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.lang.reflect.InvocationTargetException;
   7 import java.util.Collections;
   8 import java.util.HashMap;
   9 import java.util.Map;
  10 import java.util.Objects;
  11 import java.util.function.Supplier;
  12
  13 import com.google.gson.JsonElement;
  14 import com.google.gson.JsonNull;
  15 import com.google.gson.JsonObject;
  16
  17 import net.mograsim.logic.model.model.ViewModelModifiable;
  18 import net.mograsim.logic.model.model.components.GUIComponent;
  19 import net.mograsim.logic.model.model.components.submodels.SubmodelComponent;
  20 import net.mograsim.logic.model.snippets.CodeSnippetSupplier;
  21 import net.mograsim.logic.model.util.JsonHandler;
  22
  23 public class IndirectGUIComponentCreator
  24 {
  25         private static final Map<String, String> standardComponentIDs = new HashMap<>();
  26         private static final Map<String, String> standardComponentIDsUnmodifiable = Collections.unmodifiableMap(standardComponentIDs);
  27
  28         private static final Map<String, ComponentSupplier> componentSuppliers = new HashMap<>();
  29         private static final Map<String, ResourceLoader> resourceLoaders = new HashMap<>();
  30
  31         static
  32         {
  33                 loadStandardComponentIDs(IndirectGUIComponentCreator.class.getResourceAsStream("standardComponentIDMapping.json"));
  34         }
  35
  36         public static void loadStandardComponentIDs(InputStream standardComponentIdMappingStream)
  37         {
  38                 try (InputStream s = standardComponentIdMappingStream)
  39                 {
  40                         if (s == null)
  41                                 throw new IOException("Resource not found");
  42                         Map<String, String> tmp = JsonHandler.readJson(s, Map.class);
  43                         // don't use putAll to apply sanity checks
  44                         tmp.forEach((st, id) ->
  45                         {
  46                                 try
  47                                 {
  48                                         addStandardComponentID(st, id);
  49                                 }
  50                                 catch (IllegalArgumentException e)
  51                                 {
  52                                         System.err.println("Component ID mapping contained illegal entry: " + e.getMessage());
  53                                 }
  54                         });
  55                 }
  56                 catch (IOException e)
  57                 {
  58                         System.err.println("Failed to initialize standard snippet ID mapping: " + e.getMessage());
  59                 }
  60         }
  61
  62         public static void addStandardComponentID(String standardComponentID, String associatedComponentID)
  63         {
  64                 if (!associatedComponentID.matches("(file|class|resource):.+"))
  65                         throw new IllegalArgumentException("Unrecognized component ID format: " + associatedComponentID);
  66                 standardComponentIDs.put(standardComponentID, associatedComponentID);
  67         }
  68
  69         public static Map<String, String> getStandardComponentIDs()
  70         {
  71                 return standardComponentIDsUnmodifiable;
  72         }
  73
  74         public static void setComponentSupplier(String className, ComponentSupplier componentSupplier)
  75         {
  76                 componentSuppliers.put(className, componentSupplier);
  77         }
  78
  79         public static GUIComponent createComponent(ViewModelModifiable model, String id)
  80         {
  81                 return createComponent(model, id, (String) null);
  82         }
  83
  84         public static GUIComponent createComponent(ViewModelModifiable model, String id, String name)
  85         {
  86                 return createComponent(model, id, JsonNull.INSTANCE, name);
  87         }
  88
  89         public static GUIComponent createComponent(ViewModelModifiable model, String id, JsonElement params)
  90         {
  91                 return createComponent(model, id, params, null);
  92         }
  93
  94         public static GUIComponent createComponent(ViewModelModifiable model, String id, JsonElement params, String name)
  95         {
  96                 if (id != null)
  97                 {
  98                         String resolvedID = resolveID(id);
  99                         if (resolvedID != null)
 100                         {
 101                                 if (resolvedID.startsWith("class:"))
 102                                 {
 103                                         String className = resolvedID.substring(6);
 104                                         tryLoadComponentClass(className);
 105                                         ComponentSupplier componentSupplier = componentSuppliers.get(className);
 106                                         if (componentSupplier != null)
 107                                                 return componentSupplier.create(model, params, name);
 108                                         throw new IllegalArgumentException("Component supplier not found for ID " + id + " (resolved: " + resolvedID + ")");
 109                                 } else if (params != null && !JsonNull.INSTANCE.equals(params))
 110                                         throw new IllegalArgumentException("Can't give params to a component deserialized from a JSON file");
 111                                 if (resolvedID.startsWith("resource:"))
 112                                 {
 113                                         String[] parts = resolvedID.split(":");
 114                                         if (parts.length != 3)
 115                                                 throw new IllegalArgumentException("invaild resource id: " + resolvedID);
 116                                         String rLoadID = parts[1];
 117                                         String resID = parts[2];
 118                                         try
 119                                         {
 120                                                 ResourceLoader loader;
 121                                                 if (!resourceLoaders.containsKey(rLoadID))
 122                                                 {
 123                                                         Class<?> c = Class.forName(rLoadID);
 124                                                         if (ResourceLoader.class.isAssignableFrom(c))
 125                                                                 loader = (ResourceLoader) c.getConstructor().newInstance();
 126                                                         else
 127                                                                 loader = (ResourceLoader) Objects.requireNonNull(c.getMethod("resourceLoader").invoke(null));
 128                                                         resourceLoaders.put(rLoadID, loader);
 129                                                 } else
 130                                                 {
 131                                                         loader = Objects.requireNonNull(resourceLoaders.get(parts[1]));
 132                                                 }
 133                                                 JsonObject jsonContents = JsonHandler.readJson(loader.loadResource(resID), JsonObject.class);
 134                                                 return loadComponentFromJsonObject(model, id, name, jsonContents);
 135                                         }
 136                                         catch (IOException e)
 137                                         {
 138                                                 throw new UncheckedIOException(e);
 139                                         }
 140                                         catch (ClassCastException | ReflectiveOperationException e)
 141                                         {
 142                                                 throw new IllegalArgumentException("invaild resource loader specified:" + parts[1], e);
 143                                         }
 144                                 } else if (resolvedID.startsWith("file:"))
 145                                 {
 146                                         try
 147                                         {
 148                                                 String filename = resolvedID.substring(5);
 149                                                 JsonObject jsonContents = JsonHandler.readJson(filename, JsonObject.class);
 150                                                 return loadComponentFromJsonObject(model, id, name, jsonContents);
 151                                         }
 152                                         catch (IOException e)
 153                                         {
 154                                                 throw new UncheckedIOException(e);
 155                                         }
 156                                 } else
 157                                 {
 158                                         throw new IllegalArgumentException("unable to resolve/interpret id" + resolvedID);
 159                                 }
 160                         }
 161                 }
 162                 throw new RuntimeException("Could not get component supplier for ID " + id);
 163         }
 164
 165         public static String resolveID(String id)
 166         {
 167                 if (id.matches("(file|class|resource):.+"))
 168                         return id;
 169                 return standardComponentIDs.get(id);
 170         }
 171
 172         private static SubmodelComponent loadComponentFromJsonObject(ViewModelModifiable model, String id, String name, JsonObject jsonContents)
 173         {
 174                 SerializablePojo jsonContentsAsSerializablePojo = JsonHandler.parser.fromJson(jsonContents, SerializablePojo.class);
 175                 if (jsonContentsAsSerializablePojo.version == null)
 176                         return LegacySubmodelComponentSerializer.deserialize(model,
 177                                         JsonHandler.parser.fromJson(jsonContents, LegacySubmodelComponentParams.class), name, id, null);
 178                 return SubmodelComponentSerializer.deserialize(model, JsonHandler.parser.fromJson(jsonContents, SubmodelComponentParams.class),
 179                                 name, id, null);
 180         }
 181
 182         public static void registerResourceLoader(ResourceLoader resourceLoader)
 183         {
 184                 registerResourceLoader(resourceLoader, resourceLoader.getClass());
 185         }
 186
 187         public static void registerResourceLoader(ResourceLoader resourceLoader, Class<?> reference)
 188         {
 189                 resourceLoaders.put(reference.getName(), Objects.requireNonNull(resourceLoader));
 190         }
 191
 192         public static void registerResourceLoader(ResourceLoader resourceLoader, String reference)
 193         {
 194                 resourceLoaders.put(reference, Objects.requireNonNull(resourceLoader));
 195         }
 196
 197         private static void tryLoadComponentClass(String componentClassName)
 198         {
 199                 CodeSnippetSupplier.tryInvokeStaticInitializer(componentClassName, "Error loading component class %s: %s\n");
 200         }
 201
 202         public static interface ComponentSupplier
 203         {
 204                 public GUIComponent create(ViewModelModifiable model, JsonElement params, String name);
 205         }
 206 }