com.playonlinux.utils.AbstractObservableDirectory.java Source code

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Here is the source code for com.playonlinux.utils.AbstractObservableDirectory.java

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/*
 * Copyright (C) 2015 PRIS Quentin
 *
 * 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 com.playonlinux.utils;

import com.playonlinux.common.api.services.BackgroundService;
import com.playonlinux.domain.PlayOnLinuxException;
import org.apache.commons.lang.builder.ToStringBuilder;

import java.io.File;
import java.util.Observable;

public abstract class AbstractObservableDirectory extends Observable implements BackgroundService {
    protected int checkInterval = 1000;
    protected File observedDirectory;

    protected void validate() throws PlayOnLinuxException {
        if (!observedDirectory.exists()) {
            throw new PlayOnLinuxException(
                    String.format("The directory %s does not exist", observedDirectory.toString()));
        }
        if (!observedDirectory.isDirectory()) {
            throw new PlayOnLinuxException(
                    String.format("The file %s is not a valid directory", observedDirectory.toString()));
        }
    }

    public void setCheckInterval(int checkInterval) {
        this.checkInterval = checkInterval;
    }

    @Override
    public abstract void start();

    public abstract void stop();

    public File getObservedDirectory() {
        return observedDirectory;
    }

    public String toString() {
        return new ToStringBuilder(this).append(observedDirectory.getName()).append(checkInterval).toString();
    }

    @Override
    public void shutdown() {
        this.stop();
    }

}