PHP: fixed site class _default handler

[sql-web.git] / lib / joe / site.lib.php

<?php
/* Generic Site Classes
 * 2007/04/09 Joe Presbrey <presbrey@mit.edu>
 */

class Site {
	function Start() {}
	function Call($MODULE, $METHOD) {
		$nCalls = 0;
		if (file_exists(strtolower('site/'.$MODULE.'.php'))) {
			require_once strtolower('site/'.$MODULE.'.php');
			if (class_exists($MODULE)) {
				$page = new $MODULE($this, $METHOD);
				$page->Start();
				$handlers = $page->get_handlers($METHOD);
				switch ($METHOD) {
					case 'GET':
					case 'get':
						$argv = array_merge($_COOKIE, $_FILES, $_POST, $_GET, isset($_SESSION)?$_SESSION:array()); break;
					case 'POST':
					case 'post':
					default:
						$argv = array_merge($_COOKIE, $_FILES, $_GET, $_POST, isset($_SESSION)?$_SESSION:array()); break;
				}
				foreach($handlers as $handler) {
					if (isset($argv[$handler]) &&
						false !== $page->Call($handler, $argv)) {
						$nCalls++;
					}
				}
				if ($nCalls == 0 && is_callable(array($page, '_default'))) {
					$page->Call('_default', $argv);
					$nCalls++;
				}
				$page->Finish();
			}
		}
		return $nCalls;
	}
	function Finish() {}
}

class Page {
	var $site, $method;
	function __construct($site, $method) {
		$this->site = $site;
		$this->method = $method;
	}
	function get_handlers() {
		$handlers = isset($this->handlers[$this->method]) ?
					$this->handlers[$this->method] : array();
		return $handlers;
	}
	function has_handler($handler) {
		return isset($this->handlers[$this->method]) ? in_array($handler, $this->handlers[$this->method]) : false;
	}

	function Start() {}
	function Call($handler, $argv) {
		if (is_callable(array($this, $handler)))
			return array(0, call_user_func_array(array($this, $handler), $argv));
		else return false;
	}
	function Finish() {}
}