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phorge/src/applications/files/markup/PhabricatorEmbedFileRemarkupRule.php
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PhabricatorEmbedFileRemarkupRule.php
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<?php
final class PhabricatorEmbedFileRemarkupRule
extends PhabricatorObjectRemarkupRule {
private $viewer;
const KEY_ATTACH_INTENT_FILE_PHIDS = 'files.attach-intent';
protected function getObjectNamePrefix() {
return 'F';
}
protected function loadObjects(array $ids) {
$engine = $this->getEngine();
$this->viewer = $engine->getConfig('viewer');
$objects = id(new PhabricatorFileQuery())
->setViewer($this->viewer)
->withIDs($ids)
->needTransforms(
array(
PhabricatorFileThumbnailTransform::TRANSFORM_PREVIEW,
))
->execute();
$objects = mpull($objects, null, 'getID');
// Identify files embedded in the block with "attachment intent", i.e.
// those files which the user appears to want to attach to the object.
// Files referenced inside quoted blocks are not considered to have this
// attachment intent.
$metadata_key = self::KEY_RULE_OBJECT.'.'.$this->getObjectNamePrefix();
$metadata = $engine->getTextMetadata($metadata_key, array());
$attach_key = self::KEY_ATTACH_INTENT_FILE_PHIDS;
$attach_phids = $engine->getTextMetadata($attach_key, array());
foreach ($metadata as $item) {
// If this reference was inside a quoted block, don't count it. Quoting
// someone else doesn't establish an intent to attach a file.
$depth = idx($item, 'quote.depth');
if ($depth > 0) {
continue;
}
$id = $item['id'];
$file = idx($objects, $id);
if (!$file) {
continue;
}
$attach_phids[] = $file->getPHID();
}
$attach_phids = array_fuse($attach_phids);
$attach_phids = array_keys($attach_phids);
$engine->setTextMetadata($attach_key, $attach_phids);
return $objects;
}
protected function renderObjectEmbed(
$object,
PhabricatorObjectHandle $handle,
$options) {
$options = $this->getFileOptions($options) + array(
'name' => $object->getName(),
);
$is_viewable_image = $object->isViewableImage();
$is_audio = $object->isAudio();
$is_video = $object->isVideo();
$force_link = ($options['layout'] == 'link');
// If a file is both audio and video, as with "application/ogg" by default,
// render it as video but allow the user to specify `media=audio` if they
// want to force it to render as audio.
if ($is_audio && $is_video) {
$media = $options['media'];
if ($media == 'audio') {
$is_video = false;
} else {
$is_audio = false;
}
}
$options['viewable'] = ($is_viewable_image || $is_audio || $is_video);
if ($is_viewable_image && !$force_link) {
return $this->renderImageFile($object, $handle, $options);
} else if ($is_video && !$force_link) {
return $this->renderVideoFile($object, $handle, $options);
} else if ($is_audio && !$force_link) {
return $this->renderAudioFile($object, $handle, $options);
} else {
return $this->renderFileLink($object, $handle, $options);
}
}
private function getFileOptions($option_string) {
$options = array(
'size' => null,
'layout' => 'left',
'float' => false,
'width' => null,
'height' => null,
'alt' => null,
'media' => null,
'autoplay' => null,
'loop' => null,
);
if ($option_string) {
$option_string = trim($option_string, ', ');
$parser = new PhutilSimpleOptions();
$options = $parser->parse($option_string) + $options;
}
return $options;
}
private function renderImageFile(
PhabricatorFile $file,
PhabricatorObjectHandle $handle,
array $options) {
require_celerity_resource('phui-lightbox-css');
$attrs = array();
$image_class = 'phabricator-remarkup-embed-image';
$use_size = true;
if (!$options['size']) {
$width = $this->parseDimension($options['width']);
$height = $this->parseDimension($options['height']);
if ($width || $height) {
$use_size = false;
$attrs += array(
'src' => $file->getBestURI(),
'width' => $width,
'height' => $height,
);
}
}
if ($use_size) {
switch ((string)$options['size']) {
case 'full':
$attrs += array(
'src' => $file->getBestURI(),
'height' => $file->getImageHeight(),
'width' => $file->getImageWidth(),
);
$image_class = 'phabricator-remarkup-embed-image-full';
break;
// Displays "full" in normal Remarkup, "wide" in Documents
case 'wide':
$attrs += array(
'src' => $file->getBestURI(),
'width' => $file->getImageWidth(),
);
$image_class = 'phabricator-remarkup-embed-image-wide';
break;
case 'thumb':
default:
$preview_key = PhabricatorFileThumbnailTransform::TRANSFORM_PREVIEW;
$xform = PhabricatorFileTransform::getTransformByKey($preview_key);
$existing_xform = $file->getTransform($preview_key);
if ($existing_xform) {
$xform_uri = $existing_xform->getCDNURI('data');
} else {
$xform_uri = $file->getURIForTransform($xform);
}
$attrs['src'] = $xform_uri;
$dimensions = $xform->getTransformedDimensions($file);
if ($dimensions) {
list($x, $y) = $dimensions;
$attrs['width'] = $x;
$attrs['height'] = $y;
}
break;
}
}
$alt = null;
if (isset($options['alt'])) {
$alt = $options['alt'];
}
if (!strlen($alt)) {
$alt = $file->getAltText();
}
$attrs['alt'] = $alt;
$img = phutil_tag('img', $attrs);
$embed = javelin_tag(
'a',
array(
'href' => $file->getBestURI(),
'class' => $image_class,
'sigil' => 'lightboxable',
'meta' => array(
'phid' => $file->getPHID(),
'uri' => $file->getBestURI(),
'dUri' => $file->getDownloadURI(),
'alt' => $alt,
'viewable' => true,
'monogram' => $file->getMonogram(),
),
),
$img);
switch ($options['layout']) {
case 'right':
case 'center':
case 'inline':
case 'left':
$layout_class = 'phabricator-remarkup-embed-layout-'.$options['layout'];
break;
default:
$layout_class = 'phabricator-remarkup-embed-layout-left';
break;
}
if ($options['float']) {
switch ($options['layout']) {
case 'center':
case 'inline':
break;
case 'right':
$layout_class .= ' phabricator-remarkup-embed-float-right';
break;
case 'left':
default:
$layout_class .= ' phabricator-remarkup-embed-float-left';
break;
}
}
return phutil_tag(
($options['layout'] == 'inline' ? 'span' : 'div'),
array(
'class' => $layout_class,
),
$embed);
}
private function renderAudioFile(
PhabricatorFile $file,
PhabricatorObjectHandle $handle,
array $options) {
return $this->renderMediaFile('audio', $file, $handle, $options);
}
private function renderVideoFile(
PhabricatorFile $file,
PhabricatorObjectHandle $handle,
array $options) {
return $this->renderMediaFile('video', $file, $handle, $options);
}
private function renderMediaFile(
$tag,
PhabricatorFile $file,
PhabricatorObjectHandle $handle,
array $options) {
$is_video = ($tag == 'video');
if (idx($options, 'autoplay')) {
$preload = 'auto';
$autoplay = 'autoplay';
} else {
// If we don't preload video, the user can't see the first frame and
// has no clue what they're looking at, so always preload.
if ($is_video) {
$preload = 'auto';
} else {
$preload = 'none';
}
$autoplay = null;
}
// Rendering contexts like feed can disable autoplay.
$engine = $this->getEngine();
if ($engine->getConfig('autoplay.disable')) {
$autoplay = null;
}
if ($is_video) {
// See T13135. Chrome refuses to play videos with type "video/quicktime",
// even though it may actually be able to play them. The least awful fix
// based on available information is to simply omit the "type" attribute
// from `<source />` tags. This causes Chrome to try to play the video
// and realize it can, and does not appear to produce any bad behavior in
// any other browser.
$mime_type = null;
} else {
$mime_type = $file->getMimeType();
}
return $this->newTag(
$tag,
array(
'controls' => 'controls',
'preload' => $preload,
'autoplay' => $autoplay,
'loop' => idx($options, 'loop') ? 'loop' : null,
'alt' => $options['alt'],
'class' => 'phabricator-media',
),
$this->newTag(
'source',
array(
'src' => $file->getBestURI(),
'type' => $mime_type,
)));
}
private function renderFileLink(
PhabricatorFile $file,
PhabricatorObjectHandle $handle,
array $options) {
return id(new PhabricatorFileLinkView())
->setViewer($this->viewer)
->setFilePHID($file->getPHID())
->setFileName($this->assertFlatText($options['name']))
->setFileDownloadURI($file->getDownloadURI())
->setFileViewURI($file->getBestURI())
->setFileViewable((bool)$options['viewable'])
->setFileSize(phutil_format_bytes($file->getByteSize()))
->setFileMonogram($file->getMonogram());
}
private function parseDimension($string) {
$string = trim($string);
if (preg_match('/^(?:\d*\\.)?\d+%?$/', $string)) {
return $string;
}
return null;
}
}

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