inc/plugins.php

   1 <?php
   2
   3 $plugin_actions = array(); // action -> plugin object
   4 $plugin_hooks = array();
   5
   6 function call_hooks($type) {
   7         global $plugin_hooks;
   8         foreach ($plugin_hooks as $type => $classes) {
   9                 foreach ($classes as $class) {
  10                         $class->hook($type);
  11                 }
  12         }
  13 }
  14
  15 /**
  16  * Base class plugins should extend. This defines the public, hopefully
  17  * somewhat static API plugins should be able to rely on.
  18  *
  19  * Plugins go to plugins/name/main.php and must contain a NamePlugin class.
  20  */
  21 class VGPlugin
  22 {
  23         /**
  24          * Actions, hooks and other things must be initialized/registered here.
  25          */
  26         function __construct() {
  27
  28         }
  29
  30         /**
  31          * Called when a registered action is triggered.
  32          */
  33         function action($action) {}
  34
  35         /**
  36          * Called when a registered hook is triggered.
  37          */
  38         function hook($type) {}
  39
  40         /**
  41          * Can be used to output xhtml.
  42          */
  43         function output($xhtml) {
  44                 echo($xhtml);
  45         }
  46
  47         /**
  48          * Registers the given action for this plugin.
  49          */
  50         function register_action($action) {
  51                 global $plugin_actions;
  52                 $plugin_actions[$action] = $this;
  53         }
  54
  55         function register_hook($type) {
  56                 global $plugin_hooks;
  57                 $plugin_hooks[$type][] = $this;
  58         }
  59 }
  60