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Code Issues Releases Wiki Activity

Prevent out of bounce case when iterating over filteredMessages

This commit is contained in:
Tankred Hase 2014-04-29 22:59:25 +02:00
parent 2ec4982889
commit 4cf83fd6f1
1 changed files with 4 additions and 2 deletions
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6
src/js/controller/mail-list.js
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@ -453,11 +453,13 @@ define(function(require) {
// the n-th list item (the dom representation of an email) corresponds to
// the n-th message model in the filteredMessages array
listItem = listItems.item(i).getBoundingClientRect();
message = scope.filteredMessages[i];
if (!message) {
if (!scope.filteredMessages || scope.filteredMessages.length <= i) {
// stop if i get larger than the size of filtered messages
break;
}
message = scope.filteredMessages[i];
isPartiallyVisibleTop = listItem.top < top && listItem.bottom > top; // a portion of the list item is visible on the top
isPartiallyVisibleBottom = listItem.top < bottom && listItem.bottom > bottom; // a portion of the list item is visible on the bottom