change isContentActive to a tri-state to allow turning on/off and default - fixes issues with videobox and others so that content can be turned off reliably. added annotation overlay for treeViews for ppt like slides. lots of fixes to tree view to get layout to be more robust.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/Utils.ts b/src/Utils.ts
index bfb29fe8d..ca1432de2 100644
--- a/src/Utils.ts
+++ b/src/Utils.ts
@@ -448,7 +448,7 @@ export function returnEmptyDoclist() { return [] as any[]; }
 
 export let emptyPath = [];
 
-export function emptyFunction() { }
+export function emptyFunction() { return undefined; }
 
 export function unimplementedFunction() { throw new Error("This function is not implemented, but should be."); }