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<?php
/**
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Esther Brunner <wikidesign@gmail.com>
*/
/**
* Action part of the tag plugin, handles tag display and index updates
*/
class action_plugin_tag extends DokuWiki_Action_Plugin {
/**
* register the eventhandlers
*
* @param Doku_Event_Handler $contr
*/
function register(Doku_Event_Handler $contr) {
$contr->register_hook('ACTION_ACT_PREPROCESS', 'BEFORE', $this, '_handle_act', array());
$contr->register_hook('TPL_ACT_UNKNOWN', 'BEFORE', $this, '_handle_tpl_act', array());
$contr->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, '_handle_keywords', array());
if($this->getConf('toolbar_icon')) $contr->register_hook('TOOLBAR_DEFINE', 'AFTER', $this, 'insert_toolbar_button', array ());
$contr->register_hook('INDEXER_VERSION_GET', 'BEFORE', $this, '_indexer_version', array());
$contr->register_hook('INDEXER_PAGE_ADD', 'BEFORE', $this, '_indexer_index_tags', array());
}
/**
* Add a version string to the index so it is rebuilt
* whenever the stored data format changes.
*/
function _indexer_version(Doku_Event $event, $param) {
global $conf;
$event->data['plugin_tag'] = '0.2.deaccent='.$conf['deaccent'];
}
/**
* Add all data of the subject metadata to the metadata index.
*/
function _indexer_index_tags(Doku_Event $event, $param) {
/* @var helper_plugin_tag $helper */
if ($helper = $this->loadHelper('tag')) {
// make sure the tags are cleaned and no duplicate tags are added to the index
$tags = p_get_metadata($event->data['page'], 'subject');
if (!is_array($tags)) {
$event->data['metadata']['subject'] = array();
} else {
$event->data['metadata']['subject'] = $helper->_cleanTagList($tags);
}
}
}
/**
* catch tag action
*
* @author Michael Klier <chi@chimeric.de>
*/
function _handle_act(Doku_Event $event, $param) {
if($event->data != 'showtag') return;
$event->preventDefault();
}
/**
* Display the tag page
*
* @param Doku_Event $event The TPL_ACT_UNKNOWN event
* @param array $param optional parameters (unused)
*/
function _handle_tpl_act(Doku_Event $event, $param) {
global $lang;
if($event->data != 'showtag') return;
$event->preventDefault();
$tagns = $this->getConf('namespace');
$flags = explode(',', str_replace(" ", "", $this->getConf('pagelist_flags')));
$tag = trim(str_replace($this->getConf('namespace').':', '', $_REQUEST['tag']));
$ns = trim($_REQUEST['ns']);
/* @var helper_plugin_tag $helper */
if ($helper = $this->loadHelper('tag')) $pages = $helper->getTopic($ns, '', $tag);
if(!empty($pages)) {
// let Pagelist Plugin do the work for us
if ((!$pagelist = $this->loadHelper('pagelist'))) {
return false;
}
/* @var helper_plugin_pagelist $pagelist */
$pagelist->setFlags($flags);
$pagelist->startList();
foreach ($pages as $page) {
$pagelist->addPage($page);
}
print '<h1>TAG: ' . hsc(str_replace('_', ' ', $_REQUEST['tag'])) . '</h1>' . DOKU_LF;
print '<div class="level1">' . DOKU_LF;
print $pagelist->finishList();
print '</div>' . DOKU_LF;
} else {
print '<div class="level1"><p>' . $lang['nothingfound'] . '</p></div>';
}
}
/**
* Inserts the tag toolbar button
*/
function insert_toolbar_button(Doku_Event $event, $param) {
$event->data[] = array(
'type' => 'format',
'title' => $this->getLang('toolbar_icon'),
'icon' => '../../plugins/tag/images/tag-toolbar.png',
'open' => '{{tag>',
'close' => '}}'
);
}
/**
* Prevent displaying underscores instead of blanks inside the page keywords
*/
function _handle_keywords(Doku_Event $event) {
global $ID;
// Fetch tags for the page; stop proceeding when no tags specified
$tags = p_get_metadata($ID, 'subject', METADATA_DONT_RENDER);
if(is_null($tags)) true;
// Replace underscores with blanks
foreach($event->data['meta'] as &$meta) {
if($meta['name'] == 'keywords') {
$meta['content'] = str_replace('_', ' ', $meta['content']);
}
}
}
}
// vim:ts=4:sw=4:et:
|
