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More clarity on cache updating

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This commit is contained in:
Kegan Dougal
2015-10-21 14:07:14 +01:00
parent 25112ede58
commit 02b836698c
1 changed files with 9 additions and 5 deletions
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14
lib/models/room-state.js
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@@ -206,15 +206,19 @@ function _updateDisplayNameCache(roomState, userId, displayName) {
var oldName = roomState._userIdsToDisplayNames[userId]; var oldName = roomState._userIdsToDisplayNames[userId];
delete roomState._userIdsToDisplayNames[userId]; delete roomState._userIdsToDisplayNames[userId];
if (oldName) { if (oldName) {
var existing = roomState._displayNameToUserIds[oldName] || []; // Remove the old name from the cache.
for (var i = 0; i < existing.length; i++) { // We clobber the user_id > name lookup but the name -> [user_id] lookup
if (existing[i] === userId) { // means we need to remove that user ID from that array rather than nuking
// the lot.
var existingUserIds = roomState._displayNameToUserIds[oldName] || [];
for (var i = 0; i < existingUserIds.length; i++) {
if (existingUserIds[i] === userId) {
// remove this user ID from this array // remove this user ID from this array
existing.splice(i, 1); existingUserIds.splice(i, 1);
i--; i--;
} }
} }
roomState._displayNameToUserIds[oldName] = existing; roomState._displayNameToUserIds[oldName] = existingUserIds;
} }
roomState._userIdsToDisplayNames[userId] = displayName; roomState._userIdsToDisplayNames[userId] = displayName;