Esanders has uploaded a new change for review. (
https://gerrit.wikimedia.org/r/363644 )
Change subject: Rewrite VE<->CM synchronizer using transaction op walking
......................................................................
Rewrite VE<->CM synchronizer using transaction op walking
Previous hacky method fell apart with multi-line transactions.
Depends-On: I465a3f6a8afcd6536293999eb40c01daeb9d905b
Change-Id: I66946d7e3f425d8dbbdae720756a7978fbe25582
---
M resources/modules/ve-cm/ve.ui.CodeMirrorAction.js
1 file changed, 50 insertions(+), 32 deletions(-)
git pull ssh://gerrit.wikimedia.org:29418/mediawiki/extensions/CodeMirror
refs/changes/44/363644/1
diff --git a/resources/modules/ve-cm/ve.ui.CodeMirrorAction.js
b/resources/modules/ve-cm/ve.ui.CodeMirrorAction.js
index effe1de..14d49d7 100644
--- a/resources/modules/ve-cm/ve.ui.CodeMirrorAction.js
+++ b/resources/modules/ve-cm/ve.ui.CodeMirrorAction.js
@@ -65,11 +65,11 @@
// As the action is regenerated each time, we need to store the
bound listener
// in the mirror for later disconnection.
- surface.mirror.veTransactionListener =
this.onDocumentTransact.bind( this, surface );
+ surface.mirror.veTransactionListener =
this.onDocumentPrecommit.bind( this );
- doc.on( 'transact', surface.mirror.veTransactionListener );
+ doc.on( 'precommit', surface.mirror.veTransactionListener );
} else if ( surface.mirror && enable !== true ) {
- doc.off( 'transact', surface.mirror.veTransactionListener );
+ doc.off( 'precommit', surface.mirror.veTransactionListener );
surfaceView.$documentNode.removeClass(
've-ce-documentNode-codeEditor-webkit-hide
ve-ce-documentNode-codeEditor-webkit'
@@ -83,37 +83,55 @@
return true;
};
-ve.ui.CodeMirrorAction.prototype.onDocumentTransact = function ( surface, tx )
{
- var node, textRange, line,
- doc = surface.getModel().getDocument(),
- mirror = surface.mirror,
- modifiedRange = tx.getModifiedRange( doc ),
- nodes = doc.selectNodes( modifiedRange, 'leaves' );
+/**
+ * Handle precommit events from the document.
+ *
+ * The document is still in it's 'old' state before the transaction
+ * has been applied at this point.
+ *
+ * @param {ve.dm.Transaction} tx [description]
+ */
+ve.ui.CodeMirrorAction.prototype.onDocumentPrecommit = function ( tx ) {
+ var i,
+ offset = 0,
+ replacements = [],
+ linearData = this.surface.getModel().getDocument().data,
+ store = linearData.getStore(),
+ mirror = this.surface.mirror;
- // TODO: Iterate over operations and perform a replaceRange for each
replace operation
- if ( nodes.length === 1 && nodes[ 0 ].node instanceof ve.dm.TextNode ) {
- node = nodes[ 0 ].node.parent;
- textRange = nodes[ 0 ].nodeRange;
- line = node.parent.children.indexOf( node );
- if ( tx.operations.every( function ( op ) {
- return op.type === 'retain' || ( op.type === 'replace'
&& op.remove.length === 0 );
- } ) ) {
- // Single line insert
- mirror.replaceRange(
- doc.data.getText( true, modifiedRange ),
- { line: line, ch: modifiedRange.start -
textRange.start }
- );
- } else {
- // Single line replace
- mirror.replaceRange(
- doc.data.getText( true, textRange ),
- { line: line, ch: 0 },
- { line: line, ch: mirror.getLine( line ).length
}
- );
+ /**
+ * Convert a VE offset to a 2D CodeMirror position
+ *
+ * @private
+ * @param {Number} veOffset VE linear model offset
+ * @return {Object} Code mirror position, containing 'line' and 'ch'
+ */
+ function convertOffset( veOffset ) {
+ var cmOffset = linearData.getSourceText( new ve.Range( 0,
veOffset ) ).length;
+ return mirror.posFromIndex( cmOffset );
+ }
+
+ tx.operations.forEach( function ( op ) {
+ if ( op.type === 'retain' ) {
+ offset += op.length;
+ } else if ( op.type === 'replace' ) {
+ replacements.push( {
+ start: convertOffset( offset ),
+ // Don't bother recalculating end offset if not
a removal, replaceRange works with just one arg
+ end: op.remove.length ? convertOffset( offset +
op.remove.length ) : undefined,
+ data: new ve.dm.ElementLinearData( store,
op.insert ).getSourceText()
+ } );
+ offset += op.remove.length;
}
- } else {
- // Fallback - flush whole doc
- mirror.setValue( surface.getDom() );
+ } );
+
+ // Apply replacements in reverse to avoid having to shift offsets
+ for ( i = replacements.length - 1; i >= 0; i-- ) {
+ mirror.replaceRange(
+ replacements[ i ].data,
+ replacements[ i ].start,
+ replacements[ i ].end
+ );
}
};
--
To view, visit https://gerrit.wikimedia.org/r/363644
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings
Gerrit-MessageType: newchange
Gerrit-Change-Id: I66946d7e3f425d8dbbdae720756a7978fbe25582
Gerrit-PatchSet: 1
Gerrit-Project: mediawiki/extensions/CodeMirror
Gerrit-Branch: master
Gerrit-Owner: Esanders <esand...@wikimedia.org>
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