mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-12-01 17:36:35 +00:00
70fa9c8aeb
Annotation types with more than one slash such as 'link/ExtLink/URL' weren't being processed correctly because .split( '/', 2 ) throws away everything after the second slash. Instead, don't pass a limit to .split(); the code for reconstructing a slash-separated string from multiple components was already in place. Also add test cases for URL links and numbered links. (Do you like the lines-of-code to lines-of-test ratio in this commit, Trevor? ;) ) Change-Id: I7add87396447a01b1c23a4f9bfd63d2e8fd861ce
586 lines
20 KiB
JavaScript
586 lines
20 KiB
JavaScript
/**
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* VisualEditor data model Converter 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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* Converter 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 {Object} options Conversion options
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*/
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ve.dm.Converter = function ( 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 = { 'toDomElement': {}, 'toDataElement': {}, 'dataElementTypes': {} };
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this.annotations = { 'toDomElement': {}, 'toDataAnnotation': {} };
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// Events
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this.nodeFactory.addListenerMethod( this, 'register', 'onNodeRegister' );
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this.annotationFactory.addListenerMethod( this, 'register', 'onAnnotationRegister' );
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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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* @param {String} text Plain text to convert
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* @param {Array} [annotations] Array of annotation objects 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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annotationMap = {},
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i;
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if ( !annotations || annotations.length === 0 ) {
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return characters;
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}
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// Build annotation map
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for ( i = 0; i < annotations.length; i++ ) {
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if ( annotations[i].data && ve.isEmptyObject( annotations[i].data ) ) {
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// Cleanup empty data property
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delete annotations[i].data;
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}
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annotationMap[ve.getHash( annotations[i] )] = annotations[i];
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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 annotationMap 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 maps are not immutable, so
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// its not safe to share references - each annotated character needs its own map
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characters[i] = [characters[i], ve.extendObject( {}, annotationMap )];
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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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* Responds to register events from the node factory.
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*
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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 'Missing conversion data in node implementation of {type}'
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*/
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ve.dm.Converter.prototype.onNodeRegister = function ( dataElementType, constructor ) {
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if ( constructor.converters === undefined ) {
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throw new Error( 'Missing conversion data in node implementation of ' + dataElementType );
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} else if ( constructor.converters !== null ) {
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var i,
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domElementTypes = constructor.converters.domElementTypes,
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toDomElement = constructor.converters.toDomElement,
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toDataElement = constructor.converters.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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* Responds to register events from the annotation factory.
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*
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* @method
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* @param {String} type Base annotation type
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* @param {Function} constructor Annotation constructor
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* @throws 'Missing conversion data in annotation implementation of {type}'
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*/
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ve.dm.Converter.prototype.onAnnotationRegister = function ( dataElementType, constructor ) {
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if ( constructor.converters === undefined ) {
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throw new Error( 'Missing conversion data in annotation implementation of ' + dataElementType );
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} else if ( constructor.converters !== null ) {
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var i,
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domElementTypes = constructor.converters.domElementTypes,
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toDomElement = constructor.converters.toDomElement,
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toDataAnnotation = constructor.converters.toDataAnnotation;
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// Registration
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this.annotations.toDomElement[dataElementType] = toDomElement;
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for ( i = 0; i < domElementTypes.length; i++ ) {
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this.annotations.toDataAnnotation[domElementTypes[i]] = toDataAnnotation;
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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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* NOTE: alienBlock and alienInline elements are not supported, if you pass them this function
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* will return false. (Opposite of District 9: no aliens allowed.)
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*
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* @method
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* @param {Object} dataElement Linear model element
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* @returns {HTMLElement|false} DOM element, or false if this element cannot be converted
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*/
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ve.dm.Converter.prototype.getDomElementFromDataElement = function ( dataElement ) {
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var key, domElement, dataElementAttributes,
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dataElementType = dataElement.type;
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if (
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// Aliens
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dataElementType === 'alienInline' || dataElementType === 'alienBlock' ||
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// Unsupported elements
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!( dataElementType in this.elements.toDomElement)
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) {
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return false;
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}
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domElement = this.elements.toDomElement[dataElementType]( 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/*' attributes and strip the 'html/' from the beginning of the name
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if ( key.indexOf( 'html/' ) === 0 ) {
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domElement.setAttribute( key.substr( 5 ), dataElementAttributes[key] );
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}
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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, after checking that
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* there is no data-mw-gc attribute.
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*
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* @method
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* @param {HTMLElement} domElement DOM element
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* @returns {Object|false} Linear model element, or false if this node cannot be converted
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*/
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ve.dm.Converter.prototype.getDataElementFromDomElement = function ( domElement ) {
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var dataElement, domElementAttributes, dataElementAttributes, domElementAttribute, i,
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domElementType = domElement.nodeName.toLowerCase();
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if (
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// Generated elements
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domElement.hasAttribute( 'data-mw-gc' ) ||
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// Unsupported elements
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!( domElementType in this.elements.toDataElement )
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) {
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return false;
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}
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dataElement = this.elements.toDataElement[domElementType]( domElementType, domElement );
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domElementAttributes = domElement.attributes;
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if ( domElementAttributes.length ) {
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dataElementAttributes = dataElement.attributes = dataElement.attributes || {};
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// Inlcude all attributes and prepend 'html/' 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/' + domElementAttribute.name] = domElementAttribute.value;
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}
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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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* @example 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|false} Annotation object, or false if this node is not an annotation
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*/
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ve.dm.Converter.prototype.getDataAnnotationFromDomElement = function ( domElement ) {
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var domElementType = domElement.nodeName.toLowerCase(),
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toDataAnnotation = this.annotations.toDataAnnotation[domElementType];
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if ( typeof toDataAnnotation === 'function' ) {
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return toDataAnnotation( domElementType, domElement );
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}
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return 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|false} HTML DOM node, or false if this annotation is not known
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*/
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ve.dm.Converter.prototype.getDomElementFromDataAnnotation = function ( dataAnnotation ) {
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var split = dataAnnotation.type.split( '/' ),
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baseType = split[0],
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subType = split.slice( 1 ).join( '/' ),
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toDomElement = this.annotations.toDomElement[baseType];
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if ( typeof toDomElement === 'function' ) {
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return toDomElement( subType, dataAnnotation );
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}
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return false;
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};
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/**
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* Convert an HTML DOM tree to a linear model.
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*
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* Do not use the annotations, dataElement and path parameters, they're used for internal
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* recursion only.
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*
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* @method
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* @param {HTMLElement} domElement Wrapper div containing the HTML to convert
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* @param {Array} [annotations] Array of annotations (objects) 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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* @returns {Array} Linear model data
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*/
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ve.dm.Converter.prototype.getDataFromDom = function ( domElement, annotations, dataElement, path, alreadyWrapped ) {
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function createAlien( domElement, isInline ) {
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var type = isInline ? 'alienInline' : 'alienBlock';
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return [
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{
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'type': type,
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'attributes': {
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'html': $( '<div>' ).append( $( domElement ).clone() ).html()
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}
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},
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{ 'type': '/' + type }
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];
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}
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// Fallback to defaults
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annotations = annotations || [];
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path = path || ['document'];
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var i, childDomElement, annotation, childDataElement, text, childTypes, matches, paragraph,
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wrapperElement = dataElement,
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data = [],
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branchType = path[path.length - 1],
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branchIsContent = ve.dm.nodeFactory.canNodeContainContent( branchType ),
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wrapping = false;
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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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// 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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// Detect generated content and wrap it in an alien node
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if ( childDomElement.hasAttribute( 'data-mw-gc' ) ) {
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// FIXME Parsoid outputs RDFa now, address this in API rewrite
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data = data.concat( createAlien( childDomElement, branchIsContent ) );
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break;
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}
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// Detect and handle annotated content
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annotation = this.getDataAnnotationFromDomElement( childDomElement );
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if ( annotation ) {
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// Start auto-wrapping of bare content
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if ( !wrapping && !alreadyWrapped && !branchIsContent ) {
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data.push( { 'type': 'paragraph' } );
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wrapping = true;
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}
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// Append child element data
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data = data.concat(
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this.getDataFromDom(
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childDomElement, annotations.concat( annotation ), undefined, path, wrapping || alreadyWrapped
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)
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);
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break;
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}
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// End auto-wrapping of bare content
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if ( wrapping ) {
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data.push( { 'type': '/paragraph' } );
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wrapping = false;
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}
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// Append child element data
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childDataElement = this.getDataElementFromDomElement( childDomElement );
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if ( childDataElement ) {
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data = data.concat(
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this.getDataFromDom(
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childDomElement,
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[],
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childDataElement,
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path.concat( childDataElement.type ),
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wrapping || alreadyWrapped
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)
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);
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break;
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}
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// We don't know what this is, fall back to alien
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data = data.concat( createAlien( childDomElement, branchIsContent ) );
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break;
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case Node.TEXT_NODE:
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// HACK: strip trailing newline in <li> tags. Workaround for a Parsoid bug
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// TODO kill this in favor of the fringe whitespace preservation
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// code below
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text = childDomElement.data;
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if ( domElement.nodeName.toLowerCase() === 'li' ) {
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text = text.replace( /\n$/, '' );
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}
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if ( !branchIsContent ) {
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// If it's bare content, strip leading and trailing newlines
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// FIXME these newlines should be preserved somehow
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text = text.replace( /^\n+/, '' ).replace( /\n+$/, '' );
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}
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if ( text === '' ) {
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// Don't produce an empty text node or an empty paragraph
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break;
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}
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// Start auto-wrapping of bare content
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if ( !wrapping && !alreadyWrapped && !branchIsContent ) {
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paragraph = { 'type': 'paragraph' };
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data.push( paragraph );
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wrapping = true;
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wrapperElement = paragraph;
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}
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// Strip leading and trailing whitespace
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// but only in non-annotation nodes
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if ( annotations.length === 0 && i === 0 && wrapperElement ) {
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// Strip leading whitespace from the first child
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matches = text.match( /^\s+/ );
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if ( matches && matches[0] !== '' ) {
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if ( !wrapperElement.fringeWhitespace ) {
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wrapperElement.fringeWhitespace = {};
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}
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wrapperElement.fringeWhitespace.innerPre = matches[0];
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text = text.substring( matches[0].length );
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}
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}
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if (
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annotations.length === 0 &&
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i === domElement.childNodes.length - 1 &&
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wrapperElement
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) {
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// Strip trailing whitespace from the last child
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matches = text.match( /\s+$/ );
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if ( matches && matches[0] !== '' ) {
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if ( !wrapperElement.fringeWhitespace ) {
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wrapperElement.fringeWhitespace = {};
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}
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wrapperElement.fringeWhitespace.innerPost = matches[0];
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text = text.substring( 0,
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text.length - matches[0].length );
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}
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}
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// Annotate the text and output it
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data = data.concat(
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ve.dm.Converter.getDataContentFromText( text, annotations )
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);
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break;
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case Node.COMMENT_NODE:
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// TODO: Preserve comments by inserting them into the linear model too
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// Could use placeholders for this too, although they'd need to be
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// inline in certain cases
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break;
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}
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}
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// End auto-wrapping of bare content
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if ( wrapping ) {
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data.push( { 'type': '/paragraph' } );
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}
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// If we're closing a node that doesn't have any children, but could contain a paragraph,
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// add a paragraph. This prevents things like empty list items
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childTypes = ve.dm.nodeFactory.getChildNodeTypes( branchType );
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if ( branchType !== 'paragraph' && dataElement && data[data.length - 1] === dataElement &&
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!wrapping && !ve.dm.nodeFactory.canNodeContainContent( branchType ) &&
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!ve.dm.nodeFactory.isNodeContent( branchType ) &&
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( childTypes === null || ve.indexOf( 'paragraph', childTypes ) !== -1 )
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) {
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data.push( { 'type': 'paragraph' } );
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data.push( { 'type': '/paragraph' } );
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}
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// Close element
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if ( dataElement ) {
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data.push( { 'type': '/' + dataElement.type } );
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}
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// Don't return an empty document
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if ( branchType === 'document' && data.length === 0 ) {
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return [{ 'type': 'paragraph' }, { 'type': '/paragraph' }];
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}
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return data;
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};
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/**
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* Convert linear model data to an HTML DOM
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*
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* @method
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* @param {Array} data Linear model data
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* @returns {HTMLElement} Wrapper div containing the resulting HTML
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*/
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ve.dm.Converter.prototype.getDomFromData = function ( data ) {
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var text, i, annotations, hash, annotationElement, done, dataElement, wrapper,
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childDomElement, pre, post,
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container = document.createElement( 'div' ),
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domElement = container,
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annotationStack = {}; // { hash: DOMnode }
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for ( i = 0; i < data.length; i++ ) {
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if ( typeof data[i] === 'string' ) {
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// Text
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text = '';
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// Continue forward as far as the plain text goes
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while ( typeof data[i] === 'string' ) {
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text += data[i];
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i++;
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}
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// i points to the first non-text thing, go back one so we don't skip this later
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i--;
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// Add text
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domElement.appendChild( document.createTextNode( text ) );
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} else if (
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ve.isArray( data[i] ) ||
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(
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data[i].annotations !== undefined &&
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ve.dm.nodeFactory.isNodeContent( data[i].type )
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)
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) {
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// Annotated text
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text = '';
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while (
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ve.isArray( data[i] ) ||
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(
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data[i].annotations !== undefined &&
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ve.dm.nodeFactory.isNodeContent( data[i].type )
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)
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) {
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annotations = data[i].annotations || data[i][1];
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// Check for closed annotations
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for ( hash in annotationStack ) {
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if ( !( hash in annotations ) ) {
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// It's closed
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// Traverse up until we hit the node we need to close, and then
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// traverse up one more time to close that node
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done = false;
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while ( !done ) {
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done = domElement === annotationStack[hash];
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// Remove the annotation from the stack
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delete annotationStack[domElement.veAnnotationHash];
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// Remove the temporary veAnnotationHash property
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delete domElement.veAnnotationHash;
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// Add text if needed
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if ( text.length > 0 ) {
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domElement.appendChild( document.createTextNode( text ) );
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text = '';
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}
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// Traverse up
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domElement = domElement.parentNode;
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}
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}
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}
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// Check for opened annotations
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for ( hash in annotations ) {
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if ( !( hash in annotationStack ) ) {
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// It's opened
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annotationElement = this.getDomElementFromDataAnnotation( annotations[hash] );
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// Temporary property, will remove this when closing the annotation
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annotationElement.veAnnotationHash = hash;
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// Add to the annotation stack
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annotationStack[hash] = annotationElement;
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// Add text if needed
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if ( text.length > 0 ) {
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domElement.appendChild( document.createTextNode( text ) );
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text = '';
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}
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// Attach new node and descend into it
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domElement.appendChild( annotationElement );
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domElement = annotationElement;
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}
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}
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if ( data[i].annotations === undefined ) {
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text += data[i][0];
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} else {
|
|
// Add text if needed
|
|
if ( text.length > 0 ) {
|
|
domElement.appendChild( document.createTextNode( text ) );
|
|
text = '';
|
|
}
|
|
// Insert the element
|
|
domElement.appendChild( this.getDomElementFromDataElement( data[i] ) );
|
|
// 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( document.createTextNode( text ) );
|
|
text = '';
|
|
}
|
|
// Close any remaining annotation nodes
|
|
while ( domElement.veAnnotationHash !== undefined ) {
|
|
delete annotationStack[domElement.veAnnotationHash];
|
|
delete domElement.veAnnotationHash;
|
|
domElement = domElement.parentNode;
|
|
}
|
|
} else if ( data[i].type !== undefined ) {
|
|
dataElement = data[i];
|
|
// Element
|
|
if ( dataElement.type === 'alienBlock' || dataElement.type === 'alienInline' ) {
|
|
// Create nodes from source
|
|
wrapper = document.createElement( 'div' );
|
|
wrapper.innerHTML = dataElement.attributes.html;
|
|
// Add element - adds all child elements, but there really should only be 1
|
|
while ( wrapper.firstChild ) {
|
|
domElement.appendChild( wrapper.firstChild );
|
|
}
|
|
// Make sure the alien closing is skipped
|
|
i++;
|
|
} else if ( dataElement.type.charAt( 0 ) === '/' ) {
|
|
// Process whitespace
|
|
if ( domElement.veWhitespace ) {
|
|
pre = domElement.veWhitespace.innerPre;
|
|
if ( pre ) {
|
|
if ( domElement.firstChild.nodeType === 3 ) {
|
|
// First child is a TextNode, prepend to it
|
|
domElement.firstChild.insertData( 0, pre );
|
|
} else {
|
|
// Prepend a TextNode
|
|
domElement.insertBefore(
|
|
document.createTextNode( pre ),
|
|
domElement.firstChild
|
|
);
|
|
}
|
|
}
|
|
post = domElement.veWhitespace.innerPost;
|
|
if ( post ) {
|
|
if ( domElement.lastChild.nodeType === 3 ) {
|
|
// Last child is a TextNode, append to it
|
|
domElement.lastChild.appendData( post );
|
|
} else {
|
|
// Append a TextNode
|
|
domElement.appendChild(
|
|
document.createTextNode( post )
|
|
);
|
|
}
|
|
}
|
|
delete domElement.veWhitespace;
|
|
}
|
|
// Ascend to parent node
|
|
domElement = domElement.parentNode;
|
|
} else {
|
|
// Create node from data
|
|
childDomElement = this.getDomElementFromDataElement( dataElement );
|
|
// Add whitespace info
|
|
if ( dataElement.fringeWhitespace ) {
|
|
childDomElement.veWhitespace = dataElement.fringeWhitespace;
|
|
}
|
|
// Add element
|
|
domElement.appendChild( childDomElement );
|
|
// Descend into child node
|
|
domElement = childDomElement;
|
|
}
|
|
}
|
|
}
|
|
return container;
|
|
};
|
|
|
|
/* Initialization */
|
|
|
|
ve.dm.converter = new ve.dm.Converter( ve.dm.nodeFactory, ve.dm.annotationFactory );
|