/*
 * The contents of this file are subject to the terms of the Common Development and
 * Distribution License (the License). You may not use this file except in compliance with the
 * License.
 *
 * You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
 * specific language governing permission and limitations under the License.
 *
 * When distributing Covered Software, include this CDDL Header Notice in each file and include
 * the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
 * Header, with the fields enclosed by brackets [] replaced by your own identifying
 * information: "Portions Copyright [year] [name of copyright owner]".
 *
 * Copyright 2006-2008 Sun Microsystems, Inc.
 * Portions Copyright 2014-2015 ForgeRock AS.
 */

package org.opends.quicksetup.ui;

import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.HashSet;

import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.text.JTextComponent;

import org.forgerock.i18n.LocalizableMessage;
import org.opends.quicksetup.ButtonName;
import org.opends.quicksetup.CurrentInstallStatus;
import org.opends.quicksetup.event.ButtonActionListener;
import org.opends.quicksetup.event.ButtonEvent;
import static org.opends.messages.QuickSetupMessages.*;

/**
 * This class is a panel that contains an error message and a quit button.
 * It is used for instance when we try to install Open DS but it is already
 * installed.
 *
 */
public class QuickSetupErrorPanel extends QuickSetupPanel
{
  private static final long serialVersionUID = 1765037717593522233L;

  private HashSet<ButtonActionListener> buttonListeners = new HashSet<>();

  private JButton quitButton;
  private JButton continueButton;

  /**
   * Constructor of the QuickSetupErrorPanel.
   * @param application Application this panel represents
   * @param installStatus the current install status.
   */
  public QuickSetupErrorPanel(GuiApplication application,
                              CurrentInstallStatus installStatus)
  {
    this(application, installStatus.getInstallationMsg());
    continueButton.setVisible(installStatus.canOverwriteCurrentInstall());
  }

  /**
   * Constructor of the QuickSetupErrorPanel.
   * @param application Application this panel represents
   * @param msg the error message to display formatted in HTML.
   */
  public QuickSetupErrorPanel(GuiApplication application,
                              LocalizableMessage msg)
  {
    super(application);
    JPanel p1 = new JPanel(new GridBagLayout());
    p1.setBackground(UIFactory.CURRENT_STEP_PANEL_BACKGROUND);
    p1.setBorder(UIFactory.DIALOG_PANEL_BORDER);
    GridBagConstraints gbc = new GridBagConstraints();
    gbc.gridwidth = GridBagConstraints.RELATIVE;
    gbc.anchor = GridBagConstraints.NORTHWEST;
    gbc.insets = UIFactory.getCurrentStepPanelInsets();
    p1.add(UIFactory.makeJLabel(UIFactory.IconType.WARNING_LARGE, null,
        UIFactory.TextStyle.NO_STYLE), gbc);
    gbc.weightx = 1.0;
    gbc.gridwidth = GridBagConstraints.REMAINDER;
    gbc.fill = GridBagConstraints.BOTH;
    gbc.insets.left = 0;
    JTextComponent tf =
            UIFactory.makeHtmlPane(msg,
                    UIFactory.INSTRUCTIONS_FONT);
    tf.setOpaque(false);
    tf.setEditable(false);
    p1.add(tf, gbc);

    gbc.weighty = 1.0;
    gbc.fill = GridBagConstraints.VERTICAL;
    p1.add(Box.createVerticalGlue(), gbc);

    JPanel p2 = new JPanel(new GridBagLayout());
    p2.setOpaque(false);
    gbc.fill = GridBagConstraints.HORIZONTAL;
    gbc.weightx = 1.0;
    gbc.insets = UIFactory.getEmptyInsets();
    gbc.gridwidth = 3;
    p2.add(Box.createHorizontalGlue(), gbc);
    quitButton =
        UIFactory.makeJButton(INFO_QUIT_BUTTON_LABEL.get(),
            INFO_QUIT_BUTTON_INSTALL_TOOLTIP.get());

    final ButtonName fQuitButtonName = ButtonName.QUIT;

    ActionListener quitListener = new ActionListener()
    {
      public void actionPerformed(ActionEvent ev)
      {
        ButtonEvent be = new ButtonEvent(ev.getSource(), fQuitButtonName);
        for (ButtonActionListener li : buttonListeners)
        {
          li.buttonActionPerformed(be);
        }
      }
    };
    quitButton.addActionListener(quitListener);

    continueButton =
      UIFactory.makeJButton(INFO_CONTINUE_BUTTON_LABEL.get(),
          INFO_CONTINUE_BUTTON_INSTALL_TOOLTIP.get());
    final ButtonName fContinueButtonName = ButtonName.CONTINUE_INSTALL;

    ActionListener continueListener = new ActionListener()
    {
      public void actionPerformed(ActionEvent ev)
      {
        ButtonEvent be = new ButtonEvent(ev.getSource(), fContinueButtonName);
        for (ButtonActionListener li : buttonListeners)
        {
          li.buttonActionPerformed(be);
        }
      }
    };
    continueButton.addActionListener(continueListener);

    gbc.fill = GridBagConstraints.NONE;
    gbc.weightx = 0.0;

    gbc.gridwidth = GridBagConstraints.RELATIVE;
    p2.add(continueButton, gbc);
    continueButton.setVisible(false);

    gbc.insets.left = UIFactory.HORIZONTAL_INSET_BETWEEN_BUTTONS;
    gbc.gridwidth = GridBagConstraints.REMAINDER;
    p2.add(quitButton, gbc);

    setLayout(new GridBagLayout());
    setBackground(UIFactory.DEFAULT_BACKGROUND);
    setOpaque(true);
    gbc.insets = UIFactory.getEmptyInsets();
    gbc.fill = GridBagConstraints.BOTH;
    gbc.gridwidth = GridBagConstraints.REMAINDER;
    gbc.weightx = 1.0;
    gbc.weighty = 1.0;
    add(p1, gbc);
    gbc.weighty = 0.0;
    gbc.insets = UIFactory.getButtonsPanelInsets();
    add(p2, gbc);
  }

  /**
   * Adds a button listener.  All the button listeners will be notified when
   * the buttons are clicked (by the user or programatically).
   * @param l the ButtonActionListener to be added.
   */
  public void addButtonActionListener(ButtonActionListener l)
  {
    buttonListeners.add(l);
  }

  /**
   * Removes a button listener.
   * @param l the ButtonActionListener to be removed.
   */
  public void removeButtonActionListener(ButtonActionListener l)
  {
    buttonListeners.remove(l);
  }

  /**
   * Returns the quit button.
   * @return the quit button.
   */
  public JButton getQuitButton()
  {
    return quitButton;
  }

  /**
   * Returns the continue install button.
   * @return the continue install button.
   */
  public JButton getContinueInstallButton()
  {
    return continueButton;
  }
}