Subversion-Projekte lars-tiefland.php_share

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Revision Autor Zeilennr. Zeile
1 lars 1 
<?php
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class Dispatcher {
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  var $_callbacks;
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  function Dispatcher() {
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    $this->_callbacks = array();
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  }
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  /**
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   * @param String $type name of the event to dispatch
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   */
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  function add_event($type) {
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    $this->_callbacks[$type] = array();
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  }
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  function add_observer($type, $callback) {
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    $this->_check_event_type($type);
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    $this->_callbacks[$type][] = $callback;
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  }
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  function fire($type, $params) {
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    $this->_check_event_type($type);
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    foreach ($this->_callbacks[$type] as $callback) {
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      call_user_func($callback, $params);
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    };
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  }
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  function _check_event_type($type) {
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    if (!isset($this->_callbacks[$type])) {
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      die(sprintf("Invalid event type: %s", $type));
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    };
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  }
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}
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?>