MapParameter.java

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/*
 * Gridarta MMORPG map editor for Crossfire, Daimonin and similar games.
 * Copyright (C) 2000-2015 The Gridarta Developers.
 *
 * 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 2 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, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

package net.sf.gridarta.plugin.parameter;

import java.io.File;
import java.io.IOException;
import net.sf.gridarta.model.archetype.Archetype;
import net.sf.gridarta.model.gameobject.GameObject;
import net.sf.gridarta.model.io.PathManager;
import net.sf.gridarta.model.maparchobject.MapArchObject;
import net.sf.gridarta.model.mapcontrol.MapControl;
import net.sf.gridarta.model.mapmanager.MapManager;
import net.sf.gridarta.model.mapmodel.MapFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

public class MapParameter<G extends GameObject<G, A, R>, A extends MapArchObject<A>, R extends Archetype<G, A, R>> extends AbstractStringPluginParameter<G, A, R, MapControl<G, A, R>> {

    @NotNull
    public static final String PARAMETER_TYPE = MapControl.class.getName();

    @NotNull
    private static final String CURRENT_MAP = "[Current Map]";

    @NotNull
    private final MapManager<G, A, R> mapManager;

    @NotNull
    private final PathManager pathManager;

    public MapParameter(@NotNull final MapManager<G, A, R> mapManager, @NotNull final PathManager pathManager) {
        super(""); // XXX
        this.mapManager = mapManager;
        this.pathManager = pathManager;
    }

    @NotNull
    @Override
    public String getParameterType() {
        return PARAMETER_TYPE;
    }

    @NotNull
    @Override
    public <T> T visit(@NotNull final PluginParameterVisitor<G, A, R, T> visitor) {
        return visitor.visit(this);
    }

    @NotNull
    @Override
    public MapControl<G, A, R> getValue() throws InvalidValueException {
        final String stringValue = getStringValue();
        if (CURRENT_MAP.equals(stringValue)) {
            final MapControl<G, A, R> currentMap = mapManager.getCurrentMap();
            if (currentMap == null) {
                throw new InvalidValueException("no map is opened");
            }
            currentMap.acquire(); // XXX: this causes a leak
            return currentMap;
        }

        final MapFile mapFile = pathManager.getMapFile(new File(stringValue));
        final MapControl<G, A, R> mapControl;
        try {
            mapControl = mapManager.openMapFile(mapFile, false);
        } catch (final IOException ex) {
            throw new InvalidValueException("map " + stringValue + " does not exist: " + ex.getMessage(), ex);
        }
        return mapControl;
    }

    @Nullable
    @Override
    public MapControl<G, A, R> getValueOrNull() {
        try {
            return getValue();
        } catch (final InvalidValueException ignored) {
            return null;
        }
    }

    public void setValueToCurrent() {
        setStringValue(CURRENT_MAP);
    }

    public boolean isCurrentMap() {
        return getStringValue().equals(CURRENT_MAP);
    }

}