gnu-social/lib/threadednoticelist.php

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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* widget for displaying a list of notices
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category UI
* @package StatusNet
* @author Brion Vibber <brion@status.net>
* @copyright 2011 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET') && !defined('LACONICA')) {
exit(1);
}
/**
* widget for displaying a list of notices
*
* There are a number of actions that display a list of notices, in
* reverse chronological order. This widget abstracts out most of the
* code for UI for notice lists. It's overridden to hide some
* data for e.g. the profile page.
*
* @category UI
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
* @see Notice
* @see NoticeListItem
* @see ProfileNoticeList
*/
class ThreadedNoticeList extends NoticeList
{
/**
* show the list of notices
*
* "Uses up" the stream by looping through it. So, probably can't
* be called twice on the same list.
*
* @return int count of notices listed.
*/
function show()
{
$this->out->elementStart('div', array('id' =>'notices_primary'));
$this->out->element('h2', null, _('Notices'));
$this->out->elementStart('ol', array('class' => 'notices threaded-notices xoxo'));
$cnt = 0;
$conversations = array();
while ($this->notice->fetch() && $cnt <= NOTICES_PER_PAGE) {
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$cnt++;
if ($cnt > NOTICES_PER_PAGE) {
break;
}
$convo = $this->notice->conversation;
if (!empty($conversations[$convo])) {
// Seen this convo already -- skip!
continue;
}
$conversations[$convo] = true;
// Get the convo's root notice
// @fixme stream goes in wrong direction, this needs sane caching
//$notice = Notice::conversationStream($convo, 0, 1);
//$notice->fetch();
$notice = new Notice();
$notice->conversation = $this->notice->conversation;
$notice->orderBy('CREATED');
$notice->limit(1);
$notice->find(true);
try {
$item = $this->newListItem($notice);
$item->show();
} catch (Exception $e) {
// we log exceptions and continue
common_log(LOG_ERR, $e->getMessage());
continue;
}
}
$this->out->elementEnd('ol');
$this->out->elementEnd('div');
return $cnt;
}
/**
* returns a new list item for the current notice
*
* Recipe (factory?) method; overridden by sub-classes to give
* a different list item class.
*
* @param Notice $notice the current notice
*
* @return NoticeListItem a list item for displaying the notice
*/
function newListItem($notice)
{
return new ThreadedNoticeListItem($notice, $this->out);
}
}
/**
* widget for displaying a single notice
*
* This widget has the core smarts for showing a single notice: what to display,
* where, and under which circumstances. Its key method is show(); this is a recipe
* that calls all the other show*() methods to build up a single notice. The
* ProfileNoticeListItem subclass, for example, overrides showAuthor() to skip
* author info (since that's implicit by the data in the page).
*
* @category UI
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
* @see NoticeList
* @see ProfileNoticeListItem
*/
class ThreadedNoticeListItem extends NoticeListItem
{
const INITIAL_ITEMS = 3;
function showContext()
{
// Silence!
}
/**
* finish the notice
*
* Close the last elements in the notice list item
*
* @return void
*/
function showEnd()
{
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if (!$this->repeat) {
$notice = Notice::conversationStream($this->notice->conversation, 0, self::INITIAL_ITEMS + 2);
$notices = array();
$cnt = 0;
$moreCutoff = null;
while ($notice->fetch()) {
if ($notice->id == $this->notice->id) {
// Skip!
continue;
}
$cnt++;
if ($cnt > self::INITIAL_ITEMS) {
// boo-yah
$moreCutoff = clone($notice);
break;
}
$notices[] = clone($notice); // *grumble* inefficient as hell
}
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if ($notices) {
$this->out->elementStart('ul', 'notices threaded-replies xoxo');
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if ($moreCutoff) {
$item = new ThreadedNoticeListMoreItem($moreCutoff, $this->out);
$item->show();
}
foreach (array_reverse($notices) as $notice) {
$item = new ThreadedNoticeListSubItem($notice, $this->out);
$item->show();
}
// @fixme do a proper can-post check that's consistent
// with the JS side
if (common_current_user()) {
$item = new ThreadedNoticeListReplyItem($notice, $this->out);
$item->show();
}
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$this->out->elementEnd('ul');
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}
}
parent::showEnd();
}
}
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class ThreadedNoticeListSubItem extends NoticeListItem
{
function avatarSize()
{
return AVATAR_STREAM_SIZE; // @fixme would like something in between
}
function showNoticeLocation()
{
//
}
function showNoticeSource()
{
//
}
function showContext()
{
//
}
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}
/**
* Placeholder for loading more replies...
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*/
class ThreadedNoticeListMoreItem extends NoticeListItem
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{
/**
* recipe function for displaying a single notice.
*
* This uses all the other methods to correctly display a notice. Override
* it or one of the others to fine-tune the output.
*
* @return void
*/
function show()
{
$this->showStart();
$this->showMiniForm();
$this->showEnd();
}
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/**
* start a single notice.
*
* @return void
*/
function showStart()
{
$this->out->elementStart('li', array('class' => 'notice-reply-comments'));
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}
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function showMiniForm()
{
$id = $this->notice->conversation;
$url = common_local_url('conversation', array('id' => $id)) . '#notice-' . $this->notice->id;
$notice = new Notice();
$notice->conversation = $id;
$n = $notice->count() - 1;
$msg = sprintf(_m('Show %d reply', 'Show all %d replies', $n), $n);
$this->out->element('a', array('href' => $url), $msg);
}
}
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/**
* Placeholder for reply form...
* Same as get added at runtime via SN.U.NoticeInlineReplyPlaceholder
*/
class ThreadedNoticeListReplyItem extends NoticeListItem
{
/**
* recipe function for displaying a single notice.
*
* This uses all the other methods to correctly display a notice. Override
* it or one of the others to fine-tune the output.
*
* @return void
*/
function show()
{
$this->showStart();
$this->showMiniForm();
$this->showEnd();
}
/**
* start a single notice.
*
* @return void
*/
function showStart()
{
$this->out->elementStart('li', array('class' => 'notice-reply-placeholder'));
}
function showMiniForm()
{
$this->out->element('input', array('class' => 'placeholder',
'value' => _('Write a reply...')));
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}
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}