Source
File: wp-admin/update-core.php
function list_theme_updates() {
$themes = get_theme_updates();
if ( empty( $themes ) ) {
echo '<h2>' . __( 'Themes' ) . '</h2>';
echo '<p>' . __( 'Your themes are all up to date.' ) . '</p>';
return;
}
$form_action = 'update-core.php?action=do-theme-upgrade';
?>
<h2><?php _e( 'Themes' ); ?></h2>
<p><?php _e( 'The following themes have new versions available. Check the ones you want to update and then click “Update Themes”.' ); ?></p>
<p>
<?php
printf(
/* translators: %s: Link to documentation on child themes. */
__( '<strong>Please Note:</strong> Any customizations you have made to theme files will be lost. Please consider using <a href="%s">child themes</a> for modifications.' ),
__( 'https://developer.wordpress.org/themes/advanced-topics/child-themes/' )
);
?>
</p>
<form method="post" action="<?php echo esc_url( $form_action ); ?>" name="upgrade-themes" class="upgrade">
<?php wp_nonce_field( 'upgrade-core' ); ?>
<p><input id="upgrade-themes" class="button" type="submit" value="<?php esc_attr_e( 'Update Themes' ); ?>" name="upgrade" /></p>
<table class="widefat updates-table" id="update-themes-table">
<thead>
<tr>
<td class="manage-column check-column"><input type="checkbox" id="themes-select-all" /></td>
<td class="manage-column"><label for="themes-select-all"><?php _e( 'Select All' ); ?></label></td>
</tr>
</thead>
<tbody class="plugins">
<?php
$auto_updates = array();
if ( wp_is_auto_update_enabled_for_type( 'theme' ) ) {
$auto_updates = (array) get_site_option( 'auto_update_themes', array() );
$auto_update_notice = ' | ' . wp_get_auto_update_message();
}
foreach ( $themes as $stylesheet => $theme ) {
$requires_wp = isset( $theme->update['requires'] ) ? $theme->update['requires'] : null;
$requires_php = isset( $theme->update['requires_php'] ) ? $theme->update['requires_php'] : null;
$compatible_wp = is_wp_version_compatible( $requires_wp );
$compatible_php = is_php_version_compatible( $requires_php );
$compat = '';
if ( ! $compatible_wp && ! $compatible_php ) {
$compat .= '<br>' . __( 'This update doesn’t work with your versions of WordPress and PHP.' ) . ' ';
if ( current_user_can( 'update_core' ) && current_user_can( 'update_php' ) ) {
$compat .= sprintf(
/* translators: 1: URL to WordPress Updates screen, 2: URL to Update PHP page. */
__( '<a href="%1$s">Please update WordPress</a>, and then <a href="%2$s">learn more about updating PHP</a>.' ),
self_admin_url( 'update-core.php' ),
esc_url( wp_get_update_php_url() )
);
$annotation = wp_get_update_php_annotation();
if ( $annotation ) {
$compat .= '</p><p><em>' . $annotation . '</em>';
}
} elseif ( current_user_can( 'update_core' ) ) {
$compat .= sprintf(
/* translators: %s: URL to WordPress Updates screen. */
__( '<a href="%s">Please update WordPress</a>.' ),
self_admin_url( 'update-core.php' )
);
} elseif ( current_user_can( 'update_php' ) ) {
$compat .= sprintf(
/* translators: %s: URL to Update PHP page. */
__( '<a href="%s">Learn more about updating PHP</a>.' ),
esc_url( wp_get_update_php_url() )
);
$annotation = wp_get_update_php_annotation();
if ( $annotation ) {
$compat .= '</p><p><em>' . $annotation . '</em>';
}
}
} elseif ( ! $compatible_wp ) {
$compat .= '<br>' . __( 'This update doesn’t work with your version of WordPress.' ) . ' ';
if ( current_user_can( 'update_core' ) ) {
$compat .= sprintf(
/* translators: %s: URL to WordPress Updates screen. */
__( '<a href="%s">Please update WordPress</a>.' ),
self_admin_url( 'update-core.php' )
);
}
} elseif ( ! $compatible_php ) {
$compat .= '<br>' . __( 'This update doesn’t work with your version of PHP.' ) . ' ';
if ( current_user_can( 'update_php' ) ) {
$compat .= sprintf(
/* translators: %s: URL to Update PHP page. */
__( '<a href="%s">Learn more about updating PHP</a>.' ),
esc_url( wp_get_update_php_url() )
);
$annotation = wp_get_update_php_annotation();
if ( $annotation ) {
$compat .= '</p><p><em>' . $annotation . '</em>';
}
}
}
$checkbox_id = 'checkbox_' . md5( $theme->get( 'Name' ) );
?>
<tr>
<td class="check-column">
<?php if ( $compatible_wp && $compatible_php ) : ?>
<input type="checkbox" name="checked[]" id="<?php echo $checkbox_id; ?>" value="<?php echo esc_attr( $stylesheet ); ?>" />
<label for="<?php echo $checkbox_id; ?>" class="screen-reader-text">
<?php
/* translators: %s: Theme name. */
printf( __( 'Select %s' ), $theme->display( 'Name' ) );
?>
</label>
<?php endif; ?>
</td>
<td class="plugin-title"><p>
<img src="<?php echo esc_url( $theme->get_screenshot() ); ?>" width="85" height="64" class="updates-table-screenshot" alt="" />
<strong><?php echo $theme->display( 'Name' ); ?></strong>
<?php
printf(
/* translators: 1: Theme version, 2: New version. */
__( 'You have version %1$s installed. Update to %2$s.' ),
$theme->display( 'Version' ),
$theme->update['new_version']
);
echo ' ' . $compat;
if ( in_array( $stylesheet, $auto_updates, true ) ) {
echo $auto_update_notice;
}
?>
</p></td>
</tr>
<?php
}
?>
</tbody>
<tfoot>
<tr>
<td class="manage-column check-column"><input type="checkbox" id="themes-select-all-2" /></td>
<td class="manage-column"><label for="themes-select-all-2"><?php _e( 'Select All' ); ?></label></td>
</tr>
</tfoot>
</table>
<p><input id="upgrade-themes-2" class="button" type="submit" value="<?php esc_attr_e( 'Update Themes' ); ?>" name="upgrade" /></p>
</form>
<?php
}