GUIFileOpener.java

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/*
 *   DENOPTIM
 *   Copyright (C) 2020 Marco Foscato <marco.foscato@uib.no>
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU Affero General Public License as published
 *   by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
 *
 *   You should have received a copy of the GNU Affero General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package denoptim.gui;
 
import java.awt.Component;
import java.io.File;
import java.util.HashSet;
import java.util.Set;
 
import javax.swing.JFileChooser;
import javax.swing.JTextField;
import javax.swing.filechooser.FileNameExtensionFilter;
import javax.swing.filechooser.FileSystemView;
 
public class GUIFileOpener 
{
    protected static JFileChooser fileChooser = new JFileChooser(getSystemRoot()); 
    
//-----------------------------------------------------------------------------
    
    private static File getSystemRoot()
    {
        File startFile = new File(System.getProperty("user.dir")); 
        while (!FileSystemView.getFileSystemView().isFileSystemRoot(startFile))
        {
            startFile = startFile.getParentFile();
        }
        return startFile;
    }
    
//-----------------------------------------------------------------------------
 
    public static File pickFileOrFolder(Component parent)
    {
        fileChooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
        fileChooser.setFileHidingEnabled(false);
        File file = null;
        if (fileChooser.showOpenDialog(parent) == JFileChooser.APPROVE_OPTION)
        {
            file = fileChooser.getSelectedFile();
        }
        fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
        return file;
    }
 
//-----------------------------------------------------------------------------
 
    public static File pickFileForTxtField(JTextField txtField, Component parent) 
    {
        File file = pickFile(parent);
        if (file != null)
        {
            txtField.setText(file.getAbsolutePath());
        }
        return file;
    }
    
//-----------------------------------------------------------------------------
 
    public static Set<File> pickManyFiles(Component parent) 
    {
        fileChooser.setMultiSelectionEnabled(true);
        fileChooser.setFileHidingEnabled(false);
        fileChooser.setDialogTitle("Select one or more files");
        Set<File> files = null;
        if (fileChooser.showOpenDialog(parent) == JFileChooser.APPROVE_OPTION)
        {
            files = new HashSet<File>();
            File[] arr = fileChooser.getSelectedFiles();
            for (int i=0; i<arr.length; i++)
            {
                files.add(arr[i]);
            }
        }
        fileChooser.setDialogTitle("Open");
        fileChooser.setMultiSelectionEnabled(false);
        return files;
    }
    
//-----------------------------------------------------------------------------
    
    public static File pickFile(Component parent) 
    {
        fileChooser.resetChoosableFileFilters();
        fileChooser.setFileHidingEnabled(false);
        fileChooser.setAcceptAllFileFilterUsed(true);
        fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
        File file = null;
        if (fileChooser.showOpenDialog(parent) == JFileChooser.APPROVE_OPTION)
        {
            file = fileChooser.getSelectedFile();
        }
        return file;
    }
    
//-----------------------------------------------------------------------------
    
    public static File pickFileWithGraph(Component parent) 
    {
        fileChooser.resetChoosableFileFilters();
        fileChooser.setFileHidingEnabled(false);
        fileChooser.setAcceptAllFileFilterUsed(true);
        FileNameExtensionFilter jsonFilter = new FileNameExtensionFilter(
                "JSON", "json");
        fileChooser.addChoosableFileFilter(jsonFilter);
        FileNameExtensionFilter sdfFilter = new FileNameExtensionFilter(
                "SDF", "sdf");
        fileChooser.addChoosableFileFilter(sdfFilter);
        fileChooser.setAcceptAllFileFilterUsed(true);
        fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
        File file = null;
        if (fileChooser.showOpenDialog(parent) == JFileChooser.APPROVE_OPTION)
        {
            file = fileChooser.getSelectedFile();
        }
        return file;
    }
        
//-----------------------------------------------------------------------------
        
    public static File pickFolderForTxtField(JTextField txtField, 
            Component parent) 
    {
        fileChooser.setFileHidingEnabled(false);
        File file = pickFolder(parent);
        if (file != null)
        {
            txtField.setText(file.getAbsolutePath());
        }
        return file;
    }
    
//-----------------------------------------------------------------------------
    
    public static File pickFolder(Component parent) 
    {
        fileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
        fileChooser.setFileHidingEnabled(false);
        fileChooser.setDialogTitle("Choose Folder to Load");
        File file = null;
        if (fileChooser.showOpenDialog(parent) == JFileChooser.APPROVE_OPTION)
        {
            file = fileChooser.getSelectedFile();
        }
        fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
        fileChooser.setDialogTitle("Open");
        return file;
    }
    
//-----------------------------------------------------------------------------
    
    public static File pickFileForSaving(Component parent) 
    {
        File file;
        fileChooser.setFileHidingEnabled(false);
        if (fileChooser.showSaveDialog(parent) == JFileChooser.APPROVE_OPTION)
        {
            file = fileChooser.getSelectedFile();
        }
        else
        {
            /*
            JOptionPane.showMessageDialog(parent,
                    "Could not save. Try again.",
                    "Error",
                    JOptionPane.ERROR_MESSAGE,
                    UIManager.getIcon("OptionPane.errorIcon"));
                    */
            return null;
        }
        return file;
    }
    
//-----------------------------------------------------------------------------
 
}