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