add modelines

Change-Id: I5d96a2d1e4c1ffcc736af0666d33a1a62ba628c5
coverity#1169845 Uncaught exception

Change-Id: Ifec059d66b92233fbff967a5da6fdc88915eefb1
coverity#1169805 Unchecked return value

Change-Id: I3eef47e4debc6cfde1ef881a3d525f5ec0adf431
set mnemonic widgets

Change-Id: Ia093bcd93bd453f039b0dcba744cb8608158ed43