forked from ThemeFuse/Unyson-Translation-Extension
/
class-fw-extension-translation.php
659 lines (544 loc) · 17.8 KB
/
class-fw-extension-translation.php
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<?php if ( ! defined( 'FW' ) ) {
die( 'Forbidden' );
}
/**
* Translation extension is a main extension that
* manage sub extensions in order to implement translation
* mechanism in WordPress.
*/
/**
* Class FW_Extension_Translation
*/
class FW_Extension_Translation extends FW_Extension {
/**
* Languages list.
*
* @access public
* @var
*/
public $languages_list;
public $home = '';
public $lang_tag = 'fw_lang';
/**
* Called after all extensions instances was created
* @internal
*/
protected function _init() {
$this->languages_list = new FW_Language();
$this->home = get_home_url();
add_action( 'shutdown', array( $this, 'enable_flush_rules' ) );
add_action( 'fw_extensions_after_activation', array( $this, 'set_flush_rules_option' ) );
add_action( 'fw_extensions_before_deactivation', array( $this, 'disable_flush_rules' ) );
if ( is_admin() ) {
$this->add_admin_actions();
$this->add_admin_filters();
}
add_action( 'widgets_init', array( $this, 'register_language_switcher_widget' ) );
// rewrite rules add language parameter.
add_filter( 'rewrite_rules_array', array( $this, 'change_rewrite_rules' ) ); // needed for post type archives
add_action( 'fw_ext_translation_render_language_switcher', array( $this, 'frontend_language_switcher' ) );
add_action( 'init', array( $this, 'set_admin_active_language' ), 0 );
add_filter( 'query_vars', array( $this, 'add_custom_query_var' ), 0 );
add_action( 'parse_query', array( $this, 'set_active_cookie' ), 20 );
add_action( 'parse_query', array( $this, 'parse_query' ), 10, 1 );
add_filter( 'option_page_on_front', array( $this, 'translate_home_page' ) );
add_filter( 'option_page_for_posts', array( $this, 'translate_home_page' ) );
add_filter( 'pre_get_posts', array( $this, 'filter_homepage_query' ) );
add_filter( 'home_url', array( $this, 'filter_home_url' ), 10, 3 );
}
/**
* Register language switcher widget.
*/
public function register_language_switcher_widget() {
register_widget( 'FW_Widget_Language_Switcher' );
}
/**
* Filter home url.
*
* @param $url
* @param $path
* @param $schema
*
* @return mixed|string
*/
public function filter_home_url( $url, $path, $schema ) {
$active_lang = $this->get_frontend_active_language();
if (
is_admin() ||
! did_action( 'template_redirect' ) ||
did_action( 'login_init' ) ||
rtrim( $url, '/' ) == rtrim( $this->home, '/' )
) {
return $url;
}
global $wp_rewrite;
if ( $wp_rewrite->using_permalinks() ) {
if ( $path && is_string( $path ) && '/' != $path ) {
$url = str_replace( $path, '', $url );
$url = untrailingslashit( $url ) . user_trailingslashit( '/' . $this->lang_tag . '/' . $active_lang . '/' . ltrim( $path, '/' ) );
} else {
$url = untrailingslashit( $url ) . user_trailingslashit( '/' . $this->lang_tag . '/' . $active_lang );
}
} else {
$url = esc_url( add_query_arg( array( $this->lang_tag => $active_lang ), $url ) );
}
return $url;
}
public function set_flush_rules_option( $extensions ) {
if ( in_array( $this->get_name(), array_keys( $extensions ) ) ) {
fw_set_db_ext_settings_option( $this->get_name(), 'flush_rules_enabled', false );
}
}
/**
* Enable flush_rules.
*/
public function enable_flush_rules() {
$flush_rules = (bool) fw_get_db_ext_settings_option( $this->get_name(), 'flush_rules_enabled' );
if ( $flush_rules === false ) {
flush_rewrite_rules();
fw_set_db_ext_settings_option( $this->get_name(), 'flush_rules_enabled', true );
}
}
/**
* Disable flush_rules.
*
* @param $extensions
*/
public function disable_flush_rules( $extensions ) {
if ( in_array( $this->get_name(), array_keys( $extensions ) ) ) {
remove_filter( 'rewrite_rules_array', array( $this, 'change_rewrite_rules' ) );
flush_rewrite_rules();
}
}
/**
* Add lang query var.
*
* @param $vars
*
* @return array
*/
function add_custom_query_var( $vars ) {
$vars[] = $this->lang_tag;
return $vars;
}
/**
* Function that resolve WordPress bug with frontpage,
* see this link https://core.trac.wordpress.org/ticket/23867
*
* @param $query
*/
public function parse_query( $query ) {
$qv =& $query->query_vars;
if ( $query->is_home && 'page' == get_option( 'show_on_front' ) && get_option( 'page_on_front' ) ) {
$_query = wp_parse_args( $query->query );
// pagename can be set and empty depending on matched rewrite rules. Ignore an empty pagename.
if ( isset( $_query['pagename'] ) && '' == $_query['pagename'] ) {
unset( $_query['pagename'] );
}
// this is where will break from core wordpress
$ignore = array( 'preview', 'page', 'paged', 'cpage' );
$ignore[] = $this->lang_tag;
if ( empty( $_query ) || ! array_diff( array_keys( $_query ), $ignore ) ) {
$query->is_page = true;
$query->is_home = false;
$qv['page_id'] = get_option( 'page_on_front' );
// Correct <!--nextpage--> for page_on_front
if ( ! empty( $qv['paged'] ) ) {
$qv['page'] = $qv['paged'];
unset( $qv['paged'] );
}
}
}
// reset the is_singular flag after our updated code above
$query->is_singular = $query->is_single || $query->is_page || $query->is_attachment;
}
/**
* Function that change rewrite rules for correct working with languages.
*
* @param $rules
*
* @return array
*/
public function change_rewrite_rules( $rules ) {
$collector = array();
global $wp_rewrite;
$enabled_language_string = implode( '|', array_keys( $this->get_enabled_languages() ) );
foreach ( $rules as $key => $rule ) {
$collector[ $this->lang_tag . '/(' . $enabled_language_string . ')/' . str_replace( $wp_rewrite->root, '', $key ) ] = str_replace(
array( '[8]', '[7]', '[6]', '[5]', '[4]', '[3]', '[2]', '[1]', '?' ),
array(
'[9]',
'[8]',
'[7]',
'[6]',
'[5]',
'[4]',
'[3]',
'[2]',
'?' . $this->lang_tag . '=$matches[1]&'
),
$rule
);
}
$slug = $wp_rewrite->root . $this->lang_tag . '/(' . $enabled_language_string . ')/';
$collector[ $slug . '?$' ] = $wp_rewrite->index . '?' . $this->lang_tag . '=$matches[1]';
return $collector + $rules;
}
/**
* @internal
*/
public function _admin_action_enqueue_static() {
wp_enqueue_style(
'fw-extension-' . $this->get_name() . '-css',
$this->get_declared_URI( '/static/css/style.css' ),
array( 'fw-selectize' ),
fw()->manifest->get_version()
);
wp_enqueue_script(
$this->get_name() . '-js',
$this->get_declared_URI( '/static/js/general.js' ),
array( 'jquery', 'fw-selectize', 'fw' ),
fw()->manifest->get_version(),
true
);
}
/**
* Set active language and set it to cookie.
*/
public function set_active_cookie() {
if ( ! headers_sent() && ! is_admin() ) {
$active_lang = get_query_var( $this->lang_tag,
isset( $_COOKIE['fw_active_lang'] ) ?
$_COOKIE['fw_active_lang'] :
$this->get_default_language_code()
);
setcookie( 'fw_active_lang',
$active_lang,
time() + 31536000 /* 1 year */,
COOKIEPATH
);
if ( isset( $_COOKIE['fw_active_lang'] ) ) {
$_COOKIE['fw_active_lang'] = $active_lang;
}
}
}
/**
* filter homepage main query when is not set page_on_front or page_for_posts.
*
* @param $query
*
* @return mixed
*/
public function filter_homepage_query( $query ) {
if ( //to avoid error msg
did_action( 'wp' ) &&
//when page_for_posts and page_on_front not set
( $query->is_front_page() && $query->is_main_query() ) ||
//when page_for_posts is set page_on_front not set
( $query->is_home() && $query->is_main_query() )
) {
$query->set( 'meta_key', 'translation_lang' );
$query->set( 'meta_value', $this->get_frontend_active_language() );
$query->set( 'meta_compare', '=' );
}
return $query;
}
/**
* Filter frontend homepage by active language.
*
* @param $id
*
* @return mixed
*/
public function translate_home_page( $id ) {
//TODO MUST OPTIMIZE AND CACHE ID BECAUSE THIS FILTER IS RUN MANY TIMES
if ( 'page' == get_option( 'show_on_front' ) && $id > 0 ) {
$translation_id = get_post_meta( $id, 'translation_id', true );
$data = $this->get_child( 'translate-posts' )->query_translation( $translation_id );
$translation = $this->get_child( 'translate-posts' )->translation_exists( $data, $this->get_frontend_active_language() );
if ( ! empty( $translation['post_id'] ) ) {
$id = $translation['post_id'];
}
}
return $id;
}
/**
* Group admin actions.
*/
private function add_admin_actions() {
add_action( 'admin_enqueue_scripts', array( $this, '_admin_action_enqueue_static' ) );
add_action( 'admin_bar_menu', array( $this, 'admin_language_switcher' ) );
add_action( 'fw_extension_settings_form_saved:' . $this->get_name(), array(
$this,
'set_default_admin_active_language'
) );
add_action( 'fw_extension_settings_form_saved:' . $this->get_name(), array(
$this,
'convert_data_to_default_language'
) );
}
/**
* Group admin filters.
*/
private function add_admin_filters() {
add_filter( 'get_pages', array( $this, 'filter_dropdown_pages_by_language' ) );
}
/**
* Filter dropdown select with pages in options-reading.php and customize.php.
*
* @param $pages
*
* @return mixed
*/
public function filter_dropdown_pages_by_language( $pages ) {
global $pagenow;
if ( 'options-reading.php' === $pagenow or 'customize.php' === $pagenow ) {
foreach ( $pages as $key => $page ) {
$lang = get_post_meta( $page->ID, 'translation_lang', true );
if ( $lang !== $this->get_admin_active_language() ) {
unset( $pages[ $key ] );
}
}
}
return $pages;
}
/**
* Set admin active language
*/
public function set_admin_active_language() {
if (
! defined( 'DOING_AJAX' ) &&
! is_null( $active_lang = FW_Request::GET( 'fw_translate_to' ) ) &&
$this->languages_list->code_exists( $active_lang ) &&
current_user_can( 'edit_user', $user_id = get_current_user_id() )
) {
update_user_meta( $user_id, 'fw_active_lang', $active_lang );
}
}
public function set_default_admin_active_language() {
if ( current_user_can( 'edit_user', $user_id = get_current_user_id() ) ) {
update_user_meta( $user_id, 'fw_active_lang', $this->get_default_language_code() );
}
}
/**
* Get admin active language.
*
* @return mixed|null
*/
public function get_admin_active_language() {
$active_lang = get_user_meta( get_current_user_id(), 'fw_active_lang', true );
return empty( $active_lang ) ? $this->get_default_language_code() : $active_lang;
}
/**
* Get frontend active language.
*
* @return array|bool|mixed|null|string
*/
public function get_frontend_active_language() {
$active_lang = FW_Request::COOKIE( 'fw_active_lang' );
return isset( $active_lang ) ? FW_Request::COOKIE( 'fw_active_lang' ) : $this->get_default_language_code();
}
/**
* Get enabled languages.
*
* @return array
*/
public function get_enabled_languages() {
return array_merge(
$this->get_translated_languages(),
array( $this->get_default_language_code() => $this->get_default_language() )
);
}
/**
* Get enabled languages without $lang parameter.
*
* @param $lang
*
* @return array
*/
public function get_enabled_languages_without( $lang ) {
return array_diff_key( $this->get_enabled_languages(), array( $lang => $lang ) );
}
/**
* Generate default backend switch urls.
*
* @return array
*/
private function generate_default_backend_switch_urls() {
$languages = $this->get_enabled_languages_without( $this->get_admin_active_language() );
$collector = array();
foreach ( $languages as $code => $language ) {
$collector[ $code ] = array(
'lang_name' => $language['name'],
'url' => esc_url( add_query_arg( array( 'fw_translate_to' => $code ) ) )
);
}
return $collector;
}
/**
* Generate admin bar language switcher
*
* @param $wp_admin_bar
*/
function admin_language_switcher( $wp_admin_bar ) {
global $pagenow;
global $post;
$parent_id = 'fw_language_switcher';
$active_lang = $this->get_admin_active_language();
$enabled_languages = $this->get_enabled_languages();
switch ( $pagenow ) {
case 'post.php' :
case 'post-new.php' :
$post_id = $post->ID;
$admin_switch_urls = $this->get_child( 'translate-posts' )->generate_backend_switch_urls( $post_id );
break;
case 'edit-tags.php' :
$term_id = FW_Request::GET( 'fw_translate_id', FW_Request::GET( 'tag_ID' ) );
if ( ! is_null( $term_id ) ) {
$admin_switch_urls = $this->get_child( 'translate-terms' )->generate_backend_switch_urls( $term_id );
} else {
$admin_switch_urls = $this->generate_default_backend_switch_urls();
}
break;
case 'nav-menus.php':
global $nav_menu_selected_id;
$menu_id = FW_Request::GET( 'menu', $nav_menu_selected_id );
$admin_switch_urls = $this->get_child( 'translate-menus' )->generate_backend_switch_urls( $menu_id );
break;
default :
$admin_switch_urls = $this->generate_default_backend_switch_urls();
}
$args = array(
'id' => $parent_id,
// id of the existing child node (New > Post)
'title' => '<span style="cursor:pointer" ><img src="' . fw_ext_translation_get_flag( $active_lang ) . '"> ' . $enabled_languages[ $active_lang ]['name'] . '</span>',
// alter the title of existing node
'parent' => false,
// set parent to false to make it a top level (parent) node,
);
$wp_admin_bar->add_node( $args );
foreach ( $admin_switch_urls as $key => $language ) {
$args = array(
'id' => 'fw-lang-' . $key,
// id of the existing child node (New > Post)
'title' => '<img src="' . fw_ext_translation_get_flag( $key ) . '"> ' . $language['lang_name'],
// alter the title of existing node
'parent' => $parent_id,
// set parent to false to make it a top level (parent) node
'href' => $language['url'],
);
$wp_admin_bar->add_node( $args );
}
}
/**
* Generate frontend language switcher
*/
public function frontend_language_switcher() {
if ( is_single() ) {
global $post;
$frontend_urls = $this->get_child( 'translate-posts' )->generate_frontend_switch_urls( $post->ID );
$this->render_frontend_switch_urls( $frontend_urls );
}
if ( is_front_page() && ! is_home() ) {
$post_id = 'page' == get_option( 'show_on_front' ) ? get_option( 'page_on_front' ) : get_option( 'page_for_posts' );
$frontend_urls = $this->get_child( 'translate-posts' )->generate_frontend_switch_urls( $post_id );
$this->render_frontend_switch_urls( $frontend_urls );
}
if ( is_page() and ! is_front_page() ) {
global $post;
$frontend_urls = $this->get_child( 'translate-posts' )->generate_frontend_switch_urls( $post->ID );
$this->render_frontend_switch_urls( $frontend_urls );
}
if ( is_archive() && ! is_date() ) {
$frontend_urls = $this->get_child( 'translate-terms' )->generate_frontend_switch_urls();
$this->render_frontend_switch_urls( $frontend_urls );
}
if ( is_search() || is_date() || is_home() ) {
$frontend_urls = $this->generate_default_frontend_switch_urls();
$this->render_frontend_switch_urls( $frontend_urls );
}
}
/**
* Render frontend switch urls.
*
* @param $frontend_urls
*/
public function render_frontend_switch_urls( $frontend_urls ) {
$str = '<ul>';
foreach ( $frontend_urls as $lang_code => $link ) {
$str .= '<li><a href="' . $link . '"><img src="' . fw_ext_translation_get_flag( $lang_code ) . '"> ' . fw_ext_translation_get_language_name( $lang_code ) . '</a></li>';
}
$str .= '</ul>';
echo apply_filters( 'fw_ext_translation_change_render_language_switcher', $str, $frontend_urls );
}
/**
* Generate default frontend swith urls.
*
* @return array
*/
private function generate_default_frontend_switch_urls() {
$languages = $this->get_enabled_languages();
$frontend_urls = array();
global $wp_rewrite;
$current_url = ( fw_current_url() === preg_replace( '/(\/fw_lang\/)(\w+)/ix', '', get_home_url() ) ) ?
get_home_url() :
fw_current_url();
foreach ( $languages as $lang_code => $language ) {
if ( $wp_rewrite->using_permalinks() ) {
$permalink = preg_replace( '/(\/fw_lang\/)(\w+)/ix', '${1}' . $lang_code, $current_url );
$frontend_urls[ $lang_code ] = $permalink;
} else {
$permalink = esc_url( remove_query_arg( 'fw_lang', $current_url ) );
$frontend_urls[ $lang_code ] = esc_url( add_query_arg( array( 'fw_lang' => $lang_code ), $permalink ) );
}
}
return $frontend_urls;
}
/**
* Get translated languages codes.
*
* @return array
*/
public function get_translated_languages_codes() {
return (array) fw_get_db_ext_settings_option( $this->get_name(), 'translate-to' );
}
public function get_enabled_custom_post_types() {
return (array) fw_get_db_ext_settings_option( $this->get_name(), 'post_types' );
}
/**
* Get translated languages.
*
* @return array
*/
public function get_translated_languages() {
return array_intersect_key( $this->languages_list->get_languages(), array_flip( $this->get_translated_languages_codes() ) );
}
/**
* Get default language code.
*
* @return mixed|null
*/
public function get_default_language_code() {
return fw_get_db_ext_settings_option( $this->get_name(), 'default-language' );
}
/**
* Get default language.
*
* @return mixed
*/
public function get_default_language() {
return $this->languages_list->get_language( $this->get_default_language_code() );
}
/**
* Convert data to default language
*/
public function convert_data_to_default_language() {
$convert = fw_get_db_ext_settings_option( $this->get_name(), 'convert' );
if ( $convert ) {
$this->get_child( 'translate-menus' )->convert_to_default_language();
$this->get_child( 'translate-terms' )->convert_to_default_language();
$this->get_child( 'translate-posts' )->convert_to_default_language();
$this->get_child( 'translate-widgets' )->convert_to_default_language();
}
}
}