MarkedItemWatcher.java

Go to the documentation of this file.

/*
 * This file is part of JXClient, the Fullscreen Java Crossfire Client.
 *
 * JXClient 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 2 of the License, or
 * (at your option) any later version.
 *
 * JXClient 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 JXClient; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Copyright (C) 2005-2008 Yann Chachkoff
 * Copyright (C) 2006-2017,2019-2023 Andreas Kirschbaum
 * Copyright (C) 2010-2012,2014-2018,2020-2023 Nicolas Weeger
 */
 
package com.realtime.crossfire.jxclient.stats;
 
import com.realtime.crossfire.jxclient.items.CfItem;
import com.realtime.crossfire.jxclient.items.ItemListener;
import com.realtime.crossfire.jxclient.items.ItemSet;
import com.realtime.crossfire.jxclient.items.ItemSetListener;
import com.realtime.crossfire.jxclient.server.crossfire.CrossfireDrawextinfoListener;
import com.realtime.crossfire.jxclient.server.crossfire.CrossfireServerConnection;
import com.realtime.crossfire.jxclient.server.crossfire.SentPacketListener;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
 
public class MarkedItemWatcher {
 
    @NotNull
    private static final String MARK_MESSAGE = "Marked item ";
 
    @NotNull
    private final ItemSet itemSet;
 
    @SuppressWarnings("FieldAccessedSynchronizedAndUnsynchronized")
    private int currentPlayerTag;
 
    @NotNull
    private final Object sync = new Object();
 
    private int pendingMarkedTag = -1;
 
    @NotNull
    @SuppressWarnings("FieldCanBeLocal")
    private final CrossfireDrawextinfoListener drawextinfoListener = new CrossfireDrawextinfoListener() {
 
        @Override
        public void commandDrawextinfoReceived(final int color, final int type, final int subtype, @NotNull final String message) {
            check(message);
        }
 
        @Override
        public void setDebugMode(final boolean printMessageTypes) {
            // ignore
        }
 
    };
 
    @NotNull
    @SuppressWarnings("FieldCanBeLocal")
    private final SentPacketListener sentPacketListener = new SentPacketListener() {
 
        @Override
        public void markSent(final int tag) {
            synchronized (sync) {
                pendingMarkedTag = tag;
            }
        }
 
        @Override
        public void replySent() {
            // ignore
        }
 
    };
 
    @NotNull
    @SuppressWarnings("FieldCanBeLocal")
    private final ItemSetListener itemSetListener = new ItemSetListener() {
 
        @Override
        public void playerChanged(@Nullable final CfItem player) {
            setCurrentPlayerTag(player == null ? -1 : player.getTag());
        }
 
        @Override
        public void openContainerChanged(final int tag) {
            // ignore
        }
 
    };
 
    @NotNull
    private final ItemListener playerInventoryListener = new ItemListener() {
 
        @Override
        public void itemChanged(final int tag) {
            if (tag != currentPlayerTag) {
                throw new IllegalArgumentException("tag="+tag+" but expecting currentPlayerTag="+currentPlayerTag);
            }
            setCurrentPlayerTag(currentPlayerTag);
        }
 
        @Override
        public void itemRemoved(final int tag) {
            // ignore; will be detected by itemSetListener
        }
 
        @Override
        public void inventoryAdded(final int tag, final int index, @NotNull final CfItem item) {
            if (tag != currentPlayerTag) {
                throw new IllegalArgumentException("tag="+tag+" but expecting currentPlayerTag="+currentPlayerTag);
            }
            setCurrentPlayerTag(currentPlayerTag);
        }
 
        @Override
        public void inventoryRemoved(final int tag, final int index) {
            if (tag != currentPlayerTag) {
                throw new IllegalArgumentException("tag="+tag+" but expecting currentPlayerTag="+currentPlayerTag);
            }
            setCurrentPlayerTag(currentPlayerTag);
        }
 
    };
 
    public MarkedItemWatcher(@NotNull final ItemSet itemSet, @NotNull final CrossfireServerConnection crossfireServerConnection) {
        this.itemSet = itemSet;
        crossfireServerConnection.addCrossfireDrawinfoListener((text, type) -> check(text));
        crossfireServerConnection.addCrossfireDrawextinfoListener(drawextinfoListener);
        crossfireServerConnection.addSentPacketListener(sentPacketListener);
        itemSet.addItemSetListener(itemSetListener);
        final CfItem player = itemSet.getPlayer();
        currentPlayerTag = player == null ? -1 : player.getTag();
    }
 
    private void check(@NotNull final String message) {
        synchronized (sync) {
            if (message.startsWith(MARK_MESSAGE)) {
                if (pendingMarkedTag != -1) {
                    itemSet.setMarkedItemTag(pendingMarkedTag);
                    pendingMarkedTag = -1;
                }
            }
        }
    }
 
    private void setCurrentPlayerTag(final int currentPlayerTag) {
        if (this.currentPlayerTag != currentPlayerTag) {
            if (this.currentPlayerTag != -1) {
                itemSet.removeInventoryListener(this.currentPlayerTag, playerInventoryListener);
            }
            this.currentPlayerTag = currentPlayerTag;
            if (this.currentPlayerTag != -1) {
                itemSet.addInventoryListener(this.currentPlayerTag, playerInventoryListener);
            }
        }
    }
 
}