mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-30 00:55:00 +00:00
1252 lines
42 KiB
JavaScript
1252 lines
42 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.documentData = null;
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this.store = null;
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this.internalList = 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,
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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.
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*/
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ve.dm.Converter.openAndCloseAnnotations = function ( currentSet, targetSet, open, close ) {
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var i, len, 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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for ( i = 0, len = currentSet.getLength(); i < len; i++ ) {
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if ( !targetSet.containsComparable( currentSet.get( i ) ) ) {
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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();
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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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for ( i = 0, len = targetSet.getLength(); i < len; i++ ) {
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annotation = targetSet.get( i );
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if ( !currentSet.containsComparable( 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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/**
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* Parse a linear model attribute name of the form html/i-j-k/attrName.
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*
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* @param {string} attribute Name of a linear model attribute
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* @param {HTMLElement[]|jQuery} domElements DOM elements array that the attribute indexes into
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* @returns {Object|null} Object with domElement and attribute keys, or null
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*/
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ve.dm.Converter.parseHtmlAttribute = function ( attribute, domElements ) {
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var i, ilen, indexes, child,
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/*jshint regexp:false */
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matches = attribute.match( /^html\/((?:\d+\-)*\d)\/(.*)$/ );
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if ( !matches ) {
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return null;
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}
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indexes = matches[1].split( '-' ); // matches[1] like '1-2-3'
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child = domElements[indexes[0]];
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for ( i = 1, ilen = indexes.length; i < ilen; i++ ) {
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child = child && child.childNodes[indexes[i]];
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}
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if ( !child ) {
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return null;
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}
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return { 'domElement': child, 'attribute': matches[2] };
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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, parsed,
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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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if ( nodeClass.static.isInternal ) {
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return false;
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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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parsed = ve.dm.Converter.parseHtmlAttribute( key, domElements );
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if ( parsed && !parsed.domElement.hasAttribute( parsed.attribute ) ) {
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parsed.domElement.setAttribute( parsed.attribute, dataElementAttributes[key] );
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}
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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 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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return dataElements;
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};
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/**
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* Set the 'html/' attributes for HTML attribute preservation
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* @param {Object} dataElement Linear model element to set the attributes on
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* @param {HTMLElement[]} domElements DOM elements the linear model element was generated from
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* @param {boolean} [deep=false] If true, descend into children and store their attributes too
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*/
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ve.dm.Converter.prototype.setHtmlAttributes = function ( dataElement, domElements, deep ) {
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var i, len,
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modelClass = this.modelRegistry.lookup( dataElement.type ),
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spec = modelClass.static.storeHtmlAttributes;
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function processChild( child, prefix ) {
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var i, len,
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// text nodes don't have attributes
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childAttributes = child.attributes || [];
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for ( i = 0, len = childAttributes.length; i < len; i++ ) {
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if ( ve.dm.Model.matchesAttributeSpec( childAttributes[i].name, spec ) ) {
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if ( !dataElement.attributes ) {
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dataElement.attributes = {};
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}
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dataElement.attributes[prefix + '/' + childAttributes[i].name] = childAttributes[i].value;
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}
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}
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if ( deep ) {
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for ( i = 0, len = child.childNodes.length; i < len; i++ ) {
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processChild( child.childNodes[i], prefix + '-' + i );
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}
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}
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}
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for ( i = 0, len = domElements.length; i < len; i++ ) {
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processChild( domElements[i], 'html/' + i );
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}
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};
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/**
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* Build an HTML DOM node for a linear model annotation.
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*
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* @method
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* @param {Object} dataAnnotation Annotation object
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* @returns {HTMLElement} HTML DOM node
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*/
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ve.dm.Converter.prototype.getDomElementFromDataAnnotation = function ( dataAnnotation, doc ) {
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var htmlData = dataAnnotation.toHTML(),
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domElement = doc.createElement( htmlData.tag );
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ve.setDomAttributes( domElement, htmlData.attributes );
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return domElement;
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};
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/**
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* Convert an HTML document to a linear model.
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* @param {HTMLDocument} doc HTML document to convert
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* @param {ve.dm.IndexValueStore} store Index-value store
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* @param {ve.dm.InternalList} internalList Internal list
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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 ( doc, store, internalList ) {
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var linearData, refData;
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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.internalList = internalList;
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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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linearData = 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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refData = this.internalList.getDataFromDom( this );
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linearData.batchSplice( linearData.getLength(), 0, refData );
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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.internalList = null;
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this.contextStack = null;
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return linearData;
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};
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/**
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* Wrapper for getDataFromDomRecursion which resets contextStack before the call
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* and then set it back after the call.
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*
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* TODO: This is kind of a hack, better implementation would be more appropriate in near future.
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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.getDataFromDomRecursionClean = function ( domElement, wrapperElement, annotationSet ) {
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var result, contextStack = this.contextStack;
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this.contextStack = [];
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result = this.getDataFromDomRecursion( domElement, wrapperElement, annotationSet );
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this.contextStack = contextStack;
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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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/**
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* Add whitespace to an element at a specific offset.
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*
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* @param {Array} element Data element
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* @param {number} index Whitespace index, 0-3
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* @param {string} whitespace Whitespace content
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*/
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function addWhitespace( element, index, whitespace ) {
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if ( !whitespace ) {
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return;
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}
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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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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,
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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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// Add whitespace to the last sibling: either the last meta item or the wrapper paragraph
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addWhitespace( wrappedMetaItems.length > 0 ? wrappedMetaItems[wrappedMetaItems.length - 2] : 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 elAbout, node,
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textNodes = [],
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aboutGroup = [ el ];
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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 = {},
|
|
prevContext = this.contextStack.length ?
|
|
this.contextStack[this.contextStack.length - 1] : null;
|
|
|
|
context.annotations = annotationSet || (
|
|
prevContext ? prevContext.annotations.clone() : new ve.dm.AnnotationSet( this.store )
|
|
);
|
|
context.branchType = wrapperElement ? wrapperElement.type : (
|
|
prevContext ? prevContext.branchType : 'document'
|
|
);
|
|
context.branchHasContent = this.nodeFactory.canNodeContainContent( context.branchType );
|
|
context.originallyExpectingContent = context.branchHasContent || !context.annotations.isEmpty();
|
|
context.expectingContent = context.originallyExpectingContent;
|
|
context.inWrapper = prevContext ? prevContext.inWrapper : false;
|
|
context.canCloseWrapper = false;
|
|
this.contextStack.push( context );
|
|
|
|
// Open element
|
|
if ( wrapperElement ) {
|
|
data.push( wrapperElement );
|
|
}
|
|
// Add contents
|
|
for ( i = 0; i < domElement.childNodes.length; i++ ) {
|
|
childDomElement = domElement.childNodes[i];
|
|
switch ( childDomElement.nodeType ) {
|
|
case Node.ELEMENT_NODE:
|
|
aboutGroup = getAboutGroup( childDomElement );
|
|
modelName = this.modelRegistry.matchElement( childDomElement, aboutGroup.length > 1 );
|
|
modelClass = this.modelRegistry.lookup( modelName ) || ve.dm.AlienNode;
|
|
if ( modelClass.prototype instanceof ve.dm.Annotation ) {
|
|
childDomElements = [ childDomElement ];
|
|
} else {
|
|
// Node or meta item
|
|
childDomElements = modelClass.static.enableAboutGrouping ?
|
|
aboutGroup : [ childDomElement ];
|
|
}
|
|
childDataElements = this.createDataElements( modelClass, childDomElements );
|
|
|
|
if ( !childDataElements ) {
|
|
// Alienate
|
|
modelClass = ve.dm.AlienNode;
|
|
childDomElements = modelClass.static.enableAboutGrouping ?
|
|
aboutGroup : [ childDomElement ];
|
|
childDataElements = this.createDataElement( modelClass, childDomElements );
|
|
} else {
|
|
// Update modelClass to reflect the type we got back
|
|
modelClass = this.modelRegistry.lookup( childDataElements[0].type );
|
|
}
|
|
|
|
// Now take the appropriate action based on that
|
|
if ( modelClass.prototype instanceof ve.dm.Annotation ) {
|
|
this.setHtmlAttributes( childDataElements[0], childDomElements, false );
|
|
annotation = this.annotationFactory.create( modelName, childDataElements[0] );
|
|
// Start wrapping if needed
|
|
if ( !context.inWrapper && !context.expectingContent ) {
|
|
startWrapping();
|
|
prevElement = wrappingParagraph;
|
|
}
|
|
// 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 ) {
|
|
this.setHtmlAttributes( childDataElements[0], childDomElements, true );
|
|
// 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 );
|
|
}
|
|
}
|
|
|
|
// If we're inserting content into a wrapper, any wrappedWhitespace
|
|
// up to this point can be considered dealt with
|
|
if ( context.inWrapper && childIsContent ) {
|
|
wrappedWhitespace = '';
|
|
}
|
|
|
|
// 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
|
|
this.setHtmlAttributes( childDataElements[0], childDomElements, false );
|
|
// 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 } );
|
|
}
|
|
this.setHtmlAttributes( childDataElements[0], childDomElements, true );
|
|
// 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 {Array} documentData Linear model data
|
|
* @param {ve.dm.IndexValueStore} store Index-value store
|
|
* @param {ve.dm.InternalList} internalList Internal list
|
|
* @returns {HTMLDocument} Document containing the resulting HTML
|
|
*/
|
|
ve.dm.Converter.prototype.getDomFromData = function ( documentData, store, internalList ) {
|
|
var doc = ve.createDocumentFromHTML( '' );
|
|
|
|
// Set up the converter state
|
|
this.documentData = documentData;
|
|
this.store = store;
|
|
this.internalList = internalList;
|
|
|
|
this.getDomSubtreeFromData( documentData, doc.body );
|
|
|
|
// Clear the state
|
|
this.documentData = null;
|
|
this.store = null;
|
|
this.internalList = null;
|
|
|
|
return doc;
|
|
};
|
|
|
|
/**
|
|
* Convert linear model data to an HTML DOM subtree and add it to a container element.
|
|
*
|
|
* @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 ( data, container ) {
|
|
var text, i, j, annotations, annotationElement, dataElement, dataElementOrSlice,
|
|
childDomElements, pre, ours, theirs, parentDomElement, lastChild, isContentNode, sibling,
|
|
previousSiblings, doUnwrap, textNode, type,
|
|
canContainContentStack = [],
|
|
conv = this,
|
|
doc = container.ownerDocument,
|
|
domElement = container,
|
|
annotationStack = new ve.dm.AnnotationSet( this.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(
|
|
this.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( this.store );
|
|
} else if ( data[i].type !== undefined ) {
|
|
dataElement = data[i];
|
|
// Element
|
|
if ( dataElement.type.charAt( 0 ) === '/' ) {
|
|
// Close element
|
|
parentDomElement = domElement.parentNode;
|
|
type = data[i].type.substr( 1 );
|
|
if ( this.metaItemFactory.lookup( type ) ) {
|
|
isContentNode = canContainContentStack[canContainContentStack.length - 1];
|
|
} else {
|
|
isContentNode = this.nodeFactory.isNodeContent( type );
|
|
canContainContentStack.pop();
|
|
}
|
|
// 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
|
|
);
|
|
}
|
|
parentDomElement.removeChild( domElement );
|
|
}
|
|
|
|
delete domElement.veInternal;
|
|
delete domElement.lastOuterPost;
|
|
// Ascend to parent node
|
|
domElement = parentDomElement;
|
|
} else {
|
|
// Create node from data
|
|
if ( !this.metaItemFactory.lookup( data[i].type ) ) {
|
|
canContainContentStack.push(
|
|
// if the last item was true then this item must inherit it
|
|
canContainContentStack[canContainContentStack.length - 1] ||
|
|
this.nodeFactory.canNodeContainContent( data[i].type )
|
|
);
|
|
}
|
|
|
|
dataElementOrSlice = getDataElementOrSlice();
|
|
childDomElements = this.getDomElementsFromDataElement( dataElementOrSlice, doc );
|
|
if ( childDomElements ) {
|
|
// 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;
|
|
}
|
|
};
|
|
|
|
/* Initialization */
|
|
|
|
ve.dm.converter = new ve.dm.Converter( ve.dm.modelRegistry, ve.dm.nodeFactory, ve.dm.annotationFactory, ve.dm.metaItemFactory );
|