AbstractPathParameter.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 net.sf.gridarta.model.archetype.Archetype;
import net.sf.gridarta.model.gameobject.GameObject;
import net.sf.gridarta.model.io.PathManagerUtils;
import net.sf.gridarta.model.maparchobject.MapArchObject;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

public abstract class AbstractPathParameter<G extends GameObject<G, A, R>, A extends MapArchObject<A>, R extends Archetype<G, A, R>> extends AbstractStringPluginParameter<G, A, R, File> {

    @NotNull
    private final File baseDir;

    protected AbstractPathParameter(@NotNull final File baseDir) {
        super("");
        this.baseDir = baseDir;
    }

    @NotNull
    public File getBaseDir() {
        return baseDir;
    }

    public void setFile(@NotNull final File file) {
        setStringValue(PathManagerUtils.getMapPath(file, baseDir));
    }

    @NotNull
    @Override
    public File getValue() throws InvalidValueException {
        final String stringValue = getStringValue();
        if (stringValue.isEmpty()) {
            throw new InvalidValueException("not value specified");
        }
        final File file = new File(stringValue);
        if (!file.exists()) {
            throw new InvalidValueException("file does not exist: " + stringValue);
        }
        return file;
    }

    @Nullable
    @Override
    public File getValueOrNull() {
        try {
            return getValue();
        } catch (final InvalidValueException ignored) {
            return null;
        }
    }

}