FileNamesEditor.java

/*
 * Copyright 2006-2016 The MZmine 3 Development Team
 * 
 * This file is part of MZmine 3.
 * 
 * MZmine 3 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 2 of the
 * License, or (at your option) any later version.
 * 
 * MZmine 3 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 MZmine 3; if not,
 * write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
 * USA
 */

package io.github.mzmine.parameters.parametertypes.filenames;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;

import javax.annotation.Nullable;

import org.controlsfx.control.PropertySheet;

import io.github.mzmine.parameters.ParameterEditor;
import javafx.geometry.Insets;
import javafx.scene.Node;
import javafx.scene.control.Button;
import javafx.scene.control.Control;
import javafx.scene.control.TextArea;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.VBox;
import javafx.stage.FileChooser;
import javafx.stage.Window;

/**
 * This parameter stores filenames
 */
public class FileNamesEditor extends BorderPane implements ParameterEditor<List<File>> {

  private final FileNamesParameter fileNamesParameter;
  private final TextArea textArea;
  private final Button browseButton, clearButton;

  public FileNamesEditor(PropertySheet.Item parameter) {
    if (!(parameter instanceof FileNamesParameter))
      throw new IllegalArgumentException();

    this.fileNamesParameter = (FileNamesParameter) parameter;

    // The text area
    this.textArea = new TextArea();
    textArea.setPrefHeight(100);
    setCenter(textArea);

    // The Add button
    browseButton = new Button("Browse");
    browseButton.setFocusTraversable(false);
    browseButton.setOnAction(e -> {
      List<FileChooser.ExtensionFilter> extensions = fileNamesParameter.getExtensions();
      FileChooser fileChooser = new FileChooser();
      File lastOpenPath = fileNamesParameter.getLastOpenPath();
      if ((lastOpenPath != null) && (lastOpenPath.isDirectory()))
        fileChooser.setInitialDirectory(lastOpenPath);
      fileChooser.setTitle("Open files");
      fileChooser.getExtensionFilters().addAll(extensions);
      Window parentWindow = this.getScene().getWindow();
      List<File> selectedFiles = fileChooser.showOpenMultipleDialog(parentWindow);
      if (selectedFiles != null) {
        for (File f : selectedFiles) {
          if ((textArea.getLength() > 0) && (!textArea.getText().endsWith("\n")))
            textArea.appendText("\n");
          textArea.appendText(f.getPath());
          File parentDir = f.getParentFile();
          fileNamesParameter.setLastOpenPath(parentDir);
        }
      }

    });

    // The Clear button
    clearButton = new Button("Clear");
    clearButton.setOnAction(e -> {
      textArea.clear();
    });

    // The button bar
    VBox bar = new VBox(10);
    bar.getChildren().addAll(browseButton, clearButton);
    setRight(bar);
    setMargin(bar, new Insets(10.0));

  }

  @Override
  public Node getEditor() {
    return this;
  }

  @Override
  public List<File> getValue() {
    List<File> list = new ArrayList<>();
    String text = textArea.getText();
    BufferedReader reader = new BufferedReader(new StringReader(text));
    String line;
    try {
      while ((line = reader.readLine()) != null) {
        // Skip lines that only contain whitespace
        if (line.trim().length() == 0)
          continue;
        File f = new File(line);
        list.add(f);
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
    return list;
  }

  @Override
  public void setValue(List<File> value) {
    textArea.clear();
    if (value != null) {
      for (File f : value) {
        textArea.appendText(f.getPath() + "\n");
      }
    }
  }

  @Override
  @Nullable
  public Control getMainControl() {
    return textArea;
  }

}