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Diffstat (limited to 'www/ajax/getlinkedtags.php')
| -rw-r--r-- | www/ajax/getlinkedtags.php | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/www/ajax/getlinkedtags.php b/www/ajax/getlinkedtags.php new file mode 100644 index 0000000..9bb3b1f --- /dev/null +++ b/www/ajax/getlinkedtags.php @@ -0,0 +1,141 @@ +<?php +/** + * Returns a list of tags linked to the given one(s), + * suitable for jsTree consumption. + * + * Accepted GET parameters: + * + * @param string $tag Tag for which the children tags shall be returned + * Multiple tags (separated with comma) are supported. + * If no tag is given, all top-level tags are loaded. + * @param integer $uId User ID to fetch the tags for + * @param boolean $parent Load parent tags + * + * SemanticScuttle - your social bookmark manager. + * + * PHP version 5. + * + * @category Bookmarking + * @package SemanticScuttle + * @subpackage Templates + * @author Benjamin Huynh-Kim-Bang <mensonge@users.sourceforge.net> + * @author Christian Weiske <cweiske@cweiske.de> + * @author Eric Dane <ericdane@users.sourceforge.net> + * @license GPL http://www.gnu.org/licenses/gpl.html + * @link http://sourceforge.net/projects/semanticscuttle + */ +$httpContentType = 'application/json'; +require_once '../www-header.php'; + +$tag = isset($_GET['tag']) ? $_GET['tag'] : null; +$uId = isset($_GET['uId']) ? (int)$_GET['uId'] : 0; +$loadParentTags = isset($_GET['parent']) ? (bool)$_GET['parent'] : false; + +$tags = explode(',', trim($tag)); +if (count($tags) == 1 && $tags[0] == '') { + //no tags + $tags = array(); +} + + +function assembleLinkedTagData( + $tags, $uId, $loadParentTags, SemanticScuttle_Service_Tag2Tag $t2t +) { + $tagData = array(); + + if (count($tags) == 0) { + //no tags given -> show the 4 most used top-level tags + $orphewTags = $t2t->getOrphewTags('>', $uId, 4, 'nb'); + #$orphewTags = $t2t->getOrphewTags('>', $uId); + foreach ($orphewTags as $orphewTag) { + $tags[] = $orphewTag['tag']; + } + $loadParentTags = true; + } + + if ($loadParentTags) { + //find parent tags + append the selected tags as children afterwards + foreach ($tags as $tag) { + $parentTags = $t2t->getLinkedTags($tag, '>', $uId, true); + if (count($parentTags) > 0) { + foreach ($parentTags as $parentTag) { + $ta = createTagArray( + $parentTag, true, true, true + ); + //FIXME: find out if there are subtags + $tac = createTagArray($tag, true); + $ta['children'][] = $tac; + $tagData[] = $ta; + } + } else { + //no parent tags -> display it normally + //FIXME: find out if there are subtags + $tagData[] = createTagArray($tag, true); + } + } + } else { + //just find the linked tags + foreach ($tags as $tag) { + $linkedTags = $t2t->getLinkedTags($tag, '>', $uId); + foreach ($linkedTags as $linkedTag) { + //FIXME: find out if there are subtags + $tagData[] = createTagArray($linkedTag, true); + } + } + } + + return $tagData; +} + +/** + * Creates an jsTree json array for the given tag + * + * @param string $tag Tag name + * @param boolean $hasChildren If the tag has subtags (children) or not. + * If unsure, set it to "true". + * @param boolean $isOpen If the tag has children: Is the tree node open + * or closed? + * @param boolean $autoParent If the tag is an automatically generated parent tag + * + * @return array Array to be sent back to the browser as json + */ +function createTagArray($tag, $hasChildren = true, $isOpen = false, $autoParent = false) +{ + if ($autoParent) { + $title = '(' . $tag . ')'; + } else { + $title = $tag; + } + + $ar = array( + 'data' => array( + //<a> attributes + 'title' => $title, + 'attr' => array( + 'href' => createUrl('tags', $tag) + ) + ), + //<li> attributes + 'attr' => array( + 'rel' => $tag,//needed for identifying the tag in html + ), + ); + if ($hasChildren) { + //jstree needs that to show the arrows + $ar['state'] = $isOpen ? 'open' : 'closed'; + } + if ($autoParent) { + //FIXME: use css class + $ar['data']['attr']['style'] = 'color: #AAA'; + } + + return $ar; +} + + +$tagData = assembleLinkedTagData( + $tags, 0/*$uId*/, $loadParentTags, + SemanticScuttle_Service_Factory::get('Tag2Tag') +); +echo json_encode($tagData); +?>
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