net.mograsim.logic.core/src/net/mograsim/logic/core/components/ManualSwitch.java

   1 package net.mograsim.logic.core.components;\r
   2 \r
   3 import java.util.ArrayList;\r
   4 import java.util.Collection;\r
   5 import java.util.List;\r
   6 \r
   7 import net.mograsim.logic.core.LogicObservable;\r
   8 import net.mograsim.logic.core.LogicObserver;\r
   9 import net.mograsim.logic.core.timeline.Timeline;\r
  10 import net.mograsim.logic.core.types.Bit;\r
  11 import net.mograsim.logic.core.types.BitVector;\r
  12 import net.mograsim.logic.core.wires.Wire.ReadEnd;\r
  13 import net.mograsim.logic.core.wires.Wire.ReadWriteEnd;\r
  14 \r
  15 /**\r
  16  * This class models a simple on/off (ONE/ZERO) switch for user interaction.\r
  17  *\r
  18  * @author Christian Femers\r
  19  *\r
  20  */\r
  21 public class ManualSwitch extends Component implements LogicObservable\r
  22 {\r
  23         private Collection<LogicObserver> observers;\r
  24         private ReadWriteEnd output;\r
  25 \r
  26         public ManualSwitch(Timeline timeline, ReadWriteEnd output)\r
  27         {\r
  28                 super(timeline);\r
  29                 observers = new ArrayList<>();\r
  30                 this.output = output;\r
  31         }\r
  32 \r
  33         public void switchFullOn()\r
  34         {\r
  35                 setState(BitVector.of(Bit.ONE, output.length()));\r
  36         }\r
  37 \r
  38         public void switchFullOff()\r
  39         {\r
  40                 setState(BitVector.of(Bit.ZERO, output.length()));\r
  41         }\r
  42 \r
  43         public void toggle()\r
  44         {\r
  45                 if (isFullOn())\r
  46                         switchFullOff();\r
  47                 else\r
  48                         switchFullOn();\r
  49         }\r
  50 \r
  51         public void setState(Bit bit)\r
  52         {\r
  53                 setState(BitVector.of(bit));\r
  54         }\r
  55 \r
  56         public void setState(BitVector bits)\r
  57         {\r
  58                 if (bits.length() != output.length())\r
  59                         throw new IllegalArgumentException("Incorrect bit vector length");\r
  60                 if (bits.equals(output.getInputValues()))\r
  61                         return;\r
  62                 output.feedSignals(bits);\r
  63                 notifyObservers();\r
  64         }\r
  65 \r
  66         public boolean isFullOn()\r
  67         {\r
  68                 return BitVector.of(Bit.ONE, output.length()).equals(output.getInputValues());\r
  69         }\r
  70 \r
  71         public BitVector getValues()\r
  72         {\r
  73                 return output.getInputValues();\r
  74         }\r
  75 \r
  76         @Override\r
  77         public List<ReadEnd> getAllInputs()\r
  78         {\r
  79                 return List.of();\r
  80         }\r
  81 \r
  82         @Override\r
  83         public List<ReadWriteEnd> getAllOutputs()\r
  84         {\r
  85                 return List.of(output);\r
  86         }\r
  87 \r
  88         @Override\r
  89         public void registerObserver(LogicObserver ob)\r
  90         {\r
  91                 observers.add(ob);\r
  92         }\r
  93 \r
  94         @Override\r
  95         public void deregisterObserver(LogicObserver ob)\r
  96         {\r
  97                 observers.remove(ob);\r
  98         }\r
  99 \r
 100         @Override\r
 101         public void notifyObservers()\r
 102         {\r
 103                 observers.forEach(ob -> ob.update(this));\r
 104         }\r
 105 \r
 106 }\r