mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-24 22:35:41 +00:00
439 lines
13 KiB
JavaScript
439 lines
13 KiB
JavaScript
/*!
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* VisualEditor DataModel MWImageNode class.
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*
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* @copyright 2011-2020 VisualEditor Team and others; see AUTHORS.txt
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* @license The MIT License (MIT); see LICENSE.txt
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*/
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/**
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* DataModel MediaWiki image node.
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*
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* @class
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* @abstract
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* @extends ve.dm.GeneratedContentNode
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* @mixins ve.dm.FocusableNode
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* @mixins ve.dm.ResizableNode
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*
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* @constructor
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*/
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ve.dm.MWImageNode = function VeDmMWImageNode() {
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// Parent constructor
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ve.dm.GeneratedContentNode.call( this );
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// Mixin constructors
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ve.dm.FocusableNode.call( this );
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// ve.dm.MWResizableNode doesn't exist
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ve.dm.ResizableNode.call( this );
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this.scalablePromise = null;
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// Use 'bitmap' as default media type until we can
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// fetch the actual media type from the API
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this.mediaType = 'BITMAP';
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// Initialize
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this.constructor.static.syncScalableToType(
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this.getAttribute( 'type' ),
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this.mediaType,
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this.getScalable()
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);
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// Events
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this.connect( this, { attributeChange: 'onAttributeChange' } );
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};
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/* Inheritance */
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OO.inheritClass( ve.dm.MWImageNode, ve.dm.GeneratedContentNode );
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OO.mixinClass( ve.dm.MWImageNode, ve.dm.FocusableNode );
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OO.mixinClass( ve.dm.MWImageNode, ve.dm.ResizableNode );
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/* Static methods */
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ve.dm.MWImageNode.static.rdfaToTypes = ( function () {
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var rdfaToType = {};
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[ 'Image', 'Video', 'Audio' ].forEach( function ( mediaClass ) {
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rdfaToType[ 'mw:' + mediaClass ] = { mediaClass: mediaClass, frameType: 'none' };
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rdfaToType[ 'mw:' + mediaClass + '/Frameless' ] = { mediaClass: mediaClass, frameType: 'frameless' };
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// Block image only:
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rdfaToType[ 'mw:' + mediaClass + '/Thumb' ] = { mediaClass: mediaClass, frameType: 'thumb' };
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rdfaToType[ 'mw:' + mediaClass + '/Frame' ] = { mediaClass: mediaClass, frameType: 'frame' };
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} );
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return rdfaToType;
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}() );
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/**
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* Get RDFa type
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*
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* @static
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* @param {string} mediaClass Media class, one of 'Image', 'Video' or 'Audio'
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* @param {string} frameType Frame type, one of 'none', 'frameless', 'thumb' or 'frame'
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* @param {boolean} isError Whether the included media file is missing
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* @return {string} RDFa type
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*/
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ve.dm.MWImageNode.static.getRdfa = function ( mediaClass, frameType, isError ) {
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return ( isError ? 'mw:Error ' : '' ) + 'mw:' + mediaClass + {
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none: '',
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frameless: '/Frameless',
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// Block image only:
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thumb: '/Thumb',
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frame: '/Frame'
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}[ frameType ];
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};
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/**
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* Map media types to tag names
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*
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* @type {Object}
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*/
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ve.dm.MWImageNode.static.typesToTags = {
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Image: 'img',
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Audio: 'audio',
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Video: 'video'
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};
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/**
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* Map media types to source attributes
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*
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* @type {Object}
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*/
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ve.dm.MWImageNode.static.typesToSrcAttrs = {
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Image: 'src',
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Audio: null,
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Video: 'poster'
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};
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/**
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* @inheritdoc ve.dm.GeneratedContentNode
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*/
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ve.dm.MWImageNode.static.getHashObjectForRendering = function ( dataElement ) {
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// "Rendering" is just the URL of the thumbnail, so we only
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// care about src & dimensions
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return {
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type: 'mwImage',
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resource: dataElement.attributes.resource,
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width: dataElement.attributes.width,
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height: dataElement.attributes.height
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};
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};
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ve.dm.MWImageNode.static.getMatchRdfaTypes = function () {
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return Object.keys( this.rdfaToTypes );
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};
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ve.dm.MWImageNode.static.allowedRdfaTypes = [ 'mw:Error' ];
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ve.dm.MWImageNode.static.isDiffComparable = function ( element, other ) {
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// Images with different src's shouldn't be diffed
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return element.type === other.type && element.attributes.resource === other.attributes.resource;
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};
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ve.dm.MWImageNode.static.describeChanges = function ( attributeChanges, attributes ) {
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var customKeys = [ 'width', 'height', 'defaultSize', 'src', 'href' ],
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descriptions = [];
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function describeSize( width, height ) {
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return width + ve.msg( 'visualeditor-dimensionswidget-times' ) + height + ve.msg( 'visualeditor-dimensionswidget-px' );
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}
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if ( 'width' in attributeChanges || 'height' in attributeChanges ) {
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var sizeFrom, sizeTo;
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if ( attributeChanges.defaultSize && attributeChanges.defaultSize.from === true ) {
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sizeFrom = ve.msg( 'visualeditor-mediasizewidget-sizeoptions-default' );
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} else {
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sizeFrom = describeSize(
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'width' in attributeChanges ? attributeChanges.width.from : attributes.width,
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'height' in attributeChanges ? attributeChanges.height.from : attributes.height
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);
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}
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if ( attributeChanges.defaultSize && attributeChanges.defaultSize.to === true ) {
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sizeTo = ve.msg( 'visualeditor-mediasizewidget-sizeoptions-default' );
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} else {
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sizeTo = describeSize(
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'width' in attributeChanges ? attributeChanges.width.to : attributes.width,
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'height' in attributeChanges ? attributeChanges.height.to : attributes.height
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);
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}
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descriptions.push(
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ve.htmlMsg( 'visualeditor-changedesc-image-size', this.wrapText( 'del', sizeFrom ), this.wrapText( 'ins', sizeTo ) )
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);
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}
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for ( var key in attributeChanges ) {
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if ( customKeys.indexOf( key ) === -1 ) {
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if ( key === 'borderImage' && !attributeChanges.borderImage.from && !attributeChanges.borderImage.to ) {
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// Skip noise from the data model
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continue;
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}
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var change = this.describeChange( key, attributeChanges[ key ] );
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descriptions.push( change );
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}
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}
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return descriptions;
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};
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ve.dm.MWImageNode.static.describeChange = function ( key, change ) {
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switch ( key ) {
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case 'align':
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return ve.htmlMsg( 'visualeditor-changedesc-align',
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// The following messages are used here:
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// * visualeditor-align-desc-left
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// * visualeditor-align-desc-right
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// * visualeditor-align-desc-center
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// * visualeditor-align-desc-default
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// * visualeditor-align-desc-none
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this.wrapText( 'del', ve.msg( 'visualeditor-align-desc-' + change.from ) ),
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this.wrapText( 'ins', ve.msg( 'visualeditor-align-desc-' + change.to ) )
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);
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case 'originalWidth':
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case 'originalHeight':
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case 'originalClasses':
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case 'unrecognizedClasses':
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return;
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// TODO: Handle valign
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}
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// Parent method
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return ve.dm.Node.static.describeChange.apply( this, arguments );
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};
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/**
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* Take the given dimensions and scale them to thumbnail size.
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*
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* @param {Object} dimensions Width and height of the image
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* @param {string} [mediaType] Media type 'DRAWING' or 'BITMAP'
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* @return {Object} The new width and height of the scaled image
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*/
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ve.dm.MWImageNode.static.scaleToThumbnailSize = function ( dimensions, mediaType ) {
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var defaultThumbSize = mw.config.get( 'wgVisualEditorConfig' )
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.thumbLimits[ mw.user.options.get( 'thumbsize' ) ];
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mediaType = mediaType || 'BITMAP';
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if ( dimensions.width && dimensions.height ) {
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// Use dimensions
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// Resize to default thumbnail size, but only if the image itself
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// isn't smaller than the default size
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// For svg/drawings, the default wiki size is always applied
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if ( dimensions.width > defaultThumbSize || mediaType === 'DRAWING' ) {
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return ve.dm.Scalable.static.getDimensionsFromValue( {
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width: defaultThumbSize
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}, dimensions.width / dimensions.height );
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}
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}
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return dimensions;
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};
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/**
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* Translate the image dimensions into new ones according to the bounding box.
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*
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* @param {Object} imageDimensions Width and height of the image
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* @param {Object} boundingBox The limit of the bounding box
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* @return {Object} The new width and height of the scaled image.
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*/
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ve.dm.MWImageNode.static.resizeToBoundingBox = function ( imageDimensions, boundingBox ) {
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var newDimensions = ve.copy( imageDimensions ),
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scale = Math.min(
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boundingBox.height / imageDimensions.height,
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boundingBox.width / imageDimensions.width
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);
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if ( scale < 1 ) {
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// Scale down
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newDimensions = {
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width: Math.floor( newDimensions.width * scale ),
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height: Math.floor( newDimensions.height * scale )
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};
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}
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return newDimensions;
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};
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/**
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* Update image scalable properties according to the image type.
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*
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* @param {string} type The new image type
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* @param {string} mediaType Image media type 'DRAWING' or 'BITMAP'
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* @param {ve.dm.Scalable} scalable The scalable object to update
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*/
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ve.dm.MWImageNode.static.syncScalableToType = function ( type, mediaType, scalable ) {
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var defaultThumbSize = mw.config.get( 'wgVisualEditorConfig' )
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.thumbLimits[ mw.user.options.get( 'thumbsize' ) ];
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var originalDimensions = scalable.getOriginalDimensions();
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// We can only set default dimensions if we have the original ones
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if ( originalDimensions ) {
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if ( type === 'thumb' || type === 'frameless' ) {
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// Set the default size to that in the wiki configuration if
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// 1. The original image width is not smaller than the default
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// 2. If the image is an SVG drawing
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var dimensions;
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if ( originalDimensions.width >= defaultThumbSize || mediaType === 'DRAWING' ) {
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dimensions = ve.dm.Scalable.static.getDimensionsFromValue( {
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width: defaultThumbSize
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}, scalable.getRatio() );
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} else {
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dimensions = ve.dm.Scalable.static.getDimensionsFromValue(
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originalDimensions,
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scalable.getRatio()
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);
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}
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scalable.setDefaultDimensions( dimensions );
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} else {
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scalable.setDefaultDimensions( originalDimensions );
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}
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}
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// Deal with maximum dimensions for images and drawings
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if ( mediaType === 'DRAWING' ) {
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// Vector images are scalable past their original dimensions
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// EnforcedMax may have previously been set to true
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scalable.setEnforcedMax( false );
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} else if ( mediaType === 'AUDIO' ) {
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// Audio files are scalable to any width but have fixed height
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scalable.fixedRatio = false;
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scalable.setMinDimensions( { width: 1, height: 32 } );
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// TODO: No way to enforce max height but not max width
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scalable.setMaxDimensions( { width: 99999, height: 32 } );
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scalable.setEnforcedMax( true );
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scalable.setEnforcedMin( true );
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// Default dimensions for audio files are 0x0, which is no good
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scalable.setDefaultDimensions( { width: defaultThumbSize, height: 32 } );
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} else {
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// Raster image files are limited to their original dimensions
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if ( originalDimensions ) {
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scalable.setMaxDimensions( originalDimensions );
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scalable.setEnforcedMax( true );
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} else {
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scalable.setEnforcedMax( false );
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}
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}
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// TODO: Some day, when $wgSvgMaxSize works properly in MediaWiki
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// we can add it back as max dimension consideration.
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};
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/**
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* Get the scalable promise which fetches original dimensions from the API
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*
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* @param {string} filename The image filename whose details the scalable will represent
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* @return {jQuery.Promise} Promise which resolves after the image size details are fetched from the API
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*/
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ve.dm.MWImageNode.static.getScalablePromise = function ( filename ) {
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// On the first call set off an async call to update the scalable's
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// original dimensions from the API.
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if ( ve.init.platform.imageInfoCache ) {
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return ve.init.platform.imageInfoCache.get( filename ).then( function ( info ) {
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if ( !info || info.missing ) {
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return ve.createDeferred().reject().promise();
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}
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return info;
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} );
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} else {
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return ve.createDeferred().reject().promise();
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}
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};
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/* Methods */
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/**
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* Respond to attribute change.
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* Update the rendering of the 'align', src', 'width' and 'height' attributes
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* when they change in the model.
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*
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* @param {string} key Attribute key
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* @param {string} from Old value
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* @param {string} to New value
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*/
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ve.dm.MWImageNode.prototype.onAttributeChange = function ( key, from, to ) {
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if ( key === 'type' ) {
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this.constructor.static.syncScalableToType( to, this.mediaType, this.getScalable() );
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}
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};
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/**
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* Get the normalised filename of the image
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*
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* @return {string} Filename (including namespace)
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*/
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ve.dm.MWImageNode.prototype.getFilename = function () {
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return mw.libs.ve.normalizeParsoidResourceName( this.getAttribute( 'resource' ) || '' );
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};
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/**
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* @inheritdoc
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*/
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ve.dm.MWImageNode.prototype.getScalable = function () {
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var imageNode = this;
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if ( !this.scalablePromise ) {
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this.scalablePromise = ve.dm.MWImageNode.static.getScalablePromise( this.getFilename() );
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// If the promise was already resolved before getScalablePromise returned, then jQuery will execute the done straight away.
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// So don't just do getScalablePromise( ... ).done because we need to make sure that this.scalablePromise gets set first.
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this.scalablePromise.done( function ( info ) {
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if ( info ) {
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imageNode.getScalable().setOriginalDimensions( {
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width: info.width,
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height: info.height
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} );
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var oldMediaType = imageNode.mediaType;
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// Update media type
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imageNode.mediaType = info.mediatype;
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// Update according to type
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imageNode.constructor.static.syncScalableToType(
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imageNode.getAttribute( 'type' ),
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imageNode.mediaType,
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imageNode.getScalable()
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);
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imageNode.emit( 'attributeChange', 'mediaType', oldMediaType, imageNode.mediaType );
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}
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} );
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}
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// Mixin method
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return ve.dm.ResizableNode.prototype.getScalable.call( this );
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};
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/**
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* @inheritdoc
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*/
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ve.dm.MWImageNode.prototype.createScalable = function () {
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return new ve.dm.Scalable( {
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currentDimensions: {
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width: this.getAttribute( 'width' ),
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height: this.getAttribute( 'height' )
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},
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minDimensions: {
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width: 1,
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height: 1
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}
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} );
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};
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/**
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* Get symbolic name of media type.
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*
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* Example values: "BITMAP" for JPEG or PNG images; "DRAWING" for SVG graphics
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*
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* @return {string|undefined} Symbolic media type name, or undefined if empty
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*/
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ve.dm.MWImageNode.prototype.getMediaType = function () {
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return this.mediaType;
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};
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/**
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* Get RDFa type
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*
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* @return {string} RDFa type
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*/
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ve.dm.MWImageNode.prototype.getRdfa = function () {
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return this.constructor.static.getRdfa(
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this.getAttribute( 'mediaClass' ),
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this.getAttribute( 'type' ),
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this.getAttribute( 'isError' )
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);
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};
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