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