gnu-social/lib/attachmentlist.php

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<?php
/**
* Laconica, the distributed open-source microblogging tool
*
* widget for displaying a list of notice attachments
*
* 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);
}
/**
* widget for displaying a list of notice attachments
*
* 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 AttachmentList extends Widget
{
/** the current stream of notices being displayed. */
var $notice = null;
/**
* constructor
*
* @param Notice $notice stream of notices from DB_DataObject
*/
function __construct($notice, $out=null)
{
parent::__construct($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()
{
$atts = new File;
$att = $atts->getAttachments($this->notice->id);
if (empty($att)) return 0;
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$this->out->elementStart('dl', array('id' =>'attachment'));
$this->out->element('dt', null, _('Attachments'));
$this->out->elementStart('dd');
$this->out->elementStart('ul', array('class' => 'attachments'));
foreach ($att as $n=>$attachment) {
$item = $this->newListItem($attachment);
$item->show();
}
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$this->out->elementEnd('dd');
$this->out->elementEnd('ul');
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$this->out->elementEnd('dl');
return count($att);
}
/**
* 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 $notice the current notice
*
* @return NoticeListItem a list item for displaying the notice
*/
function newListItem($attachment)
{
return new AttachmentListItem($attachment, $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
*/
class AttachmentListItem extends Widget
{
/** The attachment this item will show. */
var $attachment = null;
var $oembed = null;
/**
* constructor
*
* Also initializes the profile attribute.
*
* @param Notice $notice The notice we'll display
*/
function __construct($attachment, $out=null)
{
parent::__construct($out);
$this->attachment = $attachment;
$this->oembed = File_oembed::staticGet('file_id', $this->attachment->id);
}
function title() {
if (empty($this->attachment->title)) {
if (empty($this->oembed->title)) {
$title = $this->attachment->url;
} else {
$title = $this->oembed->title;
}
} else {
$title = $this->attachment->title;
}
return $title;
}
function linkTitle() {
return $this->title();
}
/**
* 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->showNoticeAttachment();
$this->showEnd();
}
function linkAttr() {
return array('class' => 'attachment', 'href' => $this->attachment->url, 'id' => 'attachment-' . $this->attachment->id);
}
function showLink() {
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$this->out->elementStart('a', $this->linkAttr());
$this->out->element('span', null, $this->linkTitle());
$this->showRepresentation();
$this->out->elementEnd('a');
}
function showNoticeAttachment()
{
$this->showLink();
}
function showRepresentation() {
$thumbnail = File_thumbnail::staticGet('file_id', $this->attachment->id);
if (!empty($thumbnail)) {
$this->out->element('img', array('alt' => 'nothing to say', 'src' => $thumbnail->url, 'width' => $thumbnail->width, 'height' => $thumbnail->height));
}
}
/**
* start a single notice.
*
* @return void
*/
function showStart()
{
// XXX: RDFa
// TODO: add notice_type class e.g., notice_video, notice_image
$this->out->elementStart('li');
}
/**
* finish the notice
*
* Close the last elements in the notice list item
*
* @return void
*/
function showEnd()
{
$this->out->elementEnd('li');
}
}
class Attachment extends AttachmentListItem
{
function show() {
$this->showNoticeAttachment();
}
function linkAttr() {
return array('class' => 'external', 'href' => $this->attachment->url);
}
function linkTitle() {
return $this->attachment->url;
}
function showRepresentation() {
if (empty($this->oembed->type)) {
if (empty($this->attachment->mimetype)) {
$this->out->element('pre', null, 'oh well... not sure how to handle the following: ' . print_r($this->attachment, true));
} else {
switch ($this->attachment->mimetype) {
case 'image/gif':
case 'image/png':
case 'image/jpg':
case 'image/jpeg':
$this->out->element('img', array('src' => $this->attachment->url, 'alt' => 'alt'));
break;
}
}
} else {
switch ($this->oembed->type) {
case 'rich':
case 'video':
case 'link':
if (!empty($this->oembed->html)) {
$this->out->raw($this->oembed->html);
}
break;
case 'photo':
$this->out->element('img', array('src' => $this->oembed->url, 'width' => $this->oembed->width, 'height' => $this->oembed->height, 'alt' => 'alt'));
break;
default:
$this->out->element('pre', null, 'oh well... not sure how to handle the following oembed: ' . print_r($this->oembed, true));
}
}
}
}