diff options
Diffstat (limited to 'src/client/util/SelectionManager.ts')
| -rw-r--r-- | src/client/util/SelectionManager.ts | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/client/util/SelectionManager.ts b/src/client/util/SelectionManager.ts index 730db4f29..7795a4a59 100644 --- a/src/client/util/SelectionManager.ts +++ b/src/client/util/SelectionManager.ts @@ -73,8 +73,8 @@ export namespace SelectionManager { // computed functions, such as used in IsSelected generate errors if they're called outside of a // reaction context. Specifying the context with 'outsideReaction' allows an efficiency feature // to avoid unnecessary mobx invalidations when running inside a reaction. - export function IsSelected(doc: DocumentView, outsideReaction?: boolean): boolean { - return outsideReaction ? + export function IsSelected(doc: DocumentView | undefined, outsideReaction?: boolean): boolean { + return !doc ? false : outsideReaction ? manager.SelectedDocuments.get(doc) ? true : false : // get() accesses a hashtable -- setting anything in the hashtable generates a mobx invalidation for every get() computedFn(function isSelected(doc: DocumentView) { // wraapping get() in a computedFn only generates mobx() invalidations when the return value of the function for the specific get parameters has changed return manager.SelectedDocuments.get(doc) ? true : false; |