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 SortedMap<String, String> properties() {
036        return properties;
037    }
038
039    public void addPropertyChangeListener(final PropertyChangeListener listener) {
040        support.addPropertyChangeListener(listener);
041    }
042
043    protected void firePropertyChange(final String propertyName, final Object oldValue, final Object newValue) {
044        support.firePropertyChange(propertyName, oldValue, newValue);
045    }
046
047    public void removePropertyChangeListener(final PropertyChangeListener listener) {
048        support.removePropertyChangeListener(listener);
049    }
050
051    /**
052     * Completion between 0..1.
053     * 
054     * @param value Completion between 0..1.
055     */
056    protected void completed(final double value) {
057        firePropertyChange("pack.progress", null, String.valueOf((int) (100 * value))); //$NON-NLS-1$
058    }
059}