Add covers to JEI.

src/main/java/com/raoulvdberge/refinedstorage/RS.java

@@ -1,8 +1,10 @@
 package com.raoulvdberge.refinedstorage;
 
 import com.raoulvdberge.refinedstorage.command.CommandCreateDisk;
+import com.raoulvdberge.refinedstorage.item.ItemCover;
 import com.raoulvdberge.refinedstorage.proxy.ProxyCommon;
 import net.minecraft.creativetab.CreativeTabs;
+import net.minecraft.init.Blocks;
 import net.minecraft.item.ItemStack;
 import net.minecraftforge.fluids.FluidRegistry;
 import net.minecraftforge.fml.common.FMLLog;
@@ -40,6 +42,16 @@ public final class RS {
             return new ItemStack(RSItems.STORAGE_HOUSING);
         }
     };
+    public final CreativeTabs coversTab = new CreativeTabs(ID + ".covers") {
+        @Override
+        public ItemStack getTabIconItem() {
+            ItemStack stack = new ItemStack(RSItems.COVER);
+
+            ItemCover.setItem(stack, new ItemStack(Blocks.STONE));
+
+            return stack;
+        }
+    };
 
     @EventHandler
     public void preInit(FMLPreInitializationEvent e) {

src/main/java/com/raoulvdberge/refinedstorage/apiimpl/network/node/cover/CoverManager.java

@@ -7,6 +7,8 @@ import com.raoulvdberge.refinedstorage.apiimpl.network.node.ICoverable;
 import com.raoulvdberge.refinedstorage.apiimpl.network.node.NetworkNode;
 import com.raoulvdberge.refinedstorage.item.ItemCover;
 import net.minecraft.block.Block;
+import net.minecraft.block.BlockGlass;
+import net.minecraft.block.BlockStainedGlass;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.init.Blocks;
 import net.minecraft.item.ItemStack;
@@ -138,7 +140,7 @@ public class CoverManager {
 
         IBlockState state = getBlockState(item);
 
-        return block != null && state != null && isModelSupported(state) && block.isTopSolid(state) && !block.getTickRandomly() && !block.hasTileEntity(state);
+        return block != null && state != null && ((isModelSupported(state) && block.isTopSolid(state) && !block.getTickRandomly() && !block.hasTileEntity(state)) || block instanceof BlockGlass || block instanceof BlockStainedGlass);
     }
 
     private static boolean isModelSupported(IBlockState state) {

src/main/java/com/raoulvdberge/refinedstorage/item/ItemCover.java

@@ -1,18 +1,26 @@
 package com.raoulvdberge.refinedstorage.item;
 
+import com.raoulvdberge.refinedstorage.RS;
+import com.raoulvdberge.refinedstorage.RSItems;
 import com.raoulvdberge.refinedstorage.api.network.node.INetworkNode;
 import com.raoulvdberge.refinedstorage.api.network.security.Permission;
 import com.raoulvdberge.refinedstorage.apiimpl.network.node.ICoverable;
+import com.raoulvdberge.refinedstorage.apiimpl.network.node.cover.CoverManager;
 import com.raoulvdberge.refinedstorage.tile.TileNode;
 import com.raoulvdberge.refinedstorage.util.WorldUtils;
+import net.minecraft.block.Block;
 import net.minecraft.client.util.ITooltipFlag;
+import net.minecraft.creativetab.CreativeTabs;
 import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.init.Items;
+import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.EnumActionResult;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumHand;
+import net.minecraft.util.NonNullList;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
 
@@ -25,6 +33,8 @@ public class ItemCover extends ItemBase {
 
     public ItemCover() {
         super("cover");
+
+        setCreativeTab(RS.INSTANCE.coversTab);
     }
 
     public static void setItem(ItemStack cover, ItemStack item) {
@@ -55,6 +65,35 @@ public class ItemCover extends ItemBase {
         }
     }
 
+    @Override
+    public void getSubItems(CreativeTabs tab, NonNullList<ItemStack> items) {
+        if (!isInCreativeTab(tab)) {
+            return;
+        }
+
+        for (Block block : Block.REGISTRY) {
+            Item item = Item.getItemFromBlock(block);
+
+            if (item == Items.AIR) {
+                continue;
+            }
+
+            NonNullList<ItemStack> subBlocks = NonNullList.create();
+
+            block.getSubBlocks(CreativeTabs.SEARCH, subBlocks);
+
+            for (ItemStack subBlock : subBlocks) {
+                if (CoverManager.isValidCover(subBlock)) {
+                    ItemStack stack = new ItemStack(RSItems.COVER);
+
+                    setItem(stack, subBlock);
+
+                    items.add(stack);
+                }
+            }
+        }
+    }
+
     @Override
     public EnumActionResult onItemUse(EntityPlayer player, World world, BlockPos pos, EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ) {
         ItemStack stack = player.getHeldItem(hand);

src/main/resources/assets/refinedstorage/lang/en_us.lang

@@ -1,4 +1,5 @@
 itemGroup.refinedstorage=Refined Storage
+itemGroup.refinedstorage.covers=Refined Storage Covers
 
 key.refinedstorage.focusSearchBar=Focus Grid Search Bar
 key.refinedstorage.clearGridCraftingMatrix=Clear Grid Crafting Matrix