gnu-social/lib/noticelist.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 Evan Prodromou <evan@status.net>
* @author Sarven Capadisli <csarven@status.net>
* @copyright 2008 StatusNet, Inc.
* @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/
*/
if (!defined('STATUSNET') && !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 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
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* @link http://status.net/
* @see Notice
* @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('ol', array('class' => 'notices xoxo'));
$cnt = 0;
while ($this->notice->fetch() && $cnt <= NOTICES_PER_PAGE) {
$cnt++;
if ($cnt > NOTICES_PER_PAGE) {
break;
}
try {
$item = $this->newListItem($this->notice);
$item->show();
} catch (Exception $e) {
// we log exceptions and continue
common_log(LOG_ERR, $e->getMessage());
continue;
}
}
$this->out->elementEnd('ol');
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$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 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
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* @link http://status.net/
* @see NoticeList
* @see ProfileNoticeListItem
*/
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class NoticeListItem extends Widget
{
/** The notice this item will show. */
var $notice = null;
/** The notice that was repeated. */
var $repeat = 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);
if (!empty($notice->repeat_of)) {
$original = Notice::staticGet('id', $notice->repeat_of);
if (empty($original)) { // could have been deleted
$this->notice = $notice;
} else {
$this->notice = $original;
$this->repeat = $notice;
}
} else {
$this->notice = $notice;
}
$this->profile = $this->notice->getProfile();
}
/**
* recipe function for displaying a single notice.
*
* This uses all the other methods to correctly display a notice. Override
* it or one of the others to fine-tune the output.
*
* @return void
*/
function show()
{
if (empty($this->notice)) {
common_log(LOG_WARNING, "Trying to show missing notice; skipping.");
return;
} else if (empty($this->profile)) {
common_log(LOG_WARNING, "Trying to show missing profile (" . $this->notice->profile_id . "); skipping.");
return;
}
$this->showStart();
if (Event::handle('StartShowNoticeItem', array($this))) {
$this->showNotice();
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$this->showNoticeAttachments();
$this->showNoticeInfo();
$this->showNoticeOptions();
Event::handle('EndShowNoticeItem', array($this));
}
$this->showEnd();
}
function showNotice()
{
$this->out->elementStart('div', 'entry-title');
$this->showAuthor();
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$this->showContent();
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$this->out->elementEnd('div');
}
function showNoticeInfo()
{
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$this->out->elementStart('div', 'entry-content');
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if (Event::handle('StartShowNoticeInfo', array($this))) {
$this->showNoticeLink();
$this->showNoticeSource();
$this->showNoticeLocation();
$this->showContext();
$this->showRepeat();
Event::handle('EndShowNoticeInfo', array($this));
}
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$this->out->elementEnd('div');
}
function showNoticeOptions()
{
if (Event::handle('StartShowNoticeOptions', array($this))) {
$user = common_current_user();
if ($user) {
$this->out->elementStart('div', 'notice-options');
$this->showFaveForm();
$this->showReplyLink();
$this->showRepeatForm();
$this->showDeleteLink();
$this->out->elementEnd('div');
}
Event::handle('EndShowNoticeOptions', array($this));
}
}
/**
* start a single notice.
*
* @return void
*/
function showStart()
{
// XXX: RDFa
// TODO: add notice_type class e.g., notice_video, notice_image
$id = (empty($this->repeat)) ? $this->notice->id : $this->repeat->id;
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$this->out->elementStart('li', array('class' => 'hentry notice',
'id' => 'notice-' . $id));
}
/**
* show the "favorite" form
*
* @return void
*/
function showFaveForm()
{
if (Event::handle('StartShowFaveForm', array($this))) {
$user = common_current_user();
if ($user) {
if ($user->hasFave($this->notice)) {
$disfavor = new DisfavorForm($this->out, $this->notice);
$disfavor->show();
} else {
$favor = new FavorForm($this->out, $this->notice);
$favor->show();
}
}
Event::handle('EndShowFaveForm', array($this));
}
}
/**
* 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->getFancyName();
}
$this->out->elementStart('a', $attrs);
$this->showAvatar();
$this->out->text(' ');
$this->showNickname();
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$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()
{
$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()
{
$this->out->raw('<span class="nickname fn">' .
htmlspecialchars($this->profile->nickname) .
'</span>');
}
/**
* 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');
}
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function showNoticeAttachments() {
$al = new AttachmentList($this->notice, $this->out);
$al->show();
}
/**
* 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 = $this->notice->bestUrl();
// above should always return an URL
assert(!empty($noticeurl));
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$this->out->elementStart('a', array('rel' => 'bookmark',
'class' => 'timestamp',
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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');
}
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/**
* show the notice location
*
* shows the notice location in the correct language.
*
* If an URL is available, makes a link. Otherwise, just a span.
*
* @return void
*/
function showNoticeLocation()
{
$id = $this->notice->id;
$location = $this->notice->getLocation();
if (empty($location)) {
return;
}
$name = $location->getName();
$lat = $this->notice->lat;
$lon = $this->notice->lon;
$latlon = (!empty($lat) && !empty($lon)) ? $lat.';'.$lon : '';
if (empty($name)) {
$latdms = $this->decimalDegreesToDMS(abs($lat));
$londms = $this->decimalDegreesToDMS(abs($lon));
// TRANS: Used in coordinates as abbreviation of north
$north = _('N');
// TRANS: Used in coordinates as abbreviation of south
$south = _('S');
// TRANS: Used in coordinates as abbreviation of east
$east = _('E');
// TRANS: Used in coordinates as abbreviation of west
$west = _('W');
$name = sprintf(
_('%1$u°%2$u\'%3$u"%4$s %5$u°%6$u\'%7$u"%8$s'),
$latdms['deg'],$latdms['min'], $latdms['sec'],($lat>0? $north:$south),
$londms['deg'],$londms['min'], $londms['sec'],($lon>0? $east:$west));
}
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$url = $location->getUrl();
$this->out->text(' ');
$this->out->elementStart('span', array('class' => 'location'));
$this->out->text(_('at'));
$this->out->text(' ');
if (empty($url)) {
$this->out->element('abbr', array('class' => 'geo',
'title' => $latlon),
$name);
} else {
$xstr = new XMLStringer(false);
$xstr->elementStart('a', array('href' => $url,
'rel' => 'external'));
$xstr->element('abbr', array('class' => 'geo',
'title' => $latlon),
$name);
$xstr->elementEnd('a');
$this->out->raw($xstr->getString());
}
$this->out->elementEnd('span');
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}
/**
* @param number $dec decimal degrees
* @return array split into 'deg', 'min', and 'sec'
*/
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function decimalDegreesToDMS($dec)
{
$deg = intval($dec);
$tempma = abs($dec) - abs($deg);
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$tempma = $tempma * 3600;
$min = floor($tempma / 60);
$sec = $tempma - ($min*60);
return array("deg"=>$deg,"min"=>$min,"sec"=>$sec);
}
/**
* 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()
{
$ns = $this->notice->getSource();
if ($ns) {
$source_name = (empty($ns->name)) ? ($ns->code ? _($ns->code) : _('web')) : _($ns->name);
$this->out->text(' ');
$this->out->elementStart('span', 'source');
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// FIXME: probably i18n issue. If "from" is followed by text, that should be a parameter to "from" (from %s).
$this->out->text(_('from'));
$this->out->text(' ');
$name = $source_name;
$url = $ns->url;
$title = null;
if (Event::handle('StartNoticeSourceLink', array($this->notice, &$name, &$url, &$title))) {
$name = $source_name;
$url = $ns->url;
}
Event::handle('EndNoticeSourceLink', array($this->notice, &$name, &$url, &$title));
// if $ns->name and $ns->url are populated we have
// configured a source attr somewhere
if (!empty($name) && !empty($url)) {
$this->out->elementStart('span', 'device');
$attrs = array(
'href' => $url,
'rel' => 'external'
);
if (!empty($title)) {
$attrs['title'] = $title;
}
$this->out->element('a', $attrs, $name);
$this->out->elementEnd('span');
} else {
$this->out->element('span', 'device', $name);
}
$this->out->elementEnd('span');
}
}
/**
* show link to notice this notice is a reply to
*
* If this notice is a reply, show a link to the notice it is replying to. The
* heavy lifting for figuring out replies happens at save time.
*
* @return void
*/
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function showContext()
{
if ($this->notice->hasConversation()) {
$conv = Conversation::staticGet(
'id',
$this->notice->conversation
);
$convurl = $conv->uri;
if (!empty($convurl)) {
$this->out->text(' ');
$this->out->element(
'a',
array(
'href' => $convurl.'#notice-'.$this->notice->id,
'class' => 'response'),
_('in context')
);
} else {
$msg = sprintf(
"Couldn't find Conversation ID %d to make 'in context'"
. "link for Notice ID %d",
$this->notice->conversation,
$this->notice->id
);
common_log(LOG_WARNING, $msg);
}
}
}
/**
* show a link to the author of repeat
*
* @return void
*/
function showRepeat()
{
if (!empty($this->repeat)) {
$repeater = Profile::staticGet('id', $this->repeat->profile_id);
$attrs = array('href' => $repeater->profileurl,
'class' => 'url');
if (!empty($repeater->fullname)) {
$attrs['title'] = $repeater->fullname . ' (' . $repeater->nickname . ')';
}
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$this->out->elementStart('span', 'repeat vcard');
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$this->out->raw(_('Repeated by'));
$this->out->elementStart('a', $attrs);
$this->out->element('span', 'fn nickname', $repeater->nickname);
$this->out->elementEnd('a');
$this->out->elementEnd('span');
}
}
/**
* 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()) {
$this->out->text(' ');
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$reply_url = common_local_url('newnotice',
array('replyto' => $this->profile->nickname, 'inreplyto' => $this->notice->id));
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$this->out->elementStart('a', array('href' => $reply_url,
'class' => 'notice_reply',
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'title' => _('Reply to this notice')));
$this->out->text(_('Reply'));
$this->out->text(' ');
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$this->out->element('span', 'notice_id', $this->notice->id);
$this->out->elementEnd('a');
}
}
/**
* if the user is the author, let them delete the notice
*
* @return void
*/
function showDeleteLink()
{
$user = common_current_user();
$todel = (empty($this->repeat)) ? $this->notice : $this->repeat;
if (!empty($user) &&
($todel->profile_id == $user->id || $user->hasRight(Right::DELETEOTHERSNOTICE))) {
$this->out->text(' ');
$deleteurl = common_local_url('deletenotice',
array('notice' => $todel->id));
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$this->out->element('a', array('href' => $deleteurl,
'class' => 'notice_delete',
'title' => _('Delete this notice')), _('Delete'));
}
}
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/**
* show the form to repeat a notice
*
* @return void
*/
function showRepeatForm()
{
$user = common_current_user();
if ($user && $user->id != $this->notice->profile_id) {
$this->out->text(' ');
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$profile = $user->getProfile();
if ($profile->hasRepeated($this->notice->id)) {
$this->out->element('span', array('class' => 'repeated',
'title' => _('Notice repeated')),
_('Repeated'));
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} else {
$rf = new RepeatForm($this->out, $this->notice);
$rf->show();
}
}
}
/**
* finish the notice
*
* Close the last elements in the notice list item
*
* @return void
*/
function showEnd()
{
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$this->out->elementEnd('li');
}
}