106 lines
2.6 KiB
Java
106 lines
2.6 KiB
Java
/*
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* This file is part of Applied Energistics 2.
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* Copyright (c) 2013 - 2015, AlgorithmX2, All rights reserved.
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*
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* Applied Energistics 2 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Applied Energistics 2 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
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*/
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package appeng.core.features;
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import javax.annotation.Nonnull;
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import com.google.common.base.Function;
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import com.google.common.base.Optional;
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import com.google.common.base.Preconditions;
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import net.minecraft.item.Item;
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import net.minecraft.item.ItemStack;
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import appeng.api.definitions.IItemDefinition;
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import appeng.util.Platform;
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public class ItemDefinition implements IItemDefinition
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{
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private final String identifier;
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private final Optional<Item> item;
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public ItemDefinition( String identifier, Item item, ActivityState state )
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{
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this.identifier = Preconditions.checkNotNull( identifier );
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Preconditions.checkArgument( !identifier.isEmpty() );
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Preconditions.checkNotNull( item );
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Preconditions.checkNotNull( state );
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if( state == ActivityState.Enabled )
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{
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this.item = Optional.of( item );
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}
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else
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{
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this.item = Optional.absent();
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}
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}
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@Nonnull
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@Override
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public String identifier()
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{
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return this.identifier;
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}
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@Override
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public final Optional<Item> maybeItem()
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{
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return this.item;
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}
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@Override
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public Optional<ItemStack> maybeStack( int stackSize )
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{
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return this.item.transform( new ItemStackTransformer( stackSize ) );
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}
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@Override
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public boolean isEnabled()
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{
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return this.item.isPresent();
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}
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@Override
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public final boolean isSameAs( ItemStack comparableStack )
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{
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return this.isEnabled() && Platform.isSameItemType( comparableStack, this.maybeStack( 1 ).get() );
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}
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private static class ItemStackTransformer implements Function<Item, ItemStack>
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{
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private final int stackSize;
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public ItemStackTransformer( int stackSize )
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{
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Preconditions.checkArgument( stackSize > 0 );
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this.stackSize = stackSize;
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}
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@Override
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public ItemStack apply( Item input )
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{
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return new ItemStack( input, this.stackSize );
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}
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}
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}
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