package net.mograsim.logic.core.components;
+import java.util.ArrayList;
+import java.util.Collection;
import java.util.List;
+import net.mograsim.logic.core.LogicObservable;
+import net.mograsim.logic.core.LogicObserver;
import net.mograsim.logic.core.timeline.Timeline;
import net.mograsim.logic.core.types.Bit;
import net.mograsim.logic.core.wires.Wire.ReadEnd;
* @author Christian Femers
*
*/
-public class ManualSwitch extends Component
+public class ManualSwitch extends Component implements LogicObservable
{
+ private Collection<LogicObserver> observers;
private ReadWriteEnd output;
- private boolean isOn;
public ManualSwitch(Timeline timeline, ReadWriteEnd output)
{
super(timeline);
+ observers = new ArrayList<>();
if (output.length() != 1)
throw new IllegalArgumentException("Switch output can be only a single wire");
this.output = output;
public void toggle()
{
- setState(!isOn);
+ setState(!isOn());
}
public void setState(boolean isOn)
{
- if (this.isOn == isOn)
+ setToValueOf(isOn ? Bit.ONE : Bit.ZERO);
+ }
+
+ public void setToValueOf(Bit bit)
+ {
+ if (!bit.isBinary())
+ throw new IllegalArgumentException("Cannot set ManualSwitch to the value of Bit " + bit);
+ if (bit == output.getInputValue())
return;
- this.isOn = isOn;
- output.feedSignals(getValue());
+ output.feedSignals(bit);
+ notifyObservers();
}
public boolean isOn()
{
- return isOn;
+ return output.getInputValue() == Bit.ONE;
}
public Bit getValue()
{
- return isOn ? Bit.ONE : Bit.ZERO;
+ return output.getInputValue();
}
@Override
return List.of(output);
}
+ @Override
+ public void registerObserver(LogicObserver ob)
+ {
+ observers.add(ob);
+ }
+
+ @Override
+ public void deregisterObserver(LogicObserver ob)
+ {
+ observers.remove(ob);
+ }
+
+ @Override
+ public void notifyObservers()
+ {
+ observers.forEach(ob -> ob.update(this));
+ }
+
}