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This also breaks InteractBlockEvent.Secondary and SpawnEntityEvent.Pre
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80
src/main/java/org/spongepowered/api/event/CompositeEvent.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| /* | ||
| * This file is part of SpongeAPI, licensed under the MIT License (MIT). | ||
| * | ||
| * Copyright (c) SpongePowered <https://www.spongepowered.org> | ||
| * Copyright (c) contributors | ||
| * | ||
| * 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 org.spongepowered.api.event; | ||
|
|
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| import org.spongepowered.api.event.impl.AbstractCompositeEvent; | ||
| import org.spongepowered.api.util.annotation.eventgen.GenerateFactoryMethod; | ||
| import org.spongepowered.api.util.annotation.eventgen.ImplementedBy; | ||
| import org.spongepowered.api.util.annotation.eventgen.PropertySettings; | ||
|
|
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| import java.util.List; | ||
| import java.util.function.Consumer; | ||
|
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| /** | ||
| * A {@link CompositeEvent} is an {@link Event} that contains multiple | ||
| * side effectual {@link Event Events}, which may have their own side effects | ||
| * and may be {@link Cancellable}. In some cases, the interactions of this event | ||
| * may be cancellable as a whole, but are not guaranteed to revert all side | ||
| * effects on the {@link org.spongepowered.api.Game}. The {@link #children()} of | ||
| * this event are ordered in a "best-effort" basis, and may not be guaranteed | ||
| * to be in any particular order. | ||
| * <p>Using {@link #setCancelled(boolean)} will perform a best effort cancellation | ||
| * on each of the children events. | ||
| */ | ||
| @GenerateFactoryMethod | ||
| @ImplementedBy(AbstractCompositeEvent.class) | ||
| public interface CompositeEvent<E extends Event> extends Event, Cancellable { | ||
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| E baseEvent(); | ||
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| List<Event> children(); | ||
|
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| default <E extends Event> List<? extends E> event(Class<E> type) { | ||
| return this.children().stream() | ||
| .filter(type::isInstance) | ||
| .map(type::cast) | ||
| .toList(); | ||
| } | ||
|
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| default <E extends Event> void applyTo(Class<E> type, Consumer<? super E> consumer) { | ||
| this.children().stream() | ||
| .filter(type::isInstance) | ||
| .map(type::cast) | ||
| .forEach(consumer); | ||
| } | ||
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| /** | ||
| * {@inheritDoc} | ||
| * | ||
| * Cancels this event and all related events captured {@link #children()}. | ||
| * Selectively, if individual events are wished to be cancelled, | ||
| * the individual events should be cancelled instead. | ||
| * | ||
| * @param cancel The new cancelled state | ||
| */ | ||
| @PropertySettings(generateMethods = false) | ||
| @Override | ||
| void setCancelled(boolean cancel); | ||
| } |
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56 changes: 56 additions & 0 deletions
56
src/main/java/org/spongepowered/api/event/impl/AbstractCompositeEvent.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| /* | ||
| * This file is part of SpongeAPI, licensed under the MIT License (MIT). | ||
| * | ||
| * Copyright (c) SpongePowered <https://www.spongepowered.org> | ||
| * Copyright (c) contributors | ||
| * | ||
| * 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 org.spongepowered.api.event.impl; | ||
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| import org.spongepowered.api.event.Cancellable; | ||
| import org.spongepowered.api.event.CompositeEvent; | ||
| import org.spongepowered.api.event.Event; | ||
| import org.spongepowered.api.util.annotation.eventgen.UseField; | ||
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| import java.util.Collections; | ||
| import java.util.List; | ||
|
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| public abstract class AbstractCompositeEvent<E extends Event> extends AbstractEvent implements CompositeEvent<E> { | ||
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| @UseField(overrideToString = true) | ||
| protected List<Event> children; | ||
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| @UseField | ||
| protected boolean cancelled; | ||
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| public final void postInit() { | ||
| this.children = Collections.unmodifiableList(this.children); | ||
| } | ||
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| @Override | ||
| public void setCancelled(boolean cancel) { | ||
| this.cancelled = cancel; | ||
| this.children().forEach(event -> { | ||
| if (event instanceof Cancellable cancellable) { | ||
| cancellable.setCancelled(cancel); | ||
| } | ||
| }); | ||
| } | ||
| } |