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('GNUSOCIAL')) { 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
{
protected $userProfile;
function __construct(Notice $notice, Action $out=null, $profile=-1)
{
parent::__construct($notice, $out);
if (is_int($profile) && $profile == -1) {
$profile = Profile::current();
}
$this->userProfile = $profile;
}
/**
* 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'));
// TRANS: Header for Notices section.
$this->out->element('h2', null, _m('HEADER','Notices'));
$this->out->elementStart('ol', array('class' => 'notices threaded-notices xoxo'));
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$notices = $this->notice->fetchAll();
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$total = count($notices);
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$notices = array_slice($notices, 0, NOTICES_PER_PAGE);
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$allnotices = self::_allNotices($notices);
self::prefill($allnotices);
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$conversations = array();
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foreach ($notices as $notice) {
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// Collapse repeats into their originals...
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if ($notice->repeat_of) {
$orig = Notice::getKV('id', $notice->repeat_of);
if ($orig instanceof Notice) {
$notice = $orig;
}
}
$convo = $notice->conversation;
if (!empty($conversations[$convo])) {
// Seen this convo already -- skip!
continue;
}
$conversations[$convo] = true;
// Get the convo's root notice
$root = $notice->conversationRoot($this->userProfile);
if ($root instanceof Notice) {
$notice = $root;
}
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');
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return $total;
}
function _allNotices($notices)
{
$convId = array();
foreach ($notices as $notice) {
$convId[] = $notice->conversation;
}
$convId = array_unique($convId);
$allMap = Notice::listGet('conversation', $convId);
$allArray = array();
foreach ($allMap as $convId => $convNotices) {
$allArray = array_merge($allArray, $convNotices);
}
return $allArray;
}
/**
* 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 $notice)
{
return new ThreadedNoticeListItem($notice, $this->out, $this->userProfile);
}
}
/**
* 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
{
protected $userProfile = null;
function __construct(Notice $notice, Action $out=null, $profile=null)
{
parent::__construct($notice, $out);
$this->userProfile = $profile;
}
function initialItems()
{
return 3;
}
/**
* finish the notice
*
* Close the last elements in the notice list item
*
* @return void
*/
function showEnd()
{
$max = $this->initialItems();
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if (!$this->repeat) {
$stream = new ConversationNoticeStream($this->notice->conversation, $this->userProfile);
$notice = $stream->getNotices(0, $max + 2);
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$notices = array();
$cnt = 0;
$moreCutoff = null;
while ($notice->fetch()) {
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if (Event::handle('StartAddNoticeReply', array($this, $this->notice, $notice))) {
// Don't list repeats as separate notices in a conversation
if (!empty($notice->repeat_of)) {
continue;
}
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if ($notice->id == $this->notice->id) {
// Skip!
continue;
}
$cnt++;
if ($cnt > $max) {
// boo-yah
$moreCutoff = clone($notice);
break;
}
$notices[] = clone($notice); // *grumble* inefficient as hell
Event::handle('EndAddNoticeReply', array($this, $this->notice, $notice));
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}
}
if (Event::handle('StartShowThreadedNoticeTail', array($this, $this->notice, &$notices))) {
$threadActive = count($notices) > 0; // has this thread had any activity?
$this->out->elementStart('ul', 'notices threaded-replies xoxo');
if (Event::handle('StartShowThreadedNoticeTailItems', array($this, $this->notice, &$threadActive))) {
// Repeats and Faves/Likes are handled in plugins.
Event::handle('EndShowThreadedNoticeTailItems', array($this, $this->notice, &$threadActive));
}
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if (count($notices)>0) {
if ($moreCutoff) {
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$item = new ThreadedNoticeListMoreItem($moreCutoff, $this->out, count($notices));
$item->show();
}
foreach (array_reverse($notices) as $notice) {
if (Event::handle('StartShowThreadedNoticeSub', array($this, $this->notice, $notice))) {
$item = new ThreadedNoticeListSubItem($notice, $this->notice, $this->out);
$item->show();
Event::handle('EndShowThreadedNoticeSub', array($this, $this->notice, $notice));
}
}
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}
Event::handle('EndShowThreadedNoticeTail', array($this, $this->notice, $notices));
$this->out->elementEnd('ul');
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}
}
parent::showEnd();
}
}
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// @todo FIXME: needs documentation.
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class ThreadedNoticeListSubItem extends NoticeListItem
{
protected $root = null;
function __construct(Notice $notice, $root, $out)
{
$this->root = $root;
parent::__construct($notice, $out);
}
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function avatarSize()
{
return AVATAR_STREAM_SIZE; // @fixme would like something in between
}
function showNoticeLocation()
{
//
}
function showNoticeSource()
{
//
}
function getReplyProfiles()
{
$all = parent::getReplyProfiles();
$profiles = array();
$rootAuthor = $this->root->getProfile();
foreach ($all as $profile) {
if ($profile->id != $rootAuthor->id) {
$profiles[] = $profile;
}
}
return $profiles;
}
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function showEnd()
{
$threadActive = null; // unused here for now, but maybe in the future?
if (Event::handle('StartShowThreadedNoticeTailItems', array($this, $this->notice, &$threadActive))) {
// Repeats and Faves/Likes are handled in plugins.
Event::handle('EndShowThreadedNoticeTailItems', array($this, $this->notice, &$threadActive));
}
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parent::showEnd();
}
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}
/**
* Placeholder for loading more replies...
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*/
class ThreadedNoticeListMoreItem extends NoticeListItem
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{
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protected $cnt;
function __construct(Notice $notice, Action $out, $cnt)
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{
parent::__construct($notice, $out);
$this->cnt = $cnt;
}
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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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}
function showEnd()
{
$this->out->elementEnd('li');
}
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function showMiniForm()
{
$id = $this->notice->conversation;
$url = common_local_url('conversation', array('id' => $id));
$n = Conversation::noticeCount($id) - 1;
// TRANS: Link to show replies for a notice.
// TRANS: %d is the number of replies to a notice and used for plural.
$msg = sprintf(_m('Show reply', 'Show all %d replies', $n), $n);
$this->out->element('a', array('href' => $url), $msg);
}
}