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applied some bug fixes
[nucleus-jp/nucleus-jp-ancient.git] / euc / nucleus / libs / PLUGIN.php
index 8dd4110..b95bc96 100755 (executable)
-<?php  /**
-         * Nucleus: PHP/MySQL Weblog CMS (http://nucleuscms.org/)
-         * Copyright (C) 2002-2004 The Nucleus Group
-         *
-         * This program is free software; you can redistribute it and/or
-         * modify it under the terms of the GNU General Public License
-         * as published by the Free Software Foundation; either version 2
-         * of the License, or (at your option) any later version.
-         * (see nucleus/documentation/index.html#license for more info)
-         *
-         * This is an (abstract) class of which all Nucleus Plugins must inherit
-         *
-         * for more information on plugins and how to write your own, see the
-         * plugins.html file that is included with the Nucleus documenation
-         *
-         * $Id: PLUGIN.php,v 1.1.1.1 2005-02-28 07:14:13 kimitake Exp $
-         */
-       class NucleusPlugin {
-
-               // these functions _have_ to be redefined in your plugin
-
-               function getName() { return 'Undefined'; }
-               function getAuthor()  { return 'Undefined'; }
-               function getURL()  { return 'Undefined'; }
-               function getVersion() { return '0.0'; }
-               function getDescription() { return 'Undefined';}
-
-               // these function _may_ be redefined in your plugin
-
-               function getMinNucleusVersion() { return 150; }
-               function getMinNucleusPatchLevel() { return 0; }
-               function getEventList() { return array(); }
-               function getTableList() { return array(); }
-               function hasAdminArea() { return 0; }
-
-               function install() {}
-               function unInstall() {}
-
-               function init() {}
-
-               function doSkinVar($skinType) {}
-               function doTemplateVar(&$item) {
-                       $args = func_get_args();
-                       array_shift($args);
-                       array_unshift($args, 'template');
-                       call_user_func_array(array(&$this,'doSkinVar'),$args);
-               }
-               function doTemplateCommentsVar(&$item, &$comment) {
-                       $args = func_get_args();
-                       array_shift($args);
-                       array_shift($args);
-                       array_unshift($args, 'template');
-                       call_user_func_array(array(&$this,'doSkinVar'),$args);
-               }
-               function doAction($type) { return 'No Such Action'; }
-
-               /**
-                * Checks if a plugin supports a certain feature.
-                *
-                * @returns 1 if the feature is reported, 0 if not
-                * @param $feature
-                *              Name of the feature. See plugin documentation for more info
-                *                      'SqlTablePrefix' -> if the plugin uses the sql_table() method to get table names
-                *                      'HelpPage' -> if the plugin provides a helppage
-                */
-               function supportsFeature($feature) {
-                       return 0;
-               }
-
-               /**
-                * Report a list of plugin that is required to function
-                * 
-                * @returns an array of names of plugin, an empty array indicates no dependency
-                */
-               function getPluginDep() { return array(); }
-
-               // these helper functions should not be redefined in your plugin
-
-               /**
-                 * Creates a new option for this plugin
-                 *
-                 * @param name
-                 *             A string uniquely identifying your option. (max. length is 20 characters)
-                 * @param description
-                 *             A description that will show up in the nucleus admin area (max. length: 255 characters)
-                 * @param type
-                 *             Either 'text', 'yesno' or 'password'
-                 *             This info is used when showing 'edit plugin options' screens
-                 * @param value
-                 *             Initial value for the option (max. value length is 128 characters)
-                 */
-               function createOption($name, $desc, $type, $defValue = '', $typeExtras = '') {
-                       return $this->_createOption('global', $name, $desc, $type, $defValue, $typeExtras);
-               }
-               function createBlogOption($name, $desc, $type, $defValue = '', $typeExtras = '') {
-                       return $this->_createOption('blog', $name, $desc, $type, $defValue, $typeExtras);
-               }
-               function createMemberOption($name, $desc, $type, $defValue = '', $typeExtras = '') {
-                       return $this->_createOption('member', $name, $desc, $type, $defValue, $typeExtras);
-               }
-               function createCategoryOption($name, $desc, $type, $defValue = '', $typeExtras = '') {
-                       return $this->_createOption('category', $name, $desc, $type, $defValue, $typeExtras);
-               }
-        function createItemOption($name, $desc, $type, $defValue = '', $typeExtras = '') {
-                       return $this->_createOption('item', $name, $desc, $type, $defValue, $typeExtras);
-               }
-
-               /**
-                 * Removes the option from the database
-                 *
-                 * Note: Options get erased automatically on plugin uninstall
-                 */
-               function deleteOption($name) {
-                       return $this->_deleteOption('global', $name);
-               }
-               function deleteBlogOption($name) {
-                       return $this->_deleteOption('blog', $name);
-               }
-               function deleteMemberOption($name) {
-                       return $this->_deleteOption('member', $name);
-               }
-               function deleteCategoryOption($name) {
-                       return $this->_deleteOption('category', $name);
-               }
-        function deleteItemOption($name) {
-                       return $this->_deleteOption('item', $name);
-               }
-
-               /**
-                 * Sets the value of an option to something new
-                 */
-               function setOption($name, $value) {
-                       return $this->_setOption('global', 0, $name, $value);
-               }
-               function setBlogOption($blogid, $name, $value) {
-                       return $this->_setOption('blog', $blogid, $name, $value);
-               }
-               function setMemberOption($memberid, $name, $value) {
-                       return $this->_setOption('member', $memberid, $name, $value);
-               }
-               function setCategoryOption($catid, $name, $value) {
-                       return $this->_setOption('category', $catid, $name, $value);
-               }
-        function setItemOption($itemid, $name, $value) {
-                       return $this->_setOption('item', $itemid, $name, $value);
-               }
-
-               /**
-                 * Retrieves the current value for an option
-                 */
-               function getOption($name)
-               {
-                       // only request the options the very first time. On subsequent requests
-                       // the static collection is used to save SQL queries.
-                       if ($this->plugin_options == 0)
-                       {
-                               $this->plugin_options = array();        
-                               $query = mysql_query(
-                                        'SELECT d.oname as name, o.ovalue as value '.
-                                        'FROM '.
-                                        sql_table('plugin_option').' o, '.
-                                        sql_table('plugin_option_desc').' d '.
-                                        'WHERE d.opid='. intval($this->getID()).' AND d.oid=o.oid'
-                               );
-                               while ($row = mysql_fetch_object($query))
-                                       $this->plugin_options[strtolower($row->name)] = $row->value;
-                 }
-                 if (isset($this->plugin_options[strtolower($name)]))
-                               return $this->plugin_options[strtolower($name)];
-                 else
-                               return $this->_getOption('global', 0, $name);
-               }                 
-
-               function getBlogOption($blogid, $name) {
-                       return $this->_getOption('blog', $blogid, $name);
-               }
-               function getMemberOption($memberid, $name) {
-                       return $this->_getOption('member', $memberid, $name);
-               }
-               function getCategoryOption($catid, $name) {
-                       return $this->_getOption('category', $catid, $name);
-               }
-        function getItemOption($itemid, $name) {
-                       return $this->_getOption('item', $itemid, $name);
-               }
-
-               /**
-                * Retrieves an associative array with the option value for each
-                * context id
-                */
-               function getAllBlogOptions($name) {
-                       return $this->_getAllOptions('blog', $name);
-               }
-               function getAllMemberOptions($name) {
-                       return $this->_getAllOptions('member', $name);
-               }
-               function getAllCategoryOptions($name) {
-                       return $this->_getAllOptions('category', $name);
-               }
-        function getAllItemOptions($name) {
-                       return $this->_getAllOptions('item', $name);
-               }
-               
-               /**
-         * Retrieves an indexed array with the top (or bottom) of an option
-                * (delegates to _getOptionTop())
-         */
-               function getBlogOptionTop($name, $amount = 10, $sort = 'desc') {
-                       return $this->_getOptionTop('blog', $name, $amount, $sort);
-               }
-               function getMemberOptionTop($name, $amount = 10, $sort = 'desc') {
-                       return $this->_getOptionTop('member', $name, $amount, $sort);
-               }
-               function getCategoryOptionTop($name, $amount = 10, $sort = 'desc') {
-                       return $this->_getOptionTop('category', $name, $amount, $sort);
-               }
-               function getItemOptionTop($name, $amount = 10, $sort = 'desc') {
-                       return $this->_getOptionTop('item', $name, $amount, $sort);
-               }
-               
-               /**
-                * Retrieves an array of the top (or bottom) of an option from a plugin.
-                * @author TeRanEX
-                * @param  string $context the context for the option: item, blog, member,...
-                * @param  string $name    the name of the option
-                * @param  int    $amount  how many rows must be returned
-                * @param  string $sort    desc or asc
-                * @return array           array with both values and contextid's
-                * @access private
-                */
-        function _getOptionTop($context, $name, $amount = 10, $sort = 'desc') {
-                       if (($sort != 'desc') && ($sort != 'asc')) {
-                               $sort= 'desc';
-                       }
-
-                       $oid = $this->_getOID($context, $name);
-
-                       // retrieve the data and return
-                       $q = 'SELECT otype, oextra FROM '.sql_table('plugin_option_desc').' WHERE oid = '.$oid;
-                       $query = mysql_query($q);
-
-                       $o = mysql_fetch_array($query);
-
-                       if (($this->optionCanBeNumeric($o['otype'])) && ($o['oextra'] == 'number' )) {
-                               $orderby = 'CAST(ovalue AS SIGNED)';
-                       } else {
-                               $orderby = 'ovalue';
-                       }
-                       $q = 'SELECT ovalue value, ocontextid id FROM '.sql_table('plugin_option').' WHERE oid = '.$oid.' ORDER BY '.$orderby.' '.$sort.' LIMIT 0,'.$amount;
-                       $query = mysql_query($q);
-                       
-                       // create the array
-                       $i = 0;
-                       $top = array();
-                       while($row = mysql_fetch_array($query)) {
-                               $top[$i++] = $row;
-                       }
-                       
-                       // return the array (duh!)
-                       return $top;
-               }
-
-               /**
-                 * Returns the plugin ID
-                 */
-               function getID() {
-                       return $this->plugid;
-               }
-
-               /**
-                 * returns the URL of the admin area for this plugin (in case there's
-                 * no such area, the returned information is invalid)
-                 */
-               function getAdminURL() {
-                       global $CONF;
-                       return $CONF['PluginURL'] . $this->getShortName() . '/';
-               }
-
-               /**
-                 * Returns the directory where the admin directory is located and
-                 * where the plugin can maintain his extra files
-                 */
-               function getDirectory() {
-                       global $DIR_PLUGINS;
-                       return $DIR_PLUGINS . $this->getShortName() . '/';
-               }
-
-               /**
-                 * Derives the short name for the plugin from the classname (all lowercase)
-                 */
-               function getShortName() {
-                       return str_replace('np_','',strtolower(get_class($this)));
-               }
-
-               var $_aOptionValues;    // oid_contextid => value
-               var $_aOptionToInfo;    // context_name => array('oid' => ..., 'default' => ...)
-               var $plugin_options;    // see getOption()
-               var $plugid;                    // plugin id
-
-
-               // constructor. Initializes some internal data
-               function NucleusPlugin() {
-                       $this->_aOptionValues = array();        // oid_contextid => value
-                       $this->_aOptionToInfo = array();        // context_name => array('oid' => ..., 'default' => ...)
-                       $this->plugin_options = 0;
-               }
-
-               // private
-               function _createOption($context, $name, $desc, $type, $defValue, $typeExtras = '') {
-                       // create in plugin_option_desc
-                       $query = 'INSERT INTO ' . sql_table('plugin_option_desc')
-                              .' (opid, oname, ocontext, odesc, otype, odef, oextra)'
-                              .' VALUES ('.intval($this->plugid)
-                             .', \''.addslashes($name).'\''
-                             .', \''.addslashes($context).'\''
-                             .', \''.addslashes($desc).'\''
-                             .', \''.addslashes($type).'\''
-                             .', \''.addslashes($defValue).'\''
-                                        .', \''.addslashes($typeExtras).'\')';
-                       sql_query($query);
-                       $oid = mysql_insert_id();
-
-                       $key = $context . '_' . $name;
-                       $this->_aOptionToInfo[$key] = array('oid' => $oid, 'default' => $defValue);
-                       return 1;
-               }
-
-
-               // private
-               function _deleteOption($context, $name) {
-                       $oid = $this->_getOID($context, $name);
-                       if (!$oid) return 0; // no such option
-
-                       // delete all things from plugin_option
-                       sql_query('DELETE FROM ' . sql_table('plugin_option') . ' WHERE oid=' . $oid);
-
-                       // delete entry from plugin_option_desc
-                       sql_query('DELETE FROM ' . sql_table('plugin_option_desc') . ' WHERE oid=' . $oid);
-
-                       // clear from cache
-                       unset($this->_aOptionToInfo[$context . '_' . $name]);
-                       $this->_aOptionValues = array();
-                       return 1;
-               }
-
-               /**
-                * private
-                * returns: 1 on success, 0 on failure
-                */
-               function _setOption($context, $contextid, $name, $value) {
-                       global $manager;
-
-                       $oid = $this->_getOID($context, $name);
-                       if (!$oid) return 0;
-
-                       // check if context id exists
-                       switch ($context) {
-                               case 'member':
-                                       if (!MEMBER::existsID($contextid)) return 0;
-                                       break;
-                               case 'blog':
-                                       if (!$manager->existsBlogID($contextid)) return 0;
-                                       break;
-                               case 'category':
-                                       if (!$manager->existsCategory($contextid)) return 0;
-                                       break;
-                case 'item':
-                    if (!$manager->existsItem($contextid, true, true)) return 0;
-                                       break;
-                               case 'global':
-                                       if ($contextid != 0) return 0;
-                                       break;
-                       }
-
-
-                       // update plugin_option
-                       sql_query('DELETE FROM ' . sql_table('plugin_option') . ' WHERE oid='.intval($oid) . ' and ocontextid='. intval($contextid));
-                       sql_query('INSERT INTO ' . sql_table('plugin_option') . ' (ovalue, oid, ocontextid) VALUES (\''.addslashes($value).'\', '. intval($oid) . ', ' . intval($contextid) . ')');
-
-                       // update cache
-                       $this->_aOptionValues[$oid . '_' . $contextid] = $value;
-
-                       return 1;
-               }
-
-               // private
-               function _getOption($context, $contextid, $name) {
-                       $oid = $this->_getOID($context, $name);
-                       if (!$oid) return '';
-
-
-                       $key = $oid . '_' . $contextid;
-
-                       if (isset($this->_aOptionValues[$key]))
-                               return $this->_aOptionValues[$key];
-
-                       // get from DB
-                       $res = sql_query('SELECT ovalue FROM ' . sql_table('plugin_option') . ' WHERE oid='.intval($oid).' and ocontextid=' . intval($contextid));
-
-                       if (!$res || (mysql_num_rows($res) == 0)) {
-                               $defVal = $this->_getDefVal($context, $name);
-                               $this->_aOptionValues[$key] = $defVal;
-
-                               // fill DB with default value
-                               $query = 'INSERT INTO ' . sql_table('plugin_option') . ' (oid,ocontextid,ovalue)'
-                                      .' VALUES ('.intval($oid).', '.intval($contextid).', \''.addslashes($defVal).'\')';
-                               sql_query($query);
-                       }
-                       else {
-                               $o = mysql_fetch_object($res);
-                               $this->_aOptionValues[$key] = $o->ovalue;
-                       }
-
-                       return $this->_aOptionValues[$key];
-               }
-
-               /**
-                * Returns assoc array with all values for a given option (one option per
-                * possible context id)
-                */
-               function _getAllOptions($context, $name) {
-                       $oid = $this->_getOID($context, $name);
-                       if (!$oid) return array();
-                       $defVal = $this->_getDefVal($context, $name);
-
-                       $aOptions = array();
-                       switch ($context) {
-                               case 'blog':
-                                       $r = sql_query('SELECT bnumber as contextid FROM ' . sql_table('blog'));
-                                       break;
-                               case 'category':
-                                       $r = sql_query('SELECT catid as contextid FROM ' . sql_table('category'));
-                                       break;
-                               case 'member':
-                                       $r = sql_query('SELECT mnumber as contextid FROM ' . sql_table('member'));
-                                       break;
-                       }
-                       if ($r) {
-                               while ($o = mysql_fetch_object($r))
-                                       $aOptions[$o->contextid] = $defVal;
-                       }
-
-                       $res = sql_query('SELECT ocontextid, ovalue FROM ' . sql_table('plugin_option') . ' WHERE oid=' . $oid);
-                       while ($o = mysql_fetch_object($res))
-                               $aOptions[$o->ocontextid] = $o->ovalue;
-
-                       return $aOptions;
-               }
-
-               /**
-                * Gets the 'option identifier' that corresponds to a given option name.
-                * When this method is called for the first time, all the OIDs for the plugin
-                * are loaded into memory, to avoid re-doing the same query all over.
-                */
-               function _getOID($context, $name) {
-                       $key = $context . '_' . $name;
-                       $info = $this->_aOptionToInfo[$key];
-                       if (is_array($info)) return $info['oid'];
-
-                       // load all OIDs for this plugin from the database
-                       $this->_aOptionToInfo = array();
-                       $query = 'SELECT oid, oname, ocontext, odef FROM ' . sql_table('plugin_option_desc') . ' WHERE opid=' . intval($this->plugid);
-                       $res = sql_query($query);
-                       while ($o = mysql_fetch_object($res)) {
-                               $k = $o->ocontext . '_' . $o->oname;
-                               $this->_aOptionToInfo[$k] = array('oid' => $o->oid, 'default' => $o->odef);
-                       }
-                       mysql_free_result($res);
-
-                       return $this->_aOptionToInfo[$key]['oid'];
-               }
-               function _getDefVal($context, $name) {
-                       $key = $context . '_' . $name;
-                       $info = $this->_aOptionToInfo[$key];
-                       if (is_array($info)) return $info['default'];
-               }
-
-
-               /**
-                * Deletes all option values for a given context and contextid
-                * (used when e.g. a blog, member or category is deleted)
-                *
-                * (static method)
-                */
-               function _deleteOptionValues($context, $contextid) {
-                       // delete all associated plugin options
-                       $aOIDs = array();
-                               // find ids
-                       $query = 'SELECT oid FROM '.sql_table('plugin_option_desc') . ' WHERE ocontext=\''.addslashes($context).'\'';
-                       $res = sql_query($query);
-                       while ($o = mysql_fetch_object($res))
-                               array_push($aOIDs, $o->oid);
-                       mysql_free_result($res);
-                               // delete those options. go go go
-                       if (count($aOIDs) > 0) {
-                               $query = 'DELETE FROM ' . sql_table('plugin_option') . ' WHERE oid in ('.implode(',',$aOIDs).') and ocontextid=' . intval($contextid);
-                               sql_query($query);
-                       }
-               }
-
-               /**
-                * splits the option's typeextra field (at ;'s) to split the meta collection
-                * @param string $typeExtra the value of the typeExtra field of an option
-                * @return array array of the meta-key/value-pairs
-                * @author TeRanEX
-                * @static
-                */
-               function getOptionMeta($typeExtra) {
-                       $tmpMeta = explode(';', $typeExtra);
-                       $meta = array();
-                       for ($i = 0; $i < count($tmpMeta); $i++) {
-                               if (($i == 0) && (!strstr($tmpMeta[0], '='))) {
-                                       // we have the select-list
-                                       $meta['select'] = $tmpMeta[0];
-                               } else {
-                                       $tmp = explode('=', $tmpMeta[$i]);
-                                       $meta[$tmp[0]] = $tmp[1];
-                               }
-                       }
-                       return $meta;
-               }
-
-               /**
-                * filters the selectlists out of the meta collection
-                * @param string $typeExtra the value of the typeExtra field of an option
-                * @return string the selectlist
-                * @author TeRanEX
-                */
-               function getOptionSelectValues($typeExtra) {
-                       $meta = NucleusPlugin::getOptionMeta($typeExtra);
-                       //the select list must always be the first part
-                       return $meta['select'];
-               }
-               
-               /**
-                * @param $aOptions: array ( 'oid' => array( 'contextid' => 'value'))
-                *        (taken from request using requestVar())
-                * @param $newContextid: integer (accepts a contextid when it is for a new 
-                *        contextid there was no id available at the moment of writing the
-                *        formcontrols into the page (by ex: itemOptions for new item)
-                * @static 
-                */
-               function _applyPluginOptions(&$aOptions, $newContextid = 0) {
-                       global $manager;
-                       if (!is_array($aOptions)) return;
-
-                       foreach ($aOptions as $oid => $values) {
-
-                               // get option type info
-                               $query = 'SELECT opid, oname, ocontext, otype, oextra, odef FROM ' . sql_table('plugin_option_desc') . ' WHERE oid=' . intval($oid);
-                               $res = sql_query($query);
-                               if ($o = mysql_fetch_object($res))
-                               {
-                                       foreach ($values as $contextid => $value) {
-                                               // retreive any metadata
-                                               $meta = NucleusPlugin::getOptionMeta($o->oextra);
-                                               
-                                               // if the option is readonly or hidden it may not be saved
-                                               if (($meta['access'] != 'readonly') && ($meta['access'] != 'hidden')) {
-                                                       
-                                                       $value = undoMagic($value);     // value comes from request
-       
-                                                       switch($o->otype) {
-                                                               case 'yesno':
-                                                                       if (($value != 'yes') && ($value != 'no')) $value = 'no';
-                                                                       break;
-                                                               default:
-                                                                       break;
-                                                       }
-                                                       
-                                                       // check the validity of numerical options
-                                                       if (($meta['datatype'] == 'numerical') && (!is_numeric($value))) { 
-                                                               //the option must be numeric, but the it isn't
-                                                               //use the default for this option
-                                                               $value = $o->odef;
-                                                       }
-       
-                                                       // decide wether we are using the contextid of newContextid
-                                                       if ($newContextid != 0) {
-                                                               $contextid = $newContextid;
-                                                       }
-                                                       
-                                                       //trigger event PrePluginOptionsUpdate to give the plugin the
-                                                       //possibility to change/validate the new value for the option
-                                                       $manager->notify('PrePluginOptionsUpdate',array('context' => $o->ocontext, 'plugid' => $o->opid, 'optionname' => $o->oname, 'contextid' => $contextid, 'value' => &$value));
-                                                       
-                                                       // delete the old value for the option
-                                                       sql_query('DELETE FROM '.sql_table('plugin_option').' WHERE oid='.intval($oid).' AND ocontextid='.intval($contextid));
-                                                       sql_query('INSERT INTO '.sql_table('plugin_option')." (oid, ocontextid, ovalue) VALUES (".intval($oid).",".intval($contextid).",'" . addslashes($value) . "')");
-                                               }
-                                       }
-                               }
-                       }
-               }
-               
-       }
-?>
+<?php  /**\r
+         * Nucleus: PHP/MySQL Weblog CMS (http://nucleuscms.org/)\r
+         * Copyright (C) 2002-2004 The Nucleus Group\r
+         *\r
+         * This program is free software; you can redistribute it and/or\r
+         * modify it under the terms of the GNU General Public License\r
+         * as published by the Free Software Foundation; either version 2\r
+         * of the License, or (at your option) any later version.\r
+         * (see nucleus/documentation/index.html#license for more info)\r
+         *\r
+         * This is an (abstract) class of which all Nucleus Plugins must inherit\r
+         *\r
+         * for more information on plugins and how to write your own, see the\r
+         * plugins.html file that is included with the Nucleus documenation\r
+         */\r
+       class NucleusPlugin {\r
+\r
+               // these functions _have_ to be redefined in your plugin\r
+\r
+               function getName() { return 'Undefined'; }\r
+               function getAuthor()  { return 'Undefined'; }\r
+               function getURL()  { return 'Undefined'; }\r
+               function getVersion() { return '0.0'; }\r
+               function getDescription() { return 'Undefined';}\r
+\r
+               // these function _may_ be redefined in your plugin\r
+\r
+               function getMinNucleusVersion() { return 150; }\r
+               function getMinNucleusPatchLevel() { return 0; }\r
+               function getEventList() { return array(); }\r
+               function getTableList() { return array(); }\r
+               function hasAdminArea() { return 0; }\r
+\r
+               function install() {}\r
+               function unInstall() {}\r
+\r
+               function init() {}\r
+\r
+               function doSkinVar($skinType) {}\r
+               function doTemplateVar(&$item) {\r
+                       $args = func_get_args();\r
+                       array_shift($args);\r
+                       array_unshift($args, 'template');\r
+                       call_user_func_array(array(&$this,'doSkinVar'),$args);\r
+               }\r
+               function doTemplateCommentsVar(&$item, &$comment) {\r
+                       $args = func_get_args();\r
+                       array_shift($args);\r
+                       array_shift($args);\r
+                       array_unshift($args, 'template');\r
+                       call_user_func_array(array(&$this,'doSkinVar'),$args);\r
+               }\r
+               function doAction($type) { return 'No Such Action'; }\r
+\r
+               /**\r
+                * Checks if a plugin supports a certain feature.\r
+                *\r
+                * @returns 1 if the feature is reported, 0 if not\r
+                * @param $feature\r
+                *              Name of the feature. See plugin documentation for more info\r
+                *                      'SqlTablePrefix' -> if the plugin uses the sql_table() method to get table names\r
+                */\r
+               function supportsFeature($feature) {\r
+                       return 0;\r
+               }\r
+\r
+               // these helper functions should not be redefined in your plugin\r
+\r
+               /**\r
+                 * Creates a new option for this plugin\r
+                 *\r
+                 * @param name\r
+                 *             A string uniquely identifying your option. (max. length is 20 characters)\r
+                 * @param description\r
+                 *             A description that will show up in the nucleus admin area (max. length: 255 characters)\r
+                 * @param type\r
+                 *             Either 'text', 'yesno' or 'password'\r
+                 *             This info is used when showing 'edit plugin options' screens\r
+                 * @param value\r
+                 *             Initial value for the option (max. value length is 128 characters)\r
+                 */\r
+               function createOption($name, $desc, $type, $defValue = '', $typeExtras = '') {\r
+                       return $this->_createOption('global', $name, $desc, $type, $defValue, $typeExtras);\r
+               }\r
+               function createBlogOption($name, $desc, $type, $defValue = '', $typeExtras = '') {\r
+                       return $this->_createOption('blog', $name, $desc, $type, $defValue, $typeExtras);\r
+               }\r
+               function createMemberOption($name, $desc, $type, $defValue = '', $typeExtras = '') {\r
+                       return $this->_createOption('member', $name, $desc, $type, $defValue, $typeExtras);\r
+               }\r
+               function createCategoryOption($name, $desc, $type, $defValue = '', $typeExtras = '') {\r
+                       return $this->_createOption('category', $name, $desc, $type, $defValue, $typeExtras);\r
+               }\r
+\r
+               /**\r
+                 * Removes the option from the database\r
+                 *\r
+                 * Note: Options get erased automatically on plugin uninstall\r
+                 */\r
+               function deleteOption($name) {\r
+                       return $this->_deleteOption('global', $name);\r
+               }\r
+               function deleteBlogOption($name) {\r
+                       return $this->_deleteOption('blog', $name);\r
+               }\r
+               function deleteMemberOption($name) {\r
+                       return $this->_deleteOption('member', $name);\r
+               }\r
+               function deleteCategoryOption($name) {\r
+                       return $this->_deleteOption('category', $name);\r
+               }\r
+\r
+               /**\r
+                 * Sets the value of an option to something new\r
+                 */\r
+               function setOption($name, $value) {\r
+                       return $this->_setOption('global', 0, $name, $value);\r
+               }\r
+               function setBlogOption($blogid, $name, $value) {\r
+                       return $this->_setOption('blog', $blogid, $name, $value);\r
+               }\r
+               function setMemberOption($memberid, $name, $value) {\r
+                       return $this->_setOption('member', $memberid, $name, $value);\r
+               }\r
+               function setCategoryOption($catid, $name, $value) {\r
+                       return $this->_setOption('category', $catid, $name, $value);\r
+               }\r
+\r
+               /**\r
+                 * Retrieves the current value for an option\r
+                 */\r
+               function getOption($name)\r
+               {\r
+                       // only request the options the very first time. On subsequent requests\r
+                       // the static collection is used to save SQL queries.\r
+                       if ($this->plugin_options == 0)\r
+                       {\r
+                               $this->plugin_options = array();        \r
+                               $query = mysql_query(\r
+                                        'SELECT d.oname as name, o.ovalue as value '.\r
+                                        'FROM '.\r
+                                        sql_table('plugin_option').' o, '.\r
+                                        sql_table('plugin_option_desc').' d '.\r
+                                        'WHERE d.opid='. intval($this->getID()).' AND d.oid=o.oid'\r
+                               );\r
+                               while ($row = mysql_fetch_object($query))\r
+                                       $this->plugin_options[strtolower($row->name)] = $row->value;\r
+                 }\r
+                 if (isset($this->plugin_options[strtolower($name)]))\r
+                               return $this->plugin_options[strtolower($name)];\r
+                 else\r
+                               return $this->_getOption('global', 0, $name);\r
+               }                 \r
+\r
+               function getBlogOption($blogid, $name) {\r
+                       return $this->_getOption('blog', $blogid, $name);\r
+               }\r
+               function getMemberOption($memberid, $name) {\r
+                       return $this->_getOption('member', $memberid, $name);\r
+               }\r
+               function getCategoryOption($catid, $name) {\r
+                       return $this->_getOption('category', $catid, $name);\r
+               }\r
+\r
+               /**\r
+                * Retrieves an associative array with the option value for each\r
+                * context id\r
+                */\r
+               function getAllBlogOptions($name) {\r
+                       return $this->_getAllOptions('blog', $name);\r
+               }\r
+               function getAllMemberOptions($name) {\r
+                       return $this->_getAllOptions('member', $name);\r
+               }\r
+               function getAllCategoryOptions($name) {\r
+                       return $this->_getAllOptions('category', $name);\r
+               }\r
+\r
+               /**\r
+                 * Returns the plugin ID\r
+                 */\r
+               function getID() {\r
+                       return $this->plugid;\r
+               }\r
+\r
+               /**\r
+                 * returns the URL of the admin area for this plugin (in case there's\r
+                 * no such area, the returned information is invalid)\r
+                 */\r
+               function getAdminURL() {\r
+                       global $CONF;\r
+                       return $CONF['PluginURL'] . $this->getShortName() . '/';\r
+               }\r
+\r
+               /**\r
+                 * Returns the directory where the admin directory is located and\r
+                 * where the plugin can maintain his extra files\r
+                 */\r
+               function getDirectory() {\r
+                       global $DIR_PLUGINS;\r
+                       return $DIR_PLUGINS . $this->getShortName() . '/';\r
+               }\r
+\r
+               /**\r
+                 * Derives the short name for the plugin from the classname (all lowercase)\r
+                 */\r
+               function getShortName() {\r
+                       return str_replace('np_','',strtolower(get_class($this)));\r
+               }\r
+\r
+               var $_aOptionValues;    // oid_contextid => value\r
+               var $_aOptionToInfo;    // context_name => array('oid' => ..., 'default' => ...)\r
+               var $plugin_options;    // see getOption()\r
+               var $plugid;                    // plugin id\r
+\r
+\r
+               // constructor. Initializes some internal data\r
+               function NucleusPlugin() {\r
+                       $this->_aOptionValues = array();        // oid_contextid => value\r
+                       $this->_aOptionToInfo = array();        // context_name => array('oid' => ..., 'default' => ...)\r
+                       $this->plugin_options = 0;\r
+               }\r
+\r
+               // private\r
+               function _createOption($context, $name, $desc, $type, $defValue, $typeExtras = '') {\r
+                       // create in plugin_option_desc\r
+                       $query = 'INSERT INTO ' . sql_table('plugin_option_desc')\r
+                              .' (opid, oname, ocontext, odesc, otype, odef, oextra)'\r
+                              .' VALUES ('.intval($this->plugid)\r
+                             .', \''.addslashes($name).'\''\r
+                             .', \''.addslashes($context).'\''\r
+                             .', \''.addslashes($desc).'\''\r
+                             .', \''.addslashes($type).'\''\r
+                             .', \''.addslashes($defValue).'\''\r
+                                        .', \''.addslashes($typeExtras).'\')';\r
+                       sql_query($query);\r
+                       $oid = mysql_insert_id();\r
+\r
+                       $key = $context . '_' . $name;\r
+                       $this->_aOptionToInfo[$key] = array('oid' => $oid, 'default' => $defValue);\r
+                       return 1;\r
+               }\r
+\r
+\r
+               // private\r
+               function _deleteOption($context, $name) {\r
+                       $oid = $this->_getOID($context, $name);\r
+                       if (!$oid) return 0; // no such option\r
+\r
+                       // delete all things from plugin_option\r
+                       sql_query('DELETE FROM ' . sql_table('plugin_option') . ' WHERE oid=' . $oid);\r
+\r
+                       // delete entry from plugin_option_desc\r
+                       sql_query('DELETE FROM ' . sql_table('plugin_option_desc') . ' WHERE oid=' . $oid);\r
+\r
+                       // clear from cache\r
+                       unset($this->_aOptionToInfo[$context . '_' . $name]);\r
+                       $this->_aOptionValues = array();\r
+                       return 1;\r
+               }\r
+\r
+               /**\r
+                * private\r
+                * returns: 1 on success, 0 on failure\r
+                */\r
+               function _setOption($context, $contextid, $name, $value) {\r
+                       global $manager;\r
+\r
+                       $oid = $this->_getOID($context, $name);\r
+                       if (!$oid) return 0;\r
+\r
+                       // check if context id exists\r
+                       switch ($context) {\r
+                               case 'member':\r
+                                       if (!MEMBER::existsID($contextid)) return 0;\r
+                                       break;\r
+                               case 'blog':\r
+                                       if (!$manager->existsBlogID($contextid)) return 0;\r
+                                       break;\r
+                               case 'category':\r
+                                       if (!$manager->existsCategory($contextid)) return 0;\r
+                                       break;\r
+                               case 'global':\r
+                                       if ($contextid != 0) return 0;\r
+                                       break;\r
+                       }\r
+\r
+\r
+                       // update plugin_option\r
+                       sql_query('DELETE FROM ' . sql_table('plugin_option') . ' WHERE oid='.intval($oid) . ' and ocontextid='. intval($contextid));\r
+                       sql_query('INSERT INTO ' . sql_table('plugin_option') . ' (ovalue, oid, ocontextid) VALUES (\''.addslashes($value).'\', '. intval($oid) . ', ' . intval($contextid) . ')');\r
+\r
+                       // update cache\r
+                       $this->_aOptionValues[$oid . '_' . $contextid] = $value;\r
+\r
+                       return 1;\r
+               }\r
+\r
+               // private\r
+               function _getOption($context, $contextid, $name) {\r
+                       $oid = $this->_getOID($context, $name);\r
+                       if (!$oid) return '';\r
+\r
+\r
+                       $key = $oid . '_' . $contextid;\r
+\r
+                       if (isset($this->_aOptionValues[$key]))\r
+                               return $this->_aOptionValues[$key];\r
+\r
+                       // get from DB\r
+                       $res = sql_query('SELECT ovalue FROM ' . sql_table('plugin_option') . ' WHERE oid='.intval($oid).' and ocontextid=' . intval($contextid));\r
+\r
+                       if (!$res || (mysql_num_rows($res) == 0)) {\r
+                               $defVal = $this->_getDefVal($context, $name);\r
+                               $this->_aOptionValues[$key] = $defVal;\r
+\r
+                               // fill DB with default value\r
+                               $query = 'INSERT INTO ' . sql_table('plugin_option') . ' (oid,ocontextid,ovalue)'\r
+                                      .' VALUES ('.intval($oid).', '.intval($contextid).', \''.addslashes($defVal).'\')';\r
+                               sql_query($query);\r
+                       }\r
+                       else {\r
+                               $o = mysql_fetch_object($res);\r
+                               $this->_aOptionValues[$key] = $o->ovalue;\r
+                       }\r
+\r
+                       return $this->_aOptionValues[$key];\r
+               }\r
+\r
+               /**\r
+                * Returns assoc array with all values for a given option (one option per\r
+                * possible context id)\r
+                */\r
+               function _getAllOptions($context, $name) {\r
+                       $oid = $this->_getOID($context, $name);\r
+                       if (!$oid) return array();\r
+                       $defVal = $this->_getDefVal($context, $name);\r
+\r
+                       $aOptions = array();\r
+                       switch ($context) {\r
+                               case 'blog':\r
+                                       $r = sql_query('SELECT bnumber as contextid FROM ' . sql_table('blog'));\r
+                                       break;\r
+                               case 'category':\r
+                                       $r = sql_query('SELECT catid as contextid FROM ' . sql_table('category'));\r
+                                       break;\r
+                               case 'member':\r
+                                       $r = sql_query('SELECT mnumber as contextid FROM ' . sql_table('member'));\r
+                                       break;\r
+                       }\r
+                       if ($r) {\r
+                               while ($o = mysql_fetch_object($r))\r
+                                       $aOptions[$o->contextid] = $defVal;\r
+                       }\r
+\r
+                       $res = sql_query('SELECT ocontextid, ovalue FROM ' . sql_table('plugin_option') . ' WHERE oid=' . $oid);\r
+                       while ($o = mysql_fetch_object($res))\r
+                               $aOptions[$o->ocontextid] = $o->ovalue;\r
+\r
+                       return $aOptions;\r
+               }\r
+\r
+               /**\r
+                * Gets the 'option identifier' that corresponds to a given option name.\r
+                * When this method is called for the first time, all the OIDs for the plugin\r
+                * are loaded into memory, to avoid re-doing the same query all over.\r
+                */\r
+               function _getOID($context, $name) {\r
+                       $key = $context . '_' . $name;\r
+                       $info = $this->_aOptionToInfo[$key];\r
+                       if (is_array($info)) return $info['oid'];\r
+\r
+                       // load all OIDs for this plugin from the database\r
+                       $this->_aOptionToInfo = array();\r
+                       $query = 'SELECT oid, oname, ocontext, odef FROM ' . sql_table('plugin_option_desc') . ' WHERE opid=' . intval($this->plugid);\r
+                       $res = sql_query($query);\r
+                       while ($o = mysql_fetch_object($res)) {\r
+                               $k = $o->ocontext . '_' . $o->oname;\r
+                               $this->_aOptionToInfo[$k] = array('oid' => $o->oid, 'default' => $o->odef);\r
+                       }\r
+                       mysql_free_result($res);\r
+\r
+                       return $this->_aOptionToInfo[$key]['oid'];\r
+               }\r
+               function _getDefVal($context, $name) {\r
+                       $key = $context . '_' . $name;\r
+                       $info = $this->_aOptionToInfo[$key];\r
+                       if (is_array($info)) return $info['default'];\r
+               }\r
+\r
+\r
+               /**\r
+                * Deletes all option values for a given context and contextid\r
+                * (used when e.g. a blog, member or category is deleted)\r
+                *\r
+                * (static method)\r
+                */\r
+               function _deleteOptionValues($context, $contextid) {\r
+                       // delete all associated plugin options\r
+                       $aOIDs = array();\r
+                               // find ids\r
+                       $query = 'SELECT oid FROM '.sql_table('plugin_option_desc') . ' WHERE ocontext=\''.addslashes($context).'\'';\r
+                       $res = sql_query($query);\r
+                       while ($o = mysql_fetch_object($res))\r
+                               array_push($aOIDs, $o->oid);\r
+                       mysql_free_result($res);\r
+                               // delete those options. go go go\r
+                       if (count($aOIDs) > 0) {\r
+                               $query = 'DELETE FROM ' . sql_table('plugin_option') . ' WHERE oid in ('.implode(',',$aOIDs).') and ocontextid=' . intval($contextid);\r
+                               sql_query($query);\r
+                       }\r
+               }\r
+\r
+               /**\r
+                * @param $aOptions: array ( 'oid' => array( 'contextid' => 'value'))\r
+                *        (taken from request using requestVar())\r
+                *\r
+                * (static method)\r
+                */\r
+               function _applyPluginOptions(&$aOptions) {\r
+                       if (!is_array($aOptions)) return;\r
+\r
+                       foreach ($aOptions as $oid => $values) {\r
+\r
+                               // get option type info\r
+                               $query = 'SELECT otype, oextra, odef FROM ' . sql_table('plugin_option_desc') . ' WHERE oid=' . intval($oid);\r
+                               $res = sql_query($query);\r
+                               if ($o = mysql_fetch_object($res))\r
+                               {\r
+                                       foreach ($values as $contextid => $value) {\r
+                                                       $value = undoMagic($value);     // value comes from request\r
+\r
+                                                       switch($o->otype) {\r
+                                                               case 'yesno':\r
+                                                                       if (($value != 'yes') && ($value != 'no')) $value = 'no';\r
+                                                                       break;\r
+                                                               default:\r
+                                                                       break;\r
+                                                       }\r
+\r
+                                                       sql_query('DELETE FROM '.sql_table('plugin_option').' WHERE oid='.intval($oid).' AND ocontextid='.intval($contextid));\r
+                                                       sql_query('INSERT INTO '.sql_table('plugin_option')." (oid, ocontextid, ovalue) VALUES (".intval($oid).",".intval($contextid).",'" . addslashes($value) . "')");\r
+\r
+                                       }\r
+                               }\r
+                       }\r
+               }\r
+               \r
+       }\r
+?>
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