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Theme Customizer: Preview the target theme during save to ensure all settings are properly registered. Temporarily revert to the active theme when running switch_theme. fixes #20508, see #19910. 

Introduces WP_Customize->start_previewing_theme() and WP_Customize->stop_previewing_theme() to easily enable/disable the theme filters as needed.


git-svn-id: http://svn.automattic.com/wordpress/trunk@20584 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
koopersmith 2012-04-25 15:44:06 +00:00
parent 58050466eb
commit f9ac486930
1 changed files with 60 additions and 33 deletions
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93
wp-includes/class-wp-customize.php
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@ -27,7 +27,7 @@ final class WP_Customize {
require( ABSPATH . WPINC . '/class-wp-customize-section.php' );
require( ABSPATH . WPINC . '/class-wp-customize-control.php' );
add_action( 'setup_theme', array( $this, 'customize_previewing' ) );
add_action( 'setup_theme', array( $this, 'setup_theme' ) );
add_action( 'admin_init', array( $this, 'admin_init' ) );
add_action( 'wp_loaded', array( $this, 'wp_loaded' ) );
@ -61,19 +61,38 @@ final class WP_Customize {
*
* @since 3.4.0
*/
public function customize_previewing() {
public function setup_theme() {
if ( ! isset( $_REQUEST['customize'] ) || 'on' != $_REQUEST['customize'] )
return;
if ( ! $this->set_theme() || isset( $_REQUEST['save_customize_controls'] ) )
$this->start_previewing_theme();
show_admin_bar( false );
}
/**
* Start previewing the selected theme.
*
* Adds filters to change the current theme.
*
* @since 3.4.0
*/
public function start_previewing_theme() {
if ( $this->is_preview() || false === $this->theme || ( $this->theme && ! $this->theme->exists() ) )
return;
$this->previewing = true;
show_admin_bar( false );
// Initialize $theme and $original_stylesheet if they do not yet exist.
if ( ! isset( $this->theme ) ) {
$this->theme = wp_get_theme( $_REQUEST['theme'] );
if ( ! $this->theme->exists() ) {
$this->theme = false;
return;
}
}
$this->original_stylesheet = get_stylesheet();
$this->previewing = true;
add_filter( 'template', array( $this, 'get_template' ) );
add_filter( 'stylesheet', array( $this, 'get_stylesheet' ) );
add_filter( 'pre_option_current_theme', array( $this, 'current_theme' ) );
@ -86,7 +105,35 @@ final class WP_Customize {
add_filter( 'pre_option_stylesheet_root', array( $this, 'get_stylesheet_root' ) );
add_filter( 'pre_option_template_root', array( $this, 'get_template_root' ) );
do_action( 'customize_previewing' );
do_action( 'start_previewing_theme' );
}
/**
* Stop previewing the selected theme.
*
* Removes filters to change the current theme.
*
* @since 3.4.0
*/
public function stop_previewing_theme() {
if ( ! $this->is_preview() )
return;
$this->previewing = false;
remove_filter( 'template', array( $this, 'get_template' ) );
remove_filter( 'stylesheet', array( $this, 'get_stylesheet' ) );
remove_filter( 'pre_option_current_theme', array( $this, 'current_theme' ) );
// @link: http://core.trac.wordpress.org/ticket/20027
remove_filter( 'pre_option_stylesheet', array( $this, 'get_stylesheet' ) );
remove_filter( 'pre_option_template', array( $this, 'get_template' ) );
// Handle custom theme roots.
remove_filter( 'pre_option_stylesheet_root', array( $this, 'get_stylesheet_root' ) );
remove_filter( 'pre_option_template_root', array( $this, 'get_template_root' ) );
do_action( 'stop_previewing_theme' );
}
/**
@ -159,24 +206,6 @@ final class WP_Customize {
return (bool) $this->previewing;
}
/**
* Set the stylesheet name of the previewed theme.
*
* @since 3.4.0
*
* @return bool|string Stylesheet name.
*/
public function set_theme() {
if ( isset( $this->theme ) )
return $this->theme;
$this->theme = wp_get_theme( $_REQUEST['theme'] );
if ( ! $this->theme->exists() )
$this->theme = false;
return $this->theme;
}
/**
* Retrieve the template name of the previewed theme.
*
@ -267,23 +296,21 @@ final class WP_Customize {
* @since 3.4.0
*/
public function save() {
if ( $this->is_preview() )
if ( ! $this->is_preview() )
return;
check_admin_referer( 'customize_controls' );
if ( ! $this->set_theme() )
return;
$active_template = get_template();
$active_stylesheet = get_stylesheet();
// Do we have to switch themes?
if ( $this->get_template() != $active_template || $this->get_stylesheet() != $active_stylesheet ) {
if ( $this->get_stylesheet() != $this->original_stylesheet ) {
if ( ! current_user_can( 'switch_themes' ) )
return;
// Temporarily stop previewing the theme to allow switch_themes()
// to operate properly.
$this->stop_previewing_theme();
switch_theme( $this->get_template(), $this->get_stylesheet() );
$this->start_previewing_theme();
}
do_action( 'customize_save' );