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<?php
/**
* @package WP Subtitle
* @subpackage SEOPress
*
* @since 3.4
*
* Compatibility for the SEOPress plugin:
* https://wordpress.org/plugins/wp-seopress/
*
* Adds support for a `%%wps_subtitle%%` placeholder to include
* the subtitle in browser titles and meta descriptions.
*
* Also adds `%%wps_subtitle_before_sep%%` and `%%wps_subtitle_after_sep%%`.
* These can be used to add seperators before/after the subtitle. If there
* is no subtitle set these placeholders will not be output.
*
* The seperator placeholders can be customized using the `wps_subtitle_seo_before_sep`
* and `wps_subtitle_seo_after_sep` filters.
*
* The seperator placeholders include a 'space' either side by default. This means that
* you should create your title template with no whitespace around the seperator placeholders.
* It allows you to customize the seperators to include commas and butt the seperator up to
* the preceding/following text.
*
* e.g. If '%%wps_subtitle_before_sep%%' is set to ', ':
* `%%title%%%%wps_subtitle_before_sep%%%%wps_subtitle%% %%sep%% %%sitename%%`
* "Title, Subtitle - Sitename"
*/
class WPSubtitle_SEOPress {
/**
* Constructor
*
* @since 3.4
*
* @internal Do not create multiple instances.
*/
public function __construct() {
add_filter( 'seopress_titles_template_variables_array', array( $this, 'add_seopress_replacements' ) );
add_filter( 'seopress_titles_template_replace_array', array( $this, 'replace_seopress_replacements' ) );
}
/**
* Add SEOPress Replacements Variables
*
* @since 3.4
*
* @param array $replacements SEO replacements variables.
* @return array Filtered replacements variables.
*
* @internal Called via the `seopress_titles_template_variables_array` filter.
*/
public function add_seopress_replacements( $replacements ) {
$replacements[] = '%%wps_subtitle%%';
$replacements[] = '%%wps_subtitle_before_sep%%';
$replacements[] = '%%wps_subtitle_after_sep%%';
return $replacements;
}
/**
* Replace SEOPress Replacements Values
*
* @since 3.4
*
* @param array $replacements SEO replacements values.
* @return array Filtered replacements values.
*
* @internal Called via the `seopress_titles_template_replace_array` filter.
*/
public function replace_seopress_replacements( $replacements ) {
global $post;
$wp_subtitle = new WP_Subtitle( $post );
$subtitle = $wp_subtitle->get_subtitle();
$replacements[] = $subtitle;
$sep = ' ' . $replacements[0] . ' ';
$before_sep = '';
$after_sep = '';
if ( ! empty( $subtitle ) ) {
$before_sep = apply_filters( 'wps_subtitle_seo_before_sep', $sep );
$after_sep = apply_filters( 'wps_subtitle_seo_after_sep', $sep );
}
$replacements[] = $before_sep;
$replacements[] = $after_sep;
return $replacements;
}
}