Esanders has uploaded a new change for review.
https://gerrit.wikimedia.org/r/75863
Change subject: Optimise history stack truncation
......................................................................
Optimise history stack truncation
If undoIndex is 0 then we don't need to do anything, or even
emit the history event which is quite expensive as it triggers
various node redraws.
Bug: 52012
Change-Id: I09ca2d6cd0f4cbaf8316819dab0bd6edfc5de62c
---
M modules/ve/dm/ve.dm.Surface.js
1 file changed, 5 insertions(+), 3 deletions(-)
git pull ssh://gerrit.wikimedia.org:29418/mediawiki/extensions/VisualEditor
refs/changes/63/75863/1
diff --git a/modules/ve/dm/ve.dm.Surface.js b/modules/ve/dm/ve.dm.Surface.js
index 93606d2..3790c2b 100644
--- a/modules/ve/dm/ve.dm.Surface.js
+++ b/modules/ve/dm/ve.dm.Surface.js
@@ -273,9 +273,11 @@
* @emits history
*/
ve.dm.Surface.prototype.truncateUndoStack = function () {
- this.bigStack = this.bigStack.slice( 0, this.bigStack.length -
this.undoIndex );
- this.undoIndex = 0;
- this.emit( 'history' );
+ if ( this.undoIndex ) {
+ this.bigStack = this.bigStack.slice( 0, this.bigStack.length -
this.undoIndex );
+ this.undoIndex = 0;
+ this.emit( 'history' );
+ }
};
/**
--
To view, visit https://gerrit.wikimedia.org/r/75863
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I09ca2d6cd0f4cbaf8316819dab0bd6edfc5de62c
Gerrit-PatchSet: 1
Gerrit-Project: mediawiki/extensions/VisualEditor
Gerrit-Branch: master
Gerrit-Owner: Esanders <[email protected]>
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