]+>)~i',
array( $this, 'tag_script' ), $buffer
);
if ( !empty( $this->preload_url ) ) {
$preload_html = '';
$buffer = preg_replace( '~]*)*>~Ui',
'\\0' . $preload_html, $buffer, 1 );
add_filter( 'w3tc_lazyload_on_initialized_javascript', array(
$this, 'w3tc_lazyload_on_initialized_javascript' ) );
}
$data['buffer'] = $buffer;
$data['modified'] |= !empty( $this->preload_url );
return $data;
}
public function tag_script( $m ) {
$script_tag = $m[0];
if ( !preg_match( '~]*src=["\']?([^"\'> ]+)["\'> ]~is',
$script_tag, $match ) ) {
return $script_tag;
}
$script_src = $match[1];
$script_src = Util_Environment::url_relative_to_full( $script_src );
if ( !$this->starts_with( $script_src, WP_PLUGIN_URL . '/google-maps-easy/modules/gmap/js/frontend.gmap.js' ) ) {
return $script_tag;
}
$this->preload_url = $script_src;
return '';
}
private function starts_with( $v, $prefix ) {
return substr( $v, 0, strlen( $prefix ) ) == $prefix;
}
public function w3tc_lazyload_on_initialized_javascript() {
return 'window.w3tc_lazyLazy_googlemaps_wpmaps = new LazyLoad({' .
'elements_selector: ".gmp_map_opts",'.
'callback_enter: function(e){' .
// w3tc_load_js function
'function w3tc_load_js(t,n){"use strict";var o=document.getElementsByTagName("script")[0],r=document.createElement("script");return r.src=t,r.async=!0,o.parentNode.insertBefore(r,o),n&&"function"==typeof n&&(r.onload=n),r};' .
'w3tc_load_js("' . esc_url( $this->preload_url ) . '");' .
'}});';
}
}