mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-15 18:39:52 +00:00
83a592f312
This was broken, especially in wrappers. Changed the wrapping algorithm so that meta items are placed outside wrappers if possible. On the left-hand side, this is already the case: we don't open wrappers for meta items. On the right-hand side, this is accomplished by buffering the meta items and only inserting them when we encounter either real text (not whitespace) or the end of the wrapper. If we're interrupted by real text, we insert the meta items with the unmodified whitespace. If we're interrupted by the end of the wrapper, we insert the meta items outside of the wrapper with whitespace stripped. Internally, this is done by stripping the whitespace into the whitespace[0] of the meta item to its right. Then when we output the meta items, we either decide to 'restore' the whitespace, or to 'fixup' by also setting whitespace[3] on the element before the whitespace. Change-Id: Ibeea2a9906c4aae9fe6d284613edd6ec853ca5e7
1169 lines
40 KiB
JavaScript
1169 lines
40 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.ModelRegistry} modelRegistry
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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( modelRegistry, nodeFactory, annotationFactory, metaItemFactory ) {
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// Properties
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this.modelRegistry = modelRegistry;
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this.nodeFactory = nodeFactory;
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this.annotationFactory = annotationFactory;
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this.metaItemFactory = metaItemFactory;
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this.doc = null;
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this.store = null;
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this.contextStack = null;
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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.dm.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 i, len, characters = text.split( '' );
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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, len = characters.length; i < len; i++ ) {
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// Just store the annotations' indexes from the index-value store
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characters[i] = [characters[i], annotations.getIndexes().slice()];
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}
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return characters;
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};
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/**
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* Utility function for annotation rendering. Transforms one set of annotations into another
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* by opening and closing annotations. Each time an annotation is opened or closed, the associated
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* callback is called with the annotation passed as a parameter.
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*
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* Note that currentSet will be modified, and will be equal to targetSet once this function returns.
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*
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* @static
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* @param {ve.dm.AnnotationSet} currentSet The set of annotations currently opened. Will be modified.
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* @param {ve.dm.AnnotationSet} targetSet The set of annotations we want to have.
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* @param {Function} open Callback called when an annotation is opened. Passed a ve.dm.Annotation.
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* @param {Function} close Callback called when an annotation is closed. Passed a ve.dm.Annotation.
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*/
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ve.dm.Converter.openAndCloseAnnotations = function ( currentSet, targetSet, open, close ) {
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var i, len, arr, annotation, startClosingAt;
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// Close annotations as needed
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// Go through annotationStack from bottom to top (low to high),
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// and find the first annotation that's not in annotations.
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arr = currentSet.get();
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for ( i = 0, len = arr.length; i < len; i++ ) {
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annotation = arr[i];
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if ( !targetSet.contains( annotation ) ) {
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startClosingAt = i;
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break;
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}
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}
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if ( startClosingAt !== undefined ) {
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// Close all annotations from top to bottom (high to low)
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// until we reach startClosingAt
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for ( i = currentSet.getLength() - 1; i >= startClosingAt; i-- ) {
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close( arr[i] );
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// Remove from currentClone
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currentSet.removeAt( i );
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}
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}
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// Open annotations as needed
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arr = targetSet.get();
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for ( i = 0, len = arr.length; i < len; i++ ) {
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annotation = arr[i];
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if ( !currentSet.contains( annotation ) ) {
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open( annotation );
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// Add to currentClone
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currentSet.push( annotation );
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}
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}
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};
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/* Methods */
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/**
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* Check whether this converter instance is currently inside a getDataFromDom() conversion.
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*
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* @method
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* @returns {boolean} Whether we're converting
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*/
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ve.dm.Converter.prototype.isConverting = function () {
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return this.contextStack !== null;
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};
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/**
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* Get the IndexValueStore used for the current conversion.
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*
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* @method
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* @returns {ve.dm.IndexValueStore|null} Current store, or null if not converting
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*/
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ve.dm.Converter.prototype.getStore = function () {
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return this.store;
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};
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/**
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* Get the HTML document currently being converted
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*
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* @method
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* @returns {HTMLDocument|null} HTML document being converted, or null if not converting
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*/
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ve.dm.Converter.prototype.getHtmlDocument = function () {
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return this.doc;
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};
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/**
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* Get the current conversion context. This is the recursion state of getDataFromDomRecursion().
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*
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* @method
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* @returns {Object|null} Context object, or null if not converting
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*/
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ve.dm.Converter.prototype.getCurrentContext = function () {
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return this.contextStack === null ? null : this.contextStack[this.contextStack.length - 1];
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};
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/**
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* Get the annotations currently being applied by the converter. Note that this is specific to
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* the current recursion level.
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*
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* @method
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* @returns {ve.dm.AnnotationSet|null} Annotation set, or null if not converting
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*/
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ve.dm.Converter.prototype.getActiveAnnotations = function () {
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var context = this.getCurrentContext();
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return context ? context.annotations : null;
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};
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/**
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* Whether the converter is currently expecting content. Note that this is specific to the current
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* recursion level.
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*
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* @method
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* @returns {boolean|null} Boolean indicating whether content is expected, or null if not converting
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*/
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ve.dm.Converter.prototype.isExpectingContent = function () {
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var context = this.getCurrentContext();
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return context ? context.expectingContent : null;
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};
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/**
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* Whether the conversion is currently inside a wrapper paragraph generated by the converter.
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* Note that this is specific to the current recursion level.
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*
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* @method
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* @returns {boolean|null} Boolean indicating whether we're wrapping, or null if not converting
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*/
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ve.dm.Converter.prototype.isInWrapper = function () {
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var context = this.getCurrentContext();
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return context ? context.inWrapper : null;
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};
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/**
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* Whether the active wrapper can be closed. Note that this is specific to the current recursion
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* level. If there is no active wrapper, this returns false.
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*
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* @method
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* @returns {boolean|null} Boolean indicating whether the wrapper can be closed, or null if not converting
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*/
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ve.dm.Converter.prototype.canCloseWrapper = function () {
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var context = this.getCurrentContext();
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return context ? context.canCloseWrapper : null;
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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 toDomElements function registered for the element type.
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*
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* @method
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* @param {Object|Array} dataElement Linear model element or data slice
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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.getDomElementsFromDataElement = function ( dataElements, doc ) {
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var domElements, dataElementAttributes, key, matches,
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dataElement = ve.isArray( dataElements ) ? dataElements[0] : dataElements,
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nodeClass = this.modelRegistry.lookup( dataElement.type );
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if ( !nodeClass ) {
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throw new Error( 'Attempting to convert unknown data element type ' + dataElement.type );
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}
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domElements = nodeClass.static.toDomElements( dataElements, doc, this );
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if ( !domElements || !domElements.length ) {
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throw new Error( 'toDomElements() failed to return an array when converting element of type ' + dataElement.type );
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}
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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/i/*' attributes and strip the 'html/i/' from the beginning of the name
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/*jshint regexp:false */
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matches = key.match( /^html\/(\d+)\/(.*)$/ );
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if ( matches ) {
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if ( domElements[matches[1]] && !domElements[matches[1]].hasAttribute( matches[2] ) ) {
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domElements[matches[1]].setAttribute( matches[2], dataElementAttributes[key] );
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}
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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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domElements[0].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 domElements;
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};
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/**
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* Create a data element from a DOM element.
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* @param {ve.dm.Model} modelClass Model class to use for conversion
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* @param {HTMLElement[]} domElements DOM elements to convert
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* @returns {Object|Array|null} Data element or array of linear model data, or null to alienate
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*/
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ve.dm.Converter.prototype.createDataElements = function ( modelClass, domElements ) {
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var i, j, dataElements, dataElementAttributes, domElementAttributes,
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domElementAttribute;
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dataElements = modelClass.static.toDataElement( domElements, this );
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if ( !dataElements ) {
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return null;
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}
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if ( !ve.isArray( dataElements ) ) {
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dataElements = [ dataElements ];
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}
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if ( dataElements[0] && modelClass.static.storeHtmlAttributes ) {
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for ( i = 0; i < domElements.length; i++ ) {
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domElementAttributes = domElements[i].attributes;
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if ( domElementAttributes && domElementAttributes.length ) {
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dataElementAttributes = dataElements[0].attributes = dataElements[0].attributes || {};
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// Include all attributes and prepend 'html/i/' to each attribute name
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for ( j = 0; j < domElementAttributes.length; j++ ) {
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domElementAttribute = domElementAttributes[j];
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dataElementAttributes['html/' + i + '/' + domElementAttribute.name] =
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domElementAttribute.value;
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}
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}
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}
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}
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return dataElements;
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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 {ve.dm.IndexValueStore} store Index-value store
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* @param {HTMLDocument} doc HTML document to convert
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* @returns {ve.dm.ElementLinearData} Linear model data
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*/
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ve.dm.Converter.prototype.getDataFromDom = function ( store, doc ) {
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var result;
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// Set up the converter state
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this.doc = doc;
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this.store = store;
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this.contextStack = [];
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// Possibly do things with doc and the head in the future
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result = new ve.dm.ElementLinearData(
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store,
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this.getDataFromDomRecursion( doc.body )
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);
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// Clear the state
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this.doc = null;
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this.store = null;
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this.contextStack = null;
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return result;
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};
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/**
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* Recursive implementation of getDataFromDom(). For internal use, and for use in
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* ve.dm.Model.static.toDataElement() implementations.
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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 {Object} [wrapperElement] Data element to wrap the returned data in
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* @param {ve.dm.AnnotationSet} [annotationSet] Override the set of annotations to use
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* @returns {Array} Linear model data
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*/
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ve.dm.Converter.prototype.getDataFromDomRecursion = function ( domElement, wrapperElement, annotationSet ) {
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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 outputWrappedMetaItems( whitespaceTreatment ) {
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var i, len, prev = wrappingParagraph;
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for ( i = 0, len = wrappedMetaItems.length; i < len; i++ ) {
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if ( wrappedMetaItems[i].type && wrappedMetaItems[i].type.charAt( 0 ) !== '/' ) {
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if ( wrappedMetaItems[i].internal && wrappedMetaItems[i].internal.whitespace ) {
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if ( whitespaceTreatment === 'restore' ) {
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data = data.concat( ve.dm.Converter.getDataContentFromText(
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wrappedMetaItems[i].internal.whitespace[0], context.annotations
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) );
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delete wrappedMetaItems[i].internal;
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} else if ( whitespaceTreatment === 'fixup' ) {
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addWhitespace( prev, 3, wrappedMetaItems[i].internal.whitespace[0] );
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}
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}
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prev = wrappedMetaItems[i];
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}
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data.push( wrappedMetaItems[i] );
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}
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wrappedMetaItems = [];
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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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outputWrappedMetaItems( 'fixup' );
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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 = context.originallyExpectingContent;
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}
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function getAboutGroup( el ) {
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var textNodes = [], aboutGroup = [ el ], elAbout, node;
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if ( !el.getAttribute || el.getAttribute( 'about' ) === null ) {
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return aboutGroup;
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}
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elAbout = el.getAttribute( 'about' );
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for ( node = el.nextSibling; node; node = node.nextSibling ) {
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if ( !node.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( node );
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continue;
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}
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if ( node.getAttribute( 'about' ) === elAbout ) {
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aboutGroup = aboutGroup.concat( textNodes );
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textNodes = [];
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aboutGroup.push( node );
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} else {
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break;
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}
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}
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return aboutGroup;
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}
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var i, childDomElement, childDomElements, childDataElements, text, childTypes, matches,
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wrappingParagraph, prevElement, childAnnotations, modelName, modelClass,
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annotation, childIsContent, aboutGroup,
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data = [],
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nextWhitespace = '',
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wrappedWhitespace = '',
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wrappedWhitespaceIndex,
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wrappedMetaItems = [],
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context = {},
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prevContext = this.contextStack.length ? this.contextStack[this.contextStack.length - 1] : null;
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context.annotations = annotationSet || (
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prevContext ? prevContext.annotations.clone() : new ve.dm.AnnotationSet( this.store )
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);
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context.branchType = wrapperElement ? wrapperElement.type : (
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prevContext ? prevContext.branchType : 'document'
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);
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context.branchHasContent = this.nodeFactory.canNodeContainContent( context.branchType );
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context.originallyExpectingContent = context.branchHasContent || !context.annotations.isEmpty();
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context.expectingContent = context.originallyExpectingContent;
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context.inWrapper = prevContext ? prevContext.inWrapper : false;
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context.canCloseWrapper = false;
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this.contextStack.push( context );
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// Open element
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if ( wrapperElement ) {
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data.push( wrapperElement );
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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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modelName = this.modelRegistry.matchElement( childDomElement );
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modelClass = this.modelRegistry.lookup( modelName ) || ve.dm.AlienNode;
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if ( modelClass.prototype instanceof ve.dm.Annotation ) {
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childDataElements = this.createDataElements( modelClass, [ childDomElement ] );
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} else {
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// Node or meta item
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aboutGroup = getAboutGroup( childDomElement );
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childDomElements = modelClass.static.enableAboutGrouping ?
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aboutGroup : [ childDomElement ];
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childDataElements = this.createDataElements( modelClass, childDomElements );
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}
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if ( !childDataElements ) {
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// Alienate
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modelClass = ve.dm.AlienNode;
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childDomElements = modelClass.static.enableAboutGrouping ?
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aboutGroup : [ childDomElement ];
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childDataElements = this.createDataElement( modelClass, childDomElements );
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} else {
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// Update modelClass to reflect the type we got back
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modelClass = this.modelRegistry.lookup( childDataElements[0].type );
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}
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// Now take the appropriate action based on that
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|
if ( modelClass.prototype instanceof ve.dm.Annotation ) {
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annotation = this.annotationFactory.create( modelName, childDataElements[0] );
|
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// Start wrapping if needed
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|
if ( !context.inWrapper && !context.expectingContent ) {
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startWrapping();
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prevElement = wrappingParagraph;
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}
|
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// Append child element data
|
|
childAnnotations = context.annotations.clone();
|
|
childAnnotations.push( annotation );
|
|
data = data.concat(
|
|
this.getDataFromDomRecursion( childDomElement, undefined, childAnnotations )
|
|
);
|
|
// Clear wrapped whitespace
|
|
wrappedWhitespace = '';
|
|
} else {
|
|
// Node or meta item
|
|
if ( modelClass.prototype instanceof ve.dm.MetaItem ) {
|
|
// No additional processing needed
|
|
// Write to data and continue
|
|
if ( childDataElements.length === 1 ) {
|
|
childDataElements.push( { 'type': '/' + childDataElements[0].type } );
|
|
}
|
|
if ( context.inWrapper ) {
|
|
wrappedMetaItems = wrappedMetaItems.concat( childDataElements );
|
|
if ( wrappedWhitespace !== '' ) {
|
|
data.splice( wrappedWhitespaceIndex, wrappedWhitespace.length );
|
|
addWhitespace( childDataElements[0], 0, wrappedWhitespace );
|
|
nextWhitespace = wrappedWhitespace;
|
|
wrappedWhitespace = '';
|
|
}
|
|
} else {
|
|
data = data.concat( childDataElements );
|
|
processNextWhitespace( childDataElements[0] );
|
|
prevElement = childDataElements[0];
|
|
}
|
|
break;
|
|
}
|
|
|
|
childIsContent = this.nodeFactory.isNodeContent( childDataElements[0].type );
|
|
|
|
// If childIsContent isn't what we expect, adjust
|
|
if ( !context.expectingContent && childIsContent ) {
|
|
startWrapping();
|
|
prevElement = wrappingParagraph;
|
|
} else if ( context.expectingContent && !childIsContent ) {
|
|
if ( context.inWrapper && context.canCloseWrapper ) {
|
|
stopWrapping();
|
|
} else {
|
|
// Alienate
|
|
modelClass = ve.dm.AlienNode;
|
|
childDomElements = modelClass.static.enableAboutGrouping ?
|
|
aboutGroup : [ childDomElement ];
|
|
childDataElements = this.createDataElements( modelClass, childDomElements );
|
|
childIsContent = this.nodeFactory.isNodeContent( childDataElements[0].type );
|
|
}
|
|
}
|
|
|
|
// Annotate child
|
|
if ( childIsContent && !context.annotations.isEmpty() ) {
|
|
childDataElements[0].annotations = context.annotations.getIndexes().slice();
|
|
}
|
|
|
|
// Output child and process children if needed
|
|
if (
|
|
childDataElements.length === 1 &&
|
|
childDomElements.length === 1 &&
|
|
this.nodeFactory.canNodeHaveChildren( childDataElements[0].type ) &&
|
|
!this.nodeFactory.doesNodeHandleOwnChildren( childDataElements[0].type )
|
|
) {
|
|
// Recursion
|
|
// Opening and closing elements are added by the recursion too
|
|
data = data.concat(
|
|
this.getDataFromDomRecursion( childDomElement, childDataElements[0],
|
|
new ve.dm.AnnotationSet( this.store )
|
|
)
|
|
);
|
|
} else {
|
|
if ( childDataElements.length === 1 ) {
|
|
childDataElements.push( { 'type': '/' + childDataElements[0].type } );
|
|
}
|
|
// Write childDataElements directly
|
|
data = data.concat( childDataElements );
|
|
}
|
|
processNextWhitespace( childDataElements[0] );
|
|
prevElement = childDataElements[0];
|
|
|
|
// In case we consumed multiple childDomElements, adjust i accordingly
|
|
i += childDomElements.length - 1;
|
|
}
|
|
break;
|
|
case Node.TEXT_NODE:
|
|
text = childDomElement.data;
|
|
if ( text === '' ) {
|
|
// Empty text node?!?
|
|
break;
|
|
}
|
|
if ( !context.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, context.annotations )
|
|
);
|
|
} else {
|
|
// We're not in wrapping mode, store this whitespace
|
|
if ( !prevElement ) {
|
|
if ( wrapperElement ) {
|
|
// First child, store as inner
|
|
// whitespace in the parent
|
|
addWhitespace( wrapperElement, 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 = '';
|
|
outputWrappedMetaItems( 'restore' );
|
|
}
|
|
// 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 ( wrapperElement ) {
|
|
// First child, store as inner
|
|
// whitespace in the parent
|
|
addWhitespace( wrapperElement, 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 {
|
|
outputWrappedMetaItems( 'restore' );
|
|
// We were already wrapping in a paragraph,
|
|
// so the leading whitespace must be output
|
|
data = data.concat(
|
|
ve.dm.Converter.getDataContentFromText( matches[1], context.annotations )
|
|
);
|
|
}
|
|
// Output the text sans whitespace
|
|
data = data.concat(
|
|
ve.dm.Converter.getDataContentFromText( matches[2], context.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, context.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 (
|
|
context.annotations.isEmpty() && i === 0 && wrapperElement &&
|
|
!this.nodeFactory.doesNodeHaveSignificantWhitespace( wrapperElement.type )
|
|
) {
|
|
// Strip leading whitespace from the first child
|
|
matches = text.match( /^\s+/ );
|
|
if ( matches && matches[0] !== '' ) {
|
|
addWhitespace( wrapperElement, 1, matches[0] );
|
|
text = text.substring( matches[0].length );
|
|
}
|
|
}
|
|
if (
|
|
context.annotations.isEmpty() &&
|
|
i === domElement.childNodes.length - 1 &&
|
|
wrapperElement &&
|
|
!this.nodeFactory.doesNodeHaveSignificantWhitespace( wrapperElement.type )
|
|
) {
|
|
// Strip trailing whitespace from the last child
|
|
matches = text.match( /\s+$/ );
|
|
if ( matches && matches[0] !== '' ) {
|
|
addWhitespace( wrapperElement, 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, context.annotations )
|
|
);
|
|
break;
|
|
case Node.COMMENT_NODE:
|
|
// TODO treat this as a node with nodeName #comment, removes code duplication
|
|
childDataElements = [
|
|
{
|
|
'type': 'alienMeta',
|
|
'attributes': {
|
|
'style': 'comment',
|
|
'text': childDomElement.data
|
|
}
|
|
},
|
|
{ 'type': '/alienMeta' }
|
|
];
|
|
if ( context.inWrapper ) {
|
|
wrappedMetaItems = wrappedMetaItems.concat( childDataElements );
|
|
if ( wrappedWhitespace !== '' ) {
|
|
data.splice( wrappedWhitespaceIndex, wrappedWhitespace.length );
|
|
addWhitespace( childDataElements[0], 0, wrappedWhitespace );
|
|
nextWhitespace = wrappedWhitespace;
|
|
wrappedWhitespace = '';
|
|
}
|
|
} else {
|
|
data = data.concat( childDataElements );
|
|
processNextWhitespace( childDataElements[0] );
|
|
prevElement = childDataElements[0];
|
|
}
|
|
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( context.branchType );
|
|
if ( context.branchType !== 'paragraph' && wrapperElement && data[data.length - 1] === wrapperElement &&
|
|
!context.inWrapper && !this.nodeFactory.canNodeContainContent( context.branchType ) &&
|
|
!this.nodeFactory.isNodeContent( context.branchType ) &&
|
|
( childTypes === null || ve.indexOf( 'paragraph', childTypes ) !== -1 )
|
|
) {
|
|
data.push( { 'type': 'paragraph', 'internal': { 'generated': 'empty' } } );
|
|
data.push( { 'type': '/paragraph' } );
|
|
}
|
|
|
|
// Close element
|
|
if ( wrapperElement ) {
|
|
data.push( { 'type': '/' + wrapperElement.type } );
|
|
// Add the whitespace after the last child to the parent as innerPost
|
|
if ( nextWhitespace !== '' ) {
|
|
addWhitespace( wrapperElement, 2, nextWhitespace );
|
|
nextWhitespace = '';
|
|
}
|
|
}
|
|
// Don't return an empty document
|
|
if ( context.branchType === 'document' && data.length === 0 ) {
|
|
return [
|
|
{ 'type': 'paragraph', 'internal': { 'generated': 'empty' } },
|
|
{ 'type': '/paragraph' }
|
|
];
|
|
}
|
|
|
|
this.contextStack.pop();
|
|
return data;
|
|
};
|
|
|
|
/**
|
|
* Convert linear model data to an HTML DOM
|
|
*
|
|
* @method
|
|
* @param {ve.dm.IndexValueStore} store Index-value store
|
|
* @param {Array} data Linear model data
|
|
* @returns {HTMLDocument} Document containing the resulting HTML
|
|
*/
|
|
ve.dm.Converter.prototype.getDomFromData = function ( store, data ) {
|
|
var doc = ve.createDocumentFromHTML( '' );
|
|
this.getDomSubtreeFromData( store, data, doc.body );
|
|
return doc;
|
|
};
|
|
|
|
/**
|
|
* Convert linear model data to an HTML DOM subtree and add it to a container element.
|
|
*
|
|
* @param {ve.dm.IndexValueStore} store Index-value store
|
|
* @param {Array} data Linear model data
|
|
* @param {HTMLElement} container DOM element to add the generated elements to. Should be empty.
|
|
* @throws Unbalanced data: looking for closing /type
|
|
*/
|
|
ve.dm.Converter.prototype.getDomSubtreeFromData = function ( store, data, container ) {
|
|
var text, i, j, k, annotations, annotationElement, dataElement, dataElementOrSlice,
|
|
childDomElements, pre, ours, theirs, parentDomElement, lastChild,
|
|
isContentNode, changed, parentChanged, sibling, previousSiblings, doUnwrap, textNode,
|
|
conv = this,
|
|
doc = container.ownerDocument,
|
|
domElement = container,
|
|
annotationStack = new ve.dm.AnnotationSet( store );
|
|
|
|
function openAnnotation( annotation ) {
|
|
// Add text if needed
|
|
if ( text.length > 0 ) {
|
|
domElement.appendChild( doc.createTextNode( text ) );
|
|
text = '';
|
|
}
|
|
// Create new node and descend into it
|
|
annotationElement = conv.getDomElementsFromDataElement(
|
|
annotation.getElement(), doc
|
|
)[0];
|
|
domElement.appendChild( annotationElement );
|
|
domElement = annotationElement;
|
|
}
|
|
|
|
function closeAnnotation() {
|
|
// Add text if needed
|
|
if ( text.length > 0 ) {
|
|
domElement.appendChild( doc.createTextNode( text ) );
|
|
text = '';
|
|
}
|
|
// Traverse up
|
|
domElement = domElement.parentNode;
|
|
}
|
|
|
|
function getDataElementOrSlice() {
|
|
var dataSlice, j, depth, handlesOwn = false;
|
|
try {
|
|
handlesOwn = ve.dm.nodeFactory.doesNodeHandleOwnChildren( data[i].type );
|
|
} catch ( e ) {}
|
|
|
|
if ( handlesOwn ) {
|
|
j = i + 1;
|
|
depth = 1;
|
|
while ( j < data.length && depth > 0 ) {
|
|
if ( data[j].type ) {
|
|
depth += data[j].type.charAt( 0 ) === '/' ? -1 : 1;
|
|
}
|
|
j++;
|
|
}
|
|
if ( j >= data.length ) {
|
|
throw new Error( 'Unbalanced data: looking for closing /' +
|
|
dataElement.type );
|
|
}
|
|
dataSlice = data.slice( i, j + 1 );
|
|
} else {
|
|
dataSlice = data[i];
|
|
}
|
|
return dataSlice;
|
|
}
|
|
|
|
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.metaItemFactory.lookup( data[i].type ) ||
|
|
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 = new ve.dm.AnnotationSet(
|
|
store, data[i].annotations || data[i][1]
|
|
);
|
|
ve.dm.Converter.openAndCloseAnnotations( annotationStack, annotations,
|
|
openAnnotation, closeAnnotation
|
|
);
|
|
|
|
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 elements
|
|
dataElementOrSlice = getDataElementOrSlice();
|
|
childDomElements = this.getDomElementsFromDataElement( dataElementOrSlice, doc );
|
|
for ( j = 0; j < childDomElements.length; j++ ) {
|
|
domElement.appendChild( childDomElements[j] );
|
|
}
|
|
if ( ve.isArray( dataElementOrSlice ) ) {
|
|
i += dataElementOrSlice.length - 1;
|
|
} else {
|
|
i++; // Skip the closing
|
|
}
|
|
}
|
|
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.dm.AnnotationSet( store );
|
|
} else if ( data[i].type !== undefined ) {
|
|
dataElement = data[i];
|
|
// Element
|
|
if ( dataElement.type.charAt( 0 ) === '/' ) {
|
|
parentDomElement = domElement.parentNode;
|
|
isContentNode = !this.metaItemFactory.lookup( data[i].type.substr( 1 ) ) &&
|
|
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 === Node.TEXT_NODE
|
|
) {
|
|
// First child is a TextNode, prepend to it
|
|
domElement.firstChild.insertData( 0, pre );
|
|
} else {
|
|
// Prepend a TextNode
|
|
textNode = doc.createTextNode( pre );
|
|
textNode.veIsWhitespace = true;
|
|
domElement.insertBefore(
|
|
textNode,
|
|
domElement.firstChild
|
|
);
|
|
}
|
|
}
|
|
lastChild = domElement.veInternal.childDomElements ?
|
|
domElement.veInternal
|
|
.childDomElements[domElement.veInternal.childDomElements.length - 1]
|
|
.lastChild :
|
|
domElement.lastChild;
|
|
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 ( lastChild && lastChild.nodeType === Node.TEXT_NODE ) {
|
|
// Last child is a TextNode, append to it
|
|
domElement.lastChild.appendData( ours );
|
|
} else {
|
|
// Append a TextNode
|
|
textNode = doc.createTextNode( ours );
|
|
textNode.veIsWhitespace = true;
|
|
domElement.appendChild(
|
|
textNode
|
|
);
|
|
}
|
|
}
|
|
// 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
|
|
|
|
// Logic to unwrap empty & wrapper nodes.
|
|
// 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.
|
|
doUnwrap = false;
|
|
if ( domElement.veInternal ) {
|
|
switch ( domElement.veInternal.generated ) {
|
|
case 'empty':
|
|
// 'empty' elements - first ensure they are actually empty
|
|
if ( domElement.childNodes.length === 0 && (
|
|
// then check that we are the last child
|
|
// before unwrapping (and therefore destroying)
|
|
i === data.length - 1 ||
|
|
data[i + 1].type.charAt(0) === '/'
|
|
)
|
|
) {
|
|
doUnwrap = true;
|
|
}
|
|
break;
|
|
case 'wrapper':
|
|
// 'wrapper' elements - ensure there is a block level
|
|
// element between this element and the previous sibling
|
|
// wrapper or parent node
|
|
doUnwrap = true;
|
|
previousSiblings = domElement.parentElement.childNodes;
|
|
// Note: previousSiblings includes the current element
|
|
// so we only go up to length - 2
|
|
for ( j = previousSiblings.length - 2; j >= 0; j-- ) {
|
|
sibling = previousSiblings[j];
|
|
if ( sibling.nodeType === Node.TEXT_NODE && !sibling.veIsWhitespace ) {
|
|
// we've found an unwrapped paragraph so don't unwrap
|
|
doUnwrap = false;
|
|
break;
|
|
}
|
|
if ( ve.isBlockElement( sibling ) ) {
|
|
// there is a block element before the next unwrapped node
|
|
// so it's safe to unwrap
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if ( doUnwrap ) {
|
|
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
|
|
dataElementOrSlice = getDataElementOrSlice();
|
|
childDomElements = this.getDomElementsFromDataElement( dataElementOrSlice, doc );
|
|
// Add clone of internal data; we use a clone rather than a reference because
|
|
// we modify .veInternal.whitespace[1] in some cases
|
|
childDomElements[0].veInternal = ve.extendObject(
|
|
{ 'childDomElements': childDomElements },
|
|
ve.copyObject( dataElement.internal || {} )
|
|
);
|
|
// Add elements
|
|
for ( j = 0; j < childDomElements.length; j++ ) {
|
|
domElement.appendChild( childDomElements[j] );
|
|
}
|
|
// Descend into the first child node
|
|
parentDomElement = domElement;
|
|
domElement = childDomElements[0];
|
|
|
|
// 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
|
|
textNode = doc.createTextNode( ours );
|
|
textNode.veIsWhitespace = true;
|
|
parentDomElement.insertBefore(
|
|
textNode,
|
|
domElement
|
|
);
|
|
}
|
|
}
|
|
|
|
if ( ve.isArray( dataElementOrSlice ) ) {
|
|
i += dataElementOrSlice.length - 2;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// Process the outerPost whitespace of the very last node
|
|
if ( container.lastOuterPost !== undefined ) {
|
|
if ( container.lastChild && container.lastChild.nodeType === Node.TEXT_NODE ) {
|
|
// 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;
|
|
}
|
|
|
|
// 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] );
|
|
}
|
|
}
|
|
} );
|
|
};
|
|
|
|
/* Initialization */
|
|
|
|
ve.dm.converter = new ve.dm.Converter( ve.dm.modelRegistry, ve.dm.nodeFactory, ve.dm.annotationFactory, ve.dm.metaItemFactory );
|