6e2f045837
These extra `<link>` elements only appear on pages where pagination makes sense. They trigger functionality in some user agents, such as Opera's Navigation Bar for more easily navigating forward and backwards across a paged set of notices, messages, or group lists, etc.
120 lines
4.0 KiB
PHP
120 lines
4.0 KiB
PHP
<?php
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/*
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* Laconica - a distributed open-source microblogging tool
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* Copyright (C) 2008, Controlez-Vous, Inc.
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*
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* 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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if (!defined('LACONICA')) { exit(1); }
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class TagAction extends Action
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{
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function prepare($args)
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{
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parent::prepare($args);
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$taginput = $this->trimmed('tag');
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$this->tag = common_canonical_tag($taginput);
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if (!$this->tag) {
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common_redirect(common_local_url('publictagcloud'), 301);
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return false;
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}
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if ($this->tag != $taginput) {
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common_redirect(common_local_url('tag', array('tag' => $this->tag)));
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}
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$this->page = ($this->arg('page')) ? ($this->arg('page')+0) : 1;
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common_set_returnto($this->selfUrl());
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return true;
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}
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function title()
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{
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if ($this->page == 1) {
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return sprintf(_("Notices tagged with %s"), $this->tag);
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} else {
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return sprintf(_("Notices tagged with %s, page %d"),
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$this->tag,
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$this->page);
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}
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}
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function handle($args)
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{
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parent::handle($args);
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$this->showPage();
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}
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function showFeeds()
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{
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$this->element('link', array('rel' => 'alternate',
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'href' => common_local_url('tagrss', array('tag' => $this->tag)),
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'type' => 'application/rss+xml',
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'title' => sprintf(_('Feed for tag %s'), $this->tag)));
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}
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/**
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* Output document relationship links
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*
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* @return void
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*/
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function showRelationshipLinks()
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{
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// Machine-readable pagination
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if ($this->page > 1) {
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$this->element('link', array('rel' => 'next',
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'href' => common_local_url('tag',
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array('tag' => $this->tag,
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'page' => $this->page - 1)),
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'title' => _('Next Notices')));
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}
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$this->element('link', array('rel' => 'prev',
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'href' => common_local_url('tag',
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array('tag' => $this->tag,
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'page' => $this->page + 1)),
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'title' => _('Previous Notices')));
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}
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function showPageNotice()
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{
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return sprintf(_('Messages tagged "%s", most recent first'), $this->tag);
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}
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function showExportData()
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{
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$fl = new FeedList($this);
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$fl->show(array(0=>array('href'=>common_local_url('tagrss', array('tag' => $this->tag)),
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'type' => 'rss',
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'version' => 'RSS 1.0',
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'item' => 'tagrss')));
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}
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function showContent()
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{
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$notice = Notice_tag::getStream($this->tag, (($this->page-1)*NOTICES_PER_PAGE), NOTICES_PER_PAGE + 1);
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$nl = new NoticeList($notice, $this);
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$cnt = $nl->show();
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$this->pagination($this->page > 1, $cnt > NOTICES_PER_PAGE,
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$this->page, 'tag', array('tag' => $this->tag));
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}
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}
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