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Widgets: Improved sidebar mapping on theme switch 

Builds on efforts brought forward in #17979.

This will send sidebars through three levels of mapping:

1. If both themes have only one sidebar, that gets mapped.
2. If both themes have sidebars with the same slug, they get mapped.
3. Sidebars that (even partially) match slugs from a similar kind of sidebar will get mapped.

Finally, if the theme has previously been active and we have a record of its 
sidebar configuration then, any unmapped sidebar will be restored to its 
previous state.

Props westonruter, obenland, alexvorn2, timmydcrawford.
See #39693.


Built from https://develop.svn.wordpress.org/trunk@41555


git-svn-id: http://core.svn.wordpress.org/trunk@41388 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Konstantin Obenland 2017-09-21 18:46:46 +00:00
parent 76296ef657
commit 27536e99c5
3 changed files with 233 additions and 81 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
wp-includes/theme.php
View File

@ -681,13 +681,16 @@ function switch_theme( $stylesheet ) {
$_sidebars_widgets = null;
if ( 'wp_ajax_customize_save' === current_action() ) {
$_sidebars_widgets = $wp_customize->post_value( $wp_customize->get_setting( 'old_sidebars_widgets_data' ) );
$old_sidebars_widgets_data_setting = $wp_customize->get_setting( 'old_sidebars_widgets_data' );
if ( $old_sidebars_widgets_data_setting ) {
$_sidebars_widgets = $wp_customize->post_value( $old_sidebars_widgets_data_setting );
}
} elseif ( is_array( $sidebars_widgets ) ) {
$_sidebars_widgets = $sidebars_widgets;
}
if ( is_array( $_sidebars_widgets ) ) {
set_theme_mod( 'sidebars_widgets', array( 'time' => time(), 'data' => $_sidebars_widgets ) );
set_theme_mod( 'sidebars_widgets', $_sidebars_widgets );
}
$nav_menu_locations = get_theme_mod( 'nav_menu_locations' );

2
wp-includes/version.php
View File

@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '4.9-alpha-41554';
$wp_version = '4.9-alpha-41555';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.

305
wp-includes/widgets.php
View File

@ -919,11 +919,19 @@ function wp_get_sidebars_widgets( $deprecated = true ) {
* @since 2.2.0
* @access private
*
* @global array $_wp_sidebars_widgets
* @param array $sidebars_widgets Sidebar widgets and their settings.
*/
function wp_set_sidebars_widgets( $sidebars_widgets ) {
if ( !isset( $sidebars_widgets['array_version'] ) )
global $_wp_sidebars_widgets;
// Clear cached value used in wp_get_sidebars_widgets().
$_wp_sidebars_widgets = null;
if ( ! isset( $sidebars_widgets['array_version'] ) ) {
$sidebars_widgets['array_version'] = 3;
}
update_option( 'sidebars_widgets', $sidebars_widgets );
}
@ -1113,107 +1121,248 @@ function _wp_sidebars_changed() {
*
* @param string|bool $theme_changed Whether the theme was changed as a boolean. A value
* of 'customize' defers updates for the Customizer.
* @return array|void
* @return array Updated sidebars widgets.
*/
function retrieve_widgets( $theme_changed = false ) {
global $wp_registered_sidebars, $sidebars_widgets, $wp_registered_widgets;
$registered_sidebar_keys = array_keys( $wp_registered_sidebars );
$orphaned = 0;
$registered_sidebars_keys = array_keys( $wp_registered_sidebars );
$registered_widgets_ids = array_keys( $wp_registered_widgets );
$old_sidebars_widgets = get_theme_mod( 'sidebars_widgets' );
if ( is_array( $old_sidebars_widgets ) ) {
// time() that sidebars were stored is in $old_sidebars_widgets['time']
$_sidebars_widgets = $old_sidebars_widgets['data'];
if ( 'customize' !== $theme_changed ) {
remove_theme_mod( 'sidebars_widgets' );
if ( ! is_array( get_theme_mod( 'sidebars_widgets' ) ) ) {
if ( empty( $sidebars_widgets ) ) {
return array();
}
foreach ( $_sidebars_widgets as $sidebar => $widgets ) {
if ( 'wp_inactive_widgets' === $sidebar || 'orphaned_widgets' === substr( $sidebar, 0, 16 ) ) {
continue;
}
if ( !in_array( $sidebar, $registered_sidebar_keys ) ) {
$_sidebars_widgets['orphaned_widgets_' . ++$orphaned] = $widgets;
unset( $_sidebars_widgets[$sidebar] );
}
}
} else {
if ( empty( $sidebars_widgets ) )
return;
unset( $sidebars_widgets['array_version'] );
$old = array_keys($sidebars_widgets);
sort($old);
sort($registered_sidebar_keys);
$sidebars_widgets_keys = array_keys( $sidebars_widgets );
sort( $sidebars_widgets_keys );
sort( $registered_sidebars_keys );
if ( $old == $registered_sidebar_keys )
return;
if ( $sidebars_widgets_keys === $registered_sidebars_keys ) {
$sidebars_widgets = _wp_remove_unregistered_widgets( $sidebars_widgets, $registered_widgets_ids );
$_sidebars_widgets = array(
'wp_inactive_widgets' => !empty( $sidebars_widgets['wp_inactive_widgets'] ) ? $sidebars_widgets['wp_inactive_widgets'] : array()
);
return $sidebars_widgets;
}
}
unset( $sidebars_widgets['wp_inactive_widgets'] );
foreach ( $wp_registered_sidebars as $id => $settings ) {
if ( $theme_changed ) {
$_sidebars_widgets[$id] = array_shift( $sidebars_widgets );
} else {
// no theme change, grab only sidebars that are currently registered
if ( isset( $sidebars_widgets[$id] ) ) {
$_sidebars_widgets[$id] = $sidebars_widgets[$id];
unset( $sidebars_widgets[$id] );
// Discard invalid, theme-specific widgets from sidebars.
$sidebars_widgets = _wp_remove_unregistered_widgets( $sidebars_widgets, $registered_widgets_ids );
$sidebars_widgets = wp_map_sidebars_widgets( $sidebars_widgets );
// Find hidden/lost multi-widget instances.
$shown_widgets = call_user_func_array( 'array_merge', $sidebars_widgets );
$lost_widgets = array_diff( $registered_widgets_ids, $shown_widgets );
foreach ( $lost_widgets as $key => $widget_id ) {
$number = preg_replace( '/.+?-([0-9]+)$/', '$1', $widget_id );
// Only keep active and default widgets.
if ( is_numeric( $number ) && (int) $number < 2 ) {
unset( $lost_widgets[ $key ] );
}
}
$sidebars_widgets['wp_inactive_widgets'] = array_merge( $lost_widgets, (array) $sidebars_widgets['wp_inactive_widgets'] );
if ( 'customize' !== $theme_changed ) {
wp_set_sidebars_widgets( $sidebars_widgets );
}
return $sidebars_widgets;
}
/**
* Compares a list of sidebars with their widgets against a whitelist.
*
* @since 4.9.0
*
* @param array $existing_sidebars_widgets List of sidebars and their widget instance IDs.
* @return array Mapped sidebars widgets.
*/
function wp_map_sidebars_widgets( $existing_sidebars_widgets ) {
global $wp_registered_sidebars;
$new_sidebars_widgets = array(
'wp_inactive_widgets' => array(),
);
// Short-circuit if there are no sidebars to map.
if ( ! is_array( $existing_sidebars_widgets ) || empty( $existing_sidebars_widgets ) ) {
return $new_sidebars_widgets;
}
foreach ( $existing_sidebars_widgets as $sidebar => $widgets ) {
if ( 'wp_inactive_widgets' === $sidebar || 'orphaned_widgets' === substr( $sidebar, 0, 16 ) ) {
$new_sidebars_widgets['wp_inactive_widgets'] = array_merge( $new_sidebars_widgets['wp_inactive_widgets'], (array) $widgets );
unset( $existing_sidebars_widgets[ $sidebar ] );
}
}
// If old and new theme have just one sidebar, map it and we're done.
if ( 1 === count( $existing_sidebars_widgets ) && 1 === count( $wp_registered_sidebars ) ) {
$new_sidebars_widgets[ key( $wp_registered_sidebars ) ] = array_pop( $existing_sidebars_widgets );
return $new_sidebars_widgets;
}
// Map locations with the same slug.
$existing_sidebars = array_keys( $existing_sidebars_widgets );
foreach ( $wp_registered_sidebars as $sidebar => $name ) {
if ( in_array( $sidebar, $existing_sidebars, true ) ) {
$new_sidebars_widgets[ $sidebar ] = $existing_sidebars_widgets[ $sidebar ];
unset( $existing_sidebars_widgets[ $sidebar ] );
} else {
$new_sidebars_widgets[ $sidebar ] = array();
}
}
// If there are no old sidebars left, then we're done.
if ( empty( $existing_sidebars_widgets ) ) {
return $new_sidebars_widgets;
}
/*
* If old and new theme both have sidebars that contain phrases
* from within the same group, make an educated guess and map it.
*/
$common_slug_groups = array(
array( 'sidebar', 'primary', 'main', 'right' ),
array( 'second', 'left' ),
array( 'sidebar-2', 'footer', 'bottom' ),
array( 'header', 'top' ),
);
// Go through each group...
foreach ( $common_slug_groups as $slug_group ) {
// ...and see if any of these slugs...
foreach ( $slug_group as $slug ) {
// ...and any of the new sidebars...
foreach ( $wp_registered_sidebars as $new_sidebar => $args ) {
// ...actually match!
if ( false === stripos( $new_sidebar, $slug ) && false === stripos( $slug, $new_sidebar ) ) {
continue;
}
// Then see if any of the existing sidebars...
foreach ( $existing_sidebars_widgets as $sidebar => $widgets ) {
// ...and any slug in the same group...
foreach ( $slug_group as $slug ) {
// ... have a match as well.
if ( false === stripos( $sidebar, $slug ) && false === stripos( $slug, $sidebar ) ) {
continue;
}
// Make sure this sidebar wasn't mapped and removed previously.
if ( ! empty( $existing_sidebars_widgets[ $sidebar ] ) ) {
// We have a match that can be mapped!
$new_sidebars_widgets[ $new_sidebar ] = array_merge( $new_sidebars_widgets[ $new_sidebar ], $existing_sidebars_widgets[ $sidebar ] );
// Remove the mapped sidebar so it can't be mapped again.
unset( $existing_sidebars_widgets[ $sidebar ] );
// Go back and check the next new sidebar.
continue 3;
}
} // endforeach ( $slug_group as $slug )
} // endforeach ( $existing_sidebars_widgets as $sidebar => $widgets )
} // endforeach foreach ( $wp_registered_sidebars as $new_sidebar => $args )
} // endforeach ( $slug_group as $slug )
} // endforeach ( $common_slug_groups as $slug_group )
// Move any left over widgets to inactive sidebar.
foreach ( $existing_sidebars_widgets as $widgets ) {
if ( is_array( $widgets ) && ! empty( $widgets ) ) {
$new_sidebars_widgets['wp_inactive_widgets'] = array_merge( $new_sidebars_widgets['wp_inactive_widgets'], $widgets );
}
}
// Sidebars_widgets settings from when this theme was previously active.
$old_sidebars_widgets = get_theme_mod( 'sidebars_widgets' );
if ( is_array( $old_sidebars_widgets ) ) {
// Only check sidebars that are empty or have not been mapped to yet.
foreach ( $new_sidebars_widgets as $new_sidebar => $new_widgets ) {
if ( array_key_exists( $new_sidebar, $old_sidebars_widgets ) && ! empty( $new_widgets ) ) {
unset( $old_sidebars_widgets[ $new_sidebar ] );
}
}
foreach ( $sidebars_widgets as $val ) {
if ( is_array($val) && ! empty( $val ) )
$_sidebars_widgets['orphaned_widgets_' . ++$orphaned] = $val;
}
}
// discard invalid, theme-specific widgets from sidebars
$shown_widgets = array();
foreach ( $_sidebars_widgets as $sidebar => $widgets ) {
if ( !is_array($widgets) )
continue;
$_widgets = array();
foreach ( $widgets as $widget ) {
if ( isset($wp_registered_widgets[$widget]) )
$_widgets[] = $widget;
// Remove orphaned widgets, we're only interested in previously active sidebars.
foreach ( $old_sidebars_widgets as $sidebar => $widgets ) {
if ( 'orphaned_widgets' === substr( $sidebar, 0, 16 ) ) {
unset( $old_sidebars_widgets[ $sidebar ] );
}
}
$_sidebars_widgets[$sidebar] = $_widgets;
$shown_widgets = array_merge($shown_widgets, $_widgets);
$old_sidebars_widgets = _wp_remove_unregistered_widgets( $old_sidebars_widgets );
if ( ! empty( $old_sidebars_widgets ) ) {
// Go through each remaining sidebar...
foreach ( $old_sidebars_widgets as $old_sidebar => $old_widgets ) {
// ...and check every new sidebar...
foreach ( $new_sidebars_widgets as $new_sidebar => $new_widgets ) {
// ...for every widget we're trying to revive.
foreach ( $old_widgets as $key => $widget_id ) {
$active_key = array_search( $widget_id, $new_widgets, true );
// If the widget is used elsewhere...
if ( false !== $active_key ) {
// ...and that elsewhere is inactive widgets...
if ( 'wp_inactive_widgets' === $new_sidebar ) {
// ...remove it from there and keep the active version...
unset( $new_sidebars_widgets['wp_inactive_widgets'][ $active_key ] );
} else {
// ...otherwise remove it from the old sidebar and keep it in the new one.
unset( $old_sidebars_widgets[ $old_sidebar ][ $key ] );
}
} // endif ( $active_key )
} // endforeach ( $old_widgets as $key => $widget_id )
} // endforeach ( $new_sidebars_widgets as $new_sidebar => $new_widgets )
} // endforeach ( $old_sidebars_widgets as $old_sidebar => $old_widgets )
} // endif ( ! empty( $old_sidebars_widgets ) )
// Restore widget settings from when theme was previously active.
$new_sidebars_widgets = array_merge( $new_sidebars_widgets, $old_sidebars_widgets );
}
$sidebars_widgets = $_sidebars_widgets;
unset($_sidebars_widgets, $_widgets);
return $new_sidebars_widgets;
}
// find hidden/lost multi-widget instances
$lost_widgets = array();
foreach ( $wp_registered_widgets as $key => $val ) {
if ( in_array($key, $shown_widgets, true) )
continue;
$number = preg_replace('/.+?-([0-9]+)$/', '$1', $key);
if ( 2 > (int) $number )
continue;
$lost_widgets[] = $key;
/**
* Compares a list of sidebars with their widgets against a whitelist.
*
* @since 4.9.0
*
* @param array $sidebars_widgets List of sidebars and their widget instance IDs.
* @param array $whitelist Optional. List of widget IDs to compare against. Default: Registered widgets.
* @return array Sidebars with whitelisted widgets.
*/
function _wp_remove_unregistered_widgets( $sidebars_widgets, $whitelist = array() ) {
if ( empty( $whitelist ) ) {
$whitelist = array_keys( $GLOBALS['wp_registered_widgets'] );
}
$sidebars_widgets['wp_inactive_widgets'] = array_merge($lost_widgets, (array) $sidebars_widgets['wp_inactive_widgets']);
if ( 'customize' !== $theme_changed ) {
wp_set_sidebars_widgets( $sidebars_widgets );
foreach ( $sidebars_widgets as $sidebar => $widgets ) {
if ( is_array( $widgets ) ) {
$sidebars_widgets[ $sidebar ] = array_intersect( $widgets, $whitelist );
}
}
return $sidebars_widgets;