@startuml
skinparam BackgroundColor F0F0F0
participant "Application" as app
box "Application Manager Service" #LightBlue
participant "Controller" as appmgr_control
participant "Application Manager" as appmgr
participant "Applications Registry" as app_reg
end box
participant "SMS Application" as sms_app

app -> appmgr_control: Send "SendSms" action
appmgr_control -> appmgr: Forward "SendSms" action
appmgr -> app_reg: Find applications registered\nas "SendSms" action handlers
alt Application 1 is closeable
    appmgr -> app: Close
else
    appmgr -> app: Focus lost
end
app -> appmgr: Confirm
appmgr -> sms_app: Start
@enduml