simon
/
SCCD


			
				
					
						
						
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							<?xml version="1.0" ?>
<diagram name="Traffic_Light" author="Raphael Mannadiar">
	<description>
		PIM Traffic lights.
	</description>
	<inport name="ui"/>
	<top>
		from libs.ui import ui;
		import Tkinter as tk;
	</top>
	<class name="TrafficLight">
		<method name="TrafficLight"/>
			<body>
			<![CDATA[
				var size = 100;
				var offset = size + 5;
				this.RED = 0;
				this.YELLOW = 1;
				this.GREEN = 2;
				this.colors = ['#f00', '#ff0', '#0f0'];
				this.lights = [canvas.add_rectangle(size / 2, size / 2, size, size, {'fill':'#000'}), canvas.add_rectangle(size / 2, size / 2 + offset, size, size, {'fill':'#000'}), canvas.add_rectangle(size / 2, size / 2 + 2 * offset, size, size, {'fill':'#000'})];
			]]
			</body>
		</method>
		<method name="setYellow"/>
			<body>
			<![CDATA[
				this.clear();
				this.lights[this.YELLOW].set_color(this.colors[this.YELLOW]);
			]]
			</body>
		</method>
		<method name="setGreen"/>
			<body>
			<![CDATA[
				this.clear();
				this.lights[this.GREEN].set_color(this.colors[this.GREEN]);
			]]
			</body>
		</method>
		<method name="setRed"/>
			<body>
			<![CDATA[
				this.clear();
				this.lights[this.RED].set_color(this.colors[this.RED]);
			]]
			</body>
		</method>
		<method name="clear"/>
			<body>
			<![CDATA[
				this.lights[this.RED].set_color('#000');
				this.lights[this.YELLOW].set_color('#000');
				this.lights[this.GREEN].set_color('#000');
			]]
			</body>
		</method>
		<scxml  initial="on">
			<state id="off">
				<onentry>
					<script>
					<![CDATA[
						this.clear();
					]]
					</script>
				</onentry>
			</state>
			<state id="on" initial="normal">
				<transition port="ui" target="../off" event="quit_clicked">
				</transition>
				<state id="normal" initial="red">
					<transition port="ui" target="../interrupted" event="police_interrupt_clicked">
					</transition>
					history="history"
					<state id="yellow">
						<onentry>
							<script>
							<![CDATA[
								this.setYellow();
							]]
							</script>
						</onentry>
						<transition after="1.0" target="../red">
						</transition>
					</state>
					<state id="green">
						<onentry>
							<script>
							<![CDATA[
								this.setGreen();
							]]
							</script>
						</onentry>
						<transition after="2.0" target="../yellow">
						</transition>
					</state>
					<state id="red">
						<onentry>
							<script>
							<![CDATA[
								this.setRed();
							]]
							</script>
						</onentry>
						<transition after="3.0" target="../green">
						</transition>
					</state>
				</state>
				<state id="interrupted" initial="yellow">
					<transition port="ui" target="../normal/history" event="police_interrupt_clicked">
					</transition>
					<state id="yellow">
						<onentry>
							<script>
							<![CDATA[
								this.setYellow();
							]]
							</script>
						</onentry>
						<transition after="0.5" target="../black">
						</transition>
					</state>
					<state id="black">
						<onentry>
							<script>
							<![CDATA[
								this.clear();
							]]
							</script>
						</onentry>
						<transition after="0.5" target="../yellow">
						</transition>
					</state>
				</state>
			</state>
		</scxml>
	</class>
	<class name="MainApp" default="True">
		<relationships>
			<association name="trafficlight" class="TrafficLight"/>
		</relationships>
		<method name="MainApp"/>
			<body>
			<![CDATA[
				this.canvas = ui.append_canvas(ui.window, 100, 310, {'background':'#eee'});
				var police_button = ui.append_button(ui.window, 'Police interrupt');
				var quit_button = ui.append_button(ui.window, 'Quit');
				ui.bind_event(police_button.element, ui.EVENTS.MOUSE_CLICK, this.controller, 'police_interrupt_clicked');
				ui.bind_event(quit_button.element, ui.EVENTS.MOUSE_CLICK, this.controller, 'quit_clicked');
			]]
			</body>
		</method>
		<scxml  initial="initializing">
			<state id="initializing">
				<transition target="../creating">
					<raise event="create_instance" scope="'cd'">
						<parameter expr="'trafficlight'"/>
						<parameter expr="'TrafficLight'"/>
						<parameter expr="this.canvas"/>
					</raise>
				</transition>
			</state>
			<state id="initialized">
			</state>
			<state id="creating">
				<transition target="../initialized" event="instance_created">
					<parameter name="association_name" type="string"/>
					<raise event="set_association_name" scope="'narrow'" target="association_name">
						<parameter expr="association_name"/>
					</raise>
					<raise event="start_instance" scope="'cd'">
						<parameter expr="association_name"/>
					</raise>
				</transition>
			</state>
		</scxml>
	</class>
</diagram>