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rcube_plugin.php
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rcube_plugin.php
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<?php
/*
+-----------------------------------------------------------------------+
| program/include/rcube_plugin.php |
| |
| This file is part of the RoundCube Webmail client |
| Copyright (C) 2008-2009, RoundCube Dev. - Switzerland |
| Licensed under the GNU GPL |
| |
| PURPOSE: |
| Abstract plugins interface/class |
| All plugins need to extend this class |
+-----------------------------------------------------------------------+
| Author: Thomas Bruederli <roundcube@gmail.com> |
+-----------------------------------------------------------------------+
$Id: $
*/
/**
* Plugin interface class
*
* @package Core
*/
abstract class rcube_plugin
{
public $ID;
public $api;
public $task;
protected $home;
protected $urlbase;
/**
* Default constructor.
*/
public function __construct($api)
{
$this->ID = get_class($this);
$this->api = $api;
$this->home = $api->dir . DIRECTORY_SEPARATOR . $this->ID;
$this->urlbase = $api->url . $this->ID . '/';
}
/**
* Initialization method, needs to be implemented by the plugin itself
*/
abstract function init();
/**
* Register a callback function for a specific (server-side) hook
*
* @param string Hook name
* @param mixed Callback function as string or array with object reference and method name
*/
public function add_hook($hook, $callback)
{
$this->api->register_hook($hook, $callback);
}
/**
* Load localized texts from the plugins dir
*
* @param string Directory to search in
* @param mixed Make texts also available on the client (array with list or true for all)
*/
public function add_texts($dir, $add2client = false)
{
$domain = $this->ID;
$lang = $_SESSION['language'];
$locdir = slashify(realpath(slashify($this->home) . $dir));
$texts = array();
foreach (array('en_US', $lang) as $lng) {
@include($locdir . $lng . '.inc');
$texts = (array)$labels + (array)$messages + (array)$texts;
}
// prepend domain to text keys and add to the application texts repository
if (!empty($texts)) {
$add = array();
foreach ($texts as $key => $value)
$add[$domain.'.'.$key] = $value;
$rcmail = rcmail::get_instance();
$rcmail->load_language($lang, $add);
// add labels to client
if ($add2client) {
$js_labels = is_array($add2client) ? array_map(array($this, 'label_map_callback'), $add2client) : array_keys($add);
$rcmail->output->add_label($js_labels);
}
}
}
/**
* Wrapper for rcmail::gettext() adding the plugin ID as domain
*
* @return string Localized text
* @see rcmail::gettext()
*/
public function gettext($p)
{
return rcmail::get_instance()->gettext($p, $this->ID);
}
/**
* Register this plugin to be responsible for a specific task
*
* @param string Task name (only characters [a-z0-9_.-] are allowed)
*/
public function register_task($task)
{
if ($task != asciiwords($task)) {
raise_error(array('code' => 526, 'type' => 'php', 'message' => "Invalid task name: $task. Only characters [a-z0-9_.-] are allowed"), true, false);
}
else if (in_array(rcmail::$main_tasks, $task)) {
raise_error(array('code' => 526, 'type' => 'php', 'message' => "Cannot register taks $task; already taken by another plugin or the application itself"), true, false);
}
else {
rcmail::$main_tasks[] = $task;
}
}
/**
* Register a handler for a specific client-request action
*
* The callback will be executed upon a request like /?_task=mail&_action=plugin.myaction
*
* @param string Action name (should be unique)
* @param mixed Callback function as string or array with object reference and method name
*/
public function register_action($action, $callback)
{
$this->api->register_action($action, $this->ID, $callback);
}
/**
* Register a handler function for a template object
*
* When parsing a template for display, tags like <roundcube:object name="plugin.myobject" />
* will be replaced by the return value if the registered callback function.
*
* @param string Object name (should be unique and start with 'plugin.')
* @param mixed Callback function as string or array with object reference and method name
*/
public function register_handler($name, $callback)
{
$this->api->register_handler($name, $this->ID, $callback);
}
/**
* Make this javascipt file available on the client
*
* @param string File path; absolute or relative to the plugin directory
*/
public function include_script($fn)
{
$this->api->include_script($this->ressource_url($fn));
}
/**
* Make this stylesheet available on the client
*
* @param string File path; absolute or relative to the plugin directory
*/
public function include_stylesheet($fn)
{
$this->api->include_stylesheet($this->ressource_url($fn));
}
/**
* Append a button to a certain container
*
* @param array Hash array with named parameters (as used in skin templates)
* @param string Container name where the buttons should be added to
* @see rcube_remplate::button()
*/
public function add_button($p, $container)
{
if ($this->api->output->type == 'html') {
// fix relative paths
foreach (array('imagepas', 'imageact', 'imagesel') as $key)
if ($p[$key])
$p[$key] = $this->api->url . $this->ressource_url($p[$key]);
$this->api->add_content($this->api->output->button($p), $container);
}
}
/**
* Make the given file name link into the plugin directory
*/
private function ressource_url($fn)
{
if ($fn[0] != '/' && !preg_match('|^https?://|i', $fn))
return $this->ID . '/' . $fn;
else
return $fn;
}
/**
* Callback function for array_map
*/
private function label_map_callback($key)
{
return $this->ID.'.'.$key;
}
}

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