add_contextual_help( $screen, $help ) {
if ( is_string( $screen ) )
$screen = convert_to_screen( $screen );
WP_Screen::add_old_compat_help( $screen->id, $help );
WP_Screen::add_old_compat_help( $screen, $help );
}
/**
@ -165,52 +165,63 @@ function add_screen_option( $option, $args = array() ) {
return $current_screen->add_option( $option, $args );
}
/**
* Displays a screen icon.
*
* @uses get_screen_icon()
* @since 2.7.0
*
* @param string|WP_Screen $screen Optional. Accepts a screen object (and defaults to the current screen object)
* which it uses to determine an icon HTML ID. Or, if a string is provided, it is used to form the icon HTML ID.
*/
function screen_icon( $screen = '' ) {
echo get_screen_icon( $screen );
}
/**
* Gets a screen icon.
*
* @since 3.2.0
*
* @param string|WP_Screen $screen Optional. Accepts a screen object (and defaults to the current screen object)
* which it uses to determine an icon HTML ID. Or, if a string is provided, it is used to form the icon HTML ID.
* @return string HTML for the screen icon.
*/
function get_screen_icon( $screen = '' ) {
global $current_screen, $typenow;
if ( empty($screen) )
$screen = $current_screen;
elseif ( is_string($screen) )
$name = $screen;
if ( empty( $screen ) )
$screen = get_current_screen();
elseif ( is_string( $screen ) )
$icon_id = $screen;
$class = 'icon32';
if ( empty($name) ) {
if ( !empty($screen->parent_base) )
$name = $screen->parent_base;
if ( empty( $icon_id ) ) {
if ( ! empty( $screen->parent_base ) )
$icon_id = $screen->parent_base;
else
$name = $screen->base;
$icon_id = $screen->base;
if ( 'edit' == $name && isset($screen->post_type) && 'page' == $screen->post_type )
$name = 'edit-pages';
if ( ! empty( $screen->post_type ) && 'page' == $screen->post_type )
$icon_id = 'edit-pages';
$post_type = '';
if ( isset( $screen->post_type ) )
$post_type = $screen->post_type;
elseif ( $current_screen == $screen )
$post_type = $typenow;
if ( $post_type )
$class .= ' ' . sanitize_html_class( 'icon32-posts-' . $post_type );
if ( ! empty( $screen->post_type ) )
$class .= ' ' . sanitize_html_class( 'icon32-posts-' . $screen->post_type );
}
return '<div id="icon-' . esc_attr( $name ) . '" class="' . $class . '"><br /></div>';
return '<div id="icon-' . esc_attr( $icon_id ) . '" class="' . $class . '"><br /></div>';
}
/**
* Get the current screen object
* Get the current screen object
*
* @since 3.1.0
* @since 3.1.0
*
* @return object Current screen object
*/
function get_current_screen() {
global $current_screen;
if ( !isset($current_screen) )
if ( ! isset( $current_screen ) )
return null;
return $current_screen;
@ -220,28 +231,27 @@ function get_current_screen() {
* Set the current screen object
*
* @since 3.0.0
*
* @uses $current_screen
*
* @param string $id Screen id, optional.
* @param string $hook_name Optional. The hook name (also known as the hook suffix) used to determine the screen.
*/
function set_current_screen( $id = '' ) {
function set_current_screen( $hook_name = '' ) {
global $current_screen;
$current_screen = new WP_Screen( $id );
$current_screen = new WP_Screen( $hook_name );
$current_screen = apply_filters('current_screen', $current_screen);
}
/**
* A class representing the current admin screen.
* A class representing the admin screen.
*
* @since 3.3.0
* @access public
*/
final class WP_Screen {
/**
* Any action associated with the screen. 'add' for *-add.php and *-new.php screens. Empty otherwise.
* Any action associated with the screen. 'add' for *-add.php and *-new.php screens. Empty otherwise.
*
* @since 3.3.0
* @var string
@ -453,8 +463,18 @@ final class WP_Screen {
self::$_options[ $this->id ] = array();
}
/**
* Sets the old string-based contextual help for the screen.
*
* For backwards compatibility.
*
* @since 3.3.0
*
* @param WP_Screen $screen A screen object.
* @param string $help Help text.
*/
static function add_old_compat_help( $screen, $help ) {
self::$_old_compat_help[ $screen ] = $help;
self::$_old_compat_help[ $screen->id ] = $help;
}
/**
@ -467,8 +487,8 @@ final class WP_Screen {
*/
function set_parentage( $parent_file ) {
$this->parent_file = $parent_file;
$this->parent_base = preg_replace('/\?.*$/', '', $parent_file);
$this->parent_base = str_replace('.php', '', $this->parent_base);
list( $this->parent_base ) = explode( '?', $parent_file );
$this->parent_base = str_replace( '.php', '', $this->parent_base );
}
/**
@ -640,33 +660,24 @@ final class WP_Screen {
}
public function show_screen_options() {
global $wp_meta_boxes, $wp_list_table;
global $wp_meta_boxes;
if ( is_bool( $this->_show_screen_options ) )
return $this->_show_screen_options;
$columns = get_column_headers( $this );
$show_screen = false;
if ( ! empty( $wp_meta_boxes[ $this->id ] ) || ! empty( $columns ) )
$show_screen = true;
// Check if there are per-page options.
$show_screen = $show_screen || $this->get_option('per_page');
$show_screen = ! empty( $wp_meta_boxes[ $this->id ] ) || $columns || $this->get_option( 'per_page' );
$this->_screen_settings = apply_filters( 'screen_settings', '', $this );
switch ( $this->id ) {
case 'widgets':
$this->_screen_settings = '<p><a id="access-on" href="widgets.php?widgets-access=on">' . __('Enable accessibility mode') . '</a><a id="access-off" href="widgets.php?widgets-access=off">' . __('Disable accessibility mode') . "</a></p>\n";
$show_screen = true;
break;
}
if ( ! empty( $this->_screen_settings ) )
$show_screen = true;
if ( ! empty( self::$_options[ $this->id ] ) )
if ( $this->_screen_settings || self::$_options[ $this->id ] )
$show_screen = true;
$this->_show_screen_options = apply_filters( 'screen_options_show_screen', $show_screen, $this );