Introduce ICraftingPatternProvider

src/main/java/refinedstorage/api/autocrafting/ICraftingPatternProvider.java

@@ -0,0 +1,20 @@
+package refinedstorage.api.autocrafting;
+
+import net.minecraft.item.ItemStack;
+
+/**
+ * Implement this interface on pattern items.
+ * When you implement this interface on your patterns, they will be insertable in crafters.
+ *
+ * @todo: Serialization from controller!
+ */
+public interface ICraftingPatternProvider {
+    /**
+     * Creates a crafting pattern.
+     *
+     * @param stack     The pattern stack
+     * @param container The container where the pattern is in
+     * @return The crafting pattern
+     */
+    ICraftingPattern create(ItemStack stack, ICraftingPatternContainer container);
+}

src/main/java/refinedstorage/item/ItemPattern.java

@@ -13,13 +13,17 @@ import net.minecraft.util.text.TextFormatting;
 import net.minecraft.world.World;
 import net.minecraftforge.common.util.Constants;
 import refinedstorage.RefinedStorageItems;
+import refinedstorage.api.autocrafting.ICraftingPattern;
+import refinedstorage.api.autocrafting.ICraftingPatternContainer;
+import refinedstorage.api.autocrafting.ICraftingPatternProvider;
 import refinedstorage.api.storage.CompareUtils;
+import refinedstorage.apiimpl.autocrafting.CraftingPattern;
 
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 
-public class ItemPattern extends ItemBase {
+public class ItemPattern extends ItemBase implements ICraftingPatternProvider {
     public static final String NBT_INPUTS = "Inputs";
     public static final String NBT_OUTPUTS = "Outputs";
     public static final String NBT_BYPRODUCTS = "Byproducts";
@@ -173,4 +177,15 @@ public class ItemPattern extends ItemBase {
 
         return pattern.getTagCompound().getBoolean(NBT_PROCESSING);
     }
+
+    @Override
+    public ICraftingPattern create(ItemStack stack, ICraftingPatternContainer container) {
+        return new CraftingPattern(
+            container.getPosition(),
+            isProcessing(stack),
+            getInputs(stack),
+            getOutputs(stack),
+            getByproducts(stack)
+        );
+    }
 }

src/main/java/refinedstorage/tile/TileController.java

@@ -21,6 +21,7 @@ import refinedstorage.RefinedStorageBlocks;
 import refinedstorage.api.RefinedStorageAPI;
 import refinedstorage.api.autocrafting.ICraftingPattern;
 import refinedstorage.api.autocrafting.ICraftingPatternContainer;
+import refinedstorage.api.autocrafting.ICraftingPatternProvider;
 import refinedstorage.api.autocrafting.registry.ICraftingTaskFactory;
 import refinedstorage.api.autocrafting.task.ICraftingTask;
 import refinedstorage.api.network.*;
@@ -50,7 +51,6 @@ import refinedstorage.integration.ic2.IControllerEnergyIC2;
 import refinedstorage.integration.ic2.IntegrationIC2;
 import refinedstorage.integration.tesla.ControllerEnergyTesla;
 import refinedstorage.integration.tesla.IntegrationTesla;
-import refinedstorage.item.ItemPattern;
 import refinedstorage.network.MessageGridFluidDelta;
 import refinedstorage.network.MessageGridFluidUpdate;
 import refinedstorage.network.MessageGridItemDelta;
@@ -467,16 +467,10 @@ public class TileController extends TileBase implements INetworkMaster, IEnergyR
                 ICraftingPatternContainer container = (ICraftingPatternContainer) node;
 
                 for (int i = 0; i < container.getPatterns().getSlots(); ++i) {
-                    ItemStack pattern = container.getPatterns().getStackInSlot(i);
+                    ItemStack stack = container.getPatterns().getStackInSlot(i);
 
-                    if (pattern != null && ItemPattern.isValid(pattern)) {
-                        patterns.add(new CraftingPattern(
-                            container.getPosition(),
-                            ItemPattern.isProcessing(pattern),
-                            ItemPattern.getInputs(pattern),
-                            ItemPattern.getOutputs(pattern),
-                            ItemPattern.getByproducts(pattern)
-                        ));
+                    if (stack != null) {
+                        patterns.add(((ICraftingPatternProvider) stack.getItem()).create(stack, container));
                     }
                 }
             }

src/main/java/refinedstorage/tile/TileCrafter.java

@@ -7,16 +7,15 @@ import net.minecraftforge.items.CapabilityItemHandler;
 import net.minecraftforge.items.IItemHandler;
 import net.minecraftforge.items.wrapper.CombinedInvWrapper;
 import refinedstorage.RefinedStorage;
-import refinedstorage.RefinedStorageItems;
 import refinedstorage.api.autocrafting.ICraftingPatternContainer;
+import refinedstorage.api.autocrafting.ICraftingPatternProvider;
 import refinedstorage.api.network.INetworkMaster;
 import refinedstorage.inventory.ItemHandlerBasic;
 import refinedstorage.inventory.ItemHandlerUpgrade;
-import refinedstorage.item.ItemPattern;
 import refinedstorage.item.ItemUpgrade;
 
 public class TileCrafter extends TileNode implements ICraftingPatternContainer {
-    private ItemHandlerBasic patterns = new ItemHandlerBasic(9, this, stack -> (stack.getItem() == RefinedStorageItems.PATTERN && ItemPattern.isValid(stack))) {
+    private ItemHandlerBasic patterns = new ItemHandlerBasic(9, this, stack -> stack.getItem() instanceof ICraftingPatternProvider) {
         @Override
         protected void onContentsChanged(int slot) {
             super.onContentsChanged(slot);