831b6d2bf7
* Fixed the formal parameter bloat in the file finding functions by making wfFindFile(), RepoGroup::findFile() and FileRepo::findFile() take an associative array of options instead of a rapidly growing collection of formal parameters. Maintained backwards compatibility for the $time parameter, which was the only one used in an extension. * Took the advice of the todo comment on FileRepo::findFiles() and implemented a calling convention for specifying times (and other options) * Removed the file object cache from Parser, redundant with the RepoGroup file cache * Deleted clueless and non-functional LocalRepo::findFiles(). Does not respect redirects, deletion bitfields, or anything else nuanced about FileRepo::findFile(). Does not have the same calling convention as FileRepo::findFiles().
372 lines
9.2 KiB
PHP
372 lines
9.2 KiB
PHP
<?php
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if ( ! defined( 'MEDIAWIKI' ) )
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die( 1 );
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/**
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* Image gallery
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*
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* Add images to the gallery using add(), then render that list to HTML using toHTML().
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*
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* @ingroup Media
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*/
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class ImageGallery
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{
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var $mImages, $mShowBytes, $mShowFilename;
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var $mCaption = false;
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var $mSkin = false;
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var $mRevisionId = 0;
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/**
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* Hide blacklisted images?
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*/
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var $mHideBadImages;
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/**
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* Registered parser object for output callbacks
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*/
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var $mParser;
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/**
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* Contextual title, used when images are being screened
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* against the bad image list
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*/
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private $contextTitle = false;
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private $mPerRow = 4; // How many images wide should the gallery be?
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private $mWidths = 120, $mHeights = 120; // How wide/tall each thumbnail should be
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private $mAttribs = array();
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/**
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* Create a new image gallery object.
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*/
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function __construct( ) {
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$this->mImages = array();
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$this->mShowBytes = true;
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$this->mShowFilename = true;
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$this->mParser = false;
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$this->mHideBadImages = false;
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}
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/**
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* Register a parser object
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*/
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function setParser( $parser ) {
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$this->mParser = $parser;
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}
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/**
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* Set bad image flag
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*/
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function setHideBadImages( $flag = true ) {
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$this->mHideBadImages = $flag;
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}
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/**
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* Set the caption (as plain text)
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*
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* @param $caption Caption
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*/
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function setCaption( $caption ) {
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$this->mCaption = htmlspecialchars( $caption );
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}
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/**
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* Set the caption (as HTML)
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*
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* @param $caption Caption
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*/
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public function setCaptionHtml( $caption ) {
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$this->mCaption = $caption;
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}
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/**
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* Set how many images will be displayed per row.
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*
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* @param int $num > 0; invalid numbers will be rejected
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*/
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public function setPerRow( $num ) {
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if ($num > 0) {
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$this->mPerRow = (int)$num;
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}
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}
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/**
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* Set how wide each image will be, in pixels.
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*
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* @param int $num > 0; invalid numbers will be ignored
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*/
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public function setWidths( $num ) {
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if ($num > 0) {
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$this->mWidths = (int)$num;
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}
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}
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/**
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* Set how high each image will be, in pixels.
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*
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* @param int $num > 0; invalid numbers will be ignored
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*/
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public function setHeights( $num ) {
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if ($num > 0) {
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$this->mHeights = (int)$num;
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}
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}
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/**
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* Instruct the class to use a specific skin for rendering
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*
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* @param $skin Skin object
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*/
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function useSkin( $skin ) {
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$this->mSkin = $skin;
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}
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/**
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* Return the skin that should be used
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*
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* @return Skin object
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*/
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function getSkin() {
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if( !$this->mSkin ) {
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global $wgUser;
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$skin = $wgUser->getSkin();
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} else {
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$skin = $this->mSkin;
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}
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return $skin;
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}
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/**
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* Add an image to the gallery.
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*
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* @param $title Title object of the image that is added to the gallery
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* @param $html String: additional HTML text to be shown. The name and size of the image are always shown.
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*/
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function add( $title, $html='' ) {
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if ( $title instanceof File ) {
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// Old calling convention
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$title = $title->getTitle();
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}
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$this->mImages[] = array( $title, $html );
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wfDebug( "ImageGallery::add " . $title->getText() . "\n" );
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}
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/**
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* Add an image at the beginning of the gallery.
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*
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* @param $title Title object of the image that is added to the gallery
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* @param $html String: Additional HTML text to be shown. The name and size of the image are always shown.
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*/
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function insert( $title, $html='' ) {
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if ( $title instanceof File ) {
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// Old calling convention
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$title = $title->getTitle();
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}
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array_unshift( $this->mImages, array( &$title, $html ) );
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}
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/**
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* isEmpty() returns true if the gallery contains no images
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*/
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function isEmpty() {
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return empty( $this->mImages );
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}
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/**
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* Enable/Disable showing of the file size of an image in the gallery.
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* Enabled by default.
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*
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* @param $f Boolean: set to false to disable.
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*/
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function setShowBytes( $f ) {
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$this->mShowBytes = ( $f == true);
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}
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/**
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* Enable/Disable showing of the filename of an image in the gallery.
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* Enabled by default.
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*
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* @param $f Boolean: set to false to disable.
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*/
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function setShowFilename( $f ) {
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$this->mShowFilename = ( $f == true);
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}
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/**
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* Set arbitrary attributes to go on the HTML gallery output element.
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* Should be suitable for a <table> element.
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*
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* Note -- if taking from user input, you should probably run through
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* Sanitizer::validateAttributes() first.
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*
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* @param array of HTML attribute pairs
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*/
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function setAttributes( $attribs ) {
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$this->mAttribs = $attribs;
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}
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/**
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* Return a HTML representation of the image gallery
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*
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* For each image in the gallery, display
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* - a thumbnail
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* - the image name
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* - the additional text provided when adding the image
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* - the size of the image
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*
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*/
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function toHTML() {
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global $wgLang;
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$sk = $this->getSkin();
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$attribs = Sanitizer::mergeAttributes(
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array(
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'class' => 'gallery',
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'cellspacing' => '0',
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'cellpadding' => '0' ),
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$this->mAttribs );
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$s = Xml::openElement( 'table', $attribs );
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if( $this->mCaption )
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$s .= "\n\t<caption>{$this->mCaption}</caption>";
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$params = array( 'width' => $this->mWidths, 'height' => $this->mHeights );
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$i = 0;
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foreach ( $this->mImages as $pair ) {
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$nt = $pair[0];
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$text = $pair[1]; # "text" means "caption" here
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# Give extensions a chance to select the file revision for us
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$time = $descQuery = false;
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wfRunHooks( 'BeforeGalleryFindFile', array( &$this, &$nt, &$time, &$descQuery ) );
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$img = wfFindFile( $nt, array( 'time' => $time ) );
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if( $nt->getNamespace() != NS_FILE || !$img ) {
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# We're dealing with a non-image, spit out the name and be done with it.
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$thumbhtml = "\n\t\t\t".'<div style="height: '.($this->mHeights*1.25+2).'px;">'
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. htmlspecialchars( $nt->getText() ) . '</div>';
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} elseif( $this->mHideBadImages && wfIsBadImage( $nt->getDBkey(), $this->getContextTitle() ) ) {
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# The image is blacklisted, just show it as a text link.
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$thumbhtml = "\n\t\t\t".'<div style="height: '.($this->mHeights*1.25+2).'px;">' .
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$sk->link(
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$nt,
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htmlspecialchars( $nt->getText() ),
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array(),
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array(),
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array( 'known', 'noclasses' )
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) .
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'</div>';
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} elseif( !( $thumb = $img->transform( $params ) ) ) {
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# Error generating thumbnail.
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$thumbhtml = "\n\t\t\t".'<div style="height: '.($this->mHeights*1.25+2).'px;">'
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. htmlspecialchars( $img->getLastError() ) . '</div>';
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} else {
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$vpad = floor( ( 1.25*$this->mHeights - $thumb->height ) /2 ) - 2;
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$imageParameters = array(
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'desc-link' => true,
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'desc-query' => $descQuery
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);
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# In the absence of a caption, fall back on providing screen readers with the filename as alt text
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if ( $text == '' ) {
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$imageParameters['alt'] = $nt->getText();
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}
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$thumbhtml = "\n\t\t\t".
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'<div class="thumb" style="padding: ' . $vpad . 'px 0; width: ' .($this->mWidths+30).'px;">'
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# Auto-margin centering for block-level elements. Needed now that we have video
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# handlers since they may emit block-level elements as opposed to simple <img> tags.
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# ref http://css-discuss.incutio.com/?page=CenteringBlockElement
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. '<div style="margin-left: auto; margin-right: auto; width: ' .$this->mWidths.'px;">'
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. $thumb->toHtml( $imageParameters ) . '</div></div>';
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// Call parser transform hook
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if ( $this->mParser && $img->getHandler() ) {
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$img->getHandler()->parserTransformHook( $this->mParser, $img );
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}
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}
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//TODO
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// $linkTarget = Title::newFromText( $wgContLang->getNsText( MWNamespace::getUser() ) . ":{$ut}" );
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// $ul = $sk->link( $linkTarget, $ut );
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if( $this->mShowBytes ) {
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if( $img ) {
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$nb = wfMsgExt( 'nbytes', array( 'parsemag', 'escape'),
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$wgLang->formatNum( $img->getSize() ) );
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} else {
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$nb = wfMsgHtml( 'filemissing' );
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}
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$nb = "$nb<br />\n";
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} else {
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$nb = '';
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}
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$textlink = $this->mShowFilename ?
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$sk->link(
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$nt,
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htmlspecialchars( $wgLang->truncate( $nt->getText(), 20 ) ),
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array(),
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array(),
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array( 'known', 'noclasses' )
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) . "<br />\n" :
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'' ;
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# ATTENTION: The newline after <div class="gallerytext"> is needed to accommodate htmltidy which
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# in version 4.8.6 generated crackpot html in its absence, see:
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# http://bugzilla.wikimedia.org/show_bug.cgi?id=1765 -Ævar
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if ( $i % $this->mPerRow == 0 ) {
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$s .= "\n\t<tr>";
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}
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$s .=
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"\n\t\t" . '<td><div class="gallerybox" style="width: '.($this->mWidths+35).'px;">'
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. $thumbhtml
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. "\n\t\t\t" . '<div class="gallerytext">' . "\n"
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. $textlink . $text . $nb
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. "\n\t\t\t</div>"
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. "\n\t\t</div></td>";
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if ( $i % $this->mPerRow == $this->mPerRow - 1 ) {
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$s .= "\n\t</tr>";
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}
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++$i;
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}
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if( $i % $this->mPerRow != 0 ) {
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$s .= "\n\t</tr>";
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}
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$s .= "\n</table>";
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return $s;
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}
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/**
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* @return int Number of images in the gallery
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*/
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public function count() {
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return count( $this->mImages );
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}
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/**
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* Set the contextual title
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*
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* @param Title $title Contextual title
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*/
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public function setContextTitle( $title ) {
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$this->contextTitle = $title;
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}
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/**
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* Get the contextual title, if applicable
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*
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* @return mixed Title or false
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*/
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public function getContextTitle() {
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return is_object( $this->contextTitle ) && $this->contextTitle instanceof Title
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? $this->contextTitle
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: false;
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}
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} //class
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