User:Sohom Datta/page carousel.js

/* Page image carousel * ================================================================== * page_carousel.js * * Adds forward/back and reset arrows to the ProofreadPage edit mode image. * * This is useful for quickly checking things on the next/previous pages, * for example new paragraphs, running headers, and so on. * * Configuration is done with this hook * * mw.hook( "page_carousel.config" ).add(function(cfg) { *  cfg.debug = true; * }); * * Options: * * debug: boolean, true to print debugging messages * ================================================================== */

( function {

const signature = 'page_carousel', version = '1.1';

const CFG = { debug: false };

mw.hook( signature + '.config' ).fire( CFG );

mw.messages.set( {		'ext.gadget.carousel.home': 'Return to original page ($1)',		'ext.gadget.carousel.next': 'Load next page',		'ext.gadget.carousel.prev': 'Load previous page',		'ext.gadget.carousel.current': 'The currently visible page'	} );

let addedIndex; /* eslint-disable-next-line no-jquery/no-global-selector */ const $prpImg = $( '.prp-page-image img' );

// Gets the page number from the current page (assuming Page namespace) function getPageNum { return parseInt( mw.config.get( 'wgPageName' ).split( /\// ).pop ); }

const startPage = getPageNum; let currPage = startPage;

let currPageLabel;

const log = function ( s ) { if ( CFG.debug ) { /* eslint-disable-next-line no-console */ console.log( signature + ': ' + s ); }		},

setCurrPageLabel = function { if ( currPageLabel ) { currPageLabel.$element .html( currPage ) .css( 'font-style', ( currPage === startPage ) ? 'italic' : 'normal' ); }		},

changePage = function {

log( 'Carousel changing page to page ' + currPage );

if ( addedIndex === undefined ) { addedIndex = mw.proofreadpage.openseadragon.viewer.world.getItemCount; }

const addedItem = mw.proofreadpage.openseadragon.viewer.world.getItemAt( addedIndex );

// handler for when a highres image is set using the srcset attribute // tl'dr store it and restore it for the original page but us the normal images // for other pages if ( currPage === startPage ) { if ( addedItem ) { mw.proofreadpage.openseadragon.viewer.world.removeItem( addedItem ); addedIndex = undefined; }			} else { const src = mw.config.get('prpImageFullSize').replace( /page[0-9]+-/, 'page' + currPage + '-' );

log( 'New image: ' + src );

// set the new image source mw.proofreadpage.openseadragon.viewer .addSimpleImage( {						index: addedIndex,						replace: !!addedItem,						url: src					} ); }

// update label setCurrPageLabel; },

advPage = function ( step ) { currPage += step; changePage; },

resetPage = function { currPage = startPage; changePage; },

installCarousel = function { const $controlBox = $( ' ' ) .attr( 'id', 'page-carousel-ctrls' ) .css( {						position: 'absolute',						top: '0px',						right: '0px'					} ),

// Create an icon. prevIcon = new OO.ui.IconWidget( {					icon: 'previous',					title: mw.msg( 'ext.gadget.carousel.next' )				} ),

nextIcon = new OO.ui.IconWidget( {					icon: 'next',					title: mw.msg( 'ext.gadget.carousel.next' )				} ),

resetIcon = new OO.ui.IconWidget( {					icon: 'home',					title: mw.msg( 'ext.gadget.carousel.home', startPage )				} );

currPageLabel = new OO.ui.LabelWidget( {				label: 'Current',				title: mw.msg( 'ext.gadget.carousel.current' )			} );

$( prevIcon.$element ).on( 'click', function {				advPage( -1 );			} ); $( nextIcon.$element ).on( 'click', function {				advPage( 1 );			} ); $( resetIcon.$element ).on( 'click', function {				resetPage;			} );

// Append the icons $controlBox.append( prevIcon.$element, resetIcon.$element, nextIcon.$element,				currPageLabel.$element );

$controlBox .find( '.oo-ui-iconWidget' ) .css( 'cursor', 'pointer' );

// mw.proofreadpage.$viewportControls $( '.prp-page-image' ) .append( $controlBox );

setCurrPageLabel; };

$( function {

// only care for editing in the Page: namespace if ( !( mw.config.get( 'wgAction' ) === 'edit' || mw.config.get( 'wgAction' ) === 'submit' ) ||			mw.config.get( 'wgCanonicalNamespace' ) !== 'Page' ) { return; }

mw.loader.using( 'oojs-ui-core' ).done( function {			mw.hook( 'ext.proofreadpage.osd-controller-available' ).add( function  { log( 'Installing page image carousel. Version: ' + version ); installCarousel; } );		} );	} );

} );