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   1 package net.mograsim.logic.model.snippets.highlevelstatehandlers.standard.atomic;
   2
   3 import net.mograsim.logic.model.model.components.ModelComponent;
   4 import net.mograsim.logic.model.model.components.submodels.SubmodelComponent;
   5 import net.mograsim.logic.model.serializing.IdentifyParams;
   6 import net.mograsim.logic.model.snippets.SnippetDefinintion;
   7 import net.mograsim.logic.model.snippets.highlevelstatehandlers.standard.StandardHighLevelStateHandlerSnippetSuppliers;
   8
   9 public class DelegatingAtomicHighLevelStateHandler implements AtomicHighLevelStateHandler
  10 {
  11         private final SubmodelComponent parentComponent;
  12         private ModelComponent delegateTarget;
  13         private String subStateID;
  14
  15         public DelegatingAtomicHighLevelStateHandler(SubmodelComponent component)
  16         {
  17                 this(component, null);
  18         }
  19
  20         public DelegatingAtomicHighLevelStateHandler(SubmodelComponent component, DelegatingAtomicHighLevelStateHandlerParams params)
  21         {
  22                 this.parentComponent = component;
  23                 if (params != null)
  24                 {
  25                         // TODO document this
  26                         if (params.delegateTarget == null)
  27                                 setDelegateTarget(parentComponent);
  28                         else
  29                         {
  30                                 ModelComponent delegateTarget = parentComponent.submodel.getComponentsByName().get(params.delegateTarget);
  31                                 if (delegateTarget == null)
  32                                         throw new NullPointerException("No subcomponent with name " + params.delegateTarget);
  33                                 setDelegateTarget(delegateTarget);
  34                         }
  35                         setSubStateID(params.subStateID);
  36                 }
  37                 parentComponent.submodel.addComponentRemovedListener(c ->
  38                 {
  39                         if (delegateTarget == c)
  40                                 delegateTarget = null;
  41                 });
  42         }
  43
  44         public void set(ModelComponent delegateTarget, String subStateID)
  45         {
  46                 setDelegateTarget(delegateTarget);
  47                 setSubStateID(subStateID);
  48         }
  49
  50         public void setDelegateTarget(ModelComponent delegateTarget)
  51         {
  52                 if (delegateTarget == null)
  53                         this.delegateTarget = parentComponent;
  54                 else if (parentComponent.submodel.getComponentsByName().get(delegateTarget.getName()) != delegateTarget)
  55                         throw new IllegalArgumentException(
  56                                         "Can only set components belonging to the submodel of the parent component of this handler as the delegate target");
  57                 this.delegateTarget = delegateTarget;
  58         }
  59
  60         public ModelComponent getDelegateTarget()
  61         {
  62                 return delegateTarget;
  63         }
  64
  65         public void setSubStateID(String subStateID)
  66         {
  67                 this.subStateID = subStateID;
  68         }
  69
  70         public String getSubStateID()
  71         {
  72                 return subStateID;
  73         }
  74
  75         @Override
  76         public Object getHighLevelState()
  77         {
  78                 if (delegateTarget == null)
  79                         throw new IllegalStateException("Delegating to a component that was destroyed");
  80                 return delegateTarget.getHighLevelState(subStateID);
  81         }
  82
  83         @Override
  84         public void setHighLevelState(Object newState)
  85         {
  86                 if (delegateTarget == null)
  87                         throw new IllegalStateException("Delegating to a component that was destroyed");
  88                 delegateTarget.setHighLevelState(subStateID, newState);
  89         }
  90
  91         @Override
  92         public String getIDForSerializing(IdentifyParams idParams)
  93         {
  94                 return "delegating";
  95         }
  96
  97         @Override
  98         public DelegatingAtomicHighLevelStateHandlerParams getParamsForSerializing(IdentifyParams idParams)
  99         {
 100                 if (delegateTarget == null)
 101                         throw new IllegalStateException("Delegating to a component that was destroyed");
 102                 DelegatingAtomicHighLevelStateHandlerParams params = new DelegatingAtomicHighLevelStateHandlerParams();
 103                 params.delegateTarget = delegateTarget == parentComponent ? null : delegateTarget.getName();
 104                 params.subStateID = subStateID;
 105                 return params;
 106         }
 107
 108         public static class DelegatingAtomicHighLevelStateHandlerParams
 109         {
 110                 public String delegateTarget;
 111                 public String subStateID;
 112         }
 113
 114         static
 115         {
 116                 StandardHighLevelStateHandlerSnippetSuppliers.atomicHandlerSupplier.setSnippetSupplier(
 117                                 DelegatingAtomicHighLevelStateHandler.class.getCanonicalName(),
 118                                 SnippetDefinintion.create(DelegatingAtomicHighLevelStateHandlerParams.class, DelegatingAtomicHighLevelStateHandler::new));
 119         }
 120 }