控件setVisible为false会导致控件被移除

Created by Jerry Wang, last modified on Aug 20, 2015

• deregister
• Element
• delete
• mElements
  
  trigger point:
  
  对50个binding逐一检查: checkUpdate
  
  

发送change event:

scenario是:

1. AppointmentDetail view执行onInit, 将attachment panel置为false
2. AppointmentDetail view里发送odata request
3. Odata request response handler触发 control deregisitration