JSONMessage.inc.php

<?php
 
class JSONMessage {
   var $_status;
 
   var $_content;
 
   var $_elementId;
 
   var $_events;
 
   var $_additionalAttributes;
 
   function __construct($status = true, $content = '', $elementId = '0', $additionalAttributes = null) {
      // Set internal state.
      $this->setStatus($status);
      $this->setContent($content);
      $this->setElementId($elementId);
      if (isset($additionalAttributes)) {
         $this->setAdditionalAttributes($additionalAttributes);
      }
   }
 
   function getStatus () {
      return $this->_status;
   }
 
   function setStatus($status) {
      assert(is_bool($status));
      $this->_status = $status;
   }
 
   function getContent() {
      return $this->_content;
   }
 
   function setContent($content) {
      $this->_content = $content;
   }
 
   function getElementId() {
      return $this->_elementId;
   }
 
   function setElementId($elementId) {
      assert(is_string($elementId) || is_numeric($elementId));
      $this->_elementId = $elementId;
   }
 
   function setEvent($eventName, $eventData = null) {
      assert(is_string($eventName));
 
      // Construct the even as an associative array.
      $event = array('name' => $eventName);
      if(!is_null($eventData)) $event['data'] = $eventData;
 
      $this->_events[] = $event;
   }
 
   function setGlobalEvent($eventName, $eventData = array()) {
      assert(is_array($eventData));
      $eventData['isGlobalEvent'] = true;
      $this->setEvent($eventName, $eventData);
   }
 
   function getEvents() {
      return $this->_events;
   }
 
   function getAdditionalAttributes() {
      return $this->_additionalAttributes;
   }
 
   function setAdditionalAttributes($additionalAttributes) {
      assert(is_array($additionalAttributes));
      $this->_additionalAttributes = $additionalAttributes;
   }
 
   function getString() {
      // Construct an associative array that contains all information we require.
      $jsonObject = array(
         'status' => $this->getStatus(),
         'content' => $this->getContent(),
         'elementId' => $this->getElementId(),
         'events' => $this->getEvents(),
      );
      if(is_array($this->getAdditionalAttributes())) {
         foreach($this->getAdditionalAttributes() as $key => $value) {
            $jsonObject[$key] = $value;
         }
      }
 
      // Encode the object.
      $json = json_encode($jsonObject);
 
      if ($json === false) {
         error_log(json_last_error_msg());
      }
 
      return $json;
   }
}