    001/*
    002 *  Licensed to the Apache Software Foundation (ASF) under one or more
    003 *  contributor license agreements.  See the NOTICE file distributed with
    004 *  this work for additional information regarding copyright ownership.
    005 *  The ASF licenses this file to You under the Apache License, Version 2.0
    006 *  (the "License"); you may not use this file except in compliance with
    007 *  the License.  You may obtain a copy of the License at
    008 *
    009 *     http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 *  Unless required by applicable law or agreed to in writing, software
    012 *  distributed under the License is distributed on an "AS IS" BASIS,
    013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 *  See the License for the specific language governing permissions and
    015 *  limitations under the License.
    016 */
    017package org.apache.commons.compress.harmony.pack200;
    018
    019import java.beans.PropertyChangeListener;
    020import java.beans.PropertyChangeSupport;
    021import java.util.SortedMap;
    022import java.util.TreeMap;
    023
    024/**
    025 * Provides generic JavaBeans support for the Pack/UnpackAdapters
    026 */
    027public abstract class Pack200Adapter {
    028
    029    protected static final int DEFAULT_BUFFER_SIZE = 8192;
    030
    031    private final PropertyChangeSupport support = new PropertyChangeSupport(this);
    032
    033    private final SortedMap<String, String> properties = new TreeMap<>();
    034
    035    public void addPropertyChangeListener(final PropertyChangeListener listener) {
    036        support.addPropertyChangeListener(listener);
    037    }
    038
    039    /**
    040     * Completion between 0..1.
    041     *
    042     * @param value Completion between 0..1.
    043     */
    044    protected void completed(final double value) {
    045        firePropertyChange("pack.progress", null, String.valueOf((int) (100 * value))); //$NON-NLS-1$
    046    }
    047
    048    protected void firePropertyChange(final String propertyName, final Object oldValue, final Object newValue) {
    049        support.firePropertyChange(propertyName, oldValue, newValue);
    050    }
    051
    052    public SortedMap<String, String> properties() {
    053        return properties;
    054    }
    055
    056    public void removePropertyChangeListener(final PropertyChangeListener listener) {
    057        support.removePropertyChangeListener(listener);
    058    }
    059}