gnu-social/lib/noticelist.php

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<?php
/**
* Laconica, 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 Laconica
* @author Evan Prodromou <evan@controlyourself.ca>
* @author Sarven Capadisli <csarven@controlyourself.ca>
* @copyright 2008 Control Yourself, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
*/
if (!defined('LACONICA')) {
exit(1);
}
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require_once INSTALLDIR.'/lib/favorform.php';
require_once INSTALLDIR.'/lib/disfavorform.php';
require_once INSTALLDIR.'/lib/attachmentlist.php';
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/**
* 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 Laconica
* @author Evan Prodromou <evan@controlyourself.ca>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
* @see Notice
* @see StreamAction
* @see NoticeListItem
* @see ProfileNoticeList
*/
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class NoticeList extends Widget
{
/** the current stream of notices being displayed. */
var $notice = null;
/**
* constructor
*
* @param Notice $notice stream of notices from DB_DataObject
*/
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function __construct($notice, $out=null)
{
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parent::__construct($out);
$this->notice = $notice;
}
/**
* show the list of notices
*
* "Uses up" the stream by looping through it. So, probably can't
* be called twice on the same list.
*
* @return int count of notices listed.
*/
function show()
{
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$this->out->elementStart('div', array('id' =>'notices_primary'));
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$this->out->element('h2', null, _('Notices'));
$this->out->elementStart('ul', array('class' => 'notices'));
$cnt = 0;
while ($this->notice->fetch() && $cnt <= NOTICES_PER_PAGE) {
$cnt++;
if ($cnt > NOTICES_PER_PAGE) {
break;
}
$item = $this->newListItem($this->notice);
$item->show();
}
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$this->out->elementEnd('ul');
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$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)
{
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return new NoticeListItem($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 Laconica
* @author Evan Prodromou <evan@controlyourself.ca>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
* @see NoticeList
* @see ProfileNoticeListItem
*/
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class NoticeListItem extends Widget
{
/** The notice this item will show. */
var $notice = null;
/** The profile of the author of the notice, extracted once for convenience. */
var $profile = null;
/**
* constructor
*
* Also initializes the profile attribute.
*
* @param Notice $notice The notice we'll display
*/
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function __construct($notice, $out=null)
{
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parent::__construct($out);
$this->notice = $notice;
$this->profile = $notice->getProfile();
}
/**
* 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->showNotice();
$this->showNoticeAttachmentsIcon();
$this->showNoticeInfo();
$this->showNoticeOptions();
$this->showNoticeAttachments();
$this->showEnd();
}
function showNotice()
{
$this->out->elementStart('div', 'entry-title');
$this->showAuthor();
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$this->showContent();
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$this->out->elementEnd('div');
}
function showNoticeAttachments() {
if ($this->isUsedInList()) {
return;
}
$al = new AttachmentList($this->notice, $this->out);
$al->show();
}
function isUsedInList() {
return 'shownotice' !== $this->out->args['action'];
}
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function attachmentCount($discriminant = true) {
$file_oembed = new File_oembed;
$query = "select count(*) as c from file_oembed join file_to_post on file_oembed.file_id = file_to_post.file_id where post_id=" . $this->notice->id;
$file_oembed->query($query);
$file_oembed->fetch();
return intval($file_oembed->c);
}
function showNoticeAttachmentsIcon()
{
if (!($this->isUsedInList() && ($count = $this->attachmentCount()))) {
return;
}
$href = common_local_url('shownotice', array('notice' => $this->notice->id)) . '#attachments';
$this->out->elementStart('p', 'entry-attachments');
$this->out->element('a', array('href' => $href, 'title' => "# of attachments: $count"), $count === 1 ? '' : $count);
$this->out->elementEnd('p');
}
function showNoticeInfo()
{
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$this->out->elementStart('div', 'entry-content');
$this->showNoticeLink();
$this->showNoticeSource();
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$this->showContext();
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$this->out->elementEnd('div');
}
function showNoticeOptions()
{
$user = common_current_user();
if ($user) {
$this->out->elementStart('div', 'notice-options');
$this->showFaveForm();
$this->showReplyLink();
$this->showDeleteLink();
$this->out->elementEnd('div');
}
}
/**
* start a single notice.
*
* @return void
*/
function showStart()
{
// XXX: RDFa
// TODO: add notice_type class e.g., notice_video, notice_image
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$this->out->elementStart('li', array('class' => 'hentry notice',
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'id' => 'notice-' . $this->notice->id));
}
/**
* show the "favorite" form
*
* @return void
*/
function showFaveForm()
{
$user = common_current_user();
if ($user) {
if ($user->hasFave($this->notice)) {
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$disfavor = new DisfavorForm($this->out, $this->notice);
$disfavor->show();
} else {
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$favor = new FavorForm($this->out, $this->notice);
$favor->show();
}
}
}
/**
* show the author of a notice
*
* By default, this shows the avatar and (linked) nickname of the author.
*
* @return void
*/
function showAuthor()
{
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$this->out->elementStart('span', 'vcard author');
$attrs = array('href' => $this->profile->profileurl,
'class' => 'url');
if (!empty($this->profile->fullname)) {
$attrs['title'] = $this->profile->fullname . ' (' . $this->profile->nickname . ') ';
}
$this->out->elementStart('a', $attrs);
$this->showAvatar();
$this->showNickname();
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$this->out->elementEnd('a');
$this->out->elementEnd('span');
}
/**
* show the avatar of the notice's author
*
* This will use the default avatar if no avatar is assigned for the author.
* It makes a link to the author's profile.
*
* @return void
*/
function showAvatar()
{
if ('shownotice' === $this->out->trimmed('action')) {
$avatar_size = AVATAR_PROFILE_SIZE;
} else {
$avatar_size = AVATAR_STREAM_SIZE;
}
$avatar = $this->profile->getAvatar($avatar_size);
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$this->out->element('img', array('src' => ($avatar) ?
$avatar->displayUrl() :
Avatar::defaultImage($avatar_size),
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'class' => 'avatar photo',
'width' => $avatar_size,
'height' => $avatar_size,
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'alt' =>
($this->profile->fullname) ?
$this->profile->fullname :
$this->profile->nickname));
}
/**
* show the nickname of the author
*
* Links to the author's profile page
*
* @return void
*/
function showNickname()
{
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$this->out->element('span', array('class' => 'nickname fn'),
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$this->profile->nickname);
}
/**
* show the content of the notice
*
* Shows the content of the notice. This is pre-rendered for efficiency
* at save time. Some very old notices might not be pre-rendered, so
* they're rendered on the spot.
*
* @return void
*/
function showContent()
{
// FIXME: URL, image, video, audio
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$this->out->elementStart('p', array('class' => 'entry-content'));
if ($this->notice->rendered) {
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$this->out->raw($this->notice->rendered);
} else {
// XXX: may be some uncooked notices in the DB,
// we cook them right now. This should probably disappear in future
// versions (>> 0.4.x)
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$this->out->raw(common_render_content($this->notice->content, $this->notice));
}
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$this->out->elementEnd('p');
}
/**
* show the link to the main page for the notice
*
* Displays a link to the page for a notice, with "relative" time. Tries to
* get remote notice URLs correct, but doesn't always succeed.
*
* @return void
*/
function showNoticeLink()
{
$noticeurl = common_local_url('shownotice',
array('notice' => $this->notice->id));
// XXX: we need to figure this out better. Is this right?
if (strcmp($this->notice->uri, $noticeurl) != 0 &&
preg_match('/^http/', $this->notice->uri)) {
$noticeurl = $this->notice->uri;
}
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$this->out->elementStart('dl', 'timestamp');
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$this->out->element('dt', null, _('Published'));
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$this->out->elementStart('dd', null);
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$this->out->elementStart('a', array('rel' => 'bookmark',
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'href' => $noticeurl));
$dt = common_date_iso8601($this->notice->created);
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$this->out->element('abbr', array('class' => 'published',
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'title' => $dt),
common_date_string($this->notice->created));
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$this->out->elementEnd('a');
$this->out->elementEnd('dd');
$this->out->elementEnd('dl');
}
/**
* Show the source of the notice
*
* Either the name (and link) of the API client that posted the notice,
* or one of other other channels.
*
* @return void
*/
function showNoticeSource()
{
if ($this->notice->source) {
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$this->out->elementStart('dl', 'device');
$this->out->element('dt', null, _('From'));
$source_name = _($this->notice->source);
switch ($this->notice->source) {
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case 'web':
case 'xmpp':
case 'mail':
case 'omb':
case 'system':
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case 'api':
$this->out->element('dd', null, $source_name);
break;
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default:
$ns = Notice_source::staticGet($this->notice->source);
if ($ns) {
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$this->out->elementStart('dd', null);
$this->out->element('a', array('href' => $ns->url,
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'rel' => 'external'),
$ns->name);
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$this->out->elementEnd('dd');
} else {
$this->out->element('dd', null, $source_name);
}
break;
}
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$this->out->elementEnd('dl');
}
}
/**
* show link to notice this notice is a reply to
*
* If this notice is a reply, show a link to the notice it is replying to. The
* heavy lifting for figuring out replies happens at save time.
*
* @return void
*/
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function showContext()
{
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// XXX: also show context if there are replies to this notice
if (!empty($this->notice->conversation)
&& $this->notice->conversation != $this->notice->id) {
$convurl = common_local_url('conversation',
array('id' => $this->notice->conversation));
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$this->out->elementStart('dl', 'response');
$this->out->element('dt', null, _('To'));
$this->out->elementStart('dd');
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$this->out->element('a', array('href' => $convurl),
_('in context'));
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$this->out->elementEnd('dd');
$this->out->elementEnd('dl');
}
}
/**
* show a link to reply to the current notice
*
* Should either do the reply in the current notice form (if available), or
* link out to the notice-posting form. A little flakey, doesn't always work.
*
* @return void
*/
function showReplyLink()
{
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if (common_logged_in()) {
$reply_url = common_local_url('newnotice',
array('replyto' => $this->profile->nickname));
$this->out->elementStart('dl', 'notice_reply');
$this->out->element('dt', null, _('Reply to this notice'));
$this->out->elementStart('dd');
$this->out->elementStart('a', array('href' => $reply_url,
'title' => _('Reply to this notice')));
$this->out->text(_('Reply'));
$this->out->element('span', 'notice_id', $this->notice->id);
$this->out->elementEnd('a');
$this->out->elementEnd('dd');
$this->out->elementEnd('dl');
}
}
/**
* if the user is the author, let them delete the notice
*
* @return void
*/
function showDeleteLink()
{
$user = common_current_user();
if ($user && $this->notice->profile_id == $user->id) {
$deleteurl = common_local_url('deletenotice',
array('notice' => $this->notice->id));
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$this->out->elementStart('dl', 'notice_delete');
$this->out->element('dt', null, _('Delete this notice'));
$this->out->elementStart('dd');
$this->out->element('a', array('href' => $deleteurl,
'title' => _('Delete this notice')), _('Delete'));
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$this->out->elementEnd('dd');
$this->out->elementEnd('dl');
}
}
/**
* finish the notice
*
* Close the last elements in the notice list item
*
* @return void
*/
function showEnd()
{
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$this->out->elementEnd('li');
}
}