mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-12-04 18:58:37 +00:00
7cec9ae04a
Allow pasting of rich (HTML) content. ve.ce.Surface * Use a sliced document clone for converting to DM HTML (copy) * Add full context to pasteTarget before copying * Add ve-pasteProtect class to spans to prevent them being dropped * Implement external paste by converting HTML to data and inserting with newFromDocumentInsertion * Remove clipboard key placeholder after read so they aren't picked up by rich paste. Hash no longer includes the placeholder. * Detect the corruption of important spans and fallback to clipboard data HTML if available. ve.dm.LinearData * Add clone method for copy ve.dm.ElementLinearData * Add compareUnannotated for use by context diffing. * Add sanitize method for cleaning data according to a set of rules. ve.dm.Transaction * Add range parameter for inserting a range of a document only, e.g. stripping the paste context. ve.dm.Document * Implement sliced document clone creation so that DM HTML is generated correctly in onCopy ve.dm.DocumentSlice * Replaces LinearDataSlice. Now has two ranges for balanced data and data with a full context. ve.init.Target.js * Define default, loose, paste rules (just remove aliens). ve.init.mw.ViewPageTarget * Define strict MW paste rules: + no links, spans, underlines + no images, divs, aliens + strip extra HTML attribues ve.init.sa.Target, ve.init.mw.ViewPageTarget, ve.ui.Surface * Pass through and store paste rules. Bug: 41193 Bug: 48170 Bug: 50128 Bug: 53828 Change-Id: I38d63e31ee3e3ee11707e3fffed5174e1d633b42
1258 lines
44 KiB
JavaScript
1258 lines
44 KiB
JavaScript
/*!
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* VisualEditor DataModel Transaction 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 transaction.
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*
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* @class
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* @constructor
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*/
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ve.dm.Transaction = function VeDmTransaction() {
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this.operations = [];
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this.lengthDifference = 0;
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this.applied = false;
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};
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/* Static Methods */
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/**
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* Generate a transaction that inserts data at an offset.
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*
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* @static
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* @method
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* @param {ve.dm.Document} doc Document to create transaction for
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* @param {number} offset Offset to insert at
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* @param {Array} data Data to insert
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* @returns {ve.dm.Transaction} Transaction that inserts data
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*/
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ve.dm.Transaction.newFromInsertion = function ( doc, offset, data ) {
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var insertion, tx = new ve.dm.Transaction();
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// Fix up the insertion
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insertion = doc.fixupInsertion( data, offset );
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// Retain up to insertion point, if needed
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tx.pushRetain( insertion.offset );
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// Insert data
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tx.pushReplace( doc, insertion.offset, insertion.remove, insertion.data );
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// Retain to end of document, if needed (for completeness)
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tx.pushFinalRetain( doc, insertion.offset + insertion.remove );
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return tx;
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};
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/**
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* Generate a transaction that removes data from a range.
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*
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* There are three possible results from a removal:
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*
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* - Remove content only
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* - Occurs when the range starts and ends on elements of different type, depth or ancestry
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* - Remove entire elements and their content
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* - Occurs when the range spans across an entire element
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* - Merge two elements by removing the end of one and the beginning of another
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* - Occurs when the range starts and ends on elements of similar type, depth and ancestry
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*
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* This function uses the following logic to decide what to actually remove:
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*
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* 1. Elements are only removed if range being removed covers the entire element
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* 2. Elements can only be merged if {@link ve.dm.Node#canBeMergedWith} returns true
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* 3. Merges take place at the highest common ancestor
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*
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* @method
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* @param {ve.dm.Document} doc Document to create transaction for
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* @param {ve.Range} range Range of data to remove
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* @param {boolean} [removeMetadata=false] Remove metadata instead of collapsing it
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* @returns {ve.dm.Transaction} Transaction that removes data
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* @throws {Error} Invalid range
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*/
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ve.dm.Transaction.newFromRemoval = function ( doc, range, removeMetadata ) {
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var i, selection, first, last, nodeStart, nodeEnd,
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offset = 0,
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removeStart = null,
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removeEnd = null,
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tx = new ve.dm.Transaction();
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// Validate range
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if ( range.isCollapsed() ) {
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// Empty range, nothing to remove, retain up to the end of the document (for completeness)
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tx.pushFinalRetain( doc, 0 );
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return tx;
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}
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// Select nodes and validate selection
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selection = doc.selectNodes( range, 'covered' );
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if ( selection.length === 0 ) {
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// Empty selection? Something is wrong!
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throw new Error( 'Invalid range, cannot remove from ' + range.start + ' to ' + range.end );
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}
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first = selection[0];
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last = selection[selection.length - 1];
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// If the first and last node are mergeable, merge them
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if ( first.node.canBeMergedWith( last.node ) ) {
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if ( !first.range && !last.range ) {
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// First and last node are both completely covered, remove them
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removeStart = first.nodeOuterRange.start;
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removeEnd = last.nodeOuterRange.end;
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} else {
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// Either the first node or the last node is partially covered, so remove
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// the selected content
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removeStart = ( first.range || first.nodeRange ).start;
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removeEnd = ( last.range || last.nodeRange ).end;
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}
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tx.pushRetain( removeStart );
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tx.addSafeRemoveOps( doc, removeStart, removeEnd, removeMetadata );
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tx.pushFinalRetain( doc, removeEnd );
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// All done
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return tx;
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}
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// The selection wasn't mergeable, so remove nodes that are completely covered, and strip
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// nodes that aren't
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for ( i = 0; i < selection.length; i++ ) {
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if ( !selection[i].range ) {
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// Entire node is covered, remove it
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nodeStart = selection[i].nodeOuterRange.start;
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nodeEnd = selection[i].nodeOuterRange.end;
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} else {
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// Part of the node is covered, remove that range
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nodeStart = selection[i].range.start;
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nodeEnd = selection[i].range.end;
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}
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// Merge contiguous removals. Only apply a removal when a gap appears, or at the
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// end of the loop
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if ( removeEnd === null ) {
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// First removal
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removeStart = nodeStart;
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removeEnd = nodeEnd;
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} else if ( removeEnd === nodeStart ) {
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// Merge this removal into the previous one
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removeEnd = nodeEnd;
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} else {
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// There is a gap between the previous removal and this one
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// Push the previous removal first
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tx.pushRetain( removeStart - offset );
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tx.addSafeRemoveOps( doc, removeStart, removeEnd, removeMetadata );
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offset = removeEnd;
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// Now start this removal
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removeStart = nodeStart;
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removeEnd = nodeEnd;
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}
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}
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// Apply the last removal, if any
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if ( removeEnd !== null ) {
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tx.pushRetain( removeStart - offset );
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tx.addSafeRemoveOps( doc, removeStart, removeEnd, removeMetadata );
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offset = removeEnd;
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}
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// Retain up to the end of the document
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tx.pushFinalRetain( doc, offset );
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return tx;
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};
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/**
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* Build a transaction that inserts the contents of a document at a given offset.
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*
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* This is typically used to merge changes to a document slice back into the main document. If newDoc
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* is a document slice of doc, it's assumed that there were no changes to doc's internal list since
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* the slice, so any differences between internal items that doc and newDoc have in common will
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* be resolved in newDoc's favor.
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*
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* @param {ve.dm.Document} doc Main document
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* @param {number} offset Offset to insert at
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* @param {ve.dm.Document} newDoc Document to insert
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* @param {ve.Range} [newDocRange] Range from the new document to insert (defaults to entire document)
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* @returns {ve.dm.Transaction} Transaction that inserts the nodes and updates the internal list
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*/
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ve.dm.Transaction.newFromDocumentInsertion = function ( doc, offset, newDoc, newDocRange ) {
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var i, len, merge, data, metadata, listData, listMetadata, oldEndOffset, newEndOffset, tx, insertion, range,
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listNode = doc.internalList.getListNode(),
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listNodeRange = listNode.getRange(),
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newListNode = newDoc.internalList.getListNode(),
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newListNodeRange = newListNode.getRange(),
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newListNodeOuterRange = newListNode.getOuterRange();
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if ( newDocRange ) {
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data = new ve.dm.ElementLinearData( doc.getStore(), newDoc.getData( newDocRange, true ) );
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metadata = new ve.dm.MetaLinearData( doc.getStore(), newDoc.getMetadata( newDocRange, true ) );
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} else {
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// Get the data and the metadata, but skip over the internal list
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data = new ve.dm.ElementLinearData( doc.getStore(),
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newDoc.getData( new ve.Range( 0, newListNodeOuterRange.start ), true ).concat(
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newDoc.getData( new ve.Range( newListNodeOuterRange.end, newDoc.data.getLength() ), true )
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)
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);
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metadata = new ve.dm.MetaLinearData( doc.getStore(),
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newDoc.getMetadata( new ve.Range( 0, newListNodeOuterRange.start ), true ).concat(
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newListNodeOuterRange.end < newDoc.data.getLength() ? newDoc.getMetadata(
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new ve.Range( newListNodeOuterRange.end + 1, newDoc.data.getLength() ), true
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) : []
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)
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);
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// TODO deal with metadata right before and right after the internal list
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}
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// Merge the stores
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merge = doc.getStore().merge( newDoc.getStore() );
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// Remap the store indexes in the data
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data.remapStoreIndexes( merge );
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merge = doc.internalList.merge( newDoc.internalList, newDoc.origInternalListLength || 0 );
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// Remap the indexes in the data
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data.remapInternalListIndexes( merge.mapping, doc.internalList );
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// Get data for the new internal list
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if ( newDoc.origDoc === doc ) {
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// newDoc is a document slice based on doc, so all the internal list items present in doc
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// when it was cloned are also in newDoc. We need to get the newDoc version of these items
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// so that changes made in newDoc are reflected.
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if ( newDoc.origInternalListLength > 0 ) {
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oldEndOffset = doc.internalList.getItemNode( newDoc.origInternalListLength - 1 ).getOuterRange().end;
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newEndOffset = newDoc.internalList.getItemNode( newDoc.origInternalListLength - 1 ).getOuterRange().end;
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} else {
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oldEndOffset = listNodeRange.start;
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newEndOffset = newListNodeRange.start;
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}
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listData = newDoc.getData( new ve.Range( newListNodeRange.start, newEndOffset ), true )
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.concat( doc.getData( new ve.Range( oldEndOffset, listNodeRange.end ), true ) );
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listMetadata = newDoc.getMetadata( new ve.Range( newListNodeRange.start, newEndOffset ), true )
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.concat( doc.getMetadata( new ve.Range( oldEndOffset, listNodeRange.end ) , true ) );
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} else {
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// newDoc is brand new, so use doc's internal list as a base
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listData = doc.getData( listNodeRange, true );
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listMetadata = doc.getMetadata( listNodeRange, true );
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}
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for ( i = 0, len = merge.newItemRanges.length; i < len; i++ ) {
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listData = listData.concat( newDoc.getData( merge.newItemRanges[i], true ) );
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// We don't have to worry about merging metadata at the edges, because there can't be
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// metadata between internal list items
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listMetadata = listMetadata.concat( newDoc.getMetadata( merge.newItemRanges[i], true ) );
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}
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tx = new ve.dm.Transaction();
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if ( offset <= listNodeRange.start ) {
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// offset is before listNodeRange
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// First replace the node, then the internal list
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// Fix up the node insertion
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insertion = doc.fixupInsertion( data.data, offset );
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tx.pushRetain( insertion.offset );
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tx.pushReplace( doc, insertion.offset, insertion.remove, insertion.data, metadata.data );
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tx.pushRetain( listNodeRange.start - ( insertion.offset + insertion.remove ) );
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tx.pushReplace( doc, listNodeRange.start, listNodeRange.end - listNodeRange.start,
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listData, listMetadata
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);
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tx.pushFinalRetain( doc, listNodeRange.end );
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} else if ( offset >= listNodeRange.end ) {
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// offset is after listNodeRange
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// First replace the internal list, then the node
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// Fix up the node insertion
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insertion = doc.fixupInsertion( data.data, offset );
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tx.pushRetain( listNodeRange.start );
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tx.pushReplace( doc, listNodeRange.start, listNodeRange.end - listNodeRange.start,
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listData, listMetadata
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);
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tx.pushRetain( insertion.offset - listNodeRange.end );
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tx.pushReplace( doc, insertion.offset, insertion.remove, insertion.data, metadata.data );
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tx.pushFinalRetain( doc, insertion.offset + insertion.remove );
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} else if ( offset >= listNodeRange.start && offset <= listNodeRange.end ) {
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// offset is within listNodeRange
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// Merge data into listData, then only replace the internal list
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// Find the internalItem we are inserting into
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i = 0;
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// Find item node in doc
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while (
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( range = doc.internalList.getItemNode( i ).getRange() ) &&
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offset > range.end
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) {
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i++;
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}
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// Get range from newDoc
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range = newDoc.internalList.getItemNode( i ).getRange();
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ve.batchSplice( listData, range.start - newListNodeRange.start,
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range.end - range.start, data.data );
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ve.batchSplice( listMetadata, range.start - newListNodeRange.start,
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range.end - range.start, metadata.data );
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tx.pushRetain( listNodeRange.start );
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tx.pushReplace( doc, listNodeRange.start, listNodeRange.end - listNodeRange.start,
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listData, listMetadata
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);
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tx.pushFinalRetain( doc, listNodeRange.end );
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}
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return tx;
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};
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/**
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* Generate a transaction that changes one or more attributes.
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*
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* @static
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* @method
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* @param {ve.dm.Document} doc Document to create transaction for
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* @param {number} offset Offset of element
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* @param {Object.<string,Mixed>} attr List of attribute key and value pairs, use undefined value
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* to remove an attribute
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* @returns {ve.dm.Transaction} Transaction that changes an element
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* @throws {Error} Cannot set attributes to non-element data
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* @throws {Error} Cannot set attributes on closing element
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*/
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ve.dm.Transaction.newFromAttributeChanges = function ( doc, offset, attr ) {
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var key,
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tx = new ve.dm.Transaction(),
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data = doc.getData();
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// Verify element exists at offset
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if ( data[offset].type === undefined ) {
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throw new Error( 'Cannot set attributes to non-element data' );
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}
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// Verify element is not a closing
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if ( data[offset].type.charAt( 0 ) === '/' ) {
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throw new Error( 'Cannot set attributes on closing element' );
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}
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// Retain up to element
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tx.pushRetain( offset );
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// Change attribute
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for ( key in attr ) {
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tx.pushReplaceElementAttribute(
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key, 'attributes' in data[offset] ? data[offset].attributes[key] : undefined, attr[key]
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);
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}
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// Retain to end of document
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tx.pushFinalRetain( doc, offset );
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return tx;
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};
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/**
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* Generate a transaction that annotates content.
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*
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* @static
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* @method
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* @param {ve.dm.Document} doc Document to create transaction for
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* @param {ve.Range} range Range to annotate
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* @param {string} method Annotation mode
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* - `set`: Adds annotation to all content in range
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* - `clear`: Removes instances of annotation from content in range
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* @param {ve.dm.Annotation} annotation Annotation to set or clear
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* @returns {ve.dm.Transaction} Transaction that annotates content
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*/
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ve.dm.Transaction.newFromAnnotation = function ( doc, range, method, annotation ) {
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var covered, type, annotatable,
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tx = new ve.dm.Transaction(),
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data = doc.data,
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i = range.start,
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span = i,
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on = false,
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insideContentNode = false;
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// Iterate over all data in range, annotating where appropriate
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while ( i < range.end ) {
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if ( data.isElementData( i ) ) {
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type = data.getType( i );
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if ( ve.dm.nodeFactory.isNodeContent( type ) ) {
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if ( method === 'set' && !ve.dm.nodeFactory.canNodeTakeAnnotationType( type, annotation ) ) {
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// Blacklisted annotations can't be set
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annotatable = false;
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} else {
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annotatable = true;
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}
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} else {
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// Structural nodes are never annotatable
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annotatable = false;
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}
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} else {
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// Text is always annotatable
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annotatable = true;
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}
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if (
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!annotatable ||
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( insideContentNode && !data.isCloseElementData( i ) )
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) {
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// Structural element opening or closing, or entering a content node
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if ( on ) {
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tx.pushRetain( span );
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tx.pushStopAnnotating( method, annotation );
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span = 0;
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on = false;
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}
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} else if (
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( !data.isElementData( i ) || !data.isCloseElementData( i ) ) &&
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!insideContentNode
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) {
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// Character or content element opening
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if ( data.isElementData( i ) ) {
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insideContentNode = true;
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}
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covered = data.getAnnotationsFromOffset( i ).contains( annotation );
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if ( ( covered && method === 'set' ) || ( !covered && method === 'clear' ) ) {
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// Skip annotated content
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if ( on ) {
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tx.pushRetain( span );
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tx.pushStopAnnotating( method, annotation );
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span = 0;
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on = false;
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}
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} else {
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// Cover non-annotated content
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if ( !on ) {
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tx.pushRetain( span );
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tx.pushStartAnnotating( method, annotation );
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span = 0;
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on = true;
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}
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}
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} else if ( data.isCloseElementData( i ) ) {
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// Content closing, skip
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insideContentNode = false;
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}
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span++;
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i++;
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}
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tx.pushRetain( span );
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if ( on ) {
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tx.pushStopAnnotating( method, annotation );
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}
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tx.pushFinalRetain( doc, range.end );
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return tx;
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};
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/**
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* Generate a transaction that inserts metadata elements.
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*
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* @static
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* @method
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* @param {ve.dm.Document} doc Document to create transaction for
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* @param {number} offset Offset of element
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* @param {number} index Index of metadata cursor within element
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* @param {Array} newElements New elements to insert
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* @returns {ve.dm.Transaction} Transaction that inserts the metadata elements
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*/
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ve.dm.Transaction.newFromMetadataInsertion = function ( doc, offset, index, newElements ) {
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var tx = new ve.dm.Transaction(),
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data = doc.metadata,
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elements = data.getData( offset ) || [];
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// Retain up to element
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tx.pushRetain( offset );
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// Retain up to metadata element (second dimension)
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tx.pushRetainMetadata( index );
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// Insert metadata elements
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tx.pushReplaceMetadata(
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[], newElements
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);
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// Retain up to end of metadata elements (second dimension)
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tx.pushRetainMetadata( elements.length - index );
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// Retain to end of document
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tx.pushFinalRetain( doc, offset, elements.length );
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return tx;
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};
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|
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/**
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* Generate a transaction that removes metadata elements.
|
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*
|
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* @static
|
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* @method
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* @param {ve.dm.Document} doc Document to create transaction for
|
|
* @param {number} offset Offset of element
|
|
* @param {ve.Range} range Range of metadata to remove
|
|
* @returns {ve.dm.Transaction} Transaction that removes metadata elements
|
|
* @throws {Error} Cannot remove metadata from empty list
|
|
* @throws {Error} Range out of bounds
|
|
*/
|
|
ve.dm.Transaction.newFromMetadataRemoval = function ( doc, offset, range ) {
|
|
var selection,
|
|
tx = new ve.dm.Transaction(),
|
|
data = doc.metadata,
|
|
elements = data.getData( offset ) || [];
|
|
|
|
if ( !elements.length ) {
|
|
throw new Error( 'Cannot remove metadata from empty list' );
|
|
}
|
|
|
|
if ( range.start < 0 || range.end > elements.length ) {
|
|
throw new Error( 'Range out of bounds' );
|
|
}
|
|
|
|
selection = elements.slice( range.start, range.end );
|
|
|
|
// Retain up to element
|
|
tx.pushRetain( offset );
|
|
// Retain up to metadata element (second dimension)
|
|
tx.pushRetainMetadata( range.start );
|
|
// Remove metadata elements
|
|
tx.pushReplaceMetadata(
|
|
selection, []
|
|
);
|
|
// Retain up to end of metadata elements (second dimension)
|
|
tx.pushRetainMetadata( elements.length - range.end );
|
|
// Retain to end of document (unless we're already off the end )
|
|
tx.pushFinalRetain( doc, offset, elements.length );
|
|
return tx;
|
|
};
|
|
|
|
/**
|
|
* Generate a transaction that replaces a single metadata element.
|
|
*
|
|
* @static
|
|
* @method
|
|
* @param {ve.dm.Document} doc Document to create transaction for
|
|
* @param {number} offset Offset of element
|
|
* @param {number} index Index of metadata cursor within element
|
|
* @param {Object} newElement New element to insert
|
|
* @returns {ve.dm.Transaction} Transaction that replaces a metadata element
|
|
* @throws {Error} Metadata index out of bounds
|
|
*/
|
|
ve.dm.Transaction.newFromMetadataElementReplacement = function ( doc, offset, index, newElement ) {
|
|
var oldElement,
|
|
tx = new ve.dm.Transaction(),
|
|
data = doc.getMetadata(),
|
|
elements = data[offset] || [];
|
|
|
|
if ( index >= elements.length ) {
|
|
throw new Error( 'Metadata index out of bounds' );
|
|
}
|
|
|
|
oldElement = elements[index];
|
|
|
|
// Retain up to element
|
|
tx.pushRetain( offset );
|
|
// Retain up to metadata element (second dimension)
|
|
tx.pushRetainMetadata( index );
|
|
// Remove metadata elements
|
|
tx.pushReplaceMetadata(
|
|
[ oldElement ], [ newElement ]
|
|
);
|
|
// Retain up to end of metadata elements (second dimension)
|
|
tx.pushRetainMetadata( elements.length - index - 1 );
|
|
// Retain to end of document (unless we're already off the end )
|
|
tx.pushFinalRetain( doc, offset, elements.length );
|
|
return tx;
|
|
};
|
|
|
|
/**
|
|
* Generate a transaction that converts elements that can contain content.
|
|
*
|
|
* @static
|
|
* @method
|
|
* @param {ve.dm.Document} doc Document to create transaction for
|
|
* @param {ve.Range} range Range to convert
|
|
* @param {string} type Symbolic name of element type to convert to
|
|
* @param {Object} attr Attributes to initialize element with
|
|
* @returns {ve.dm.Transaction} Transaction that converts content branches
|
|
*/
|
|
ve.dm.Transaction.newFromContentBranchConversion = function ( doc, range, type, attr ) {
|
|
var i, selected, branch, branchOuterRange,
|
|
tx = new ve.dm.Transaction(),
|
|
selection = doc.selectNodes( range, 'leaves' ),
|
|
opening = { 'type': type },
|
|
closing = { 'type': '/' + type },
|
|
previousBranch,
|
|
previousBranchOuterRange;
|
|
// Add attributes to opening if needed
|
|
if ( ve.isPlainObject( attr ) ) {
|
|
opening.attributes = attr;
|
|
} else {
|
|
attr = {};
|
|
}
|
|
// Replace the wrappings of each content branch in the range
|
|
for ( i = 0; i < selection.length; i++ ) {
|
|
selected = selection[i];
|
|
branch = selected.node.isContent() ? selected.node.getParent() : selected.node;
|
|
if ( branch.canContainContent() ) {
|
|
// Skip branches that are already of the target type and have identical attributes
|
|
if ( branch.getType() === type && ve.compare( branch.getAttributes(), attr ) ) {
|
|
continue;
|
|
}
|
|
branchOuterRange = branch.getOuterRange();
|
|
// Don't convert the same branch twice
|
|
if ( branch === previousBranch ) {
|
|
continue;
|
|
}
|
|
// Retain up to this branch, considering where the previous one left off
|
|
tx.pushRetain(
|
|
branchOuterRange.start - ( previousBranch ? previousBranchOuterRange.end : 0 )
|
|
);
|
|
// Replace the opening
|
|
tx.pushReplace( doc, branchOuterRange.start, 1, [ ve.copy( opening ) ] );
|
|
// Retain the contents
|
|
tx.pushRetain( branch.getLength() );
|
|
// Replace the closing
|
|
tx.pushReplace( doc, branchOuterRange.end - 1, 1, [ ve.copy( closing ) ] );
|
|
// Remember this branch and its range for next time
|
|
previousBranch = branch;
|
|
previousBranchOuterRange = branchOuterRange;
|
|
}
|
|
}
|
|
// Retain until the end
|
|
tx.pushFinalRetain( doc, previousBranch ? previousBranchOuterRange.end : 0 );
|
|
return tx;
|
|
};
|
|
|
|
/**
|
|
* Generate a transaction that wraps, unwraps or replaces structure.
|
|
*
|
|
* The unwrap parameters are checked against the actual model data, and
|
|
* an exception is thrown if the type fields don't match. This means you
|
|
* can omit attributes from the unwrap parameters, those are automatically
|
|
* picked up from the model data instead.
|
|
*
|
|
* NOTE: This function currently does not fix invalid parent/child relationships, so it will
|
|
* happily convert paragraphs to listItems without wrapping them in a list if that's what you
|
|
* ask it to do. We'll probably fix this later but for now the caller is responsible for giving
|
|
* valid instructions.
|
|
*
|
|
* Changing a paragraph to a header:
|
|
* Before: [ {'type': 'paragraph'}, 'a', 'b', 'c', {'type': '/paragraph'} ]
|
|
* newFromWrap( new ve.Range( 1, 4 ), [ {'type': 'paragraph'} ], [ {'type': 'heading', 'level': 1 } ] );
|
|
* After: [ {'type': 'heading', 'level': 1 }, 'a', 'b', 'c', {'type': '/heading'} ]
|
|
*
|
|
* Changing a set of paragraphs to a list:
|
|
* Before: [ {'type': 'paragraph'}, 'a', {'type': '/paragraph'}, {'type':'paragraph'}, 'b', {'type':'/paragraph'} ]
|
|
* newFromWrap( new ve.Range( 0, 6 ), [], [ {'type': 'list' } ], [], [ {'type': 'listItem', 'attributes': {'styles': ['bullet']}} ] );
|
|
* After: [ {'type': 'list'}, {'type': 'listItem', 'attributes': {'styles': ['bullet']}}, {'type':'paragraph'} 'a',
|
|
* {'type': '/paragraph'}, {'type': '/listItem'}, {'type': 'listItem', 'attributes': {'styles': ['bullet']}},
|
|
* {'type': 'paragraph'}, 'b', {'type': '/paragraph'}, {'type': '/listItem'}, {'type': '/list'} ]
|
|
*
|
|
* @param {ve.dm.Document} doc Document to generate a transaction for
|
|
* @param {ve.Range} range Range to wrap/unwrap/replace around
|
|
* @param {Array} unwrapOuter Opening elements to unwrap. These must be immediately *outside* the range
|
|
* @param {Array} wrapOuter Opening elements to wrap around the range
|
|
* @param {Array} unwrapEach Opening elements to unwrap from each top-level element in the range
|
|
* @param {Array} wrapEach Opening elements to wrap around each top-level element in the range
|
|
* @returns {ve.dm.Transaction}
|
|
*/
|
|
ve.dm.Transaction.newFromWrap = function ( doc, range, unwrapOuter, wrapOuter, unwrapEach, wrapEach ) {
|
|
var i, j, unwrapOuterData, startOffset, unwrapEachData, closingUnwrapEach, closingWrapEach,
|
|
tx = new ve.dm.Transaction(),
|
|
depth = 0;
|
|
|
|
// Function to generate arrays of closing elements in reverse order
|
|
function closingArray( openings ) {
|
|
var closings = [], i, len = openings.length;
|
|
for ( i = 0; i < len; i++ ) {
|
|
closings[closings.length] = { 'type': '/' + openings[len - i - 1].type };
|
|
}
|
|
return closings;
|
|
}
|
|
closingUnwrapEach = closingArray( unwrapEach );
|
|
closingWrapEach = closingArray( wrapEach );
|
|
|
|
// TODO: check for and fix nesting validity like fixupInsertion does
|
|
if ( range.start > unwrapOuter.length ) {
|
|
// Retain up to the first thing we're unwrapping
|
|
// The outer unwrapping takes place *outside*
|
|
// the range, so compensate for that
|
|
tx.pushRetain( range.start - unwrapOuter.length );
|
|
} else if ( range.start < unwrapOuter.length ) {
|
|
throw new Error( 'unwrapOuter is longer than the data preceding the range' );
|
|
}
|
|
|
|
// Replace the opening elements for the outer unwrap&wrap
|
|
if ( wrapOuter.length > 0 || unwrapOuter.length > 0 ) {
|
|
// Verify that wrapOuter matches the data at this position
|
|
unwrapOuterData = doc.data.slice( range.start - unwrapOuter.length, range.start );
|
|
for ( i = 0; i < unwrapOuterData.length; i++ ) {
|
|
if ( unwrapOuterData[i].type !== unwrapOuter[i].type ) {
|
|
throw new Error( 'Element in unwrapOuter does not match: expected ' +
|
|
unwrapOuter[i].type + ' but found ' + unwrapOuterData[i].type );
|
|
}
|
|
}
|
|
// Instead of putting in unwrapOuter as given, put it in the
|
|
// way it appears in the model so we pick up any attributes
|
|
tx.pushReplace( doc, range.start - unwrapOuter.length, unwrapOuter.length, ve.copy( wrapOuter ) );
|
|
}
|
|
|
|
if ( wrapEach.length > 0 || unwrapEach.length > 0 ) {
|
|
// Visit each top-level child and wrap/unwrap it
|
|
// TODO figure out if we should use the tree/node functions here
|
|
// rather than iterating over offsets, it may or may not be faster
|
|
for ( i = range.start; i < range.end; i++ ) {
|
|
if ( doc.data.isElementData( i ) ) {
|
|
// This is a structural offset
|
|
if ( !doc.data.isCloseElementData( i ) ) {
|
|
// This is an opening element
|
|
if ( depth === 0 ) {
|
|
// We are at the start of a top-level element
|
|
// Replace the opening elements
|
|
|
|
// Verify that unwrapEach matches the data at this position
|
|
unwrapEachData = doc.data.slice( i, i + unwrapEach.length );
|
|
for ( j = 0; j < unwrapEachData.length; j++ ) {
|
|
if ( unwrapEachData[j].type !== unwrapEach[j].type ) {
|
|
throw new Error( 'Element in unwrapEach does not match: expected ' +
|
|
unwrapEach[j].type + ' but found ' +
|
|
unwrapEachData[j].type );
|
|
}
|
|
}
|
|
// Instead of putting in unwrapEach as given, put it in the
|
|
// way it appears in the model, so we pick up any attributes
|
|
tx.pushReplace( doc, i, unwrapEach.length, ve.copy( wrapEach ) );
|
|
|
|
// Store this offset for later
|
|
startOffset = i + unwrapEach.length;
|
|
}
|
|
depth++;
|
|
} else {
|
|
// This is a closing element
|
|
depth--;
|
|
if ( depth === 0 ) {
|
|
// We are at the end of a top-level element
|
|
// Advance past the element, then back up past the unwrapEach
|
|
j = ( i + 1 ) - unwrapEach.length;
|
|
// Retain the contents of what we're wrapping
|
|
tx.pushRetain( j - startOffset );
|
|
// Replace the closing elements
|
|
tx.pushReplace( doc, j, unwrapEach.length, ve.copy( closingWrapEach ) );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
// There is no wrapEach/unwrapEach to be done, just retain
|
|
// up to the end of the range
|
|
tx.pushRetain( range.end - range.start );
|
|
}
|
|
|
|
// this is a no-op if unwrapOuter.length===0 and wrapOuter.length===0
|
|
tx.pushReplace( doc, range.end, unwrapOuter.length, closingArray( wrapOuter ) );
|
|
|
|
// Retain up to the end of the document
|
|
tx.pushFinalRetain( doc, range.end + unwrapOuter.length );
|
|
|
|
return tx;
|
|
};
|
|
|
|
/**
|
|
* Specification for how each type of operation should be reversed.
|
|
*
|
|
* This object maps operation types to objects, which map property names to reversal instructions.
|
|
* A reversal instruction is either a string (which means the value of that property should be used)
|
|
* or an object (which maps old values to new values). For instance, { 'from': 'to' }
|
|
* means that the .from property of the reversed operation should be set to the .to property of the
|
|
* original operation, and { 'method': { 'set': 'clear' } } means that if the .method property of
|
|
* the original operation was 'set', the reversed operation's .method property should be 'clear'.
|
|
*
|
|
* If a property's treatment isn't specified, its value is simply copied without modification.
|
|
* If an operation type's treatment isn't specified, all properties are copied without modification.
|
|
*
|
|
* @type {Object.<string,Object.<string,string|Object.<string, string>>>}
|
|
*/
|
|
ve.dm.Transaction.reversers = {
|
|
'annotate': { 'method': { 'set': 'clear', 'clear': 'set' } }, // swap 'set' with 'clear'
|
|
'attribute': { 'from': 'to', 'to': 'from' }, // swap .from with .to
|
|
'replace': { // swap .insert with .remove and .insertMetadata with .removeMetadata
|
|
'insert': 'remove',
|
|
'remove': 'insert',
|
|
'insertMetadata': 'removeMetadata',
|
|
'removeMetadata': 'insertMetadata'
|
|
},
|
|
'replaceMetadata': { 'insert': 'remove', 'remove': 'insert' } // swap .insert with .remove
|
|
};
|
|
|
|
/* Methods */
|
|
|
|
/**
|
|
* Create a clone of this transaction.
|
|
*
|
|
* The returned transaction will be exactly the same as this one, except that its 'applied' flag
|
|
* will be cleared. This means that if a transaction has already been committed, it will still
|
|
* be possible to commit the clone. This is used for redoing transactions that were undone.
|
|
*
|
|
* @returns {ve.dm.Transaction} Clone of this transaction
|
|
*/
|
|
ve.dm.Transaction.prototype.clone = function () {
|
|
var tx = new this.constructor();
|
|
tx.operations = ve.copy( this.operations );
|
|
tx.lengthDifference = this.lengthDifference;
|
|
return tx;
|
|
};
|
|
|
|
/**
|
|
* Create a reversed version of this transaction.
|
|
*
|
|
* The returned transaction will be the same as this one but with all operations reversed. This
|
|
* means that applying the original transaction and then applying the reversed transaction will
|
|
* result in no net changes. This is used to undo transactions.
|
|
*
|
|
* @returns {ve.dm.Transaction} Reverse of this transaction
|
|
*/
|
|
ve.dm.Transaction.prototype.reversed = function () {
|
|
var i, len, op, newOp, reverse, prop, tx = new this.constructor();
|
|
for ( i = 0, len = this.operations.length; i < len; i++ ) {
|
|
op = this.operations[i];
|
|
newOp = ve.copy( op );
|
|
reverse = this.constructor.reversers[op.type] || {};
|
|
for ( prop in reverse ) {
|
|
if ( typeof reverse[prop] === 'string' ) {
|
|
newOp[prop] = op[reverse[prop]];
|
|
} else {
|
|
newOp[prop] = reverse[prop][op[prop]];
|
|
}
|
|
}
|
|
tx.operations.push( newOp );
|
|
}
|
|
tx.lengthDifference = -this.lengthDifference;
|
|
return tx;
|
|
};
|
|
|
|
/**
|
|
* Check if the transaction would make any actual changes if processed.
|
|
*
|
|
* There may be more sophisticated checks that can be done, like looking for things being replaced
|
|
* with identical content, but such transactions probably should not be created in the first place.
|
|
*
|
|
* @method
|
|
* @returns {boolean} Transaction is no-op
|
|
*/
|
|
ve.dm.Transaction.prototype.isNoOp = function () {
|
|
return (
|
|
this.operations.length === 0 ||
|
|
( this.operations.length === 1 && this.operations[0].type === 'retain' )
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Get all operations.
|
|
*
|
|
* @method
|
|
* @returns {Object[]} List of operations
|
|
*/
|
|
ve.dm.Transaction.prototype.getOperations = function () {
|
|
return this.operations;
|
|
};
|
|
|
|
/**
|
|
* Check if the transaction has any operations with a certain type.
|
|
*
|
|
* @method
|
|
* @returns {boolean} Has operations of a given type
|
|
*/
|
|
ve.dm.Transaction.prototype.hasOperationWithType = function ( type ) {
|
|
var i, len;
|
|
for ( i = 0, len = this.operations.length; i < len; i++ ) {
|
|
if ( this.operations[i].type === type ) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
};
|
|
|
|
/**
|
|
* Check if the transaction has any content data operations, such as insertion or deletion.
|
|
*
|
|
* @method
|
|
* @returns {boolean} Has content data operations
|
|
*/
|
|
ve.dm.Transaction.prototype.hasContentDataOperations = function () {
|
|
return this.hasOperationWithType( 'replace' );
|
|
};
|
|
|
|
/**
|
|
* Check if the transaction has any element attribute operations.
|
|
*
|
|
* @method
|
|
* @returns {boolean} Has element attribute operations
|
|
*/
|
|
ve.dm.Transaction.prototype.hasElementAttributeOperations = function () {
|
|
return this.hasOperationWithType( 'attribute' );
|
|
};
|
|
|
|
/**
|
|
* Check if the transaction has any annotation operations.
|
|
*
|
|
* @method
|
|
* @returns {boolean} Has annotation operations
|
|
*/
|
|
ve.dm.Transaction.prototype.hasAnnotationOperations = function () {
|
|
return this.hasOperationWithType( 'annotate' );
|
|
};
|
|
|
|
/**
|
|
* Get the difference in content length the transaction will cause if applied.
|
|
*
|
|
* @method
|
|
* @returns {number} Difference in content length
|
|
*/
|
|
ve.dm.Transaction.prototype.getLengthDifference = function () {
|
|
return this.lengthDifference;
|
|
};
|
|
|
|
/**
|
|
* Check whether the transaction has already been applied.
|
|
*
|
|
* @method
|
|
* @returns {boolean}
|
|
*/
|
|
ve.dm.Transaction.prototype.hasBeenApplied = function () {
|
|
return this.applied;
|
|
};
|
|
|
|
/**
|
|
* Mark the transaction as having been applied.
|
|
*
|
|
* Should only be called after committing the transaction.
|
|
*
|
|
* @see ve.dm.Transaction#hasBeenApplied
|
|
*/
|
|
ve.dm.Transaction.prototype.markAsApplied = function () {
|
|
this.applied = true;
|
|
};
|
|
|
|
/**
|
|
* Translate an offset based on a transaction.
|
|
*
|
|
* This is useful when you want to anticipate what an offset will be after a transaction is
|
|
* processed.
|
|
*
|
|
* @method
|
|
* @param {number} offset Offset in the linear model before the transaction has been processed
|
|
* @param {boolean} [excludeInsertion] Map the offset immediately before an insertion to
|
|
* right before the insertion rather than right after
|
|
* @returns {number} Translated offset, as it will be after processing transaction
|
|
*/
|
|
ve.dm.Transaction.prototype.translateOffset = function ( offset, excludeInsertion ) {
|
|
var i, op, insertLength, removeLength, prevAdjustment, cursor = 0, adjustment = 0;
|
|
for ( i = 0; i < this.operations.length; i++ ) {
|
|
op = this.operations[i];
|
|
if ( op.type === 'replace' ) {
|
|
insertLength = op.insert.length;
|
|
removeLength = op.remove.length;
|
|
prevAdjustment = adjustment;
|
|
adjustment += insertLength - removeLength;
|
|
if ( offset === cursor + removeLength ) {
|
|
// Offset points to right after the removal or right before the insertion
|
|
if ( excludeInsertion && insertLength > removeLength ) {
|
|
// Translate it to before the insertion
|
|
return offset + adjustment - insertLength + removeLength;
|
|
} else {
|
|
// Translate it to after the removal/insertion
|
|
return offset + adjustment;
|
|
}
|
|
} else if ( offset === cursor ) {
|
|
// The offset points to right before the removal or replacement
|
|
if ( insertLength === 0 ) {
|
|
// Translate it to after the removal
|
|
return cursor + removeLength + adjustment;
|
|
} else {
|
|
// Translate it to before the replacement
|
|
// To translate this correctly, we have to use adjustment as it was before
|
|
// we adjusted it for this replacement
|
|
return cursor + prevAdjustment;
|
|
}
|
|
} else if ( offset > cursor && offset < cursor + removeLength ) {
|
|
// The offset points inside of the removal
|
|
// Translate it to after the removal
|
|
return cursor + removeLength + adjustment;
|
|
}
|
|
cursor += removeLength;
|
|
} else if ( op.type === 'retain' ) {
|
|
if ( offset >= cursor && offset < cursor + op.length ) {
|
|
return offset + adjustment;
|
|
}
|
|
cursor += op.length;
|
|
}
|
|
}
|
|
return offset + adjustment;
|
|
};
|
|
|
|
/**
|
|
* Translate a range based on a transaction.
|
|
*
|
|
* This is useful when you want to anticipate what a selection will be after a transaction is
|
|
* processed.
|
|
*
|
|
* @method
|
|
* @see #translateOffset
|
|
* @param {ve.Range} range Range in the linear model before the transaction has been processed
|
|
* @returns {ve.Range} Translated range, as it will be after processing transaction
|
|
*/
|
|
ve.dm.Transaction.prototype.translateRange = function ( range ) {
|
|
var start = this.translateOffset( range.start, true ),
|
|
end = this.translateOffset( range.end, false );
|
|
return range.isBackwards() ? new ve.Range( end, start ) : new ve.Range( start, end );
|
|
};
|
|
|
|
/**
|
|
* Add a final retain operation to finish off a transaction (internal helper).
|
|
*
|
|
* @private
|
|
* @method
|
|
* @param {ve.dm.Document} doc Document to finish off.
|
|
* @param {number} Final offset edited by the transaction up to this point.
|
|
* @param {number} [metaOffset=0] Final metadata offset edited, if nonzero.
|
|
*/
|
|
ve.dm.Transaction.prototype.pushFinalRetain = function ( doc, offset, metaOffset ) {
|
|
var data = doc.data,
|
|
metadata = doc.metadata,
|
|
finalMetadata = metadata.getData( data.getLength() );
|
|
if ( offset < doc.data.getLength() ) {
|
|
this.pushRetain( doc.data.getLength() - offset );
|
|
metaOffset = 0;
|
|
}
|
|
// if there is trailing metadata, push a final retainMetadata
|
|
if ( finalMetadata !== undefined && finalMetadata.length > 0 ) {
|
|
this.pushRetainMetadata( finalMetadata.length - ( metaOffset || 0 ) );
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Add a retain operation.
|
|
*
|
|
* @method
|
|
* @param {number} length Length of content data to retain
|
|
* @throws {Error} Cannot retain backwards
|
|
*/
|
|
ve.dm.Transaction.prototype.pushRetain = function ( length ) {
|
|
if ( length < 0 ) {
|
|
throw new Error( 'Invalid retain length, cannot retain backwards:' + length );
|
|
}
|
|
if ( length ) {
|
|
var end = this.operations.length - 1;
|
|
if ( this.operations.length && this.operations[end].type === 'retain' ) {
|
|
this.operations[end].length += length;
|
|
} else {
|
|
this.operations.push( {
|
|
'type': 'retain',
|
|
'length': length
|
|
} );
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Add a retain metadata operation.
|
|
* // TODO: this is a copy/paste of pushRetain (at the moment). Consider a refactor.
|
|
*
|
|
* @method
|
|
* @param {number} length Length of content data to retain
|
|
* @throws {Error} Cannot retain backwards
|
|
*/
|
|
ve.dm.Transaction.prototype.pushRetainMetadata = function ( length ) {
|
|
if ( length < 0 ) {
|
|
throw new Error( 'Invalid retain length, cannot retain backwards:' + length );
|
|
}
|
|
if ( length ) {
|
|
var end = this.operations.length - 1;
|
|
if ( this.operations.length && this.operations[end].type === 'retainMetadata' ) {
|
|
this.operations[end].length += length;
|
|
} else {
|
|
this.operations.push( {
|
|
'type': 'retainMetadata',
|
|
'length': length
|
|
} );
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Adds a replace op to remove the desired range and, where required, splices in retain ops
|
|
* to prevent the deletion of internal data.
|
|
*
|
|
* An extra `replaceMetadata` operation might be pushed at the end if the
|
|
* affected region contains metadata; see
|
|
* {@link ve.dm.Transaction#pushReplace} for details.
|
|
*
|
|
* @param {ve.dm.Document} doc Document
|
|
* @param {number} removeStart Offset to start removing from
|
|
* @param {number} removeEnd Offset to remove to
|
|
* @param {boolean} [removeMetadata=false] Remove metadata instead of collapsing it
|
|
*/
|
|
ve.dm.Transaction.prototype.addSafeRemoveOps = function ( doc, removeStart, removeEnd, removeMetadata ) {
|
|
var i, retainStart, internalStackDepth = 0;
|
|
// Iterate over removal range and use a stack counter to determine if
|
|
// we are inside an internal node
|
|
for ( i = removeStart; i < removeEnd; i++ ) {
|
|
if ( doc.data.isElementData( i ) && ve.dm.nodeFactory.isNodeInternal( doc.data.getType( i ) ) ) {
|
|
if ( !doc.data.isCloseElementData( i ) ) {
|
|
if ( internalStackDepth === 0 ) {
|
|
this.pushReplace( doc, removeStart, i - removeStart, [], removeMetadata ? [] : undefined );
|
|
retainStart = i;
|
|
}
|
|
internalStackDepth++;
|
|
} else {
|
|
internalStackDepth--;
|
|
if ( internalStackDepth === 0 ) {
|
|
this.pushRetain( i + 1 - retainStart );
|
|
removeStart = i + 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
this.pushReplace( doc, removeStart, removeEnd - removeStart, [], removeMetadata ? [] : undefined );
|
|
};
|
|
|
|
/**
|
|
* Add a replace operation, keeping metadata in sync if required.
|
|
*
|
|
* Note that metadata attached to removed content is moved so that it
|
|
* attaches just before the inserted content. If there is
|
|
* metadata attached to the removed content but there is no inserted
|
|
* content, then an extra `replaceMetadata` operation is pushed in order
|
|
* to properly insert the merged metadata before the character immediately
|
|
* after the removed content. (Note that there is an extra metadata element
|
|
* after the final data element; if the removed region is at the very end of
|
|
* the document, the inserted `replaceMetadata` operation targets this
|
|
* final metadata element.)
|
|
*
|
|
* @method
|
|
* @param {ve.dm.Document} doc Document model
|
|
* @param {number} offset Offset to start at
|
|
* @param {number} removeLength Number of data items to remove
|
|
* @param {Array} insert Data to insert
|
|
* @param {Array} [insertMetadata] Overwrite the metadata with this data, rather than collapsing it
|
|
*/
|
|
ve.dm.Transaction.prototype.pushReplace = function ( doc, offset, removeLength, insert, insertMetadata ) {
|
|
if ( removeLength === 0 && insert.length === 0 ) {
|
|
// Don't push no-ops
|
|
return;
|
|
}
|
|
|
|
var op, extraMetadata, end = this.operations.length - 1,
|
|
lastOp = end >= 0 ? this.operations[end] : null,
|
|
penultOp = end >= 1 ? this.operations[ end - 1 ] : null,
|
|
range = new ve.Range( offset, offset + removeLength ),
|
|
remove = doc.getData( range ),
|
|
removeMetadata = doc.getMetadata( range ),
|
|
isRemoveEmpty = ve.compare( removeMetadata, new Array( removeMetadata.length ) ),
|
|
isInsertEmpty = insertMetadata && ve.compare( insertMetadata, new Array( insertMetadata.length ) );
|
|
|
|
if ( !insertMetadata && !isRemoveEmpty ) {
|
|
// if we are removing a range which includes metadata, we need to
|
|
// collapse it. If there's nothing to insert, we also need to add
|
|
// an extra `replaceMetadata` operation later in order to insert the
|
|
// collapsed metadata.
|
|
insertMetadata = ve.dm.MetaLinearData.static.merge( removeMetadata );
|
|
if ( insert.length === 0 ) {
|
|
extraMetadata = insertMetadata[0];
|
|
insertMetadata = [];
|
|
} else {
|
|
// pad out at end so insert metadata is the same length as insert data
|
|
ve.batchSplice( insertMetadata, 1, 0, new Array( insert.length - 1 ) );
|
|
}
|
|
} else if ( isInsertEmpty && isRemoveEmpty ) {
|
|
// No metadata changes, don't pollute the transaction with [undefined, undefined, ...]
|
|
insertMetadata = undefined;
|
|
}
|
|
|
|
// simple replaces can be combined
|
|
// (but don't do this if there is metadata to be removed and the previous
|
|
// replace had a non-zero insertion, because that would shift the metadata
|
|
// location.)
|
|
if (
|
|
lastOp && lastOp.type === 'replaceMetadata' &&
|
|
lastOp.insert.length > 0 && lastOp.remove.length === 0 &&
|
|
penultOp && penultOp.type === 'replace' &&
|
|
penultOp.insert.length === 0 /* this is always true */
|
|
) {
|
|
this.operations.pop();
|
|
lastOp = penultOp;
|
|
/* fall through */
|
|
}
|
|
if (
|
|
lastOp && lastOp.type === 'replace' &&
|
|
!( lastOp.insert.length > 0 && insertMetadata !== undefined )
|
|
) {
|
|
lastOp = this.operations.pop();
|
|
this.lengthDifference -= lastOp.insert.length - lastOp.remove.length;
|
|
this.pushReplace(
|
|
doc,
|
|
offset - lastOp.remove.length,
|
|
lastOp.remove.length + removeLength,
|
|
lastOp.insert.concat( insert )
|
|
);
|
|
return;
|
|
}
|
|
|
|
if ( lastOp && lastOp.type === 'replaceMetadata' ) {
|
|
// `replace` operates on the metadata at the given offset; the transaction
|
|
// touches the same region twice if `replace` follows a `replaceMetadata`
|
|
// without a `retain` in between.
|
|
throw new Error( 'replace after replaceMetadata not allowed' );
|
|
}
|
|
|
|
op = {
|
|
'type': 'replace',
|
|
'remove': remove,
|
|
'insert': insert
|
|
};
|
|
if ( insertMetadata !== undefined ) {
|
|
op.removeMetadata = removeMetadata;
|
|
op.insertMetadata = insertMetadata;
|
|
}
|
|
this.operations.push( op );
|
|
this.lengthDifference += insert.length - remove.length;
|
|
if ( extraMetadata !== undefined ) {
|
|
this.pushReplaceMetadata( [], extraMetadata );
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Add a replace metadata operation
|
|
*
|
|
* @method
|
|
* @param {Array} remove Metadata to remove
|
|
* @param {Array} insert Metadata to replace 'remove' with
|
|
*/
|
|
ve.dm.Transaction.prototype.pushReplaceMetadata = function ( remove, insert ) {
|
|
if ( remove.length === 0 && insert.length === 0 ) {
|
|
// Don't push no-ops
|
|
return;
|
|
}
|
|
this.operations.push( {
|
|
'type': 'replaceMetadata',
|
|
'remove': remove,
|
|
'insert': insert
|
|
} );
|
|
};
|
|
|
|
/**
|
|
* Add an element attribute change operation.
|
|
*
|
|
* @method
|
|
* @param {string} key Name of attribute to change
|
|
* @param {Mixed} from Value change attribute from, or undefined if not previously set
|
|
* @param {Mixed} to Value to change attribute to, or undefined to remove
|
|
*/
|
|
ve.dm.Transaction.prototype.pushReplaceElementAttribute = function ( key, from, to ) {
|
|
this.operations.push( {
|
|
'type': 'attribute',
|
|
'key': key,
|
|
'from': from,
|
|
'to': to
|
|
} );
|
|
};
|
|
|
|
/**
|
|
* Add a start annotating operation.
|
|
*
|
|
* @method
|
|
* @param {string} method Method to use, either "set" or "clear"
|
|
* @param {Object} annotation Annotation object to start setting or clearing from content data
|
|
*/
|
|
ve.dm.Transaction.prototype.pushStartAnnotating = function ( method, annotation ) {
|
|
this.operations.push( {
|
|
'type': 'annotate',
|
|
'method': method,
|
|
'bias': 'start',
|
|
'annotation': annotation
|
|
} );
|
|
};
|
|
|
|
/**
|
|
* Add a stop annotating operation.
|
|
*
|
|
* @method
|
|
* @param {string} method Method to use, either "set" or "clear"
|
|
* @param {Object} annotation Annotation object to stop setting or clearing from content data
|
|
*/
|
|
ve.dm.Transaction.prototype.pushStopAnnotating = function ( method, annotation ) {
|
|
this.operations.push( {
|
|
'type': 'annotate',
|
|
'method': method,
|
|
'bias': 'stop',
|
|
'annotation': annotation
|
|
} );
|
|
};
|