/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.uima.tools.cvd.control;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JFileChooser;

import org.apache.uima.internal.util.Timer;
import org.apache.uima.tools.cvd.MainFrame;

/**
 * The Class FileOpenEventHandler.
 */
public class FileOpenEventHandler implements ActionListener {

  /** The main. */
  private final MainFrame main;

  /**
   * Instantiates a new file open event handler.
   *
   * @param frame
   *          the frame
   */
  public FileOpenEventHandler(MainFrame frame) {
    this.main = frame;
  }

  /**
   * Action performed.
   *
   * @param event
   *          the event
   * @see java.awt.event.ActionListener#actionPerformed(ActionEvent)
   */
  @Override
  public void actionPerformed(ActionEvent event) {
    JFileChooser fileChooser = new JFileChooser();
    fileChooser.setDialogTitle("Open text file");
    fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
    if (this.main.getFileOpenDir() != null) {
      fileChooser.setCurrentDirectory(this.main.getFileOpenDir());
    }
    int rc = fileChooser.showOpenDialog(this.main);
    if (rc == JFileChooser.APPROVE_OPTION) {
      this.main.setTextFile(fileChooser.getSelectedFile());
      if (this.main.getTextFile().exists() && this.main.getTextFile().isFile()) {
        this.main.setFileOpenDir(this.main.getTextFile().getParentFile());
      }
      Timer time = new Timer();
      time.start();
      this.main.loadFile();
      time.stop();
      this.main.resetTrees();
      this.main.setSaveTextFileEnable(true);
      this.main.getUndoMgr().discardAllEdits();
      this.main.setFileStatusMessage();
      this.main.setStatusbarMessage("Done loading text file " + this.main.getTextFile().getName()
              + " in " + time.getTimeSpan() + ".");
    }
  }
}