Fixes #117 "a way to clear patterns"

CHANGELOG.md

@@ -8,6 +8,7 @@
 **Features**
 - Added shift clicking support to every inventory (for upgrades etc)
 - Added grid filtering options: @ for searching on mod items, # for searching on tooltips
+- Added a way to clear patterns (shift + right click in inventory)
 - Tweaked some recipes
 - Tweaked energy usage in some machines
 

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

@@ -6,8 +6,13 @@ import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.nbt.NBTTagList;
+import net.minecraft.util.ActionResult;
+import net.minecraft.util.EnumActionResult;
+import net.minecraft.util.EnumHand;
 import net.minecraft.util.text.TextFormatting;
+import net.minecraft.world.World;
 import net.minecraftforge.common.util.Constants;
+import refinedstorage.RefinedStorageItems;
 import refinedstorage.RefinedStorageUtils;
 
 import java.util.List;
@@ -37,6 +42,15 @@ public class ItemPattern extends ItemBase {
         }
     }
 
+    @Override
+    public ActionResult<ItemStack> onItemRightClick(ItemStack stack, World world, EntityPlayer player, EnumHand hand) {
+        if (!world.isRemote && player.isSneaking()) {
+            return new ActionResult(EnumActionResult.SUCCESS, new ItemStack(RefinedStorageItems.PATTERN));
+        }
+
+        return new ActionResult(EnumActionResult.PASS, stack);
+    }
+
     public static void addInput(ItemStack pattern, ItemStack stack) {
         add(pattern, stack, NBT_INPUTS);
     }