net.mograsim.logic.model/src/net/mograsim/logic/model/snippets/highlevelstatehandlers/standard/subcomponent/DelegatingSubcomponentHighLevelStateHandler.java

   1 package net.mograsim.logic.model.snippets.highlevelstatehandlers.standard.subcomponent;
   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.HighLevelStateHandlerContext;
   8 import net.mograsim.logic.model.snippets.highlevelstatehandlers.standard.StandardHighLevelStateHandlerSnippetSuppliers;
   9
  10 public class DelegatingSubcomponentHighLevelStateHandler implements SubcomponentHighLevelStateHandler
  11 {
  12         private final SubmodelComponent parentComponent;
  13         private ModelComponent delegateTarget;
  14         private String prefix;
  15
  16         public DelegatingSubcomponentHighLevelStateHandler(HighLevelStateHandlerContext context)
  17         {
  18                 this(context, null);
  19         }
  20
  21         public DelegatingSubcomponentHighLevelStateHandler(HighLevelStateHandlerContext context,
  22                         DelegatingSubcomponentHighLevelStateHandlerParams params)
  23         {
  24                 this.parentComponent = context.component;
  25                 if (params != null)
  26                 {
  27                         // TODO document this
  28                         if (params.delegateTarget == null)
  29                                 setDelegateTarget(parentComponent);
  30                         else
  31                         {
  32                                 ModelComponent delegateTarget = parentComponent.submodel.getComponentsByName().get(params.delegateTarget);
  33                                 if (delegateTarget == null)
  34                                         throw new NullPointerException("No subcomponent with name " + params.delegateTarget);
  35                                 setDelegateTarget(delegateTarget);
  36                         }
  37                         setPrefix(params.prefix);
  38                 }
  39                 parentComponent.submodel.addComponentRemovedListener(c ->
  40                 {
  41                         if (delegateTarget == c)
  42                                 delegateTarget = null;
  43                 });
  44         }
  45
  46         public void set(ModelComponent delegateTarget, String prefix)
  47         {
  48                 setDelegateTarget(delegateTarget);
  49                 setPrefix(prefix);
  50         }
  51
  52         public void setDelegateTarget(ModelComponent delegateTarget)
  53         {
  54                 if (delegateTarget == null)
  55                         this.delegateTarget = parentComponent;
  56                 else if (parentComponent.submodel.getComponentsByName().get(delegateTarget.getName()) != delegateTarget)
  57                         throw new IllegalArgumentException(
  58                                         "Can only set components belonging to the submodel of the parent component of this handler as the delegate target");
  59                 this.delegateTarget = delegateTarget;
  60         }
  61
  62         public ModelComponent getDelegateTarget()
  63         {
  64                 return delegateTarget;
  65         }
  66
  67         public void setPrefix(String prefix)
  68         {
  69                 this.prefix = prefix;
  70         }
  71
  72         public String getPrefix()
  73         {
  74                 return prefix;
  75         }
  76
  77         @Override
  78         public Object getHighLevelState(String subStateID)
  79         {
  80                 if (delegateTarget == null)
  81                         throw new IllegalStateException("Delegating to a component that was destroyed");
  82                 return delegateTarget.getHighLevelState(getDelegateTargetHighLevelStateID(subStateID));
  83         }
  84
  85         @Override
  86         public void setHighLevelState(String subStateID, Object newState)
  87         {
  88                 if (delegateTarget == null)
  89                         throw new IllegalStateException("Delegating to a component that was destroyed");
  90                 delegateTarget.setHighLevelState(getDelegateTargetHighLevelStateID(subStateID), newState);
  91         }
  92
  93         private String getDelegateTargetHighLevelStateID(String subStateID)
  94         {
  95                 return prefix == null ? subStateID : prefix + '.' + subStateID;
  96         }
  97
  98         @Override
  99         public String getIDForSerializing(IdentifyParams idParams)
 100         {
 101                 return "delegating";
 102         }
 103
 104         @Override
 105         public DelegatingSubcomponentHighLevelStateHandlerParams getParamsForSerializing(IdentifyParams idParams)
 106         {
 107                 DelegatingSubcomponentHighLevelStateHandlerParams params = new DelegatingSubcomponentHighLevelStateHandlerParams();
 108                 params.delegateTarget = delegateTarget.getName();
 109                 params.prefix = prefix;
 110                 return params;
 111         }
 112
 113         public static class DelegatingSubcomponentHighLevelStateHandlerParams
 114         {
 115                 public String delegateTarget;
 116                 public String prefix;
 117         }
 118
 119         static
 120         {
 121                 StandardHighLevelStateHandlerSnippetSuppliers.subcomponentHandlerSupplier
 122                                 .setSnippetSupplier(DelegatingSubcomponentHighLevelStateHandler.class.getCanonicalName(), SnippetDefinintion
 123                                                 .create(DelegatingSubcomponentHighLevelStateHandlerParams.class, DelegatingSubcomponentHighLevelStateHandler::new));
 124         }
 125 }