first version of bouncing balls without ui code

examples/bouncingballs/python/sccd_no_ui.py

@@ -0,0 +1,655 @@
+"""
+Generated by Statechart compiler by Glenn De Jonghe, Joeri Exelmans, Simon Van Mierlo, and Yentl Van Tendeloo (for the inspiration)
+
+Model author: Simon Van Mierlo
+Model name:   Bouncing_Balls_Python_Version
+Model description:
+Bouncing Balls - no UI code.
+"""
+
+from sccd.runtime.statecharts_core import *
+
+# package "Bouncing_Balls_Python_Version"
+
+class MainApp(RuntimeClassBase):
+    def __init__(self, controller):
+        RuntimeClassBase.__init__(self, controller)
+        
+        self.semantics.big_step_maximality = StatechartSemantics.TakeMany
+        self.semantics.internal_event_lifeline = StatechartSemantics.Queue
+        self.semantics.input_event_lifeline = StatechartSemantics.FirstComboStep
+        self.semantics.priority = StatechartSemantics.SourceParent
+        self.semantics.concurrency = StatechartSemantics.Single
+        
+        # build Statechart structure
+        self.build_statechart_structure()
+        
+        # call user defined constructor
+        MainApp.user_defined_constructor(self)
+    
+    def user_defined_constructor(self):
+        self.nr_of_windows = 0
+        self.WINDOW_SIZE_W = 800
+        self.WINDOW_SIZE_H = 600
+    
+    def user_defined_destructor(self):
+        pass
+    
+    
+    # builds Statechart structure
+    def build_statechart_structure(self):
+        
+        # state <root>
+        self.states[""] = State(0, "", self)
+        
+        # state /main
+        self.states["/main"] = ParallelState(1, "/main", self)
+        
+        # state /main/main_behaviour
+        self.states["/main/main_behaviour"] = State(2, "/main/main_behaviour", self)
+        
+        # state /main/main_behaviour/initializing
+        self.states["/main/main_behaviour/initializing"] = State(3, "/main/main_behaviour/initializing", self)
+        self.states["/main/main_behaviour/initializing"].setEnter(self._main_main_behaviour_initializing_enter)
+        
+        # state /main/main_behaviour/running
+        self.states["/main/main_behaviour/running"] = State(4, "/main/main_behaviour/running", self)
+        
+        # state /main/creating_behaviour
+        self.states["/main/creating_behaviour"] = State(5, "/main/creating_behaviour", self)
+        
+        # state /main/creating_behaviour/waiting
+        self.states["/main/creating_behaviour/waiting"] = State(6, "/main/creating_behaviour/waiting", self)
+        
+        # state /main/creating_behaviour/creating
+        self.states["/main/creating_behaviour/creating"] = State(7, "/main/creating_behaviour/creating", self)
+        
+        # state /main/deleting_behaviour
+        self.states["/main/deleting_behaviour"] = State(8, "/main/deleting_behaviour", self)
+        
+        # state /main/deleting_behaviour/waiting
+        self.states["/main/deleting_behaviour/waiting"] = State(9, "/main/deleting_behaviour/waiting", self)
+        
+        # state /main/deleting_behaviour/deleting
+        self.states["/main/deleting_behaviour/deleting"] = State(10, "/main/deleting_behaviour/deleting", self)
+        
+        # state /stopped
+        self.states["/stopped"] = State(11, "/stopped", self)
+        self.states["/stopped"].setEnter(self._stopped_enter)
+        
+        # add children
+        self.states[""].addChild(self.states["/main"])
+        self.states[""].addChild(self.states["/stopped"])
+        self.states["/main"].addChild(self.states["/main/main_behaviour"])
+        self.states["/main"].addChild(self.states["/main/creating_behaviour"])
+        self.states["/main"].addChild(self.states["/main/deleting_behaviour"])
+        self.states["/main/main_behaviour"].addChild(self.states["/main/main_behaviour/initializing"])
+        self.states["/main/main_behaviour"].addChild(self.states["/main/main_behaviour/running"])
+        self.states["/main/creating_behaviour"].addChild(self.states["/main/creating_behaviour/waiting"])
+        self.states["/main/creating_behaviour"].addChild(self.states["/main/creating_behaviour/creating"])
+        self.states["/main/deleting_behaviour"].addChild(self.states["/main/deleting_behaviour/waiting"])
+        self.states["/main/deleting_behaviour"].addChild(self.states["/main/deleting_behaviour/deleting"])
+        self.states[""].fixTree()
+        self.states[""].default_state = self.states["/main"]
+        self.states["/main/main_behaviour"].default_state = self.states["/main/main_behaviour/initializing"]
+        self.states["/main/creating_behaviour"].default_state = self.states["/main/creating_behaviour/waiting"]
+        self.states["/main/deleting_behaviour"].default_state = self.states["/main/deleting_behaviour/waiting"]
+        
+        # transition /main/main_behaviour/initializing
+        _main_main_behaviour_initializing_0 = Transition(self, self.states["/main/main_behaviour/initializing"], [self.states["/main/main_behaviour/running"]])
+        _main_main_behaviour_initializing_0.setTrigger(None)
+        self.states["/main/main_behaviour/initializing"].addTransition(_main_main_behaviour_initializing_0)
+        
+        # transition /main/main_behaviour/running
+        _main_main_behaviour_running_0 = Transition(self, self.states["/main/main_behaviour/running"], [self.states["/main/main_behaviour/running"]])
+        _main_main_behaviour_running_0.setAction(self._main_main_behaviour_running_0_exec)
+        _main_main_behaviour_running_0.setTrigger(Event("window_created", None))
+        self.states["/main/main_behaviour/running"].addTransition(_main_main_behaviour_running_0)
+        _main_main_behaviour_running_1 = Transition(self, self.states["/main/main_behaviour/running"], [self.states["/main/main_behaviour/running"]])
+        _main_main_behaviour_running_1.setAction(self._main_main_behaviour_running_1_exec)
+        _main_main_behaviour_running_1.setTrigger(Event("window_deleted", None))
+        _main_main_behaviour_running_1.setGuard(self._main_main_behaviour_running_1_guard)
+        self.states["/main/main_behaviour/running"].addTransition(_main_main_behaviour_running_1)
+        _main_main_behaviour_running_2 = Transition(self, self.states["/main/main_behaviour/running"], [self.states["/main/main_behaviour/running"]])
+        _main_main_behaviour_running_2.setAction(self._main_main_behaviour_running_2_exec)
+        _main_main_behaviour_running_2.setTrigger(Event("window_deleted", None))
+        _main_main_behaviour_running_2.setGuard(self._main_main_behaviour_running_2_guard)
+        self.states["/main/main_behaviour/running"].addTransition(_main_main_behaviour_running_2)
+        
+        # transition /main/creating_behaviour/waiting
+        _main_creating_behaviour_waiting_0 = Transition(self, self.states["/main/creating_behaviour/waiting"], [self.states["/main/creating_behaviour/creating"]])
+        _main_creating_behaviour_waiting_0.setAction(self._main_creating_behaviour_waiting_0_exec)
+        _main_creating_behaviour_waiting_0.setTrigger(Event("create_window", None))
+        self.states["/main/creating_behaviour/waiting"].addTransition(_main_creating_behaviour_waiting_0)
+        
+        # transition /main/creating_behaviour/creating
+        _main_creating_behaviour_creating_0 = Transition(self, self.states["/main/creating_behaviour/creating"], [self.states["/main/creating_behaviour/waiting"]])
+        _main_creating_behaviour_creating_0.setAction(self._main_creating_behaviour_creating_0_exec)
+        _main_creating_behaviour_creating_0.setTrigger(Event("instance_created", None))
+        self.states["/main/creating_behaviour/creating"].addTransition(_main_creating_behaviour_creating_0)
+        
+        # transition /main/deleting_behaviour/waiting
+        _main_deleting_behaviour_waiting_0 = Transition(self, self.states["/main/deleting_behaviour/waiting"], [self.states["/main/deleting_behaviour/deleting"]])
+        _main_deleting_behaviour_waiting_0.setAction(self._main_deleting_behaviour_waiting_0_exec)
+        _main_deleting_behaviour_waiting_0.setTrigger(Event("delete_window", None))
+        self.states["/main/deleting_behaviour/waiting"].addTransition(_main_deleting_behaviour_waiting_0)
+        
+        # transition /main/deleting_behaviour/deleting
+        _main_deleting_behaviour_deleting_0 = Transition(self, self.states["/main/deleting_behaviour/deleting"], [self.states["/main/deleting_behaviour/waiting"]])
+        _main_deleting_behaviour_deleting_0.setAction(self._main_deleting_behaviour_deleting_0_exec)
+        _main_deleting_behaviour_deleting_0.setTrigger(Event("instance_deleted", None))
+        self.states["/main/deleting_behaviour/deleting"].addTransition(_main_deleting_behaviour_deleting_0)
+        
+        # transition /main
+        _main_0 = Transition(self, self.states["/main"], [self.states["/stopped"]])
+        _main_0.setTrigger(Event("stop", None))
+        self.states["/main"].addTransition(_main_0)
+    
+    def _main_main_behaviour_initializing_enter(self):
+        self.raiseInternalEvent(Event("create_window", None, []))
+    
+    def _stopped_enter(self):
+        self.big_step.outputEvent(Event("stop_ui", "ui_out", []))
+    
+    def _main_main_behaviour_running_0_exec(self, parameters):
+        self.nr_of_windows += 1
+    
+    def _main_main_behaviour_running_1_exec(self, parameters):
+        self.nr_of_windows -= 1
+    
+    def _main_main_behaviour_running_1_guard(self, parameters):
+        return self.nr_of_windows > 1
+    
+    def _main_main_behaviour_running_2_exec(self, parameters):
+        self.raiseInternalEvent(Event("stop", None, []))
+    
+    def _main_main_behaviour_running_2_guard(self, parameters):
+        return self.nr_of_windows == 1
+    
+    def _main_creating_behaviour_waiting_0_exec(self, parameters):
+        self.big_step.outputEventOM(Event("create_instance", None, [self, 'windows', 'Window', self.WINDOW_SIZE_H, self.WINDOW_SIZE_W]))
+    
+    def _main_creating_behaviour_creating_0_exec(self, parameters):
+        association_name = parameters[0]
+        self.big_step.outputEventOM(Event("start_instance", None, [self, association_name]))
+        self.big_step.outputEventOM(Event("narrow_cast", None, [self, association_name, Event("set_association_name", None, [association_name])]))
+        self.raiseInternalEvent(Event("window_created", None, []))
+    
+    def _main_deleting_behaviour_waiting_0_exec(self, parameters):
+        association_name = parameters[0]
+        self.big_step.outputEventOM(Event("delete_instance", None, [self, association_name]))
+    
+    def _main_deleting_behaviour_deleting_0_exec(self, parameters):
+        self.raiseInternalEvent(Event("window_deleted", None, []))
+    
+    def initializeStatechart(self):
+        # enter default state
+        self.default_targets = self.states["/main"].getEffectiveTargetStates()
+        RuntimeClassBase.initializeStatechart(self)
+
+class Window(RuntimeClassBase):
+    def __init__(self, controller, height, width):
+        RuntimeClassBase.__init__(self, controller)
+        
+        self.semantics.big_step_maximality = StatechartSemantics.TakeMany
+        self.semantics.internal_event_lifeline = StatechartSemantics.Queue
+        self.semantics.input_event_lifeline = StatechartSemantics.FirstComboStep
+        self.semantics.priority = StatechartSemantics.SourceParent
+        self.semantics.concurrency = StatechartSemantics.Single
+        
+        # build Statechart structure
+        self.build_statechart_structure()
+        self.inports["window_ui_in"] = controller.addInputPort("window_ui_in", self)
+        
+        # call user defined constructor
+        Window.user_defined_constructor(self, height, width)
+    
+    def user_defined_constructor(self, height, width):
+        self.height = height
+        self.width = width
+    
+    def user_defined_destructor(self):
+        pass
+    
+    
+    # builds Statechart structure
+    def build_statechart_structure(self):
+        
+        # state <root>
+        self.states[""] = State(0, "", self)
+        
+        # state /main
+        self.states["/main"] = ParallelState(1, "/main", self)
+        
+        # state /main/main_behaviour
+        self.states["/main/main_behaviour"] = State(2, "/main/main_behaviour", self)
+        
+        # state /main/main_behaviour/initializing
+        self.states["/main/main_behaviour/initializing"] = State(3, "/main/main_behaviour/initializing", self)
+        
+        # state /main/main_behaviour/creating_button
+        self.states["/main/main_behaviour/creating_button"] = State(4, "/main/main_behaviour/creating_button", self)
+        
+        # state /main/main_behaviour/running
+        self.states["/main/main_behaviour/running"] = State(5, "/main/main_behaviour/running", self)
+        
+        # state /main/main_behaviour/creating_ball
+        self.states["/main/main_behaviour/creating_ball"] = State(6, "/main/main_behaviour/creating_ball", self)
+        
+        # state /main/size_change_listener
+        self.states["/main/size_change_listener"] = State(7, "/main/size_change_listener", self)
+        
+        # state /main/size_change_listener/listening
+        self.states["/main/size_change_listener/listening"] = State(8, "/main/size_change_listener/listening", self)
+        
+        # state /stopped
+        self.states["/stopped"] = State(9, "/stopped", self)
+        self.states["/stopped"].setEnter(self._stopped_enter)
+        
+        # add children
+        self.states[""].addChild(self.states["/main"])
+        self.states[""].addChild(self.states["/stopped"])
+        self.states["/main"].addChild(self.states["/main/main_behaviour"])
+        self.states["/main"].addChild(self.states["/main/size_change_listener"])
+        self.states["/main/main_behaviour"].addChild(self.states["/main/main_behaviour/initializing"])
+        self.states["/main/main_behaviour"].addChild(self.states["/main/main_behaviour/creating_button"])
+        self.states["/main/main_behaviour"].addChild(self.states["/main/main_behaviour/running"])
+        self.states["/main/main_behaviour"].addChild(self.states["/main/main_behaviour/creating_ball"])
+        self.states["/main/size_change_listener"].addChild(self.states["/main/size_change_listener/listening"])
+        self.states[""].fixTree()
+        self.states[""].default_state = self.states["/main"]
+        self.states["/main/main_behaviour"].default_state = self.states["/main/main_behaviour/initializing"]
+        self.states["/main/size_change_listener"].default_state = self.states["/main/size_change_listener/listening"]
+        
+        # transition /main/main_behaviour/initializing
+        _main_main_behaviour_initializing_0 = Transition(self, self.states["/main/main_behaviour/initializing"], [self.states["/main/main_behaviour/creating_button"]])
+        _main_main_behaviour_initializing_0.setAction(self._main_main_behaviour_initializing_0_exec)
+        _main_main_behaviour_initializing_0.setTrigger(Event("set_association_name", None))
+        self.states["/main/main_behaviour/initializing"].addTransition(_main_main_behaviour_initializing_0)
+        
+        # transition /main/main_behaviour/creating_button
+        _main_main_behaviour_creating_button_0 = Transition(self, self.states["/main/main_behaviour/creating_button"], [self.states["/main/main_behaviour/running"]])
+        _main_main_behaviour_creating_button_0.setAction(self._main_main_behaviour_creating_button_0_exec)
+        _main_main_behaviour_creating_button_0.setTrigger(Event("instance_created", None))
+        self.states["/main/main_behaviour/creating_button"].addTransition(_main_main_behaviour_creating_button_0)
+        
+        # transition /main/main_behaviour/running
+        _main_main_behaviour_running_0 = Transition(self, self.states["/main/main_behaviour/running"], [self.states["/main/main_behaviour/running"]])
+        _main_main_behaviour_running_0.setAction(self._main_main_behaviour_running_0_exec)
+        _main_main_behaviour_running_0.setTrigger(Event("button_pressed", None))
+        _main_main_behaviour_running_0.setGuard(self._main_main_behaviour_running_0_guard)
+        self.states["/main/main_behaviour/running"].addTransition(_main_main_behaviour_running_0)
+        _main_main_behaviour_running_1 = Transition(self, self.states["/main/main_behaviour/running"], [self.states["/main/main_behaviour/running"]])
+        _main_main_behaviour_running_1.setAction(self._main_main_behaviour_running_1_exec)
+        _main_main_behaviour_running_1.setTrigger(Event("close_window", "window_ui_in"))
+        self.states["/main/main_behaviour/running"].addTransition(_main_main_behaviour_running_1)
+        _main_main_behaviour_running_2 = Transition(self, self.states["/main/main_behaviour/running"], [self.states["/main/main_behaviour/creating_ball"]])
+        _main_main_behaviour_running_2.setAction(self._main_main_behaviour_running_2_exec)
+        _main_main_behaviour_running_2.setTrigger(Event("create_ball", "window_ui_in"))
+        self.states["/main/main_behaviour/running"].addTransition(_main_main_behaviour_running_2)
+        _main_main_behaviour_running_3 = Transition(self, self.states["/main/main_behaviour/running"], [self.states["/main/main_behaviour/running"]])
+        _main_main_behaviour_running_3.setAction(self._main_main_behaviour_running_3_exec)
+        _main_main_behaviour_running_3.setTrigger(Event("delete_ball", None))
+        self.states["/main/main_behaviour/running"].addTransition(_main_main_behaviour_running_3)
+        
+        # transition /main/main_behaviour/creating_ball
+        _main_main_behaviour_creating_ball_0 = Transition(self, self.states["/main/main_behaviour/creating_ball"], [self.states["/main/main_behaviour/running"]])
+        _main_main_behaviour_creating_ball_0.setAction(self._main_main_behaviour_creating_ball_0_exec)
+        _main_main_behaviour_creating_ball_0.setTrigger(Event("instance_created", None))
+        self.states["/main/main_behaviour/creating_ball"].addTransition(_main_main_behaviour_creating_ball_0)
+        
+        # transition /main/size_change_listener/listening
+        _main_size_change_listener_listening_0 = Transition(self, self.states["/main/size_change_listener/listening"], [self.states["/main/size_change_listener/listening"]])
+        _main_size_change_listener_listening_0.setAction(self._main_size_change_listener_listening_0_exec)
+        _main_size_change_listener_listening_0.setTrigger(Event("size_changed", "window_ui_in"))
+        self.states["/main/size_change_listener/listening"].addTransition(_main_size_change_listener_listening_0)
+        
+        # transition /main
+        _main_0 = Transition(self, self.states["/main"], [self.states["/stopped"]])
+        _main_0.setAction(self._main_0_exec)
+        _main_0.setTrigger(Event("stop", None))
+        self.states["/main"].addTransition(_main_0)
+    
+    def _stopped_enter(self):
+        self.big_step.outputEventOM(Event("narrow_cast", None, [self, 'parent', Event("delete_window", None, [self.association_name])]))
+    
+    def _main_0_exec(self, parameters):
+        self.big_step.outputEventOM(Event("delete_instance", None, [self, 'buttons']))
+        self.big_step.outputEventOM(Event("delete_instance", None, [self, 'balls']))
+    
+    def _main_main_behaviour_initializing_0_exec(self, parameters):
+        association_name = parameters[0]
+        self.association_name = association_name
+        self.big_step.outputEventOM(Event("create_instance", None, [self, "buttons", "Button", 'create_window']))
+    
+    def _main_main_behaviour_creating_button_0_exec(self, parameters):
+        association_name = parameters[0]
+        self.big_step.outputEvent(Event("create_new_button", "window_ui_out", [self.association_name, association_name]))
+        self.big_step.outputEventOM(Event("start_instance", None, [self, association_name]))
+    
+    def _main_main_behaviour_running_0_exec(self, parameters):
+        event_name = parameters[0]
+        self.big_step.outputEventOM(Event("narrow_cast", None, [self, 'parent', Event("create_window", None, [])]))
+    
+    def _main_main_behaviour_running_0_guard(self, parameters):
+        event_name = parameters[0]
+        return event_name == 'create_window'
+    
+    def _main_main_behaviour_running_1_exec(self, parameters):
+        self.raiseInternalEvent(Event("stop", None, []))
+    
+    def _main_main_behaviour_running_2_exec(self, parameters):
+        x = parameters[0]
+        y = parameters[1]
+        self.big_step.outputEventOM(Event("create_instance", None, [self, "balls", "Ball"]))
+    
+    def _main_main_behaviour_running_3_exec(self, parameters):
+        association_name = parameters[0]
+        self.big_step.outputEventOM(Event("delete_instance", None, [self, association_name]))
+        self.big_step.outputEvent(Event("delete_ball", "window_ui_out", [self.association_name, association_name]))
+    
+    def _main_main_behaviour_creating_ball_0_exec(self, parameters):
+        association_name = parameters[0]
+        self.big_step.outputEvent(Event("create_new_ball", "window_ui_out", [self.association_name, association_name]))
+        self.big_step.outputEventOM(Event("start_instance", None, [self, association_name]))
+        self.big_step.outputEventOM(Event("narrow_cast", None, [self, association_name, Event("set_association_name", None, [association_name])]))
+    
+    def _main_size_change_listener_listening_0_exec(self, parameters):
+        new_height = parameters[0]
+        new_width = parameters[1]
+        self.height = height
+        self.width = width
+        self.big_step.outputEventOM(Event("narrow_cast", None, [self, balls, Event("window_size_changed", None, [new_height, new_width])]))
+    
+    def initializeStatechart(self):
+        # enter default state
+        self.default_targets = self.states["/main"].getEffectiveTargetStates()
+        RuntimeClassBase.initializeStatechart(self)
+
+class Button(RuntimeClassBase):
+    def __init__(self, controller, event_name):
+        RuntimeClassBase.__init__(self, controller)
+        
+        self.semantics.big_step_maximality = StatechartSemantics.TakeMany
+        self.semantics.internal_event_lifeline = StatechartSemantics.Queue
+        self.semantics.input_event_lifeline = StatechartSemantics.FirstComboStep
+        self.semantics.priority = StatechartSemantics.SourceParent
+        self.semantics.concurrency = StatechartSemantics.Single
+        
+        # build Statechart structure
+        self.build_statechart_structure()
+        self.inports["button_ui_in"] = controller.addInputPort("button_ui_in", self)
+        
+        # call user defined constructor
+        Button.user_defined_constructor(self, event_name)
+    
+    def user_defined_constructor(self, event_name):
+        self.event_name = event_name
+    
+    def user_defined_destructor(self):
+        pass
+    
+    
+    # builds Statechart structure
+    def build_statechart_structure(self):
+        
+        # state <root>
+        self.states[""] = State(0, "", self)
+        
+        # state /initializing
+        self.states["/initializing"] = State(1, "/initializing", self)
+        self.states["/initializing"].setEnter(self._initializing_enter)
+        
+        # state /running
+        self.states["/running"] = State(2, "/running", self)
+        
+        # add children
+        self.states[""].addChild(self.states["/initializing"])
+        self.states[""].addChild(self.states["/running"])
+        self.states[""].fixTree()
+        self.states[""].default_state = self.states["/initializing"]
+        
+        # transition /initializing
+        _initializing_0 = Transition(self, self.states["/initializing"], [self.states["/running"]])
+        _initializing_0.setTrigger(None)
+        self.states["/initializing"].addTransition(_initializing_0)
+        
+        # transition /running
+        _running_0 = Transition(self, self.states["/running"], [self.states["/running"]])
+        _running_0.setAction(self._running_0_exec)
+        _running_0.setTrigger(Event("clicked", "button_ui_in"))
+        self.states["/running"].addTransition(_running_0)
+    
+    def _initializing_enter(self):
+        self.big_step.outputEventOM(Event("narrow_cast", None, [self, 'parent', Event("button_created", None, [self])]))
+    
+    def _running_0_exec(self, parameters):
+        self.big_step.outputEventOM(Event("narrow_cast", None, [self, 'parent', Event("button_pressed", None, [self.event_name])]))
+    
+    def initializeStatechart(self):
+        # enter default state
+        self.default_targets = self.states["/initializing"].getEffectiveTargetStates()
+        RuntimeClassBase.initializeStatechart(self)
+
+class Ball(RuntimeClassBase):
+    def __init__(self, controller, x, y, window_height, window_width):
+        RuntimeClassBase.__init__(self, controller)
+        
+        self.semantics.big_step_maximality = StatechartSemantics.TakeMany
+        self.semantics.internal_event_lifeline = StatechartSemantics.Queue
+        self.semantics.input_event_lifeline = StatechartSemantics.FirstComboStep
+        self.semantics.priority = StatechartSemantics.SourceParent
+        self.semantics.concurrency = StatechartSemantics.Single
+        
+        # build Statechart structure
+        self.build_statechart_structure()
+        self.inports["ball_ui_in"] = controller.addInputPort("ball_ui_in", self)
+        self.inports["ball_ui_out"] = controller.addInputPort("ball_ui_out", self)
+        
+        # call user defined constructor
+        Ball.user_defined_constructor(self, x, y, window_height, window_width)
+    
+    def user_defined_constructor(self, x, y, window_height, window_width):
+        self.x = x
+        self.y = y
+        self.window_height = window_height
+        self.window_width = window_width
+        self.r = 20.0;
+        self.vel = {'x': random.uniform(-5.0, 5.0), 'y': random.uniform(-5.0, 5.0)};
+        self.smooth = 0.4 # value between 0 and 1
+    
+    def user_defined_destructor(self):
+        pass
+    
+    
+    # builds Statechart structure
+    def build_statechart_structure(self):
+        
+        # state <root>
+        self.states[""] = State(0, "", self)
+        
+        # state /main
+        self.states["/main"] = ParallelState(1, "/main", self)
+        
+        # state /main/main_behaviour
+        self.states["/main/main_behaviour"] = State(2, "/main/main_behaviour", self)
+        
+        # state /main/main_behaviour/initializing
+        self.states["/main/main_behaviour/initializing"] = State(3, "/main/main_behaviour/initializing", self)
+        
+        # state /main/main_behaviour/bouncing
+        self.states["/main/main_behaviour/bouncing"] = State(4, "/main/main_behaviour/bouncing", self)
+        self.states["/main/main_behaviour/bouncing"].setEnter(self._main_main_behaviour_bouncing_enter)
+        self.states["/main/main_behaviour/bouncing"].setExit(self._main_main_behaviour_bouncing_exit)
+        
+        # state /main/main_behaviour/dragging
+        self.states["/main/main_behaviour/dragging"] = State(5, "/main/main_behaviour/dragging", self)
+        
+        # state /main/main_behaviour/selected
+        self.states["/main/main_behaviour/selected"] = State(6, "/main/main_behaviour/selected", self)
+        
+        # state /main/size_change_listener
+        self.states["/main/size_change_listener"] = State(7, "/main/size_change_listener", self)
+        
+        # state /main/size_change_listener/listening
+        self.states["/main/size_change_listener/listening"] = State(8, "/main/size_change_listener/listening", self)
+        
+        # state /deleted
+        self.states["/deleted"] = State(9, "/deleted", self)
+        
+        # add children
+        self.states[""].addChild(self.states["/main"])
+        self.states[""].addChild(self.states["/deleted"])
+        self.states["/main"].addChild(self.states["/main/main_behaviour"])
+        self.states["/main"].addChild(self.states["/main/size_change_listener"])
+        self.states["/main/main_behaviour"].addChild(self.states["/main/main_behaviour/initializing"])
+        self.states["/main/main_behaviour"].addChild(self.states["/main/main_behaviour/bouncing"])
+        self.states["/main/main_behaviour"].addChild(self.states["/main/main_behaviour/dragging"])
+        self.states["/main/main_behaviour"].addChild(self.states["/main/main_behaviour/selected"])
+        self.states["/main/size_change_listener"].addChild(self.states["/main/size_change_listener/listening"])
+        self.states[""].fixTree()
+        self.states[""].default_state = self.states["/main"]
+        self.states["/main/main_behaviour"].default_state = self.states["/main/main_behaviour/initializing"]
+        self.states["/main/size_change_listener"].default_state = self.states["/main/size_change_listener/listening"]
+        
+        # transition /main/main_behaviour/initializing
+        _main_main_behaviour_initializing_0 = Transition(self, self.states["/main/main_behaviour/initializing"], [self.states["/main/main_behaviour/bouncing"]])
+        _main_main_behaviour_initializing_0.setAction(self._main_main_behaviour_initializing_0_exec)
+        _main_main_behaviour_initializing_0.setTrigger(Event("set_association_name", None))
+        self.states["/main/main_behaviour/initializing"].addTransition(_main_main_behaviour_initializing_0)
+        
+        # transition /main/main_behaviour/bouncing
+        _main_main_behaviour_bouncing_0 = Transition(self, self.states["/main/main_behaviour/bouncing"], [self.states["/main/main_behaviour/bouncing"]])
+        _main_main_behaviour_bouncing_0.setAction(self._main_main_behaviour_bouncing_0_exec)
+        _main_main_behaviour_bouncing_0.setTrigger(Event("_0after"))
+        self.states["/main/main_behaviour/bouncing"].addTransition(_main_main_behaviour_bouncing_0)
+        _main_main_behaviour_bouncing_1 = Transition(self, self.states["/main/main_behaviour/bouncing"], [self.states["/main/main_behaviour/selected"]])
+        _main_main_behaviour_bouncing_1.setAction(self._main_main_behaviour_bouncing_1_exec)
+        _main_main_behaviour_bouncing_1.setTrigger(Event("select_ball", "ball_ui_in"))
+        self.states["/main/main_behaviour/bouncing"].addTransition(_main_main_behaviour_bouncing_1)
+        
+        # transition /main/main_behaviour/dragging
+        _main_main_behaviour_dragging_0 = Transition(self, self.states["/main/main_behaviour/dragging"], [self.states["/main/main_behaviour/dragging"]])
+        _main_main_behaviour_dragging_0.setAction(self._main_main_behaviour_dragging_0_exec)
+        _main_main_behaviour_dragging_0.setTrigger(Event("motion", "ball_ui_in"))
+        self.states["/main/main_behaviour/dragging"].addTransition(_main_main_behaviour_dragging_0)
+        _main_main_behaviour_dragging_1 = Transition(self, self.states["/main/main_behaviour/dragging"], [self.states["/main/main_behaviour/bouncing"]])
+        _main_main_behaviour_dragging_1.setAction(self._main_main_behaviour_dragging_1_exec)
+        _main_main_behaviour_dragging_1.setTrigger(Event("left-release", "input"))
+        self.states["/main/main_behaviour/dragging"].addTransition(_main_main_behaviour_dragging_1)
+        
+        # transition /main/main_behaviour/selected
+        _main_main_behaviour_selected_0 = Transition(self, self.states["/main/main_behaviour/selected"], [self.states["/main/main_behaviour/dragging"]])
+        _main_main_behaviour_selected_0.setTrigger(Event("clicked", "ball_ui_in"))
+        self.states["/main/main_behaviour/selected"].addTransition(_main_main_behaviour_selected_0)
+        _main_main_behaviour_selected_1 = Transition(self, self.states["/main/main_behaviour/selected"], [self.states["/main/main_behaviour/selected"]])
+        _main_main_behaviour_selected_1.setAction(self._main_main_behaviour_selected_1_exec)
+        _main_main_behaviour_selected_1.setTrigger(Event("delete", "ball_ui_in"))
+        self.states["/main/main_behaviour/selected"].addTransition(_main_main_behaviour_selected_1)
+        
+        # transition /main/size_change_listener/listening
+        _main_size_change_listener_listening_0 = Transition(self, self.states["/main/size_change_listener/listening"], [self.states["/main/size_change_listener/listening"]])
+        _main_size_change_listener_listening_0.setAction(self._main_size_change_listener_listening_0_exec)
+        _main_size_change_listener_listening_0.setTrigger(Event("window_size_changed", None))
+        self.states["/main/size_change_listener/listening"].addTransition(_main_size_change_listener_listening_0)
+        
+        # transition /main
+        _main_0 = Transition(self, self.states["/main"], [self.states["/deleted"]])
+        _main_0.setTrigger(Event("delete_local", None))
+        self.states["/main"].addTransition(_main_0)
+    
+    def _main_main_behaviour_bouncing_enter(self):
+        self.addTimer(0, (20 - self.getSimulatedTime() % 20) / 1000.0)
+    
+    def _main_main_behaviour_bouncing_exit(self):
+        self.removeTimer(0)
+    
+    def _main_main_behaviour_initializing_0_exec(self, parameters):
+        association_name = parameters[0]
+        self.association_name = association_name
+    
+    def _main_main_behaviour_bouncing_0_exec(self, parameters):
+        if x <= 0 or x + (self.r * 2) >= self.window_width:
+            self.vel['x'] = -self.vel['x']
+        if y <= 0 or y + (self.r * 2) >= self.window_height:
+            self.vel['y'] = -self.vel['y']
+        self.x += self.vel['x']
+        self.y += self.vel['y']
+        self.big_step.outputEvent(Event("change_position", "ball_ui_out", [self.x, self.y]))
+    
+    def _main_main_behaviour_bouncing_1_exec(self, parameters):
+        self.big_step.outputEvent(Event("change_color", "ball_ui_out", [yellow]))
+    
+    def _main_main_behaviour_dragging_0_exec(self, parameters):
+        dx = parameters[0]
+        dy = parameters[1]
+        self.x += dx
+        self.y += dy
+        if self.x - self.r <= 0:
+            self.x = 1;
+        elif self.x + self.r >= self.window_width:
+            self.x = self.window_width - (2 * self.r) - 1
+        if self.y - self.r <= 0:
+            self.y = 1
+        elif self.y + self.r >= self.window_height:
+            self.y = self.window_height - (2 * self.r) - 1;
+        self.vel = {
+            'x': (1 - self.smooth) * dx + self.smooth * self.vel['x'],
+            'y': (1 - self.smooth) * dy + self.smooth * self.vel['y']
+        }
+        self.big_step.outputEvent(Event("change_position", "ball_ui_out", [self.x, self.y]))
+    
+    def _main_main_behaviour_dragging_1_exec(self, parameters):
+        tagorid = parameters[0]
+        self.canvas.itemconfig(self.id, fill="red")
+    
+    def _main_main_behaviour_selected_1_exec(self, parameters):
+        self.big_step.outputEventOM(Event("narrow_cast", None, [self, 'parent', Event("delete_ball", None, [self.association_name])]))
+        self.raiseInternalEvent(Event("delete_local", None, []))
+    
+    def _main_size_change_listener_listening_0_exec(self, parameters):
+        new_height = parameters[0]
+        new_width = parameters[1]
+        self.window_height = new_height
+        self.window_width = new_width
+    
+    def initializeStatechart(self):
+        # enter default state
+        self.default_targets = self.states["/main"].getEffectiveTargetStates()
+        RuntimeClassBase.initializeStatechart(self)
+
+class ObjectManager(ObjectManagerBase):
+    def __init__(self, controller):
+        ObjectManagerBase.__init__(self, controller)
+    
+    def instantiate(self, class_name, construct_params):
+        if class_name == "MainApp":
+            instance = MainApp(self.controller)
+            instance.associations = {}
+            instance.associations["windows"] = Association("Window", 0, -1)
+        elif class_name == "Window":
+            instance = Window(self.controller, construct_params[0], construct_params[1])
+            instance.associations = {}
+            instance.associations["balls"] = Association("Ball", 0, -1)
+            instance.associations["buttons"] = Association("Button", 0, -1)
+            instance.associations["parent"] = Association("MainApp", 1, 1)
+        elif class_name == "Button":
+            instance = Button(self.controller, construct_params[0])
+            instance.associations = {}
+            instance.associations["parent"] = Association("Field", 1, 1)
+        elif class_name == "Ball":
+            instance = Ball(self.controller, construct_params[0], construct_params[1], construct_params[2], construct_params[3])
+            instance.associations = {}
+            instance.associations["parent"] = Association("Window", 1, 1)
+        else:
+            raise Exception("Cannot instantiate class " + class_name)
+        return instance
+
+class Controller(EventLoopControllerBase):
+    def __init__(self, event_loop_callbacks, finished_callback = None, behind_schedule_callback = None):
+        if finished_callback == None: finished_callback = None
+        if behind_schedule_callback == None: behind_schedule_callback = None
+        EventLoopControllerBase.__init__(self, ObjectManager(self), event_loop_callbacks, finished_callback, behind_schedule_callback)
+        self.addInputPort("ui_in")
+        self.addOutputPort("ui_out")
+        self.object_manager.createInstance("MainApp", [])

examples/bouncingballs/python/sccd_no_ui.xml

@@ -0,0 +1,361 @@
+<?xml version="1.1" ?>
+<diagram author="Simon Van Mierlo" name="Bouncing_Balls_Python_Version">
+    <description>
+        Bouncing Balls - no UI code.
+    </description>
+    <inport name="ui_in"/>
+    <outport name="ui_out"/>
+    <class name="MainApp" default="true">
+        <relationships>
+            <association name="windows" class="Window" />
+        </relationships>
+        <constructor>
+            <body>
+                <![CDATA[
+                self.nr_of_windows = 0
+                self.WINDOW_SIZE_W = 800
+                self.WINDOW_SIZE_H = 600
+                ]]>
+            </body>
+        </constructor>
+        <scxml initial="main">
+            <parallel id="main">
+                <state id="main_behaviour" initial="initializing">
+                    <state id="initializing">
+                        <onentry>
+                            <raise event="create_window" scope="local" />
+                        </onentry>
+                        <transition target="../running" />
+                    </state>
+                    <state id="running">
+                        <transition event="window_created" target=".">
+                            <script>
+                                self.nr_of_windows += 1
+                            </script>
+                        </transition>
+                        <transition event="window_deleted" target="." cond="self.nr_of_windows > 1">
+                            <script>
+                                self.nr_of_windows -= 1
+                            </script>
+                        </transition>
+                        <transition event="window_deleted" target="." cond="self.nr_of_windows == 1">
+                            <raise event="stop" scope="local" />
+                        </transition>
+                    </state>
+                </state>
+                <state id="creating_behaviour" initial="waiting">
+                    <state id="waiting">
+                        <transition event="create_window" target="../creating">
+                            <raise event="create_instance" scope="cd">
+                                <parameter expr="'windows'" />
+                                <parameter expr="'Window'" />
+                                <parameter expr="self.WINDOW_SIZE_H" />
+                                <parameter expr="self.WINDOW_SIZE_W" />
+                            </raise>
+                        </transition>
+                    </state>
+                    <state id="creating">
+                        <transition event="instance_created" target="../waiting">
+                            <parameter name="association_name" />
+                            <raise event="start_instance" scope="cd">
+                                <parameter expr="association_name" />
+                            </raise>
+                            <raise event="set_association_name" scope="narrow" target="association_name">
+                                <parameter expr="association_name" />
+                            </raise>
+                            <raise event="window_created" scope="local" />
+                        </transition>
+                    </state>
+                </state>
+                <state id="deleting_behaviour" initial="waiting">
+                    <state id="waiting">
+                        <transition event="delete_window" target="../deleting">
+                            <parameter name="association_name" />
+                            <raise event="delete_instance" scope="cd">
+                                <parameter expr="association_name" />
+                            </raise>
+                        </transition>
+                    </state>
+                    <state id="deleting">
+                        <transition event="instance_deleted" target="../waiting">
+                            <raise event="window_deleted" scope="local" />
+                        </transition>
+                    </state>
+                </state>
+                <transition event="stop" target="../stopped" />
+            </parallel>
+            <state id="stopped">
+                <onentry>
+                    <raise event="stop_ui" port="ui_out" />
+                </onentry>
+            </state>
+        </scxml>
+    </class>
+
+    <class name="Window">
+        <inport name="window_ui_in" />
+        <outport name="window_ui_out" />
+        <relationships>
+            <association name="balls" class="Ball" />
+            <association name="buttons" class="Button" />
+            <association name="parent" class="MainApp" min="1" max="1" />
+        </relationships>
+        <constructor>
+            <parameter name="height" />
+            <parameter name="width" />
+            <body>
+                self.height = height
+                self.width = width
+            </body>
+        </constructor>
+        <scxml initial="main">
+            <parallel id="main">
+                <state id="main_behaviour" initial="initializing">
+                    <state id="initializing">
+                        <transition event="set_association_name" target="../creating_button">
+                            <parameter name="association_name" />
+                            <script>
+                                self.association_name = association_name
+                            </script>
+                            <raise scope="cd" event="create_instance">
+                                <parameter expr='"buttons"' />
+                                <parameter expr='"Button"' />
+                                <parameter expr="'create_window'" />
+                            </raise>
+                        </transition>
+                    </state>
+                    <state id="creating_button">
+                        <transition event="instance_created" target="../running">
+                            <parameter name="association_name" type="string"/>
+                            <raise event="create_new_button" port="window_ui_out">
+                                <parameter expr="self.association_name" />
+                                <parameter expr="association_name" />
+                            </raise>
+                            <raise scope="cd" event="start_instance">
+                                <parameter expr="association_name" />
+                            </raise>
+                        </transition>
+                    </state>
+                    <state id="running">
+                        <transition event="button_pressed" target="." cond="event_name == 'create_window'">
+                            <parameter name="event_name" type="string" />
+                            <raise event="create_window" scope="narrow" target="'parent'" />
+                        </transition>
+                        <transition event="close_window" port="window_ui_in" target=".">
+                            <raise event="stop" scope="local" />
+                        </transition>
+                        <transition event="create_ball" port="window_ui_in" target="../creating_ball">
+                            <parameter name="x" />
+                            <parameter name="y" />
+                            <raise scope="cd" event="create_instance">
+                                <parameter expr='"balls"' />
+                                <parameter expr='"Ball"' />
+                            </raise>
+                        </transition>
+                        <transition event="delete_ball" target=".">
+                            <parameter name="association_name" type="string" />
+                            <raise event="delete_instance" scope="cd">
+                                <parameter expr="association_name" />
+                            </raise>
+                            <raise event="delete_ball" port="window_ui_out">
+                                <parameter expr="self.association_name" />
+                                <parameter expr="association_name" />
+                            </raise>
+                        </transition>
+                    </state>
+                    <state id="creating_ball">
+                        <transition event="instance_created" target="../running">
+                            <parameter name="association_name" type="string"/>
+                            <raise event="create_new_ball" port="window_ui_out">
+                                <parameter expr="self.association_name" />
+                                <parameter expr="association_name" />
+                            </raise>
+                            <raise event="start_instance" scope="cd">
+                                <parameter expr="association_name" />
+                            </raise>
+                            <raise event="set_association_name" scope="narrow" target="association_name">
+                                <parameter expr="association_name" />
+                            </raise>
+                        </transition>
+                    </state>
+                </state>
+                <state id="size_change_listener" initial="listening">
+                    <state id="listening">
+                        <transition target="." event="size_changed" port="window_ui_in">
+                            <parameter name="new_height" />
+                            <parameter name="new_width" />
+                            <script>
+                                self.height = height
+                                self.width = width
+                            </script>
+                            <raise event="window_size_changed" scope="narrow" target="balls">
+                                <parameter expr="new_height" />
+                                <parameter expr="new_width" />
+                            </raise>
+                        </transition>
+                    </state>
+                </state>
+                <transition event="stop" target="../stopped">
+                    <raise event="delete_instance" scope="cd">
+                        <parameter expr="'buttons'" />
+                    </raise>
+                    <raise event="delete_instance" scope="cd">
+                        <parameter expr="'balls'" />
+                    </raise>
+                </transition>
+            </parallel>
+            <state id="stopped">
+                <onentry>
+                    <raise event="delete_window" scope="narrow" target="'parent'">
+                        <parameter expr="self.association_name" />
+                    </raise>
+                </onentry>
+            </state>
+        </scxml>
+    </class>
+    <class name="Button">
+        <inport name="button_ui_in" />
+        <relationships>
+            <association name="parent" class="Field" min="1" max="1" />
+        </relationships>
+        <constructor>
+            <parameter name="event_name" type="str" />
+            <body>
+                self.event_name = event_name
+            </body>
+        </constructor>
+        <scxml initial="initializing">
+            <state id="initializing">
+                <onentry>                
+                    <raise event="button_created" scope="narrow" target="'parent'">
+                        <parameter expr="self" />
+                    </raise>
+                </onentry>
+                <transition target="../running" />
+            </state>
+            <state id="running">
+                <transition event="clicked" port="button_ui_in" target=".">
+                    <raise event="button_pressed" scope="narrow" target="'parent'">
+                        <parameter expr="self.event_name" />
+                    </raise>
+                </transition>
+            </state>
+        </scxml>
+    </class>
+    <class name="Ball">
+        <inport name="ball_ui_in" />
+        <inport name="ball_ui_out" />
+        <relationships>
+            <association name="parent" class="Window" min="1" max="1" />
+        </relationships>
+        <constructor>
+            <parameter name="x" />
+            <parameter name="y" />
+            <parameter name="window_height" />
+            <parameter name="window_width" />
+            <body>
+                self.x = x
+                self.y = y
+                self.window_height = window_height
+                self.window_width = window_width
+                self.r = 20.0;
+                self.vel = {'x': random.uniform(-5.0, 5.0), 'y': random.uniform(-5.0, 5.0)};
+                self.smooth = 0.4 # value between 0 and 1
+            </body>
+        </constructor>
+        <scxml initial="main">
+            <parallel id="main">
+                <state id="main_behaviour" initial="initializing">
+                    <state id="initializing">
+                        <transition event="set_association_name" target="../bouncing">
+                            <parameter name="association_name" type="str" />
+                            <script>
+                                self.association_name = association_name
+                            </script>
+                        </transition>
+                    </state>
+                    <state id="bouncing">
+                        <transition after="(20 - self.getSimulatedTime() % 20) / 1000.0" target=".">
+                            <script>
+                            <![CDATA[
+                                if x <= 0 or x + (self.r * 2) >= self.window_width:
+                                    self.vel['x'] = -self.vel['x']
+                                if y <= 0 or y + (self.r * 2) >= self.window_height:
+                                    self.vel['y'] = -self.vel['y']
+                                self.x += self.vel['x']
+                                self.y += self.vel['y']
+                            ]]>
+                            </script>
+                            <raise event="change_position" port="ball_ui_out">
+                                <parameter expr="self.x" />
+                                <parameter expr="self.y" />
+                            </raise>
+                        </transition>
+                        <transition port="ball_ui_in" event="select_ball" target="../selected">
+                            <raise event="change_color" port="ball_ui_out">
+                                <parameter expr="yellow" />
+                            </raise>
+                        </transition>
+                    </state>
+                    <state id="dragging">
+                        <transition port="ball_ui_in" event="motion" target=".">
+                            <parameter name="dx" />
+                            <parameter name="dy" />
+                            <script>
+                            <![CDATA[
+                                self.x += dx
+                                self.y += dy
+                                if self.x - self.r <= 0:
+                                    self.x = 1;
+                                elif self.x + self.r >= self.window_width:
+                                    self.x = self.window_width - (2 * self.r) - 1
+                                if self.y - self.r <= 0:
+                                    self.y = 1
+                                elif self.y + self.r >= self.window_height:
+                                    self.y = self.window_height - (2 * self.r) - 1;
+                                self.vel = {
+                                    'x': (1 - self.smooth) * dx + self.smooth * self.vel['x'],
+                                    'y': (1 - self.smooth) * dy + self.smooth * self.vel['y']
+                                }
+                            ]]>
+                            </script>
+                            <raise event="change_position" port="ball_ui_out">
+                                <parameter expr="self.x" />
+                                <parameter expr="self.y" />
+                            </raise>
+                        </transition>
+                        <transition port="input" event="left-release" target="../bouncing">
+                            <parameter name="tagorid" type="int" default="None" />
+                            <script>
+                                self.canvas.itemconfig(self.id, fill="red")
+                            </script>
+                        </transition>
+                    </state>
+                    <state id="selected">
+                        <transition port="ball_ui_in" event="clicked" target="../dragging" />
+                        <transition port="ball_ui_in" event="delete" target=".">
+                            <raise event="delete_ball" scope="narrow" target="'parent'">
+                                <parameter expr="self.association_name" />
+                            </raise>
+                            <raise event="delete_local" />
+                        </transition>
+                    </state>
+                </state>
+                <state id="size_change_listener" initial="listening">
+                    <state id="listening">
+                        <transition target="." event="window_size_changed">
+                            <parameter name="new_height" />
+                            <parameter name="new_width" />
+                            <script>
+                                self.window_height = new_height
+                                self.window_width = new_width
+                            </script>
+                        </transition>
+                    </state>
+                </state>
+                <transition target="../deleted" event="delete_local" />
+            </parallel>
+            <state id="deleted" />
+        </scxml>
+    </class>
+</diagram>