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fix(thread-list): Cache MailLabel component instances to prevent needless rendering

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This commit is contained in:
Ben Gotow 2015-07-23 14:30:32 -07:00
parent 7dfeabf7c9
commit 45fd754fd3
1 changed files with 6 additions and 1 deletions
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7
internal_packages/thread-list/lib/thread-list.cjsx
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@ -79,6 +79,8 @@ class ThreadList extends React.Component
else
<ThreadListParticipants thread={thread} />
c3LabelComponentCache = {}
c3 = new ListTabular.Column
name: "Message"
flex: 4
@ -92,9 +94,12 @@ class ThreadList extends React.Component
currentCategoryId = FocusedCategoryStore.categoryId()
allCategoryId = CategoryStore.getStandardCategory('all')?.id
ignoredIds = [currentCategoryId, allCategoryId]
for label in (thread.sortedLabels() ? [])
continue if label.id in ignoredIds
labels.push <MailLabel label={label} key={label.id} />
if not c3LabelComponentCache[label.id]
c3LabelComponentCache[label.id] = <MailLabel label={label} key={label.id} />
labels.push c3LabelComponentCache[label.id]
<span className="details">
{labels}