forked from GNUsocial/gnu-social
129 lines
3.7 KiB
PHP
129 lines
3.7 KiB
PHP
<?php
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/**
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* StatusNet, the distributed open-source microblogging tool
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*
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* Base class for sections showing tag clouds
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*
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* PHP version 5
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Widget
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2009 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET') && !defined('LACONICA')) {
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exit(1);
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}
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define('TAGS_PER_SECTION', 10);
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/**
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* Base class for sections
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*
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* These are the widgets that show interesting data about a person
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* group, or site.
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*
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* @category Widget
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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class TagCloudSection extends Section
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{
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function showContent()
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{
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$tags = $this->getTags();
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if (!$tags) {
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// TRANS: Content displayed in a tag cloud section if there are no tags.
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$this->out->element('p', null, _m('NOTAGS','None'));
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return false;
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}
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$cnt = 0;
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$tw = array();
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$sum = 0;
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while ($tags->fetch() && ++$cnt <= TAGS_PER_SECTION) {
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$tw[$tags->tag] = $tags->weight;
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$sum += $tags->weight;
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}
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if ($cnt == 0) {
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// TRANS: Content displayed in a tag cloud section if there are no tags.
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$this->out->element('p', null, _m('NOTAGS','None'));
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return false;
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}
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ksort($tw);
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$this->out->elementStart('ul', 'tags xoxo tag-cloud');
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foreach ($tw as $tag => $weight) {
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$this->showTag($tag, $weight, ($sum == 0) ? 0 : $weight/$sum);
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}
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$this->out->elementEnd('ul');
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return ($cnt > TAGS_PER_SECTION);
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}
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function getTags()
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{
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return null;
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}
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function showTag($tag, $weight, $relative)
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{
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if ($relative > 0.1) {
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$rel = 'tag-cloud-7';
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} else if ($relative > 0.05) {
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$rel = 'tag-cloud-6';
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} else if ($relative > 0.02) {
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$rel = 'tag-cloud-5';
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} else if ($relative > 0.01) {
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$rel = 'tag-cloud-4';
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} else if ($relative > 0.005) {
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$rel = 'tag-cloud-3';
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} else if ($relative > 0.002) {
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$rel = 'tag-cloud-2';
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} else {
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$rel = 'tag-cloud-1';
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}
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$this->out->elementStart('li', $rel);
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$this->out->element('a', array('href' => $this->tagUrl($tag)),
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$tag);
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$this->out->elementEnd('li');
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}
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function tagUrl($tag)
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{
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if ($this->out instanceof ShowstreamAction) {
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return common_local_url('showstream', array('nickname' => $this->out->getTarget()->getNickname(), 'tag' => $tag));
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}
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return common_local_url('tag', array('tag' => $tag));
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}
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function divId()
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{
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return 'tagcloud';
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}
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}
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