+++ /dev/null
-/*
- * rhynodge - NewComicTrigger.java - Copyright © 2013 David Roden
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package net.pterodactylus.rhynodge.triggers;
-
-import java.util.ArrayList;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Set;
-
-import net.pterodactylus.rhynodge.State;
-import net.pterodactylus.rhynodge.Trigger;
-import net.pterodactylus.rhynodge.states.ComicState;
-import net.pterodactylus.rhynodge.states.ComicState.Comic;
-
-import static com.google.common.base.Preconditions.checkArgument;
-
-/**
- * {@link Trigger} implementation that detects the presence of new {@link
- * Comic}s in a {@link ComicState}.
- *
- * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
- */
-public class NewComicTrigger implements Trigger {
-
- private boolean triggered = false;
-
- @Override
- public State mergeStates(State previousState, State currentState) {
- checkArgument(previousState instanceof ComicState, "previous state must be a comic state");
- checkArgument(currentState instanceof ComicState, "current state must be a comic state");
-
- ComicState previousComicState = (ComicState) previousState;
- ComicState currentComicState = (ComicState) currentState;
-
- List<Comic> allComics = new ArrayList<>(previousComicState.comics());
- Set<Comic> newComics = new HashSet<>();
-
- for (Comic comic : currentComicState) {
- if (!allComics.contains(comic)) {
- allComics.add(comic);
- newComics.add(comic);
- triggered = true;
- }
- }
-
- return new ComicState(allComics, newComics);
- }
-
- @Override
- public boolean triggers() {
- return triggered;
- }
-
-}