net.mograsim.logic.model/src/net/mograsim/logic/model/serializing/IndirectGUIComponentCreator.java

   1 package net.mograsim.logic.model.serializing;
   2
   3 import java.io.IOException;
   4 import java.io.InputStream;
   5 import java.io.UncheckedIOException;
   6 import java.util.Collection;
   7 import java.util.HashMap;
   8 import java.util.Map;
   9
  10 import com.google.gson.JsonElement;
  11 import com.google.gson.JsonNull;
  12
  13 import net.mograsim.logic.model.model.ViewModelModifiable;
  14 import net.mograsim.logic.model.model.components.GUIComponent;
  15 import net.mograsim.logic.model.snippets.CodeSnippetSupplier;
  16 import net.mograsim.logic.model.util.JsonHandler;
  17
  18 public class IndirectGUIComponentCreator
  19 {
  20         private static final Map<String, String> standardComponentIDs = new HashMap<>();
  21
  22         private static final Map<String, ComponentSupplier> componentSuppliers = new HashMap<>();
  23
  24         static
  25         {
  26                 try (InputStream s = IndirectGUIComponentCreator.class.getResourceAsStream("./standardComponentIDMapping.json"))
  27                 {
  28                         if (s == null)
  29                                 throw new IOException("Resource not found");
  30                         Map<String, String> tmp = JsonHandler.readJson(s, Map.class);
  31                         // don't use putAll to apply sanity checks
  32                         tmp.forEach((st, id) ->
  33                         {
  34                                 try
  35                                 {
  36                                         addStandardComponentID(st, id);
  37                                 }
  38                                 catch (IllegalArgumentException e)
  39                                 {
  40                                         System.err.println("Component ID mapping contained illegal entry: " + e.getMessage());
  41                                 }
  42                         });
  43                 }
  44                 catch (IOException e)
  45                 {
  46                         System.err.println("Failed to initialize standard snippet ID mapping: " + e.getMessage());
  47                 }
  48         }
  49
  50         public static void addStandardComponentID(String standardComponentID, String associatedComponentID)
  51         {
  52                 if (!associatedComponentID.startsWith("file:") && !associatedComponentID.startsWith("class:"))
  53                         throw new IllegalArgumentException("Unrecognized component ID format: " + associatedComponentID);
  54                 standardComponentIDs.put(standardComponentID, associatedComponentID);
  55         }
  56
  57         public static Collection<String> getStandardComponentIDs()
  58         {
  59                 return standardComponentIDs.keySet();
  60         }
  61
  62         public static void setComponentSupplier(String className, ComponentSupplier componentSupplier)
  63         {
  64                 componentSuppliers.put(className, componentSupplier);
  65         }
  66
  67         public static GUIComponent createComponent(ViewModelModifiable model, String id)
  68         {
  69                 return createComponent(model, id, (String) null);
  70         }
  71
  72         public static GUIComponent createComponent(ViewModelModifiable model, String id, String name)
  73         {
  74                 return createComponent(model, id, JsonNull.INSTANCE, name);
  75         }
  76
  77         public static GUIComponent createComponent(ViewModelModifiable model, String id, JsonElement params)
  78         {
  79                 return createComponent(model, id, params, null);
  80         }
  81
  82         public static GUIComponent createComponent(ViewModelModifiable model, String id, JsonElement params, String name)
  83         {
  84                 if (id != null)
  85                 {
  86                         String resolvedID;
  87                         if (id.startsWith("class:") || id.startsWith("file:"))
  88                                 resolvedID = id;
  89                         else
  90                                 resolvedID = standardComponentIDs.get(id);
  91                         if (resolvedID.startsWith("class:"))
  92                         {
  93                                 String className = resolvedID.substring(6);
  94                                 tryLoadComponentClass(className);
  95                                 ComponentSupplier componentSupplier = componentSuppliers.get(className);
  96                                 if (componentSupplier != null)
  97                                         return componentSupplier.create(model, params, name);
  98                         } else
  99                         // we know id has to start with "file:" here
 100                         // because standardComponentIDs only contains strings starting with "class:" or "file:"
 101                         if (params != null && !JsonNull.INSTANCE.equals(params))
 102                                 throw new IllegalArgumentException("Can't give params to a component deserialized from a JSON file");
 103                         try
 104                         {
 105                                 return SubmodelComponentSerializer.deserialize(model, resolvedID.substring(5), name, id, null);
 106                         }
 107                         catch (IOException e)
 108                         {
 109                                 throw new UncheckedIOException(e);
 110                         }
 111                 }
 112                 throw new RuntimeException("Could not get component supplier for ID " + id);
 113         }
 114
 115         private static void tryLoadComponentClass(String componentClassName)
 116         {
 117                 CodeSnippetSupplier.tryInvokeStaticInitializer(componentClassName, "Error loading component class %s: %s\n");
 118         }
 119
 120         public static interface ComponentSupplier
 121         {
 122                 public GUIComponent create(ViewModelModifiable model, JsonElement params, String name);
 123         }
 124 }