/*******************************************************************************
 * PGPTool is a desktop application for pgp encryption/decryption
 * Copyright (C) 2019 Sergey Karpushin
 * 
 * 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 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 ******************************************************************************/
package org.pgptool.gui.ui.tools.browsefs;

import java.awt.event.ActionEvent;
import java.io.File;

import javax.swing.JFileChooser;

import org.pgptool.gui.app.Messages;
import org.pgptool.gui.ui.tools.UiUtils;

import ru.skarpushin.swingpm.valueadapters.ValueAdapter;

public class FolderChooserDialog {
	private ValueAdapter<String> optionalRecentlyUsedFolder;
	private String title;

	public FolderChooserDialog(String optionalTitle, ValueAdapter<String> optionalRecentlyUsedFolder) {
		this.title = optionalTitle != null ? optionalTitle : Messages.get("term.selectFolder");
		this.optionalRecentlyUsedFolder = optionalRecentlyUsedFolder;
	}

	public String askUserForFolder(ActionEvent originEvent) {
		JFileChooser ofd = new JFileChooser();
		ofd.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
		ofd.setAcceptAllFileFilterUsed(true);
		ofd.setMultiSelectionEnabled(false);
		ofd.setDialogTitle(title);
		ofd.setApproveButtonText(Messages.get("action.choose"));
		onPostConstruct(ofd);

		int result = ofd.showOpenDialog(UiUtils.findWindow(originEvent));
		if (result != JFileChooser.APPROVE_OPTION) {
			return onFolderChosen(null);
		}

		File retFile = ofd.getSelectedFile();
		if (retFile == null) {
			return onFolderChosen(null);
		}

		String ret = retFile.getAbsolutePath();
		return onFolderChosen(ret);
	}

	protected void onPostConstruct(JFileChooser ofd) {
		if (optionalRecentlyUsedFolder != null) {
			String startFolder = optionalRecentlyUsedFolder.getValue();
			if (startFolder != null) {
				ofd.setCurrentDirectory(new File(startFolder));
				ofd.setSelectedFile(new File(startFolder));
			}
		}
	}

	protected String onFolderChosen(String folder) {
		if (folder != null && optionalRecentlyUsedFolder != null) {
			optionalRecentlyUsedFolder.setValue(folder);
		}
		return folder;
	}
}