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ComponentLike.java
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ComponentLike.java
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/*
* This file is part of adventure, licensed under the MIT License.
*
* Copyright (c) 2017-2021 KyoriPowered
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package net.kyori.adventure.text;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.function.Predicate;
import org.checkerframework.checker.nullness.qual.NonNull;
import org.checkerframework.checker.nullness.qual.Nullable;
import org.jetbrains.annotations.Contract;
/**
* Something that can be represented as a {@link Component}.
*
* @since 4.0.0
*/
@FunctionalInterface
public interface ComponentLike {
/**
* Converts a list of {@link ComponentLike}s to a list of {@link Component}s.
*
* @param likes the component-likes
* @return the components
* @since 4.8.0
*/
static @NonNull List<Component> asComponents(final @NonNull List<? extends ComponentLike> likes) {
return asComponents(likes, null);
}
/**
* Converts a list of {@link ComponentLike}s to a list of {@link Component}s.
*
* <p>Only components that match {@code filter} will be returned.</p>
*
* @param likes the component-likes
* @param filter the component filter
* @return the components
* @since 4.8.0
*/
static @NonNull List<Component> asComponents(final @NonNull List<? extends ComponentLike> likes, final @Nullable Predicate<? super Component> filter) {
if(likes.isEmpty()) {
// We do not need to create a new list if the one we are copying is empty - we can
// simply just return our known-empty list instead.
return Collections.emptyList();
}
final int size = likes.size();
@Nullable ArrayList<Component> components = null;
for(int i = 0; i < size; i++) {
final ComponentLike like = likes.get(i);
final Component component = like.asComponent();
if(filter == null || filter.test(component)) {
if(components == null) {
components = new ArrayList<>(size);
}
components.add(component);
}
}
if(components != null) {
// https://github.com/KyoriPowered/adventure/pull/327/files#r631420264
// we pre-size the list, but filtering might make the actual size much smaller
components.trimToSize();
}
// if we filtered all elements out, just use an empty list instead
if(components == null || components.isEmpty()) return Collections.emptyList();
return Collections.unmodifiableList(components);
}
/**
* Gets a {@link Component} representation.
*
* @return a component
* @since 4.0.0
*/
@Contract(pure = true)
@NonNull Component asComponent();
}