mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-12-29 18:19:04 +01:00
345 lines
8.0 KiB
PHP
345 lines
8.0 KiB
PHP
<?php
|
|
/*
|
|
File: xajaxPluginManager.inc.php
|
|
|
|
Contains the xajax plugin manager.
|
|
|
|
Title: xajax plugin manager
|
|
|
|
Please see <copyright.inc.php> for a detailed description, copyright
|
|
and license information.
|
|
*/
|
|
|
|
/*
|
|
@package xajax
|
|
@version $Id: xajaxPluginManager.inc.php 362 2007-05-29 15:32:24Z calltoconstruct $
|
|
@copyright Copyright (c) 2005-2007 by Jared White & J. Max Wilson
|
|
@copyright Copyright (c) 2008-2009 by Joseph Woolley, Steffen Konerow, Jared White & J. Max Wilson
|
|
@license http://www.xajaxproject.org/bsd_license.txt BSD License
|
|
*/
|
|
|
|
//SkipAIO
|
|
require_once(dirname(__FILE__) . '/xajaxPlugin.inc.php');
|
|
//EndSkipAIO
|
|
|
|
/*
|
|
Class: xajaxPluginManager
|
|
*/
|
|
class xajaxPluginManager
|
|
{
|
|
/*
|
|
Array: aRequestPlugins
|
|
*/
|
|
var $aRequestPlugins;
|
|
|
|
/*
|
|
Array: aResponsePlugins
|
|
*/
|
|
var $aResponsePlugins;
|
|
|
|
/*
|
|
Array: aConfigurable
|
|
*/
|
|
var $aConfigurable;
|
|
|
|
/*
|
|
Array: aRegistrars
|
|
*/
|
|
var $aRegistrars;
|
|
|
|
/*
|
|
Array: aProcessors
|
|
*/
|
|
var $aProcessors;
|
|
|
|
/*
|
|
Array: aClientScriptGenerators
|
|
*/
|
|
var $aClientScriptGenerators;
|
|
|
|
/*
|
|
Function: xajaxPluginManager
|
|
|
|
Construct and initialize the one and only xajax plugin manager.
|
|
*/
|
|
function xajaxPluginManager()
|
|
{
|
|
$this->aRequestPlugins = array();
|
|
$this->aResponsePlugins = array();
|
|
|
|
$this->aConfigurable = array();
|
|
$this->aRegistrars = array();
|
|
$this->aProcessors = array();
|
|
$this->aClientScriptGenerators = array();
|
|
}
|
|
|
|
/*
|
|
Function: getInstance
|
|
|
|
Implementation of the singleton pattern: returns the one and only instance of the
|
|
xajax plugin manager.
|
|
|
|
Returns:
|
|
|
|
object : a reference to the one and only instance of the
|
|
plugin manager.
|
|
*/
|
|
function &getInstance()
|
|
{
|
|
static $obj;
|
|
if (!$obj) {
|
|
$obj = new xajaxPluginManager();
|
|
}
|
|
return $obj;
|
|
}
|
|
|
|
/*
|
|
Function: loadPlugins
|
|
|
|
Loads plugins from the folders specified.
|
|
|
|
Parameters:
|
|
$aFolders - (array): Array of folders to check for plugins
|
|
*/
|
|
function loadPlugins($aFolders)
|
|
{
|
|
foreach ($aFolders as $sFolder) {
|
|
if (is_dir($sFolder))
|
|
if ($handle = opendir($sFolder)) {
|
|
while (!(false === ($sName = readdir($handle)))) {
|
|
$nLength = strlen($sName);
|
|
if (8 < $nLength) {
|
|
$sFileName = substr($sName, 0, $nLength - 8);
|
|
$sExtension = substr($sName, $nLength - 8, 8);
|
|
if ('.inc.php' == $sExtension) {
|
|
require_once $sFolder . '/' . $sFileName . $sExtension;
|
|
}
|
|
}
|
|
}
|
|
|
|
closedir($handle);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
Function: _insertIntoArray
|
|
|
|
Inserts an entry into an array given the specified priority number.
|
|
If a plugin already exists with the given priority, the priority is
|
|
automatically incremented until a free spot is found. The plugin
|
|
is then inserted into the empty spot in the array.
|
|
|
|
Parameters:
|
|
|
|
$aPlugins - (array): Plugins array
|
|
$objPlugin - (object): A reference to an instance of a plugin.
|
|
$nPriority - (number): The desired priority, used to order
|
|
the plugins.
|
|
|
|
*/
|
|
function _insertIntoArray(&$aPlugins, &$objPlugin, $nPriority)
|
|
{
|
|
while (isset($aPlugins[$nPriority]))
|
|
$nPriority++;
|
|
|
|
$aPlugins[$nPriority] =& $objPlugin;
|
|
}
|
|
|
|
/*
|
|
Function: registerPlugin
|
|
|
|
Registers a plugin.
|
|
|
|
Parameters:
|
|
|
|
objPlugin - (object): A reference to an instance of a plugin.
|
|
|
|
Note:
|
|
Below is a table for priorities and their description:
|
|
0 thru 999: Plugins that are part of or extensions to the xajax core
|
|
1000 thru 8999: User created plugins, typically, these plugins don't care about order
|
|
9000 thru 9999: Plugins that generally need to be last or near the end of the plugin list
|
|
*/
|
|
function registerPlugin(&$objPlugin, $nPriority=1000)
|
|
{
|
|
if (is_a($objPlugin, 'xajaxRequestPlugin'))
|
|
{
|
|
$this->_insertIntoArray($this->aRequestPlugins, $objPlugin, $nPriority);
|
|
|
|
if (method_exists($objPlugin, 'register'))
|
|
$this->_insertIntoArray($this->aRegistrars, $objPlugin, $nPriority);
|
|
|
|
if (method_exists($objPlugin, 'canProcessRequest'))
|
|
if (method_exists($objPlugin, 'processRequest'))
|
|
$this->_insertIntoArray($this->aProcessors, $objPlugin, $nPriority);
|
|
}
|
|
else if (is_a($objPlugin, 'xajaxResponsePlugin'))
|
|
{
|
|
$this->aResponsePlugins[] =& $objPlugin;
|
|
}
|
|
else
|
|
{
|
|
//SkipDebug
|
|
$objLanguageManager =& xajaxLanguageManager::getInstance();
|
|
trigger_error(
|
|
$objLanguageManager->getText('XJXPM:IPLGERR:01')
|
|
. get_class($objPlugin)
|
|
. $objLanguageManager->getText('XJXPM:IPLGERR:02')
|
|
, E_USER_ERROR
|
|
);
|
|
//EndSkipDebug
|
|
}
|
|
|
|
if (method_exists($objPlugin, 'configure'))
|
|
$this->_insertIntoArray($this->aConfigurable, $objPlugin, $nPriority);
|
|
|
|
if (method_exists($objPlugin, 'generateClientScript'))
|
|
$this->_insertIntoArray($this->aClientScriptGenerators, $objPlugin, $nPriority);
|
|
}
|
|
|
|
/*
|
|
Function: canProcessRequest
|
|
|
|
Calls each of the request plugins and determines if the
|
|
current request can be processed by one of them. If no processor identifies
|
|
the current request, then the request must be for the initial page load.
|
|
|
|
See <xajax->canProcessRequest> for more information.
|
|
*/
|
|
function canProcessRequest()
|
|
{
|
|
$bHandled = false;
|
|
|
|
$aKeys = array_keys($this->aProcessors);
|
|
sort($aKeys);
|
|
foreach ($aKeys as $sKey) {
|
|
$mResult = $this->aProcessors[$sKey]->canProcessRequest();
|
|
if (true === $mResult)
|
|
$bHandled = true;
|
|
else if (is_string($mResult))
|
|
return $mResult;
|
|
}
|
|
|
|
return $bHandled;
|
|
}
|
|
|
|
/*
|
|
Function: processRequest
|
|
|
|
Calls each of the request plugins to request that they process the
|
|
current request. If the plugin processes the request, it will
|
|
return true.
|
|
*/
|
|
function processRequest()
|
|
{
|
|
$bHandled = false;
|
|
|
|
$aKeys = array_keys($this->aProcessors);
|
|
sort($aKeys);
|
|
foreach ($aKeys as $sKey) {
|
|
$mResult = $this->aProcessors[$sKey]->processRequest();
|
|
if (true === $mResult)
|
|
$bHandled = true;
|
|
else if (is_string($mResult))
|
|
return $mResult;
|
|
}
|
|
|
|
return $bHandled;
|
|
}
|
|
|
|
/*
|
|
Function: configure
|
|
|
|
Call each of the request plugins passing along the configuration
|
|
setting specified.
|
|
|
|
Parameters:
|
|
|
|
sName - (string): The name of the configuration setting to set.
|
|
mValue - (mixed): The value to be set.
|
|
*/
|
|
function configure($sName, $mValue)
|
|
{
|
|
$aKeys = array_keys($this->aConfigurable);
|
|
sort($aKeys);
|
|
foreach ($aKeys as $sKey)
|
|
$this->aConfigurable[$sKey]->configure($sName, $mValue);
|
|
}
|
|
|
|
/*
|
|
Function: register
|
|
|
|
Call each of the request plugins and give them the opportunity to
|
|
handle the registration of the specified function, event or callable object.
|
|
|
|
Parameters:
|
|
$aArgs - (array) :
|
|
*/
|
|
function register($aArgs)
|
|
{
|
|
$aKeys = array_keys($this->aRegistrars);
|
|
sort($aKeys);
|
|
foreach ($aKeys as $sKey)
|
|
{
|
|
$objPlugin =& $this->aRegistrars[$sKey];
|
|
$mResult =& $objPlugin->register($aArgs);
|
|
if (is_a($mResult, 'xajaxRequest'))
|
|
return $mResult;
|
|
if (is_array($mResult))
|
|
return $mResult;
|
|
if (is_bool($mResult))
|
|
if (true === $mResult)
|
|
return true;
|
|
}
|
|
//SkipDebug
|
|
$objLanguageManager =& xajaxLanguageManager::getInstance();
|
|
trigger_error(
|
|
$objLanguageManager->getText('XJXPM:MRMERR:01')
|
|
. print_r($aArgs, true)
|
|
, E_USER_ERROR
|
|
);
|
|
//EndSkipDebug
|
|
}
|
|
|
|
/*
|
|
Function: generateClientScript
|
|
|
|
Call each of the request and response plugins giving them the
|
|
opportunity to output some javascript to the page being generated. This
|
|
is called only when the page is being loaded initially. This is not
|
|
called when processing a request.
|
|
*/
|
|
function generateClientScript()
|
|
{
|
|
$aKeys = array_keys($this->aClientScriptGenerators);
|
|
sort($aKeys);
|
|
foreach ($aKeys as $sKey)
|
|
$this->aClientScriptGenerators[$sKey]->generateClientScript();
|
|
}
|
|
|
|
/*
|
|
Function: getPlugin
|
|
|
|
Locate the specified response plugin by name and return
|
|
a reference to it if one exists.
|
|
|
|
Parameters:
|
|
$sName - (string): Name of the plugin.
|
|
|
|
Returns:
|
|
mixed : Returns plugin or false if not found.
|
|
*/
|
|
function &getPlugin($sName)
|
|
{
|
|
$aKeys = array_keys($this->aResponsePlugins);
|
|
sort($aKeys);
|
|
foreach ($aKeys as $sKey)
|
|
if (is_a($this->aResponsePlugins[$sKey], $sName))
|
|
return $this->aResponsePlugins[$sKey];
|
|
|
|
$bFailure = false;
|
|
return $bFailure;
|
|
}
|
|
}
|