wikimedia/mediawiki-extensions-VisualEditor

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modules/ve-mw/ce/nodes/ve.ce.MWBlockImageNode.js

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/*!
 * VisualEditor ContentEditable MWBlockImageNode class.
 *
 * @copyright See AUTHORS.txt
 * @license The MIT License (MIT); see LICENSE.txt
 */

/**
 * ContentEditable MediaWiki image node.
 *
 * @class
 * @extends ve.ce.BranchNode
 * @mixes ve.ce.MWImageNode
 *
 * @constructor
 * @param {ve.dm.MWBlockImageNode} model Model to observe
 * @param {Object} [config] Configuration options
 */
ve.ce.MWBlockImageNode = function VeCeMWBlockImageNode() {
    // Parent constructor
    ve.ce.MWBlockImageNode.super.apply( this, arguments );

    const type = this.model.getAttribute( 'type' );
    const isError = this.model.getAttribute( 'isError' );

    // DOM Hierarchy for MWBlockImageNode:
    //   <figure> this.$element (ve-ce-mwBlockImageNode-{type})
    //     <a> this.$a
    //       <img> this.$image
    //     <figcaption> ve.ce.MWImageCaptionNode

    let $image, $focusable;
    // Build DOM:
    if ( isError ) {
        $image = $( [] );
        const $missingImage = $( '<span>' )
            .addClass( 'mw-file-element mw-broken-media' )
            .text( this.model.getAttribute( 'errorText' ) );
        this.$a = $( '<a>' )
            .addClass( 'new' )
            .append( $missingImage );
        $focusable = $missingImage;
    } else {
        $image = $( '<img>' )
            .addClass( 'mw-file-element' )
            .attr( 'src', this.getResolvedAttribute( 'src' ) );
        this.$a = $( '<a>' )
            .addClass( 'mw-file-description' )
            .append( $image );
        // T322704
        ve.setAttributeSafe( this.$a[ 0 ], 'href', this.getResolvedAttribute( 'href' ) || '', '#' );
        $focusable = $image;
    }

    this.$element
        .prepend( this.$a )
        // The following classes are used here:
        // * ve-ce-mwBlockImageNode-type-thumb
        // * ve-ce-mwBlockImageNode-type-frame
        // * ve-ce-mwBlockImageNode-type-frameless
        // * ve-ce-mwBlockImageNode-type-none
        .addClass( 've-ce-mwBlockImageNode ve-ce-mwBlockImageNode-type-' + type )
        // 'typeof' should appear with the proper Parsoid-generated
        // type. The model deals with converting it
        .attr( 'typeof', this.model.getRdfa() );

    // Mixin constructors
    ve.ce.MWImageNode.call( this, $focusable, $image );

    // Initialization
    this.updateSize();
};

/* Inheritance */

OO.inheritClass( ve.ce.MWBlockImageNode, ve.ce.BranchNode );

// Need to mixin base class as well (T92540)
OO.mixinClass( ve.ce.MWBlockImageNode, ve.ce.GeneratedContentNode );

OO.mixinClass( ve.ce.MWBlockImageNode, ve.ce.MWImageNode );

/* Static Properties */

ve.ce.MWBlockImageNode.static.name = 'mwBlockImage';

ve.ce.MWBlockImageNode.static.tagName = 'figure';

ve.ce.MWBlockImageNode.static.renderHtmlAttributes = false;

ve.ce.MWBlockImageNode.static.autoFocus = false;

ve.ce.MWBlockImageNode.static.cssClasses = {
    default: {
        left: 'mw-halign-left',
        right: 'mw-halign-right',
        center: 'mw-halign-center',
        none: 'mw-halign-none'
    },
    none: {
        left: 'mw-halign-left',
        right: 'mw-halign-right',
        center: 'mw-halign-center',
        none: 'mw-halign-none'
    }
};

/* Methods */

/**
 * Update CSS classes based on alignment and type
 *
 * @param {string} [oldAlign] The old alignment, for removing classes
 */
ve.ce.MWBlockImageNode.prototype.updateClasses = function ( oldAlign ) {
    const align = this.model.getAttribute( 'align' );

    if ( oldAlign && oldAlign !== align ) {
        // Remove previous alignment
        // See static.cssClasses
        // eslint-disable-next-line mediawiki/class-doc
        this.$element
            .removeClass( this.getCssClass( 'none', oldAlign ) )
            .removeClass( this.getCssClass( 'default', oldAlign ) );
    }

    const type = this.model.getAttribute( 'type' );
    const framed = type !== 'none' && type !== 'frameless';
    const alignClass = this.getCssClass( framed ? 'default' : 'none', align );
    this.$image.toggleClass( 've-ce-mwBlockImageNode-thumbimage', framed );
    // eslint-disable-next-line mediawiki/class-doc
    this.$element.addClass( alignClass );

    // Border
    this.$element.toggleClass( 'mw-image-border', !!this.model.getAttribute( 'borderImage' ) );

    this.showHandles( {
        'mw-halign-right': [ 'sw' ],
        'mw-halign-left': [ 'se' ],
        'mw-halign-center': [ 'sw', 'se' ]
        // Defaults to undefined
    }[ alignClass ] );
};

/**
 * Redraw the image and its wrappers at the specified dimensions
 *
 * The current dimensions from the model are used if none are specified.
 *
 * @param {Object} [dimensions] Dimension object containing width & height
 */
ve.ce.MWBlockImageNode.prototype.updateSize = function ( dimensions ) {
    const isError = this.model.getAttribute( 'isError' );

    if ( isError ) {
        this.$element.css( { width: '', height: '' } );
        return;
    }

    if ( !dimensions ) {
        dimensions = {
            width: this.model.getAttribute( 'width' ),
            height: this.model.getAttribute( 'height' )
        };
    }

    this.$image.css( dimensions );

    const type = this.model.getAttribute( 'type' );
    const borderImage = this.model.getAttribute( 'borderImage' );
    const hasBorderOrFrame = ( type !== 'none' && type !== 'frameless' ) || borderImage;

    // Make sure $element is sharing the dimensions, otherwise 'middle' and 'none'
    // positions don't work properly
    this.$element.css( {
        width: dimensions.width + ( hasBorderOrFrame ? 2 : 0 ),
        height: hasBorderOrFrame ? 'auto' : dimensions.height
    } );
    this.$element.toggleClass( 'mw-default-size', !!this.model.getAttribute( 'defaultSize' ) );
};

/**
 * Get the right CSS class to use for alignment
 *
 * @param {string} type 'none' or 'default'
 * @param {string} alignment 'left', 'right', 'center', 'none' or 'default'
 * @return {string} CSS class
 */
ve.ce.MWBlockImageNode.prototype.getCssClass = function ( type, alignment ) {
    // TODO use this.model.getAttribute( 'type' ) etc., see T54065
    // Default is different between RTL and LTR wikis:
    if ( type === 'default' && alignment === 'default' ) {
        if ( this.getModel().getDocument().getDir() === 'rtl' ) {
            return 'mw-halign-left';
        } else {
            return 'mw-halign-right';
        }
    } else {
        return this.constructor.static.cssClasses[ type ][ alignment ];
    }
};

/**
 * Override the default onSetup to add direction-dependent
 * classes to the image thumbnail.
 */
ve.ce.MWBlockImageNode.prototype.onSetup = function () {
    // Parent method
    ve.ce.MWBlockImageNode.super.prototype.onSetup.call( this );

    this.updateClasses();
};

/**
 * @inheritdoc
 */
ve.ce.MWBlockImageNode.prototype.onAttributeChange = function ( key, from, to ) {
    // Mixin method
    ve.ce.MWImageNode.prototype.onAttributeChange.apply( this, arguments );

    if ( key === 'height' || key === 'width' ) {
        to = parseInt( to, 10 );
    }

    if ( from !== to ) {
        switch ( key ) {
            case 'align':
                this.updateClasses( from );
                break;
            case 'src':
                this.$image.attr( 'src', this.getResolvedAttribute( 'src' ) );
                break;
            case 'width':
                this.updateSize( {
                    width: to,
                    height: this.model.getAttribute( 'height' )
                } );
                break;
            case 'height':
                this.updateSize( {
                    width: this.model.getAttribute( 'width' ),
                    height: to
                } );
                break;
            case 'type':
                // See constructor for types used
                // eslint-disable-next-line mediawiki/class-doc
                this.$element
                    .removeClass( 've-ce-mwBlockImageNode-type-' + from )
                    .addClass( 've-ce-mwBlockImageNode-type-' + to )
                    .attr( 'typeof', this.model.getRdfa() );

                this.updateClasses();
                this.updateSize();
                break;
            case 'borderImage':
                this.updateClasses();
                this.updateSize();
                break;
            // Other image attributes if they exist
            case 'alt':
                if ( !to ) {
                    this.$image.removeAttr( key );
                } else {
                    this.$image.attr( key, to );
                }
                break;
            case 'mediaType':
                this.updateMediaType();
                break;
            case 'defaultSize':
                this.$element.toggleClass( 'mw-default-size', to );
                break;
        }
    }
};

/**
 * @param {Object} dimensions New dimensions
 */
ve.ce.MWBlockImageNode.prototype.onResizableResizing = function ( dimensions ) {
    if ( !this.outline ) {
        ve.ce.ResizableNode.prototype.onResizableResizing.call( this, dimensions );

        this.updateSize( dimensions );
    }
};

ve.ce.MWBlockImageNode.prototype.getDomPosition = function () {
    // We need to override this because this.$element can have children other than renderings of child
    // CE nodes (specifically, the image itself, this.$a), which throws the calculations out of whack.
    // Luckily, MWBlockImageNode is very simple and can contain at most one other node: its caption,
    // which is always inserted at the end.
    const domNode = this.$element.last()[ 0 ];
    return {
        node: domNode,
        offset: domNode.childNodes.length
    };
};

/* Registration */

ve.ce.nodeFactory.register( ve.ce.MWBlockImageNode );