tree 581108a6e5501488572f32a3645cc6ac6092b9e3
parent af5abc5785535f4e059a35be60dbbd012c61facf
author Lei YU <mine260309@gmail.com> 1486611446 +0800
committer Lei YU <mine260309@gmail.com> 1508069734 +0800

Add time Manager to handle property changes callback

1. Implement time::Manager who registers property change signal for time
mode and owner;
2. Add PropertyChangeListner interface to handle the callback;
3. Make EpochBase to implement the interface.

Change-Id: I185580ae37353e1ed82a47e4905fb22e269ac09d
Signed-off-by: Lei YU <mine260309@gmail.com>