mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-25 23:05:35 +00:00
1279 lines
34 KiB
JavaScript
1279 lines
34 KiB
JavaScript
/*global rangy */
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/**
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* VisualEditor content editable Surface class.
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*
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* @copyright 2011-2012 VisualEditor Team and others; see AUTHORS.txt
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* @license The MIT License (MIT); see LICENSE.txt
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*/
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/**
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* ContentEditable surface.
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*
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* @class
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* @constructor
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* @extends {ve.EventEmitter}
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* @param {jQuery} $container
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* @param {ve.dm.Surface} model Model to observe
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* @param {ve.Surface} surface The surface of this view
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*/
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ve.ce.Surface = function VeCeSurface( $container, model, surface ) {
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// Parent constructor
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ve.EventEmitter.call( this );
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// Properties
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this.surface = surface;
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this.inIme = false;
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this.model = model;
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this.documentView = new ve.ce.Document( model.getDocument(), this );
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this.surfaceObserver = new ve.ce.SurfaceObserver( this.documentView );
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this.selectionTimeout = null;
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this.$ = $container;
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this.$document = $( document );
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this.clipboard = {};
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this.renderingEnabled = true;
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this.dragging = false;
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this.selecting = false;
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this.$phantoms = $( '<div class="ve-ce-phantoms">' );
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// Events
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this.surfaceObserver.addListenerMethods(
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this, { 'contentChange': 'onContentChange', 'selectionChange': 'onSelectionChange' }
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);
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this.model.addListenerMethods(
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this, { 'change': 'onChange', 'lock': 'onLock', 'unlock': 'onUnlock' }
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);
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this.documentView.getDocumentNode().$.on( {
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'focus': ve.bind( this.documentOnFocus, this ),
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'blur': ve.bind( this.documentOnBlur, this )
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} );
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this.$.on( {
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'cut': ve.bind( this.onCut, this ),
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'copy': ve.bind( this.onCopy, this ),
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'paste': ve.bind( this.onPaste, this ),
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'dragover drop': function ( e ) {
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// Prevent content drag & drop
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e.preventDefault();
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return false;
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}
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} );
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if ( $.browser.msie ) {
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this.$.on( 'beforepaste', ve.bind( this.onPaste, this ) );
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}
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// Initialization
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rangy.init();
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ve.ce.Surface.clearLocalStorage();
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this.$.append( this.documentView.getDocumentNode().$ );
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this.$.append( this.$phantoms );
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};
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/* Inheritance */
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ve.inheritClass( ve.ce.Surface, ve.EventEmitter );
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/* Static Members */
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ve.ce.Surface.static = {};
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ve.ce.Surface.static.$phantomTemplate = $( '<div class="ve-ce-phantom" draggable="false"></div>' )
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.attr( 'title', ve.msg ( 'visualeditor-aliennode-tooltip' ) );
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/* Methods */
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/**
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* Destroy the surface, removing all DOM elements.
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*
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* @method
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* @returns {ve.ui.Context} Context user interface
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*/
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ve.ce.Surface.prototype.destroy = function () {
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this.$.remove();
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};
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ve.ce.Surface.prototype.handleInsertion = function () {
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var slug, data, range, annotations, insertionAnnotations, placeholder,
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selection = this.model.getSelection();
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// Handles removing expanded selection before inserting new text
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if ( !selection.isCollapsed() ) {
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// Pull annotations from the first character in the selection
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annotations = this.model.documentModel.getAnnotationsFromRange(
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new ve.Range( selection.start, selection.start + 1 )
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);
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this.model.change(
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ve.dm.Transaction.newFromRemoval( this.documentView.model, selection ),
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new ve.Range( selection.start )
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);
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this.surfaceObserver.clear();
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selection = this.model.getSelection();
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this.model.setInsertionAnnotations( annotations );
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}
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insertionAnnotations = this.model.getInsertionAnnotations() || new ve.AnnotationSet();
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if ( selection.isCollapsed() ) {
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slug = this.documentView.getSlugAtOffset( selection.start );
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// Is this a slug or are the annotations to the left different than the insertion
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// annotations?
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if (
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slug || (
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selection.start > 0 &&
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!ve.compareObjects (
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this.model.getDocument().getAnnotationsFromOffset( selection.start - 1 ),
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insertionAnnotations
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)
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)
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) {
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placeholder = '\u2659';
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if ( !insertionAnnotations.isEmpty() ) {
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placeholder = [placeholder, insertionAnnotations];
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}
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// is this a slug and if so, is this a block slug?
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if ( slug && ve.dm.Document.isStructuralOffset(
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this.documentView.model.data, selection.start
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) ) {
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range = new ve.Range( selection.start + 1, selection.start + 2 );
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data = [{ 'type' : 'paragraph' }, placeholder, { 'type' : '/paragraph' }];
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} else {
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range = new ve.Range( selection.start, selection.start + 1 );
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data = [placeholder];
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}
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this.model.change(
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ve.dm.Transaction.newFromInsertion(
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this.documentView.model, selection.start, data
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),
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range
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);
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this.surfaceObserver.clear();
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}
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}
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this.surfaceObserver.stop( true );
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};
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/**
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* Responds to 'contentChange' events emitted in {ve.ce.SurfaceObserver.prototype.poll}.
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*
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* @method
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* @param {HTMLElement} node DOM node the change occured in
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* @param {Object} previous Old data
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* @param {Object} previous.text Old plain text content
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* @param {Object} previous.hash Old DOM hash
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* @param {Object} previous.range Old selection
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* @param {Object} next New data
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* @param {Object} next.text New plain text content
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* @param {Object} next.hash New DOM hash
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* @param {Object} next.range New selection
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*/
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ve.ce.Surface.prototype.onContentChange = function ( node, previous, next ) {
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var data, range, len, annotations, offsetDiff, lengthDiff, sameLeadingAndTrailing,
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previousStart, nextStart, newRange,
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fromLeft = 0,
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fromRight = 0,
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nodeOffset = node.getModel().getOffset();
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if ( previous.range && next.range ) {
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offsetDiff = ( previous.range.isCollapsed() && next.range.isCollapsed() ) ?
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next.range.start - previous.range.start : null;
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lengthDiff = next.text.length - previous.text.length;
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previousStart = previous.range.start - nodeOffset - 1;
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nextStart = next.range.start - nodeOffset - 1;
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sameLeadingAndTrailing = offsetDiff !== null && (
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// TODO: rewrite to static method with tests
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(
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lengthDiff > 0 &&
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previous.text.substring( 0, previousStart ) ===
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next.text.substring( 0, previousStart ) &&
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previous.text.substring( previousStart ) ===
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next.text.substring( nextStart )
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) ||
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(
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lengthDiff < 0 &&
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previous.text.substring( 0, nextStart ) ===
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next.text.substring( 0, nextStart ) &&
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previous.text.substring( previousStart - lengthDiff + offsetDiff) ===
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next.text.substring( nextStart )
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)
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);
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// Simple insertion
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if ( lengthDiff > 0 && offsetDiff === lengthDiff /* && sameLeadingAndTrailing */) {
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data = next.text.substring(
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previous.range.start - nodeOffset - 1,
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next.range.start - nodeOffset - 1
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).split( '' );
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// Apply insertion annotations
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annotations = this.model.getInsertionAnnotations();
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if ( annotations instanceof ve.AnnotationSet ) {
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ve.dm.Document.addAnnotationsToData( data, this.model.getInsertionAnnotations() );
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}
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this.disableRendering();
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this.model.change(
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ve.dm.Transaction.newFromInsertion(
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this.documentView.model, previous.range.start, data
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),
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next.range
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);
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this.enableRendering();
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return;
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}
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// Simple deletion
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if ( ( offsetDiff === 0 || offsetDiff === lengthDiff ) && sameLeadingAndTrailing ) {
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if ( offsetDiff === 0 ) {
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range = new ve.Range( next.range.start, next.range.start - lengthDiff );
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} else {
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range = new ve.Range( next.range.start, previous.range.start );
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}
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this.disableRendering();
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this.model.change(
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ve.dm.Transaction.newFromRemoval( this.documentView.model, range ),
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next.range
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);
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this.enableRendering();
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return;
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}
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}
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// Complex change
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len = Math.min( previous.text.length, next.text.length );
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// Count same characters from left
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while ( fromLeft < len && previous.text[fromLeft] === next.text[fromLeft] ) {
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++fromLeft;
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}
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// Count same characters from right
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while (
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fromRight < len - fromLeft &&
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previous.text[previous.text.length - 1 - fromRight] ===
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next.text[next.text.length - 1 - fromRight]
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) {
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++fromRight;
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}
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data = next.text.substring( fromLeft, next.text.length - fromRight ).split( '' );
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// Get annotations to the left of new content and apply
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annotations =
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this.model.getDocument().getAnnotationsFromOffset( nodeOffset + 1 + fromLeft );
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if ( annotations.getLength() ) {
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ve.dm.Document.addAnnotationsToData( data, annotations );
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}
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newRange = next.range;
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if ( newRange.isCollapsed() ) {
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newRange = new ve.Range( this.getNearestCorrectOffset( newRange.start, 1 ) );
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}
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if ( data.length > 0 ) {
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this.model.change(
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ve.dm.Transaction.newFromInsertion(
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this.documentView.model, nodeOffset + 1 + fromLeft, data
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),
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newRange
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);
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}
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if ( fromLeft + fromRight < previous.text.length ) {
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this.model.change(
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ve.dm.Transaction.newFromRemoval(
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this.documentView.model,
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new ve.Range(
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data.length + nodeOffset + 1 + fromLeft,
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data.length + nodeOffset + 1 + previous.text.length - fromRight
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)
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),
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newRange
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);
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}
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};
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/**
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* Responds to 'selectionChange' events emitted in {ve.ce.SurfaceObserver.prototype.poll}.
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*
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* @method
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*/
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ve.ce.Surface.prototype.onSelectionChange = function ( oldRange, newRange ) {
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this.disableRendering();
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this.model.change( null, newRange );
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this.enableRendering();
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};
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/**
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* Responds to surface lock events.
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*
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* @method
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*/
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ve.ce.Surface.prototype.onLock = function () {
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this.surfaceObserver.stop();
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};
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/**
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* Responds to surface lock events.
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*
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* @method
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*/
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ve.ce.Surface.prototype.onUnlock = function () {
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this.surfaceObserver.clear( this.model.getSelection() );
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this.surfaceObserver.start();
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};
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/**
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* Responds to document focus events.
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*
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* @method
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* @param {jQuery.Event} e
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*/
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ve.ce.Surface.prototype.documentOnFocus = function () {
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this.$document.off( '.ve-ce-Surface' );
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this.$document.on( {
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'keydown.ve-ce-Surface': ve.bind( this.onKeyDown, this ),
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'keyup.ve-ce-Surface': ve.bind( this.onKeyUp, this ),
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'keypress.ve-ce-Surface': ve.bind( this.onKeyPress, this ),
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'mousedown.ve-ce-Surface': ve.bind( this.onMouseDown, this ),
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'mouseup.ve-ce-Surface': ve.bind( this.onMouseUp, this ),
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'mousemove.ve-ce-Surface': ve.bind( this.onMouseMove, this ),
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'compositionstart.ve-ce-Surface': ve.bind( this.onCompositionStart, this ),
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'compositionend.ve-ce-Surface': ve.bind( this.onCompositionEnd, this ),
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} );
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this.surfaceObserver.start( true );
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};
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ve.ce.Surface.prototype.onCompositionStart = function () {
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if ( $.browser.msie === true ) {
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return;
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}
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this.inIme = true;
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this.handleInsertion();
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};
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ve.ce.Surface.prototype.onCompositionEnd = function () {
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this.inIme = false;
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this.surfaceObserver.start();
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};
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/**
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* Responds to document blur events.
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*
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* @method
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* @param {jQuery.Event} e
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*/
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ve.ce.Surface.prototype.documentOnBlur = function () {
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this.$document.off( '.ve-ce-Surface' );
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this.surfaceObserver.stop( true );
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};
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/**
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* Responds to document mouse down events.
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*
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* @method
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* @param {jQuery.Event} e
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*/
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ve.ce.Surface.prototype.onMouseDown = function ( e ) {
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// Remember the mouse is down
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this.dragging = true;
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// Old code to figure out if user clicked inside the document or not - leave it here for now
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// $( e.target ).closest( '.ve-ce-documentNode' ).length === 0
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if ( e.which === 1 ) {
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this.surfaceObserver.stop( true );
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}
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// Block / prevent triple click
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if ( e.originalEvent.detail > 2 ) {
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e.preventDefault();
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}
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};
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/**
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* Responds to document mouse up events.
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*
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* @method
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* @param {jQuery.Event} e
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*/
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ve.ce.Surface.prototype.onMouseUp = function ( e ) {
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this.surfaceObserver.start();
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if ( !e.shiftKey && this.selecting ) {
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this.emit( 'selectionEnd' );
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this.selecting = false;
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}
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this.dragging = false;
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};
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/**
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* Responds to document mouse move events.
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*
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* @method
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* @param {jQuery.Event} e
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*/
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ve.ce.Surface.prototype.onMouseMove = function () {
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// Detect beginning of selection by moving mouse while dragging
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if ( this.dragging && !this.selecting ) {
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this.selecting = true;
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this.emit( 'selectionStart' );
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}
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};
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/**
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* Responds to document key up events.
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*
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* @method
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* @param {jQuery.Event} e
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*/
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ve.ce.Surface.prototype.onKeyUp = function ( e ) {
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// Detect end of selecting by letting go of shift
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if ( !this.dragging && this.selecting && e.keyCode === 16 ) {
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this.selecting = false;
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this.emit( 'selectionEnd' );
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}
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};
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/**
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* Responds to document key down events.
|
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*
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* @method
|
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* @param {jQuery.Event} e
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||
*/
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ve.ce.Surface.prototype.onKeyDown = function ( e ) {
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if ( this.inIme === true ) {
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return;
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}
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if ( e.which === 229 && $.browser.msie === true ) {
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this.inIme = true;
|
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this.handleInsertion();
|
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return;
|
||
}
|
||
|
||
// Detect start of selecting using shift+arrow keys
|
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if ( !this.dragging && !this.selecting && e.shiftKey && e.keyCode >= 37 && e.keyCode <= 40 ) {
|
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this.selecting = true;
|
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this.emit( 'selectionStart' );
|
||
}
|
||
|
||
switch ( e.keyCode ) {
|
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// Left arrow
|
||
case 37:
|
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if ( this.adjustCursor( -1 ) ) {
|
||
e.preventDefault();
|
||
}
|
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break;
|
||
// Right arrow
|
||
case 39:
|
||
if ( this.adjustCursor( 1 ) ) {
|
||
e.preventDefault();
|
||
}
|
||
break;
|
||
// Enter
|
||
case 13:
|
||
e.preventDefault();
|
||
this.handleEnter( e );
|
||
break;
|
||
// Backspace
|
||
case 8:
|
||
this.handleDelete( e, true );
|
||
this.surfaceObserver.stop( true );
|
||
this.surfaceObserver.start();
|
||
break;
|
||
// Delete
|
||
case 46:
|
||
this.handleDelete( e, false );
|
||
this.surfaceObserver.stop( true );
|
||
this.surfaceObserver.start();
|
||
break;
|
||
default:
|
||
// Execute key command if available
|
||
this.surfaceObserver.stop( true );
|
||
if ( this.surface.execute( new ve.Command( e ) ) ) {
|
||
e.preventDefault();
|
||
}
|
||
this.surfaceObserver.start();
|
||
}
|
||
};
|
||
|
||
/**
|
||
* Responds to copy events.
|
||
*
|
||
* @method
|
||
* @param {jQuery.Event} e
|
||
*/
|
||
ve.ce.Surface.prototype.onCopy = function () {
|
||
var sel = rangy.getSelection(),
|
||
$frag = $( sel.getRangeAt(0).cloneContents() ),
|
||
slice = this.documentView.model.getSlice( this.model.getSelection() ),
|
||
key = '';
|
||
|
||
// Create key from text and element names
|
||
$frag.contents().each( function () {
|
||
key += this.textContent || this.nodeName;
|
||
} );
|
||
key = 've-' + key.replace( /\s/gm, '' );
|
||
|
||
// Set clipboard and localStorage
|
||
this.clipboard[key] = slice;
|
||
try {
|
||
localStorage.setItem(
|
||
key,
|
||
JSON.stringify( {
|
||
'time': new Date().getTime(),
|
||
'data': slice
|
||
} )
|
||
);
|
||
} catch ( e ) {
|
||
// Silently ignore
|
||
}
|
||
};
|
||
|
||
/**
|
||
* Responds to cut events.
|
||
*
|
||
* @method
|
||
* @param {jQuery.Event} e
|
||
*/
|
||
ve.ce.Surface.prototype.onCut = function ( e ) {
|
||
var surface = this;
|
||
|
||
this.surfaceObserver.stop();
|
||
|
||
this.onCopy( e );
|
||
|
||
setTimeout( function () {
|
||
var selection,
|
||
tx;
|
||
|
||
// We don't like how browsers cut, so let's undo it and do it ourselves.
|
||
document.execCommand( 'undo', false, false );
|
||
|
||
selection = surface.model.getSelection();
|
||
|
||
// Transact
|
||
tx = ve.dm.Transaction.newFromRemoval( surface.documentView.model, selection );
|
||
surface.model.change( tx, new ve.Range( selection.start ) );
|
||
|
||
surface.surfaceObserver.clear();
|
||
surface.surfaceObserver.start();
|
||
}, 1 );
|
||
};
|
||
|
||
/**
|
||
* Responds to paste events.
|
||
*
|
||
* @method
|
||
* @param {jQuery.Event} e
|
||
*/
|
||
ve.ce.Surface.prototype.onPaste = function () {
|
||
var tx,
|
||
view = this,
|
||
selection = this.model.getSelection();
|
||
|
||
this.surfaceObserver.stop();
|
||
|
||
// Pasting into a range? Remove first.
|
||
if ( !rangy.getSelection().isCollapsed ) {
|
||
tx = ve.dm.Transaction.newFromRemoval( view.documentView.model, selection );
|
||
view.model.change( tx );
|
||
}
|
||
|
||
$( '#paste' ).html( '' ).show().focus();
|
||
|
||
setTimeout( function () {
|
||
var pasteText, pasteData, tx,
|
||
key = '';
|
||
|
||
// Create key from text and element names
|
||
$( '#paste' ).hide().contents().each( function () {
|
||
key += this.textContent || this.nodeName;
|
||
} );
|
||
key = 've-' + key.replace( /\s/gm, '' );
|
||
|
||
// Get linear model from clipboard, localStorage, or create array from unknown pasted content
|
||
if ( view.clipboard[key] ) {
|
||
pasteData = view.clipboard[key];
|
||
}
|
||
/*
|
||
else if ( localStorage.getItem( key ) ) {
|
||
pasteData = localStorage.getItem( key ).data;
|
||
}
|
||
*/
|
||
else {
|
||
pasteText = $('#paste').text().replace( /\n/gm, '');
|
||
pasteData = new ve.dm.DocumentSlice( pasteText.split( '' ) );
|
||
}
|
||
|
||
// Transact
|
||
try {
|
||
tx = ve.dm.Transaction.newFromInsertion(
|
||
view.documentView.model,
|
||
selection.start,
|
||
pasteData.getData()
|
||
);
|
||
} catch ( e ) {
|
||
tx = ve.dm.Transaction.newFromInsertion(
|
||
view.documentView.model,
|
||
selection.start,
|
||
pasteData.getBalancedData()
|
||
);
|
||
}
|
||
view.documentView.documentNode.$.focus();
|
||
view.model.change( tx, new ve.Range( selection.start + pasteData.length ) );
|
||
}, 0 );
|
||
};
|
||
|
||
/**
|
||
* Responds to document key press events.
|
||
*
|
||
* @method
|
||
* @param {jQuery.Event} e
|
||
*/
|
||
ve.ce.Surface.prototype.onKeyPress = function ( e ) {
|
||
if ( ve.ce.Surface.isShortcutKey( e ) || e.which === 13 || e.which === 8 || e.which === 0 ) {
|
||
return;
|
||
}
|
||
this.handleInsertion();
|
||
setTimeout( ve.bind( function () {
|
||
this.surfaceObserver.start();
|
||
}, this ), 0 );
|
||
};
|
||
|
||
/**
|
||
* Called from ve.dm.Surface.prototype.change.
|
||
*
|
||
* @method
|
||
* @param {ve.dm.Transaction|null} transaction
|
||
* @param {ve.Range|undefined} selection
|
||
*/
|
||
ve.ce.Surface.prototype.onChange = function ( transaction, selection ) {
|
||
if ( selection && this.isRenderingEnabled() ) {
|
||
this.showSelection( selection );
|
||
}
|
||
};
|
||
|
||
/**
|
||
* Responds to enter key events.
|
||
*
|
||
* @method
|
||
* @param {jQuery.Event} e
|
||
*/
|
||
ve.ce.Surface.prototype.handleEnter = function ( e ) {
|
||
var tx, outerParent, outerChildrenCount, list,
|
||
selection = this.model.getSelection(),
|
||
documentModel = this.model.getDocument(),
|
||
emptyParagraph = [{ 'type': 'paragraph' }, { 'type': '/paragraph' }],
|
||
advanceCursor = true,
|
||
node = this.documentView.getNodeFromOffset( selection.from ),
|
||
nodeModel = node.getModel(),
|
||
cursor = selection.from,
|
||
contentBranchModel = nodeModel.isContent() ? nodeModel.getParent() : nodeModel,
|
||
contentBranchModelRange = contentBranchModel.getRange(),
|
||
stack = [],
|
||
outermostNode = null;
|
||
|
||
// Stop polling while we work
|
||
this.surfaceObserver.stop();
|
||
|
||
// Handle removal first
|
||
if ( selection.from !== selection.to ) {
|
||
tx = ve.dm.Transaction.newFromRemoval( documentModel, selection );
|
||
selection = tx.translateRange( selection );
|
||
this.model.change( tx, selection );
|
||
}
|
||
|
||
// Handle insertion
|
||
if (
|
||
contentBranchModel.getType() !== 'paragraph' &&
|
||
(
|
||
cursor === contentBranchModelRange.from ||
|
||
cursor === contentBranchModelRange.to
|
||
)
|
||
) {
|
||
// If we're at the start/end of something that's not a paragraph, insert a paragraph
|
||
// before/after
|
||
if ( cursor === contentBranchModelRange.from ) {
|
||
tx = ve.dm.Transaction.newFromInsertion(
|
||
documentModel, contentBranchModel.getOuterRange().from, emptyParagraph
|
||
);
|
||
} else if ( cursor === contentBranchModelRange.to ) {
|
||
tx = ve.dm.Transaction.newFromInsertion(
|
||
documentModel, contentBranchModel.getOuterRange().to, emptyParagraph
|
||
);
|
||
}
|
||
} else {
|
||
// Split
|
||
ve.Node.traverseUpstream( node, function ( node ) {
|
||
if ( !node.canBeSplit() ) {
|
||
return false;
|
||
}
|
||
stack.splice(
|
||
stack.length / 2,
|
||
0,
|
||
{ 'type': '/' + node.type },
|
||
node.model.getClonedElement()
|
||
);
|
||
outermostNode = node;
|
||
if ( e.shiftKey ) {
|
||
return false;
|
||
} else {
|
||
return true;
|
||
}
|
||
} );
|
||
|
||
outerParent = outermostNode.getModel().getParent();
|
||
outerChildrenCount = outerParent.getChildren().length;
|
||
|
||
if (
|
||
// This is a list item
|
||
outermostNode.type === 'listItem' &&
|
||
// This is the last list item
|
||
outerParent.getChildren()[outerChildrenCount - 1] === outermostNode.getModel() &&
|
||
// There is one child
|
||
outermostNode.children.length === 1 &&
|
||
// The child is empty
|
||
node.model.length === 0
|
||
) {
|
||
// Enter was pressed in an empty list item.
|
||
list = outermostNode.getModel().getParent();
|
||
// Remove the list item
|
||
tx = ve.dm.Transaction.newFromRemoval(
|
||
documentModel, outermostNode.getModel().getOuterRange()
|
||
);
|
||
this.model.change( tx );
|
||
// Insert a paragraph
|
||
tx = ve.dm.Transaction.newFromInsertion(
|
||
documentModel, list.getOuterRange().to, emptyParagraph
|
||
);
|
||
advanceCursor = false;
|
||
} else {
|
||
// We must process the transaction first because getRelativeContentOffset can't help us
|
||
// yet
|
||
tx = ve.dm.Transaction.newFromInsertion( documentModel, selection.from, stack );
|
||
}
|
||
}
|
||
|
||
// Commit the transaction
|
||
this.model.change( tx );
|
||
|
||
// Now we can move the cursor forward
|
||
if ( advanceCursor ) {
|
||
this.model.change(
|
||
null, new ve.Range( documentModel.getRelativeContentOffset( selection.from, 1 ) )
|
||
);
|
||
} else {
|
||
this.model.change(
|
||
null, new ve.Range( documentModel.getNearestContentOffset( selection.from ) )
|
||
);
|
||
}
|
||
// Reset and resume polling
|
||
this.surfaceObserver.clear();
|
||
this.surfaceObserver.start();
|
||
};
|
||
|
||
/**
|
||
* Adjusts the cursor position in a given distance.
|
||
*
|
||
* This method only affects the selection target, preserving selections that are not collapsed and
|
||
* the direction of the selection.
|
||
*
|
||
* @method
|
||
* @param {Number} adjustment Distance to adjust the cursor, can be positive or negative
|
||
* @returns {Boolean} Cursor was moved
|
||
*/
|
||
ve.ce.Surface.prototype.adjustCursor = function ( adjustment ) {
|
||
// Bypass for zero-adjustment
|
||
if ( !adjustment ) {
|
||
return false;
|
||
}
|
||
var adjustedTargetOffset,
|
||
bias = adjustment > 0 ? 1 : -1,
|
||
selection = this.model.getSelection(),
|
||
targetOffset = selection.to,
|
||
documentModel = this.model.getDocument(),
|
||
relativeContentOffset = documentModel.getRelativeContentOffset( targetOffset, adjustment ),
|
||
relativeStructuralOffset = documentModel.getRelativeStructuralOffset(
|
||
targetOffset + bias, adjustment, true
|
||
);
|
||
// Check if we've moved into a slug
|
||
if ( this.hasSlugAtOffset( relativeStructuralOffset ) ) {
|
||
// Check if the relative content offset is in the opposite direction we are trying to go
|
||
if ( ( relativeContentOffset - targetOffset < 0 ? -1 : 1 ) !== bias ) {
|
||
// There's nothing past the slug we are already in, stay in it
|
||
adjustedTargetOffset = relativeStructuralOffset;
|
||
} else {
|
||
// There's a slug neaby, go into it if it's closer
|
||
adjustedTargetOffset = adjustment < 0 ?
|
||
Math.max( relativeContentOffset, relativeStructuralOffset ) :
|
||
Math.min( relativeContentOffset, relativeStructuralOffset );
|
||
}
|
||
}
|
||
// Check if we've moved a different distance than we asked for
|
||
else if ( relativeContentOffset !== targetOffset + adjustment ) {
|
||
// We can't trust the browser, move programatically
|
||
adjustedTargetOffset = relativeContentOffset;
|
||
}
|
||
// If the target changed, update the model
|
||
if ( adjustedTargetOffset ) {
|
||
this.model.change(
|
||
null,
|
||
new ve.Range(
|
||
selection.isCollapsed() ?
|
||
adjustedTargetOffset : selection.from, adjustedTargetOffset
|
||
)
|
||
);
|
||
return true;
|
||
}
|
||
return false;
|
||
};
|
||
|
||
/**
|
||
* Responds to backspace and delete key events.
|
||
*
|
||
* @method
|
||
* @param {Boolean} Key was a backspace
|
||
*/
|
||
ve.ce.Surface.prototype.handleDelete = function ( e, backspace ) {
|
||
var sourceOffset,
|
||
targetOffset,
|
||
sourceSplitableNode,
|
||
targetSplitableNode,
|
||
tx,
|
||
cursorAt,
|
||
sourceNode,
|
||
targetNode,
|
||
sourceData,
|
||
nodeToDelete,
|
||
adjacentData,
|
||
adjacentText,
|
||
adjacentTextAfterMatch,
|
||
endOffset,
|
||
i,
|
||
selection = this.model.getSelection(),
|
||
containsInlineElements = false;
|
||
|
||
if ( selection.from === selection.to ) {
|
||
// Set source and target linmod offsets
|
||
if ( backspace ) {
|
||
sourceOffset = selection.to;
|
||
targetOffset = this.getNearestCorrectOffset( sourceOffset - 1, -1 );
|
||
|
||
// At the beginning of the document - don't do anything and preventDefault
|
||
if ( sourceOffset === targetOffset ) {
|
||
e.preventDefault();
|
||
return;
|
||
}
|
||
|
||
} else {
|
||
sourceOffset = this.model.getDocument().getRelativeContentOffset( selection.to, 1 );
|
||
targetOffset = selection.to;
|
||
|
||
// At the end of the document - don't do anything and preventDefault
|
||
if ( sourceOffset <= targetOffset ) {
|
||
e.preventDefault();
|
||
return;
|
||
}
|
||
}
|
||
|
||
// Set source and target nodes
|
||
sourceNode = this.documentView.getNodeFromOffset( sourceOffset, false ),
|
||
targetNode = this.documentView.getNodeFromOffset( targetOffset, false );
|
||
|
||
if ( sourceNode.type === targetNode.type ) {
|
||
sourceSplitableNode = ve.ce.Node.getSplitableNode( sourceNode );
|
||
targetSplitableNode = ve.ce.Node.getSplitableNode( targetNode );
|
||
}
|
||
//ve.log(sourceSplitableNode, targetSplitableNode);
|
||
|
||
// Save target location of cursor
|
||
cursorAt = targetOffset;
|
||
|
||
// Get text from cursor location to end of node in the proper direction
|
||
adjacentData = null;
|
||
adjacentText = '';
|
||
|
||
if ( backspace ) {
|
||
adjacentData = sourceNode.model.doc.data.slice(
|
||
sourceNode.model.getOffset() + ( sourceNode.model.isWrapped() ? 1 : 0 ) ,
|
||
sourceOffset
|
||
);
|
||
} else {
|
||
endOffset = targetNode.model.getOffset() +
|
||
targetNode.model.getLength() +
|
||
( targetNode.model.isWrapped() ? 1 : 0 );
|
||
adjacentData = targetNode.model.doc.data.slice( targetOffset, endOffset );
|
||
}
|
||
|
||
for ( i = 0; i < adjacentData.length; i++ ) {
|
||
if ( adjacentData[i].type !== undefined ) {
|
||
containsInlineElements = true;
|
||
break;
|
||
}
|
||
adjacentText += adjacentData[i][0];
|
||
}
|
||
|
||
if ( !containsInlineElements ) {
|
||
adjacentTextAfterMatch = adjacentText.match(
|
||
/[a-zA-Z\-_’'‘ÆÐƎƏƐƔIJŊŒẞÞǷȜæðǝəɛɣijŋœĸſßþƿȝĄƁÇĐƊĘĦĮƘŁØƠŞȘŢȚŦŲƯY̨Ƴąɓçđɗęħįƙłøơşșţțŧųưy̨ƴÁÀÂÄǍĂĀÃÅǺĄÆǼǢƁĆĊĈČÇĎḌĐƊÐÉÈĖÊËĚĔĒĘẸƎƏƐĠĜǦĞĢƔáàâäǎăāãåǻąæǽǣɓćċĉčçďḍđɗðéèėêëěĕēęẹǝəɛġĝǧğģɣĤḤĦIÍÌİÎÏǏĬĪĨĮỊIJĴĶƘĹĻŁĽĿʼNŃN̈ŇÑŅŊÓÒÔÖǑŎŌÕŐỌØǾƠŒĥḥħıíìiîïǐĭīĩįịijĵķƙĸĺļłľŀʼnńn̈ňñņŋóòôöǒŏōõőọøǿơœŔŘŖŚŜŠŞȘṢẞŤŢṬŦÞÚÙÛÜǓŬŪŨŰŮŲỤƯẂẀŴẄǷÝỲŶŸȲỸƳŹŻŽẒŕřŗſśŝšşșṣßťţṭŧþúùûüǔŭūũűůųụưẃẁŵẅƿýỳŷÿȳỹƴźżžẓ]/g
|
||
);
|
||
// If there are "normal" characters in the adjacent text, let the browser handle natively.
|
||
if ( adjacentTextAfterMatch !== null && adjacentTextAfterMatch.length ) {
|
||
return;
|
||
}
|
||
}
|
||
|
||
ve.log('handleDelete programatically');
|
||
e.preventDefault();
|
||
this.surfaceObserver.stop();
|
||
|
||
if (
|
||
// Source and target are the same node
|
||
sourceNode === targetNode ||
|
||
(
|
||
// Source and target have the same parent (list items)
|
||
sourceSplitableNode !== undefined &&
|
||
sourceSplitableNode.getParent() === targetSplitableNode.getParent()
|
||
)
|
||
) {
|
||
// Simple removal
|
||
tx = ve.dm.Transaction.newFromRemoval(
|
||
this.documentView.model, new ve.Range( targetOffset, sourceOffset )
|
||
);
|
||
this.model.change( tx, new ve.Range( cursorAt ) );
|
||
} else if ( sourceNode.getType() === 'document' ) {
|
||
// Source is a slug - move the cursor somewhere useful
|
||
this.model.change( null, new ve.Range( cursorAt ) );
|
||
} else {
|
||
// Source and target are different nodes or do not share a parent, perform tricky merge
|
||
// Get the data for the source node
|
||
sourceData = this.documentView.model.getData( sourceNode.model.getRange() );
|
||
|
||
// Find the node that should be completely removed
|
||
nodeToDelete = sourceNode;
|
||
ve.Node.traverseUpstream( nodeToDelete, function ( node ) {
|
||
if ( node.getParent().children.length === 1 ) {
|
||
nodeToDelete = node.getParent();
|
||
return true;
|
||
} else {
|
||
return false;
|
||
}
|
||
} );
|
||
|
||
this.model.change(
|
||
[
|
||
// Remove source node or source node ancestor
|
||
ve.dm.Transaction.newFromRemoval(
|
||
this.documentView.model, nodeToDelete.getModel().getOuterRange()
|
||
),
|
||
// Append source data to target
|
||
ve.dm.Transaction.newFromInsertion(
|
||
this.documentView.model, targetOffset, sourceData
|
||
)
|
||
],
|
||
new ve.Range( cursorAt )
|
||
);
|
||
}
|
||
} else {
|
||
// Selection removal
|
||
ve.log('selection removal - handle programatically');
|
||
e.preventDefault();
|
||
this.model.change(
|
||
ve.dm.Transaction.newFromRemoval( this.documentView.model, selection ),
|
||
new ve.Range( selection.start )
|
||
);
|
||
}
|
||
|
||
this.surfaceObserver.clear();
|
||
this.surfaceObserver.start();
|
||
};
|
||
|
||
/**
|
||
* Shows the cursor at a given offset.
|
||
*
|
||
* @method
|
||
* @param {Number} offset Offset to show cursor at
|
||
*/
|
||
ve.ce.Surface.prototype.showCursor = function ( offset ) {
|
||
this.showSelection( new ve.Range( offset ) );
|
||
};
|
||
|
||
/**
|
||
* Shows selection on a given range.
|
||
*
|
||
* @method
|
||
* @param {ve.Range} range Range to show selection on
|
||
*/
|
||
ve.ce.Surface.prototype.showSelection = function ( range ) {
|
||
var start, end,
|
||
rangySel = rangy.getSelection(),
|
||
rangyRange = rangy.createRange();
|
||
|
||
// Ensure the range we are asking to select is from and to correct offsets - failure to do so
|
||
// may cause getNodeAndOffset to throw an exception
|
||
range = new ve.Range(
|
||
this.getNearestCorrectOffset( range.start ),
|
||
this.getNearestCorrectOffset( range.end )
|
||
);
|
||
|
||
if ( range.start !== range.end ) {
|
||
start = this.getNodeAndOffset( range.start );
|
||
end = this.getNodeAndOffset( range.end );
|
||
|
||
if ( false && $.browser.msie ) {
|
||
if ( range.start === range.from ) {
|
||
if (
|
||
start.node === this.poll.rangySelection.anchorNode &&
|
||
start.offset === this.poll.rangySelection.anchorOffset &&
|
||
end.node === this.poll.rangySelection.focusNode &&
|
||
end.offset === this.poll.rangySelection.focusOffset
|
||
) {
|
||
return;
|
||
}
|
||
} else {
|
||
if (
|
||
end.node === this.poll.rangySelection.anchorNode &&
|
||
end.offset === this.poll.rangySelection.anchorOffset &&
|
||
start.node === this.poll.rangySelection.focusNode &&
|
||
start.offset === this.poll.rangySelection.focusOffset
|
||
) {
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
rangyRange.setStart( start.node, start.offset );
|
||
rangyRange.setEnd( end.node, end.offset );
|
||
rangySel.removeAllRanges();
|
||
rangySel.addRange( rangyRange, range.start !== range.from );
|
||
} else {
|
||
start = end = this.getNodeAndOffset( range.start );
|
||
|
||
if ( false && $.browser.msie ) {
|
||
if (
|
||
start.node === this.poll.rangySelection.anchorNode &&
|
||
start.offset === this.poll.rangySelection.anchorOffset
|
||
) {
|
||
return;
|
||
}
|
||
}
|
||
|
||
rangyRange.setStart( start.node, start.offset );
|
||
rangySel.setSingleRange( rangyRange );
|
||
}
|
||
};
|
||
|
||
/**
|
||
* Gets the nearest offset that a cursor can actually be placed at.
|
||
*
|
||
* TODO: Find a better name and a better place for this method
|
||
*
|
||
* @method
|
||
* @param {Number} offset Offset to start looking at
|
||
* @param {Number} [direction=-1] Direction to look in, +1 or -1
|
||
*/
|
||
ve.ce.Surface.prototype.getNearestCorrectOffset = function ( offset, direction ) {
|
||
var contentOffset, structuralOffset;
|
||
|
||
direction = direction > 0 ? 1 : -1;
|
||
if (
|
||
ve.dm.Document.isContentOffset( this.documentView.model.data, offset ) ||
|
||
this.hasSlugAtOffset( offset )
|
||
) {
|
||
return offset;
|
||
}
|
||
|
||
contentOffset = this.documentView.model.getNearestContentOffset( offset, direction );
|
||
structuralOffset = this.documentView.model.getNearestStructuralOffset( offset, direction, true );
|
||
|
||
if ( !this.hasSlugAtOffset( structuralOffset ) ) {
|
||
return contentOffset;
|
||
}
|
||
|
||
if ( direction === 1 ) {
|
||
if ( contentOffset < offset ) {
|
||
return structuralOffset;
|
||
} else {
|
||
return Math.min( contentOffset, structuralOffset );
|
||
}
|
||
} else {
|
||
if ( contentOffset > offset ) {
|
||
return structuralOffset;
|
||
} else {
|
||
return Math.max( contentOffset, structuralOffset );
|
||
}
|
||
}
|
||
};
|
||
|
||
/**
|
||
* Checks if a given offset is inside a slug.
|
||
*
|
||
* TODO: Find a better name and a better place for this method - probably in a document view?
|
||
*
|
||
* @method
|
||
* @param {Number} offset Offset to check for a slug at
|
||
* @returns {Boolean} A slug exists at the given offset
|
||
*/
|
||
ve.ce.Surface.prototype.hasSlugAtOffset = function ( offset ) {
|
||
return !!this.documentView.getSlugAtOffset( offset );
|
||
};
|
||
|
||
/**
|
||
* Gets a DOM node and offset that can be used to place a cursor, based on a given offset.
|
||
*
|
||
* The results of this function are meant to be used with rangy.
|
||
*
|
||
* @method
|
||
* @param {Number} offset Linear model offset
|
||
* @returns {Object} Object containing a node and offset property where node is an HTML element and
|
||
* offset is the position within the element
|
||
* @throws {Error} Offset could not be translated to a DOM element and offset
|
||
*/
|
||
ve.ce.Surface.prototype.getNodeAndOffset = function ( offset ) {
|
||
var node, startOffset, current, stack, item, $item, length,
|
||
slug = this.documentView.getSlugAtOffset( offset );
|
||
if ( slug ) {
|
||
return { node: slug[0].childNodes[0], offset: 0 };
|
||
}
|
||
node = this.documentView.getNodeFromOffset( offset );
|
||
startOffset = this.documentView.getDocumentNode().getOffsetFromNode( node ) +
|
||
( ( node.isWrapped() ) ? 1 : 0 );
|
||
current = [node.$.contents(), 0];
|
||
stack = [current];
|
||
|
||
while ( stack.length > 0 ) {
|
||
if ( current[1] >= current[0].length ) {
|
||
stack.pop();
|
||
current = stack[ stack.length - 1 ];
|
||
continue;
|
||
}
|
||
item = current[0][current[1]];
|
||
if ( item.nodeType === Node.TEXT_NODE ) {
|
||
length = item.textContent.length;
|
||
if ( offset >= startOffset && offset <= startOffset + length ) {
|
||
return {
|
||
node: item,
|
||
offset: offset - startOffset
|
||
};
|
||
} else {
|
||
startOffset += length;
|
||
}
|
||
} else if ( item.nodeType === Node.ELEMENT_NODE ) {
|
||
$item = current[0].eq( current[1] );
|
||
if ( $item.hasClass('ve-ce-slug') ) {
|
||
if ( offset === startOffset ) {
|
||
return {
|
||
node: $item[0],
|
||
offset: 1
|
||
};
|
||
}
|
||
} else if ( $item.is( '.ve-ce-branchNode, .ve-ce-leafNode' ) ) {
|
||
length = $item.data( 'node' ).model.getOuterLength();
|
||
if ( offset >= startOffset && offset < startOffset + length ) {
|
||
stack.push( [$item.contents(), 0] );
|
||
current[1]++;
|
||
current = stack[stack.length-1];
|
||
continue;
|
||
} else {
|
||
startOffset += length;
|
||
}
|
||
} else {
|
||
stack.push( [$item.contents(), 0] );
|
||
current[1]++;
|
||
current = stack[stack.length-1];
|
||
continue;
|
||
}
|
||
}
|
||
current[1]++;
|
||
}
|
||
throw new Error( 'Offset could not be translated to a DOM element and offset: ' + offset );
|
||
};
|
||
|
||
/**
|
||
* Gets the coordinates of the selection anchor.
|
||
*
|
||
* @method
|
||
*/
|
||
ve.ce.Surface.prototype.getSelectionRect = function () {
|
||
var rangySel = rangy.getSelection();
|
||
return {
|
||
start: rangySel.getStartDocumentPos(),
|
||
end: rangySel.getEndDocumentPos()
|
||
};
|
||
};
|
||
|
||
/**
|
||
* Tests if the modifier key for keyboard shortcuts is pressed.
|
||
*
|
||
* @method
|
||
* @param {jQuery.Event} e
|
||
*/
|
||
ve.ce.Surface.isShortcutKey = function ( e ) {
|
||
if ( e.ctrlKey || e.metaKey ) {
|
||
return true;
|
||
}
|
||
return false;
|
||
};
|
||
|
||
/**
|
||
* Removes localStorage keys for copy and paste after a day.
|
||
*
|
||
* @method
|
||
*/
|
||
ve.ce.Surface.clearLocalStorage = function () {
|
||
var i, len, key, time, now,
|
||
keysToRemove = [];
|
||
|
||
for ( i = 0, len = localStorage.length; i < len; i++ ) {
|
||
key = localStorage.key( i );
|
||
|
||
if ( key.indexOf( 've-' ) !== 0 ) {
|
||
return false;
|
||
}
|
||
|
||
time = JSON.parse( localStorage.getItem( key ) ).time;
|
||
now = new Date().getTime();
|
||
|
||
// Offset: 24 days (in miliseconds)
|
||
if ( now - time > ( 24 * 3600 * 1000 ) ) {
|
||
// Don't remove keys while iterating. Store them for later removal.
|
||
keysToRemove.push( key );
|
||
}
|
||
}
|
||
|
||
$.each( keysToRemove, function ( i, val ) {
|
||
localStorage.removeItem( val );
|
||
} );
|
||
};
|
||
|
||
/**
|
||
* Gets the surface model.
|
||
*
|
||
* @method
|
||
* @returns {ve.dm.Surface} Surface model
|
||
*/
|
||
ve.ce.Surface.prototype.getModel = function () {
|
||
return this.model;
|
||
};
|
||
|
||
/**
|
||
* Gets the document view.
|
||
*
|
||
* @method
|
||
* @returns {ve.ce.Document} Document view
|
||
*/
|
||
ve.ce.Surface.prototype.getDocument = function () {
|
||
return this.documentView;
|
||
};
|
||
|
||
/**
|
||
* @method
|
||
*/
|
||
ve.ce.Surface.prototype.enableRendering = function () {
|
||
this.renderingEnabled = true;
|
||
};
|
||
|
||
/**
|
||
* @method
|
||
*/
|
||
ve.ce.Surface.prototype.disableRendering = function () {
|
||
this.renderingEnabled = false;
|
||
};
|
||
|
||
/**
|
||
* @method
|
||
*/
|
||
ve.ce.Surface.prototype.isRenderingEnabled = function () {
|
||
return this.renderingEnabled;
|
||
};
|