mediawiki.action.view.metadata.js
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mediawiki.action.view.metadata.js
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	/*!
	* Exif metadata display for MediaWiki file uploads
	*
	* Add an expand/collapse link and collapse by default if set to
	* (with JS disabled, user will see all items)
	*
	* See also ImagePage.php#makeMetadataTable (creates the HTML)
	*/
	( function () {
	'use strict';

	$( () => {
	const $tables = $( '.mw_metadata' );
	if ( !$tables.find( '.mw-metadata-collapsible' ).length ) {
	// No collapsible rows present on this page
	return;
	}
	$tables.each( ( _, table ) => {
	const expandText = mw.msg( 'metadata-expand' );
	const collapseText = mw.msg( 'metadata-collapse' );
	const $table = $( table );

	const $link = $( '<a>' )
	.text( expandText )
	.attr( {
	role: 'button',
	tabindex: 0
	} )
	.on( 'click keypress', ( e ) => {
	if (
	e.type === 'click' \|\|
	e.type === 'keypress' && e.which === 13
	) {
	// eslint-disable-next-line no-jquery/no-class-state
	if ( $table.hasClass( 'collapsed' ) ) {
	// From collapsed to expanded. Button will now collapse.
	$( e.currentTarget ).text( collapseText );
	} else {
	// From expanded to collapsed. Button will now expand.
	$( e.currentTarget ).text( expandText );
	}
	// eslint-disable-next-line no-jquery/no-class-state
	$table.toggleClass( 'collapsed' );
	}
	} );

	$table.find( 'tbody' ).append(
	$( '<tr>' ).addClass( 'mw-metadata-show-hide-extended' ).append(
	$( '<td>' ).prop( 'colspan', 2 ).append( $link )
	)
	);
	} );
	} );
	}() );