mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/CodeMirror
synced 2024-11-15 10:19:27 +00:00
272 lines
7.8 KiB
JavaScript
272 lines
7.8 KiB
JavaScript
/*!
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* VisualEditor UserInterface CodeMirrorAction class.
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*
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* @copyright 2011-2017 VisualEditor Team and others; see http://ve.mit-license.org
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*/
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/**
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* CodeMirror action
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*
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* @class
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* @extends ve.ui.Action
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* @constructor
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* @param {ve.ui.Surface} surface Surface to act on
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*/
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ve.ui.CodeMirrorAction = function VeUiCodeMirrorAction() {
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// Parent constructor
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ve.ui.CodeMirrorAction.super.apply( this, arguments );
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};
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/* Inheritance */
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OO.inheritClass( ve.ui.CodeMirrorAction, ve.ui.Action );
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/* Static Properties */
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ve.ui.CodeMirrorAction.static.name = 'codeMirror';
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/**
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* @inheritdoc
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*/
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ve.ui.CodeMirrorAction.static.methods = [ 'toggle' ];
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/* Methods */
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/**
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* @method
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* @param {boolean} [enable] State to force toggle to, inverts current state if undefined
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* @return {boolean} Action was executed
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*/
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ve.ui.CodeMirrorAction.prototype.toggle = function ( enable ) {
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var profile, supportsTransparentText, mirrorElement, tabSizeValue,
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action = this,
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surface = this.surface,
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surfaceView = surface.getView(),
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doc = surface.getModel().getDocument();
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if ( !surface.mirror && enable !== false ) {
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surface.mirror = true;
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mw.loader.using( [
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'ext.CodeMirror.data',
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'ext.CodeMirror.lib',
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'ext.CodeMirror.mode.mediawiki',
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'jquery.client'
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] ).then( function () {
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var config = mw.config.get( 'extCodeMirrorConfig' );
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if ( !surface.mirror ) {
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// Action was toggled to false since promise started
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return;
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}
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mw.loader.using( config.pluginModules, function () {
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if ( !surface.mirror ) {
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// Action was toggled to false since promise started
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return;
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}
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tabSizeValue = surfaceView.documentView.documentNode.$element.css( 'tab-size' );
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surface.mirror = CodeMirror( surfaceView.$element[ 0 ], {
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value: surface.getDom(),
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mwConfig: config,
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readOnly: 'nocursor',
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lineWrapping: true,
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scrollbarStyle: 'null',
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specialChars: /^$/,
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viewportMargin: 5,
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tabSize: tabSizeValue ? +tabSizeValue : 8,
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// select mediawiki as text input mode
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mode: 'text/mediawiki',
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extraKeys: {
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Tab: false,
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'Shift-Tab': false
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},
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matchBrackets: mw.config.get( 'wgCodeMirrorEnableBracketMatching' )
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} );
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// The VE/CM overlay technique only works with monospace fonts (as we use width-changing bold as a highlight)
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// so revert any editfont user preference
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surfaceView.$element.removeClass( 'mw-editfont-sans-serif mw-editfont-serif' ).addClass( 'mw-editfont-monospace' );
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profile = $.client.profile();
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supportsTransparentText = 'WebkitTextFillColor' in document.body.style &&
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// Disable on Firefox+OSX (T175223)
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!( profile.layout === 'gecko' && profile.platform === 'mac' );
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surfaceView.$documentNode.addClass(
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supportsTransparentText ?
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've-ce-documentNode-codeEditor-webkit-hide' :
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've-ce-documentNode-codeEditor-hide'
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);
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/* Events */
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// As the action is regenerated each time, we need to store bound listeners
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// in the mirror for later disconnection.
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surface.mirror.veTransactionListener = action.onDocumentPrecommit.bind( action );
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surface.mirror.veLangChangeListener = action.onLangChange.bind( action );
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surface.mirror.veSelectListener = action.onSelect.bind( action );
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doc.on( 'precommit', surface.mirror.veTransactionListener );
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surfaceView.getDocument().on( 'langChange', surface.mirror.veLangChangeListener );
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surface.getModel().on( 'select', surface.mirror.veSelectListener );
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action.onLangChange();
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ve.init.target.once( 'surfaceReady', function () {
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if ( surface.mirror ) {
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surface.mirror.refresh();
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}
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} );
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} );
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} );
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} else if ( surface.mirror && enable !== true ) {
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if ( surface.mirror !== true ) {
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doc.off( 'precommit', surface.mirror.veTransactionListener );
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surfaceView.getDocument().off( 'langChange', surface.mirror.veLangChangeListener );
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surface.getModel().off( 'select', surface.mirror.veSelectListener );
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// Restore edit-font
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// eslint-disable-next-line mediawiki/class-doc
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surfaceView.$element.removeClass( 'mw-editfont-monospace' ).addClass( 'mw-editfont-' + mw.user.options.get( 'editfont' ) );
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surfaceView.$documentNode.removeClass(
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've-ce-documentNode-codeEditor-webkit-hide ve-ce-documentNode-codeEditor-hide'
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);
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mirrorElement = surface.mirror.getWrapperElement();
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mirrorElement.parentNode.removeChild( mirrorElement );
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}
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surface.mirror = null;
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}
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return true;
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};
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/**
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* Handle select events from the surface model
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*
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* @param {ve.dm.Selection} selection
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*/
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ve.ui.CodeMirrorAction.prototype.onSelect = function ( selection ) {
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var fromPos, toPos,
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range = selection.getCoveringRange(),
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dmDoc = this.surface.getModel().getDocument();
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if ( !range ) {
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return;
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}
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/**
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* Convert a DM offset to a CM position (line + ch)
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*
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* @param {number} offset VE DM offset
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* @return {Object} CM position
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* @throws {Error} Offset out of bounds
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*/
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function getPosFromOffset( offset ) {
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var lineLength,
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lineOffset = 0,
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line = 0,
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lines = dmDoc.getDocumentNode().getChildren();
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if ( offset < 0 ) {
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throw new Error( 'Offset out of bounds' );
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}
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while ( lineOffset < offset ) {
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if ( !lines[ line ] || lines[ line ].isInternal() ) {
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throw new Error( 'Offset out of bounds' );
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}
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lineLength = lines[ line ].getOuterLength();
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if ( lineOffset + lineLength > offset ) {
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return {
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line: line,
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ch: offset - lineOffset - 1
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};
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}
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lineOffset += lineLength;
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line++;
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}
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throw new Error( 'Offset out of bounds' );
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}
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fromPos = getPosFromOffset( range.from );
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// Don't do the calculation twice when the range is collapsed
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toPos = range.isCollapsed() ? fromPos : getPosFromOffset( range.to );
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this.surface.mirror.setSelection( fromPos, toPos );
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};
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/**
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* Handle langChange events from the document view
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*/
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ve.ui.CodeMirrorAction.prototype.onLangChange = function () {
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var surface = this.surface,
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dir = surface.getView().getDocument().getDir();
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surface.mirror.setOption( 'direction', dir );
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};
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/**
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* Handle precommit events from the document.
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*
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* The document is still in it's 'old' state before the transaction
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* has been applied at this point.
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*
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* @param {ve.dm.Transaction} tx
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*/
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ve.ui.CodeMirrorAction.prototype.onDocumentPrecommit = function ( tx ) {
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var i,
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offset = 0,
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replacements = [],
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linearData = this.surface.getModel().getDocument().data,
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store = linearData.getStore(),
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mirror = this.surface.mirror;
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/**
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* Convert a VE offset to a 2D CodeMirror position
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*
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* @private
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* @param {number} veOffset VE linear model offset
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* @return {Object} Code mirror position, containing 'line' and 'ch'
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*/
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function convertOffset( veOffset ) {
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var cmOffset = linearData.getSourceText( new ve.Range( 0, veOffset ) ).length;
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return mirror.posFromIndex( cmOffset );
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}
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tx.operations.forEach( function ( op ) {
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if ( op.type === 'retain' ) {
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offset += op.length;
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} else if ( op.type === 'replace' ) {
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replacements.push( {
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start: convertOffset( offset ),
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// Don't bother recalculating end offset if not a removal, replaceRange works with just one arg
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end: op.remove.length ? convertOffset( offset + op.remove.length ) : undefined,
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data: new ve.dm.ElementLinearData( store, op.insert ).getSourceText()
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} );
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offset += op.remove.length;
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}
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} );
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// Apply replacements in reverse to avoid having to shift offsets
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for ( i = replacements.length - 1; i >= 0; i-- ) {
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mirror.replaceRange(
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replacements[ i ].data,
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replacements[ i ].start,
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replacements[ i ].end
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);
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}
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// HACK: The absolutely positioned CodeMirror doesn't calculate the viewport
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// correctly when expanding from less than the viewport height. (T185184)
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if ( mirror.display.sizer.style.minHeight !== this.lastHeight ) {
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mirror.refresh();
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}
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this.lastHeight = mirror.display.sizer.style.minHeight;
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};
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/* Registration */
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ve.ui.actionFactory.register( ve.ui.CodeMirrorAction );
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