org.bukkit.craftbukkit.conversations.ConversationTracker Maven / Gradle / Ivy

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package org.bukkit.craftbukkit.conversations;

import org.bukkit.Bukkit;
import org.bukkit.conversations.Conversation;
import org.bukkit.conversations.ConversationAbandonedEvent;
import org.bukkit.conversations.ManuallyAbandonedConversationCanceller;

import java.util.LinkedList;
import java.util.logging.Level;

/**
 *
 */
public class ConversationTracker {

  private LinkedList conversationQueue = new LinkedList();

  public synchronized boolean beginConversation(Conversation conversation) {
    if (!conversationQueue.contains(conversation)) {
      conversationQueue.addLast(conversation);
      if (conversationQueue.getFirst() == conversation) {
        conversation.begin();
        conversation.outputNextPrompt();
        return true;
      }
    }
    return true;
  }

  public synchronized void abandonConversation(Conversation conversation, ConversationAbandonedEvent details) {
    if (!conversationQueue.isEmpty()) {
      if (conversationQueue.getFirst() == conversation) {
        conversation.abandon(details);
      }
      conversationQueue.remove(conversation);
      if (!conversationQueue.isEmpty()) {
        conversationQueue.getFirst().outputNextPrompt();
      }
    }
  }

  public synchronized void abandonAllConversations() {

    LinkedList oldQueue = conversationQueue;
    conversationQueue = new LinkedList();
    for (Conversation conversation : oldQueue) {
      try {
        conversation.abandon(new ConversationAbandonedEvent(conversation, new ManuallyAbandonedConversationCanceller()));
      } catch (Throwable t) {
        Bukkit.getLogger().log(Level.SEVERE, "Unexpected exception while abandoning a conversation", t);
      }
    }
  }

  public synchronized void acceptConversationInput(String input) {
    if (isConversing()) {
      conversationQueue.getFirst().acceptInput(input);
    }
  }

  public synchronized boolean isConversing() {
    return !conversationQueue.isEmpty();
  }

  public synchronized boolean isConversingModaly() {
    return isConversing() && conversationQueue.getFirst().isModal();
  }
}