Viewing file:  frontend-filters-search.php (4.18 KB) -rw-r--r--
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<?php
/**
* filters search forms when using permalinks
*
* @since 1.2
*/
class PLL_Frontend_Filters_Search {
public $links_model, $curlang;
/**
* constructor
*
* @since 1.2
*
* @param object $polylang
*/
public function __construct( &$polylang ) {
$this->links_model = &$polylang->links_model;
$this->curlang = &$polylang->curlang;
// adds the language information in the search form
// low priority in case the search form is created using the same filter as described in http://codex.wordpress.org/Function_Reference/get_search_form
add_filter( 'get_search_form', array( $this, 'get_search_form' ), 99 );
// adds the language information in admin bar search form
add_action( 'add_admin_bar_menus', array( $this, 'add_admin_bar_menus' ) );
// adds javascript at the end of the document
// was used for WP < 3.6. kept just in case
if ( defined( 'PLL_SEARCH_FORM_JS' ) && PLL_SEARCH_FORM_JS ) {
add_action( 'wp_footer', array( $this, 'wp_print_footer_scripts' ) );
}
}
/**
* adds the language information in the search form
* does not work if searchform.php ( prior to WP 3.6 ) is used or if the search form is hardcoded in another template file
*
* @since 0.1
*
* @param string $form search form
* @return string modified search form
*/
public function get_search_form( $form ) {
if ( $form ) {
if ( $this->links_model->using_permalinks ) {
// take care to modify only the url in the <form> tag
preg_match( '#<form.+>#', $form, $matches );
$old = reset( $matches );
$new = preg_replace( '#' . esc_url( $this->links_model->home ) . '\/?#', esc_url( $this->curlang->search_url ), $old );
$form = str_replace( $old, $new, $form );
}
else {
$form = str_replace( '</form>', '<input type="hidden" name="lang" value="'.esc_attr( $this->curlang->slug ).'" /></form>', $form );
}
}
return $form;
}
/**
* adds the language information in admin bar search form
*
* @since 1.2
*/
function add_admin_bar_menus() {
remove_action( 'admin_bar_menu', 'wp_admin_bar_search_menu', 4 );
add_action( 'admin_bar_menu', array( $this, 'admin_bar_search_menu' ), 4 );
}
/**
* rewrites the admin bar search form to pass our get_search form filter. See #21342
* code base is WP 4.3.1
*
* @since 0.9
*
* @param object $wp_admin_bar
*/
public function admin_bar_search_menu( $wp_admin_bar ) {
$form = '<form action="' . esc_url( home_url( '/' ) ) . '" method="get" id="adminbarsearch">';
$form .= '<input class="adminbar-input" name="s" id="adminbar-search" type="text" value="" maxlength="150" />';
$form .= '<label for="adminbar-search" class="screen-reader-text">' . esc_html__( 'Search' ) . '</label>';
$form .= '<input type="submit" class="adminbar-button" value="' . esc_attr__( 'Search' ) . '"/>';
$form .= '</form>';
$wp_admin_bar->add_menu( array(
'parent' => 'top-secondary',
'id' => 'search',
'title' => $this->get_search_form( $form ), // pass the get_search_form filter
'meta' => array( 'class' => 'admin-bar-search', 'tabindex' => -1 ),
) );
}
/**
* allows modifying the search form if it does not pass get_search_form
*
* @since 0.1
*/
public function wp_print_footer_scripts() {
// don't use directly e[0] just in case there is somewhere else an element named 's'
// check before if the hidden input has not already been introduced by get_search_form ( FIXME: is there a way to improve this ) ?
// thanks to AndyDeGroo for improving the code for compatility with old browsers
// http://wordpress.org/support/topic/development-of-polylang-version-08?replies=6#post-2645559
$lang = esc_js( $this->curlang->slug );
$js = "//<![CDATA[
e = document.getElementsByName( 's' );
for ( i = 0; i < e.length; i++ ) {
if ( e[i].tagName.toUpperCase() == 'INPUT' ) {
s = e[i].parentNode.parentNode.children;
l = 0;
for ( j = 0; j < s.length; j++ ) {
if ( s[j].name == 'lang' ) {
l = 1;
}
}
if ( l == 0 ) {
var ih = document.createElement( 'input' );
ih.type = 'hidden';
ih.name = 'lang';
ih.value = '$lang';
e[i].parentNode.appendChild( ih );
}
}
}
//]]>";
echo '<script type="text/javascript">' . $js . '</script>';
}
}
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