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>
* @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);
}
/**
* 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
*/
class NoticeList
{
/** the current stream of notices being displayed. */
var $notice = null;
/**
* constructor
*
* @param Notice $notice stream of notices from DB_DataObject
*/
function __construct($notice)
{
$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()
{
common_element_start('ul', array('id' => '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();
}
common_element_end('ul');
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 NoticeListItem($notice);
}
}
/**
* 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
*/
class NoticeListItem
{
/** 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 $notice The notice we'll display
*/
function __construct($notice)
{
$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->showFaveForm();
$this->showAuthor();
$this->showContent();
$this->startTimeSection();
$this->showNoticeLink();
$this->showNoticeSource();
$this->showReplyTo();
$this->showReplyLink();
$this->showDeleteLink();
$this->endTimeSection();
$this->showEnd();
}
/**
* start a single notice.
*
* @return void
*/
function showStart()
{
// XXX: RDFa
// TODO: add notice_type class e.g., notice_video, notice_image
common_element_start('li', array('class' => 'hentry notice',
'id' => 'notice-' . $this->notice->id));
}
/**
* show the "favorite" form
*
* @return void
*/
function showFaveForm()
{
$user = common_current_user();
if ($user) {
if ($user->hasFave($this->notice)) {
common_disfavor_form($this->notice);
} else {
common_favor_form($this->notice);
}
}
}
/**
* show the author of a notice
*
* By default, this shows the avatar and (linked) nickname of the author.
*
* @return void
*/
function showAuthor()
{
common_element_start('span', 'vcard author');
common_element_start('a', array('href' => $this->profile->profileurl),
'class' => 'url');
$this->showAvatar();
$this->showNickname();
common_element_end('a');
common_element_end('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 = $this->profile->getAvatar(AVATAR_STREAM_SIZE);
common_element('img', array('src' => ($avatar) ?
common_avatar_display_url($avatar) :
common_default_avatar(AVATAR_STREAM_SIZE),
'class' => 'avatar photo',
'width' => AVATAR_STREAM_SIZE,
'height' => AVATAR_STREAM_SIZE,
'alt' =>
($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()
{
common_element('span', array('class' => 'nickname fn'),
$this->profile->nickname);
}
/**
* show the content of the notice
*
* Shows the content of the notice. This is pre-rendered for efficiency
* at save time. Some very old notices might not be pre-rendered, so
* they're rendered on the spot.
*
* @return void
*/
function showContent()
{
// FIXME: URL, image, video, audio
common_element_start('p', array('class' => 'content entry-title'));
if ($this->notice->rendered) {
common_raw($this->notice->rendered);
} else {
// XXX: may be some uncooked notices in the DB,
// we cook them right now. This should probably disappear in future
// versions (>> 0.4.x)
common_raw(common_render_content($this->notice->content, $this->notice));
}
common_element_end('p');
}
/**
* show the "time" section of a notice
*
* This is the greyed-out section that appears beneath the content, including
* links to delete or reply to the notice. Probably should be called something
* else.
*
* @return void
*/
function startTimeSection()
{
common_element_start('p', 'time');
}
/**
* 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;
}
common_element_start('a', array('class' => 'permalink',
'rel' => 'bookmark',
'href' => $noticeurl));
$dt = common_date_iso8601($this->notice->created);
common_element('abbr', array('class' => 'published',
'title' => $dt),
common_date_string($this->notice->created));
common_element_end('a');
}
/**
* 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) {
common_element('span', null, _(' from '));
$source_name = _($this->notice->source);
switch ($this->notice->source) {
case 'web':
case 'xmpp':
case 'mail':
case 'omb':
case 'api':
common_element('span', 'noticesource', $source_name);
break;
default:
$ns = Notice_source::staticGet($this->notice->source);
if ($ns) {
common_element('a', array('href' => $ns->url),
$ns->name);
} else {
common_element('span', 'noticesource', $source_name);
}
break;
}
}
}
/**
* show link to notice this notice is a reply to
*
* If this notice is a reply, show a link to the notice it is replying to. The
* heavy lifting for figuring out replies happens at save time.
*
* @return void
*/
function showReplyTo()
{
if ($this->notice->reply_to) {
$replyurl = common_local_url('shownotice',
array('notice' => $this->notice->reply_to));
common_text(' (');
common_element('a', array('class' => 'inreplyto',
'href' => $replyurl),
_('in reply to...'));
common_text(')');
}
}
/**
* 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()
{
$reply_url = common_local_url('newnotice',
array('replyto' => $this->profile->nickname));
$reply_js =
'return doreply("'.$this->profile->nickname.'",'.$this->notice->id.');';
common_element_start('a',
array('href' => $reply_url,
'onclick' => $reply_js,
'title' => _('reply'),
'class' => 'replybutton'));
common_raw(' &#8594;');
common_element_end('a');
}
/**
* 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));
common_element_start('a', array('class' => 'deletenotice',
'href' => $deleteurl,
'title' => _('delete')));
common_raw(' &#215;');
common_element_end('a');
}
}
/**
* end the time section
*
* @return void
*/
function endTimeSection()
{
common_element_end('p');
}
/**
* finish the notice
*
* Close the last elements in the notice list item
*
* @return void
*/
function showEnd()
{
common_element_end('li');
}
}