egroupware_official/phpgwapi/inc/class.hooks.inc.php

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<?php
/**************************************************************************\
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* phpGroupWare API - Hooks *
* This file written by Dan Kuykendall <seek3r@phpgroupware.org> *
* Allows applications to "hook" into each other *
* Copyright (C) 2000, 2001 Dan Kuykendall *
* -------------------------------------------------------------------------*
* This library is part of the phpGroupWare API *
* http://www.phpgroupware.org/api *
* ------------------------------------------------------------------------ *
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* This library is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 2.1 of the License, *
* or any later version. *
* This library is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
* See the GNU Lesser General Public License for more details. *
* You should have received a copy of the GNU Lesser General Public License *
* along with this library; if not, write to the Free Software Foundation, *
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *
\**************************************************************************/
/* $Id$ */
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/*!
@class hooks
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@abstract class which gives ability for applications to set and use hooks to communicate with each other
@author Dan Kuykendall
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@copyright LGPL
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@package phpgwapi
@access public
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*/
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class hooks
{
var $found_hooks = Array();
function hooks()
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{
//$GLOBALS['phpgw']->db->query("SELECT hook_appname, hook_location, hook_filename FROM phpgw_hooks WHERE hook_location='".$location."'",__LINE__,__FILE__);
$GLOBALS['phpgw']->db->query("SELECT hook_appname, hook_location, hook_filename FROM phpgw_hooks",__LINE__,__FILE__);
while( $GLOBALS['phpgw']->db->next_record() )
{
$this->found_hooks[$GLOBALS['phpgw']->db->f('hook_appname')][$GLOBALS['phpgw']->db->f('hook_location')] = $GLOBALS['phpgw']->db->f('hook_filename');
}
//echo '<pre>';
//print_r($this->found_hooks);
//echo '</pre>';
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}
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/*!
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@function process
@abstract loads up all the hooks the user has rights to
@discussion Someone flesh this out please
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*/
// Note: $no_permission_check should *ONLY* be used when it *HAS* to be. (jengo)
function process($location, $order = '', $no_permission_check = False)
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{
$SEP = filesystem_separator();
if ($order == '')
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{
settype($order,'array');
$order[] = $GLOBALS['phpgw_info']['flags']['currentapp'];
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}
/* First include the ordered apps hook file */
reset ($order);
while (list(,$appname) = each($order))
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{
if (isset($this->found_hooks[$appname][$location]))
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{
$f = PHPGW_SERVER_ROOT . $SEP . $appname . $SEP . 'inc' . $SEP . $this->found_hooks[$appname][$location];
if (file_exists($f) &&
( $GLOBALS['phpgw_info']['user']['apps'][$appname] || (($no_permission_check || $appname == 'preferences') && $appname)) )
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{
include($f);
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}
}
$completed_hooks[$appname] = True;
}
/* Then add the rest */
if ($no_permission_check)
{
reset($GLOBALS['phpgw_info']['apps']);
while (list(,$p) = each($GLOBALS['phpgw_info']['apps']))
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{
$appname = $p['name'];
if (! isset($completed_hooks[$appname]) || $completed_hooks[$appname] != True)
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{
if (isset($this->found_hooks[$appname][$location]))
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{
$f = PHPGW_SERVER_ROOT . $SEP . $appname . $SEP . 'inc' . $SEP . $this->found_hooks[$appname][$location];
if (file_exists($f))
{
include($f);
}
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}
}
}
}
else
{
reset ($GLOBALS['phpgw_info']['user']['apps']);
while (list(,$p) = each($GLOBALS['phpgw_info']['user']['apps']))
{
$appname = $p['name'];
if (! isset($completed_hooks[$appname]) || $completed_hooks[$appname] != True)
{
if (isset($this->found_hooks[$appname][$location]))
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{
$f = PHPGW_SERVER_ROOT . $SEP . $appname . $SEP . 'inc' . $SEP . $this->found_hooks[$appname][$location];
if (file_exists($f))
{
include($f);
}
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}
}
}
}
}
/*!
@function single
@abstract call the hooks for a single application
@param $location hook location - required
@param $appname application name - optional
*/
// Note: $no_permission_check should *ONLY* be used when it *HAS* to be. (jengo)
function single($location, $appname = '', $no_permission_check = False)
{
if (! $appname)
{
$appname = $GLOBALS['phpgw_info']['flags']['currentapp'];
}
$SEP = filesystem_separator();
/* First include the ordered apps hook file */
if (isset($this->found_hooks[$appname][$location]))
{
$f = PHPGW_SERVER_ROOT . $SEP . $appname . $SEP . 'inc' . $SEP . $this->found_hooks[$appname][$location];
if (file_exists($f) &&
( $GLOBALS['phpgw_info']['user']['apps'][$appname] || (($no_permission_check || $location == 'config' || $appname == 'phpgwapi') && $appname)) )
{
include($f);
return True;
}
else
{
return False;
}
}
else
{
return False;
}
}
/*!
@function count
@abstract loop through the applications and count the hooks
*/
function count($location)
{
$count = 0;
reset($GLOBALS['phpgw_info']['user']['apps']);
$SEP = filesystem_separator();
while ($permission = each($GLOBALS['phpgw_info']['user']['apps']))
{
if (isset($this->found_hooks[$permission[0]][$location]))
{
++$count;
}
}
return $count;
}
/*!
@function read()
@abstract currently not being used
*/
function read()
{
//if (!is_array($this->found_hooks))
//{
$this->hooks();
//}
return $this->found_hooks;
}
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}
?>