1 package net.mograsim.logic.core.components;
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3 import java.util.ArrayList;
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4 import java.util.Collection;
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5 import java.util.List;
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7 import net.mograsim.logic.core.LogicObservable;
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8 import net.mograsim.logic.core.LogicObserver;
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9 import net.mograsim.logic.core.timeline.Timeline;
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10 import net.mograsim.logic.core.types.Bit;
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11 import net.mograsim.logic.core.wires.Wire.ReadEnd;
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12 import net.mograsim.logic.core.wires.Wire.ReadWriteEnd;
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15 * This class models a simple on/off (ONE/ZERO) switch for user interaction.
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17 * @author Christian Femers
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20 public class ManualSwitch extends Component implements LogicObservable
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22 private Collection<LogicObserver> observers;
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23 private ReadWriteEnd output;
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25 public ManualSwitch(Timeline timeline, ReadWriteEnd output)
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28 observers = new ArrayList<>();
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29 if (output.length() != 1)
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30 throw new IllegalArgumentException("Switch output can be only a single wire");
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31 this.output = output;
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34 public void switchOn()
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39 public void switchOff()
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44 public void toggle()
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49 public void setState(boolean isOn)
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51 setToValueOf(isOn ? Bit.ONE : Bit.ZERO);
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54 public void setToValueOf(Bit bit)
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56 if (!bit.isBinary())
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57 throw new IllegalArgumentException("Cannot set ManualSwitch to the value of Bit " + bit);
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58 if (bit == output.getInputValue())
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60 output.feedSignals(bit);
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64 public boolean isOn()
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66 return output.getInputValue() == Bit.ONE;
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69 public Bit getValue()
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71 return output.getInputValue();
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75 public List<ReadEnd> getAllInputs()
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81 public List<ReadWriteEnd> getAllOutputs()
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83 return List.of(output);
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87 public void registerObserver(LogicObserver ob)
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93 public void deregisterObserver(LogicObserver ob)
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95 observers.remove(ob);
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99 public void notifyObservers()
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101 observers.forEach(ob -> ob.update(this));
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