2 if ( ! defined( 'MEDIAWIKI' ) )
8 * Add images to the gallery using add(), then render that list to HTML using toHTML().
13 var $mImages, $mShowBytes, $mShowFilename;
14 var $mCaption = false;
17 * Hide blacklisted images?
22 * Registered parser object for output callbacks
28 * Contextual title, used when images are being screened
29 * against the bad image list
31 protected $contextTitle = false;
33 protected $mAttribs = array();
38 const THUMB_PADDING
= 30;
40 // 2px borders on each side + 2px implied padding on each side
44 * Create a new image gallery object.
46 function __construct() {
47 global $wgGalleryOptions;
48 $this->mImages
= array();
49 $this->mShowBytes
= $wgGalleryOptions['showBytes'];
50 $this->mShowFilename
= true;
51 $this->mParser
= false;
52 $this->mHideBadImages
= false;
53 $this->mPerRow
= $wgGalleryOptions['imagesPerRow'];
54 $this->mWidths
= $wgGalleryOptions['imageWidth'];
55 $this->mHeights
= $wgGalleryOptions['imageHeight'];
56 $this->mCaptionLength
= $wgGalleryOptions['captionLength'];
60 * Register a parser object
62 * @param $parser Parser
64 function setParser( $parser ) {
65 $this->mParser
= $parser;
71 function setHideBadImages( $flag = true ) {
72 $this->mHideBadImages
= $flag;
76 * Set the caption (as plain text)
78 * @param $caption string Caption
80 function setCaption( $caption ) {
81 $this->mCaption
= htmlspecialchars( $caption );
85 * Set the caption (as HTML)
87 * @param $caption String: Caption
89 public function setCaptionHtml( $caption ) {
90 $this->mCaption
= $caption;
94 * Set how many images will be displayed per row.
96 * @param $num Integer >= 0; If perrow=0 the gallery layout will adapt to screensize
97 * invalid numbers will be rejected
99 public function setPerRow( $num ) {
101 $this->mPerRow
= (int)$num;
106 * Set how wide each image will be, in pixels.
108 * @param $num Integer > 0; invalid numbers will be ignored
110 public function setWidths( $num ) {
112 $this->mWidths
= (int)$num;
117 * Set how high each image will be, in pixels.
119 * @param $num Integer > 0; invalid numbers will be ignored
121 public function setHeights( $num ) {
123 $this->mHeights
= (int)$num;
128 * Instruct the class to use a specific skin for rendering
130 * @param $skin Skin object
131 * @deprecated since 1.18 Not used anymore
133 function useSkin( $skin ) {
134 wfDeprecated( __METHOD__
, '1.18' );
139 * Add an image to the gallery.
141 * @param $title Title object of the image that is added to the gallery
142 * @param $html String: Additional HTML text to be shown. The name and size of the image are always shown.
143 * @param $alt String: Alt text for the image
145 function add( $title, $html = '', $alt = '' ) {
146 if ( $title instanceof File
) {
147 // Old calling convention
148 $title = $title->getTitle();
150 $this->mImages
[] = array( $title, $html, $alt );
151 wfDebug( 'ImageGallery::add ' . $title->getText() . "\n" );
155 * Add an image at the beginning of the gallery.
157 * @param $title Title object of the image that is added to the gallery
158 * @param $html String: Additional HTML text to be shown. The name and size of the image are always shown.
159 * @param $alt String: Alt text for the image
161 function insert( $title, $html = '', $alt = '' ) {
162 if ( $title instanceof File
) {
163 // Old calling convention
164 $title = $title->getTitle();
166 array_unshift( $this->mImages
, array( &$title, $html, $alt ) );
170 * isEmpty() returns true if the gallery contains no images
174 return empty( $this->mImages
);
178 * Enable/Disable showing of the file size of an image in the gallery.
179 * Enabled by default.
181 * @param $f Boolean: set to false to disable.
183 function setShowBytes( $f ) {
184 $this->mShowBytes
= (bool)$f;
188 * Enable/Disable showing of the filename of an image in the gallery.
189 * Enabled by default.
191 * @param $f Boolean: set to false to disable.
193 function setShowFilename( $f ) {
194 $this->mShowFilename
= (bool)$f;
198 * Set arbitrary attributes to go on the HTML gallery output element.
199 * Should be suitable for a <ul> element.
201 * Note -- if taking from user input, you should probably run through
202 * Sanitizer::validateAttributes() first.
204 * @param $attribs Array of HTML attribute pairs
206 function setAttributes( $attribs ) {
207 $this->mAttribs
= $attribs;
211 * Return a HTML representation of the image gallery
213 * For each image in the gallery, display
216 * - the additional text provided when adding the image
217 * - the size of the image
224 if ( $this->mPerRow
> 0 ) {
225 $maxwidth = $this->mPerRow
* ( $this->mWidths + self
::THUMB_PADDING + self
::GB_PADDING + self
::GB_BORDERS
);
226 $oldStyle = isset( $this->mAttribs
['style'] ) ?
$this->mAttribs
['style'] : '';
227 # _width is ignored by any sane browser. IE6 doesn't know max-width so it uses _width instead
228 $this->mAttribs
['style'] = "max-width: {$maxwidth}px;_width: {$maxwidth}px;" . $oldStyle;
231 $attribs = Sanitizer
::mergeAttributes(
232 array( 'class' => 'gallery' ), $this->mAttribs
);
234 $output = Xml
::openElement( 'ul', $attribs );
235 if ( $this->mCaption
) {
236 $output .= "\n\t<li class='gallerycaption'>{$this->mCaption}</li>";
240 'width' => $this->mWidths
,
241 'height' => $this->mHeights
243 # Output each image...
244 foreach ( $this->mImages
as $pair ) {
246 $text = $pair[1]; # "text" means "caption" here
250 if ( $nt->getNamespace() == NS_FILE
) {
252 if ( $this->mParser
instanceof Parser
) {
253 # Give extensions a chance to select the file revision for us
255 wfRunHooks( 'BeforeParserFetchFileAndTitle',
256 array( $this->mParser
, $nt, &$options, &$descQuery ) );
257 # Fetch and register the file (file title may be different via hooks)
258 list( $img, $nt ) = $this->mParser
->fetchFileAndTitle( $nt, $options );
260 $img = wfFindFile( $nt );
267 # We're dealing with a non-image, spit out the name and be done with it.
268 $thumbhtml = "\n\t\t\t" . '<div style="height: ' . ( self
::THUMB_PADDING +
$this->mHeights
) . 'px;">'
269 . htmlspecialchars( $nt->getText() ) . '</div>';
270 } elseif( $this->mHideBadImages
&& wfIsBadImage( $nt->getDBkey(), $this->getContextTitle() ) ) {
271 # The image is blacklisted, just show it as a text link.
272 $thumbhtml = "\n\t\t\t" . '<div style="height: ' . ( self
::THUMB_PADDING +
$this->mHeights
) . 'px;">' .
275 htmlspecialchars( $nt->getText() ),
278 array( 'known', 'noclasses' )
281 } elseif( !( $thumb = $img->transform( $params ) ) ) {
282 # Error generating thumbnail.
283 $thumbhtml = "\n\t\t\t" . '<div style="height: ' . ( self
::THUMB_PADDING +
$this->mHeights
) . 'px;">'
284 . htmlspecialchars( $img->getLastError() ) . '</div>';
286 $vpad = ( self
::THUMB_PADDING +
$this->mHeights
- $thumb->height
) /2;
288 $imageParameters = array(
290 'desc-query' => $descQuery,
293 # In the absence of both alt text and caption, fall back on providing screen readers with the filename as alt text
294 if ( $alt == '' && $text == '' ) {
295 $imageParameters['alt'] = $nt->getText();
298 # Set both fixed width and min-height.
299 $thumbhtml = "\n\t\t\t" .
300 '<div class="thumb" style="width: ' . ( $this->mWidths + self
::THUMB_PADDING
) . 'px;">'
301 # Auto-margin centering for block-level elements. Needed now that we have video
302 # handlers since they may emit block-level elements as opposed to simple <img> tags.
303 # ref http://css-discuss.incutio.com/?page=CenteringBlockElement
304 . '<div style="margin:' . $vpad . 'px auto;">'
305 . $thumb->toHtml( $imageParameters ) . '</div></div>';
307 // Call parser transform hook
308 if ( $this->mParser
&& $img->getHandler() ) {
309 $img->getHandler()->parserTransformHook( $this->mParser
, $img );
314 // $linkTarget = Title::newFromText( $wgContLang->getNsText( MWNamespace::getUser() ) . ":{$ut}" );
315 // $ul = Linker::link( $linkTarget, $ut );
317 if( $this->mShowBytes
) {
319 $fileSize = htmlspecialchars( $wgLang->formatSize( $img->getSize() ) );
321 $fileSize = wfMsgHtml( 'filemissing' );
323 $fileSize = "$fileSize<br />\n";
328 $textlink = $this->mShowFilename ?
331 htmlspecialchars( $wgLang->truncate( $nt->getText(), $this->mCaptionLength
) ),
334 array( 'known', 'noclasses' )
338 # ATTENTION: The newline after <div class="gallerytext"> is needed to accommodate htmltidy which
339 # in version 4.8.6 generated crackpot html in its absence, see:
340 # http://bugzilla.wikimedia.org/show_bug.cgi?id=1765 -Ævar
342 # Weird double wrapping (the extra div inside the li) needed due to FF2 bug
343 # Can be safely removed if FF2 falls completely out of existance
345 "\n\t\t" . '<li class="gallerybox" style="width: ' . ( $this->mWidths + self
::THUMB_PADDING + self
::GB_PADDING
) . 'px">'
346 . '<div style="width: ' . ( $this->mWidths + self
::THUMB_PADDING + self
::GB_PADDING
) . 'px">'
348 . "\n\t\t\t" . '<div class="gallerytext">' . "\n"
349 . $textlink . $text . $fileSize
351 . "\n\t\t</div></li>";
353 $output .= "\n</ul>";
359 * @return Integer: number of images in the gallery
361 public function count() {
362 return count( $this->mImages
);
366 * Set the contextual title
368 * @param $title Title: contextual title
370 public function setContextTitle( $title ) {
371 $this->contextTitle
= $title;
375 * Get the contextual title, if applicable
377 * @return mixed Title or false
379 public function getContextTitle() {
380 return is_object( $this->contextTitle
) && $this->contextTitle
instanceof Title
381 ?
$this->contextTitle