yentl
/
modelverse_GUI


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824
							<class name="MainWindow">
    <relationships>
        <inheritance class="tk.Toplevel" priority="1"/>
        <inheritance class="SCCDWidget" priority="0"/>
        <association name="parent" class="A"/>
        <association name="generic_toolbars" class="Toolbar"/>
        <association name="model_toolbars" class="Toolbar"/>
        <association name="subwindow" class="Window"/>
        <association name="canvas" class="Canvas"/>
        <association name="progress_bar" class="ProgressBar"/>
    </relationships>

    <constructor>
        <super class="tk.TopLevel"/>
        <super class="SCCDWidget"/>
        <body>
            self.toolbar_frame = tk.Frame(self)
            self.canvas_frame = tk.Frame(self)
            self.progressbar_frame = tk.Frame(self)
            self.toolbar_frame.pack(fill=tk.X)
            self.canvas_frame.pack(fill=tk.BOTH, expand=tk.TRUE)
            self.progressbar_frame.pack(fill=tk.X)
            self.model_loaded = False

            global current_mapper
            current_mapper = None
            global current_rendered_model
            current_rendered_model = None
            global current_metamodel
            current_metamodel = None
            global current_model
            current_model = None
        </body>
    </constructor>

    <destructor>
        <body>
            self.destroy()
        </body>
    </destructor>

    <scxml initial="init">
        <state id="init" initial="generic_toolbar">
            <state id="generic_toolbar">
                <onentry>
                    <raise event="create_instance" scope="cd">
                        <parameter expr="'generic_toolbars'"/>
                        <parameter expr="'GenericToolbar'"/>
                        <parameter expr="self.toolbar_frame"/>
                    </raise>
                </onentry>

                <transition event="instance_created" target="../pack_generic">
                    <parameter name="association_name"/>
                    <raise event="start_instance" scope="cd">
                        <parameter expr="association_name"/>
                    </raise>
                </transition>
            </state>
            
            <state id="pack_generic">
                <transition event="tk_widget" target="../progressbar">
                    <parameter name="tk_elem"/>
                    <script>
                        tk_elem.pack(anchor=tk.NW)
                    </script>
                </transition>
            </state>

            <state id="progressbar">
                <onentry>
                    <raise event="create_instance" scope="cd">
                        <parameter expr="'progress_bar'"/>
                        <parameter expr="'ProgressBar'"/>
                        <parameter expr="{'parent': self.progressbar_frame}"/>
                    </raise>
                </onentry>

                <transition event="instance_created" target="../pack_progressbar">
                    <parameter name="association_name"/>
                    <raise event="start_instance" scope="cd">
                        <parameter expr="association_name"/>
                    </raise>
                </transition>
            </state>

            <state id="pack_progressbar">
                <transition event="tk_widget" target="../../running">
                    <parameter name="tk_elem"/>
                    <script>
                        tk_elem.pack(side=tk.BOTTOM, fill=tk.X, expand=tk.TRUE)
                    </script>
                </transition>
            </state>
        </state>

        <state id="running" initial="idle">
            <state id="idle">
                <onentry>
                    <raise event="update_status" scope="narrow" target="'progress_bar'">
                        <parameter expr="0"/>
                        <parameter expr="'Ready for action!'"/>
                    </raise>
                </onentry>
                <transition event="create_new_model" target="../create_new_model"/>
                <transition event="open_model" target="../open_model">
                    <script>
                        print("OPEN MODEL")
                    </script>
                </transition>
                <transition event="rerender_model" target="../rerender_model"/>
                <transition event="new_rendered" cond="current_mapper is not None" target="../new_rendered"/>
                <transition event="verify" target="../verify_model"/>
                <transition event="conf_bottom" target="../conf_bottom"/>

                <transition event="change_metamodel" target="../change_metamodel">
                    <parameter name="new_metamodel"/>
                    <script>
                        global current_metamodel
                        current_metamodel = new_metamodel
                    </script>
                </transition>
                <transition event="change_mapper" target="../change_mapper">
                    <parameter name="new_mapper"/>
                    <script>
                        global current_mapper
                        current_mapper = new_mapper
                    </script>
                </transition>
                <transition event="change_rendered" target="../change_rendered">
                    <parameter name="new_rendered"/>
                    <script>
                        global current_rendered_model
                        current_rendered_model = new_rendered
                    </script>
                </transition>
            </state>

            <state id="change_metamodel">
                <onentry>
                    <script>
                        print("MM -> " + current_metamodel)
                    </script>
                    <raise event="mv_request" scope="broad">
                        <parameter expr="'alter_context'"/>
                        <parameter expr="[current_model, current_metamodel]"/>
                    </raise>

                    <raise event="update_status" scope="narrow" target="'progress_bar'">
                        <parameter expr="20"/>
                        <parameter expr="'Storing model context...'"/>
                    </raise>
                </onentry>

                <transition event="mv_response" target="../open_model/search_CS_mappers"/>
            </state>

            <state id="conf_bottom">
                <onentry>
                    <raise event="mv_request" scope="broad">
                        <parameter expr="'conformance_add'"/>
                        <parameter expr="[current_model, 'formalisms/Bottom']"/>
                    </raise>

                    <raise event="update_status" scope="narrow" target="'progress_bar'">
                        <parameter expr="10"/>
                        <parameter expr="'Storing model context...'"/>
                    </raise>

                    <script>
                        global current_metamodel
                        current_metamodel = 'formalisms/Bottom'
                    </script>
                </onentry>

                <transition event="mv_response" target="../change_metamodel"/>
            </state>

            <state id="custom_MM" initial="query">
                <state id="query">
                    <onentry>
                        <raise event="create_instance" scope="cd">
                            <parameter expr="'subwindow'"/>
                            <parameter expr="'Browser'"/>
                            <parameter expr="'Select metamodel to use.'"/>
                            <parameter expr="[]"/>
                        </raise>
                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="0"/>
                            <parameter expr="'Browsing for metamodel...'"/>
                        </raise>
                    </onentry>

                    <transition event="instance_created" target="../wait_for_metamodel">
                        <parameter name="association_name"/>
                        <raise event="start_instance" scope="cd">
                            <parameter expr="association_name"/>
                        </raise>
                        <script>
                            self.subwindow = association_name
                        </script>
                    </transition>
                </state>

                <state id="wait_for_metamodel">
                    <transition event="close_window" target="../../idle">
                        <raise event="delete_instance" scope="cd">
                            <parameter expr="self.subwindow"/>
                        </raise>

                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="10"/>
                            <parameter expr="'Browsing for model... OK'"/>
                        </raise>
                    </transition>

                    <transition event="browse_result" target="../../change_metamodel">
                        <parameter name="result"/>
                        <script>
                            global current_metamodel
                            current_metamodel = result
                        </script>
                    </transition>
                </state>
            </state>

            <state id="change_mapper">
                <transition target="../rerender_model"/>
            </state>

            <state id="change_rendered">
                <transition target="../rerender_model"/>
            </state>

            <state id="verify_model" initial="request">
                <state id="request">
                    <onentry>
                        <raise event="mv_request" scope="broad">
                            <parameter expr="'verify'"/>
                            <parameter expr="[current_model, current_metamodel]"/>
                        </raise>
                    </onentry>

                    <transition event="mv_progress" target=".">
                        <parameter name="result"/>

                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="result * 100"/>
                            <parameter expr="'Verifying...'"/>
                        </raise>
                    </transition>

                    <transition event="mv_response" target="../show_result">
                        <parameter name="result"/>
                        <raise event="create_instance" scope="cd">
                            <parameter expr="'subwindow'"/>
                            <parameter expr="'Popup'"/>
                            <parameter expr="result"/>
                        </raise>

                    </transition>
                </state>

                <state id="show_result">
                    <transition event="instance_created" target="../wait_for_close">
                        <parameter name="assoc_name"/>
                        <raise event="start_instance" scope="cd">
                            <parameter expr="assoc_name"/>
                        </raise>
                    </transition>
                </state>

                <state id="wait_for_close">
                    <transition event="close_window" target="../../idle">
                        <raise event="delete_instance" scope="cd">
                            <parameter expr="'subwindow'"/>
                        </raise>
                    </transition>
                </state>
            </state>

            <state id="open_model" initial="query_model">
                <state id="query_model">
                    <onentry>
                        <raise event="create_instance" scope="cd">
                            <parameter expr="'subwindow'"/>
                            <parameter expr="'Browser'"/>
                            <parameter expr="'Select model to open'"/>
                            <parameter expr="['formalisms/SimpleClassDiagrams']"/>
                        </raise>
                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="0"/>
                            <parameter expr="'Browsing for model...'"/>
                        </raise>
                    </onentry>

                    <transition event="instance_created" target="../wait_for_model">
                        <parameter name="association_name"/>
                        <raise event="start_instance" scope="cd">
                            <parameter expr="association_name"/>
                        </raise>
                        <script>
                            self.subwindow = association_name
                        </script>
                    </transition>
                </state>

                <state id="wait_for_model">
                    <transition event="close_window" target="../../idle">
                        <raise event="delete_instance" scope="cd">
                            <parameter expr="self.subwindow"/>
                        </raise>

                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="10"/>
                            <parameter expr="'Browsing for model... OK'"/>
                        </raise>
                    </transition>

                    <transition event="browse_result" target="../got_model">
                        <parameter name="result"/>
                        <script>
                            global current_model
                            current_model = result
                        </script>
                    </transition>
                </state>

                <state id="got_model">
                    <transition event="close_window" target="../search_metamodels">
                        <raise event="delete_instance" scope="cd">
                            <parameter expr="self.subwindow"/>
                        </raise>
                    </transition>
                </state>

                <state id="search_metamodels">
                    <onentry>
                        <raise event="mv_request" scope="broad">
                            <parameter expr="'model_types'"/>
                            <parameter expr="[current_model]"/>
                        </raise>
                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="10"/>
                            <parameter expr="'Querying existing metamodels...'"/>
                        </raise>
                    </onentry>

                    <transition event="mv_response" target="../search_CS_mappers">
                        <parameter name="result"/>
                        <script>
                            global current_metamodel
                            print("Allowed metamodels: " + str(result))
                            if len(result) > 0:
                                current_metamodel = next(iter(result))
                            else:
                                current_metamodel = 'formalisms/Bottom'
                            self.allowed_metamodels = result
                        </script>
                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="20"/>
                            <parameter expr="'Querying existing metamodels... OK'"/>
                        </raise>
                    </transition>
                </state>

                <state id="search_CS_mappers">
                    <onentry>
                        <raise event="mv_request" scope="broad">
                            <parameter expr="'transformation_between'"/>
                            <parameter expr="[current_metamodel, 'formalisms/MM_render']"/>
                        </raise>
                    </onentry>

                    <transition event="mv_response" target="../check_CS_mapper">
                        <parameter name="result"/>
                        <script>
                            print("MM: " + str(current_metamodel))
                            print("Allowed mappers: " + str(result))
                            self.allowed_mappers = list(result)
                            global current_mapper
                            if len(result) > 0:
                                if current_mapper not in result:
                                    current_mapper = next(iter(result))
                            else:
                                current_mapper = None
                        </script>
                    </transition>
                </state>

                <state id="check_CS_mapper">
                    <transition cond="current_mapper is None" target="../../rerender_model">
                        <script>
                            global current_rendered_model
                            current_rendered_model = None
                            self.allowed_rendered = []
                        </script>
                        <raise event="clear_canvas" scope="narrow" target="'canvas'"/>
                    </transition>
                    <transition cond="current_mapper is not None" target="../search_CS_rendered"/>
                </state>

                <state id="search_CS_rendered">
                    <onentry>
                        <raise event="mv_request" scope="broad">
                            <parameter expr="'model_rendered'"/>
                            <parameter expr="[current_model, current_mapper]"/>
                        </raise>
                    </onentry>

                    <transition event="mv_response" target="../store_metamodel">
                        <parameter name="result"/>
                        <script>
                            print("Allowed rendered: " + str(result))
                            self.allowed_rendered = list(result)
                            global current_rendered_model

                            if (len(result) > 0):
                                if current_rendered_model not in result:
                                    print("Reusing an existing rendered model")
                                    current_rendered_model = next(iter(result))
                            else:
                                print("Creating new rendered model!")
                                current_rendered_model = "rendered/%s" % str(uuid.uuid4())
                                self.allowed_rendered.append(current_rendered_model)
                        </script>
                    </transition>
                </state>

                <state id="store_metamodel">
                    <onentry>
                        <raise event="mv_request" scope="broad">
                            <parameter expr="'alter_context'"/>
                            <parameter expr="[current_model, current_metamodel]"/>
                        </raise>
                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="45"/>
                            <parameter expr="'Storing model context...'"/>
                        </raise>
                    </onentry>

                    <transition event="mv_response" target="../../rerender_model"/>
                </state>
            </state>

            <state id="new_rendered">
                <onentry>
                    <script>
                        global current_rendered_model
                        current_rendered_model = "rendered/%s" % str(uuid.uuid4())
                        self.allowed_rendered.append(current_rendered_model)
                    </script>
                </onentry>

                <transition target="../rerender_model"/>
            </state>

            <state id="create_new_model" initial="query_metamodel">
                <state id="query_metamodel">
                    <onentry>
                        <raise event="create_instance" scope="cd">
                            <parameter expr="'subwindow'"/>
                            <parameter expr="'Browser'"/>
                            <parameter expr="'Select metamodel to instantiate'"/>
                            <parameter expr="['formalisms/SimpleClassDiagrams']"/>
                        </raise>
                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="0"/>
                            <parameter expr="'Browsing for metamodel...'"/>
                        </raise>
                    </onentry>

                    <transition event="instance_created" target="../wait_for_metamodel">
                        <parameter name="association_name"/>
                        <raise event="start_instance" scope="cd">
                            <parameter expr="association_name"/>
                        </raise>
                        <script>
                            self.subwindow = association_name
                        </script>
                    </transition>
                </state>

                <state id="wait_for_metamodel">
                    <transition event="close_window" target="../../idle">
                        <raise event="delete_instance" scope="cd">
                            <parameter expr="self.subwindow"/>
                        </raise>
                    </transition>

                    <transition event="browse_result" target="../got_mm">
                        <parameter name="result"/>
                        <script>
                            global current_metamodel
                            current_metamodel = result
                        </script>
                    </transition>
                </state>

                <state id="got_mm">
                    <transition event="close_window" target="../prompt_model_name">
                        <raise event="delete_instance" scope="cd">
                            <parameter expr="self.subwindow"/>
                        </raise>
                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="10"/>
                            <parameter expr="'Browsing for metamodel... OK'"/>
                        </raise>
                    </transition>
                </state>

                <state id="prompt_model_name">
                    <onentry>
                        <raise event="create_instance" scope="cd">
                            <parameter expr="'subwindow'"/>
                            <parameter expr="'PromptWindow'"/>
                            <parameter expr="{'Model name': ''}"/>
                            <parameter expr="{}"/>
                        </raise>
                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="10"/>
                            <parameter expr="'Prompt model name...'"/>
                        </raise>
                    </onentry>

                    <transition event="instance_created" target="../waiting_for_model_name">
                        <parameter name="association_name"/>
                        <raise event="start_instance" scope="cd">
                            <parameter expr="association_name"/>
                        </raise>
                        <script>
                            self.subwindow = association_name
                            current_model = ""
                        </script>
                    </transition>
                </state>

                <state id="waiting_for_model_name">
                    <transition event="prompt_results" target=".">
                        <parameter name="results"/>
                        <script>
                            current_model = results["Model name"]
                        </script>
                    </transition>

                    <transition event="close_window" cond="current_model != ''" target="../creating_model">
                        <raise event="delete_instance" scope="cd">
                            <parameter expr="self.subwindow"/>
                        </raise>
                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="20"/>
                            <parameter expr="'Prompt model name... OK'"/>
                        </raise>
                    </transition>

                    <transition event="close_window" cond="current_model == ''" target="../../idle">
                        <raise event="delete_instance" scope="cd">
                            <parameter expr="self.subwindow"/>
                        </raise>
                    </transition>
                </state>

                <state id="creating_model">
                    <onentry>
                        <raise event="mv_request" scope="broad">
                            <parameter expr="'model_add'"/>
                            <parameter expr="[current_model, current_metamodel, '']"/>
                        </raise>
                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="25"/>
                            <parameter expr="'Creating empty model...'"/>
                        </raise>
                    </onentry>

                    <transition event="mv_response" target="../../rerender_model">
                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="40"/>
                            <parameter expr="'Creating empty model... OK'"/>
                        </raise>
                    </transition>
                </state>
            </state>

            <state id="rerender_model" initial="initial_render">
                <state id="initial_render">
                    <transition cond="self.model_loaded" target="../recreate_toolbars"/>
                    <transition cond="not self.model_loaded" target="../canvas">
                        <script>
                            self.model_loaded = True
                        </script>
                    </transition>
                </state>

                <state id="recreate_toolbars" initial="waiting">
                    <onentry>
                        <raise event="close" scope="narrow" target="'model_toolbars'"/>
                        <script>
                            self.nr_toolbars = 3
                        </script>
                    </onentry>

                    <state id="waiting">
                        <transition event="close_window" target=".">
                            <script>
                                self.nr_toolbars -= 1
                            </script>
                        </transition>
                        <transition cond="self.nr_toolbars == 0" target="../close_all"/>
                    </state>

                    <state id="close_all">
                        <transition target="../../model_toolbars">
                            <raise event="delete_instance" scope="cd">
                                <parameter expr="'model_toolbars'"/>
                            </raise>
                        </transition>
                    </state>
                </state>

                <state id="canvas">
                    <onentry>
                        <raise event="create_instance" scope="cd">
                            <parameter expr="'canvas'"/>
                            <parameter expr="'Canvas'"/>
                            <parameter expr="self.canvas_frame"/>
                        </raise>
                    </onentry>
                    
                    <transition event="instance_created" target="../pack_canvas">
                        <parameter name="association_name"/>
                        <raise event="start_instance" scope="cd">
                            <parameter expr="association_name"/>
                        </raise>
                    </transition>
                </state>

                <state id="pack_canvas">
                    <transition event="tk_widget" target="../model_toolbars">
                        <parameter name="tk_elem"/>
                        <script>
                            tk_elem.pack(fill=tk.BOTH, expand=tk.TRUE)
                        </script>
                    </transition>
                </state>

                <state id="model_toolbars" initial="mm_toolbar">
                    <state id="mm_toolbar">
                        <onentry>
                            <raise event="create_instance" scope="cd">
                                <parameter expr="'model_toolbars'"/>
                                <parameter expr="'MetamodellingToolbar'"/>
                                <parameter expr="self.toolbar_frame"/>
                                <parameter expr="current_metamodel"/>
                                <parameter expr="self.allowed_metamodels"/>
                            </raise>
                        </onentry>

                        <transition event="instance_created" target="../pack_mm_toolbar">
                            <parameter name="association_name"/>
                            <raise event="start_instance" scope="cd">
                                <parameter expr="association_name"/>
                            </raise>
                        </transition>
                    </state>

                    <state id="pack_mm_toolbar">
                        <transition event="tk_widget" target="../cs_toolbar">
                            <parameter name="tk_elem"/>
                            <script>
                                tk_elem.pack(anchor=tk.W)
                            </script>
                        </transition>
                    </state>

                    <state id="cs_toolbar">
                        <onentry>
                            <raise event="create_instance" scope="cd">
                                <parameter expr="'model_toolbars'"/>
                                <parameter expr="'ConcreteSyntaxToolbar'"/>
                                <parameter expr="self.toolbar_frame"/>
                                <parameter expr="self.allowed_mappers"/>
                                <parameter expr="self.allowed_rendered"/>
                            </raise>
                        </onentry>

                        <transition event="instance_created" target="../pack_cs_toolbar">
                            <parameter name="association_name"/>
                            <raise event="start_instance" scope="cd">
                                <parameter expr="association_name"/>
                            </raise>
                        </transition>
                    </state>

                    <state id="pack_cs_toolbar">
                        <transition event="tk_widget" target="../dsl_toolbar">
                            <parameter name="tk_elem"/>
                            <script>
                                tk_elem.pack(anchor=tk.W)
                            </script>
                        </transition>
                    </state>

                    <state id="dsl_toolbar">
                        <onentry>
                            <raise event="create_instance" scope="cd">
                                <parameter expr="'model_toolbars'"/>
                                <parameter expr="'DSLToolbar'"/>
                                <parameter expr="self.toolbar_frame"/>
                            </raise>
                        </onentry>

                        <transition event="instance_created" target="../pack_dsl_toolbar">
                            <parameter name="association_name"/>
                            <raise event="start_instance" scope="cd">
                                <parameter expr="association_name"/>
                            </raise>
                        </transition>
                    </state>

                    <state id="pack_dsl_toolbar">
                        <transition event="tk_widget" cond="current_mapper is None" target="../../../idle">
                            <parameter name="tk_elem"/>
                            <script>
                                tk_elem.pack(anchor=tk.W)
                            </script>
                        </transition>

                        <transition event="tk_widget" cond="current_mapper is not None" target="../../request_render">
                            <parameter name="tk_elem"/>
                            <script>
                                tk_elem.pack(anchor=tk.W)
                            </script>
                        </transition>
                    </state>
                </state>

                <state id="request_render">
                    <onentry>
                        <raise event="mv_request" scope="broad">
                            <parameter expr="'model_render'"/>
                            <parameter expr="[current_model, current_mapper, current_rendered_model]"/>
                        </raise>
                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="50"/>
                            <parameter expr="'Perceptualizing model...'"/>
                        </raise>
                    </onentry>

                    <transition event="mv_response" target="../render_model">
                        <parameter name="result"/>
                        <script>
                            self.rendered = result
                        </script>
                    </transition>
                    <transition event="mv_exception" target="../../../close"/>
                </state>

                <state id="render_model" initial="allocate_groups">
                    <onentry>
                        <raise event="update_status" scope="narrow" target="'progress_bar'">
                            <parameter expr="80"/>
                            <parameter expr="'Perceptualizing model... OK'"/>
                        </raise>
                        <raise event="clear_canvas" scope="narrow" target="'canvas'"/>
                        <script>
                            self.groups = [i for i in self.rendered if i["type"] == "Group"]
                            self.contains = [i for i in self.rendered if i["type"] == "contains"]
                            self.rendered = [i for i in self.rendered if i["type"] not in ["Group", "contains"]]
                            self.rendered.reverse()
                        </script>
                        <raise event="mv_request" scope="broad">
                            <parameter expr="'alter_context'"/>
                            <parameter expr="[current_rendered_model, 'formalisms/MM_render']"/>
                        </raise>
                    </onentry>

                    <state id="allocate_groups">
                        <transition cond="len(self.groups) > 0" target="../allocating_group">
                            <raise event="define_group" scope="narrow" target="'canvas'">
                                <parameter expr="self.groups.pop()"/>
                            </raise>
                        </transition>
                        <transition cond="len(self.groups) == 0" target="../allocate_contains"/>
                    </state>

                    <state id="allocating_group">
                        <transition event="group_ready" target="../allocate_groups"/>
                    </state>

                    <state id="allocate_contains">
                        <transition cond="len(self.contains) > 0" target=".">
                            <raise event="define_contains" scope="narrow" target="'canvas'">
                                <parameter expr="self.contains.pop()"/>
                            </raise>
                        </transition>
                        <transition cond="len(self.contains) == 0" target="../render_elements"/>
                    </state>

                    <state id="render_elements">
                        <transition cond="len(self.rendered) > 0" target=".">
                            <raise event="draw_canvas" scope="narrow" target="'canvas'">
                                <parameter expr="self.rendered.pop()"/>
                            </raise>
                        </transition>

                        <transition cond="len(self.rendered) == 0" target="../../../idle"/>
                    </state>
                </state>
            </state>

            <transition event="window-close" cond="ID == id(self)" target="../close">
                <parameter name="ID"/>
            </transition>
        </state>

        <state id="close">
            <onentry>
                <raise event="close_window" scope="narrow" target="'parent'"/>
            </onentry>
        </state>

    </scxml>
</class>