/* Ace syntax-highlighting code editor extension for wikiEditor */ /*global require, ace, confirm, prompt */ ( function ( $, mw ) { $.wikiEditor.modules.codeEditor = { /** * Core Requirements */ req: [ 'codeEditor' ], /** * Compatability map */ browsers: { msie: [ [ '>=', 8 ] ], ipod: [ [ '>=', 6 ] ], iphone: [ [ '>=', 6 ] ], android: [ [ '>=', 4 ] ] }, /** * Configuration */ cfg: { // }, /** * API accessible functions */ api: { // }, /** * Event handlers */ evt: { // }, /** * Internally used functions */ fn: { } }; $.wikiEditor.extensions.codeEditor = function ( context ) { var saveAndExtend, textSelectionFn, hasErrorsOnSave = false, selectedLine = 0, cookieEnabled, returnFalse = function () { return false; }, api = new mw.Api(); // Initialize state cookieEnabled = parseInt( mw.cookie.get( 'codeEditor-' + context.instance + '-showInvisibleChars' ), 10 ); context.showInvisibleChars = ( cookieEnabled === 1 ); cookieEnabled = parseInt( mw.cookie.get( 'codeEditor-' + context.instance + '-lineWrappingActive' ), 10 ); context.lineWrappingActive = ( cookieEnabled === 1 ); context.showSearchReplace = 0; /* * Event Handlers * * WikiEditor inspects the 'evt' object for event names and uses them if present as additional * event handlers that fire before the default handling. * To prevent WikiEditor from running its own handling, handlers should return false. * * This is also where we can attach some extra information to the events. */ context.evt = $.extend( context.evt, { keydown: returnFalse, change: returnFalse, delayedChange: returnFalse, cut: returnFalse, paste: returnFalse, ready: returnFalse, codeEditorSubmit: function () { context.evt.codeEditorSync(); if ( hasErrorsOnSave ) { hasErrorsOnSave = false; return confirm( mw.msg( 'codeeditor-save-with-errors' ) ); } }, codeEditorSave: function () { var i, annotations = context.codeEditor.getSession().getAnnotations(); for ( i = 0; i < annotations.length; i++ ) { if ( annotations[ i ].type === 'error' ) { hasErrorsOnSave = true; break; } } }, codeEditorSync: function () { context.$textarea.val( context.$textarea.textSelection( 'getContents' ) ); } } ); context.codeEditorActive = mw.user.options.get( 'usecodeeditor' ) !== '0'; /** * Internally used functions */ context.fn = $.extend( context.fn, { isCodeEditorActive: function () { return context.codeEditorActive; }, isShowInvisibleChars: function () { return context.showInvisibleChars; }, isLineWrappingActive: function () { return context.lineWrappingActive; }, changeCookieValue: function ( cookieName, value ) { mw.cookie.set( 'codeEditor-' + context.instance + '-' + cookieName, value ); }, aceGotoLineColumn: function () { var lineinput = prompt( 'Enter line number:', 'line:column' ), matches = lineinput ? lineinput.split( ':' ) : [], line = 0, column = 0; if ( matches.length > 0 ) { line = parseInt( matches[ 0 ], 10 ) || 0; line--; } if ( matches.length > 1 ) { column = parseInt( matches[ 1 ], 10 ) || 0; column--; } context.codeEditor.navigateTo( line, column ); // Scroll up a bit to give some context context.codeEditor.scrollToRow( line - 4 ); }, setupCodeEditorToolbar: function () { var toggleEditor, toggleInvisibleChars, toggleSearchReplace, toggleLineWrapping, indent, outdent, gotoLine; toggleEditor = function ( context ) { context.codeEditorActive = !context.codeEditorActive; context.fn.setCodeEditorPreference( context.codeEditorActive ); context.fn.updateCodeEditorToolbarButton(); if ( context.codeEditorActive ) { // set it back up! context.fn.setupCodeEditor(); } else { context.fn.disableCodeEditor(); } }; toggleInvisibleChars = function ( context ) { context.showInvisibleChars = !context.showInvisibleChars; context.fn.changeCookieValue( 'showInvisibleChars', context.showInvisibleChars ? 1 : 0 ); context.fn.updateInvisibleCharsButton(); context.codeEditor.setShowInvisibles( context.showInvisibleChars ); }; toggleSearchReplace = function ( context ) { context.showSearchReplace = !context.showSearchReplace; if ( context.showSearchReplace ) { ace.config.loadModule( 'ace/ext/searchbox', function ( e ) { // ace.editor.searchBox.show(); e.Search( context.codeEditor, !0 ); } ); } else { context.codeEditor.searchBox.hide(); } }; toggleLineWrapping = function ( context ) { context.lineWrappingActive = !context.lineWrappingActive; context.fn.changeCookieValue( 'lineWrappingActive', context.lineWrappingActive ? 1 : 0 ); context.fn.updateLineWrappingButton(); context.codeEditor.getSession().setUseWrapMode( context.lineWrappingActive ); }; indent = function ( context ) { context.codeEditor.execCommand( 'indent' ); }; outdent = function ( context ) { context.codeEditor.execCommand( 'outdent' ); }; gotoLine = function ( context ) { context.codeEditor.execCommand( 'gotolinecolumn' ); }; context.api.addToToolbar( context, { section: 'main', groups: { 'codeeditor-main': { tools: { codeEditor: { labelMsg: 'codeeditor-toolbar-toggle', type: 'button', offset: [ 0, 0 ], action: { type: 'callback', execute: toggleEditor } } } }, 'codeeditor-format': { tools: { indent: { labelMsg: 'codeeditor-indent', type: 'button', offset: [ 0, 0 ], action: { type: 'callback', execute: indent } }, outdent: { labelMsg: 'codeeditor-outdent', type: 'button', offset: [ 0, 0 ], action: { type: 'callback', execute: outdent } } } }, 'codeeditor-style': { tools: { invisibleChars: { labelMsg: 'codeeditor-invisibleChars-toggle', type: 'button', offset: [ 0, 0 ], action: { type: 'callback', execute: toggleInvisibleChars } }, lineWrapping: { labelMsg: 'codeeditor-lineWrapping-toggle', type: 'button', offset: [ 0, 0 ], action: { type: 'callback', execute: toggleLineWrapping } }, gotoLine: { labelMsg: 'codeeditor-gotoline', type: 'button', offset: [ 0, 0 ], action: { type: 'callback', execute: gotoLine } }, toggleSearchReplace: { labelMsg: 'codeeditor-searchReplace-toggle', type: 'button', offset: [ 0, 0 ], action: { type: 'callback', execute: toggleSearchReplace } } } } } } ); context.fn.updateCodeEditorToolbarButton(); context.fn.updateInvisibleCharsButton(); context.fn.updateLineWrappingButton(); $( '.group-codeeditor-style' ).prependTo( '.section-main' ); $( '.group-codeeditor-format' ).prependTo( '.section-main' ); $( '.group-codeeditor-main' ).prependTo( '.section-main' ); }, updateButtonIcon: function ( targetName, iconFn ) { var target = '.tool[rel=' + targetName + ']', $icon = context.modules.toolbar.$toolbar.find( target ); $icon.toggleClass( 'icon-active', iconFn() ); }, updateCodeEditorToolbarButton: function () { context.fn.updateButtonIcon( 'codeEditor', context.fn.isCodeEditorActive ); }, updateInvisibleCharsButton: function () { context.fn.updateButtonIcon( 'invisibleChars', context.fn.isShowInvisibleChars ); }, updateLineWrappingButton: function () { context.fn.updateButtonIcon( 'lineWrapping', context.fn.isLineWrappingActive ); }, setCodeEditorPreference: function ( prefValue ) { // Do not try to save options for anonymous user if ( mw.user.isAnon() ) { return; } // Abort any previous request api.abort(); api.saveOption( 'usecodeeditor', prefValue ? 1 : 0 ) .fail( function ( code, result ) { var message; if ( code === 'http' && result.textStatus === 'abort' ) { // Request was aborted. Ignore error return; } message = 'Failed to set code editor preference: ' + code; if ( result.error && result.error.info ) { message += '\n' + result.error.info; } mw.log.warn( message ); } ); }, /** * Sets up the iframe in place of the textarea to allow more advanced operations */ setupCodeEditor: function () { var box, lang, basePath, container, editdiv, session, AceLangMode; box = context.$textarea; lang = mw.config.get( 'wgCodeEditorCurrentLanguage' ); basePath = mw.config.get( 'wgExtensionAssetsPath', '' ); if ( basePath.substring( 0, 2 ) === '//' ) { // ACE uses web workers, which have importScripts, which don't like relative links. // This is a problem only when the assets are on another server, so this rewrite should suffice // Protocol relative basePath = window.location.protocol + basePath; } ace.config.set( 'basePath', basePath + '/CodeEditor/modules/ace' ); if ( lang ) { // Ace doesn't like replacing a textarea directly. // We'll stub this out to sit on top of it... // line-height is needed to compensate for oddity in WikiEditor extension, which zeroes the line-height on a parent container container = context.$codeEditorContainer = $( '
' ).insertAfter( box ); editdiv = container.find( '.editor' ); box.css( 'display', 'none' ); container.height( box.height() ); // Non-lazy loaded dependencies: Enable code completion ace.require( 'ace/ext/language_tools' ); // Load the editor now context.codeEditor = ace.edit( editdiv[ 0 ] ); context.codeEditor.getSession().setValue( box.val() ); box.textSelection( 'register', textSelectionFn ); // Disable some annoying commands context.codeEditor.commands.removeCommand( 'replace' ); // ctrl+R context.codeEditor.commands.removeCommand( 'transposeletters' ); // ctrl+T context.codeEditor.commands.removeCommand( 'gotoline' ); // ctrl+L context.codeEditor.setReadOnly( box.prop( 'readonly' ) ); context.codeEditor.setShowInvisibles( context.showInvisibleChars ); // The options to enable context.codeEditor.setOptions( { enableBasicAutocompletion: true, enableSnippets: true } ); context.codeEditor.commands.addCommand( { name: 'gotolinecolumn', bindKey: { mac: 'Command-Shift-L', windows: 'Ctrl-Alt-L' }, exec: context.fn.aceGotoLineColumn, readOnly: true } ); box.closest( 'form' ) .submit( context.evt.codeEditorSubmit ) .find( '#wpSave' ).click( context.evt.codeEditorSave ); session = context.codeEditor.getSession(); // Use proper tabs session.setUseSoftTabs( false ); session.setUseWrapMode( context.lineWrappingActive ); mw.hook( 'codeEditor.configure' ).fire( session ); ace.config.loadModule( 'ace/mode/' + lang, function () { AceLangMode = require( 'ace/mode/' + lang ).Mode; session.setMode( new AceLangMode() ); } ); // Use jquery.ui.resizable so user can make the box taller too container.resizable( { handles: 's', minHeight: box.height(), resize: function () { context.codeEditor.resize(); } } ); $( '.wikiEditor-ui-toolbar' ).addClass( 'codeEditor-ui-toolbar' ); if ( selectedLine > 0 ) { // Line numbers in CodeEditor are zero-based context.codeEditor.navigateTo( selectedLine - 1, 0 ); // Scroll up a bit to give some context context.codeEditor.scrollToRow( selectedLine - 4 ); } context.fn.setupStatusBar(); // Let modules know we're ready to start working with the content context.fn.trigger( 'ready' ); } }, /** * Turn off the code editor view and return to the plain textarea. * May be needed by some folks with funky browsers, or just to compare. */ disableCodeEditor: function () { // Kills it! context.$textarea.closest( 'form' ) .off( 'submit', context.evt.codeEditorSubmit ) .find( '#wpSave' ).off( 'click', context.evt.codeEditorSave ); // Save contents context.$textarea.textSelection( 'unregister' ); context.$textarea.val( textSelectionFn.getContents() ); // @todo fetch cursor, scroll position // Drop the fancy editor widget... context.fn.removeStatusBar(); context.$codeEditorContainer.remove(); context.$codeEditorContainer = undefined; context.codeEditor = undefined; // Restore textarea context.$textarea.show(); // Restore toolbar $( '.wikiEditor-ui-toolbar' ).removeClass( 'codeEditor-ui-toolbar' ); // @todo restore cursor, scroll position }, /** * Start monitoring the fragment of the current window for hash change * events. If the hash is already set, handle it as a new event. */ codeEditorMonitorFragment: function () { function onHashChange() { var regexp, result; regexp = /#mw-ce-l(\d+)/; result = regexp.exec( window.location.hash ); if ( result === null ) { return; } selectedLine = parseInt( result[ 1 ], 10 ); if ( context.codeEditor && selectedLine > 0 ) { // Line numbers in CodeEditor are zero-based context.codeEditor.navigateTo( selectedLine - 1, 0 ); // Scroll up a bit to give some context context.codeEditor.scrollToRow( selectedLine - 4 ); } } onHashChange(); $( window ).on( 'hashchange', onHashChange ); }, /** * This creates a Statusbar, that allows you to see a count of the * errors, warnings and the warning of the current line, as well as * the position of the cursor. */ setupStatusBar: function () { var shouldUpdateAnnotations, shouldUpdateSelection, shouldUpdateLineInfo, nextAnnotation, delayedUpdate, editor = context.codeEditor, lang = require( 'ace/lib/lang' ), $errors = $( '0' ), $warnings = $( '0' ), $infos = $( '0' ), $message = $( '
' ).addClass( 'codeEditor-status-message' ), $lineAndMode = $( '
' ).addClass( 'codeEditor-status-line' ), $workerStatus = $( '
' ) .addClass( 'codeEditor-status-worker' ) .attr( 'title', mw.msg( 'codeeditor-next-annotation' ) ) .append( $errors ) .append( $warnings ) .append( $infos ); context.$statusBar = $( '
' ) .addClass( 'codeEditor-status' ) .append( $workerStatus ) .append( $message ) .append( $lineAndMode ); /* Help function to concatenate strings with different separators */ function addToStatus( status, str, separator ) { if ( str ) { status.push( str, separator || '|' ); } } /** * Update all the information in the status bar */ function updateStatusBar() { var i, c, r, status, annotation, errors = 0, warnings = 0, infos = 0, distance, shortestDistance = Infinity, closestAnnotation, currentLine = editor.selection.lead.row, annotations = editor.getSession().getAnnotations(), closestType; // Reset the next annotation nextAnnotation = null; for ( i = 0; i < annotations.length; i++ ) { annotation = annotations[ i ]; distance = Math.abs( currentLine - annotation.row ); if ( distance < shortestDistance ) { shortestDistance = distance; closestAnnotation = annotation; } if ( nextAnnotation === null && annotation.row > currentLine ) { nextAnnotation = annotation; } switch ( annotations[ i ].type ) { case 'error': errors++; break; case 'warning': warnings++; break; case 'info': infos++; break; } } // Wrap around to the beginning for nextAnnotation if ( nextAnnotation === null && annotations.length > 0 ) { nextAnnotation = annotations[ 0 ]; } // Update the annotation counts if ( shouldUpdateAnnotations ) { $errors.text( errors ); $warnings.text( warnings ); $infos.text( infos ); } // Show the message of the current line, if we have not already done so if ( closestAnnotation && currentLine === closestAnnotation.row && closestAnnotation !== $message.data( 'annotation' ) ) { $message.data( 'annotation', closestAnnotation ); closestType = closestAnnotation.type.charAt( 0 ).toUpperCase() + closestAnnotation.type.slice( 1 ); $message.text( closestType + ': ' + closestAnnotation.text ); } else if ( $message.data( 'annotation' ) !== null && ( !closestAnnotation || currentLine !== closestAnnotation.row ) ) { // If we are on a different line without an annotation, then blank the message $message.data( 'annotation', null ); $message.text( '' ); } // The cursor position has changed if ( shouldUpdateSelection || shouldUpdateLineInfo ) { // Adapted from Ajax.org's ace/ext/statusbar module status = []; if ( editor.$vimModeHandler ) { addToStatus( status, editor.$vimModeHandler.getStatusText() ); } else if ( editor.commands.recording ) { addToStatus( status, 'REC' ); } c = editor.selection.lead; addToStatus( status, ( c.row + 1 ) + ':' + c.column, '' ); if ( !editor.selection.isEmpty() ) { r = editor.getSelectionRange(); addToStatus( status, '(' + ( r.end.row - r.start.row ) + ':' + ( r.end.column - r.start.column ) + ')' ); } status.pop(); $lineAndMode.text( status.join( '' ) ); } shouldUpdateLineInfo = shouldUpdateSelection = shouldUpdateAnnotations = false; } // Function to delay/debounce updates for the StatusBar delayedUpdate = lang.delayedCall( function () { updateStatusBar( editor ); }.bind( this ) ); /** * Click handler that allows you to skip to the next annotation */ $workerStatus.on( 'click', function ( e ) { if ( nextAnnotation ) { context.codeEditor.navigateTo( nextAnnotation.row, nextAnnotation.column ); // Scroll up a bit to give some context context.codeEditor.scrollToRow( nextAnnotation.row - 3 ); e.preventDefault(); } } ); editor.getSession().on( 'changeAnnotation', function () { shouldUpdateAnnotations = true; delayedUpdate.schedule( 100 ); } ); editor.on( 'changeStatus', function () { shouldUpdateLineInfo = true; delayedUpdate.schedule( 100 ); } ); editor.on( 'changeSelection', function () { shouldUpdateSelection = true; delayedUpdate.schedule( 100 ); } ); // Force update shouldUpdateLineInfo = shouldUpdateSelection = shouldUpdateAnnotations = true; updateStatusBar( editor ); context.$statusBar.insertAfter( $( '.wikiEditor-ui-view-wikitext .wikiEditor-ui-bottom' ) ); }, removeStatusBar: function () { context.codeEditor.getSession().removeListener( 'changeAnnotation' ); context.codeEditor.removeListener( 'changeSelection' ); context.codeEditor.removeListener( 'changeStatus' ); context.nextAnnotation = null; context.$statusBar = null; $( '.codeEditor-status' ).remove(); } } ); /** * Override the base functions in a way that lets * us fall back to the originals when we turn off. */ saveAndExtend = function ( base, extended ) { $.map( extended, function ( func, name ) { var orig; if ( name in base ) { orig = base[ name ]; base[ name ] = function () { if ( context.codeEditorActive ) { return func.apply( this, arguments ); } if ( orig ) { return orig.apply( this, arguments ); } throw new Error( 'CodeEditor: no original function to call for ' + name ); }; } else { base[ name ] = func; } } ); }; saveAndExtend( context.fn, { saveCursorAndScrollTop: function () { // Stub out textarea behavior return; }, restoreCursorAndScrollTop: function () { // Stub out textarea behavior return; }, saveSelection: function () { mw.log( 'codeEditor stub function saveSelection called' ); }, restoreSelection: function () { mw.log( 'codeEditor stub function restoreSelection called' ); }, /** * Scroll an element to the top of the iframe */ scrollToTop: function () { mw.log( 'codeEditor stub function scrollToTop called' ); } } ); /** * Compatibility with the $.textSelection jQuery plug-in. When the iframe is in use, these functions provide * equivalant functionality to the otherwise textarea-based functionality. */ textSelectionFn = { /* Needed for search/replace */ getContents: function () { return context.codeEditor.getSession().getValue(); }, setContents: function ( newContents ) { context.codeEditor.getSession().setValue( newContents ); }, /** * Gets the currently selected text in the content * DO NOT CALL THIS DIRECTLY, use $.textSelection( 'functionname', options ) instead */ getSelection: function () { return context.codeEditor.getCopyText(); }, /** * Inserts text at the begining and end of a text selection, optionally inserting text at the caret when * selection is empty. * DO NOT CALL THIS DIRECTLY, use $.textSelection( 'functionname', options ) instead */ encapsulateSelection: function ( options ) { var sel, range, selText, isSample, text; // Does not yet handle 'ownline', 'splitlines' option sel = context.codeEditor.getSelection(); range = sel.getRange(); selText = textSelectionFn.getSelection(); isSample = false; if ( !selText ) { selText = options.peri; isSample = true; } else if ( options.replace ) { selText = options.peri; } text = options.pre; text += selText; text += options.post; context.codeEditor.insert( text ); if ( isSample && options.selectPeri && !options.splitlines ) { // May esplode if anything has newlines, be warned. :) range.setStart( range.start.row, range.start.column + options.pre.length ); range.setEnd( range.start.row, range.start.column + selText.length ); sel.setSelectionRange( range ); } return context.$textarea; }, /** * Gets the position (in resolution of bytes not nessecarily characters) in a textarea * DO NOT CALL THIS DIRECTLY, use $.textSelection( 'functionname', options ) instead */ getCaretPosition: function () { mw.log( 'codeEditor stub function getCaretPosition called' ); }, /** * Sets the selection of the content * DO NOT CALL THIS DIRECTLY, use $.textSelection( 'functionname', options ) instead * * @param {Object} options */ setSelection: function ( options ) { var doc, lines, offsetToPos, start, end, sel, range; // Ace stores positions for ranges as row/column pairs. // To convert from character offsets, we'll need to iterate through the document doc = context.codeEditor.getSession().getDocument(); lines = doc.getAllLines(); offsetToPos = function ( offset ) { var row, col, pos; row = 0; col = 0; pos = 0; while ( row < lines.length && pos + lines[ row ].length < offset ) { pos += lines[ row ].length; pos++; // for the newline row++; } col = offset - pos; return { row: row, column: col }; }; start = offsetToPos( options.start ); end = offsetToPos( options.end ); sel = context.codeEditor.getSelection(); range = sel.getRange(); range.setStart( start.row, start.column ); range.setEnd( end.row, end.column ); sel.setSelectionRange( range ); return context.$textarea; }, /** * Scroll a textarea to the current cursor position. You can set the cursor position with setSelection() * DO NOT CALL THIS DIRECTLY, use $.textSelection( 'functionname', options ) instead */ scrollToCaretPosition: function () { mw.log( 'codeEditor stub function scrollToCaretPosition called' ); return context.$textarea; } }; /* Setup the editor */ context.fn.setupCodeEditorToolbar(); if ( context.codeEditorActive ) { context.fn.setupCodeEditor(); } }; }( jQuery, mediaWiki ) );