classes/pluginhost.php

   1 <?php
   2 class PluginHost {
   3         private $link;
   4         private $hooks = array();
   5         private $plugins = array();
   6         private $handlers = array();
   7
   8         const HOOK_ARTICLE_BUTTON = 1;
   9         const HOOK_ARTICLE_FILTER = 2;
  10         const HOOK_PREFS_TAB = 3;
  11         const HOOK_PREFS_SECTION = 4;
  12         const HOOK_PREFS_TABS = 5;
  13
  14         function __construct($link) {
  15                 $this->link = $link;
  16         }
  17
  18         private function register_plugin($name, $plugin) {
  19                 //array_push($this->plugins, $plugin);
  20                 $this->plugins[$name] = $plugin;
  21         }
  22
  23         function get_link() {
  24                 return $this->link;
  25         }
  26
  27         function get_plugins() {
  28                 return $this->plugins;
  29         }
  30
  31         function get_plugin($name) {
  32                 return $this->plugins[$name];
  33         }
  34
  35         function run_hooks($type, $method, $args) {
  36                 foreach ($this->get_hooks($type) as $hook) {
  37                         $hook->$method($args);
  38                 }
  39         }
  40
  41         function add_hook($type, $sender) {
  42                 if (!is_array($this->hooks[$type])) {
  43                         $this->hooks[$type] = array();
  44                 }
  45
  46                 array_push($this->hooks[$type], $sender);
  47         }
  48
  49         function del_hook($type, $sender) {
  50                 if (is_array($this->hooks[$type])) {
  51                         $key = array_Search($this->hooks[$type], $sender);
  52                         if ($key !== FALSE) {
  53                                 unset($this->hooks[$type][$key]);
  54                         }
  55                 }
  56         }
  57
  58         function get_hooks($type) {
  59                 return $this->hooks[$type];
  60         }
  61
  62         function load($classlist) {
  63                 $plugins = explode(",", $classlist);
  64
  65                 foreach ($plugins as $class) {
  66                         $class = trim($class);
  67                         $class_file = strtolower(basename($class));
  68                         $file = dirname(__FILE__)."/../plugins/$class_file/$class_file.php";
  69
  70                         if (file_exists($file)) require_once $file;
  71
  72                         if (class_exists($class) && is_subclass_of($class, "Plugin")) {
  73                                 $plugin = new $class($this);
  74
  75                                 $this->register_plugin($class, $plugin);
  76                         }
  77                 }
  78         }
  79
  80         function add_handler($handler, $method, $sender) {
  81                 $handler = str_replace("-", "_", strtolower($handler));
  82                 $method = strtolower($method);
  83
  84                 if (!is_array($this->handlers[$handler])) {
  85                         $this->handlers[$handler] = array();
  86                 }
  87
  88                 $this->handlers[$handler][$method] = $sender;
  89         }
  90
  91         function del_handler($handler, $method) {
  92                 $handler = str_replace("-", "_", strtolower($handler));
  93                 $method = strtolower($method);
  94
  95                 unset($this->handlers[$handler][$method]);
  96         }
  97
  98         function lookup_handler($handler, $method) {
  99                 $handler = str_replace("-", "_", strtolower($handler));
 100                 $method = strtolower($method);
 101
 102                 if (is_array($this->handlers[$handler])) {
 103                         if (isset($this->handlers[$handler]["*"])) {
 104                                 return $this->handlers[$handler]["*"];
 105                         } else {
 106                                 return $this->handlers[$handler][$method];
 107                         }
 108                 }
 109
 110                 return false;
 111         }
 112 }
 113 ?>