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.Collections;
   8 import java.util.HashMap;
   9 import java.util.Map;
  10 import java.util.Set;
  11
  12 import com.google.gson.JsonElement;
  13 import com.google.gson.JsonNull;
  14
  15 import net.mograsim.logic.model.model.ViewModelModifiable;
  16 import net.mograsim.logic.model.model.components.GUIComponent;
  17 import net.mograsim.logic.model.snippets.CodeSnippetSupplier;
  18 import net.mograsim.logic.model.util.JsonHandler;
  19
  20 public class IndirectGUIComponentCreator
  21 {
  22         private static final Map<String, String> standardComponentIDs = new HashMap<>();
  23         private static final Set<String> standardComponentIDSetUnmodifiable = Collections.unmodifiableSet(standardComponentIDs.keySet());
  24
  25         private static final Map<String, ComponentSupplier> componentSuppliers = new HashMap<>();
  26
  27         static
  28         {
  29                 try (InputStream s = IndirectGUIComponentCreator.class.getResourceAsStream("./standardComponentIDMapping.json"))
  30                 {
  31                         if (s == null)
  32                                 throw new IOException("Resource not found");
  33                         Map<String, String> tmp = JsonHandler.readJson(s, Map.class);
  34                         // don't use putAll to apply sanity checks
  35                         tmp.forEach((st, id) ->
  36                         {
  37                                 try
  38                                 {
  39                                         addStandardComponentID(st, id);
  40                                 }
  41                                 catch (IllegalArgumentException e)
  42                                 {
  43                                         System.err.println("Component ID mapping contained illegal entry: " + e.getMessage());
  44                                 }
  45                         });
  46                 }
  47                 catch (IOException e)
  48                 {
  49                         System.err.println("Failed to initialize standard snippet ID mapping: " + e.getMessage());
  50                 }
  51         }
  52
  53         public static void addStandardComponentID(String standardComponentID, String associatedComponentID)
  54         {
  55                 if (!associatedComponentID.startsWith("file:") && !associatedComponentID.startsWith("class:"))
  56                         throw new IllegalArgumentException("Unrecognized component ID format: " + associatedComponentID);
  57                 standardComponentIDs.put(standardComponentID, associatedComponentID);
  58         }
  59
  60         public static Collection<String> getStandardComponentIDs()
  61         {
  62                 return standardComponentIDSetUnmodifiable;
  63         }
  64
  65         public static void setComponentSupplier(String className, ComponentSupplier componentSupplier)
  66         {
  67                 componentSuppliers.put(className, componentSupplier);
  68         }
  69
  70         public static GUIComponent createComponent(ViewModelModifiable model, String id)
  71         {
  72                 return createComponent(model, id, (String) null);
  73         }
  74
  75         public static GUIComponent createComponent(ViewModelModifiable model, String id, String name)
  76         {
  77                 return createComponent(model, id, JsonNull.INSTANCE, name);
  78         }
  79
  80         public static GUIComponent createComponent(ViewModelModifiable model, String id, JsonElement params)
  81         {
  82                 return createComponent(model, id, params, null);
  83         }
  84
  85         public static GUIComponent createComponent(ViewModelModifiable model, String id, JsonElement params, String name)
  86         {
  87                 if (id != null)
  88                 {
  89                         String resolvedID;
  90                         if (id.startsWith("class:") || id.startsWith("file:"))
  91                                 resolvedID = id;
  92                         else
  93                                 resolvedID = standardComponentIDs.get(id);
  94                         if (resolvedID.startsWith("class:"))
  95                         {
  96                                 String className = resolvedID.substring(6);
  97                                 tryLoadComponentClass(className);
  98                                 ComponentSupplier componentSupplier = componentSuppliers.get(className);
  99                                 if (componentSupplier != null)
 100                                         return componentSupplier.create(model, params, name);
 101                         } else
 102                         // we know id has to start with "file:" here
 103                         // because standardComponentIDs only contains strings starting with "class:" or "file:"
 104                         if (params != null && !JsonNull.INSTANCE.equals(params))
 105                                 throw new IllegalArgumentException("Can't give params to a component deserialized from a JSON file");
 106                         try
 107                         {
 108                                 return SubmodelComponentSerializer.deserialize(model, resolvedID.substring(5), name, id, null);
 109                         }
 110                         catch (IOException e)
 111                         {
 112                                 throw new UncheckedIOException(e);
 113                         }
 114                 }
 115                 throw new RuntimeException("Could not get component supplier for ID " + id);
 116         }
 117
 118         private static void tryLoadComponentClass(String componentClassName)
 119         {
 120                 CodeSnippetSupplier.tryInvokeStaticInitializer(componentClassName, "Error loading component class %s: %s\n");
 121         }
 122
 123         public static interface ComponentSupplier
 124         {
 125                 public GUIComponent create(ViewModelModifiable model, JsonElement params, String name);
 126         }
 127 }