mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/CodeMirror
synced 2024-12-18 00:30:30 +00:00
348 lines
11 KiB
JavaScript
348 lines
11 KiB
JavaScript
/* global CodeMirror, mediaWiki */
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( function ( mw, $ ) {
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// codeMirror needs a special textselection jQuery function to work, save the current one to restore when
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// CodeMirror get's disabled.
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var origTextSelection = $.fn.textSelection,
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codeMirror = mw.user.options.get( 'usecodemirror' ) === '1' || mw.user.options.get( 'usecodemirror' ) === 1,
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api = new mw.Api(),
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// function for a textselection function for CodeMirror
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cmTextSelection = function ( command, options ) {
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if ( !codeMirror || codeMirror.getTextArea() !== this[0] ) {
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return origTextSelection.call( this, command, options );
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}
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var fn, retval;
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fn = {
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/**
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* Get the contents of the textarea
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*/
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getContents: function () {
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return codeMirror.doc.getValue();
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},
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/**
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* Get the currently selected text in this textarea. Will focus the textarea
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* in some browsers (IE/Opera)
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*/
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getSelection: function () {
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return codeMirror.doc.getSelection();
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},
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/**
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* Inserts text at the beginning and end of a text selection, optionally
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* inserting text at the caret when selection is empty.
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*/
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encapsulateSelection: function ( options ) {
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return this.each( function () {
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var insertText, selText,
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selectPeri = options.selectPeri,
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pre = options.pre, post = options.post;
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if ( options.selectionStart !== undefined ) {
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//fn[command].call( this, options );
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fn.setSelection( { 'start': options.selectionStart, 'end': options.selectionEnd } ); // not tested
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}
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selText = codeMirror.doc.getSelection();
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if ( !selText ) {
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selText = options.peri;
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} else if ( options.replace ) {
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selectPeri = false;
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selText = options.peri;
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} else {
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selectPeri = false;
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while ( selText.charAt( selText.length - 1 ) === ' ' ) {
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// Exclude ending space char
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selText = selText.substring( 0, selText.length - 1 );
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post += ' ';
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}
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while ( selText.charAt( 0 ) === ' ' ) {
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// Exclude prepending space char
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selText = selText.substring( 1, selText.length );
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pre = ' ' + pre;
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}
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}
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/**
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* Do the splitlines stuff.
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*
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* Wrap each line of the selected text with pre and post
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*/
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function doSplitLines( selText, pre, post ) {
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var i,
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insertText = '',
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selTextArr = selText.split( '\n' );
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for ( i = 0; i < selTextArr.length; i++ ) {
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insertText += pre + selTextArr[i] + post;
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if ( i !== selTextArr.length - 1 ) {
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insertText += '\n';
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}
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}
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return insertText;
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}
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if ( options.splitlines ) {
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selectPeri = false;
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insertText = doSplitLines( selText, pre, post );
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} else {
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insertText = pre + selText + post;
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}
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var startCursor = codeMirror.doc.getCursor( true );
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if ( options.ownline ) {
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if ( startCursor.ch !== 0 ) {
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insertText = '\n' + insertText;
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pre += '\n';
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}
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var endCursor = codeMirror.doc.getCursor( false );
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if ( codeMirror.doc.getLine( endCursor.line ).length !== endCursor.ch ) {
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insertText += '\n';
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post += '\n';
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}
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}
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codeMirror.doc.replaceSelection( insertText );
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if ( selectPeri ) {
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codeMirror.doc.setSelection(
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codeMirror.doc.posFromIndex( codeMirror.doc.indexFromPos( startCursor ) + pre.length ),
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codeMirror.doc.posFromIndex( codeMirror.doc.indexFromPos( startCursor ) + pre.length + selText.length )
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);
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}
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});
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},
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/**
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* Get the position (in resolution of bytes not necessarily characters)
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* in a textarea
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*/
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getCaretPosition: function ( options ) {
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var caretPos = codeMirror.doc.indexFromPos( codeMirror.doc.getCursor( true ) );
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if ( options.startAndEnd ) {
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var endPos = codeMirror.doc.indexFromPos( codeMirror.doc.getCursor( false ) );
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return [ caretPos, endPos ];
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}
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return caretPos;
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},
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setSelection: function ( options ) {
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return this.each( function () {
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codeMirror.doc.setSelection( codeMirror.doc.posFromIndex( options.start ), codeMirror.doc.posFromIndex( options.end ) );
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});
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},
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/**
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* Scroll a textarea to the current cursor position. You can set the cursor
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* position with setSelection()
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* @param options boolean Whether to force a scroll even if the caret position
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* is already visible. Defaults to false
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*/
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scrollToCaretPosition: function ( /* options */ ) {
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return this.each(function () {
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codeMirror.scrollIntoView( null );
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});
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}
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};
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switch ( command ) {
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//case 'getContents': // no params
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//case 'setContents': // no params with defaults
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//case 'getSelection': // no params
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case 'encapsulateSelection':
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options = $.extend( {
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pre: '', // Text to insert before the cursor/selection
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peri: '', // Text to insert between pre and post and select afterwards
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post: '', // Text to insert after the cursor/selection
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ownline: false, // Put the inserted text on a line of its own
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replace: false, // If there is a selection, replace it with peri instead of leaving it alone
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selectPeri: true, // Select the peri text if it was inserted (but not if there was a selection and replace==false, or if splitlines==true)
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splitlines: false, // If multiple lines are selected, encapsulate each line individually
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selectionStart: undefined, // Position to start selection at
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selectionEnd: undefined // Position to end selection at. Defaults to start
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}, options );
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break;
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case 'getCaretPosition':
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options = $.extend( {
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// Return [start, end] instead of just start
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startAndEnd: false
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}, options );
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// FIXME: We may not need character position-based functions if we insert markers in the right places
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break;
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case 'setSelection':
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options = $.extend( {
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// Position to start selection at
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start: undefined,
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// Position to end selection at. Defaults to start
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end: undefined,
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// Element to start selection in (iframe only)
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startContainer: undefined,
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// Element to end selection in (iframe only). Defaults to startContainer
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endContainer: undefined
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}, options );
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if ( options.end === undefined ) {
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options.end = options.start;
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}
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if ( options.endContainer === undefined ) {
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options.endContainer = options.startContainer;
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}
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// FIXME: We may not need character position-based functions if we insert markers in the right places
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break;
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case 'scrollToCaretPosition':
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options = $.extend( {
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force: false // Force a scroll even if the caret position is already visible
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}, options );
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break;
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}
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retval = fn[command].call( this, options );
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codeMirror.focus();
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return retval;
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},
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/**
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* Adds the CodeMirror button to WikiEditor
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*/
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addCodeMirrorToWikiEditor = function () {
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if ( $( '#wikiEditor-section-main' ).length > 0 ) {
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$( '#wpTextbox1' ).wikiEditor(
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'addToToolbar',
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{
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'section': 'main',
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'groups': {
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'codemirror':{
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'tools': {
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'CodeMirror': {
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label: 'CodeMirror',
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type: 'button',
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// FIXME: There should be a better way?
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icon: mw.config.get( 'wgExtensionAssetsPath' ) + '/CodeMirror/resources/images/cm-' + ( codeMirror ? 'on.png' : 'off.png' ),
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action: {
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type: 'callback',
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execute: function( context ) {
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switchCodeMirror( context );
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}
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}
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}
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}
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}
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}
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}
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);
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}
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};
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/**
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* Save CodeMirror enabled pref.
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*
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* @param {Boolean} prefValue True, if CodeMirror should be enabled by default, otherwise false.
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*/
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function setCodeEditorPreference( prefValue ) {
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api.postWithToken( 'options', {
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action: 'options',
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optionname: 'usecodemirror',
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optionvalue: prefValue ? 1 : 0
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} ).fail( function ( code, result ) {
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// FIXME: Should this throw an user visible error message?
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mw.log.warn( 'Failed to set code editor preference: ' + code + '\n' + result.error );
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} );
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}
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/**
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* Enables or disables CodeMirror
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*
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* @param {undefined} context Doc needed
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*/
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function switchCodeMirror( context ) {
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var $img, $src;
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if ( context !== false ) {
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$img = context.modules.toolbar.$toolbar.find( 'img.tool[rel=CodeMirror]' );
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} else {
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$img = $( '#CodeMirrorButton' );
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}
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if ( codeMirror ) {
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setCodeEditorPreference( false );
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codeMirror.save();
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codeMirror.toTextArea();
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codeMirror = false;
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$.fn.textSelection = origTextSelection;
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$src = mw.config.get( 'wgExtensionAssetsPath' ) + '/CodeMirror/resources/images/' + ( context ? 'cm-off.png' : 'old-cm-off.png' );
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$img.attr( 'src', $src );
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} else {
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enableCodeMirror();
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$src = mw.config.get( 'wgExtensionAssetsPath' ) + '/CodeMirror/resources/images/' + ( context ? 'cm-on.png' : 'old-cm-on.png' );
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$img.attr( 'src', $src );
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setCodeEditorPreference( true );
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}
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}
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/**
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* Replaces the default textarea with CodeMirror
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*/
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function enableCodeMirror() {
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var textbox1 = $( '#wpTextbox1' );
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if ( textbox1[0].style.display === 'none' ) {
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return;
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}
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codeMirror = CodeMirror.fromTextArea( textbox1[0], {
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mwextFunctionSynonyms: mw.config.get( 'extCodeMirrorFunctionSynonyms' ),
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mwextTags: mw.config.get( 'extCodeMirrorTags' ),
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mwextDoubleUnderscore: mw.config.get( 'extCodeMirrorDoubleUnderscore' ),
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mwextUrlProtocols: mw.config.get( 'extCodeMirrorUrlProtocols' ),
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mwextModes: mw.config.get( 'extCodeMirrorExtModes' ),
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styleActiveLine: true,
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lineWrapping: true,
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readOnly: textbox1[0].readOnly,
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// select mediawiki as text input mode
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mode: 'text/mediawiki'
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} );
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// Our best friend, IE, needs some special css
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if ( window.navigator.userAgent.indexOf('Trident/') > -1 ) {
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$( '.CodeMirror' ).addClass( 'CodeMirrorIE' );
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}
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// set the hight of the textarea
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codeMirror.setSize( null, textbox1.height() );
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// Overwrite default textselection of WikiEditor to work with CodeMirror, too
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$.fn.textSelection = cmTextSelection;
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}
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/* Check if view is in edit mode and that the required modules are available. Then, customize the toolbar … */
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if ( $.inArray( mw.config.get( 'wgAction' ), [ 'edit', 'submit' ] ) !== -1 ) {
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// This function shouldn't be called without user.options is loaded, but it's not guaranteed
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mw.loader.using( 'user.options', function () {
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// This can be the string "0" if the user disabled the preference - Bug T54542#555387
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if ( mw.user.options.get( 'usebetatoolbar' ) === 1 || mw.user.options.get( 'usebetatoolbar' ) === '1' ) {
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// load wikiEditor's toolbar (if not already) and add our button
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$.when(
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mw.loader.using( 'ext.wikiEditor.toolbar' ), $.ready
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).then( addCodeMirrorToWikiEditor );
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} else {
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// If WikiEditor isn't enabled, add CodeMirror button to the default wiki editor toolbar
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var $image = $( '<img>' ).attr( {
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width: 23,
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height: 22,
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src: mw.config.get( 'wgExtensionAssetsPath' ) + '/CodeMirror/resources/images/old-cm-' + (codeMirror ? 'on.png' : 'off.png'),
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alt: 'CodeMirror',
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title: 'CodeMirror',
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id: 'CodeMirrorButton',
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'class': 'mw-toolbar-editbutton'
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} ).click( function () {
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switchCodeMirror( false );
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return false;
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} );
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$( '#toolbar' ).append( $image );
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}
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} );
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}
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// enable CodeMirror
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if ( codeMirror ) {
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enableCodeMirror();
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}
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}( mediaWiki, jQuery ) );
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