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304 lines
10 KiB
PHP
304 lines
10 KiB
PHP
<?php
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/**
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* A language object is made of two terms in 'language' and 'term_language' taxonomies
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* manipulating only one object per language instead of two terms should make things easier
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*
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* Properties:
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* term_id => id of term in 'language' taxonomy
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* name => language name. Ex: English
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* slug => language code used in url. Ex: en
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* term_group => order of the language when displayed in a list of languages
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* term_taxonomy_id => term taxonomy id in 'language' taxonomy
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* taxonomy => 'language'
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* description => language locale for backward compatibility
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* parent => 0 / not used
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* count => number of posts and pages in that language
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* tl_term_id => id of the term in 'term_language' taxonomy
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* tl_term_taxonomy_id => term taxonomy id in 'term_language' taxonomy
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* tl_count => number of terms in that language ( not used by Polylang )
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* locale => WordPress language locale. Ex: en_US
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* is_rtl => 1 if the language is rtl
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* w3c => W3C locale
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* flag_code => code of the flag
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* flag_url => url of the flag
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* flag => html img of the flag
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* custom_flag_url => url of the custom flag if exists, internal use only, moves to flag_url on frontend
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* custom_flag => html img of the custom flag if exists, internal use only, moves to flag on frontend
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* home_url => home url in this language
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* search_url => home url to use in search forms
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* host => host of this language
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* mo_id => id of the post storing strings translations
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* page_on_front => id of the page on front in this language ( set from pll_languages_list filter )
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* page_for_posts => id of the page for posts in this language ( set from pll_languages_list filter )
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*
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* @since 1.2
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*/
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class PLL_Language {
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public $term_id, $name, $slug, $term_group, $term_taxonomy_id, $taxonomy, $description, $parent, $count;
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public $tl_term_id, $tl_term_taxonomy_id, $tl_count;
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public $locale, $is_rtl;
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public $w3c, $facebook;
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public $flag_url, $flag;
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public $home_url, $search_url;
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public $host, $mo_id;
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public $page_on_front, $page_for_posts;
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/**
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* Constructor: builds a language object given its two corresponding terms in language and term_language taxonomies
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*
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* @since 1.2
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*
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* @param object|array $language 'language' term or language object properties stored as an array
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* @param object $term_language Corresponding 'term_language' term
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*/
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public function __construct( $language, $term_language = null ) {
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// Build the object from all properties stored as an array
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if ( empty( $term_language ) ) {
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foreach ( $language as $prop => $value ) {
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$this->$prop = $value;
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}
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}
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// Build the object from taxonomies
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else {
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foreach ( $language as $prop => $value ) {
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$this->$prop = in_array( $prop, array( 'term_id', 'term_taxonomy_id', 'count' ) ) ? (int) $language->$prop : $language->$prop;
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}
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$this->tl_term_id = (int) $term_language->term_id;
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$this->tl_term_taxonomy_id = (int) $term_language->term_taxonomy_id;
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$this->tl_count = (int) $term_language->count;
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// The description field can contain any property
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// Backward compatibility for is_rtl
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$description = maybe_unserialize( $language->description );
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foreach ( $description as $prop => $value ) {
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'rtl' == $prop ? $this->is_rtl = $value : $this->$prop = $value;
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}
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$this->description = &$this->locale; // Backward compatibility with Polylang < 1.2
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$this->mo_id = PLL_MO::get_id( $this );
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$languages = include PLL_SETTINGS_INC . '/languages.php';
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$this->w3c = isset( $languages[ $this->locale ]['w3c'] ) ? $languages[ $this->locale ]['w3c'] : str_replace( '_', '-', $this->locale );
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if ( isset( $languages[ $this->locale ]['facebook'] ) ) {
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$this->facebook = $languages[ $this->locale ]['facebook'];
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}
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}
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}
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/**
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* Get the flag informations
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* 'url' => Flag url
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* 'src' => Optional, src attribute value if different of the url, for example if base64 encoded
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* 'width' => Optional, flag width in pixels
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* 'height' => Optional, flag height in pixels
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*
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* @since 2.6
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*
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* @param string $code Flag code.
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* @return array Flag informations.
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*/
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public static function get_flag_informations( $code ) {
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$flag = array( 'url' => '' );
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// Polylang builtin flags
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if ( ! empty( $code ) && file_exists( POLYLANG_DIR . ( $file = '/flags/' . $code . '.png' ) ) ) {
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$flag['url'] = $_url = plugins_url( $file, POLYLANG_FILE );
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}
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/**
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* Filter flag informations
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* 'url' => Flag url
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* 'src' => Optional, src attribute value if different of the url, for example if base64 encoded
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* 'width' => Optional, flag width in pixels
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* 'height' => Optional, flag height in pixels
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*
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* @since 2.4
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*
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* @param array $flag Information about the flag
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* @param string $code Flag code
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*/
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$flag = apply_filters( 'pll_flag', $flag, $code );
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if ( empty( $flag['src'] ) ) {
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// If using predefined flags and base64 encoded flags are preferred
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if ( isset( $_url ) && $flag['url'] === $_url && ( ! defined( 'PLL_ENCODED_FLAGS' ) || PLL_ENCODED_FLAGS ) ) {
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list( $flag['width'], $flag['height'] ) = getimagesize( POLYLANG_DIR . $file );
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$file_contents = file_get_contents( POLYLANG_DIR . $file ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents
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$flag['src'] = 'data:image/png;base64,' . base64_encode( $file_contents ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode
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} else {
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$flag['src'] = esc_url( set_url_scheme( $flag['url'], 'relative' ) );
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}
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}
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$flag['url'] = esc_url_raw( $flag['url'] );
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return $flag;
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}
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/**
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* Sets flag_url and flag properties
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*
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* @since 1.2
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*/
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public function set_flag() {
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$flags = array( 'flag' => self::get_flag_informations( $this->flag_code ) );
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// Custom flags ?
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$directories = array(
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PLL_LOCAL_DIR,
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get_stylesheet_directory() . '/polylang',
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get_template_directory() . '/polylang',
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);
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foreach ( $directories as $dir ) {
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if ( file_exists( $file = "{$dir}/{$this->locale}.png" ) || file_exists( $file = "{$dir}/{$this->locale}.jpg" ) || file_exists( $file = "{$dir}/{$this->locale}.svg" ) ) {
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$flags['custom_flag']['url'] = content_url( '/' . str_replace( WP_CONTENT_DIR, '', $file ) );
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break;
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}
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}
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/**
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* Filter the custom flag informations
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* 'url' => Flag url
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* 'src' => Optional, src attribute value if different of the url, for example if base64 encoded
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* 'width' => Optional, flag width in pixels
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* 'height' => Optional, flag height in pixels
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*
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* @since 2.4
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*
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* @param array $flag Information about the custom flag
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* @param string $code Flag code
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*/
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$flags['custom_flag'] = apply_filters( 'pll_custom_flag', empty( $flags['custom_flag'] ) ? null : $flags['custom_flag'], $this->flag_code );
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if ( ! empty( $flags['custom_flag']['url'] ) ) {
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if ( empty( $flags['custom_flag']['src'] ) ) {
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$flags['custom_flag']['src'] = esc_url( set_url_scheme( $flags['custom_flag']['url'], 'relative' ) );
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}
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$flags['custom_flag']['url'] = esc_url_raw( $flags['custom_flag']['url'] );
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} else {
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unset( $flags['custom_flag'] );
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}
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/**
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* Filter the flag title attribute
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* Defaults to the language name
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*
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* @since 0.7
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*
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* @param string $title the flag title attribute
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* @param string $slug the language code
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* @param string $locale the language locale
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*/
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$title = apply_filters( 'pll_flag_title', $this->name, $this->slug, $this->locale );
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foreach ( $flags as $key => $flag ) {
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$this->{$key . '_url'} = empty( $flag['url'] ) ? '' : $flag['url'];
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/**
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* Filter the html markup of a flag
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*
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* @since 1.0.2
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*
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* @param string $flag html markup of the flag or empty string
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* @param string $slug language code
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*/
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$this->{$key} = apply_filters(
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'pll_get_flag',
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self::get_flag_html( $flag, $title, $this->name ),
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$this->slug
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);
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}
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}
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/**
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* Get HTML code for flag
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*
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* @since 2.7
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*
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* @param array $flag flag properties: src, width and height
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* @param string $title optional title attribute
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* @param string $alt optional alt attribute
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*/
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public static function get_flag_html( $flag, $title = '', $alt = '' ) {
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return empty( $flag['src'] ) ? '' : sprintf(
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'<img src="%s"%s%s%s%s />',
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$flag['src'],
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empty( $title ) ? '' : sprintf( ' title="%s"', esc_attr( $title ) ),
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empty( $alt ) ? '' : sprintf( ' alt="%s"', esc_attr( $alt ) ),
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empty( $flag['width'] ) ? '' : sprintf( ' width="%s"', (int) $flag['width'] ),
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empty( $flag['height'] ) ? '' : sprintf( ' height="%s"', (int) $flag['height'] )
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);
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}
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/**
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* Replace flag by custom flag
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* Takes care of url scheme
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*
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* @since 1.7
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*/
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public function set_custom_flag() {
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// Overwrite with custom flags on frontend only
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if ( ! empty( $this->custom_flag ) ) {
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$this->flag = $this->custom_flag;
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$this->flag_url = $this->custom_flag_url;
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unset( $this->custom_flag, $this->custom_flag_url ); // hide this
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}
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// Set url scheme, also for default flags
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$this->flag_url = set_url_scheme( $this->flag_url );
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}
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/**
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* Updates post and term count
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*
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* @since 1.2
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*/
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public function update_count() {
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wp_update_term_count( $this->term_taxonomy_id, 'language' ); // posts count
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wp_update_term_count( $this->tl_term_taxonomy_id, 'term_language' ); // terms count
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}
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/**
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* Set home_url and search_url properties
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*
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* @since 1.3
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*
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* @param string $search_url
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* @param string $home_url
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*/
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public function set_home_url( $search_url, $home_url ) {
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$this->search_url = $search_url;
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$this->home_url = $home_url;
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}
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/**
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* Set home_url scheme
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* this can't be cached across pages
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*
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* @since 1.6.4
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*/
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public function set_home_url_scheme() {
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$this->home_url = set_url_scheme( $this->home_url );
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$this->search_url = set_url_scheme( $this->search_url );
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}
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/**
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* Returns the language locale
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* Converts WP locales to W3C valid locales for display
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*
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* @since 1.8
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*
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* @param string $filter either 'display' or 'raw', defaults to raw
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* @return string
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*/
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public function get_locale( $filter = 'raw' ) {
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return 'display' === $filter ? $this->w3c : $this->locale;
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}
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}
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