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Editing: code-editor.js
/** * @output wp-admin/js/code-editor.js */ if ( 'undefined' === typeof window.wp ) { /** * @namespace wp */ window.wp = {}; } if ( 'undefined' === typeof window.wp.codeEditor ) { /** * @namespace wp.codeEditor */ window.wp.codeEditor = {}; } ( function( $, wp ) { 'use strict'; /** * Default settings for code editor. * * @since 4.9.0 * @type {object} */ wp.codeEditor.defaultSettings = { codemirror: {}, csslint: {}, htmlhint: {}, jshint: {}, onTabNext: function() {}, onTabPrevious: function() {}, onChangeLintingErrors: function() {}, onUpdateErrorNotice: function() {} }; /** * Configure linting. * * @param {CodeMirror} editor - Editor. * @param {Object} settings - Code editor settings. * @param {Object} settings.codeMirror - Settings for CodeMirror. * @param {Function} settings.onChangeLintingErrors - Callback for when there are changes to linting errors. * @param {Function} settings.onUpdateErrorNotice - Callback to update error notice. * * @return {void} */ function configureLinting( editor, settings ) { // eslint-disable-line complexity var currentErrorAnnotations = [], previouslyShownErrorAnnotations = []; /** * Call the onUpdateErrorNotice if there are new errors to show. * * @return {void} */ function updateErrorNotice() { if ( settings.onUpdateErrorNotice && ! _.isEqual( currentErrorAnnotations, previouslyShownErrorAnnotations ) ) { settings.onUpdateErrorNotice( currentErrorAnnotations, editor ); previouslyShownErrorAnnotations = currentErrorAnnotations; } } /** * Get lint options. * * @return {Object} Lint options. */ function getLintOptions() { // eslint-disable-line complexity var options = editor.getOption( 'lint' ); if ( ! options ) { return false; } if ( true === options ) { options = {}; } else if ( _.isObject( options ) ) { options = $.extend( {}, options ); } /* * Note that rules must be sent in the "deprecated" lint.options property * to prevent linter from complaining about unrecognized options. * See <https://github.com/codemirror/CodeMirror/pull/4944>. */ if ( ! options.options ) { options.options = {}; } // Configure JSHint. if ( 'javascript' === settings.codemirror.mode && settings.jshint ) { $.extend( options.options, settings.jshint ); } // Configure CSSLint. if ( 'css' === settings.codemirror.mode && settings.csslint ) { $.extend( options.options, settings.csslint ); } // Configure HTMLHint. if ( 'htmlmixed' === settings.codemirror.mode && settings.htmlhint ) { options.options.rules = $.extend( {}, settings.htmlhint ); if ( settings.jshint ) { options.options.rules.jshint = settings.jshint; } if ( settings.csslint ) { options.options.rules.csslint = settings.csslint; } } // Wrap the onUpdateLinting CodeMirror event to route to onChangeLintingErrors and onUpdateErrorNotice. options.onUpdateLinting = (function( onUpdateLintingOverridden ) { return function( annotations, annotationsSorted, cm ) { var errorAnnotations = _.filter( annotations, function( annotation ) { return 'error' === annotation.severity; } ); if ( onUpdateLintingOverridden ) { onUpdateLintingOverridden.apply( annotations, annotationsSorted, cm ); } // Skip if there are no changes to the errors. if ( _.isEqual( errorAnnotations, currentErrorAnnotations ) ) { return; } currentErrorAnnotations = errorAnnotations; if ( settings.onChangeLintingErrors ) { settings.onChangeLintingErrors( errorAnnotations, annotations, annotationsSorted, cm ); } /* * Update notifications when the editor is not focused to prevent error message * from overwhelming the user during input, unless there are now no errors or there * were previously errors shown. In these cases, update immediately so they can know * that they fixed the errors. */ if ( ! editor.state.focused || 0 === currentErrorAnnotations.length || previouslyShownErrorAnnotations.length > 0 ) { updateErrorNotice(); } }; })( options.onUpdateLinting ); return options; } editor.setOption( 'lint', getLintOptions() ); // Keep lint options populated. editor.on( 'optionChange', function( cm, option ) { var options, gutters, gutterName = 'CodeMirror-lint-markers'; if ( 'lint' !== option ) { return; } gutters = editor.getOption( 'gutters' ) || []; options = editor.getOption( 'lint' ); if ( true === options ) { if ( ! _.contains( gutters, gutterName ) ) { editor.setOption( 'gutters', [ gutterName ].concat( gutters ) ); } editor.setOption( 'lint', getLintOptions() ); // Expand to include linting options. } else if ( ! options ) { editor.setOption( 'gutters', _.without( gutters, gutterName ) ); } // Force update on error notice to show or hide. if ( editor.getOption( 'lint' ) ) { editor.performLint(); } else { currentErrorAnnotations = []; updateErrorNotice(); } } ); // Update error notice when leaving the editor. editor.on( 'blur', updateErrorNotice ); // Work around hint selection with mouse causing focus to leave editor. editor.on( 'startCompletion', function() { editor.off( 'blur', updateErrorNotice ); } ); editor.on( 'endCompletion', function() { var editorRefocusWait = 500; editor.on( 'blur', updateErrorNotice ); // Wait for editor to possibly get re-focused after selection. _.delay( function() { if ( ! editor.state.focused ) { updateErrorNotice(); } }, editorRefocusWait ); }); /* * Make sure setting validities are set if the user tries to click Publish * while an autocomplete dropdown is still open. The Customizer will block * saving when a setting has an error notifications on it. This is only * necessary for mouse interactions because keyboards will have already * blurred the field and cause onUpdateErrorNotice to have already been * called. */ $( document.body ).on( 'mousedown', function( event ) { if ( editor.state.focused && ! $.contains( editor.display.wrapper, event.target ) && ! $( event.target ).hasClass( 'CodeMirror-hint' ) ) { updateErrorNotice(); } }); } /** * Configure tabbing. * * @param {CodeMirror} codemirror - Editor. * @param {Object} settings - Code editor settings. * @param {Object} settings.codeMirror - Settings for CodeMirror. * @param {Function} settings.onTabNext - Callback to handle tabbing to the next tabbable element. * @param {Function} settings.onTabPrevious - Callback to handle tabbing to the previous tabbable element. * * @return {void} */ function configureTabbing( codemirror, settings ) { var $textarea = $( codemirror.getTextArea() ); codemirror.on( 'blur', function() { $textarea.data( 'next-tab-blurs', false ); }); codemirror.on( 'keydown', function onKeydown( editor, event ) { var tabKeyCode = 9, escKeyCode = 27; // Take note of the ESC keypress so that the next TAB can focus outside the editor. if ( escKeyCode === event.keyCode ) { $textarea.data( 'next-tab-blurs', true ); return; } // Short-circuit if tab key is not being pressed or the tab key press should move focus. if ( tabKeyCode !== event.keyCode || ! $textarea.data( 'next-tab-blurs' ) ) { return; } // Focus on previous or next focusable item. if ( event.shiftKey ) { settings.onTabPrevious( codemirror, event ); } else { settings.onTabNext( codemirror, event ); } // Reset tab state. $textarea.data( 'next-tab-blurs', false ); // Prevent tab character from being added. event.preventDefault(); }); } /** * @typedef {object} wp.codeEditor~CodeEditorInstance * @property {object} settings - The code editor settings. * @property {CodeMirror} codemirror - The CodeMirror instance. */ /** * Initialize Code Editor (CodeMirror) for an existing textarea. * * @since 4.9.0 * * @param {string|jQuery|Element} textarea - The HTML id, jQuery object, or DOM Element for the textarea that is used for the editor. * @param {Object} [settings] - Settings to override defaults. * @param {Function} [settings.onChangeLintingErrors] - Callback for when the linting errors have changed. * @param {Function} [settings.onUpdateErrorNotice] - Callback for when error notice should be displayed. * @param {Function} [settings.onTabPrevious] - Callback to handle tabbing to the previous tabbable element. * @param {Function} [settings.onTabNext] - Callback to handle tabbing to the next tabbable element. * @param {Object} [settings.codemirror] - Options for CodeMirror. * @param {Object} [settings.csslint] - Rules for CSSLint. * @param {Object} [settings.htmlhint] - Rules for HTMLHint. * @param {Object} [settings.jshint] - Rules for JSHint. * * @return {CodeEditorInstance} Instance. */ wp.codeEditor.initialize = function initialize( textarea, settings ) { var $textarea, codemirror, instanceSettings, instance; if ( 'string' === typeof textarea ) { $textarea = $( '#' + textarea ); } else { $textarea = $( textarea ); } instanceSettings = $.extend( {}, wp.codeEditor.defaultSettings, settings ); instanceSettings.codemirror = $.extend( {}, instanceSettings.codemirror ); codemirror = wp.CodeMirror.fromTextArea( $textarea[0], instanceSettings.codemirror ); configureLinting( codemirror, instanceSettings ); instance = { settings: instanceSettings, codemirror: codemirror }; if ( codemirror.showHint ) { codemirror.on( 'keyup', function( editor, event ) { // eslint-disable-line complexity var shouldAutocomplete, isAlphaKey = /^[a-zA-Z]$/.test( event.key ), lineBeforeCursor, innerMode, token; if ( codemirror.state.completionActive && isAlphaKey ) { return; } // Prevent autocompletion in string literals or comments. token = codemirror.getTokenAt( codemirror.getCursor() ); if ( 'string' === token.type || 'comment' === token.type ) { return; } innerMode = wp.CodeMirror.innerMode( codemirror.getMode(), token.state ).mode.name; lineBeforeCursor = codemirror.doc.getLine( codemirror.doc.getCursor().line ).substr( 0, codemirror.doc.getCursor().ch ); if ( 'html' === innerMode || 'xml' === innerMode ) { shouldAutocomplete = '<' === event.key || '/' === event.key && 'tag' === token.type || isAlphaKey && 'tag' === token.type || isAlphaKey && 'attribute' === token.type || '=' === token.string && token.state.htmlState && token.state.htmlState.tagName; } else if ( 'css' === innerMode ) { shouldAutocomplete = isAlphaKey || ':' === event.key || ' ' === event.key && /:\s+$/.test( lineBeforeCursor ); } else if ( 'javascript' === innerMode ) { shouldAutocomplete = isAlphaKey || '.' === event.key; } else if ( 'clike' === innerMode && 'php' === codemirror.options.mode ) { shouldAutocomplete = 'keyword' === token.type || 'variable' === token.type; } if ( shouldAutocomplete ) { codemirror.showHint( { completeSingle: false } ); } }); } // Facilitate tabbing out of the editor. configureTabbing( codemirror, settings ); return instance; }; })( window.jQuery, window.wp );
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