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Added inline comment explaining not obvious purpose of code

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Change-Id: Ib9ea1307ebe58c03abd00dcf8b96681d6901a3d4
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Inez Korczyński 2013-04-18 13:39:56 -07:00
parent d54cf4c131
commit d809dc7e37
1 changed files with 7 additions and 0 deletions
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7
modules/ve/ce/ve.ce.ContentBranchNode.js
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@ -24,6 +24,13 @@ ve.ce.ContentBranchNode = function VeCeContentBranchNode( model, $element ) {
var lastTransaction;
// Events
// Main purpose of code below is to increase performance by ensuring that renderContents() is
// called exactly once after transaction is processed. Case when childUpdate event is received
// multiple times is for instance when entire paragraph with multiple nodes inside it
// (e.g. <p>123<alien></alien>456</p>) is being annotated.
// Keeping reference to transaction object in view may look like anti pattern - however please
// have in mind that this transaction here is not being used in any other way than just as
// a flag to figure out if renderContents should be executed or not.
this.on( 'childUpdate', ve.bind( function( transaction ) {
if ( lastTransaction !== transaction ) {
lastTransaction = transaction;