mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
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519 lines
15 KiB
JavaScript
519 lines
15 KiB
JavaScript
/*!
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* VisualEditor DataModel AnnotationSet 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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* Annotation set.
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*
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* @constructor
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* @param {ve.dm.IndexValueStore} store Index-value store
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* @param {number[]} [indexes] Array of store indexes
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*/
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ve.dm.AnnotationSet = function VeDmAnnotationSet( store, storeIndexes ) {
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// Parent constructor
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this.store = store;
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this.storeIndexes = storeIndexes || [];
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};
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/* Methods */
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/**
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* Get the index-value store.
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*
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* @method
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* @returns {ve.dm.IndexValueStore} Index-value store
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*/
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ve.dm.AnnotationSet.prototype.getStore = function () {
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return this.store;
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};
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/**
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* Get a clone.
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*
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* @method
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* @returns {ve.dm.AnnotationSet} Copy of annotation set
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*/
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ve.dm.AnnotationSet.prototype.clone = function () {
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return new ve.dm.AnnotationSet( this.getStore(), this.storeIndexes.slice( 0 ) );
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};
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/**
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* Get an annotation set containing only annotations within the set with a specific name.
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*
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* @method
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* @param {string} name Type name
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* @returns {ve.dm.AnnotationSet} Copy of annotation set
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*/
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ve.dm.AnnotationSet.prototype.getAnnotationsByName = function ( name ) {
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return this.filter( function ( annotation ) { return annotation.name === name; } );
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};
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/**
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* Get an annotation set containing only annotations within the set which are comparable
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* to a specific annotation.
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*
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* @method
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* @param {ve.dm.Annotation} annotation Annotation to compare to
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* @returns {ve.dm.AnnotationSet} Copy of annotation set
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*/
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ve.dm.AnnotationSet.prototype.getComparableAnnotations = function ( annotation ) {
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return this.filter( function ( a ) {
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return ve.compare(
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annotation.getComparableObject(),
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a.getComparableObject()
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);
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} );
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};
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/**
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* Check if any annotations in the set have a specific name.
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*
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* @method
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* @param {string} name Type name
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* @returns {boolean} Annotation of given type exists in the set
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*/
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ve.dm.AnnotationSet.prototype.hasAnnotationWithName = function ( name ) {
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return this.containsMatching( function ( annotation ) { return annotation.name === name; } );
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};
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/**
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* Get an annotation or all annotations from the set.
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*
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* set.get( 5 ) returns the annotation at offset 5, set.get() returns an array with all annotations
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* in the entire set.
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*
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* @method
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* @param {number} [offset] If set, only get the annotation at the offset
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* @returns {ve.dm.Annotation[]|ve.dm.Annotation|undefined} The annotation at offset, or an array of all
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* annotations in the set
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*/
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ve.dm.AnnotationSet.prototype.get = function ( offset ) {
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if ( offset !== undefined ) {
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return this.getStore().value( this.getIndex( offset ) );
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} else {
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return this.getStore().values( this.getIndexes() );
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}
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};
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/**
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* Get store index from offset within annotation set.
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* @param {number} offset Offset within annotation set
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* @returns {number} Store index at specified offset
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*/
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ve.dm.AnnotationSet.prototype.getIndex = function ( offset ) {
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return this.storeIndexes[offset];
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};
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/**
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* Get all store indexes.
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* @returns {Array} Store indexes
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*/
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ve.dm.AnnotationSet.prototype.getIndexes = function () {
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return this.storeIndexes;
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};
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/**
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* Get the length of the set.
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*
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* @method
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* @returns {number} The number of annotations in the set
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*/
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ve.dm.AnnotationSet.prototype.getLength = function () {
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return this.storeIndexes.length;
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};
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/**
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* Check if the set is empty.
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*
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* @method
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* @returns {boolean} The set is empty
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*/
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ve.dm.AnnotationSet.prototype.isEmpty = function () {
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return this.getLength() === 0;
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};
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/**
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* Check whether a given annotation occurs in the set.
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*
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* Annotations are compared by store index.
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*
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* @method
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* @param {ve.dm.Annotation} annotation Annotation
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* @returns {boolean} There is an annotation in the set with the same hash as annotation
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*/
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ve.dm.AnnotationSet.prototype.contains = function ( annotation ) {
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return this.offsetOf( annotation ) !== -1;
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};
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/**
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* Check whether a given store index occurs in the set.
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*
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* @method
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* @param {number} storeIndex Store index of annotation
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* @returns {boolean} There is an annotation in the set with this store index
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*/
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ve.dm.AnnotationSet.prototype.containsIndex = function ( storeIndex ) {
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return ve.indexOf( storeIndex, this.getIndexes() ) !== -1;
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};
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/**
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* Check whether the set contains any of the annotations in another set.
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*
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* @method
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* @param {ve.dm.AnnotationSet} set Set to compare the set with
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* @returns {boolean} There is at least one annotation in set that is also in the set
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*/
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ve.dm.AnnotationSet.prototype.containsAnyOf = function ( set ) {
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var i, length, setIndexes = set.getIndexes(), thisIndexes = this.getIndexes();
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for ( i = 0, length = setIndexes.length; i < length; i++ ) {
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if ( ve.indexOf( setIndexes[i], thisIndexes ) !== -1 ) {
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return true;
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}
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}
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return false;
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};
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/**
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* Check whether the set contains all of the annotations in another set.
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*
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* @method
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* @param {ve.dm.AnnotationSet} set Set to compare the set with
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* @returns {boolean} All annotations in set are also in the set
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*/
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ve.dm.AnnotationSet.prototype.containsAllOf = function ( set ) {
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var i, length, setIndexes = set.getIndexes(), thisIndexes = this.getIndexes();
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for ( i = 0, length = setIndexes.length; i < length; i++ ) {
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if ( ve.indexOf( setIndexes[i], thisIndexes ) === -1 ) {
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return false;
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}
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}
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return true;
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};
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/**
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* Get the offset of a given annotation in the set.
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*
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* @method
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* @param {ve.dm.Annotation} annotation Annotation to search for
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* @returns {number} Offset of annotation in the set, or -1 if annotation is not in the set.
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*/
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ve.dm.AnnotationSet.prototype.offsetOf = function ( annotation ) {
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return this.offsetOfIndex( this.store.indexOfHash( OO.getHash( annotation ) ) );
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};
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/**
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* Get the offset of a given annotation in the set by store index.
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*
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* @method
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* @param {number} storeIndex Store index of annotation to search for
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* @returns {number} Offset of annotation in the set, or -1 if annotation is not in the set.
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*/
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ve.dm.AnnotationSet.prototype.offsetOfIndex = function ( storeIndex ) {
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return ve.indexOf( storeIndex, this.getIndexes() );
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};
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/**
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* Filter the set by an item property.
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*
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* This returns a new set with all annotations in the set for which the callback returned true for.
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*
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* @method
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* @param {Function} callback Function that takes an annotation and returns boolean true to include
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* @param {boolean} [returnBool] For internal use only
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* @returns {ve.dm.AnnotationSet} New set containing only the matching annotations
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*/
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ve.dm.AnnotationSet.prototype.filter = function ( callback, returnBool ) {
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var i, length, result, storeIndex, annotation;
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if ( !returnBool ) {
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result = this.clone();
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// TODO: Should we be returning this on all methods that modify the original? Might help
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// with chainability, but perhaps it's also confusing because most chainable methods return
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// a new hash set.
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result.removeAll();
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}
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for ( i = 0, length = this.getLength(); i < length; i++ ) {
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storeIndex = this.getIndex( i );
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annotation = this.getStore().value( storeIndex );
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if ( callback( annotation ) ) {
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if ( returnBool ) {
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return true;
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} else {
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result.storeIndexes.push( storeIndex );
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}
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}
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}
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return returnBool ? false : result;
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};
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/**
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* Check if the set contains an annotation comparable to the specified one.
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*
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* getComparableObject is used to compare the annotations, and should return
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* true if an annotation is found which is mergeable with the specified one.
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*
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* @param {ve.dm.Annotation} annotation Annotation to compare to
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* @returns {boolean} At least one comprable annotation found
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*/
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ve.dm.AnnotationSet.prototype.containsComparable = function ( annotation ) {
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return this.filter( function ( a ) {
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return ve.compare(
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annotation.getComparableObject(),
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a.getComparableObject()
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);
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}, true );
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};
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/**
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* HACK: Check if the set contains an annotation comparable to the specified one
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* for the purposes of serialization.
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*
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* This method uses getComparableObjectForSerialization which also includes
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* HTML attributes.
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*
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* @param {ve.dm.Annotation} annotation Annotation to compare to
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* @returns {boolean} At least one comprable annotation found
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*/
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ve.dm.AnnotationSet.prototype.containsComparableForSerialization = function ( annotation ) {
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return this.filter( function ( a ) {
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return annotation.compareToForSerialization( a );
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}, true );
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};
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/**
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* Check if the set contains at least one annotation where a given property matches a given filter.
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*
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* This is equivalent to (but more efficient than) `!this.filter( .. ).isEmpty()`.
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*
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* @see ve.dm.AnnotationSet#filter
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*
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* @method
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* @param {Function} callback Function that takes an annotation and returns boolean true to include
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* @returns {boolean} At least one matching annotation found
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*/
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ve.dm.AnnotationSet.prototype.containsMatching = function ( callback ) {
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return this.filter( callback, true );
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};
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/**
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* Check if the set contains the same annotations as another set.
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*
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* Compares annotations by their comparable object value.
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*
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* @method
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* @param {ve.dm.AnnotationSet} annotationSet The annotationSet to compare this one to
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* @returns {boolean} The annotations are the same
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*/
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ve.dm.AnnotationSet.prototype.compareTo = function ( annotationSet ) {
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var i, length = this.getIndexes().length;
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if ( length === annotationSet.getLength() ) {
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for ( i = 0; i < length; i++ ) {
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if ( !annotationSet.containsComparable( this.get( i ) ) ) {
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return false;
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}
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}
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} else {
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return false;
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}
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return true;
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};
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/**
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* Add an annotation to the set.
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*
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* If the annotation is already present in the set, nothing happens.
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*
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* The annotation will be inserted before the annotation that is currently at the given offset. If offset is
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* negative, it will be counted from the end (i.e. offset -1 is the last item, -2 the second-to-last,
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* etc.). If offset is out of bounds, the annotation will be added to the end of the set.
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*
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* @method
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* @param {ve.dm.Annotation} annotation Annotation to add
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* @param {number} offset Offset to add the annotation at
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*/
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ve.dm.AnnotationSet.prototype.add = function ( annotation, offset ) {
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var storeIndex = this.getStore().index( annotation );
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// negative offset
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if ( offset < 0 ) {
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offset = this.getLength() + offset;
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}
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// greater than length, add to end
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if ( offset >= this.getLength() ) {
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this.push( annotation );
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return;
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}
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// if not in set already, splice in place
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if ( !this.containsIndex( storeIndex ) ) {
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this.storeIndexes.splice( offset, 0, storeIndex );
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}
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};
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/**
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* Add all annotations in the given set to the end of the set.
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*
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* Annotations from the other set that are already in the set will not be added again.
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*
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* @method
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* @param {ve.dm.AnnotationSet} set Set to add to the set
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*/
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ve.dm.AnnotationSet.prototype.addSet = function ( set ) {
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this.storeIndexes = OO.simpleArrayUnion( this.getIndexes(), set.getIndexes() );
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};
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/**
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* Add an annotation at the end of the set.
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*
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* @method
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* @param {ve.dm.Annotation} annotation Annotation to add
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*/
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ve.dm.AnnotationSet.prototype.push = function ( annotation ) {
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this.pushIndex( this.getStore().index( annotation ) );
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};
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/**
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* Add an annotation at the end of the set by store index.
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*
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* @method
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* @param {number} storeIndex Store index of annotation to add
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*/
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ve.dm.AnnotationSet.prototype.pushIndex = function ( storeIndex ) {
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this.storeIndexes.push( storeIndex );
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};
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/**
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* Remove the annotation at a given offset.
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*
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* @method
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* @param {number} offset Offset to remove item at. If negative, the counts from the end, see add()
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* @throws {Error} Offset out of bounds.
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*/
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ve.dm.AnnotationSet.prototype.removeAt = function ( offset ) {
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if ( offset < 0 ) {
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offset = this.getLength() + offset;
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}
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if ( offset >= this.getLength() ) {
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throw new Error( 'Offset out of bounds' );
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}
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this.storeIndexes.splice( offset, 1 );
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};
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/**
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* Remove a given annotation from the set by store index.
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*
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* If the annotation isn't in the set, nothing happens.
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*
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* @method
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* @param {number} storeIndex Store index of annotation to remove
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*/
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ve.dm.AnnotationSet.prototype.removeIndex = function ( storeIndex ) {
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var offset = this.offsetOfIndex( storeIndex );
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if ( offset !== -1 ) {
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this.storeIndexes.splice( offset, 1 );
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}
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};
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/**
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* Remove a given annotation from the set.
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*
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* If the annotation isn't in the set, nothing happens.
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*
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* @method
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* @param {ve.dm.Annotation} annotation Annotation to remove
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*/
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ve.dm.AnnotationSet.prototype.remove = function ( annotation ) {
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var offset = this.offsetOf( annotation );
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if ( offset !== -1 ) {
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this.storeIndexes.splice( offset, 1 );
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}
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};
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/**
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* Remove all annotations.
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*
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* @method
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*/
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ve.dm.AnnotationSet.prototype.removeAll = function () {
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this.storeIndexes = [];
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};
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/**
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* Remove all annotations in a given set from the set.
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*
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* Annotations that aren't in the set are ignored.
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*
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* @method
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* @param {ve.dm.AnnotationSet} set Set to remove from the set
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*/
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ve.dm.AnnotationSet.prototype.removeSet = function ( set ) {
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this.storeIndexes = OO.simpleArrayDifference( this.getIndexes(), set.getIndexes() );
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};
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/**
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* Remove all annotations that are not also in a given other set from the set.
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*
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* @method
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* @param {ve.dm.AnnotationSet} set Set to intersect with the set
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*/
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ve.dm.AnnotationSet.prototype.removeNotInSet = function ( set ) {
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this.storeIndexes = OO.simpleArrayIntersection( this.getIndexes(), set.getIndexes() );
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};
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/**
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* Reverse the set.
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*
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* This returns a copy, the original set is not modified.
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*
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* @method
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* @returns {ve.dm.AnnotationSet} Copy of the set with the order reversed.
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*/
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ve.dm.AnnotationSet.prototype.reversed = function () {
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var newSet = this.clone();
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newSet.storeIndexes.reverse();
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return newSet;
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};
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/**
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* Merge another set into the set.
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*
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* This returns a copy, the original set is not modified.
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*
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* @method
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* @param {ve.dm.AnnotationSet} set Other set
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* @returns {ve.dm.AnnotationSet} Set containing all annotations in the set as well as all annotations in set
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*/
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ve.dm.AnnotationSet.prototype.mergeWith = function ( set ) {
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var newSet = this.clone();
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newSet.addSet( set );
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return newSet;
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};
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/**
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* Get the difference between the set and another set.
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*
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* @method
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* @param {ve.dm.AnnotationSet} set Other set
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* @returns {ve.dm.AnnotationSet} New set containing all annotations that are in the set but not in set
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*/
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ve.dm.AnnotationSet.prototype.diffWith = function ( set ) {
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var newSet = this.clone();
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newSet.removeSet( set );
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return newSet;
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};
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/**
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* Get the intersection of the set with another set.
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*
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* @method
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* @param {ve.dm.AnnotationSet} set Other set
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* @returns {ve.dm.AnnotationSet} New set containing all annotations that are both in the set and in set
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*/
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ve.dm.AnnotationSet.prototype.intersectWith = function ( set ) {
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var newSet = this.clone();
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newSet.removeNotInSet( set );
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return newSet;
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};
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