mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-09-27 20:26:46 +00:00
5e16141750
It's what the docs say it should be, so let's call it that :) Change-Id: Ia10861ce77872243beb3d3a1886877824103f6c9
1086 lines
37 KiB
JavaScript
1086 lines
37 KiB
JavaScript
/*!
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* VisualEditor DataModel Converter class.
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*
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* @copyright 2011-2013 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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* DataModel converter.
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*
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* Converts between HTML DOM and VisualEditor linear data.
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*
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* @class
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* @constructor
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* @param {ve.dm.NodeFactory} nodeFactory
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* @param {ve.dm.AnnotationFactory} annotationFactory
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*/
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ve.dm.Converter = function VeDmConverter( nodeFactory, annotationFactory ) {
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// Properties
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this.nodeFactory = nodeFactory;
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this.annotationFactory = annotationFactory;
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this.elements = {
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'toDomElement': {},
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'toDataElement': {},
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'dataElementTypes': {}
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};
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// Events
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this.nodeFactory.addListenerMethod( this, 'register', 'onNodeRegister' );
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};
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/* Static Methods */
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/**
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* Get linear model data from a string optionally applying annotations
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*
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* @static
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* @param {string} text Plain text to convert
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* @param {ve.AnnotationSet} [annotations] Annotations to apply
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* @returns {Array} Linear model data, one element per character
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*/
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ve.dm.Converter.getDataContentFromText = function ( text, annotations ) {
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var characters = text.split( '' ),
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i;
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if ( !annotations || annotations.isEmpty() ) {
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return characters;
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}
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// Apply annotations to characters
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for ( i = 0; i < characters.length; i++ ) {
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// Make a shallow copy of the annotationSet object, otherwise adding an annotation to one
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// character automatically adds it to all of others as well, annotations should be treated
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// as immutable, so it's OK to share references, but annotation sets are not immutable, so
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// it's not safe to share references - each annotated character needs its own set
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characters[i] = [characters[i], annotations.clone()];
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}
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return characters;
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};
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/* Methods */
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/**
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* Handle register events from the node factory.
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*
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* FIXME
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* If a node is special; such as document, alienInline, alienBlock and text; its {converters}
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* property should be set to null, as to distinguish it from a new node type that someone has simply
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* forgotten to implement converters for.
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*
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* @method
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* @param {string} type Node type
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* @param {Function} constructor Node constructor
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* @throws {Error} Missing conversion data in node implementation
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*/
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ve.dm.Converter.prototype.onNodeRegister = function ( dataElementType, constructor ) {
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if ( !constructor.static.toDomElement || !constructor.static.toDataElement ) {
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throw new Error( 'Missing static properties in node implementation of ' + dataElementType );
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} else {
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var i,
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domElementTypes = constructor.static.matchTagNames || [],
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toDomElement = constructor.static.toDomElement,
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toDataElement = constructor.static.toDataElement;
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// Registration
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this.elements.toDomElement[dataElementType] = toDomElement;
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for ( i = 0; i < domElementTypes.length; i++ ) {
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this.elements.toDataElement[domElementTypes[i]] = toDataElement;
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this.elements.dataElementTypes[domElementTypes[i]] = dataElementType;
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}
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}
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};
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/**
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* Get the DOM element for a given linear model element.
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*
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* This invokes the toDomElement function registered for the element type.
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*
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* @method
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* @param {Object} dataElement Linear model element
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* @param {HTMLDocument} doc Document to create DOM elements in
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* @returns {HTMLElement|boolean} DOM element, or false if the element cannot be converted
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*/
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ve.dm.Converter.prototype.getDomElementFromDataElement = function ( dataElement, doc ) {
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var key, domElement, dataElementAttributes, wrapper,
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dataElementType = dataElement.type;
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if ( dataElementType === 'alienInline' || dataElementType === 'alienBlock' ) {
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// Alien
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// Create nodes from source
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wrapper = doc.createElement( 'div' );
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wrapper.innerHTML = dataElement.attributes.html;
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if ( wrapper.childNodes.length > 1 ) {
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// Wrap the HTML in a single element, this makes
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// it much easier to deal with. It'll be unwrapped
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// at the end of getDomFromData().
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domElement = doc.createElement( 'div' );
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domElement.setAttribute( 'data-ve-multi-child-alien-wrapper', 'true' );
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while ( wrapper.firstChild ) {
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domElement.appendChild( wrapper.firstChild );
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}
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} else {
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domElement = wrapper.firstChild;
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}
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return domElement;
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}
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if ( !( dataElementType in this.elements.toDomElement ) ) {
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// Unsupported element
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return false;
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}
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domElement = this.elements.toDomElement[dataElementType]( dataElement );
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dataElementAttributes = dataElement.attributes;
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if ( dataElementAttributes ) {
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for ( key in dataElementAttributes ) {
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// Only include 'html/0/*' attributes and strip the 'html/0/' from the beginning of the name
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if ( key.indexOf( 'html/0/' ) === 0 ) {
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domElement.setAttribute( key.substr( 7 ), dataElementAttributes[key] );
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}
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}
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}
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// Change markers
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if (
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dataElement.internal && dataElement.internal.changed &&
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!ve.isEmptyObject( dataElement.internal.changed ) &&
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ve.init.platform.useChangeMarkers()
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) {
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domElement.setAttribute( 'data-ve-changed',
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JSON.stringify( dataElement.internal.changed )
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);
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}
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return domElement;
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};
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/**
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* Get the linear model data element for a given DOM element.
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*
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* This invokes the toDataElement function registered for the element type
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*
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* @method
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* @param {HTMLElement} domElement DOM element
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* @param {ve.AnnotationSet} annotations Annotations to apply if the node is a content node
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* @returns {Object|boolean} Linear model element, or false if the node cannot be converted
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*/
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ve.dm.Converter.prototype.getDataElementFromDomElement = function ( domElement, annotations ) {
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var dataElement, domElementAttributes, dataElementAttributes, domElementAttribute, i,
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domElementType = domElement.nodeName.toLowerCase();
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annotations = annotations || new ve.AnnotationSet();
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if (
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// Unsupported elements
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!( domElementType in this.elements.toDataElement )
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// TODO check for generated elements
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) {
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return false;
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}
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dataElement = this.elements.toDataElement[domElementType]( domElement );
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domElementAttributes = domElement.attributes;
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if (
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dataElement && ve.dm.nodeFactory.doesNodeStoreHtmlAttributes( dataElement.type ) &&
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domElementAttributes.length
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) {
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dataElementAttributes = dataElement.attributes = dataElement.attributes || {};
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// Include all attributes and prepend 'html/0/' to each attribute name
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for ( i = 0; i < domElementAttributes.length; i++ ) {
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domElementAttribute = domElementAttributes[i];
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dataElementAttributes['html/0/' + domElementAttribute.name] = domElementAttribute.value;
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}
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}
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if ( this.nodeFactory.isNodeContent( dataElement.type ) && !annotations.isEmpty() ) {
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dataElement.annotations = annotations.clone();
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}
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return dataElement;
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};
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/**
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* Check if an HTML DOM node represents an annotation, and if so, build an annotation object for it.
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*
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* Annotation Object:
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* { 'type': 'type', data: { 'key': 'value', ... } }
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*
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* @param {HTMLElement} domElement HTML DOM node
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* @returns {Object|boolean} Annotation object, or false if the node is not an annotation
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*/
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ve.dm.Converter.prototype.getDataAnnotationFromDomElement = function ( domElement ) {
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return this.annotationFactory.createFromElement( domElement ) || false;
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};
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/**
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* Build an HTML DOM node for a linear model annotation.
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*
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* @method
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* @param {Object} dataAnnotation Annotation object
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* @returns {HTMLElement} HTML DOM node
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*/
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ve.dm.Converter.prototype.getDomElementFromDataAnnotation = function ( dataAnnotation, doc ) {
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var htmlData = dataAnnotation.toHTML(),
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domElement = doc.createElement( htmlData.tag );
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ve.setDomAttributes( domElement, htmlData.attributes );
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return domElement;
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};
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/**
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* Convert an HTML document to a linear model.
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* @param {HTMLDocument} doc HTML document to convert
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* @returns {Array} Linear model data
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*/
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ve.dm.Converter.prototype.getDataFromDom = function ( doc ) {
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// Possibly do things with doc and the head in the future
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return this.getDataFromDomRecursion( doc.body );
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};
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/**
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* Recursive implementation of getDataFromDom(). For internal use.
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*
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* @method
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* @param {HTMLElement} domElement HTML element to convert
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* @param {ve.AnnotationSet} [annotations] Annotations to apply to the generated data
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* @param {Object} [dataElement] Data element to wrap the returned data in
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* @param {Array} [path] Array of linear model element types
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* @param {boolean} [alreadyWrapped] Whether the caller has already started wrapping bare content in a paragraph
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* @returns {Array} Linear model data
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*/
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ve.dm.Converter.prototype.getDataFromDomRecursion = function ( domElement, annotations,
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dataElement, path, alreadyWrapped ) {
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function createAlien( domElement, context, isWrapper ) {
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// We generate alienBlock elements for block tags and alienInline elements for
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// inline tags; unless we're in a content location, in which case we have no choice
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// but to generate an alienInline element.
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var isInline =
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// Force inline in content locations (but not wrappers)
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( !context.inWrapper && context.expectingContent ) ||
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// Also force inline in wrappers that we can't close
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( context.inWrapper && !context.canCloseWrapper ) ||
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// Look at the tag name otherwise
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!ve.isBlockElement( domElement ),
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type = isInline ? 'alienInline' : 'alienBlock',
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html, alien;
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if ( isWrapper ) {
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html = $( domElement ).html();
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} else {
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html = $( '<div>', doc ).append( $( domElement ).clone() ).html();
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}
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alien = [
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{
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'type': type,
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'attributes': {
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'html': html
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}
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},
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{ 'type': '/' + type }
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];
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if ( !annotations.isEmpty() ) {
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alien[0].annotations = annotations.clone();
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}
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return alien;
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}
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function addWhitespace( element, index, whitespace ) {
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if ( !element.internal ) {
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element.internal = {};
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}
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// whitespace = [ outerPre, innerPre, innerPost, outerPost ]
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// <tag> text </tag> <nextTag>
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// ^^^^^^^^^^ ^^^^^^^^^ ^^^^^^^^^^^ ^^^^^^^^^^
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// outerPre innerPre innerPost outerPost
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if ( !element.internal.whitespace ) {
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element.internal.whitespace = [];
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}
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if ( !element.internal.whitespace[index] ) {
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element.internal.whitespace[index] = '';
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}
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element.internal.whitespace[index] = whitespace;
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}
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function processNextWhitespace( element ) {
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// This function uses and changes nextWhitespace in the outer function's scope,
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// which means it's not really a function but more of a shortcut.
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if ( nextWhitespace !== '' ) {
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addWhitespace( element, 0, nextWhitespace );
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nextWhitespace = '';
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}
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}
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function startWrapping() {
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// Mark this paragraph as having been generated by
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// us, so we can strip it on the way out
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wrappingParagraph = {
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'type': 'paragraph',
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'internal': { 'generated': 'wrapper' }
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};
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data.push( wrappingParagraph );
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context.inWrapper = true;
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context.canCloseWrapper = true;
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context.expectingContent = true;
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processNextWhitespace( wrappingParagraph );
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}
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function stopWrapping() {
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if ( wrappedWhitespace !== '' ) {
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// Remove wrappedWhitespace from data
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data.splice( wrappedWhitespaceIndex, wrappedWhitespace.length );
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addWhitespace( wrappingParagraph, 3, wrappedWhitespace );
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nextWhitespace = wrappedWhitespace;
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}
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data.push( { 'type': '/paragraph' } );
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wrappingParagraph = undefined;
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context.inWrapper = false;
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context.canCloseWrapper = false;
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context.expectingContent = originallyExpectingContent;
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}
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/**
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* Helper function to group adjacent child elements with the same about attribute together.
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* If there are multiple adjacent child nodes with the same about attribute, they are
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* wrapped in a `<div>` with the data-ve-aboutgroup attribute set.
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*
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* This function does not wrap single-element about groups, and does not descend into the
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* child elements.
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*
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* @private
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* @param element {HTMLElement} Element to process
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*/
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function doAboutGrouping( element ) {
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var child = element.firstChild, textNodes = [],
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prevChild, aboutGroup, aboutWrapper, childAbout, nextChild, i;
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while ( child ) {
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nextChild = child.nextSibling;
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if ( !child.getAttribute ) {
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// Text nodes don't have a getAttribute() method. Thanks HTML DOM,
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// that's really helpful ^^
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textNodes.push( child );
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child = nextChild;
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continue;
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}
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childAbout = child.getAttribute( 'about' );
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if ( childAbout && !aboutGroup ) {
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// Start of a new about group
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aboutGroup = childAbout;
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} else if ( childAbout && childAbout === aboutGroup ) {
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// Continuation of the current about group
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if ( !aboutWrapper ) {
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// This is the second child in this group, so the
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// previous child is the first child in this group.
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// Wrap the previous child
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aboutWrapper = doc.createElement( 'div' );
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aboutWrapper.setAttribute( 'data-ve-aboutgroup', aboutGroup );
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element.insertBefore( aboutWrapper, prevChild );
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aboutWrapper.appendChild( prevChild );
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}
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// Append any outstanding text nodes to the wrapper
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for ( i = 0; i < textNodes.length; i++ ) {
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aboutWrapper.appendChild( textNodes[i] );
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}
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// Append this child to the wrapper
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aboutWrapper.appendChild( child );
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} else if ( aboutGroup ) {
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// This child isn't in the current about group
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aboutGroup = undefined;
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aboutWrapper = undefined;
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if ( childAbout ) {
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// Start of a new about group
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aboutGroup = childAbout;
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}
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}
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prevChild = child;
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child = nextChild;
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textNodes = [];
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}
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}
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// Fallback to defaults
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annotations = annotations || new ve.AnnotationSet();
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path = path || ['document'];
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var i, j, childDomElement, annotation, childDataElement, text, childTypes, matches,
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wrappingParagraph, prevElement, alien, rdfaType, isLink, childAnnotations,
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doc = domElement.ownerDocument,
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data = [],
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branchType = path[path.length - 1],
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branchHasContent = this.nodeFactory.canNodeContainContent( branchType ),
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originallyExpectingContent = branchHasContent || !annotations.isEmpty(),
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childIsContent,
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nextWhitespace = '',
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wrappedWhitespace = '',
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wrappedWhitespaceIndex,
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context = {
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'expectingContent': originallyExpectingContent,
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'inWrapper': alreadyWrapped,
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'canCloseWrapper': false
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};
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// Open element
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if ( dataElement ) {
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data.push( dataElement );
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}
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// Do about grouping
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// FIXME this assumes every about group is an alien
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doAboutGrouping( domElement );
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// Add contents
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for ( i = 0; i < domElement.childNodes.length; i++ ) {
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childDomElement = domElement.childNodes[i];
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switch ( childDomElement.nodeType ) {
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case Node.ELEMENT_NODE:
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// Alienate about groups
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if ( childDomElement.hasAttribute( 'data-ve-aboutgroup' ) ) {
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alien = createAlien( childDomElement, context, true );
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if ( context.inWrapper && alien[0].type === 'alienBlock' ) {
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stopWrapping();
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} else if (
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!context.inWrapper && !context.expectingContent &&
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alien[0].type === 'alienInline'
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) {
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startWrapping();
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}
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data = data.concat( alien );
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processNextWhitespace( alien[0] );
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prevElement = alien[0];
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break;
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}
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// HACK handle <meta>/<link> separately because of the
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// metaInline/metaBlock distinction
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if (
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childDomElement.nodeName.toLowerCase() === 'meta' ||
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childDomElement.nodeName.toLowerCase() === 'link'
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) {
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isLink = childDomElement.nodeName.toLowerCase() === 'link';
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childDataElement = {
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'type': context.expectingContent ? 'metaInline' : 'metaBlock',
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'attributes': {
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'style': isLink ? 'link' : 'meta',
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'key': childDomElement.getAttribute( isLink ? 'rel' : 'property' )
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}
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};
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if ( childDomElement.hasAttribute( isLink ? 'href' : 'content' ) ) {
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childDataElement.attributes.value = childDomElement.getAttribute( isLink ? 'href' : 'content' );
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}
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// Preserve HTML attributes
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// FIXME the following is duplicated from getDataElementFromDomElement()
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// Include all attributes and prepend 'html/0/' to each attribute name
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for ( j = 0; j < childDomElement.attributes.length; j++ ) {
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// ..but exclude attributes we've already processed,
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// because they'll be overwritten otherwise *sigh*
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// FIXME this sucks, we need a new node type API so bad
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if (
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childDomElement.attributes[j].name !== ( isLink ? 'rel' : 'property' ) &&
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childDomElement.attributes[j].name !== ( isLink ? 'href' : 'content' )
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) {
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childDataElement.attributes['html/0/' + childDomElement.attributes[j].name] = childDomElement.attributes[j].value;
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}
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}
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data.push( childDataElement );
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data.push( { 'type': context.expectingContent ? '/metaInline' : '/metaBlock' } );
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processNextWhitespace( childDataElement );
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prevElement = childDataElement;
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break;
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}
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// Alienate anything with a mw: type that isn't registered
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// HACK because we don't actually have an RDFa type registry yet,
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// this hardcodes the set of recognized types
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rdfaType = childDomElement.getAttribute( 'rel' ) ||
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childDomElement.getAttribute( 'typeof' ) ||
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childDomElement.getAttribute( 'property' );
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if (
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rdfaType &&
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rdfaType.match( /^mw:/ ) &&
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!rdfaType.match( /^mw:WikiLink/ ) &&
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!rdfaType.match( /^mw:ExtLink/ ) &&
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!rdfaType.match( /^mw:Entity/ )
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) {
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alien = createAlien( childDomElement, context );
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if ( context.inWrapper && alien[0].type === 'alienBlock' ) {
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stopWrapping();
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} else if (
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!context.inWrapper && !context.expectingContent &&
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alien[0].type === 'alienInline'
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) {
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startWrapping();
|
|
}
|
|
data = data.concat( alien );
|
|
processNextWhitespace( alien[0] );
|
|
prevElement = alien[0];
|
|
break;
|
|
}
|
|
|
|
// Detect and handle annotated content
|
|
// HACK except for mw:Entity. We need a node API rewrite, badly
|
|
annotation = this.getDataAnnotationFromDomElement( childDomElement );
|
|
if ( annotation && rdfaType !== 'mw:Entity' ) {
|
|
// Start auto-wrapping of bare content
|
|
if ( !context.inWrapper && !context.expectingContent ) {
|
|
startWrapping();
|
|
prevElement = wrappingParagraph;
|
|
}
|
|
// Append child element data
|
|
childAnnotations = annotations.clone();
|
|
childAnnotations.push( annotation );
|
|
data = data.concat(
|
|
this.getDataFromDomRecursion(
|
|
childDomElement, childAnnotations,
|
|
undefined, path, context.inWrapper
|
|
)
|
|
);
|
|
break;
|
|
}
|
|
|
|
// Look up child element type
|
|
childDataElement = this.getDataElementFromDomElement( childDomElement, annotations );
|
|
if ( childDataElement ) {
|
|
childIsContent = this.nodeFactory.isNodeContent( childDataElement.type );
|
|
// Check that something isn't terribly wrong
|
|
if ( !(
|
|
// Non-content child in a content container
|
|
( originallyExpectingContent && !childIsContent ) ||
|
|
// Non-content child trying to break wrapping at
|
|
// the wrong level
|
|
( context.inWrapper && !context.canCloseWrapper && !childIsContent )
|
|
) ) {
|
|
// End auto-wrapping of bare content from a previously processed node
|
|
// but only if childDataElement is a non-content element
|
|
if ( context.inWrapper && context.canCloseWrapper && !childIsContent ) {
|
|
stopWrapping();
|
|
} else if ( !context.inWrapper && !context.expectingContent && childIsContent ) {
|
|
startWrapping();
|
|
prevElement = wrappingParagraph;
|
|
}
|
|
if ( this.nodeFactory.canNodeHaveChildren( childDataElement.type ) ) {
|
|
// Append child element data
|
|
data = data.concat(
|
|
this.getDataFromDomRecursion(
|
|
childDomElement,
|
|
new ve.AnnotationSet(),
|
|
childDataElement,
|
|
path.concat( childDataElement.type ),
|
|
context.inWrapper
|
|
)
|
|
);
|
|
} else {
|
|
// Append empty node
|
|
data.push( childDataElement );
|
|
data.push( { 'type': '/' + childDataElement.type } );
|
|
}
|
|
processNextWhitespace( childDataElement );
|
|
prevElement = childDataElement;
|
|
break;
|
|
}
|
|
// If something is wrong, fall through, and the bad child
|
|
// will be alienated below.
|
|
}
|
|
// We don't know what this is, fall back to alien.
|
|
alien = createAlien( childDomElement, context );
|
|
if ( context.inWrapper && alien[0].type === 'alienBlock' ) {
|
|
stopWrapping();
|
|
} else if (
|
|
!context.inWrapper && !context.expectingContent &&
|
|
alien[0].type === 'alienInline'
|
|
) {
|
|
startWrapping();
|
|
}
|
|
data = data.concat( alien );
|
|
processNextWhitespace( alien[0] );
|
|
prevElement = alien[0];
|
|
break;
|
|
case Node.TEXT_NODE:
|
|
text = childDomElement.data;
|
|
if ( text === '' ) {
|
|
// Empty text node?!?
|
|
break;
|
|
}
|
|
if ( !originallyExpectingContent ) {
|
|
// Strip and store outer whitespace
|
|
if ( text.match( /^\s+$/ ) ) {
|
|
// This text node is whitespace only
|
|
if ( context.inWrapper ) {
|
|
// We're already wrapping, so output this whitespace
|
|
// and store it in wrappedWhitespace (see
|
|
// comment about wrappedWhitespace below)
|
|
wrappedWhitespace = text;
|
|
wrappedWhitespaceIndex = data.length;
|
|
data = data.concat(
|
|
ve.dm.Converter.getDataContentFromText( wrappedWhitespace, annotations )
|
|
);
|
|
} else {
|
|
// We're not in wrapping mode, store this whitespace
|
|
if ( !prevElement ) {
|
|
if ( dataElement ) {
|
|
// First child, store as inner
|
|
// whitespace in the parent
|
|
addWhitespace( dataElement, 1, text );
|
|
}
|
|
// Else, WTF?!? This is not supposed to
|
|
// happen, but it's not worth
|
|
// throwing an exception over.
|
|
} else {
|
|
addWhitespace( prevElement, 3, text );
|
|
}
|
|
nextWhitespace = text;
|
|
wrappedWhitespace = '';
|
|
}
|
|
// We're done, no actual text left to process
|
|
break;
|
|
} else {
|
|
// This text node contains actual text
|
|
// Separate the real text from the whitespace
|
|
// HACK: . doesn't match newlines in JS, so use
|
|
// [\s\S] to match any character
|
|
matches = text.match( /^(\s*)([\s\S]*?)(\s*)$/ );
|
|
if ( !context.inWrapper ) {
|
|
// Wrap the text in a paragraph and output it
|
|
startWrapping();
|
|
|
|
// Only store leading whitespace if we just
|
|
// started wrapping
|
|
if ( matches[1] !== '' ) {
|
|
if ( !prevElement ) {
|
|
if ( dataElement ) {
|
|
// First child, store as inner
|
|
// whitespace in the parent
|
|
addWhitespace( dataElement, 1, matches[1] );
|
|
}
|
|
// Else, WTF?!? This is not supposed to
|
|
// happen, but it's not worth
|
|
// throwing an exception over.
|
|
} else {
|
|
addWhitespace( prevElement, 3, matches[1] );
|
|
}
|
|
addWhitespace( wrappingParagraph, 0, matches[1] );
|
|
}
|
|
} else {
|
|
// We were already wrapping in a paragraph,
|
|
// so the leading whitespace must be output
|
|
data = data.concat(
|
|
ve.dm.Converter.getDataContentFromText( matches[1], annotations )
|
|
);
|
|
}
|
|
// Output the text sans whitespace
|
|
data = data.concat(
|
|
ve.dm.Converter.getDataContentFromText( matches[2], annotations )
|
|
);
|
|
|
|
// Don't store this in wrappingParagraph.internal.whitespace[3]
|
|
// and nextWhitespace just yet. Instead, store it
|
|
// in wrappedWhitespace. There might be more text
|
|
// nodes after this one, so we output wrappedWhitespace
|
|
// for now and undo that if it turns out this was
|
|
// the last text node. We can't output it later
|
|
// because we have to apply the correct annotations.
|
|
wrappedWhitespace = matches[3];
|
|
wrappedWhitespaceIndex = data.length;
|
|
data = data.concat(
|
|
ve.dm.Converter.getDataContentFromText( wrappedWhitespace, annotations )
|
|
);
|
|
prevElement = wrappingParagraph;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Strip leading and trailing inner whitespace
|
|
// (but only in non-annotation nodes)
|
|
// and store it so it can be restored later.
|
|
if (
|
|
annotations.isEmpty() && i === 0 && dataElement &&
|
|
!this.nodeFactory.doesNodeHaveSignificantWhitespace( dataElement.type )
|
|
) {
|
|
// Strip leading whitespace from the first child
|
|
matches = text.match( /^\s+/ );
|
|
if ( matches && matches[0] !== '' ) {
|
|
addWhitespace( dataElement, 1, matches[0] );
|
|
text = text.substring( matches[0].length );
|
|
}
|
|
}
|
|
if (
|
|
annotations.isEmpty() &&
|
|
i === domElement.childNodes.length - 1 &&
|
|
dataElement &&
|
|
!this.nodeFactory.doesNodeHaveSignificantWhitespace( dataElement.type )
|
|
) {
|
|
// Strip trailing whitespace from the last child
|
|
matches = text.match( /\s+$/ );
|
|
if ( matches && matches[0] !== '' ) {
|
|
addWhitespace( dataElement, 2, matches[0] );
|
|
text = text.substring( 0,
|
|
text.length - matches[0].length );
|
|
}
|
|
}
|
|
|
|
// Annotate the text and output it
|
|
data = data.concat(
|
|
ve.dm.Converter.getDataContentFromText( text, annotations )
|
|
);
|
|
break;
|
|
case Node.COMMENT_NODE:
|
|
childDataElement = {
|
|
'type': context.expectingContent ? 'metaInline' : 'metaBlock',
|
|
'attributes': {
|
|
'style': 'comment',
|
|
'text': childDomElement.data
|
|
}
|
|
};
|
|
data.push( childDataElement );
|
|
data.push( { 'type': context.expectingContent ? '/metaInline' : '/metaBlock' } );
|
|
processNextWhitespace( childDataElement );
|
|
prevElement = childDataElement;
|
|
break;
|
|
}
|
|
}
|
|
// End auto-wrapping of bare content
|
|
if ( context.inWrapper && context.canCloseWrapper ) {
|
|
stopWrapping();
|
|
// HACK: don't set context.inWrapper = false here because it's checked below
|
|
context.inWrapper = true;
|
|
}
|
|
|
|
// If we're closing a node that doesn't have any children, but could contain a paragraph,
|
|
// add a paragraph. This prevents things like empty list items
|
|
childTypes = this.nodeFactory.getChildNodeTypes( branchType );
|
|
if ( branchType !== 'paragraph' && dataElement && data[data.length - 1] === dataElement &&
|
|
!context.inWrapper && !this.nodeFactory.canNodeContainContent( branchType ) &&
|
|
!this.nodeFactory.isNodeContent( branchType ) &&
|
|
( childTypes === null || ve.indexOf( 'paragraph', childTypes ) !== -1 )
|
|
) {
|
|
data.push( { 'type': 'paragraph', 'internal': { 'generated': 'empty' } } );
|
|
data.push( { 'type': '/paragraph' } );
|
|
}
|
|
|
|
// Close element
|
|
if ( dataElement ) {
|
|
data.push( { 'type': '/' + dataElement.type } );
|
|
// Add the whitespace after the last child to the parent as innerPost
|
|
if ( nextWhitespace !== '' ) {
|
|
addWhitespace( dataElement, 2, nextWhitespace );
|
|
nextWhitespace = '';
|
|
}
|
|
}
|
|
// Don't return an empty document
|
|
if ( branchType === 'document' && data.length === 0 ) {
|
|
return [
|
|
{ 'type': 'paragraph', 'internal': { 'generated': 'empty' } },
|
|
{ 'type': '/paragraph' }
|
|
];
|
|
}
|
|
return data;
|
|
};
|
|
|
|
/**
|
|
* Convert linear model data to an HTML DOM
|
|
*
|
|
* @method
|
|
* @param {Array} data Linear model data
|
|
* @returns {HTMLDocument} Document containing the resulting HTML
|
|
*/
|
|
ve.dm.Converter.prototype.getDomFromData = function ( data ) {
|
|
var text, i, j, k, annotations, annotation, annotationElement, dataElement, arr,
|
|
childDomElement, pre, ours, theirs, parentDomElement, startClosingAt,
|
|
isContentNode, changed, parentChanged,
|
|
doc = ve.createDocumentFromHTML( '' ),
|
|
container = doc.body,
|
|
domElement = container,
|
|
annotationStack = new ve.AnnotationSet();
|
|
|
|
for ( i = 0; i < data.length; i++ ) {
|
|
if ( typeof data[i] === 'string' ) {
|
|
// Text
|
|
text = '';
|
|
// Continue forward as far as the plain text goes
|
|
while ( typeof data[i] === 'string' ) {
|
|
text += data[i];
|
|
i++;
|
|
}
|
|
// i points to the first non-text thing, go back one so we don't skip this later
|
|
i--;
|
|
// Add text
|
|
domElement.appendChild( doc.createTextNode( text ) );
|
|
} else if (
|
|
ve.isArray( data[i] ) ||
|
|
(
|
|
data[i].annotations !== undefined &&
|
|
this.nodeFactory.isNodeContent( data[i].type )
|
|
)
|
|
) {
|
|
// Annotated text or annotated nodes
|
|
text = '';
|
|
while (
|
|
ve.isArray( data[i] ) ||
|
|
(
|
|
data[i].annotations !== undefined &&
|
|
this.nodeFactory.isNodeContent( data[i].type )
|
|
)
|
|
) {
|
|
annotations = data[i].annotations || data[i][1];
|
|
// Close annotations as needed
|
|
// Go through annotationStack from bottom to top (low to high),
|
|
// and find the first annotation that's not in annotations.
|
|
startClosingAt = undefined;
|
|
arr = annotationStack.get();
|
|
for ( j = 0; j < arr.length; j++ ) {
|
|
annotation = arr[j];
|
|
if ( !annotations.contains( annotation ) ) {
|
|
startClosingAt = j;
|
|
break;
|
|
}
|
|
}
|
|
if ( startClosingAt !== undefined ) {
|
|
// Close all annotations from top to bottom (high to low)
|
|
// until we reach startClosingAt
|
|
for ( j = annotationStack.getLength() - 1; j >= startClosingAt; j-- ) {
|
|
// Add text if needed
|
|
if ( text.length > 0 ) {
|
|
domElement.appendChild( doc.createTextNode( text ) );
|
|
text = '';
|
|
}
|
|
// Traverse up
|
|
domElement = domElement.parentNode;
|
|
// Remove from annotationStack
|
|
annotationStack.removeAt( j );
|
|
}
|
|
}
|
|
|
|
// Open annotations as needed
|
|
arr = annotations.get();
|
|
for ( j = 0; j < arr.length; j++ ) {
|
|
annotation = arr[j];
|
|
if ( !annotationStack.contains( annotation ) ) {
|
|
// Add text if needed
|
|
if ( text.length > 0 ) {
|
|
domElement.appendChild( doc.createTextNode( text ) );
|
|
text = '';
|
|
}
|
|
// Create new node and descend into it
|
|
annotationElement = this.getDomElementFromDataAnnotation( annotation, doc );
|
|
domElement.appendChild( annotationElement );
|
|
domElement = annotationElement;
|
|
// Add to annotationStack
|
|
annotationStack.push( annotation );
|
|
}
|
|
}
|
|
|
|
if ( data[i].annotations === undefined ) {
|
|
// Annotated text
|
|
text += data[i][0];
|
|
} else {
|
|
// Annotated node
|
|
// Add text if needed
|
|
if ( text.length > 0 ) {
|
|
domElement.appendChild( doc.createTextNode( text ) );
|
|
text = '';
|
|
}
|
|
// Insert the element
|
|
domElement.appendChild( this.getDomElementFromDataElement( data[i], doc ) );
|
|
// Increment i once more so we skip over the closing as well
|
|
i++;
|
|
}
|
|
i++;
|
|
}
|
|
// We're now at the first non-annotated thing, go back one so we don't skip this later
|
|
i--;
|
|
|
|
// Add any gathered text
|
|
if ( text.length > 0 ) {
|
|
domElement.appendChild( doc.createTextNode( text ) );
|
|
text = '';
|
|
}
|
|
// Close any remaining annotation nodes
|
|
for ( j = annotationStack.getLength() - 1; j >= 0; j-- ) {
|
|
// Traverse up
|
|
domElement = domElement.parentNode;
|
|
}
|
|
// Clear annotationStack
|
|
annotationStack = new ve.AnnotationSet();
|
|
} else if ( data[i].type !== undefined ) {
|
|
dataElement = data[i];
|
|
// Element
|
|
if ( dataElement.type.charAt( 0 ) === '/' ) {
|
|
parentDomElement = domElement.parentNode;
|
|
isContentNode = this.nodeFactory.isNodeContent( data[i].type.substr( 1 ) );
|
|
// Process whitespace
|
|
// whitespace = [ outerPre, innerPre, innerPost, outerPost ]
|
|
if (
|
|
!isContentNode &&
|
|
domElement.veInternal &&
|
|
domElement.veInternal.whitespace
|
|
) {
|
|
// Process inner whitespace. innerPre is for sure legitimate
|
|
// whitespace that should be inserted; if it was a duplicate
|
|
// of our child's outerPre, we would have cleared it.
|
|
pre = domElement.veInternal.whitespace[1];
|
|
if ( pre ) {
|
|
if (
|
|
domElement.firstChild &&
|
|
domElement.firstChild.nodeType === 3
|
|
) {
|
|
// First child is a TextNode, prepend to it
|
|
domElement.firstChild.insertData( 0, pre );
|
|
} else {
|
|
// Prepend a TextNode
|
|
domElement.insertBefore(
|
|
doc.createTextNode( pre ),
|
|
domElement.firstChild
|
|
);
|
|
}
|
|
}
|
|
ours = domElement.veInternal.whitespace[2];
|
|
if ( domElement.lastOuterPost === undefined ) {
|
|
// This node didn't have any structural children
|
|
// (i.e. it's a content-containing node), so there's
|
|
// nothing to check innerPost against
|
|
theirs = ours;
|
|
} else {
|
|
theirs = domElement.lastOuterPost;
|
|
}
|
|
if ( ours && ours === theirs ) {
|
|
if (
|
|
domElement.lastChild &&
|
|
domElement.lastChild.nodeType === 3
|
|
) {
|
|
// Last child is a TextNode, append to it
|
|
domElement.lastChild.appendData( ours );
|
|
} else {
|
|
// Append a TextNode
|
|
domElement.appendChild(
|
|
doc.createTextNode( ours )
|
|
);
|
|
}
|
|
}
|
|
// Tell the parent about our outerPost
|
|
parentDomElement.lastOuterPost = domElement.veInternal.whitespace[3] || '';
|
|
} else if ( !isContentNode ) {
|
|
// Use empty string, because undefined means there were no
|
|
// structural children
|
|
parentDomElement.lastOuterPost = '';
|
|
}
|
|
// else don't touch lastOuterPost
|
|
|
|
// If closing a generated wrapper node, unwrap it
|
|
// It would be nicer if we could avoid generating in the first
|
|
// place, but then remembering where we have to skip ascending
|
|
// to the parent would be tricky.
|
|
// We unwrap all nodes with generated=wrapper, as well as nodes that
|
|
// have generated=empty and are empty.
|
|
if (
|
|
domElement.veInternal && (
|
|
domElement.veInternal.generated === 'wrapper' || (
|
|
domElement.veInternal.generated === 'empty' &&
|
|
domElement.childNodes.length === 0
|
|
)
|
|
)
|
|
) {
|
|
while ( domElement.firstChild ) {
|
|
parentDomElement.insertBefore(
|
|
domElement.firstChild,
|
|
domElement
|
|
);
|
|
}
|
|
// Transfer change markers
|
|
changed = domElement.getAttribute( 'data-ve-changed' );
|
|
if ( changed ) {
|
|
parentChanged = parentDomElement.getAttribute( 'data-ve-changed' );
|
|
if ( parentChanged ) {
|
|
changed = $.parseJSON( changed );
|
|
parentChanged = $.parseJSON( parentChanged );
|
|
for ( k in changed ) {
|
|
if ( k in parentChanged ) {
|
|
parentChanged[k] += changed[k];
|
|
} else {
|
|
parentChanged[k] = changed[k];
|
|
}
|
|
}
|
|
parentDomElement.setAttribute( 'data-ve-changed',
|
|
JSON.stringify( parentChanged ) );
|
|
} else {
|
|
parentDomElement.setAttribute( 'data-ve-changed',
|
|
changed );
|
|
}
|
|
}
|
|
parentDomElement.removeChild( domElement );
|
|
}
|
|
|
|
delete domElement.veInternal;
|
|
delete domElement.lastOuterPost;
|
|
// Ascend to parent node
|
|
domElement = parentDomElement;
|
|
} else {
|
|
// Create node from data
|
|
childDomElement = this.getDomElementFromDataElement( dataElement, doc );
|
|
// Add reference to internal data
|
|
if ( dataElement.internal ) {
|
|
childDomElement.veInternal = dataElement.internal;
|
|
}
|
|
// Add element
|
|
domElement.appendChild( childDomElement );
|
|
// Descend into child node
|
|
parentDomElement = domElement;
|
|
domElement = childDomElement;
|
|
|
|
// Process outer whitespace
|
|
// Every piece of outer whitespace is duplicated somewhere:
|
|
// each node's outerPost is duplicated as the next node's
|
|
// outerPre, the first node's outerPre is the parent's
|
|
// innerPre, and the last node's outerPost is the parent's
|
|
// innerPost. For each piece of whitespace, we verify that
|
|
// the duplicate matches. If it doesn't, we take that to
|
|
// mean the user has messed with it and don't output any
|
|
// whitespace.
|
|
if ( domElement.veInternal && domElement.veInternal.whitespace ) {
|
|
// Process this node's outerPre
|
|
ours = domElement.veInternal.whitespace[0];
|
|
theirs = undefined;
|
|
if ( domElement.previousSibling ) {
|
|
// Get previous sibling's outerPost
|
|
theirs = parentDomElement.lastOuterPost;
|
|
} else if ( parentDomElement === container ) {
|
|
// outerPre of the very first node in the document, this one
|
|
// has no duplicate
|
|
theirs = ours;
|
|
} else {
|
|
// First child, get parent's innerPre
|
|
if (
|
|
parentDomElement.veInternal &&
|
|
parentDomElement.veInternal.whitespace
|
|
) {
|
|
theirs = parentDomElement.veInternal.whitespace[1];
|
|
// Clear after use so it's not used twice
|
|
parentDomElement.veInternal.whitespace[1] = undefined;
|
|
}
|
|
// else theirs=undefined
|
|
}
|
|
if ( ours && ours === theirs ) {
|
|
// Matches the duplicate, insert a TextNode
|
|
parentDomElement.insertBefore(
|
|
doc.createTextNode( ours ),
|
|
domElement
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// Process the outerPost whitespace of the very last node
|
|
if ( container.lastOuterPost !== undefined ) {
|
|
if ( container.lastChild && container.lastChild.nodeType === 3 ) {
|
|
// Last child is a TextNode, append to it
|
|
container.lastChild.appendData( container.lastOuterPost );
|
|
} else {
|
|
// Append a TextNode
|
|
container.appendChild( doc.createTextNode( container.lastOuterPost ) );
|
|
}
|
|
delete container.lastOuterPost;
|
|
}
|
|
|
|
// Unwrap multi-child alien wrappers
|
|
$( container ).find( '[data-ve-multi-child-alien-wrapper]' ).each( function() {
|
|
$( this ).replaceWith( $( this ).contents() );
|
|
} );
|
|
|
|
// Workaround for bug 42469: if a <pre> starts with a newline, that means .innerHTML will
|
|
// screw up and stringify it with one fewer newline. Work around this by adding a newline.
|
|
// If we don't see a leading newline, we still don't know if the original HTML was
|
|
// <pre>Foo</pre> or <pre>\nFoo</pre> , but that's a syntactic difference, not a semantic
|
|
// one, and handling that is Parsoid's job.
|
|
$( container ).find( 'pre' ).each( function() {
|
|
var matches;
|
|
if ( this.firstChild.nodeType === Node.TEXT_NODE ) {
|
|
matches = this.firstChild.data.match( /^(\r\n|\r|\n)/ );
|
|
if ( matches && matches[1] ) {
|
|
// Prepend a newline exactly like the one we saw
|
|
this.firstChild.insertData( 0, matches[1] );
|
|
}
|
|
}
|
|
} );
|
|
return doc;
|
|
};
|
|
|
|
/* Initialization */
|
|
|
|
ve.dm.converter = new ve.dm.Converter( ve.dm.nodeFactory, ve.dm.annotationFactory );
|