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- /*
- * Copyright (c) 2006-2014 DMDirc Developers
- *
- * 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 com.dmdirc.commandparser.auto;
-
- import java.util.Collections;
- import java.util.Map;
- import java.util.Set;
- import java.util.concurrent.ConcurrentSkipListMap;
-
- import javax.inject.Inject;
- import javax.inject.Singleton;
-
- import com.dmdirc.DMDircMBassador;
-
- import static com.google.common.base.Preconditions.checkNotNull;
-
- /**
- * Manages {@link AutoCommand}s.
- */
- @Singleton
- public class AutoCommandManager {
-
- /** The bus to listen for events on. */
- private final DMDircMBassador eventBus;
- /** The factory to use to create handlers. */
- private final AutoCommandHandlerFactory factory;
- /** Known auto commands, mapped on to their handlers. */
- private final Map<AutoCommand, AutoCommandHandler> autoCommands = new ConcurrentSkipListMap<>();
- /** Whether the manager has been started or not. */
- private boolean started;
-
- /**
- * Creates a new instance of {@link AutoCommandManager}.
- *
- * @param eventBus The bus to listen to events on.
- * @param factory The factory to use to create handlers.
- */
- @Inject
- public AutoCommandManager(final DMDircMBassador eventBus, final AutoCommandHandlerFactory factory) {
- this.eventBus = eventBus;
- this.factory = factory;
- }
-
- /**
- * Starts handling events and triggering auto commands.
- */
- public void start() {
- started = true;
- for (AutoCommandHandler handler : autoCommands.values()) {
- eventBus.subscribe(handler);
- }
- }
-
- /**
- * Stops handling events and triggering auto commands.
- */
- public void stop() {
- started = false;
- for (AutoCommandHandler handler : autoCommands.values()) {
- eventBus.subscribe(handler);
- }
- }
-
- /**
- * Adds an auto command to this manager.
- *
- * @param autoCommand The command to be added.
- */
- public void addAutoCommand(final AutoCommand autoCommand) {
- checkNotNull(autoCommand);
- final AutoCommandHandler handler = factory.getAutoCommandHandler(autoCommand);
-
- if (started) {
- eventBus.subscribe(handler);
- }
-
- autoCommands.put(autoCommand, handler);
- }
-
- /**
- * Removes an existing auto command from this manager.
- *
- * @param autoCommand The command to be removed.
- */
- public void removeAutoCommand(final AutoCommand autoCommand) {
- checkNotNull(autoCommand);
- final AutoCommandHandler handler = autoCommands.remove(autoCommand);
-
- if (started) {
- eventBus.subscribe(handler);
- }
- }
-
- /**
- * Gets a set of all registered auto commands.
- *
- * @return The set of all known auto commands.
- */
- public Set<AutoCommand> getAutoCommands() {
- return Collections.unmodifiableSet(autoCommands.keySet());
- }
-
- }
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