/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at
 * trunk/opends/resource/legal-notices/OpenDS.LICENSE
 * or https://OpenDS.dev.java.net/OpenDS.LICENSE.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at
 * trunk/opends/resource/legal-notices/OpenDS.LICENSE.  If applicable,
 * add the following below this CDDL HEADER, with the fields enclosed
 * by brackets "[]" replaced with your own identifying information:
 *      Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 *
 *
 *      Copyright 2006-2010 Sun Microsystems, Inc.
 */

package org.opends.quicksetup.util;
import org.opends.messages.Message;

import javax.swing.JFrame;

import org.opends.quicksetup.ui.WebBrowserErrorDialog;
import org.opends.quicksetup.ui.QuickSetupStepPanel;

/**
 * This class is used to try to launch a URL in the user web browser.
 *
 * The class extends SwingWorker and tries to launch the URL using
 * a WebBrowserLauncher object in the construct method.
 * If there is a problem launching the user's browser, this class will display
 * a WebBrowserErrorDialog to allow the user to copy to the system clipboard the
 * URL we wanted to display.
 *
 * When is finished (successfully or unsuccessfully) it notifies the
 * QuickSetupStepPanel passed in the constructor.
 *
 */
public class URLWorker extends BackgroundTask<Object>
{
  private QuickSetupStepPanel panel;

  private String url;

  /**
   * Constructs a URLWorker.
   * @param panel the panel that created this URLWorker and to which we will
   * notify when we are over.
   * @param url the url to be displayed.
   */
  public URLWorker(QuickSetupStepPanel panel, String url)
  {
    this.panel = panel;
    this.url = url;
  }

  /**
   * {@inheritDoc}
   */
  public Object processBackgroundTask() throws WebBrowserException
  {
    try
    {
      WebBrowserLauncher.openURL(url);
    } catch (Throwable t)
    {
      // TODO: i18n
      throw new WebBrowserException(url, Message.raw("Bug: throwable"), t);
    }
    return null;
  }

  /**
   * {@inheritDoc}
   */
  public void backgroundTaskCompleted(Object returnValue,
      Throwable throwable)
  {
    WebBrowserException ex = (WebBrowserException) throwable;
    if (ex != null)
    {
      WebBrowserErrorDialog dlg =
          new WebBrowserErrorDialog((JFrame) panel.getMainWindow(), ex);
      dlg.setModal(false);
      dlg.packAndShow();
    }
    // Notify to the panel that the worker has finished.
    panel.urlWorkerFinished(this);
  }

  /**
   * Returns the URL that we are trying to launch in the users browser.
   * @return the URL that we are trying to launch in the users browser.
   */
  public String getURL()
  {
    return url;
  }
}