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<?php |
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|
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namespace Boxzilla; |
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|
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class BoxLoader { |
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|
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|
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/** |
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* @var Plugin |
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*/ |
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private $plugin; |
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|
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/** |
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* @var array |
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*/ |
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private $box_ids_to_load = array(); |
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|
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/** |
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* @var array |
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*/ |
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protected $options; |
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|
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/** |
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* Constructor |
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* |
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* @param Plugin $plugin |
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* @param array $options |
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*/ |
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public function __construct( Plugin $plugin, array $options ) { |
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$this->plugin = $plugin; |
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$this->options = $options; |
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} |
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|
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/** |
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* Initializes the plugin, runs on `wp` hook. |
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*/ |
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public function init() { |
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$this->box_ids_to_load = $this->filter_boxes(); |
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|
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// Only add other hooks if necessary |
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add_action('wp_head', array($this, 'print_preload_js')); |
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if ( count( $this->box_ids_to_load ) > 0 ) { |
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add_action( 'wp_footer', array( $this, 'print_boxes_content' ), 1 ); |
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add_action( 'wp_enqueue_scripts', array( $this, 'load_assets' ), 90 ); |
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} |
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} |
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|
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/** |
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* Prints the preload API so that the Boxzilla JS API can be used before Boxzilla itself is loaded |
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* This allows us to defer the Boxzilla script itself. |
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*/ |
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public function print_preload_js() { |
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echo '<script>'; |
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echo file_get_contents(BOXZILLA_DIR . '/assets/js/preload.js'); |
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echo '</script>'; |
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} |
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|
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/** |
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* Get global rules for all boxes |
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* |
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* @return array |
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*/ |
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protected function get_filter_rules() { |
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$rules = get_option( 'boxzilla_rules', array() ); |
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return is_array($rules) ? $rules : array(); |
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} |
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|
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|
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/** |
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* Match a string against an array of patterns, glob-style. |
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* |
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* @param string $string |
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* @param array $patterns |
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* @param boolean $contains |
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* @return boolean |
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*/ |
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protected function match_patterns( $string, array $patterns, $contains = false ) { |
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$string = strtolower( $string ); |
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|
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foreach ( $patterns as $pattern ) { |
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$pattern = rtrim( $pattern, '/' ); |
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$pattern = strtolower( $pattern ); |
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|
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if ( $contains ) { |
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// contains means we should do a simple occurrence check |
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// does not support wildcards |
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$match = strpos( $string, $pattern ) !== false; |
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} elseif ( function_exists( 'fnmatch' ) ) { |
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$match = fnmatch( $pattern, $string ); |
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} else { |
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$match = ( $pattern === $string ); |
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} |
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|
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if ( $match ) { |
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return true; |
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} |
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} |
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|
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return false; |
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} |
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|
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/** |
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* @return string |
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*/ |
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protected function get_request_url() { |
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return rtrim( $_SERVER['REQUEST_URI'], '/' ); |
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} |
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|
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/** |
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* Check if this rule passes (conditional matches expected value) |
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* |
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* @param string $condition |
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* @param string $value |
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* @param boolean $qualifier |
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* |
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* @return bool |
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*/ |
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protected function match_rule( $condition, $value, $qualifier = true ) { |
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$matched = false; |
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|
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// cast value to array & trim whitespace or excess comma's |
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$values = array_map( 'trim', explode( ',', rtrim( trim( $value ), ',' ) ) ); |
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|
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switch ( $condition ) { |
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case 'everywhere': |
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$matched = true; |
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break; |
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|
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case 'is_url': |
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$url = $this->get_request_url(); |
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$matched = $this->match_patterns( $url, $values, $qualifier === 'contains' || $qualifier === 'not_contains' ); |
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break; |
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|
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case 'is_referer': |
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if ( ! empty( $_SERVER['HTTP_REFERER'] ) ) { |
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$referer = $_SERVER['HTTP_REFERER']; |
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$matched = $this->match_patterns( $referer, $values, $qualifier === 'contains' || $qualifier === 'not_contains' ); |
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} |
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break; |
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|
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case 'is_post_type': |
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$post_type = (string) get_post_type(); |
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$matched = in_array( $post_type, $values, true ); |
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break; |
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|
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case 'is_single': |
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case 'is_post': |
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// convert to empty string if array with just empty string in it |
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$value = ( $values === array( '' ) ) ? '' : $values; |
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$matched = is_single( $value ); |
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break; |
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|
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case 'is_post_in_category': |
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$matched = is_singular() && has_category( $values ); |
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break; |
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|
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case 'is_page': |
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$matched = is_page( $values ); |
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break; |
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|
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case 'is_post_with_tag': |
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$matched = is_singular() && has_tag( $values ); |
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break; |
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|
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case 'is_user_logged_in': |
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$matched = is_user_logged_in(); |
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break; |
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} |
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|
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/** |
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* Filters whether a given box rule matches the condition and expected value. |
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* |
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* The dynamic portion of the hook, `$condition`, refers to the condition being matched. |
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* |
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* @param boolean $matched |
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* @param array $values |
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*/ |
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$matched = apply_filters( 'boxzilla_box_rule_matches_' . $condition, $matched, $values ); |
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|
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// if qualifier is set to false, we need to reverse this value here. |
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if ( ! $qualifier || $qualifier === 'not_contains' ) { |
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$matched = ! $matched; |
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} |
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|
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return $matched; |
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} |
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|
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/** |
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* Checks which boxes should be loaded for this request. |
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* |
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* @return array |
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*/ |
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private function filter_boxes() { |
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$box_ids_to_load = array(); |
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$rules = $this->get_filter_rules(); |
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|
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foreach ( $rules as $box_id => $box_rules ) { |
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$matched = false; |
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$comparision = isset( $box_rules['comparision'] ) ? $box_rules['comparision'] : 'any'; |
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|
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// loop through all rules for all boxes |
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foreach ( $box_rules as $rule ) { |
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|
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// skip faulty values (and comparision rule) |
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if ( empty( $rule['condition'] ) ) { |
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continue; |
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} |
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|
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$qualifier = isset( $rule['qualifier'] ) ? $rule['qualifier'] : true; |
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$matched = $this->match_rule( $rule['condition'], $rule['value'], $qualifier ); |
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|
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// break out of loop if we've already matched |
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if ( $comparision === 'any' && $matched ) { |
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break; |
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} |
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|
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// no need to continue if this rule didn't match |
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if ( $comparision === 'all' && ! $matched ) { |
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break; |
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} |
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} |
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|
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// value of $matched at this point determines whether box should be loaded |
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$load_box = $matched; |
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|
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/** |
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* Filters whether a box should be loaded into the page HTML. |
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* |
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* The dynamic portion of the hook, `$box_id`, refers to the ID of the box. Return true if you want to output the box. |
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* |
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* @param boolean $load_box |
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*/ |
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$load_box = apply_filters( 'boxzilla_load_box_' . $box_id, $load_box ); |
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|
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/** |
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* Filters whether a box should be loaded into the page HTML. |
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* |
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* @param boolean $load_box |
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* @param int $box_id |
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*/ |
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$load_box = apply_filters( 'boxzilla_load_box', $load_box, $box_id ); |
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|
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// if matched, box should be loaded on this page |
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if ( $load_box ) { |
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$box_ids_to_load[] = $box_id; |
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} |
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} |
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|
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/** |
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* Filters which boxes should be loaded on this page, expects an array of post ID's. |
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* |
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* @param array $box_ids_to_load |
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*/ |
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return apply_filters( 'boxzilla_load_boxes', $box_ids_to_load ); |
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} |
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|
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/** |
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* Load plugin styles |
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*/ |
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public function load_assets() { |
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wp_enqueue_style( 'boxzilla', $this->plugin->url( '/assets/css/styles.css' ), array(), $this->plugin->version() ); |
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wp_enqueue_script( 'boxzilla', $this->plugin->url( '/assets/js/script.js' ), array(), $this->plugin->version(), array( |
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'strategy' => 'defer', |
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'in_footer' => true, |
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)); |
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|
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// create boxzilla_Global_Options object |
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$plugin_options = $this->options; |
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$boxes = $this->get_matched_boxes(); |
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|
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$data = array( |
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'testMode' => (bool) $plugin_options['test_mode'], |
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'boxes' => (array) array_map( |
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function ( Box $box ) { |
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return $box->get_client_options(); |
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}, |
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$boxes |
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), |
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); |
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|
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wp_localize_script( 'boxzilla', 'boxzilla_options', $data ); |
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|
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do_action( 'boxzilla_load_assets', $this ); |
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} |
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|
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public function print_boxes_content() { |
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$boxes = $this->get_matched_boxes(); |
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if ( empty( $boxes ) ) { |
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return; |
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} |
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|
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echo '<div style="display: none;">'; |
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foreach ( $boxes as $box ) { |
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echo "<div id=\"boxzilla-box-{$box->ID}-content\">", $box->get_content(), "</div>"; |
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} |
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echo '</div>'; |
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} |
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|
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/** |
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* Get an array of Box objects. These are the boxes that will be loaded for the current request. |
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* |
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* @return Box[] |
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*/ |
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public function get_matched_boxes() { |
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static $boxes; |
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|
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if ( is_null( $boxes ) ) { |
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if ( count( $this->box_ids_to_load ) === 0 ) { |
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$boxes = array(); |
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return $boxes; |
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} |
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|
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// query Box posts |
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$q = new \WP_Query(); |
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$posts = $q->query( |
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array( |
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'post_type' => 'boxzilla-box', |
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'post_status' => 'publish', |
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'post__in' => $this->box_ids_to_load, |
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'posts_per_page' => count( $this->box_ids_to_load ), |
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'ignore_sticky_posts' => true, |
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'no_found_rows' => true, |
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) |
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); |
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|
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// create `Box` instances out of \WP_Post instances |
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$boxes = array(); |
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foreach ( $posts as $key => $post ) { |
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$box = new Box( $post ); |
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|
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// skip boxes without any content |
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if ( $box->get_content() === '' ) { |
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continue; |
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} |
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|
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$boxes[ $key ] = $box; |
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} |
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} |
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|
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return $boxes; |
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} |
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} |
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|
