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386 lines
11 KiB
PHP
386 lines
11 KiB
PHP
<?php
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/*
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+-----------------------------------------------------------------------+
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| This file is part of the Roundcube Webmail client |
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| Copyright (C) 2008-2012, The Roundcube Dev Team |
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| Licensed under the GNU General Public License version 3 or |
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| any later version with exceptions for skins & plugins. |
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| See the README file for a full license statement. |
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| PURPOSE: |
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| Abstract plugins interface/class |
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| All plugins need to extend this class |
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+-----------------------------------------------------------------------+
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| Author: Thomas Bruederli <roundcube@gmail.com> |
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+-----------------------------------------------------------------------+
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*/
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/**
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* Plugin interface class
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*
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* @package Framework
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* @subpackage PluginAPI
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*/
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abstract class rcube_plugin
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{
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/**
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* Class name of the plugin instance
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*
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* @var string
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*/
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public $ID;
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/**
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* Instance of Plugin API
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*
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* @var rcube_plugin_api
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*/
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public $api;
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/**
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* Regular expression defining task(s) to bind with
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*
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* @var string
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*/
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public $task;
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/**
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* Disables plugin in AJAX requests
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*
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* @var boolean
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*/
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public $noajax = false;
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/**
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* Disables plugin in framed mode
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*
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* @var boolean
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*/
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public $noframe = false;
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/**
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* A list of config option names that can be modified
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* by the user via user interface (with save-prefs command)
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*
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* @var array
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*/
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public $allowed_prefs;
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protected $home;
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protected $urlbase;
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private $mytask;
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/**
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* Default constructor.
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*
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* @param rcube_plugin_api $api Plugin API
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*/
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public function __construct($api)
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{
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$this->ID = get_class($this);
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$this->api = $api;
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$this->home = $api->dir . $this->ID;
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$this->urlbase = $api->url . $this->ID . '/';
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}
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/**
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* Initialization method, needs to be implemented by the plugin itself
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*/
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abstract function init();
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/**
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* Attempt to load the given plugin which is required for the current plugin
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*
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* @param string Plugin name
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* @return boolean True on success, false on failure
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*/
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public function require_plugin($plugin_name)
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{
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return $this->api->load_plugin($plugin_name);
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}
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/**
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* Load local config file from plugins directory.
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* The loaded values are patched over the global configuration.
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*
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* @param string $fname Config file name relative to the plugin's folder
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*
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* @return boolean True on success, false on failure
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*/
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public function load_config($fname = 'config.inc.php')
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{
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$fpath = $this->home.'/'.$fname;
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$rcube = rcube::get_instance();
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if (is_file($fpath) && !$rcube->config->load_from_file($fpath)) {
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rcube::raise_error(array(
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'code' => 527, 'type' => 'php',
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'file' => __FILE__, 'line' => __LINE__,
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'message' => "Failed to load config from $fpath"), true, false);
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return false;
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}
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return true;
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}
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/**
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* Register a callback function for a specific (server-side) hook
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*
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* @param string $hook Hook name
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* @param mixed $callback Callback function as string or array
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* with object reference and method name
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*/
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public function add_hook($hook, $callback)
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{
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$this->api->register_hook($hook, $callback);
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}
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/**
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* Unregister a callback function for a specific (server-side) hook.
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*
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* @param string $hook Hook name
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* @param mixed $callback Callback function as string or array
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* with object reference and method name
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*/
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public function remove_hook($hook, $callback)
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{
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$this->api->unregister_hook($hook, $callback);
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}
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/**
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* Load localized texts from the plugins dir
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*
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* @param string $dir Directory to search in
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* @param mixed $add2client Make texts also available on the client
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* (array with list or true for all)
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*/
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public function add_texts($dir, $add2client = false)
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{
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$domain = $this->ID;
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$lang = $_SESSION['language'];
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$langs = array_unique(array('en_US', $lang));
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$locdir = slashify(realpath(slashify($this->home) . $dir));
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$texts = array();
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// Language aliases used to find localization in similar lang, see below
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$aliases = array(
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'de_CH' => 'de_DE',
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'es_AR' => 'es_ES',
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'fa_AF' => 'fa_IR',
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'nl_BE' => 'nl_NL',
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'pt_BR' => 'pt_PT',
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'zh_CN' => 'zh_TW',
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);
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// use buffering to handle empty lines/spaces after closing PHP tag
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ob_start();
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foreach ($langs as $lng) {
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$fpath = $locdir . $lng . '.inc';
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if (is_file($fpath) && is_readable($fpath)) {
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include $fpath;
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$texts = (array)$labels + (array)$messages + (array)$texts;
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}
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else if ($lng != 'en_US') {
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// Find localization in similar language (#1488401)
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$alias = null;
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if (!empty($aliases[$lng])) {
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$alias = $aliases[$lng];
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}
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else if ($key = array_search($lng, $aliases)) {
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$alias = $key;
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}
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if (!empty($alias)) {
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$fpath = $locdir . $alias . '.inc';
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if (is_file($fpath) && is_readable($fpath)) {
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include $fpath;
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$texts = (array)$labels + (array)$messages + (array)$texts;
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}
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}
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}
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}
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ob_end_clean();
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// prepend domain to text keys and add to the application texts repository
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if (!empty($texts)) {
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$add = array();
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foreach ($texts as $key => $value) {
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$add[$domain.'.'.$key] = $value;
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}
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$rcube = rcube::get_instance();
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$rcube->load_language($lang, $add);
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// add labels to client
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if ($add2client) {
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if (is_array($add2client)) {
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$js_labels = array_map(array($this, 'label_map_callback'), $add2client);
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}
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else {
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$js_labels = array_keys($add);
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}
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$rcube->output->add_label($js_labels);
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}
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}
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}
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/**
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* Wrapper for rcube::gettext() adding the plugin ID as domain
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*
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* @param string $p Message identifier
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*
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* @return string Localized text
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* @see rcube::gettext()
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*/
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public function gettext($p)
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{
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return rcube::get_instance()->gettext($p, $this->ID);
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}
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/**
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* Register this plugin to be responsible for a specific task
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*
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* @param string $task Task name (only characters [a-z0-9_.-] are allowed)
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*/
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public function register_task($task)
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{
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if ($this->api->register_task($task, $this->ID)) {
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$this->mytask = $task;
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}
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}
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/**
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* Register a handler for a specific client-request action
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*
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* The callback will be executed upon a request like /?_task=mail&_action=plugin.myaction
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*
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* @param string $action Action name (should be unique)
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* @param mixed $callback Callback function as string
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* or array with object reference and method name
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*/
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public function register_action($action, $callback)
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{
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$this->api->register_action($action, $this->ID, $callback, $this->mytask);
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}
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/**
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* Register a handler function for a template object
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*
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* When parsing a template for display, tags like <roundcube:object name="plugin.myobject" />
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* will be replaced by the return value if the registered callback function.
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*
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* @param string $name Object name (should be unique and start with 'plugin.')
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* @param mixed $callback Callback function as string or array with object reference
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* and method name
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*/
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public function register_handler($name, $callback)
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{
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$this->api->register_handler($name, $this->ID, $callback);
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}
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/**
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* Make this javascipt file available on the client
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*
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* @param string $fn File path; absolute or relative to the plugin directory
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*/
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public function include_script($fn)
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{
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$this->api->include_script($this->resource_url($fn));
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}
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/**
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* Make this stylesheet available on the client
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*
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* @param string $fn File path; absolute or relative to the plugin directory
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*/
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public function include_stylesheet($fn)
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{
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$this->api->include_stylesheet($this->resource_url($fn));
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}
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/**
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* Append a button to a certain container
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*
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* @param array $p Hash array with named parameters (as used in skin templates)
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* @param string $container Container name where the buttons should be added to
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*
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* @see rcube_remplate::button()
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*/
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public function add_button($p, $container)
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{
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if ($this->api->output->type == 'html') {
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// fix relative paths
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foreach (array('imagepas', 'imageact', 'imagesel') as $key) {
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if ($p[$key]) {
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$p[$key] = $this->api->url . $this->resource_url($p[$key]);
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}
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}
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$this->api->add_content($this->api->output->button($p), $container);
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}
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}
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/**
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* Generate an absolute URL to the given resource within the current
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* plugin directory
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*
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* @param string $fn The file name
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*
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* @return string Absolute URL to the given resource
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*/
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public function url($fn)
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{
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return $this->api->url . $this->resource_url($fn);
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}
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/**
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* Make the given file name link into the plugin directory
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*
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* @param string $fn Filename
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*/
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private function resource_url($fn)
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{
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if ($fn[0] != '/' && !preg_match('|^https?://|i', $fn)) {
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return $this->ID . '/' . $fn;
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}
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else {
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return $fn;
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}
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}
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/**
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* Provide path to the currently selected skin folder within the plugin directory
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* with a fallback to the default skin folder.
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*
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* @return string Skin path relative to plugins directory
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*/
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public function local_skin_path()
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{
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$rcube = rcube::get_instance();
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foreach (array($rcube->config->get('skin'), 'larry') as $skin) {
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$skin_path = 'skins/' . $skin;
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if (is_dir(realpath(slashify($this->home) . $skin_path))) {
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break;
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}
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}
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return $skin_path;
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}
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/**
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* Callback function for array_map
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*
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* @param string $key Array key.
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* @return string
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*/
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private function label_map_callback($key)
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{
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return $this->ID.'.'.$key;
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}
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}
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