150 lines
3.9 KiB
PHP
150 lines
3.9 KiB
PHP
<?php
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/**
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* Name: Tagger
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* Description: Advanced Tagging v2
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* Author: Artanis (Erik Youngren) <artanis.00@gmail.com>
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* Do not remove this notice.
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*/
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class Tagger extends Extension {
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public function onDisplayingImage(DisplayingImageEvent $event) {
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global $page, $user;
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if($user->can("edit_image_tag") && ($event->image->is_locked() || $user->can("edit_image_lock"))) {
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$this->theme->build_tagger($page,$event);
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}
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}
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public function onSetupBuilding(SetupBuildingEvent $event) {
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$sb = new SetupBlock("Tagger");
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$sb->add_int_option("ext_tagger_search_delay", "Delay queries by ");
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$sb->add_label(" milliseconds.");
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$sb->add_label("<br/>Limit queries returning more than ");
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$sb->add_int_option("ext_tagger_tag_max");
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$sb->add_label(" tags to ");
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$sb->add_int_option("ext_tagger_limit");
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$event->panel->add_block($sb);
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}
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}
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// Tagger AJAX back-end
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class TaggerXML extends Extension {
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public function get_priority() {return 10;}
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public function onPageRequest(PageRequestEvent $event) {
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if($event->page_matches("tagger/tags")) {
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global $page;
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//$match_tags = null;
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//$image_tags = null;
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$tags=null;
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if (isset($_GET['s'])) { // tagger/tags[/...]?s=$string
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// return matching tags in XML form
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$tags = $this->match_tag_list($_GET['s']);
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} else if($event->get_arg(0)) { // tagger/tags/$int
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// return arg[1] AS image_id's tag list in XML form
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$tags = $this->image_tag_list($event->get_arg(0));
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}
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$xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n".
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"<tags>".
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$tags.
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"</tags>";
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$page->set_mode("data");
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$page->set_type("text/xml");
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$page->set_data($xml);
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}
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}
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/** @param string $s */
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private function match_tag_list ($s) {
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global $database, $config;
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$max_rows = $config->get_int("ext_tagger_tag_max",30);
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$limit_rows = $config->get_int("ext_tagger_limit",30);
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$values = array();
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// Match
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$p = strlen($s) == 1? " ":"\_";
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$sq = "%".$p.sql_escape($s)."%";
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$match = "concat(?,tag) LIKE ?";
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array_push($values,$p,$sq);
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// Exclude
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// $exclude = $event->get_arg(1)? "AND NOT IN ".$this->image_tags($event->get_arg(1)) : null;
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// Hidden Tags
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$hidden = $config->get_string('ext-tagger_show-hidden','N')=='N' ?
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"AND substring(tag,1,1) != '.'" : null;
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$q_where = "WHERE {$match} {$hidden} AND count > 0";
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// FROM based on return count
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$count = $this->count($q_where,$values);
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if ($count > $max_rows) {
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$q_from = "FROM (SELECT * FROM `tags` {$q_where} ".
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"ORDER BY count DESC LIMIT 0, {$limit_rows}) AS `c_tags`";
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$q_where = null;
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$count = array("max"=>$count);
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} else {
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$q_from = "FROM `tags`";
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$count = null;
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}
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$tags = $database->Execute("
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SELECT *
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{$q_from}
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{$q_where}
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ORDER BY tag",
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$values);
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return $this->list_to_xml($tags,"search",$s,$count);
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}
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/** @param int $image_id */
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private function image_tag_list ($image_id) {
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global $database;
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$tags = $database->Execute("
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SELECT tags.*
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FROM image_tags JOIN tags ON image_tags.tag_id = tags.id
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WHERE image_id=? ORDER BY tag", array($image_id));
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return $this->list_to_xml($tags,"image",$image_id);
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}
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/**
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* @param PDOStatement $tags
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* @param string $type
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* @param string $query
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* @param array $misc
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*/
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private function list_to_xml ($tags,$type,$query,$misc=null) {
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$r = $tags->_numOfRows;
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$s_misc = "";
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if(!is_null($misc))
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foreach($misc as $attr => $val) $s_misc .= " ".$attr."=\"".$val."\"";
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$result = "<list id=\"$type\" query=\"$query\" rows=\"$r\"{$s_misc}>";
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foreach($tags as $tag) {
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$result .= $this->tag_to_xml($tag);
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}
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return $result."</list>";
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}
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private function tag_to_xml ($tag) {
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return
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"<tag ".
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"id=\"".$tag['id']."\" ".
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"count=\"".$tag['count']."\">".
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html_escape($tag['tag']).
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"</tag>";
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}
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private function count($query,$values) {
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global $database;
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return $database->Execute(
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"SELECT COUNT(*) FROM `tags` $query",$values)->fields['COUNT(*)'];
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}
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}
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