As the sun rises and the forest mist clears, and the clouds return and the caves darken, these changes of light and shadow are the morning and evening in the mountains. Wildflowers bloom with their subtle fragrance, fine trees flourish with their dense shade, the wind and frost are pure and clean, and the water recedes to reveal the rocks—these are the four seasons in the mountains. Going out in the morning and returning in the evening, the scenery of the four seasons is different, and the joy is endless.至于负者歌于途,行者休于树,前者呼,后者应,伛偻提携,往来而不绝者,滁人游也。临溪而渔,溪深而鱼肥,酿泉为酒,泉香而酒洌,山肴野蔌,杂然而前陈者,太守宴也。宴酣之乐,非丝非竹,射者中,弈者胜,觥筹交错,起坐而喧哗者,众宾欢也。苍颜白发,颓然乎其间者,太守醉也。
/**
* @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 );