Start working on recipe transfer handlers in grid..

src/main/java/refinedstorage/jei/GridRecipeTransferHandler.java

@@ -0,0 +1,65 @@
+package refinedstorage.jei;
+
+import mezz.jei.api.gui.IRecipeLayout;
+import mezz.jei.api.recipe.transfer.IRecipeTransferError;
+import mezz.jei.api.recipe.transfer.IRecipeTransferHandler;
+import mezz.jei.gui.ingredients.IGuiIngredient;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.inventory.Container;
+import net.minecraft.inventory.InventoryCrafting;
+import net.minecraft.inventory.Slot;
+import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.nbt.NBTTagList;
+import refinedstorage.RefinedStorage;
+import refinedstorage.container.ContainerGrid;
+import refinedstorage.network.MessageGridCraftingTransfer;
+
+import java.util.List;
+import java.util.Map;
+
+// Thanks to https://github.com/zerofall/EZStorage/blob/master/src/main/java/com/zerofall/ezstorage/jei/RecipeTransferHandler.java
+public class GridRecipeTransferHandler implements IRecipeTransferHandler {
+    @Override
+    public Class<? extends Container> getContainerClass() {
+        return ContainerGrid.class;
+    }
+
+    @Override
+    public String getRecipeCategoryUid() {
+        return "minecraft.crafting";
+    }
+
+    @Override
+    public IRecipeTransferError transferRecipe(Container container, IRecipeLayout recipeLayout, EntityPlayer player, boolean maxTransfer, boolean doTransfer) {
+        if (doTransfer) {
+            Map<Integer, ? extends IGuiIngredient<ItemStack>> inputs = recipeLayout.getItemStacks().getGuiIngredients();
+
+            NBTTagCompound recipe = new NBTTagCompound();
+
+            for (Slot slot : container.inventorySlots) {
+                if (slot.inventory instanceof InventoryCrafting) {
+                    IGuiIngredient<ItemStack> ingredient = inputs.get(slot.getSlotIndex() + 1);
+
+                    if (ingredient != null) {
+                        List<ItemStack> possibleItems = ingredient.getAllIngredients();
+
+                        NBTTagList tags = new NBTTagList();
+
+                        for (ItemStack stack : possibleItems) {
+                            NBTTagCompound tag = new NBTTagCompound();
+                            stack.writeToNBT(tag);
+                            tags.appendTag(tag);
+                        }
+
+                        recipe.setTag("#" + slot.getSlotIndex(), tags);
+                    }
+                }
+            }
+
+            RefinedStorage.NETWORK.sendToServer(new MessageGridCraftingTransfer(recipe));
+        }
+
+        return null;
+    }
+}

src/main/java/refinedstorage/jei/PluginRefinedStorage.java

@@ -13,7 +13,8 @@ import refinedstorage.tile.TileStorage;
 public class PluginRefinedStorage extends BlankModPlugin {
     @Override
     public void register(IModRegistry registry) {
-        // @TODO: JEI transfer handler
+        registry.getRecipeTransferRegistry().addRecipeTransferHandler(new GridRecipeTransferHandler());
+
         registry.addRecipeCategories(new SoldererRecipeCategory(registry.getJeiHelpers().getGuiHelper()));
 
         registry.addRecipeHandlers(new SoldererRecipeHandler());

src/main/java/refinedstorage/network/MessageGridCraftingTransfer.java

@@ -0,0 +1,33 @@
+package refinedstorage.network;
+
+import io.netty.buffer.ByteBuf;
+import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraftforge.fml.common.network.ByteBufUtils;
+import net.minecraftforge.fml.common.network.simpleimpl.IMessage;
+
+public class MessageGridCraftingTransfer extends MessageHandlerPlayerToServer<MessageGridCraftingTransfer> implements IMessage {
+    private NBTTagCompound recipe;
+
+    public MessageGridCraftingTransfer() {
+    }
+
+    public MessageGridCraftingTransfer(NBTTagCompound recipe) {
+        this.recipe = recipe;
+    }
+
+    @Override
+    public void fromBytes(ByteBuf buf) {
+        recipe = ByteBufUtils.readTag(buf);
+    }
+
+    @Override
+    public void toBytes(ByteBuf buf) {
+        ByteBufUtils.writeTag(buf, recipe);
+    }
+
+    @Override
+    public void handle(MessageGridCraftingTransfer message, EntityPlayerMP player) {
+        // @TODO: Make it do something
+    }
+}

src/main/java/refinedstorage/proxy/CommonProxy.java

@@ -38,6 +38,7 @@ public class CommonProxy {
         RefinedStorage.NETWORK.registerMessage(MessagePriorityUpdate.class, MessagePriorityUpdate.class, 10, Side.SERVER);
         RefinedStorage.NETWORK.registerMessage(MessageGridSortingUpdate.class, MessageGridSortingUpdate.class, 11, Side.SERVER);
         RefinedStorage.NETWORK.registerMessage(MessageGridCraftingPush.class, MessageGridCraftingPush.class, 12, Side.SERVER);
+        RefinedStorage.NETWORK.registerMessage(MessageGridCraftingTransfer.class, MessageGridCraftingTransfer.class, 13, Side.SERVER);
 
         NetworkRegistry.INSTANCE.registerGuiHandler(RefinedStorage.INSTANCE, new GuiHandler());
 

src/main/java/refinedstorage/util/InventoryUtils.java

@@ -144,7 +144,6 @@ public class InventoryUtils {
         int toGo = stack.stackSize;
 
         for (int i = 0; i < inventory.getSizeInventory(); ++i) {
-            // @TODO: Test this better
             if (!inventory.isItemValidForSlot(i, stack)) {
                 continue;
             }