classes/pluginhost.php

   1 <?php
   2 class PluginHost {
   3         private $link;
   4         private $hooks = array();
   5         private $plugins = array();
   6         private $handlers = array();
   7         private $commands = array();
   8
   9         const HOOK_ARTICLE_BUTTON = 1;
  10         const HOOK_ARTICLE_FILTER = 2;
  11         const HOOK_PREFS_TAB = 3;
  12         const HOOK_PREFS_SECTION = 4;
  13         const HOOK_PREFS_TABS = 5;
  14         const HOOK_FEED_PARSED = 6;
  15         const HOOK_UPDATE_TASK = 7;
  16
  17         function __construct($link) {
  18                 $this->link = $link;
  19         }
  20
  21         private function register_plugin($name, $plugin) {
  22                 //array_push($this->plugins, $plugin);
  23                 $this->plugins[$name] = $plugin;
  24         }
  25
  26         function get_link() {
  27                 return $this->link;
  28         }
  29
  30         function get_plugins() {
  31                 return $this->plugins;
  32         }
  33
  34         function get_plugin($name) {
  35                 return $this->plugins[$name];
  36         }
  37
  38         function run_hooks($type, $method, $args) {
  39                 foreach ($this->get_hooks($type) as $hook) {
  40                         $hook->$method($args);
  41                 }
  42         }
  43
  44         function add_hook($type, $sender) {
  45                 if (!is_array($this->hooks[$type])) {
  46                         $this->hooks[$type] = array();
  47                 }
  48
  49                 array_push($this->hooks[$type], $sender);
  50         }
  51
  52         function del_hook($type, $sender) {
  53                 if (is_array($this->hooks[$type])) {
  54                         $key = array_Search($this->hooks[$type], $sender);
  55                         if ($key !== FALSE) {
  56                                 unset($this->hooks[$type][$key]);
  57                         }
  58                 }
  59         }
  60
  61         function get_hooks($type) {
  62                 if (isset($this->hooks[$type])) {
  63                         return $this->hooks[$type];
  64                 } else {
  65                         return array();
  66                 }
  67         }
  68         function load_all() {
  69                 $plugins = array_map("basename", glob("plugins/*"));
  70                 $this->load(join(",", $plugins));
  71         }
  72
  73         function load($classlist) {
  74                 $plugins = explode(",", $classlist);
  75
  76                 foreach ($plugins as $class) {
  77                         $class = trim($class);
  78                         $class_file = strtolower(basename($class));
  79                         $file = dirname(__FILE__)."/../plugins/$class_file/$class_file.php";
  80
  81                         if (file_exists($file)) require_once $file;
  82
  83                         if (class_exists($class) && is_subclass_of($class, "Plugin")) {
  84                                 $plugin = new $class($this);
  85
  86                                 $this->register_plugin($class, $plugin);
  87                         }
  88                 }
  89         }
  90
  91         function add_handler($handler, $method, $sender) {
  92                 $handler = str_replace("-", "_", strtolower($handler));
  93                 $method = strtolower($method);
  94
  95                 if (!is_array($this->handlers[$handler])) {
  96                         $this->handlers[$handler] = array();
  97                 }
  98
  99                 $this->handlers[$handler][$method] = $sender;
 100         }
 101
 102         function del_handler($handler, $method) {
 103                 $handler = str_replace("-", "_", strtolower($handler));
 104                 $method = strtolower($method);
 105
 106                 unset($this->handlers[$handler][$method]);
 107         }
 108
 109         function lookup_handler($handler, $method) {
 110                 $handler = str_replace("-", "_", strtolower($handler));
 111                 $method = strtolower($method);
 112
 113                 if (is_array($this->handlers[$handler])) {
 114                         if (isset($this->handlers[$handler]["*"])) {
 115                                 return $this->handlers[$handler]["*"];
 116                         } else {
 117                                 return $this->handlers[$handler][$method];
 118                         }
 119                 }
 120
 121                 return false;
 122         }
 123
 124         function add_command($command, $description, $sender) {
 125                 $command = "-" . str_replace("-", "_", strtolower($command));
 126
 127                 $this->commands[$command] = array("description" => $description,
 128                         "class" => $sender);
 129         }
 130
 131         function del_command($command) {
 132                 $command = "-" . strtolower($command);
 133
 134                 unset($this->commands[$command]);
 135         }
 136
 137         function lookup_command($command) {
 138                 $command = "-" . strtolower($command);
 139
 140                 if (is_array($this->commands[$command])) {
 141                         return $this->commands[$command]["class"];
 142                 } else {
 143                         return false;
 144                 }
 145
 146                 return false;
 147         }
 148
 149         function get_commands() {
 150                 return $this->commands;
 151         }
 152
 153         function run_commands($args) {
 154                 foreach ($this->get_commands() as $command => $data) {
 155                         if (in_array($command, $args)) {
 156                                 $command = str_replace("-", "", $command);
 157                                 $data["class"]->$command($args);
 158                         }
 159                 }
 160         }
 161
 162 }
 163 ?>