add event sequence diagram

UML/event.puml

@@ -0,0 +1,55 @@
+@startuml
+
+participant Behavior as b
+participant Dispatcher as d
+entity Event as e
+participant EventQueue as eq
+queue "EventQueue::queue_" as q
+
+== Create an Event ==
+|||
+?->> b ++ : GEN
+b -> e ** : new
+b -> b --++ : pushEvent
+e -> b : getBehavior
+b --> e ++: setBehavior
+e --> b --
+b -> d ++ : getDispatcher
+d --> b
+b -> d -- : pushEvent
+d ->? -- : push
+
+
+|||
+|||
+== Push Event  ==
+|||
+?->> d ++: pushEvent
+d -> eq--++: push
+eq -> q ++
+q --> eq
+eq -> q -- : pushEndQueue
+
+|||
+|||
+== Dispatch ==
+|||
+?->> d ++: executeOnce
+d -> q : getFront
+q -> e ++
+e --> q
+q --> d : event
+d -> q : pop
+deactivate q
+d -> d --++ : dispatchEvent
+d -> b ++ : getBehavior
+b --> d
+d -> b -- : process
+b -> b--: processEvent
+
+destroy e
+
+
+
+
+@enduml