/*
Copyright 2008-2010 Gephi
Authors : Mathieu Bastian <mathieu.bastian@gephi.org>
Website : http://www.gephi.org

This file is part of Gephi.

DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

Copyright 2011 Gephi Consortium. All rights reserved.

The contents of this file are subject to the terms of either the GNU
General Public License Version 3 only ("GPL") or the Common
Development and Distribution License("CDDL") (collectively, the
"License"). You may not use this file except in compliance with the
License. You can obtain a copy of the License at
http://gephi.org/about/legal/license-notice/
or /cddl-1.0.txt and /gpl-3.0.txt. See the License for the
specific language governing permissions and limitations under the
License.  When distributing the software, include this License Header
Notice in each file and include the License files at
/cddl-1.0.txt and /gpl-3.0.txt. If applicable, add the following below the
License Header, with the fields enclosed by brackets [] replaced by
your own identifying information:
"Portions Copyrighted [year] [name of copyright owner]"

If you wish your version of this file to be governed by only the CDDL
or only the GPL Version 3, indicate your decision by adding
"[Contributor] elects to include this software in this distribution
under the [CDDL or GPL Version 3] license." If you do not indicate a
single choice of license, a recipient has the option to distribute
your version of this file under either the CDDL, the GPL Version 3 or
to extend the choice of license to its licensees as provided above.
However, if you add GPL Version 3 code and therefore, elected the GPL
Version 3 license, then the option applies only if the new code is
made subject to such option by the copyright holder.

Contributor(s):

Portions Copyrighted 2011 Gephi Consortium.
*/

package org.gephi.ui.utils;

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import java.util.logging.Logger;

/**
 * File filters for the open and save system dialog.
 *
 * @author Mathieu Bastian
 */
public class DialogFileFilter extends javax.swing.filechooser.FileFilter
{

	private String description;
	private List<String> extensions;

	public DialogFileFilter(String description)
	{
		if(description == null)
		{
			Logger.getLogger(DialogFileFilter.class.getName()).throwing(getClass().getName(), "constructor", new NullPointerException("Description cannot be null."));
		}
		this.description = description;
		this.extensions = new ArrayList<>();
	}

	@Override
	public boolean accept(File file)
	{
		if(file.isDirectory() || extensions.isEmpty()) {
			return true;
		}
		String fileName = file.getName().toLowerCase();
		for(String extension : extensions){
			if(fileName.endsWith(extension)){
				return true;
			}
		}
		return false;
	}
	@Override
	public String getDescription(){
		StringBuffer buffer = new StringBuffer(description);
		buffer.append(" (");
		for(String extension : extensions){
			buffer.append("*"+extension).append(" ");
		}
		buffer.deleteCharAt(buffer.length()-1);
		return buffer.append(")").toString();
	}


	public void setDescription(String description){
		if(description == null)
		{
            Logger.getLogger(DialogFileFilter.class.getName()).throwing(getClass().getName(), "setDescription", new NullPointerException("Description cannot be null."));
		}
		this.description = description;
	}


	public void addExtension(String extension){
		if(extension == null)
		{
            Logger.getLogger(DialogFileFilter.class.getName()).throwing(getClass().getName(), "addExtension", new NullPointerException("Description cannot be null."));
		}
		extensions.add(extension);
	}

    public void addExtensions(String[] extension){
		if(extension == null)
		{
            Logger.getLogger(DialogFileFilter.class.getName()).throwing(getClass().getName(), "addExtensions", new NullPointerException("Description cannot be null."));
		}
		for(int i=0;i<extension.length;i++)
        {
            extensions.add(extension[i]);
        }
	}

	public void removeExtension(String extension)
	{
		extensions.remove(extension);
	}


	public void clearExtensions(){
		extensions.clear();
	}


	public List<String> getExtensions(){
		return extensions;
	}

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final DialogFileFilter other = (DialogFileFilter) obj;
        if (!Objects.equals(this.description, other.description)) {
            return false;
        }
        if (!Objects.equals(this.extensions, other.extensions)) {
            return false;
        }
        return true;
    }

    @Override
    public int hashCode() {
        int hash = 3;
        hash = 43 * hash + Objects.hashCode(this.description);
        hash = 43 * hash + Objects.hashCode(this.extensions);
        return hash;
    }

    //TODO define hashCode
}


