/*
 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package org.graalvm.visualvm.application.snapshot;

import org.graalvm.visualvm.core.ui.components.Spacer;
import java.awt.Dialog;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFileChooser;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import org.openide.DialogDescriptor;
import org.openide.DialogDisplayer;
import org.openide.awt.Mnemonics;
import org.openide.util.NbBundle;
import org.openide.windows.WindowManager;

/**
 *
 * @author Jiri Sedlacek
 * 
 */
class ApplicationSnapshotConfigurator extends JPanel {

  static ApplicationSnapshotConfigurator defineSnapshot() {
    ApplicationSnapshotConfigurator hc = getDefault();
    hc.setupDefineCoreDump();
    
    final DialogDescriptor dd = new DialogDescriptor(hc, NbBundle.getMessage(ApplicationSnapshotConfigurator.class, "Title_Add_Application_Snapshot"), true, new Object[] {   // NOI18N
      hc.okButton, DialogDescriptor.CANCEL_OPTION }, hc.okButton, 0, null, null);
    final Dialog d = DialogDisplayer.getDefault().createDialog(dd);
    d.pack();
    d.setVisible(true);
    
    if (dd.getValue() == hc.okButton) return hc;
    else return null;
  }
  
  File getSnapshotFile() {
    return new File(snapshotFileField.getText().trim());
  }
  
  boolean deleteSourceFile() {
      return deleteSourceCheckbox.isSelected();
  }
  
  private static ApplicationSnapshotConfigurator defaultInstance;
  
  private ApplicationSnapshotConfigurator() {
    initComponents();
    update();
  }
  
  private static ApplicationSnapshotConfigurator getDefault() {
    if (defaultInstance == null) defaultInstance = new ApplicationSnapshotConfigurator();
    return defaultInstance;
  }
  
  private void setupDefineCoreDump() {
    snapshotFileField.setText("");
    deleteSourceCheckbox.setSelected(false);
  }
  
  private void update() {
    SwingUtilities.invokeLater(new Runnable() {
      public void run() {
        File snapshotFile = getSnapshotFile();
        okButton.setEnabled(ApplicationSnapshotsSupport.getInstance().getApplicationSnapshotCategory().isSnapshotArchive(snapshotFile));
      }
    });
  }

  private void chooseSnapshot() {
      JFileChooser chooser = new JFileChooser();
      chooser.setDialogTitle(NbBundle.getMessage(ApplicationSnapshotConfigurator.class, "LBL_Select_Application_Snapshot"));     // NOI18N
      chooser.setSelectedFile(getSnapshotFile());
      chooser.setAcceptAllFileFilterUsed(false);
      chooser.setFileFilter(ApplicationSnapshotsSupport.getInstance().getCategory().getFileFilter());
      if (chooser.showOpenDialog(WindowManager.getDefault().getMainWindow()) == JFileChooser.APPROVE_OPTION) snapshotFileField.setText(chooser.getSelectedFile().getAbsolutePath());
  }
  
  private void initComponents() {
    setLayout(new GridBagLayout());
    GridBagConstraints constraints;
    
    // snapshotFileLabel
    snapshotFileLabel = new JLabel();
    Mnemonics.setLocalizedText(snapshotFileLabel, NbBundle.getMessage(ApplicationSnapshotConfigurator.class, "LBL_Snapshot_file")); // NOI18N
    constraints = new GridBagConstraints();
    constraints.gridx = 0;
    constraints.gridy = 0;
    constraints.gridwidth = 1;
    constraints.fill = GridBagConstraints.NONE;
    constraints.anchor = GridBagConstraints.EAST;
    constraints.insets = new Insets(15, 10, 0, 0);
    add(snapshotFileLabel, constraints);
    
    // snapshotFileField
    snapshotFileField = new JTextField();
    snapshotFileLabel.setLabelFor(snapshotFileField);
    snapshotFileField.setPreferredSize(new Dimension(220, snapshotFileField.getPreferredSize().height));
    snapshotFileField.getDocument().addDocumentListener(new DocumentListener() {
      public void insertUpdate(DocumentEvent e)  { update(); }
      public void removeUpdate(DocumentEvent e)  { update(); }
      public void changedUpdate(DocumentEvent e) { update(); }
    });
    constraints = new GridBagConstraints();
    constraints.gridx = 1;
    constraints.gridy = 0;
    constraints.weightx = 1;
    constraints.gridwidth = 1;
    constraints.fill = GridBagConstraints.HORIZONTAL;
    constraints.anchor = GridBagConstraints.WEST;
    constraints.insets = new Insets(15, 5, 0, 0);
    add(snapshotFileField, constraints);
    
    // snapshotFileButton
    snapshotFileButton = new JButton();
    Mnemonics.setLocalizedText(snapshotFileButton, NbBundle.getMessage(ApplicationSnapshotConfigurator.class, "LBL_Browse")); // NOI18N
    snapshotFileButton.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            chooseSnapshot();
        }
    });
    constraints = new GridBagConstraints();
    constraints.gridx = 2;
    constraints.gridy = 0;
    constraints.gridwidth = 1;
    constraints.fill = GridBagConstraints.NONE;
    constraints.anchor = GridBagConstraints.WEST;
    constraints.insets = new Insets(15, 5, 0, 10);
    add(snapshotFileButton, constraints);         
    
    // deleteSourceCheckbox
    deleteSourceCheckbox = new JCheckBox();
    Mnemonics.setLocalizedText(deleteSourceCheckbox, NbBundle.getMessage(ApplicationSnapshotConfigurator.class, "LBL_Delete_source_file")); // NOI18N
    constraints = new GridBagConstraints();
    constraints.gridx = 0;
    constraints.gridy = 1;
    constraints.gridwidth = GridBagConstraints.REMAINDER;
    constraints.fill = GridBagConstraints.NONE;
    constraints.anchor = GridBagConstraints.WEST;
    constraints.insets = new Insets(18, 10, 0, 0);
    add(deleteSourceCheckbox, constraints);
    
    // spacer
    constraints = new GridBagConstraints();
    constraints.gridx = 0;
    constraints.gridy = 2;
    constraints.weighty = 1;
    constraints.gridwidth = GridBagConstraints.REMAINDER;
    constraints.fill = GridBagConstraints.BOTH;
    constraints.anchor = GridBagConstraints.NORTHWEST;
    constraints.insets = new Insets(0, 0, 15, 0);
    add(Spacer.create(), constraints);
    
    // okButton
    okButton = new JButton(NbBundle.getMessage(ApplicationSnapshotConfigurator.class, "LBL_OK"));    // NOI18N
    
    // UI tweaks
    deleteSourceCheckbox.setBorder(snapshotFileLabel.getBorder());
  }
  
  private JLabel snapshotFileLabel;
  private JTextField snapshotFileField;
  private JButton snapshotFileButton;
  private JCheckBox deleteSourceCheckbox;
  
  private JButton okButton;
  
}
