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.GUIComponent;
   4 import net.mograsim.logic.model.model.components.submodels.SubmodelComponent;
   5 import net.mograsim.logic.model.snippets.highlevelstatehandlers.standard.HighLevelStateHandlerContext;
   6
   7 public class DelegatingSubcomponentHighLevelStateHandler implements SubcomponentHighLevelStateHandler
   8 {
   9         private final SubmodelComponent parentComponent;
  10         private GUIComponent delegateTarget;
  11         private String prefix;
  12
  13         public DelegatingSubcomponentHighLevelStateHandler(HighLevelStateHandlerContext context)
  14         {
  15                 this(context, null);
  16         }
  17
  18         public DelegatingSubcomponentHighLevelStateHandler(HighLevelStateHandlerContext context,
  19                         DelegatingSubcomponentHighLevelStateHandlerParams params)
  20         {
  21                 this.parentComponent = context.component;
  22                 if (params != null)
  23                 {
  24                         // TODO document this
  25                         if (params.delegateTarget == null)
  26                                 setDelegateTarget(parentComponent);
  27                         else
  28                                 this.delegateTarget = parentComponent.submodel.getComponentsByName().get(params.delegateTarget);
  29                         setPrefix(prefix);
  30                 }
  31         }
  32
  33         public void set(GUIComponent delegateTarget, String prefix)
  34         {
  35                 setDelegateTarget(delegateTarget);
  36                 setPrefix(prefix);
  37         }
  38
  39         public void setDelegateTarget(GUIComponent delegateTarget)
  40         {
  41                 if (delegateTarget == null)
  42                         this.delegateTarget = parentComponent;
  43                 else if (!parentComponent.submodel.getComponentsByName().containsValue(delegateTarget))
  44                         throw new IllegalArgumentException(
  45                                         "Can only set components belonging to the submodel of the parent component of this handler as the delegate target");
  46                 this.delegateTarget = delegateTarget;
  47         }
  48
  49         public void setPrefix(String prefix)
  50         {
  51                 this.prefix = prefix;
  52         }
  53
  54         @Override
  55         public Object getHighLevelState(String subStateID)
  56         {
  57                 return delegateTarget.getHighLevelState(getDelegateTargetHighLevelStateID(subStateID));
  58         }
  59
  60         @Override
  61         public void setHighLevelState(String subStateID, Object newState)
  62         {
  63                 delegateTarget.setHighLevelState(getDelegateTargetHighLevelStateID(subStateID), newState);
  64         }
  65
  66         private String getDelegateTargetHighLevelStateID(String subStateID)
  67         {
  68                 return prefix == null ? subStateID : prefix + '.' + subStateID;
  69         }
  70
  71         public static class DelegatingSubcomponentHighLevelStateHandlerParams
  72         {
  73                 public String delegateTarget;
  74                 public String prefix;
  75         }
  76 }