yentl
/
modelverse_GUI


			
				
					
						
						
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							<class name="Browser">
    <relationships>
        <inheritance class="tk.Toplevel" priority="1"/>
        <inheritance class="SCCDWidget" priority="0"/>
        <association name="buttons" class="Button"/>
        <association name="labels" class="Label"/>
        <association name="parent" class="A"/>
        <association name="progressbar" class="ProgressBar"/>
    </relationships>

    <constructor>
        <parameter name="prompt"/>
        <parameter name="filter_metamodels" default="None"/>
        <super class="tk.TopLevel"/>
        <super class="SCCDWidget"/>
        <body>
            tk.Label(self, text=prompt).pack()

            self.button_frame = tk.Frame(self)
            self.button_frame.pack(fill=tk.X)

            self.progressbar_frame = tk.Frame(self)
            self.progressbar_frame.pack(fill=tk.X)

            self.browser_frame = tk.Frame(self)
            self.browser_frame.pack(fill=tk.BOTH)

            self.current_location = ""
            self.selected_label = None
            self.labels = {}
            self.filter_metamodels = filter_metamodels
        </body>
    </constructor>

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

    <scxml initial="init">
        <state id="init" initial="button_OK">
            <state id="button_OK">
                <onentry>
                    <raise event="create_instance" scope="cd">
                        <parameter expr="'buttons'"/>
                        <parameter expr="'Button'"/>
                        <parameter expr="{'parent': self.button_frame, 'visual': TextVisual('OK'), 'tooltip_text': 'Open model', 'event_parameters': 'OK'}"/>
                    </raise>
                </onentry>

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

                    <script>
                        self.button_ok = association_name
                    </script>
                </transition>
            </state>

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

            <state id="button_back">
                <onentry>
                    <raise event="create_instance" scope="cd">
                        <parameter expr="'buttons'"/>
                        <parameter expr="'Button'"/>
                        <parameter expr="{'parent': self.button_frame, 'visual': TextVisual('back'), 'tooltip_text': 'Up in hierarchy', 'event_parameters': 'UP'}"/>
                    </raise>
                </onentry>

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

                    <script>
                        self.button_back = association_name
                    </script>
                </transition>
            </state>

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

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

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

                    <script>
                        self.progressbar = association_name
                    </script>
                </transition>
            </state>

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

        <parallel id="root">
            <state id="label_clicked">
                <state id="selecting_label">
                    <transition event="label_pressed" cond="self.selected_label is None" target=".">
                        <parameter name="text"/>
                        <raise event="highlight" target="self.labels[text]" scope="narrow"/>
                        <script>
                            self.selected_label = text
                        </script>
                    </transition>

                    <transition event="label_pressed" cond="self.selected_label is not None and self.selected_label != text" target=".">
                        <parameter name="text"/>
                        <raise event="unhighlight" target="self.labels[self.selected_label]" scope="narrow"/>
                        <raise event="highlight" target="self.labels[text]" scope="narrow"/>
                        <script>
                            self.selected_label = text
                        </script>
                    </transition>

                    <transition event="label_pressed" cond="self.selected_label is not None and self.selected_label == text" target=".">
                        <parameter name="text"/>
                        <script>
                            self.current_location += self.selected_label
                            self.selected_label = None
                        </script>
                        <raise event="redraw_labels"/>
                    </transition>
                </state>
            </state>

            <state id="state" initial="root">
                <state id="root">
                    <transition event="button_pressed" cond="event_name == 'OK' and self.selected_label is not None" target=".">
                        <parameter name="event_name"/>
                        <script>
                            self.current_location += self.selected_label
                            self.selected_label = None
                        </script>

                        <raise event="redraw_labels"/>
                    </transition>

                    <transition event="button_pressed" cond="event_name == 'UP' and self.current_location != ''" target=".">
                        <parameter name="event_name"/>
                        <script>
                            split = self.current_location[:-1].rsplit("/", 1)
                            if len(split) == 1:
                                self.current_location = ""
                            else:
                                self.current_location = split[0] + "/"
                            self.selected_label = None
                        </script>

                        <raise event="redraw_labels"/>
                    </transition>
                </state>

                <state id="finished"/>
            </state>

            <state id="draw_labels" initial="create_labels">
                <state id="create_labels" initial="query">
                    <state id="query">
                        <onentry>
                            <raise event="mv_request" scope="broad">
                                <parameter expr="'model_list'"/>
                                <parameter expr="[self.current_location if self.current_location == '' else self.current_location[:-1]]"/>
                            </raise>
                            <raise event="update_status" scope="narrow" target="self.progressbar">
                                <parameter expr="0"/>
                                <parameter expr="'Querying list of models...'"/>
                            </raise>
                        </onentry>

                        <transition event="mv_response" target="../add_labels">
                            <parameter name="result"/>
                            <script>
                                self.labels_to_add = sorted(result)
                                self.all_results = sorted(result)
                            </script>
                        </transition>

                        <transition event="mv_exception" target=".">
                            <parameter name="ID"/>
                            <parameter name="exception_name"/>
                            <parameter name="description"/>
                            <raise event="errorlog_log" scope="broad">
                                <parameter expr="'Could not fetch model list: %s -- %s' % (exception_name, description)"/>
                            </raise>
                            <raise event="close_self"/>
                        </transition>
                    </state>

                    <state id="error"/>

                    <state id="add_labels" initial="check_type">
                        <state id="check_type">
                            <onentry>
                                <raise event="update_status" scope="narrow" target="self.progressbar">
                                    <parameter expr="100.0 * (len(self.all_results) - len(self.labels_to_add) + 1) / (len(self.all_results) + 1)"/>
                                    <parameter expr="('Checking model type of %s' % self.labels_to_add[0]) if len(self.labels_to_add) > 0 else 'Finished!'"/>
                                </raise>
                            </onentry>

                            <transition cond="len(self.labels_to_add) == 0" target="../../../waiting"/>
                            <transition cond="not self.filter_metamodels" target="../add_label"/>
                            <transition cond="self.filter_metamodels and len(self.labels_to_add) > 0 and self.labels_to_add[0][-1] == '/'" target="../add_label"/>
                            <transition cond="self.filter_metamodels and len(self.labels_to_add) > 0 and self.labels_to_add[0][-1] != '/'" target="../check_types"/>
                        </state>

                        <state id="check_types">
                            <onentry>
                                <raise event="mv_request" scope="broad">
                                    <parameter expr="'model_types'"/>
                                    <parameter expr="[self.current_location + self.labels_to_add[0]]"/>
                                </raise>
                            </onentry>

                            <transition event="mv_response" cond="len(set([i[0] for i in result]).intersection(set(self.filter_metamodels))) == 0" target="../check_type">
                                <parameter name="result"/>
                                <script>
                                    self.labels_to_add.pop(0)
                                </script>
                            </transition>

                            <transition event="mv_response" cond="len(set([i[0] for i in result]).intersection(set(self.filter_metamodels))) > 0" target="../add_label">
                                <parameter name="result"/>
                            </transition>

                            <transition event="mv_exception" target="../error">
                                <parameter name="ID"/>
                                <parameter name="exception_name"/>
                                <parameter name="description"/>
                                <raise event="errorlog_log" scope="broad">
                                    <parameter expr="'Could not query model types: %s -- %s' % (exception_name, description)"/>
                                </raise>
                                <raise event="close_self"/>
                            </transition>
                        </state>

                        <state id="error"/>
                        
                        <state id="add_label">
                            <onentry>
                                <raise event="create_instance" scope="cd">
                                    <parameter expr="'labels'"/>
                                    <parameter expr="'Label'"/>
                                    <parameter expr="{'parent': self.browser_frame, 'text': self.labels_to_add[0]}"/>
                                </raise>
                            </onentry>

                            <transition event="instance_created" target="../pack_label">
                                <parameter name="association_name"/>
                                <raise event="start_instance" scope="cd">
                                    <parameter expr="association_name"/>
                                </raise>
                                <script>
                                    self.labels[self.labels_to_add.pop(0)] = association_name
                                </script>
                            </transition>
                        </state>
                        <state id="pack_label">
                            <transition event="tk_widget" target="../check_type">
                                <parameter name="tk_elem"/>
                                <script>
                                    tk_elem.pack()
                                </script>
                            </transition>
                        </state>
                    </state>
                </state>

                <state id="waiting"/>

                <state id="delete_labels">
                    <transition cond="len(self.labels) > 0" target=".">
                        <raise event="delete_instance" scope="cd">
                            <parameter expr="self.labels.popitem()[1]"/>
                        </raise>
                    </transition>

                    <transition cond="len(self.labels) == 0" target="../create_labels"/>
                </state>

                <transition event="redraw_labels" target="delete_labels"/>
            </state>

            <transition cond="len(self.current_location) > 0 and self.current_location[-1] != '/'" target="../closing">
                <raise event="browse_result" target="'parent'" scope="narrow">
                    <parameter expr="self.current_location"/>
                </raise>

                <raise event="close_self"/>

                <script>
                    self.to_close = self.labels.values() + [self.button_ok, self.button_back, self.progressbar]
                </script>
            </transition>

            <transition event="window-close" cond="ID == id(self)" target="../closing">
                <parameter name="ID"/>
                <script>
                    self.to_close = self.labels.values() + [self.button_ok, self.button_back, self.progressbar]
                </script>
            </transition>

            <transition event="close_self" target="../closing">
                <script>
                    self.to_close = self.labels.values() + [self.button_ok, self.button_back, self.progressbar]
                </script>
            </transition>
        </parallel>

        <state id="closing">
            <onentry>
                <raise event="delete_instance" scope="cd">
                    <parameter expr="self.to_close.pop(0)"/>
                </raise>
            </onentry>

            <transition event="instance_deleted" cond="len(self.to_close) > 0" target="."/>
            <transition event="instance_deleted" cond="len(self.to_close) == 0" target="../close"/>
        </state>
            
        <state id="close">
            <onentry>
                <raise event="close_window" scope="narrow" target="'parent'"/>
            </onentry>
        </state>
    </scxml>
</class>