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<?php |
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|
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/** |
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* Choose the language when it is set from content |
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* The language is set either in parse_query with priority 2 or in wp with priority 5 |
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* |
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* @since 1.2 |
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*/ |
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class PLL_Choose_Lang_Content extends PLL_Choose_lang { |
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|
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/** |
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* defers the language choice to the 'wp' action (when the content is known) |
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* |
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* @since 1.8 |
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*/ |
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public function init() { |
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parent::init(); |
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|
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if ( ! did_action( 'pll_language_defined' ) ) { |
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// set the languages from content |
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add_action( 'wp', array( $this, 'wp' ), 5 ); // priority 5 for post types and taxonomies registered in wp hook with default priority |
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|
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// if no language found, choose the preferred one |
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add_filter( 'pll_get_current_language', array( $this, 'pll_get_current_language' ) ); |
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} |
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} |
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|
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/** |
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* overwrites parent::set_language to remove the 'wp' action if the language is set before |
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* |
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* @since 1.2 |
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* |
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* @param object $curlang current language |
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*/ |
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protected function set_language( $curlang ) { |
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parent::set_language( $curlang ); |
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remove_action( 'wp', array( $this, 'wp' ), 5 ); // won't attempt to set the language a 2nd time |
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} |
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|
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/** |
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* returns the language based on the queried content |
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* |
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* @since 1.2 |
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* |
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* @return object|bool detected language, false if none was found |
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*/ |
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protected function get_language_from_content() { |
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// no language set for 404 |
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if ( is_404() || ( is_attachment() && ! $this->options['media_support'] ) ) { |
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return $this->get_preferred_language(); |
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} |
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|
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if ( $var = get_query_var( 'lang' ) ) { |
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$lang = explode( ',', $var ); |
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$lang = $this->model->get_language( reset( $lang ) ); // choose the first queried language |
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} |
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|
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elseif ( ( is_single() || is_page() || ( is_attachment() && $this->options['media_support'] ) ) && ( ( $var = get_queried_object_id() ) || ( $var = get_query_var( 'p' ) ) || ( $var = get_query_var( 'page_id' ) ) || ( $var = get_query_var( 'attachment_id' ) ) ) ) { |
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$lang = $this->model->post->get_language( $var ); |
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} |
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|
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else { |
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foreach ( $this->model->get_translated_taxonomies() as $taxonomy ) { |
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if ( $var = get_query_var( get_taxonomy( $taxonomy )->query_var ) ) { |
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$lang = $this->model->term->get_language( $var, $taxonomy ); |
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} |
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} |
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} |
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|
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/** |
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* Filter the language before it is set from the content |
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* |
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* @since 0.9 |
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* |
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* @param bool|object $lang language object or false if none was found |
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*/ |
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return apply_filters( 'pll_get_current_language', isset( $lang ) ? $lang : false ); |
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} |
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|
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/** |
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* sets the language for home page |
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* add the lang query var when querying archives with no language code |
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* |
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* @since 1.2 |
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* |
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* @param object $query instance of WP_Query |
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*/ |
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public function parse_main_query( $query ) { |
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if ( $query !== $GLOBALS['wp_the_query'] ) { |
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return; |
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} |
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|
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$qv = $query->query_vars; |
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|
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// homepage is requested, let's set the language |
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// take care to avoid posts page for which is_home = 1 |
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if ( empty( $query->query ) && ( is_home() || is_page() ) ) { |
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$this->home_language(); |
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$this->home_requested(); |
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} |
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|
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parent::parse_main_query( $query ); |
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|
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$is_archive = ( count( $query->query ) == 1 && ! empty( $qv['paged'] ) ) || |
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$query->is_date || |
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$query->is_author || |
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( ! empty( $qv['post_type'] ) && $query->is_post_type_archive && $this->model->is_translated_post_type( $qv['post_type'] ) ); |
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|
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// sets the language in case we hide the default language |
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// use $query->query['s'] as is_search is not set when search is empty |
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// http://wordpress.org/support/topic/search-for-empty-string-in-default-language |
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if ( $this->options['hide_default'] && ! isset( $qv['lang'] ) && ( $is_archive || isset( $query->query['s'] ) || ( count( $query->query ) == 1 && ! empty( $qv['feed'] ) ) ) ) { |
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$this->set_language( $this->model->get_language( $this->options['default_lang'] ) ); |
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$this->set_curlang_in_query( $query ); |
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} |
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} |
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|
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/** |
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* sets the language from content |
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* |
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* @since 1.2 |
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*/ |
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public function wp() { |
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// nothing to do if the language has already been set ( although normally the filter has been removed ) |
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if ( ! $this->curlang && $curlang = $this->get_language_from_content() ) { |
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parent::set_language( $curlang ); |
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} |
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} |
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|
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/** |
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* if no language found by get_language_from_content, return the preferred one |
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* |
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* @since 0.9 |
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* |
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* @param object|bool $lang Language found in get_language_from_content |
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* @return object Language |
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*/ |
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public function pll_get_current_language( $lang ) { |
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return ! $lang ? $this->get_preferred_language() : $lang; |
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} |
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} |
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