Restructured serializing / deserializing

[Mograsim.git] / net.mograsim.logic.ui / src / net / mograsim / logic / ui / serializing / CodeSnippetSupplier.java

diff --git a/net.mograsim.logic.ui/src/net/mograsim/logic/ui/serializing/CodeSnippetSupplier.java b/net.mograsim.logic.ui/src/net/mograsim/logic/ui/serializing/CodeSnippetSupplier.java
new file mode 100644 (file)
index 0000000..abd0e73
--- /dev/null
+++ b/net.mograsim.logic.ui/src/net/mograsim/logic/ui/serializing/CodeSnippetSupplier.java
@@ -0,0 +1,127 @@
+package net.mograsim.logic.ui.serializing;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.Map;
+
+import com.google.gson.JsonElement;
+
+import net.haspamelodica.swt.helper.swtobjectwrappers.Point;
+import net.haspamelodica.swt.helper.swtobjectwrappers.Rectangle;
+import net.mograsim.logic.ui.serializing.snippets.Renderer;
+import net.mograsim.logic.ui.serializing.snippets.RendererProvider;
+import net.mograsim.logic.ui.util.JsonHandler;
+import net.mograsim.preferences.ColorDefinition;
+import net.mograsim.preferences.ColorManager;
+import net.mograsim.preferences.Preferences;
+
+public class CodeSnippetSupplier
+{
+       private static final Map<String, String> standardSnippetIDClassNames = new HashMap<>();
+
+       private static final Map<String, RendererProvider> outlineRendererProvidersForComponentClassNames = new HashMap<>();
+       private static final Map<String, RendererProvider> symbolRendererProvidersForComponentClassNames = new HashMap<>();
+
+       private static final RendererProvider defaultOutlineRendererProvider;
+       private static final RendererProvider defaultSymbolRendererProvider;
+       static
+       {
+               // TODO this code does not belong here
+               defaultOutlineRendererProvider = (comp, params) -> (gc, visReg) ->
+               {
+                       ColorDefinition fg = Preferences.current().getColorDefinition("net.mograsim.logic.ui.color.foreground");
+                       if (fg != null)
+                               gc.setForeground(ColorManager.current().toColor(fg));
+                       gc.drawRectangle(comp.getBounds());
+               };
+               defaultSymbolRendererProvider = (comp, params) -> (gc, visReg) ->
+               {
+                       ColorDefinition fg = Preferences.current().getColorDefinition("net.mograsim.logic.ui.color.text");
+                       if (fg != null)
+                               gc.setForeground(ColorManager.current().toColor(fg));
+                       String id = "TODO";// TODO add an ID of sorts to DeserializedSubmodelComponent
+                       Point idSize = gc.textExtent(id);
+                       Rectangle bounds = comp.getBounds();
+                       gc.drawText(id, bounds.x + (bounds.width - idSize.x) / 2, bounds.y + (bounds.height - idSize.y) / 2, true);
+               };
+       }
+
+       static
+       {
+               try (InputStream s = IndirectGUIComponentCreator.class.getResourceAsStream("./mapping.json"))
+               {
+                       if (s == null)
+                               throw new IOException("Resource not found");
+                       Map<String, String> tmp = JsonHandler.readJson(s, Map.class);
+                       standardSnippetIDClassNames.putAll(tmp);
+               }
+               catch (IOException e)
+               {
+                       System.err.println("Failed to initialize standard snippet ID mapping: " + e.getMessage());
+               }
+       }
+
+       public static void addStandardSnippetID(String standardSnippetID, String associatedSnippetClassName)
+       {
+               standardSnippetIDClassNames.put(standardSnippetID, associatedSnippetClassName);
+       }
+
+       public static void setOutlineRendererProvider(String id, RendererProvider outlineRendererProvider)
+       {
+               outlineRendererProvidersForComponentClassNames.put(id, outlineRendererProvider);
+       }
+
+       public static void setSymbolRendererProvider(String id, RendererProvider symbolRendererProvider)
+       {
+               symbolRendererProvidersForComponentClassNames.put(id, symbolRendererProvider);
+       }
+
+       public static Renderer createOutlineRenderer(String id, DeserializedSubmodelComponent component, JsonElement params)
+       {
+               return getSnippet(id, outlineRendererProvidersForComponentClassNames, defaultOutlineRendererProvider).create(component, params);
+       }
+
+       public static Renderer createSymbolRenderer(String id, DeserializedSubmodelComponent component, JsonElement params)
+       {
+               return getSnippet(id, symbolRendererProvidersForComponentClassNames, defaultSymbolRendererProvider).create(component, params);
+       }
+
+       // TODO report errors
+       private static <C> C getSnippet(String id, Map<String, C> specializedCodeMap, C defaultSnippet)
+       {
+               if (id != null)
+               {
+                       String snippetClassName;
+                       if (id.startsWith("class:"))
+                               snippetClassName = id.substring(6);
+                       else
+                               snippetClassName = standardSnippetIDClassNames.get(id);
+                       if (snippetClassName != null)
+                       {
+                               tryLoadSnippetClass(snippetClassName);
+                               C specializedCode = specializedCodeMap.get(snippetClassName);
+                               if (specializedCode != null)
+                                       return specializedCode;
+                       }
+               }
+               return defaultSnippet;
+       }
+
+       private static void tryLoadSnippetClass(String snippetClassName)
+       {
+               tryLoadClass(snippetClassName, "Error getting snippet code for component class: %s\n");
+       }
+
+       public static void tryLoadClass(String className, String errorMessageFormat)
+       {
+               try
+               {
+                       CodeSnippetSupplier.class.getClassLoader().loadClass(className);
+               }
+               catch (@SuppressWarnings("unused") ClassNotFoundException e)
+               {
+                       System.err.printf(errorMessageFormat, className);
+               }
+       }
+}
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