fix

src/main/java/me/towdium/jecalculation/data/Controller.java

@@ -10,16 +10,11 @@ import me.towdium.jecalculation.data.structure.Recipe;
 import me.towdium.jecalculation.data.structure.Recipes;
 import me.towdium.jecalculation.utils.Utilities;
 import me.towdium.jecalculation.utils.wrappers.Pair;
-import me.towdium.jecalculation.utils.wrappers.Trio;
 import net.minecraft.item.ItemStack;
-import net.minecraft.nbt.CompressedStreamTools;
 import net.minecraft.nbt.NBTTagCompound;
 
 import javax.annotation.ParametersAreNonnullByDefault;
 import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
 import java.util.*;
 import java.util.function.Function;
 import java.util.stream.Collectors;
@@ -35,8 +30,10 @@ public class Controller {
     public static final String KEY_RECIPES = "recipes";
     public static final String KEY_RECENTS = "recents";
     public static final String KEY_AMOUNT = "amount";
+    public static final String KEY_INVENTORY = "inventory";
     static Recipes recipesClient;
     static Recents recentsClient;
+    static boolean inventoryClient;
     static String amountClient;
 
     static Recipes getRecord() {
@@ -51,26 +48,26 @@ public class Controller {
     public static List<Pair<String, Recipes>> discover() {
         File dir = JecaConfig.dataDir;
         File[] fs = dir.listFiles();
-        if (fs == null) return new ArrayList<>();
+        if (fs == null)
+            return new ArrayList<>();
         Function<File, Recipes> read = f -> {
             NBTTagCompound nbt = Utilities.Json.read(f);
             JustEnoughCalculation.logger.warn("File " + f.getAbsolutePath() + " contains invalid records.");
             return nbt == null ? null : new Recipes(nbt);
         };
-        return Arrays.stream(fs)
-                     .map(i -> new Pair<>(i.getName(), read.apply(i)))
-                     .filter(i -> i.two != null)
+        return Arrays.stream(fs).map(i -> new Pair<>(i.getName(), read.apply(i))).filter(i -> i.two != null)
                      .collect(Collectors.toList());
     }
 
     public static void inport(Recipes recipes, String group) {
         ArrayList<Recipe> buffer = new ArrayList<>();
-        recipes.getGroup(group).forEach(i ->
-                                                getRecord().getGroup(group).stream().filter(j -> j.equals(i)).findAny().orElseGet(() -> {
-                                                    buffer.add(i);
-                                                    return null;
-                                                }));
-        for (Recipe r : buffer) addRecipe(group, r);
+        recipes.getGroup(group)
+               .forEach(i -> getRecord().getGroup(group).stream().filter(j -> j.equals(i)).findAny().orElseGet(() -> {
+                   buffer.add(i);
+                   return null;
+               }));
+        for (Recipe r : buffer)
+            addRecipe(group, r);
     }
 
     public static File export(String group) {
@@ -132,16 +129,27 @@ public class Controller {
         amountClient = amount;
     }
 
+    public static boolean getDetectInv() {
+        return inventoryClient;
+    }
+
+    public static void setDetectInv(boolean b) {
+        inventoryClient = b;
+    }
 
     public static List<ILabel> getRecent() {
         return recentsClient.getRecords();
     }
 
-    public static void setRecent(ILabel label) {
-        recentsClient.push(label);
+    public static void setRecent(ILabel label, boolean replace) {
+        recentsClient.push(label, replace);
         writeToLocal();
     }
 
+    public static boolean hasDuplicate(Recipe r) {
+        return getRecord().hasDuplicate(r);
+    }
+
     public static void loadFromLocal() {
         //noinspection ResultOfMethodCallIgnored
         JecaConfig.dataDir.mkdirs();
@@ -151,13 +159,13 @@ public class Controller {
             recipesClient = nbt.hasKey(KEY_RECIPES) ? new Recipes(nbt.getCompoundTag(KEY_RECIPES)) : new Recipes();
             recentsClient = nbt.hasKey(KEY_RECENTS) ? new Recents(nbt.getTagList(KEY_RECENTS, 10)) : new Recents();
             amountClient = nbt.hasKey(KEY_AMOUNT) ? nbt.getString(KEY_AMOUNT) : "";
-            return;
+            inventoryClient = !nbt.hasKey(KEY_INVENTORY) || nbt.getBoolean(KEY_INVENTORY);
+        } else {
+            recipesClient = new Recipes();
+            recentsClient = new Recents();
+            amountClient = "";
+            inventoryClient = true;
         }
-        file = JecaConfig.defaultFile;
-        nbt = Utilities.Json.read(file);
-        recipesClient = nbt == null ? new Recipes() : new Recipes(nbt);
-        recentsClient = new Recents();
-        amountClient = "";
     }
 
     public static void writeToLocal() {
@@ -166,6 +174,7 @@ public class Controller {
         nbt.setTag(KEY_RECENTS, recentsClient.serialize());
         nbt.setTag(KEY_RECIPES, recipesClient.serialize());
         nbt.setString(KEY_AMOUNT, amountClient);
+        nbt.setBoolean(KEY_INVENTORY, inventoryClient);
         Utilities.Json.write(nbt, file);
     }
 }

src/main/java/me/towdium/jecalculation/data/label/ILabel.java

@@ -1,5 +1,6 @@
 package me.towdium.jecalculation.data.label;
 
+import codechicken.nei.recipe.IRecipeHandler;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.JustEnoughCalculation;
@@ -15,6 +16,7 @@ import me.towdium.jecalculation.gui.guis.pickers.PickerSimple;
 import me.towdium.jecalculation.polyfill.mc.client.renderer.GlStateManager;
 import me.towdium.jecalculation.utils.Utilities;
 import me.towdium.jecalculation.utils.Utilities.ReversedIterator;
+import me.towdium.jecalculation.utils.wrappers.Pair;
 import net.minecraft.init.Items;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
@@ -23,10 +25,7 @@ import net.minecraftforge.fluids.FluidStack;
 
 import javax.annotation.Nullable;
 import javax.annotation.ParametersAreNonnullByDefault;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Optional;
+import java.util.*;
 import java.util.function.BiPredicate;
 import java.util.function.Function;
 import java.util.function.Supplier;
@@ -56,7 +55,11 @@ public interface ILabel {
     ILabel decreaseAmount();
 
     static void initClient() {
-        CONVERTER.register(LOreDict::guess);
+        CONVERTER.register(LItemStack::suggest, Converter.Priority.SUGGEST);
+        CONVERTER.register(LOreDict::suggest, Converter.Priority.SUGGEST);
+        CONVERTER.register(LFluidStack::suggest, Converter.Priority.SUGGEST);
+        CONVERTER.register(LItemStack::fallback, Converter.Priority.FALLBACK);
+        CONVERTER.register(LOreDict::fallback, Converter.Priority.FALLBACK);
         EDITOR.register(PickerSimple.FluidStack::new, "fluid", new LFluidStack(1000, FluidRegistry.WATER));
         EDITOR.register(PickerSimple.OreDict::new, "ore", new LOreDict("ingotIron"));
         EDITOR.register(PickerPlaceholder::new, "placeholder", new LPlaceholder("example", 1, true));
@@ -64,7 +67,10 @@ public interface ILabel {
         MERGER.register("itemStack", "itemStack", Impl.form(LItemStack.class, LItemStack.class, LItemStack::merge));
         MERGER.register("oreDict", "oreDict", Impl.form(LOreDict.class, LOreDict.class, LOreDict::mergeSame));
         MERGER.register("oreDict", "itemStack", Impl.form(LOreDict.class, LItemStack.class, LOreDict::mergeFuzzy));
-        MERGER.register("fluidStack", "fluidStack", Impl.form(LFluidStack.class, LFluidStack.class, LFluidStack::merge));
+        MERGER.register("fluidStack", "fluidStack",
+                        Impl.form(LFluidStack.class, LFluidStack.class, LFluidStack::merge));
+        MERGER.register("placeholder", "placeholder",
+                        Impl.form(LPlaceholder.class, LPlaceholder.class, LPlaceholder::merge));
     }
 
     long getAmount();
@@ -137,7 +143,8 @@ public interface ILabel {
          */
         public Optional<ILabel> merge(ILabel a, ILabel b) {
             MergerFunction mf = functions.get(a.getIdentifier(), b.getIdentifier());
-            if (mf == null) return Optional.empty();
+            if (mf == null)
+                return Optional.empty();
             return Optional.ofNullable(mf.merge(a, b));
         }
 
@@ -190,11 +197,13 @@ public interface ILabel {
         public ILabel deserialize(NBTTagCompound nbt) {
             String s = nbt.getString(KEY_IDENTIFIER);
             Function<NBTTagCompound, ILabel> func = idToData.get(s);
-            if (func == null) JustEnoughCalculation.logger.warn("Unrecognized identifier \"" + s + "\", abort");
-            else try {
-                return func.apply(nbt.getCompoundTag(KEY_CONTENT));
-            } catch (SerializationException ignored) {
-            }
+            if (func == null)
+                JustEnoughCalculation.logger.warn("Unrecognized identifier \"" + s + "\", abort");
+            else
+                try {
+                    return func.apply(nbt.getCompoundTag(KEY_CONTENT));
+                } catch (SerializationException ignored) {
+                }
             return EMPTY;
         }
 
@@ -219,7 +228,15 @@ public interface ILabel {
      * It can also convert ItemStack or FluidStack to ILabel
      */
     class Converter {
-        ArrayList<Function<List<ILabel>, List<ILabel>>> handlers = new ArrayList<>();
+        static EnumMap<Priority, ArrayList<ConverterFunction>> handlers;
+
+        public enum Priority {SUGGEST, FALLBACK}
+
+        static {
+            handlers = new EnumMap<>(Priority.class);
+            handlers.put(Priority.SUGGEST, new ArrayList<>());
+            handlers.put(Priority.FALLBACK, new ArrayList<>());
+        }
 
         public static ILabel from(@Nullable Object o) {
             if (o == null)
@@ -232,20 +249,37 @@ public interface ILabel {
                 throw new RuntimeException("Unrecognized ingredient type: " + o.getClass());
         }
 
-        public void register(Function<List<ILabel>, List<ILabel>> handler) {
-            handlers.add(handler);
+        public void register(ConverterFunction handler, Priority priority) {
+            handlers.get(priority).add(handler);
         }
 
         // get most possible guess from labels
-        public ILabel first(List<ILabel> labels) {
-            List<ILabel> guess = guess(labels);
+        public ILabel first(List<ILabel> labels, @Nullable IRecipeHandler context) {
+            List<ILabel> guess = guess(labels, context).one;
             return guess.isEmpty() ? labels.get(0) : guess.get(0);
         }
 
+        public ILabel first(List<ILabel> labels) {
+            return first(labels, null);
+        }
+
         // to test if the labels can be converted to other labels (like oreDict)
-        public List<ILabel> guess(List<ILabel> labels) {
-            return new ReversedIterator<>(handlers).stream().flatMap(h -> h.apply(labels).stream())
-                                                   .collect(Collectors.toList());
+        public Pair<List<ILabel>, List<ILabel>> guess(List<ILabel> labels) {
+            return guess(labels, null);
+        }
+
+        public Pair<List<ILabel>, List<ILabel>> guess(List<ILabel> labels, @Nullable IRecipeHandler context) {
+            List<ILabel> ret = new ArrayList<>();
+            List<ILabel> suggest = new ReversedIterator<>(handlers.get(Priority.SUGGEST)).stream().flatMap(
+                    h -> h.convert(labels, context).stream()).collect(Collectors.toList());
+            List<ILabel> fallback = new ReversedIterator<>(handlers.get(Priority.FALLBACK)).stream().flatMap(
+                    h -> h.convert(labels, context).stream()).collect(Collectors.toList());
+            return new Pair<>(suggest, fallback);
+        }
+
+        @FunctionalInterface
+        public interface ConverterFunction {
+            List<ILabel> convert(List<ILabel> a, @Nullable IRecipeHandler context);
         }
     }
 
@@ -440,17 +474,22 @@ public interface ILabel {
                     long amountD = d.isPercent() ? d.getAmount() : Math.multiplyExact(d.getAmount(), 100);
                     long amount = Math.addExact(amountC, amountD);
                     long amountI = (amount > 0 ? Math.addExact(amount, 99) : Math.subtractExact(amount, 99)) / 100;
-                    if (amount == 0) return EMPTY;
-                    else if (amount > 0) return d.copy().setAmount(d.isPercent() ? amount : amountI);
-                    else return c.copy().setAmount(c.isPercent() ? amount : amountI);
-                } else return null;
+                    if (amount == 0)
+                        return EMPTY;
+                    else if (amount > 0)
+                        return d.copy().setAmount(d.isPercent() ? amount : amountI);
+                    else
+                        return c.copy().setAmount(c.isPercent() ? amount : amountI);
+                } else
+                    return null;
             };
         }
 
         @Override
         public ILabel multiply(float i) {
             float amount = i * getAmount();
-            if (amount > Long.MAX_VALUE) throw new ArithmeticException("Multiply overflow");
+            if (amount > Long.MAX_VALUE)
+                throw new ArithmeticException("Multiply overflow");
             setAmount((long) amount);
             return this;
         }
@@ -460,8 +499,7 @@ public interface ILabel {
         @SideOnly(Side.CLIENT)
         public void getToolTip(List<String> existing, boolean detailed) {
             if (detailed)
-                existing.add(
-                        FORMAT_GREY + Utilities.I18n.get("label.common.tooltip.amount", getAmountString(false)));
+                existing.add(FORMAT_GREY + Utilities.I18n.get("label.common.amount", getAmountString(false)));
         }
 
         @Override
@@ -481,7 +519,8 @@ public interface ILabel {
         public NBTTagCompound toNbt() {
             NBTTagCompound nbt = new NBTTagCompound();
             nbt.setLong(KEY_AMOUNT, amount);
-            if (percent) nbt.setBoolean(KEY_PERCENT, true);
+            if (percent)
+                nbt.setBoolean(KEY_PERCENT, true);
             return nbt;
         }
 

src/main/java/me/towdium/jecalculation/data/label/labels/LFluidStack.java

@@ -1,5 +1,6 @@
 package me.towdium.jecalculation.data.label.labels;
 
+import codechicken.nei.recipe.IRecipeHandler;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.gui.JecaGui;
@@ -13,6 +14,8 @@ import net.minecraftforge.fluids.FluidStack;
 
 import javax.annotation.Nullable;
 import javax.annotation.ParametersAreNonnullByDefault;
+import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.Objects;
 
@@ -122,7 +125,7 @@ public class LFluidStack extends ILabel.Impl {
     @SideOnly(Side.CLIENT)
     public void getToolTip(List<String> existing, boolean detailed) {
         if (detailed) existing.add(FORMAT_GREY +
-                                   Utilities.I18n.get("label.common.tooltip.amount", Long.toString(getAmount())) + "mB");
+                                   Utilities.I18n.get("label.common.amount", Long.toString(getAmount())) + "mB");
         existing.add(FORMAT_BLUE + FORMAT_ITALIC + Utilities.getModName(fluid));
     }
 
@@ -136,7 +139,11 @@ public class LFluidStack extends ILabel.Impl {
 
     @Override
     public int hashCode() {
-        return fluid.getUnlocalizedName().hashCode() ^ (int) amount ^ (nbt == null ? 0 : nbt.hashCode());
+        return super.hashCode() ^ fluid.getUnlocalizedName().hashCode() ^ (nbt == null ? 0 : nbt.hashCode());
+    }
+
+    public static List<ILabel> suggest(List<ILabel> iss, @Nullable IRecipeHandler rl) {
+        return new ArrayList<>();
     }
 
     public static boolean merge(ILabel a, ILabel b) {

src/main/java/me/towdium/jecalculation/data/label/labels/LItemStack.java

@@ -1,5 +1,6 @@
 package me.towdium.jecalculation.data.label.labels;
 
+import codechicken.nei.recipe.IRecipeHandler;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.data.label.ILabel;
@@ -12,6 +13,8 @@ import net.minecraft.nbt.NBTTagCompound;
 
 import javax.annotation.Nullable;
 import javax.annotation.ParametersAreNonnullByDefault;
+import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.Objects;
 
@@ -77,13 +80,13 @@ public class LItemStack extends ILabel.Impl {
                       boolean fNbt) {
         Objects.requireNonNull(item);
         this.item = item;
-        this.meta = meta;
-        this.nbt = nbt;
+        this.meta = fMeta ? 0 : meta;
+        this.nbt = fNbt ? null : nbt;
         this.fMeta = fMeta;
         this.fCap = fCap;
         this.fNbt = fNbt;
-        temp = new ItemStack(item, 1, meta);
-        temp.setTagCompound(nbt);
+        temp = new ItemStack(item, 1, this.meta);
+        temp.setTagCompound(this.nbt);
     }
 
 
@@ -103,18 +106,60 @@ public class LItemStack extends ILabel.Impl {
         return false;
     }
 
-    public ILabel setFMeta(boolean f) {
+    public static List<ILabel> suggest(List<ILabel> iss, @Nullable IRecipeHandler rl) {
+        if (iss.size() == 0) return new ArrayList<>();
+        for (ILabel i : iss) if (!(i instanceof LItemStack)) return new ArrayList<>();
+        LItemStack lis = (LItemStack) iss.get(0);
+        boolean fMeta = false;
+        boolean fNbt = false;
+        boolean fCap = false;
+        for (ILabel i : iss) {
+            LItemStack ii = (LItemStack) i;
+            if (ii.item != lis.item) return new ArrayList<>();
+            if (ii.meta != lis.meta || ii.fMeta) fMeta = true;
+            if (!Objects.equals(ii.nbt, lis.nbt)) fNbt = true;
+        }
+        if (fMeta || fNbt || fCap) return Collections.singletonList(
+                lis.copy().setFCap(fCap).setFMeta(fMeta).setFNbt(fNbt));
+        else return new ArrayList<>();
+    }
+
+
+    public static List<ILabel> fallback(List<ILabel> iss, @Nullable IRecipeHandler rl) {
+        List<ILabel> ret = new ArrayList<>();
+        if (iss.size() == 1) {
+            ILabel label = iss.get(0);
+            if (!(label instanceof LItemStack)) return ret;
+            LItemStack lis = (LItemStack) label;
+            if (lis.fCap || lis.fNbt || lis.fMeta) return new ArrayList<>();
+            ret.add(lis.copy().setFMeta(true));
+            ret.add(lis.copy().setFNbt(true));
+            ret.add(lis.copy().setFCap(true));
+            ret.add(lis.copy().setFMeta(true).setFNbt(true).setFCap(true));
+        }
+        return ret;
+    }
+
+    public LItemStack setFMeta(boolean f) {
         fMeta = f;
+        if (f) meta = 0;
+        temp = new ItemStack(item, 1, meta);
+        temp.setTagCompound(nbt);
         return this;
     }
 
-    public ILabel setFNbt(boolean f) {
+    public LItemStack setFNbt(boolean f) {
         fNbt = f;
+        if (f) nbt = null;
+        temp = new ItemStack(item, 1, meta);
+        temp.setTagCompound(nbt);
         return this;
     }
 
-    public ILabel setFCap(boolean f) {
+    public LItemStack setFCap(boolean f) {
         fCap = f;
+        temp = new ItemStack(item, 1, meta);
+        temp.setTagCompound(nbt);
         return this;
     }
 
@@ -126,6 +171,9 @@ public class LItemStack extends ILabel.Impl {
     @SideOnly(Side.CLIENT)
     public void getToolTip(List<String> existing, boolean detailed) {
         super.getToolTip(existing, detailed);
+        if (fMeta) existing.add(FORMAT_GREY + Utilities.I18n.get("label.item_stack.fuzzy_meta"));
+        if (fNbt) existing.add(FORMAT_GREY + Utilities.I18n.get("label.item_stack.fuzzy_nbt"));
+        if (fCap) existing.add(FORMAT_GREY + Utilities.I18n.get("label.item_stack.fuzzy_cap"));
         existing.add(FORMAT_BLUE + FORMAT_ITALIC + Utilities.getModName(item));
     }
 

src/main/java/me/towdium/jecalculation/data/label/labels/LOreDict.java

@@ -1,5 +1,6 @@
 package me.towdium.jecalculation.data.label.labels;
 
+import codechicken.nei.recipe.IRecipeHandler;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.JustEnoughCalculation;
@@ -9,16 +10,19 @@ import me.towdium.jecalculation.gui.Resource;
 import me.towdium.jecalculation.polyfill.mc.util.NonNullList;
 import me.towdium.jecalculation.utils.ItemStackHelper;
 import me.towdium.jecalculation.utils.Utilities;
+import me.towdium.jecalculation.utils.wrappers.Wrapper;
 import net.minecraft.creativetab.CreativeTabs;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraftforge.oredict.OreDictionary;
 
 import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 import javax.annotation.ParametersAreNonnullByDefault;
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
+import java.util.function.BiPredicate;
 import java.util.stream.Collectors;
 
 /**
@@ -53,10 +57,6 @@ public class LOreDict extends ILabel.Impl {
         name = nbt.getString(KEY_NAME);
     }
 
-    public boolean isEmpty() {
-        return OreDictionary.getOres(name).isEmpty();
-    }
-
     @Override
     @Nonnull
     public ItemStack getRepresentation() {
@@ -97,53 +97,44 @@ public class LOreDict extends ILabel.Impl {
         return false;
     }
 
-    public static List<ILabel> guess(List<ILabel> iss) {
+    public static List<ILabel> suggest(List<ILabel> iss, @Nullable IRecipeHandler rl) {
         ILabel l = iss.get(0);
+        if (!(l instanceof LItemStack)) return new ArrayList<>();
+        LItemStack lis = (LItemStack) l;
         HashSet<Integer> ids = new HashSet<>();
-        long amount = l.getAmount();
-        for (int i : OreDictionary.getOreIDs(((LItemStack) l).getRep()))
-            if (check(i, iss))
+        long amount = lis.getAmount();
+        for (int i : OreDictionary.getOreIDs(lis.getRep()))
+            if (check(i, iss, true)) ids.add(i);
+        return ids.stream().map(i -> new LOreDict(OreDictionary.getOreName(i), amount))
+                  .collect(Collectors.toList());
+    }
+
+    public static List<ILabel> fallback(List<ILabel> iss, @Nullable IRecipeHandler rl) {
+        ILabel l = iss.get(0);
+        if (!(l instanceof LItemStack)) return new ArrayList<>();
+        LItemStack lis = (LItemStack) l;
+        HashSet<Integer> ids = new HashSet<>();
+        long amount = lis.getAmount();
+        for (int i : OreDictionary.getOreIDs(lis.getRep()))
+            if (check(i, iss, false))
                 ids.add(i);
         return ids.stream().map(i -> new LOreDict(OreDictionary.getOreName(i), amount)).collect(Collectors.toList());
     }
 
     // check labels in the list suitable for the ore id
-    private static boolean check(int id, List<ILabel> labels) {
+    private static boolean check(int id, List<ILabel> labels, boolean biDir) {
         ArrayList<ItemStack> ores = OreDictionary.getOres(OreDictionary.getOreName(id));
-        if (labels.size() == 1 && ores.size() == 1 &&
-            (ores.get(0).getItemDamage() == OreDictionary.WILDCARD_VALUE || !MODE_FORCE))
+        if (labels.size() == 1 && ores.size() == 1 && biDir && !MODE_FORCE)
             return false;
 
-        boolean acceptable = true;
-        for (ItemStack ore : ores) {
-            boolean found = false;
-            for (ILabel label : labels) {
-                if (label instanceof LItemStack &&
-                    OreDictionary.itemMatches(ore, ((LItemStack) label).getRep(), false)) {
-                    found = true;
-                    break;
-                }
-            }
-            if (!found) {
-                acceptable = false;
-                break;
-            }
-        }
-        for (ILabel label : labels) {
-            boolean found = false;
-            for (ItemStack ore : ores) {
-                if (label instanceof LItemStack &&
-                    OreDictionary.itemMatches(ore, ((LItemStack) label).getRep(), false)) {
-                    found = true;
-                    break;
-                }
-            }
-            if (!found) {
-                acceptable = false;
-                break;
-            }
-        }
-        return acceptable;
+        Wrapper<Boolean> acceptable = new Wrapper<>(true);
+        BiPredicate<ILabel, ItemStack> match = (l, o) -> l instanceof LItemStack
+                                                         && OreDictionary.itemMatches(o, ((LItemStack) l).getRep(), false);
+        if (biDir) ores.stream().filter(ore -> labels.stream().noneMatch(label -> match.test(label, ore)))
+            .findAny().ifPresent(i -> acceptable.value = false);
+        labels.stream().filter(label -> ores.stream().noneMatch(ore -> match.test(label, ore)))
+              .findAny().ifPresent(i -> acceptable.value = false);
+        return acceptable.value;
     }
 
     @Override
@@ -164,21 +155,7 @@ public class LOreDict extends ILabel.Impl {
     @Override
     @SideOnly(Side.CLIENT)
     public void drawLabel(JecaGui gui) {
-        NonNullList<ItemStack> list = NonNullList.create();
-        OreDictionary.getOres(name).forEach(is -> {
-            if (is.getItemDamage() == OreDictionary.WILDCARD_VALUE) {
-                is.getItem().getSubItems(is.getItem(), CreativeTabs.tabAllSearch, list);
-            } else
-                list.add(is);
-        });
-        if (list.isEmpty())
-            return;
-        long index = System.currentTimeMillis() / 1500;
-        //GlStateManager.pushMatrix();
-        //GlStateManager.translate(1, 1, 0);
-        //GlStateManager.scale(14f / 16, 14f / 16, 1);
-        gui.drawItemStack(0, 0, list.get((int) (index % list.size())), false);
-        //GlStateManager.popMatrix();
+        gui.drawItemStack(0, 0, getRepresentation(), false);
         gui.drawResource(Resource.LBL_FRAME, 0, 0);
     }
 

src/main/java/me/towdium/jecalculation/data/label/labels/LPlaceholder.java

@@ -39,7 +39,7 @@ public class LPlaceholder extends ILabel.Impl {
     public LPlaceholder(String name, long amount, boolean silent) {
         super(amount, false);
         this.name = name;
-        if (!silent) getRecord().push(new LPlaceholder(name, 1, true));
+        if (!silent) getRecord().push(new LPlaceholder(name, 1, true), false);
     }
 
     public LPlaceholder(LPlaceholder label) {
@@ -111,4 +111,12 @@ public class LPlaceholder extends ILabel.Impl {
         super.getToolTip(existing, detailed);
         existing.add(FORMAT_BLUE + FORMAT_ITALIC + JustEnoughCalculation.Reference.MODNAME);
     }
+
+    public static boolean merge(ILabel a, ILabel b) {
+        if (a instanceof LPlaceholder && b instanceof LPlaceholder) {
+            LPlaceholder lpA = (LPlaceholder) a;
+            LPlaceholder lpB = (LPlaceholder) b;
+            return lpA.name.equals(lpB.name);
+        } else return false;
+    }
 }

src/main/java/me/towdium/jecalculation/data/structure/CostList.java

@@ -158,7 +158,7 @@ public class CostList {
                 if (label.getAmount() >= 0) continue;
                 while (iterator.hasNext()) {
                     Recipe r = iterator.next();
-                    if (r.matches(label)) return new Pair<>(r, r.multiplier(label));
+                    if (r.matches(label).isPresent()) return new Pair<>(r, r.multiplier(label));
                 }
                 iterator = Controller.recipeIterator();
             }
@@ -187,7 +187,7 @@ public class CostList {
                                       .collect(Collectors.toList());
         }
 
-        public List<ILabel> getOutputs(List<ILabel> ignore) {
+        public List<ILabel> getOutputs(List<ILabel> ignore) {  // TODO check logic
             return getCurrent().labels.stream()
                                       .map(i -> i.copy().multiply(-1))
                                       .map(i -> ignore.stream().flatMap(j -> stream(ILabel.MERGER.merge(i, j))).findFirst().orElse(i))

src/main/java/me/towdium/jecalculation/data/structure/Recents.java

@@ -20,14 +20,14 @@ public class Recents {
                                        .filter(n -> n instanceof NBTTagCompound)
                                        .map(n -> ILabel.SERIALIZER.deserialize((NBTTagCompound) n))
                                        .collect(Collectors.toList());
-        new Utilities.ReversedIterator<>(ls).forEachRemaining(l -> record.push(l));
+        new Utilities.ReversedIterator<>(ls).forEachRemaining(l -> record.push(l, false));
     }
 
     public Recents() {
     }
 
-    public void push(ILabel label) {
-        record.push(label);
+    public void push(ILabel label, boolean replace) {
+        record.push(label, replace);
     }
 
     public ILabel getLatest() {

src/main/java/me/towdium/jecalculation/data/structure/Recipe.java

@@ -9,15 +9,13 @@ import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.nbt.NBTTagList;
 
 import javax.annotation.ParametersAreNonnullByDefault;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Objects;
+import java.util.*;
 import java.util.function.BiFunction;
 import java.util.function.BiPredicate;
 import java.util.function.Consumer;
 import java.util.function.Function;
 import java.util.stream.Collectors;
+import java.util.stream.Stream;
 import java.util.stream.StreamSupport;
 
 /**
@@ -33,7 +31,6 @@ public class Recipe {
     ILabel[] input;
     ILabel[] catalyst;
     ILabel[] output;
-    int hashcode;
 
     public Recipe(NBTTagCompound nbt) {
         this(readNbtList(nbt.getTagList(KEY_INPUT, 10)),
@@ -53,19 +50,15 @@ public class Recipe {
             for (int j = ls.length; j < i; j++) ret[j] = ILabel.EMPTY;
             return ret;
         };
-        this.input = convert.apply(input, 16);
-        this.catalyst = convert.apply(catalyst, 8);
-        this.output = convert.apply(output, 8);
-
-        Wrapper<Integer> hash = new Wrapper<>(0);
-        Consumer<ILabel[]> hasher = (ls) -> Arrays.stream(ls)
-                                                  .filter(Objects::nonNull).forEach(i -> hash.value ^= i.hashCode());
-        hasher.accept(input);
-        hasher.accept(catalyst);
-        hasher.accept(output);
-        hashcode = hash.value;
+        this.input = convert.apply(input, 14);
+        this.catalyst = convert.apply(catalyst, 7);
+        this.output = convert.apply(output, 7);
+        Stream.of(input, output).forEach(i -> Arrays.stream(i).filter(j -> j != ILabel.EMPTY).findAny()
+                                                    .orElseThrow(() -> new IllegalArgumentException("Invalid recipe")));
     }
 
+
+
     static private List<ILabel> readNbtList(NBTTagList list) {
         return StreamSupport.stream(NBTHelper.spliterator(list), false)
                             .filter(n -> n instanceof NBTTagCompound)
@@ -75,12 +68,18 @@ public class Recipe {
 
     @Override
     public int hashCode() {
-        return hashcode;
+        Wrapper<Integer> hash = new Wrapper<>(0);
+        Consumer<ILabel[]> hasher = (ls) -> Arrays.stream(ls)
+                                                  .filter(Objects::nonNull).forEach(i -> hash.value ^= i.hashCode());
+        hasher.accept(input);
+        hasher.accept(catalyst);
+        hasher.accept(output);
+        return hash.value;
     }
 
     @Override
     public boolean equals(Object obj) {
-        if (obj == null || hashcode != obj.hashCode() || !(obj instanceof Recipe)) return false;
+        if (!(obj instanceof Recipe)) return false;
         Recipe r = (Recipe) obj;
         BiPredicate<ILabel[], ILabel[]> p = (i, j) -> {
             if (i.length != j.length) return false;
@@ -133,8 +132,8 @@ public class Recipe {
         return ret;
     }
 
-    public boolean matches(ILabel label) {
-        return Arrays.stream(output).anyMatch(i -> ILabel.MERGER.merge(label, i).isPresent());
+    public Optional<ILabel> matches(ILabel label) {
+        return Arrays.stream(output).filter(i -> ILabel.MERGER.merge(label, i).isPresent()).findAny();
     }
 
     public long multiplier(ILabel label) {

src/main/java/me/towdium/jecalculation/data/structure/Recipes.java

@@ -1,7 +1,10 @@
 package me.towdium.jecalculation.data.structure;
 
+import me.towdium.jecalculation.JecaConfig;
+import me.towdium.jecalculation.JustEnoughCalculation;
 import me.towdium.jecalculation.data.label.ILabel;
 import me.towdium.jecalculation.polyfill.NBTHelper;
+import me.towdium.jecalculation.utils.Utilities;
 import me.towdium.jecalculation.utils.wrappers.Pair;
 import me.towdium.jecalculation.utils.wrappers.Trio;
 import net.minecraft.nbt.NBTTagCompound;
@@ -9,6 +12,7 @@ import net.minecraft.nbt.NBTTagList;
 
 import javax.annotation.Nullable;
 import javax.annotation.ParametersAreNonnullByDefault;
+import java.io.File;
 import java.util.*;
 import java.util.function.BiConsumer;
 import java.util.stream.Collectors;
@@ -19,32 +23,41 @@ import java.util.stream.StreamSupport;
 @ParametersAreNonnullByDefault
 public class Recipes {
     LinkedHashMap<String, List<Recipe>> records = new LinkedHashMap<>();
+    HashSet<Recipe> cache = new HashSet<>();
 
     public Recipes() {
+        File file = JecaConfig.defaultFile;
+        NBTTagCompound nbt = Utilities.Json.read(file);
+        if (nbt == null) JustEnoughCalculation.logger.info("Failed to load default records at " + file + ".");
+        else {
+            JustEnoughCalculation.logger.info("Loading default records at " + file + ".");
+            deserialize(nbt);
+        }
     }
 
     public Recipes(NBTTagCompound nbt) {
         deserialize(nbt);
     }
 
-    public void deserialize(NBTTagCompound nbt) {
+    protected void deserialize(NBTTagCompound nbt) {
         Set<String> keySet = (Set<String>) nbt.func_150296_c();
         keySet.stream().sorted().forEach(i -> {
             NBTTagList group = nbt.getTagList(i, 10);
             StreamSupport.stream(NBTHelper.spliterator(group), false)
                          .filter(r -> r instanceof  NBTTagCompound)
-                         .forEach(r -> add(i, new Recipe((NBTTagCompound) r)));
+                         .forEach(r -> {
+                             try {
+                                 add(i, new Recipe((NBTTagCompound) r));
+                             } catch (IllegalArgumentException e) {
+                                 JustEnoughCalculation.logger.warn("Invalid recipe record :" + r);
+                             }
+                         });
         });
     }
 
     public void add(String group, Recipe recipe) {
-        if (records.containsKey(group)) {
-            records.get(group).add(recipe);
-        } else {
-            ArrayList<Recipe> l = new ArrayList<>();
-            l.add(recipe);
-            records.put(group, l);
-        }
+        records.computeIfAbsent(group, k -> new ArrayList<>()).add(recipe);
+        cache.add(recipe);
     }
 
     public void modify(String group, int index, @Nullable Recipe recipe) {
@@ -54,7 +67,9 @@ public class Recipes {
     }
 
     public void set(String group, int index, Recipe recipe) {
-        records.get(group).set(index, recipe);
+        Recipe r = records.get(group).set(index, recipe);
+        cache.remove(r);
+        cache.add(recipe);
     }
 
     public int size() {
@@ -67,7 +82,7 @@ public class Recipes {
 
     public void remove(String group, int index) {
         List<Recipe> l = records.get(group);
-        l.remove(index);
+        cache.remove(l.remove(index));
         if (l.isEmpty()) records.remove(group);
     }
 
@@ -87,6 +102,12 @@ public class Recipes {
         records.forEach(consumer);
     }
 
+    /**
+     * Do not modify return value!
+     *
+     * @param group Name of group to get
+     * @return List of Recipes in group
+     */
     public List<Recipe> getGroup(String group) {
         return records.get(group);
     }
@@ -132,5 +153,13 @@ public class Recipes {
             while (j == null || !j.hasNext()) if (i.hasNext()) j = i.next().getValue().iterator();
             return j.next();
         }
+
+        public Stream<Recipe> stream() {
+            return StreamSupport.stream(Spliterators.spliteratorUnknownSize(this, Spliterator.ORDERED), false);
+        }
+    }
+
+    public boolean hasDuplicate(Recipe r) {
+        return cache.contains(r);
     }
 }

src/main/java/me/towdium/jecalculation/gui/JecaGui.java

@@ -57,6 +57,12 @@ public class JecaGui extends GuiContainer {
             ((JecContainer) inventorySlots).setGui(this);
     }
 
+    @Override
+    public void initGui() {
+        this.guiLeft = (this.width - this.xSize) / 2;
+        this.guiTop = (this.height - this.ySize) / 2;
+    }
+
     public static boolean mouseIn(int xPos, int yPos, int xSize, int ySize, int xMouse, int yMouse) {
         return xMouse > xPos && yMouse > yPos && xMouse <= xPos + xSize && yMouse <= yPos + ySize;
     }
@@ -173,22 +179,13 @@ public class JecaGui extends GuiContainer {
         int yMouse = this.height - Mouse.getEventY() * this.height / this.mc.displayHeight - 1;
         int button = Mouse.getEventButton();
         if (Mouse.getEventButtonState()) {
-            if (button == 0) {
-                if (hand == ILabel.EMPTY) {
-                    ILabel e = NEIPlugin.getLabelUnderMouse();
-                    if (e != ILabel.EMPTY) {
-                        hand = e;
-                        return true;
-                    }
-                } else {
-                    if (!mouseIn(guiLeft, guiTop, width, height, xMouse, yMouse)) {
-                        hand = ILabel.EMPTY;
-                        return true;
-                    }
-                }
-            } else if (button == 1) {
-                if (hand != ILabel.EMPTY) {
-                    hand = ILabel.EMPTY;
+            if (hand != ILabel.EMPTY) {
+                hand = ILabel.EMPTY;
+                return true;
+            } else {
+                ILabel e = NEIPlugin.getLabelUnderMouse();
+                if (e != ILabel.EMPTY) {
+                    hand = e;
                     return true;
                 }
             }
@@ -295,7 +292,7 @@ public class JecaGui extends GuiContainer {
         boolean unicode = fontRendererObj.getUnicodeFlag();
         if (f.half) fontRendererObj.setUnicodeFlag(false);
         GlStateManager.pushMatrix();
-        GlStateManager.translate(xPos, yPos, 0);
+        GlStateManager.translate(unicode && f.half ? xPos - 5 : xPos, yPos, 0);
         if (f.half) GlStateManager.scale(0.5, 0.5, 1);
         r.run();
         GlStateManager.popMatrix();

src/main/java/me/towdium/jecalculation/gui/Resource.java

@@ -26,6 +26,7 @@ public class Resource {
     public static final Resource BTN_SEARCH_F = getIcon(2, 0);
     public static final Resource BTN_SAVE_N = getIcon(3, 1);
     public static final Resource BTN_SAVE_F = getIcon(3, 0);
+    public static final Resource BTN_SAVE_D = getIcon(3, 2);
     public static final Resource BTN_COPY_N = getIcon(4, 1);
     public static final Resource BTN_COPY_F = getIcon(4, 0);
     public static final Resource BTN_COPY_D = getIcon(4, 2);
@@ -52,63 +53,78 @@ public class Resource {
     public static final Resource BTN_LIST_N = getIcon(12, 1);
     public static final Resource BTN_LIST_F = getIcon(12, 0);
     public static final Resource BTN_LIST_D = getIcon(12, 2);
-    public static final Resource BTN_META_N_N = getIcon(14, 0);
-    public static final Resource BTN_META_N_F = getIcon(13, 0);
-    public static final Resource BTN_META_F_N = getIcon(16, 0);
-    public static final Resource BTN_META_F_F = getIcon(15, 0);
-    public static final Resource BTN_META_D = getIcon(17, 0);
-    public static final Resource BTN_NBT_N_N = getIcon(14, 1);
-    public static final Resource BTN_NBT_N_F = getIcon(13, 1);
-    public static final Resource BTN_NBT_F_N = getIcon(16, 1);
-    public static final Resource BTN_NBT_F_F = getIcon(15, 1);
-    public static final Resource BTN_NBT_D = getIcon(17, 1);
-    public static final Resource BTN_CAP_N_N = getIcon(14, 2);
-    public static final Resource BTN_CAP_N_F = getIcon(13, 2);
-    public static final Resource BTN_CAP_F_N = getIcon(16, 2);
-    public static final Resource BTN_CAP_F_F = getIcon(15, 2);
-    public static final Resource BTN_CAP_D = getIcon(17, 2);
-    public static final Resource WGT_BUTTON_N = new Resource(40, 232, 20, 20);
-    public static final Resource WGT_BUTTON_F = new Resource(60, 232, 20, 20);
-    public static final Resource WGT_BUTTON_D = new Resource(80, 232, 20, 20);
-    public static final Resource WGT_BUTTON_S_N = new Resource(0, 212, 20, 20);
-    public static final Resource WGT_BUTTON_S_F = new Resource(20, 212, 20, 20);
-    public static final Resource WGT_BUTTON_S_D = new Resource(40, 212, 20, 20);
-    public static final Resource WGT_SLOT = new Resource(20, 232, 20, 20);
-    public static final Resource WGT_LINE = new Resource(0, 252, 163, 4);
-    public static final Resource WGT_PANEL_F = new Resource(0, 232, 20, 20);
-    public static final Resource WGT_PAGER_FN = new Resource(100, 232, 20, 20);
-    public static final Resource WGT_PAGER_F0 = new Resource(120, 232, 20, 20);
-    public static final Resource WGT_PANEL_N = new Resource(140, 232, 20, 20);
-    public static final Resource WGT_ARR_L_F = new Resource(160, 232, 7, 9);
-    public static final Resource WGT_ARR_L_N = new Resource(167, 232, 7, 9);
-    public static final Resource WGT_ARR_L_D = new Resource(174, 232, 7, 9);
-    public static final Resource WGT_ARR_R_F = new Resource(160, 242, 7, 9);
-    public static final Resource WGT_ARR_R_N = new Resource(167, 242, 7, 9);
-    public static final Resource WGT_ARR_R_D = new Resource(174, 242, 7, 9);
-    public static final Resource WGT_SCROLL = new Resource(181, 232, 12, 15);
-    public static final Resource WGT_HELP_F = new Resource(193, 232, 20, 20);
-    public static final Resource WGT_HELP_N = new Resource(213, 232, 20, 20);
-    public static final Resource WGT_HELP_B = new Resource(233, 232, 20, 20);
-    public static final Resource ICN_RECENT_N = getIcon(0, 4);
-    public static final Resource ICN_RECENT_F = getIcon(0, 3);
-    public static final Resource ICN_INPUT_N = getIcon(1, 4);
-    public static final Resource ICN_INPUT_F = getIcon(1, 3);
-    public static final Resource ICN_OUTPUT_N = getIcon(2, 4);
-    public static final Resource ICN_OUTPUT_F = getIcon(2, 3);
-    public static final Resource ICN_CATALYST_N = getIcon(3, 4);
-    public static final Resource ICN_CATALYST_F = getIcon(3, 3);
-    public static final Resource ICN_LIST_N = getIcon(4, 4);
-    public static final Resource ICN_LIST_F = getIcon(4, 3);
-    public static final Resource ICN_LABEL_N = getIcon(5, 4);
-    public static final Resource ICN_LABEL_F = getIcon(5, 3);
-    public static final Resource ICN_HELP_N = getIcon(6, 4);
-    public static final Resource ICN_HELP_F = getIcon(6, 3);
-    public static final Resource ICN_STACK_N = getIcon(7, 4);
-    public static final Resource ICN_STACK_F = getIcon(7, 3);
-    public static final Resource ICN_TEXT_N = getIcon(8, 4);
-    public static final Resource ICN_TEXT_F = getIcon(8, 3);
-    public static final Resource ICN_MULTI_N = getIcon(9, 4);
-    public static final Resource ICN_MULTI_F = getIcon(9, 3);
+    public static final Resource BTN_IMPORT_N = getIcon(13, 1);
+    public static final Resource BTN_IMPORT_F = getIcon(13, 0);
+    public static final Resource BTN_IMPORT_D = getIcon(13, 2);
+    public static final Resource BTN_EXPORT_N_N = getIcon(14, 1);
+    public static final Resource BTN_EXPORT_N_F = getIcon(14, 0);
+    public static final Resource BTN_EXPORT_N_D = getIcon(14, 2);
+    public static final Resource BTN_EXPORT_1_N = getIcon(15, 1);
+    public static final Resource BTN_EXPORT_1_F = getIcon(15, 0);
+    public static final Resource BTN_EXPORT_1_D = getIcon(15, 2);
+    public static final Resource BTN_INV_E_N = getIcon(16, 1);
+    public static final Resource BTN_INV_E_F = getIcon(16, 0);
+    public static final Resource BTN_INV_D_N = getIcon(17, 1);
+    public static final Resource BTN_INV_D_F = getIcon(17, 0);
+    public static final Resource BTN_CAP_N_N = getIcon(0, 4);
+    public static final Resource BTN_CAP_N_F = getIcon(0, 3);
+    public static final Resource BTN_CAP_F_N = getIcon(1, 4);
+    public static final Resource BTN_CAP_F_F = getIcon(1, 3);
+    public static final Resource BTN_CAP_D = getIcon(0, 5);
+    public static final Resource BTN_META_N_N = getIcon(2, 4);
+    public static final Resource BTN_META_N_F = getIcon(2, 3);
+    public static final Resource BTN_META_F_N = getIcon(3, 4);
+    public static final Resource BTN_META_F_F = getIcon(3, 3);
+    public static final Resource BTN_META_D = getIcon(2, 5);
+    public static final Resource BTN_NBT_N_N = getIcon(4, 4);
+    public static final Resource BTN_NBT_N_F = getIcon(4, 3);
+    public static final Resource BTN_NBT_F_N = getIcon(5, 4);
+    public static final Resource BTN_NBT_F_F = getIcon(5, 3);
+    public static final Resource BTN_NBT_D = getIcon(4, 5);
+
+    public static final Resource WGT_BUTTON_N = getWidget(0);
+    public static final Resource WGT_BUTTON_F = getWidget(1);
+    public static final Resource WGT_BUTTON_D = getWidget(2);
+    public static final Resource WGT_BUTTON_S_N = getWidget(3);
+    public static final Resource WGT_BUTTON_S_F = getWidget(4);
+    public static final Resource WGT_BUTTON_S_D = getWidget(5);
+    public static final Resource WGT_SLOT = getWidget(6);
+    public static final Resource WGT_PANEL_N = getWidget(7);
+    public static final Resource WGT_PANEL_F = getWidget(8);
+    public static final Resource WGT_PAGER_F = getWidget(9);
+    public static final Resource WGT_HELP_B = getWidget(10);
+    public static final Resource WGT_LCD_BG = getWidget(11);
+
+    public static final Resource WGT_ARR_L_F = new Resource(112, 132, 7, 10);
+    public static final Resource WGT_ARR_L_N = new Resource(119, 132, 7, 10);
+    public static final Resource WGT_ARR_L_D = new Resource(126, 132, 7, 10);
+    public static final Resource WGT_ARR_R_F = new Resource(112, 142, 7, 10);
+    public static final Resource WGT_ARR_R_N = new Resource(119, 142, 7, 10);
+    public static final Resource WGT_ARR_R_D = new Resource(126, 142, 7, 10);
+    public static final Resource WGT_SCROLL = new Resource(133, 132, 14, 17);
+    public static final Resource WGT_HELP_F = new Resource(147, 132, 20, 20);
+    public static final Resource WGT_HELP_N = new Resource(167, 132, 20, 20);
+
+    public static final Resource ICN_RECENT_N = getIcon(0, 7);
+    public static final Resource ICN_RECENT_F = getIcon(0, 6);
+    public static final Resource ICN_INPUT_N = getIcon(1, 7);
+    public static final Resource ICN_INPUT_F = getIcon(1, 6);
+    public static final Resource ICN_OUTPUT_N = getIcon(2, 7);
+    public static final Resource ICN_OUTPUT_F = getIcon(2, 6);
+    public static final Resource ICN_CATALYST_N = getIcon(3, 7);
+    public static final Resource ICN_CATALYST_F = getIcon(3, 6);
+    public static final Resource ICN_LIST_N = getIcon(4, 7);
+    public static final Resource ICN_LIST_F = getIcon(4, 6);
+    public static final Resource ICN_LABEL_N = getIcon(5, 7);
+    public static final Resource ICN_LABEL_F = getIcon(5, 6);
+    public static final Resource ICN_HELP_N = getIcon(6, 7);
+    public static final Resource ICN_HELP_F = getIcon(6, 6);
+    public static final Resource ICN_STACK_N = getIcon(7, 7);
+    public static final Resource ICN_STACK_F = getIcon(7, 6);
+    public static final Resource ICN_TEXT_N = getIcon(8, 7);
+    public static final Resource ICN_TEXT_F = getIcon(8, 6);
+    public static final Resource ICN_MULTI_N = getIcon(9, 7);
+    public static final Resource ICN_MULTI_F = getIcon(9, 6);
     public static final Resource LBL_FRAME = getLabel(0);
     public static final Resource LBL_FLUID = getLabel(1);
     public static final Resource LBL_UNIV_B = getLabel(2);
@@ -120,7 +136,7 @@ public class Resource {
     public static final ResourceGroup BTN_LABEL = new ResourceGroup(BTN_LABEL_N, BTN_LABEL_F);
     public static final ResourceGroup BTN_NEW = new ResourceGroup(BTN_NEW_N, BTN_NEW_F);
     public static final ResourceGroup BTN_SEARCH = new ResourceGroup(BTN_SEARCH_N, BTN_SEARCH_F);
-    public static final ResourceGroup BTN_SAVE = new ResourceGroup(BTN_SAVE_N, BTN_SAVE_F);
+    public static final ResourceGroup BTN_SAVE = new ResourceGroup(BTN_SAVE_N, BTN_SAVE_F, BTN_SAVE_D);
     public static final ResourceGroup BTN_COPY = new ResourceGroup(BTN_COPY_N, BTN_COPY_F, BTN_COPY_D);
     public static final ResourceGroup BTN_DEL = new ResourceGroup(BTN_DEL_N, BTN_DEL_F);
     public static final ResourceGroup BTN_YES = new ResourceGroup(BTN_YES_N, BTN_YES_F, BTN_YES_D);
@@ -130,6 +146,12 @@ public class Resource {
     public static final ResourceGroup BTN_OUT = new ResourceGroup(BTN_OUT_N, BTN_OUT_F, BTN_OUT_D);
     public static final ResourceGroup BTN_CAT = new ResourceGroup(BTN_CAT_N, BTN_CAT_F, BTN_CAT_D);
     public static final ResourceGroup BTN_LIST = new ResourceGroup(BTN_LIST_N, BTN_LIST_F, BTN_LIST_D);
+    public static final ResourceGroup BTN_IMPORT = new ResourceGroup(BTN_IMPORT_N, BTN_IMPORT_F, BTN_IMPORT_D);
+    public static final ResourceGroup BTN_EXPORT_N = new ResourceGroup(BTN_EXPORT_N_N, BTN_EXPORT_N_F, BTN_EXPORT_N_D);
+    public static final ResourceGroup BTN_EXPORT_1 = new ResourceGroup(BTN_EXPORT_1_N, BTN_EXPORT_1_F, BTN_EXPORT_1_D);
+    public static final ResourceGroup BTN_INV_E = new ResourceGroup(BTN_INV_E_N, BTN_INV_E_F);
+    public static final ResourceGroup BTN_INV_D = new ResourceGroup(BTN_INV_D_N, BTN_INV_D_F);
+
     public static final ResourceGroup BTN_META_N = new ResourceGroup(BTN_META_N_N, BTN_META_N_F, BTN_META_D);
     public static final ResourceGroup BTN_CAP_N = new ResourceGroup(BTN_CAP_N_N, BTN_CAP_N_F, BTN_CAP_D);
     public static final ResourceGroup BTN_NBT_N = new ResourceGroup(BTN_NBT_N_N, BTN_NBT_N_F, BTN_NBT_D);
@@ -145,6 +167,7 @@ public class Resource {
     public static final ResourceGroup ICN_LIST = new ResourceGroup(ICN_LIST_N, ICN_LIST_F);
     public static final ResourceGroup ICN_LABEL = new ResourceGroup(ICN_LABEL_N, ICN_LABEL_F);
     public static final ResourceGroup ICN_TEXT = new ResourceGroup(ICN_TEXT_N, ICN_TEXT_F);
+    public static final ResourceGroup ICN_HELP = new ResourceGroup(ICN_HELP_N, ICN_HELP_F);
 
     protected int xPos, yPos, xSize, ySize;
     protected ResourceLocation rl;
@@ -186,7 +209,11 @@ public class Resource {
     }
 
     private static Resource getLabel(int x) {
-        return new Resource(x * 16, 70, 16, 16);
+        return new Resource(x * 16, 132, 16, 16);
+    }
+
+    private static Resource getWidget(int x) {
+        return new Resource(x * 20, 112, 20, 20);
     }
 
     public static class ResourceGroup {

src/main/java/me/towdium/jecalculation/gui/guis/GuiCalculator.java

@@ -9,16 +9,16 @@ import me.towdium.jecalculation.gui.JecaGui;
 import me.towdium.jecalculation.gui.Resource;
 import me.towdium.jecalculation.gui.widgets.*;
 import me.towdium.jecalculation.utils.ItemStackHelper;
+import me.towdium.jecalculation.utils.wrappers.Pair;
 import net.minecraft.client.Minecraft;
 import net.minecraft.entity.player.InventoryPlayer;
 import net.minecraft.item.ItemStack;
+import org.lwjgl.input.Keyboard;
 
 import javax.annotation.ParametersAreNonnullByDefault;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
+import java.util.*;
 import java.util.function.Consumer;
+import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 /**
@@ -45,11 +45,9 @@ public class GuiCalculator extends WContainer implements IGui  {
         Controller.setAmount(i.getText());
         refreshCalculator();
     });
-    WLabel label = new WLabel(31, 7, 20, 20, WLabel.Mode.SELECTOR).setListener((i, v) -> {
-        Controller.setRecent(v);
-        refreshRecent();
-        refreshCalculator();
-    });
+    WLabel label = new WLabel(31, 7, 20, 20, WLabel.Mode.SELECTOR).setListener((i, v) -> refreshLabel(v, false));
+    WButton invE = new WButtonIcon(149, 62, 20, 20, Resource.BTN_INV_E, "calculator.inventory_enabled");
+    WButton invD = new WButtonIcon(149, 62, 20, 20, Resource.BTN_INV_D, "calculator.inventory_disabled");
 
     public GuiCalculator() {
         add(new WHelp("calculator"));
@@ -66,7 +64,19 @@ public class GuiCalculator extends WContainer implements IGui  {
         add(new WText(53, 13, JecaGui.Font.PLAIN, "x"));
         add(new WLine(55));
         add(new WIcon(151, 31, 18, 18, Resource.ICN_RECENT, "calculator.history"));
-        addAll(recent, label, input, output, catalyst, steps, result, amount);
+        add(recent, label, input, output, catalyst, steps, result, amount, Controller.getDetectInv() ? invE : invD);
+        invE.setListener(i -> {
+            Controller.setDetectInv(false);
+            remove(invE);
+            add(invD);
+            refreshCalculator();
+        });
+        invD.setListener(i -> {
+            Controller.setDetectInv(true);
+            remove(invD);
+            add(invE);
+            refreshCalculator();
+        });
         refreshRecent();
         setMode(Mode.INPUT);
     }
@@ -97,7 +107,8 @@ public class GuiCalculator extends WContainer implements IGui  {
             long i = s.isEmpty() ? 1 : Long.parseLong(amount.getText());
             amount.setColor(JecaGui.COLOR_TEXT_WHITE);
             List<ILabel> dest = Collections.singletonList(label.getLabel().copy().setAmount(i));
-            calculator = new CostList(getInventory(), dest).calculate();
+            CostList list = Controller.getDetectInv() ? new CostList(getInventory(), dest) : new CostList(dest);
+            calculator = list.calculate();
         } catch (NumberFormatException | ArithmeticException e) {
             amount.setColor(JecaGui.COLOR_TEXT_RED);
             calculator = null;
@@ -138,7 +149,69 @@ public class GuiCalculator extends WContainer implements IGui  {
         }
     }
 
+    private void refreshLabel(ILabel l, boolean replace) {
+        Controller.setRecent(l, replace);
+        refreshRecent();
+        refreshCalculator();
+        if (findRecipe(l).isEmpty()) {
+            Pair<List<ILabel>, List<ILabel>> guess = ILabel.CONVERTER.guess(Collections.singletonList(l));
+            LinkedHashSet<ILabel> match = new LinkedHashSet<>();
+            List<ILabel> fuzzy = new ArrayList<>();
+            Stream.of(guess.one, guess.two).flatMap(Collection::stream).forEach(i -> {
+                List<ILabel> list = findRecipe(i);
+                list.forEach(j -> match.add(j.setPercent(false).setAmount(1)));
+                if (!list.isEmpty()) fuzzy.add(i);
+            });
+            match.addAll(fuzzy);
+            List<ILabel> list = new ArrayList<>(match);
+            if (!match.isEmpty()) add(new Suggest(list.size() > 3 ? list.subList(0, 3) : list));
+        }
+    }
+
+    private static List<ILabel> findRecipe(ILabel l) {
+        return Controller.recipeIterator().stream()
+                         .map(i -> i.matches(l))
+                         .filter(Optional::isPresent)
+                         .map(Optional::get)
+                         .collect(Collectors.toList());
+    }
+
     enum Mode {
         INPUT, OUTPUT, CATALYST, STEPS
     }
+    class Suggest extends WContainer {
+        public Suggest(List<ILabel> labels) {
+            int width = labels.size() * 20;
+            add(new WPanel(0 - width, 2, 56 + width, 30));
+            add(new WLabel(31, 7, 20, 20, WLabel.Mode.SELECTOR).setLabel(label.getLabel())
+                                                               .setListener((i, v) -> refresh(v)));
+            add(new WIcon(5 - width, 7, 18, 20, Resource.ICN_HELP, "calculator.suggest"));
+            add(new WLine(26, 7, 20, false));
+            for (int i = 0; i < labels.size(); i++) {
+                add(new WLabel(3 - i * 20, 7, 20, 20, WLabel.Mode.PICKER).setLabel(labels.get(i))
+                                                                         .setListener((j, v) -> refresh(v)));
+            }
+        }
+
+        public void refresh(ILabel l) {
+            GuiCalculator.this.remove(this);
+            refreshLabel(l, true);
+        }
+
+        @Override
+        public boolean onClicked(JecaGui gui, int xMouse, int yMouse, int button) {
+            if (!super.onClicked(gui, xMouse, yMouse, button)) GuiCalculator.this.remove(this);
+            return true;
+        }
+
+        @Override
+        public boolean onKey(JecaGui gui, char ch, int code) {
+            if (!super.onKey(gui, ch, code)) {
+                if (code == Keyboard.KEY_ESCAPE) {
+                    GuiCalculator.this.remove(this);
+                    return true;
+                } else return false;
+            } else return true;
+        }
+    }
 }

src/main/java/me/towdium/jecalculation/gui/guis/GuiDisambiguation.java

@@ -11,8 +11,7 @@ import javax.annotation.ParametersAreNonnullByDefault;
 import java.util.List;
 import java.util.function.Consumer;
 
-import static me.towdium.jecalculation.gui.Resource.ICN_LABEL;
-import static me.towdium.jecalculation.gui.Resource.ICN_LIST;
+import static me.towdium.jecalculation.gui.Resource.*;
 
 /**
  * Author: towdium
@@ -30,16 +29,17 @@ public class GuiDisambiguation extends IPicker.Impl implements IGui {
         WSwitcher switcher = new WSwitcher(7, 7, 162, this.record.size()).setListener(i -> setPage(i.getIndex()));
         ListenerValue<WLabelScroll, Integer> consumer = (i, v) -> callback.accept(i.get(v).copy().multiply(-1));
         add(new WPanel());
-        add(new WIcon(7, 48, 18, 54, ICN_LIST, "disambiguation.list"));
-        add(new WIcon(7, 105, 18, 54, ICN_LABEL, "disambiguation.label"));
+        add(new WIcon(7, 24, 20, 20, ICN_TEXT, "common.search"));
+        add(new WIcon(7, 48, 18, 54, ICN_LIST, "disamb.list"));
+        add(new WIcon(7, 105, 18, 54, ICN_LABEL, "disamb.label"));
         add(new WSearch(25, 24, 90, lsUp.setListener(consumer), lsDown.setListener(consumer)));
-        addAll(switcher, lsUp, lsDown);
+        add(switcher, lsUp, lsDown);
         setPage(0);
     }
 
 
     protected void setPage(int n) {
         lsUp.setLabels(record.get(n));
-        lsDown.setLabels(ILabel.CONVERTER.guess(record.get(n)));
+        lsDown.setLabels(ILabel.CONVERTER.guess(record.get(n)).one);
     }
 }

src/main/java/me/towdium/jecalculation/gui/guis/GuiImport.java

@@ -25,9 +25,9 @@ import static me.towdium.jecalculation.gui.Resource.ICN_TEXT;
 public class GuiImport extends WContainer implements IGui, ISearchable {
     List<Quad<Boolean, String, String, Recipes>> data;  // selected, file, group, recipes
     List<Quad<Boolean, String, String, Recipes>> filtered;
-    WSearch search = new WSearch(25, 25, 90, this);
+    WSearch search = new WSearch(26, 25, 90, this);
     WSwitcher page;
-    WButton confirm = new WButtonIcon(149, 25, 20, 20, BTN_YES, "common.confirm").setDisabled(true)
+    WButton confirm = new WButtonIcon(149, 25, 20, 20, BTN_YES, "import.confirm").setDisabled(true)
                                                                                  .setListener(i -> {
                                                                                      data.stream().filter(j -> j.one).forEach(j -> Controller.inport(j.four, j.three));
                                                                                      JecaGui.displayParent();
@@ -35,9 +35,9 @@ public class GuiImport extends WContainer implements IGui, ISearchable {
     List<Pair<WTick, WText>> content = new ArrayList<>();
 
     public GuiImport() {
-        add(new WPanel());
+        add(new WHelp("import"), new WPanel());
         add(new WIcon(7, 25, 20, 20, ICN_TEXT, "common.search"));
-        addAll(search, confirm);
+        add(search, confirm);
         IntStream.range(0, 7).forEach(i -> {
             WTick tick = new WTick(7, 49 + 16 * i, 13, 13, "import.tick").setDisabled(true)
                                                                          .setListener(j -> {
@@ -45,7 +45,7 @@ public class GuiImport extends WContainer implements IGui, ISearchable {
                                                                              confirm.setDisabled(data.stream().noneMatch(k -> k.one));
                                                                          });
             WText text = new WTextExpand(49 + 16 * i, "");
-            addAll(tick, text);
+            add(tick, text);
             content.add(new Pair<>(tick, text));
         });
     }

src/main/java/me/towdium/jecalculation/gui/guis/GuiLabel.java

@@ -40,7 +40,7 @@ public class GuiLabel extends WContainer implements IGui {
             add(new WPage(i, r, false).setListener(j -> refresh(i)));
             index.value += 1;
         });
-        addAll(new WHelp("label"), new WPanel());
+        add(new WHelp("label"), new WPanel());
         add(container);
         refresh(0);
     }

src/main/java/me/towdium/jecalculation/gui/guis/GuiRecipe.java

@@ -1,5 +1,6 @@
 package me.towdium.jecalculation.gui.guis;
 
+import codechicken.nei.PositionedStack;
 import codechicken.nei.recipe.IRecipeHandler;
 import me.towdium.jecalculation.data.Controller;
 import me.towdium.jecalculation.data.label.ILabel;
@@ -26,34 +27,37 @@ public class GuiRecipe extends WContainer implements IGui {
     Pair<String, Integer> dest;
     HashMap<Integer, List<ILabel>> disambiguation = new HashMap<>();
     WSwitcher switcherGroup = new WSwitcher(7, 7, 162, Controller.getGroups());
-    WTextField textField = new WTextField(49, 33, 119);
-    WLabelGroup groupCatalyst = new WLabelGroup(28, 87, 7, 1, 20, 20, WLabel.Mode.EDITOR);
-    WButton buttonDisamb = new WButtonIcon(121, 33, 20, 20, BTN_DISAMB, "recipe.disamb").setListener(i -> {
+    WTextField textField = new WTextField(49, 31, 119);
+    WLabelGroup groupCatalyst = new WLabelGroup(29, 87, 7, 1, 20, 20, WLabel.Mode.EDITOR).setListener((i, v) -> {
+        disambiguation.remove(v + 14);
+        refresh();
+    });
+    WLabelGroup groupInput = new WLabelGroup(29, 111, 7, 2, 20, 20, WLabel.Mode.EDITOR).setListener((i, v) -> {
+        disambiguation.remove(v);
+        refresh();
+    });
+    WLabelGroup groupOutput = new WLabelGroup(29, 63, 7, 1, 20, 20, WLabel.Mode.EDITOR).setListener((i, v) -> {
+        disambiguation.remove(v + 21);
+        refresh();
+    });
+    WButton buttonDisamb = new WButtonIcon(121, 31, 20, 20, BTN_DISAMB, "recipe.disamb").setListener(i -> {
         if (disambiguation != null) JecaGui.displayGui(new GuiDisambiguation(new ArrayList<>(disambiguation.values()))
                                                                .setCallback(l -> {
                                                                    JecaGui.displayParent();
                                                                    JecaGui.getCurrent().hand = l;
                                                                }));
     });
-    WLabelGroup groupInput = new WLabelGroup(28, 111, 7, 2, 20, 20, WLabel.Mode.EDITOR).setListener((i, v) -> {
-        disambiguation.remove(v);
-        refresh();
-    });
-    WLabelGroup groupOutput = new WLabelGroup(28, 63, 7, 1, 20, 20, WLabel.Mode.EDITOR).setListener((i, v) -> {
-        disambiguation.remove(v + 21);
-        refresh();
-    });
-    WButton buttonClear = new WButtonIcon(64, 33, 20, 20, BTN_DEL, "recipe.clear").setListener(i -> clear());
-    WButton buttonCopy = new WButtonIcon(83, 33, 20, 20, BTN_COPY, "recipe.copy").setListener(i -> {
+    WButton buttonClear = new WButtonIcon(64, 31, 20, 20, BTN_DEL, "recipe.clear").setListener(i -> clear());
+    WButton buttonCopy = new WButtonIcon(83, 31, 20, 20, BTN_COPY, "recipe.copy").setListener(i -> {
         Controller.addRecipe(switcherGroup.getText(), toRecipe());
         JecaGui.displayParent();
     });
-    WButton buttonLabel = new WButtonIcon(45, 33, 20, 20, BTN_LABEL, "recipe.label").setListener(i ->
+    WButton buttonLabel = new WButtonIcon(45, 31, 20, 20, BTN_LABEL, "recipe.label").setListener(i ->
                                                                                                          JecaGui.displayGui(new GuiLabel((l) -> {
                                                                                                              JecaGui.displayParent();
                                                                                                              JecaGui.getCurrent().hand = l;
                                                                                                          })));
-    WButton buttonSave = new WButtonIcon(26, 33, 20, 20, BTN_SAVE, "recipe.save").setListener(i -> {
+    WButton buttonSave = new WButtonIcon(26, 31, 20, 20, BTN_SAVE, "recipe.save").setDisabled(true).setListener(i -> {
         if (dest == null)
             Controller.addRecipe(switcherGroup.getText(), toRecipe());
         else {
@@ -66,17 +70,17 @@ public class GuiRecipe extends WContainer implements IGui {
         }
         JecaGui.displayParent();
     });
-    WButton buttonDel = new WButtonIcon(102, 33, 20, 20, BTN_NO, "recipe.delete").setListener(i -> {
+    WButton buttonDel = new WButtonIcon(102, 31, 20, 20, BTN_NO, "recipe.delete").setListener(i -> {
         Controller.removeRecipe(dest.one, dest.two);
         JecaGui.displayParent();
     });
-    WButton buttonYes = new WButtonIcon(7, 33, 20, 20, BTN_YES, "recipe.confirm").setDisabled(true).setListener(i -> {
+    WButton buttonYes = new WButtonIcon(7, 31, 20, 20, BTN_YES, "recipe.confirm").setDisabled(true).setListener(i -> {
         switcherGroup.setTemp(textField.getText());
         textField.setText("");
         setNewGroup(false);
     });
-    WButton buttonNo = new WButtonIcon(26, 33, 20, 20, BTN_NO, "common.cancel").setListener(i -> setNewGroup(false));
-    WButton buttonNew = new WButtonIcon(7, 33, 20, 20, BTN_NEW, "recipe.new").setListener(i -> setNewGroup(true));
+    WButton buttonNo = new WButtonIcon(26, 31, 20, 20, BTN_NO, "common.cancel").setListener(i -> setNewGroup(false));
+    WButton buttonNew = new WButtonIcon(7, 31, 20, 20, BTN_NEW, "recipe.new").setListener(i -> setNewGroup(true));
 
     public GuiRecipe(String group, int index) {
         this();
@@ -86,15 +90,16 @@ public class GuiRecipe extends WContainer implements IGui {
         switcherGroup.setIndex(Controller.getGroups().indexOf(group));
         buttonCopy.setDisabled(false);
         buttonDel.setDisabled(false);
+        buttonSave.setDisabled(false);
     }
 
     public GuiRecipe() {
-        addAll(new WHelp("recipe"), new WPanel());
-        add(new WIcon(7, 63, 21, 20, ICN_OUTPUT, "common.output"));
-        add(new WIcon(7, 87, 21, 20, ICN_CATALYST, "common.catalyst"));
-        add(new WIcon(7, 111, 21, 40, ICN_INPUT, "common.input"));
+        add(new WHelp("recipe"), new WPanel());
+        add(new WIcon(7, 63, 22, 20, ICN_OUTPUT, "common.output"));
+        add(new WIcon(7, 87, 22, 20, ICN_CATALYST, "common.catalyst"));
+        add(new WIcon(7, 111, 22, 40, ICN_INPUT, "common.input"));
         add(new WLine(57));
-        addAll(groupInput, groupCatalyst, groupOutput, switcherGroup);
+        add(groupInput, groupCatalyst, groupOutput, switcherGroup);
         if (switcherGroup.getTexts().isEmpty()) switcherGroup.setTemp(Utilities.I18n.get("gui.common.default"));
         setNewGroup(false);
         buttonCopy.setDisabled(true);
@@ -105,11 +110,11 @@ public class GuiRecipe extends WContainer implements IGui {
 
     public void setNewGroup(boolean b) {
         if (b) {
-            removeAll(buttonNew, buttonLabel, buttonClear, buttonCopy, buttonSave, buttonDisamb, buttonDel);
-            addAll(buttonYes, buttonNo, textField);
+            remove(buttonNew, buttonLabel, buttonClear, buttonCopy, buttonSave, buttonDisamb, buttonDel);
+            add(buttonYes, buttonNo, textField);
         } else {
-            addAll(buttonNew, buttonLabel, buttonClear, buttonCopy, buttonSave, buttonDisamb, buttonDel);
-            removeAll(buttonYes, buttonNo, textField);
+            add(buttonNew, buttonLabel, buttonClear, buttonCopy, buttonSave, buttonDisamb, buttonDel);
+            remove(buttonYes, buttonNo, textField);
         }
     }
 
@@ -126,50 +131,49 @@ public class GuiRecipe extends WContainer implements IGui {
         disambiguation = new HashMap<>();
 
         // input
-        List<ItemStack> itemStacks = recipe.getIngredientStacks(recipeIndex).stream()
+        List<ItemStack> inputItemStacks = recipe.getIngredientStacks(recipeIndex).stream()
                                            .map((positionedStack) -> positionedStack.item).collect(Collectors.toList());
-        merge(input, itemStacks.stream().map(ILabel.Converter::from).collect(Collectors.toList()));
+        List<ItemStack> outputItemStacks = Collections.singletonList(recipe.getResultStack(recipeIndex).item);
 
-        // output
-        ItemStack outputStack = recipe.getResultStack(recipeIndex).item;
-        merge(output, Stream.of(outputStack).map(ILabel.Converter::from).collect(Collectors.toList()));
+        merge(input, inputItemStacks, recipe);
+        merge(output, outputItemStacks, recipe);
 
         // catalyst ignore multiple catalyst
         NEIPlugin.getCatalyst(recipe).map(ILabel.Converter::from).ifPresent(catalyst -> {
             groupCatalyst.setLabel(catalyst, 0);
         });
 
-        groupInput.setLabel(sort(input, 0, true), 0);
-        groupOutput.setLabel(sort(output, 21, false), 0);
+        groupInput.setLabel(sort(input, 0), 0);
+        groupOutput.setLabel(sort(output, 21), 0);
         refresh();
     }
 
-    private void merge(ArrayList<Trio<ILabel, CostList, CostList>> dst, List<ILabel> list) {
+    private void merge(ArrayList<Trio<ILabel, CostList, CostList>> dst, List<ItemStack> gi, IRecipeHandler context) {
+        List<ILabel> list = gi.stream().map(ILabel.Converter::from).collect(Collectors.toList());
         if (list.isEmpty())
             return;
         dst.stream().filter(p -> {
             CostList cl = new CostList(list);
             if (p.three.equals(cl)) {
-                ILabel.MERGER.merge(p.one, ILabel.CONVERTER.first(list)).ifPresent(i -> p.one = i);
+                ILabel.MERGER.merge(p.one, ILabel.CONVERTER.first(list, context)).ifPresent(i -> p.one = i);
                 p.two = p.two.merge(cl, true, false);
                 return true;
             } else
                 return false;
         }).findAny().orElseGet(() -> {
-            Trio<ILabel, CostList, CostList> ret = new Trio<>(ILabel.CONVERTER.first(list), new CostList(list),
+            Trio<ILabel, CostList, CostList> ret = new Trio<>(ILabel.CONVERTER.first(list, context), new CostList(list),
                                                               new CostList(list));
             dst.add(ret);
             return ret;
         });
     }
 
-    private ArrayList<ILabel> sort(ArrayList<Trio<ILabel, CostList, CostList>> src, int offset, boolean guess) {
+    private ArrayList<ILabel> sort(ArrayList<Trio<ILabel, CostList, CostList>> src, int offset) {
         ArrayList<ILabel> ret = new ArrayList<>();
         for (int i = 0; i < src.size(); i++) {
             Trio<ILabel, CostList, CostList> p = src.get(i);
             ret.add(p.one);
-            if (guess && !ILabel.CONVERTER.guess(p.three.getLabels()).isEmpty())
-                disambiguation.put(i + offset, p.two.getLabels());
+            if (p.two.getLabels().size() > 1) disambiguation.put(i + offset, p.two.getLabels());
         }
         return ret;
     }
@@ -190,5 +194,11 @@ public class GuiRecipe extends WContainer implements IGui {
 
     void refresh() {
         buttonDisamb.setDisabled(disambiguation.isEmpty());
+        try {
+            Recipe r = toRecipe();
+            buttonSave.setDisabled(Controller.hasDuplicate(r));
+        } catch (IllegalArgumentException e) {
+            buttonSave.setDisabled(true);
+        }
     }
 }

src/main/java/me/towdium/jecalculation/gui/guis/GuiSearch.java

@@ -1,8 +1,10 @@
 package me.towdium.jecalculation.gui.guis;
 
 import me.towdium.jecalculation.data.Controller;
+import me.towdium.jecalculation.data.label.ILabel;
 import me.towdium.jecalculation.data.structure.Recipe;
 import me.towdium.jecalculation.gui.JecaGui;
+import me.towdium.jecalculation.gui.Resource;
 import me.towdium.jecalculation.gui.widgets.*;
 import me.towdium.jecalculation.polyfill.google.common.collect.Streams;
 import me.towdium.jecalculation.utils.Utilities;
@@ -12,37 +14,52 @@ import net.minecraft.util.ChatComponentTranslation;
 
 import java.io.File;
 import java.util.ArrayList;
+import java.util.IdentityHashMap;
 import java.util.List;
+import java.util.function.Consumer;
 import java.util.function.Supplier;
 import java.util.stream.Collectors;
+
 import static me.towdium.jecalculation.gui.Resource.*;
 import static me.towdium.jecalculation.gui.widgets.WLabel.Mode.PICKER;
 
 public class GuiSearch extends WContainer implements IGui {
     WSwitcher group;
     WButton export;
-    List<Trio<Recipe, String, Integer>> recipes;
-    WLabelScroll labels = new WLabelScroll(7, 51, 8, 6, PICKER, true).setListener((i, v) ->
-                                                                                          JecaGui.displayGui(true, true, new GuiRecipe(recipes.get(v).two, recipes.get(v).three)));
+    List<ILabel> identifiers;
+    IdentityHashMap<ILabel, Trio<Recipe, String, Integer>> recipes;
+    WLabelScroll labels = new WLabelScroll(7, 51, 8, 6, PICKER, true).setListener((i, v) -> {
+        Trio<Recipe, String, Integer> recipe = recipes.get(i.get(v));
+        JecaGui.displayGui(true, true, new GuiRecipe(recipe.two, recipe.three));
+    });
+
 
     public GuiSearch() {
-        add(new WPanel());
-        add(new WSearch(25, 25, 90, labels));
+        add(new WHelp("search"), new WPanel());
+        add(new WSearch(26, 25, 90, labels));
         add(new WIcon(7, 25, 20, 20, ICN_TEXT, "common.search"));
-        add(new WButtonIcon(131, 25, 20, 20, BTN_IN, "search.import")
+        add(new WButtonIcon(131, 25, 20, 20, BTN_IMPORT, "search.import")
                     .setListener(i -> JecaGui.displayGui(new GuiImport())));
         add(labels);
     }
 
     private void generate() {
+        identifiers = new ArrayList<>();
+        recipes = new IdentityHashMap<>();
+        Consumer<Trio<Recipe, String, Integer>> add = i -> {
+            ILabel id = i.one.getRep();
+            recipes.put(id, i);
+            identifiers.add(id);
+        };
+
         if (group.getIndex() == 0) {
-            recipes = Controller.stream()
-                                .flatMap(i -> Streams.mapWithIndex(i.two.stream(), (j, k) -> new Trio<>(j, i.one, (int) k)))
-                                .collect(Collectors.toList());
+            Controller.stream()
+                      .flatMap(i -> Streams.mapWithIndex(i.two.stream(), (j, k) -> new Trio<>(j, i.one, (int) k)))
+                      .forEach(add);
         } else {
             String s = group.getText();
-            recipes = Streams.mapWithIndex(Controller.getRecipes(s).stream(), (i, j) -> new Trio<>(i, s, (int) j))
-                             .collect(Collectors.toList());
+            Streams.mapWithIndex(Controller.getRecipes(s).stream(), (j, k) -> new Trio<>(j, s, (int) k))
+                   .forEach(add);
         }
     }
 
@@ -51,16 +68,19 @@ public class GuiSearch extends WContainer implements IGui {
         remove(export);
         String tooltip;
         Supplier<File> func;
+        ResourceGroup texture;
         generate();
         if (group.getIndex() == 0) {
             tooltip = "search.export_all";
             func = Controller::export;
+            texture = Resource.BTN_EXPORT_N;
         } else {
             tooltip = "search.export_group";
             func = () -> Controller.export(group.getText());
+            texture = Resource.BTN_EXPORT_1;
         }
-        labels.setLabels(recipes.stream().map(i -> i.one.getRep()).collect(Collectors.toList()));
-        export = new WButtonIcon(149, 25, 20, 20, BTN_OUT, tooltip).setListener(i -> {
+        labels.setLabels(identifiers);
+        export = new WButtonIcon(149, 25, 20, 20, texture, tooltip).setListener(i -> {
             File f = func.get();
             Minecraft.getMinecraft().thePlayer.addChatMessage(new ChatComponentTranslation(
                     "jecalculation.chat.export", f.getAbsolutePath()));
@@ -70,7 +90,7 @@ public class GuiSearch extends WContainer implements IGui {
 
     @Override
     public void onVisible(JecaGui gui) {
-        removeAll(group);
+        this.remove(group);
         ArrayList<String> groups = new ArrayList<>();
         groups.add(Utilities.I18n.get("gui.search.all"));
         groups.addAll(Controller.getGroups());
@@ -78,7 +98,7 @@ public class GuiSearch extends WContainer implements IGui {
         if (index >= groups.size()) index = groups.size() - 1;
         group = new WSwitcher(7, 7, 162, groups).setListener(i -> refresh());
         group.setIndex(index);
-        addAll(group);
+        this.add(group);
         refresh();
     }
 }

src/main/java/me/towdium/jecalculation/gui/guis/pickers/PickerItemStack.java

@@ -22,53 +22,54 @@ import static me.towdium.jecalculation.gui.Resource.*;
 @ParametersAreNonnullByDefault
 @SideOnly(Side.CLIENT)
 public class PickerItemStack extends IPicker.Impl implements IGui {
-    WLabel label = new WLabel(7, 7, 20, 20, WLabel.Mode.SELECTOR).setListener((i, v) -> update());
-    WButton bConfirm = new WButtonIcon(149, 7, 20, 20, BTN_YES).setListener(i -> callback.accept(label.getLabel()));
-    WButton bBbtN = new WButtonIcon(49, 7, 20, 20, BTN_NBT_N).setListener(i -> setFNbt(true));
-    WButton bNbtF = new WButtonIcon(49, 7, 20, 20, BTN_NBT_F).setListener(i -> setFNbt(false));
-    WButton bCapN = new WButtonIcon(68, 7, 20, 20, BTN_CAP_N).setListener(i -> setFCap(true));
-    WButton bCapF = new WButtonIcon(68, 7, 20, 20, BTN_CAP_F).setListener(i -> setFCap(false));
-    WButton bMetaN = new WButtonIcon(30, 7, 20, 20, BTN_META_N).setListener(i -> setFMeta(true));
-    WButton bMetaF = new WButtonIcon(30, 7, 20, 20, BTN_META_F).setListener(i -> setFMeta(false));
+    WLabel label = new WLabel(7, 7, 20, 20, WLabel.Mode.SELECTOR).setListener((i, v) -> update(v));
+    WButton bConfirm = new WButtonIcon(149, 7, 20, 20, BTN_YES, "item_stack.confirm").setListener(i -> callback.accept(label.getLabel()));
+    WButton bNbtN = new WButtonIcon(49, 7, 20, 20, BTN_NBT_N, "item_stack.nbt_normal").setListener(i -> setFNbt(true));
+    WButton bNbtF = new WButtonIcon(49, 7, 20, 20, BTN_NBT_F, "item_stack.nbt_fuzzy").setListener(i -> setFNbt(false));
+    WButton bCapN = new WButtonIcon(68, 7, 20, 20, BTN_CAP_N, "item_stack.capability_normal").setListener(i -> setFCap(true));
+    WButton bCapF = new WButtonIcon(68, 7, 20, 20, BTN_CAP_F, "item_stack.capability_fuzzy").setListener(i -> setFCap(false));
+    WButton bMetaN = new WButtonIcon(30, 7, 20, 20, BTN_META_N, "item_stack.meta_normal").setListener(i -> setFMeta(true));
+    WButton bMetaF = new WButtonIcon(30, 7, 20, 20, BTN_META_F, "item_stack.meta_fuzzy").setListener(i -> setFMeta(false));
+    ILabel raw = ILabel.EMPTY;
+    boolean fMeta, fNbt, fCap = false;
 
     public PickerItemStack() {
-        addAll(label, bConfirm);
-        add(bConfirm);
-        update();
+        add(label, bConfirm);
+        update(ILabel.EMPTY);
     }
 
-    public void update() {
+    public void update(ILabel l) {
+        raw = l;
         setFCap(false);
         setFMeta(false);
         setFNbt(false);
-        boolean b = label.getLabel() == ILabel.EMPTY;
-        bBbtN.setDisabled(b);
+        boolean b = l == ILabel.EMPTY;
+        bNbtN.setDisabled(b);
         bCapN.setDisabled(b);
         bMetaN.setDisabled(b);
         bConfirm.setDisabled(b);
     }
 
     private void setFNbt(boolean b) {
-        setF(b, bBbtN, bNbtF, i -> i.setFNbt(b));
+        setF(b, bNbtN, bNbtF, () -> fNbt = b);
     }
 
     private void setFMeta(boolean b) {
-        setF(b, bMetaN, bMetaF, i -> i.setFMeta(b));
+        setF(b, bMetaN, bMetaF, () -> fMeta = b);
     }
 
     private void setFCap(boolean b) {
-        setF(b, bCapN, bCapF, i -> i.setFCap(b));
+        setF(b, bCapN, bCapF, () -> fCap = b);
     }
 
-    private void setF(boolean b, WButton be, WButton bd, Consumer<LItemStack> c) {
-        if (b) {
-            remove(be);
-            add(bd);
-        } else {
-            remove(bd);
-            add(be);
+    private void setF(boolean b, WButton be, WButton bd, Runnable r) {
+        remove(be, bd);
+        if (b) add(bd);
+        else add(be);
+        r.run();
+        if (raw instanceof LItemStack) {
+            LItemStack lis = (LItemStack) raw;
+            label.setLabel(lis.copy().setFCap(fCap).setFMeta(fMeta).setFNbt(fNbt));
         }
-        ILabel l = label.getLabel();
-        if (l instanceof LItemStack) c.accept((LItemStack) l);
     }
 }

src/main/java/me/towdium/jecalculation/gui/guis/pickers/PickerPlaceholder.java

@@ -33,6 +33,6 @@ public class PickerPlaceholder extends IPicker.Impl implements IGui {
         add(new WButtonIcon(95, 7, 20, 20, BTN_YES, "common.confirm").setListener(i -> {
             if (!create.getText().equals("")) callback.accept(new LPlaceholder(create.getText(), 1));
         }));
-        addAll(scroll, create);
+        add(scroll, create);
     }
 }

src/main/java/me/towdium/jecalculation/gui/guis/pickers/PickerSimple.java

@@ -50,11 +50,9 @@ public class PickerSimple extends IPicker.Impl implements IGui {
         }
 
         static List<ILabel> generate() {
-            List<ILabel> present = new ArrayList<>();
-            List<ILabel> empty = new ArrayList<>();
-            Arrays.stream(OreDictionary.getOreNames()).map(LOreDict::new).forEach(i -> (i.isEmpty() ? empty : present).add(i));
-            present.addAll(empty);
-            return present;
+            return Arrays.stream(OreDictionary.getOreNames())
+                         .filter(i -> !OreDictionary.getOres(i).isEmpty())
+                         .map(LOreDict::new).collect(Collectors.toList());
         }
     }
 }

src/main/java/me/towdium/jecalculation/gui/widgets/IContainer.java

@@ -5,13 +5,9 @@ package me.towdium.jecalculation.gui.widgets;
  * Date: 18-9-25
  */
 public interface IContainer extends IWidget {
-    void add(IWidget w);
+    void add(IWidget... w);
 
-    void addAll(IWidget... w);
-
-    void remove(IWidget w);
-
-    void removeAll(IWidget... w);
+    void remove(IWidget... w);
 
     void clear();
 }

src/main/java/me/towdium/jecalculation/gui/widgets/WButton.java

@@ -37,24 +37,12 @@ public abstract class WButton extends WTooltip {
         return this;
     }
 
-    protected Resource getDisabled() {
-        return WGT_BUTTON_D;
-    }
-
-    protected Resource getNormal() {
-        return WGT_BUTTON_N;
-    }
-
-    protected Resource getFocused() {
-        return WGT_BUTTON_F;
-    }
-
     @Override
     public void onDraw(JecaGui gui, int xMouse, int yMouse) {
         super.onDraw(gui, xMouse, yMouse);
         boolean hovered = JecaGui.mouseIn(xPos + 1, yPos + 1, xSize - 2, ySize - 2, xMouse, yMouse);
-        gui.drawResourceContinuous(disabled ? getDisabled() : (hovered ? getFocused() : getNormal()), xPos, yPos, xSize,
-                                   ySize, 5, 5, 5, 5);
+        gui.drawResourceContinuous(disabled ? WGT_BUTTON_D : (hovered ? WGT_BUTTON_F : WGT_BUTTON_N)
+                , xPos, yPos, xSize, ySize, 5, 5, 5, 5);
     }
 
     @Override
@@ -82,6 +70,6 @@ public abstract class WButton extends WTooltip {
 
     @Override
     protected List<String> getSuffix() {
-        return disabled ? Arrays.asList("disabled", "active", "") : Arrays.asList("active", "");
+        return disabled ? Arrays.asList("disabled", "enabled", "") : Arrays.asList("enabled", "");
     }
 }

src/main/java/me/towdium/jecalculation/gui/widgets/WButtonIcon.java

@@ -44,6 +44,6 @@ public class WButtonIcon extends WButton {
         super.onDraw(gui, xMouse, yMouse);
         Resource r = disabled ? rDisabled : (mouseIn(xMouse, yMouse) ? rFocused : rNormal);
         if (r != null)
-            gui.drawResource(r, xPos + (xSize - r.getXSize()) / 2, yPos + (ySize - r.getYSize()) / 2);
+            gui.drawResource(r, xPos + (xSize - r.getXSize() + 1) / 2, yPos + (ySize - r.getYSize() + 1) / 2);
     }
 }

src/main/java/me/towdium/jecalculation/gui/widgets/WContainer.java

@@ -9,6 +9,7 @@ import me.towdium.jecalculation.utils.Utilities;
 import javax.annotation.Nullable;
 import javax.annotation.ParametersAreNonnullByDefault;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Objects;
 
@@ -25,18 +26,14 @@ public class WContainer implements IContainer {
         widgets.add(w);
     }
 
-    public void addAll(IWidget... w) {
-        for (IWidget aw : w)
-            add(aw);
+    public void add(IWidget... w) {
+        if (w.length == 1) widgets.add(w[0]);
+        else widgets.addAll(Arrays.asList(w));
     }
 
-    public void remove(IWidget w) {
-        widgets.remove(w);
-    }
-
-    public void removeAll(IWidget... w) {
-        for (IWidget aw : w)
-            remove(aw);
+    public void remove(IWidget... w) {
+        if (w.length == 1) widgets.remove(w[0]);
+        else widgets.removeAll(Arrays.asList(w));
     }
 
     public void clear() {

src/main/java/me/towdium/jecalculation/gui/widgets/WHelp.java

@@ -17,43 +17,53 @@ import static me.towdium.jecalculation.gui.Resource.*;
  * Date: 18-9-23
  */
 @ParametersAreNonnullByDefault
-public class WHelp extends WTooltip {
+public class WHelp extends WContainer {
     protected String key;
 
     public WHelp(String content) {
-        super("common.help");
         key = content;
+        if (I18n.search("gui." + WHelp.this.key + ".title").two
+            && I18n.search("gui." + WHelp.this.key + ".help").two) {
+            add(new Impl());
+        }
     }
 
-    @Override
-    public void onDraw(JecaGui gui, int xMouse, int yMouse) {
-        super.onDraw(gui, xMouse, yMouse);
-        gui.drawResourceContinuous(WGT_PANEL_N, -21, 0, 25, 24, 4);
-        gui.drawResource(WGT_HELP_N, -19, 2);
-    }
+    private class Impl extends WTooltip {
+        public Impl() {
+            super("common.help");
+        }
 
-    @Override
-    public boolean mouseIn(int xMouse, int yMouse) {
-        return JecaGui.mouseIn(-21, 0, 24, 24, xMouse, yMouse);
-    }
+        @Override
+        public void onDraw(JecaGui gui, int xMouse, int yMouse) {
+            super.onDraw(gui, xMouse, yMouse);
+            gui.drawResourceContinuous(WGT_PANEL_N, -21, 0, 25, 24, 4);
+            gui.drawResource(WGT_HELP_N, -19, 2);
+        }
 
-    @Override
-    public boolean onClicked(JecaGui gui, int xMouse, int yMouse, int button) {
-        boolean ret = mouseIn(xMouse, yMouse);
-        if (ret)
-            gui.root.add(new Doc());
-        return ret;
+        @Override
+        public boolean mouseIn(int xMouse, int yMouse) {
+            return JecaGui.mouseIn(-21, 0, 24, 24, xMouse, yMouse);
+        }
+
+        @Override
+        public boolean onClicked(JecaGui gui, int xMouse, int yMouse, int button) {
+            boolean ret = mouseIn(xMouse, yMouse);
+            if (ret)
+                gui.root.add(new Doc());
+            return ret;
+        }
     }
 
     private class Doc extends WContainer {
+        Text text = new Text();
+        WSwitcher switcher = new WSwitcher(7, 146, 162, text.amount()).setListener(i -> text.setPage(i.getIndex()));
+
         public Doc() {
-            Text tContent = new Text();
-            WSwitcher sPage = new WSwitcher(7, 146, 162, tContent.amount());
-            sPage.setListener(i -> tContent.setPage(i.getIndex()));
-            WText tTitle = new WText(7, 7, SHADOW, I18n.get("gui." + WHelp.this.key + ".title"));
-            addAll(new WPanel(), new Icon(), tTitle, tContent, sPage);
+            WText title = new WText(7, 7, SHADOW, I18n.get("gui." + key + ".title"));
+            add(new WPanel(), new Icon(), title, text, switcher);
         }
 
+
         @Override
         public boolean onClicked(JecaGui gui, int xMouse, int yMouse, int button) {
             if (!super.onClicked(gui, xMouse, yMouse, button))
@@ -61,12 +71,19 @@ public class WHelp extends WTooltip {
             return true;
         }
 
+        @Override
+        public boolean onScroll(JecaGui gui, int xMouse, int yMouse, int diff) {
+            switcher.move(-diff);
+            text.setPage(switcher.getIndex());
+            return super.onScroll(gui, xMouse, yMouse, diff);
+        }
+
         public class Text implements IWidget {
             List<List<String>> pages = new ArrayList<>();
             int page;
 
             public Text() {
-                List<String> ss = I18n.wrap(I18n.get("gui." + WHelp.this.key + ".help"), 162);
+                List<String> ss = I18n.wrap(I18n.get("gui." + key + ".help"), 162);
                 List<String> tmp = new ArrayList<>();
                 int count = 0;
                 for (String s : ss) {
@@ -85,8 +102,7 @@ public class WHelp extends WTooltip {
                         count++;
                     }
                 }
-                if (!tmp.isEmpty())
-                    pages.add(tmp);
+                if (!tmp.isEmpty()) pages.add(tmp);
             }
 
             @Override

src/main/java/me/towdium/jecalculation/gui/widgets/WLabel.java

@@ -31,7 +31,7 @@ import static me.towdium.jecalculation.gui.Resource.BTN_YES;
 @SideOnly(Side.CLIENT)
 public class WLabel implements IWidget {
     public int xPos, yPos, xSize, ySize;
-    public ILabel label;
+    ILabel label;
     public Mode mode;
     public ListenerValue<? super WLabel, ILabel> listener;
     protected Utilities.Timer timer = new Utilities.Timer();
@@ -50,8 +50,9 @@ public class WLabel implements IWidget {
         return label;
     }
 
-    public void setLabel(ILabel label) {
+    public WLabel setLabel(ILabel label) {
         this.label = label;
+        return this;
     }
 
     @Override
@@ -85,13 +86,14 @@ public class WLabel implements IWidget {
 
     @Override
     public boolean onScroll(JecaGui gui, int xMouse, int yMouse, int diff) {
-        if (mouseIn(xMouse, yMouse) && mode == Mode.EDITOR && label != ILabel.EMPTY) {
-            for (int i = 0; i < Math.abs(diff); i++)
-                label = diff > 0 ? label.increaseAmount() : label.decreaseAmount();
-            notifyLsnr();
+        if (mouseIn(xMouse, yMouse)) {
+            if (mode == Mode.EDITOR && label != ILabel.EMPTY) {
+                for (int i = 0; i < Math.abs(diff); i++)
+                    label = diff > 0 ? label.increaseAmount() : label.decreaseAmount();
+                notifyLsnr();
+            }
             return true;
-        } else
-            return false;
+        } else return false;
     }
 
 
@@ -165,59 +167,62 @@ public class WLabel implements IWidget {
 
 
     class WAmount extends WContainer {
+        long old = label.getAmount();
         WButton bAmount = new WButtonText(xPos + xSize + 60, yPos, 20, 20, "general.to_percent", "#")
                 .setListener(i -> setPercent(true));
         WTextField wtf = new WTextField(xPos + xSize + 10, yPos + ySize / 2 - WTextField.HEIGHT / 2, 50);
         WButton bPercent = new WButtonText(xPos + xSize + 60, yPos, 20, 20, "general.to_percent", "%")
                 .setListener(i -> setPercent(false));
         WLabel wl = new WLabel(xPos, yPos, xSize, ySize, Mode.SELECTOR).setListener((i, v) -> update());
-        WButton bYes = new WButtonIcon(xPos + xSize + 83, yPos, 20, 20, BTN_YES).setListener(i -> {
-            setLabel(wl.getLabel().setAmount(
-                    wtf.getText().isEmpty() ? 0 : Integer.parseInt(wtf.getText())));
-            JecaGui.getCurrent().root.remove(this);
-        });
+        WButton bYes = new WButtonIcon(xPos + xSize + 83, yPos, 20, 20, BTN_YES)
+                .setListener(i -> JecaGui.getCurrent().root.remove(this));
         WButton bNo = new WButtonIcon(xPos + xSize + 102, yPos, 20, 20, BTN_NO).setListener(i -> {
             setLabel(ILabel.EMPTY);
             JecaGui.getCurrent().root.remove(this);
         });
 
+
         public WAmount() {
             wl.setLabel(label);
             add(new WPanel(xPos - 5, yPos - 5, xSize + 133, ySize + 10));
             add(new WText(xPos + xSize + 3, yPos + 5, PLAIN, "x"));
-            addAll(wl, wtf, bYes, bNo);
+            add(wl, wtf, bYes, bNo);
             wtf.setListener(i -> {
                 try {
-                    Integer.parseInt(wtf.getText());
+                    long n = Long.parseLong(wtf.getText());
+                    label.setAmount(n);
                     wtf.setColor(COLOR_TEXT_WHITE);
                     bYes.setDisabled(false);
                 } catch (NumberFormatException e) {
                     boolean acceptable = wtf.getText().isEmpty();
                     wtf.setColor(acceptable ? COLOR_TEXT_WHITE : COLOR_TEXT_RED);
                     bYes.setDisabled(!acceptable);
+                    label.setAmount(acceptable ? 1 : old);
                 }
+                notifyLsnr();
             });
             update();
         }
 
         private void update() {
-            label = wl.label;
-            bAmount.setDisabled(!wl.label.acceptPercent());
-            setPercent(label.isPercent());
-        }
-
-        private void setPercent(boolean b) {
-            if (b) {
+            bAmount.setDisabled(!label.acceptPercent());
+            if (label.isPercent()) {
                 remove(bAmount);
                 add(bPercent);
             } else {
                 remove(bPercent);
                 add(bAmount);
             }
-            if (label.acceptPercent()) label.setPercent(b);
             wtf.setText(Long.toString(label.getAmount()));
         }
 
+        private void setPercent(boolean b) {
+            boolean original = label.isPercent();
+            if (label.acceptPercent()) label.setPercent(b);
+            if (b != original) notifyLsnr();
+            update();
+        }
+
         @Override
         public boolean onKey(JecaGui gui, char ch, int code) {
             if (super.onKey(gui, ch, code))

src/main/java/me/towdium/jecalculation/gui/widgets/WLine.java

@@ -6,7 +6,7 @@ import me.towdium.jecalculation.gui.JecaGui;
 import me.towdium.jecalculation.gui.Resource;
 
 import javax.annotation.ParametersAreNonnullByDefault;
-import static me.towdium.jecalculation.gui.Resource.WGT_LINE;
+
 /**
  * Author: towdium
  * Date:   17-8-18.
@@ -14,14 +14,26 @@ import static me.towdium.jecalculation.gui.Resource.WGT_LINE;
 @ParametersAreNonnullByDefault
 @SideOnly(Side.CLIENT)
 public class WLine implements IWidget {
-    public int y;
+    int xPos, yPos, xSize, ySize;
 
     public WLine(int y) {
-        this.y = y;
+        this(7, y, 162, true);
+    }
+
+    public WLine(int xPos, int yPos, int size, boolean horizontal) {
+        this.yPos = yPos;
+        this.xPos = xPos;
+        if (horizontal) {
+            xSize = size;
+            ySize = 2;
+        } else {
+            xSize = 2;
+            ySize = size;
+        }
     }
 
     @Override
     public void onDraw(JecaGui gui, int xMouse, int yMouse) {
-        gui.drawResource(WGT_LINE, 6, y - 1);
+        gui.drawResourceContinuous(Resource.WGT_SLOT, xPos, yPos, xSize, ySize, 1);
     }
 }

src/main/java/me/towdium/jecalculation/gui/widgets/WPage.java

@@ -33,9 +33,9 @@ public class WPage extends WTooltip {
 
     @Override
     public void onDraw(JecaGui gui, int xMouse, int yMouse) {
-        Resource resource = focused ? (index == 0 ? WGT_PAGER_F0 : WGT_PAGER_FN) : WGT_PANEL_N;
-        gui.drawResourceContinuous(resource, index * 24, -21, 24, 25, 4, 4, 4, 4);
-        record.representation.drawLabel(gui, index * 24 + 4, -17, false);
+        Resource resource = focused ? WGT_PAGER_F : WGT_PANEL_N;
+        gui.drawResourceContinuous(resource, index * 24 + 3, -21, 24, 25, 4, 4, 4, 4);
+        record.representation.drawLabel(gui, index * 24 + 7, -17, false);
         super.onDraw(gui, xMouse, yMouse);
     }
 

src/main/java/me/towdium/jecalculation/gui/widgets/WScroll.java

@@ -34,7 +34,7 @@ public class WScroll implements IWidget {
         else drag = false;
 
         gui.drawResourceContinuous(Resource.WGT_SLOT, xPos, yPos, 14, ySize, 3, 3, 3, 3);
-        gui.drawResource(Resource.WGT_SCROLL, xPos + 1, yPos + 1 + current);
+        gui.drawResource(Resource.WGT_SCROLL, xPos, yPos + current);
     }
 
     @Override

src/main/java/me/towdium/jecalculation/gui/widgets/WSwitcher.java

@@ -47,29 +47,29 @@ public class WSwitcher extends WContainer {
         this.yPos = yPos;
         this.keys = keys;
         left = new WButtonIcon(xPos, yPos, SIZE, SIZE, WGT_ARR_L).setListener(i -> {
-            if (temp == null) move(false);
+            if (temp == null) move(-1);
             else setTemp(null);
         });
         right = new WButtonIcon(xPos + xSize - SIZE, yPos, SIZE, SIZE, WGT_ARR_R).setListener(i -> {
-            if (temp == null) move(true);
+            if (temp == null) move(1);
             else setTemp(null);
         });
         wRect = new WRectangle(xPos + SIZE, yPos, xSize - 2 * SIZE, SIZE, COLOR_GUI_GREY);
         wText = new WText(xPos + SIZE, yPos + 2, xSize - 2 * SIZE, SHADOW, "", true);
         index = new Circulator(keys.size());
         refresh();
-        addAll(left, right, wRect, wText);
+        add(left, right, wRect, wText);
     }
 
 
-    protected void move(boolean forward) {
-        if (temp == null) {
-            if (forward)
-                index.move(1);
-            else
-                index.move(-1);
-        } else
+    public void move(int diff) {
+        if (diff == 0) return;
+        if (temp != null) {
             temp = null;
+            if (diff > 0) diff -= 1;
+            else diff += 1;
+        }
+        index.move(diff);
         notifyLsnr();
         refresh();
     }

src/main/java/me/towdium/jecalculation/gui/widgets/WTextField.java

@@ -31,6 +31,10 @@ public class WTextField implements IWidget {
     @Override
     public boolean onClicked(JecaGui gui, int xMouse, int yMouse, int button) {
         textField.mouseClicked(xMouse, yMouse, button);
+        if (textField.isFocused() && button == 1) {
+            textField.setText("");
+            notifyLsnr();
+        }
         return false;
     }
 

src/main/java/me/towdium/jecalculation/gui/widgets/WTick.java

@@ -1,10 +1,12 @@
 package me.towdium.jecalculation.gui.widgets;
 
+import me.towdium.jecalculation.gui.JecaGui;
 import me.towdium.jecalculation.gui.Resource;
 
 import javax.annotation.Nullable;
 import javax.annotation.ParametersAreNonnullByDefault;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.function.Consumer;
 
@@ -57,7 +59,7 @@ public class WTick extends WContainer {
 
     private class Normal extends WButton {
         public Normal(int xPos, int yPos, int xSize, int ySize, @Nullable String name) {
-            super(xPos, yPos, xSize, ySize, name + ".normal");
+            super(xPos, yPos, xSize, ySize, name);
             listener = i -> {
                 setSelected(true);
                 WTick.this.listener.invoke(WTick.this);
@@ -67,13 +69,13 @@ public class WTick extends WContainer {
 
         @Override
         protected List<String> getSuffix() {
-            return new ArrayList<>();
+            return Collections.singletonList("unselected");
         }
     }
 
     private class Selected extends WButton {
         public Selected(int xPos, int yPos, int xSize, int ySize, @Nullable String name) {
-            super(xPos, yPos, xSize, ySize, name + ".selected");
+            super(xPos, yPos, xSize, ySize, name);
             listener = i -> {
                 setSelected(false);
                 WTick.this.listener.invoke(WTick.this);
@@ -81,24 +83,17 @@ public class WTick extends WContainer {
             disabled = WTick.this.disabled;
         }
 
-        @Override
-        protected Resource getDisabled() {
-            return WGT_BUTTON_S_D;
-        }
-
-        @Override
-        protected Resource getNormal() {
-            return WGT_BUTTON_S_N;
-        }
-
-        @Override
-        protected Resource getFocused() {
-            return WGT_BUTTON_S_F;
-        }
-
         @Override
         protected List<String> getSuffix() {
-            return new ArrayList<>();
+            return Collections.singletonList("selected");
+        }
+
+        @Override
+        public void onDraw(JecaGui gui, int xMouse, int yMouse) {
+            super.onDraw(gui, xMouse, yMouse);
+            boolean hovered = JecaGui.mouseIn(xPos + 1, yPos + 1, xSize - 2, ySize - 2, xMouse, yMouse);
+            gui.drawResourceContinuous(disabled ? WGT_BUTTON_S_D : (hovered ? WGT_BUTTON_S_F : WGT_BUTTON_S_N)
+                    , xPos, yPos, xSize, ySize, 5, 5, 5, 5);
         }
     }
 }

src/main/java/me/towdium/jecalculation/polyfill/NBTHelper.java

@@ -34,8 +34,8 @@ public class NBTHelper {
     }
 
     public static Spliterator<NBTBase> spliterator(NBTTagList list) {
-        List tagList = (List) ReflectionHelper.get(list, "tagList");
-        return Spliterators.spliteratorUnknownSize(((List<NBTBase>)tagList).iterator(), 0);
+        List<NBTBase> tagList = (List<NBTBase>) list.tagList;
+        return Spliterators.spliteratorUnknownSize(tagList.iterator(), 0);
     }
 
     public static NBTTagCompound getOrCreateSubCompound(ItemStack itemStack, String key) {

src/main/java/me/towdium/jecalculation/utils/Utilities.java

@@ -75,6 +75,11 @@ public class Utilities {
         };
     }
 
+    public static String repeat(String s, int n) {
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < n; i++) sb.append(s);
+        return sb.toString();
+    }
 
     // MOD NAME
     @Nullable
@@ -312,11 +317,11 @@ public class Utilities {
             this.limit = limit;
         }
 
-        public void push(T obj) {
+        public void push(T obj, boolean replace) {
+            if (replace) data.pop();
             data.removeIf(t -> tester != null ? tester.test(t, obj) : t.equals(obj));
-            data.push(obj);
-            if (data.size() > limit)
-                data.pop();
+            data.addFirst(obj);
+            if (data.size() > limit) data.removeLast();
         }
 
         public List<T> toList() {