net.mograsim.logic.ui.am2900/src/net/mograsim/logic/ui/model/components/mi/nandbased/GUI_rsLatch.java

   1 package net.mograsim.logic.ui.model.components.mi.nandbased;
   2
   3 import net.haspamelodica.swt.helper.swtobjectwrappers.Point;
   4 import net.mograsim.logic.core.types.Bit;
   5 import net.mograsim.logic.core.types.BitVector;
   6 import net.mograsim.logic.ui.model.ViewModelModifiable;
   7 import net.mograsim.logic.ui.model.components.GUINandGate;
   8 import net.mograsim.logic.ui.model.components.SimpleRectangularSubmodelComponent;
   9 import net.mograsim.logic.ui.model.wires.GUIWire;
  10 import net.mograsim.logic.ui.model.wires.Pin;
  11 import net.mograsim.logic.ui.model.wires.WireCrossPoint;
  12
  13 public class GUI_rsLatch extends SimpleRectangularSubmodelComponent
  14 {
  15         private GUIWire wireQ, wire_Q;
  16
  17         public GUI_rsLatch(ViewModelModifiable model)
  18         {
  19                 super(model, 1, "_rsLatch");
  20                 setSubmodelScale(.4);
  21                 setInputPins("_S", "_R");
  22                 setOutputPins("Q", "_Q");
  23                 initSubmodelComponents();
  24         }
  25
  26         @SuppressWarnings("unused") // for GUIWires being created
  27         private void initSubmodelComponents()
  28         {
  29                 Pin _S = getSubmodelPin("_S");
  30                 Pin _R = getSubmodelPin("_R");
  31                 Pin Q = getSubmodelPin("Q");
  32                 Pin _Q = getSubmodelPin("_Q");
  33
  34                 GUINandGate nand1 = new GUINandGate(submodelModifiable, 1);
  35                 GUINandGate nand2 = new GUINandGate(submodelModifiable, 1);
  36
  37                 WireCrossPoint cp1 = new WireCrossPoint(submodelModifiable, 1);
  38                 WireCrossPoint cp2 = new WireCrossPoint(submodelModifiable, 1);
  39
  40                 nand1.moveTo(10, 7.5);
  41                 nand2.moveTo(40, 12.5);
  42                 cp1.moveCenterTo(35, 17.5);
  43                 cp2.moveCenterTo(65, 37.5);
  44
  45                 new GUIWire(submodelModifiable, _S, nand1.getPin("A"), new Point[0]);
  46                 new GUIWire(submodelModifiable, _R, nand2.getPin("B"), new Point(35, 37.5), new Point(35, 27.5));
  47                 new GUIWire(submodelModifiable, nand1.getPin("Y"), cp1, new Point[0]);
  48                 new GUIWire(submodelModifiable, nand2.getPin("Y"), cp2, new Point(65, 22.5));
  49                 new GUIWire(submodelModifiable, cp1, nand2.getPin("A"), new Point[0]);
  50                 new GUIWire(submodelModifiable, cp2, nand1.getPin("B"), new Point(65, 42.5), new Point(5, 42.5), new Point(5, 22.5));
  51                 wireQ = new GUIWire(submodelModifiable, cp1, Q, new Point(35, 17.5), new Point(35, 7.5), new Point(65, 7.5), new Point(65, 12.5));
  52                 wire_Q = new GUIWire(submodelModifiable, cp2, _Q, new Point[0]);
  53
  54                 addAtomicHighLevelStateID("q");
  55         }
  56
  57         @Override
  58         public void setAtomicHighLevelState(String stateID, Object newState)
  59         {
  60                 switch (stateID)
  61                 {
  62                 case "q":
  63                         if (wireQ != null)
  64                         {
  65                                 // TODO force this to happen without any Timeline updates in the meantime.
  66                                 // Maybe make it a requirement of setHighLevelState that the Timeline is "halted" during a call?
  67                                 Bit newStateCasted = (Bit) newState;
  68                                 BitVector newStateVector = BitVector.of(newStateCasted);
  69                                 if (wireQ.hasLogicModelBinding())
  70                                         wireQ.forceWireValues(newStateVector);
  71                                 // We set both wires because then both outputs go to their correct state at the same time, and to avoid problems when not
  72                                 // both
  73                                 // inputs are 1
  74                                 if (wire_Q.hasLogicModelBinding())
  75                                         wire_Q.forceWireValues(newStateVector.not());
  76                         }
  77                         break;
  78                 default:
  79                         // should not happen because we tell SubmodelComponent to only allow these state IDs.
  80                         throw new IllegalStateException("Illegal atomic state ID: " + stateID);
  81                 }
  82         }
  83
  84         @Override
  85         public Object getAtomicHighLevelState(String stateID)
  86         {
  87                 switch (stateID)
  88                 {
  89                 case "q":
  90                         if (wireQ.hasLogicModelBinding())
  91                                 return wireQ.getWireValues().getBit(0);
  92                         return null;
  93                 default:
  94                         // should not happen because we tell SubmodelComponent to only allow these state IDs.
  95                         throw new IllegalStateException("Illegal atomic state ID: " + stateID);
  96                 }
  97         }
  98 }