/*=========================================================================

  Library:   CTK

  Copyright (c) Kitware Inc.

  Licensed 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.commontk.org/LICENSE

  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.

=========================================================================*/

// Qt includes
#include <QApplication>
#include <QSignalSpy>
#include <QStyle>
#include <QTimer>
#include <QVBoxLayout>

// CTK includes
#include "ctkDirectoryButton.h"

// STD includes
#include <cstdlib>
#include <iostream>

//-----------------------------------------------------------------------------
int ctkDirectoryButtonTest1(int argc, char * argv [] )
{
  QApplication app(argc, argv);
  
  QWidget topLevel;
  ctkDirectoryButton button;
  
  QIcon defaultIcon = button.style()->standardIcon(QStyle::SP_DirIcon);
  QIcon icon = button.style()->standardIcon(QStyle::SP_MessageBoxQuestion);
  QIcon icon2 = button.style()->standardIcon(QStyle::SP_DesktopIcon);

  ctkDirectoryButton button2(".");
  ctkDirectoryButton button3(icon, "..");
  
  QVBoxLayout* layout = new QVBoxLayout;
  layout->addWidget(&button);
  layout->addWidget(&button2);
  layout->addWidget(&button3);
  topLevel.setLayout(layout);
  
  button.setCaption("Select a directory");
  if (button.caption() != "Select a directory")
    {
    std::cerr << "ctkDirectoryButton::setCaption() failed." << std::endl;
    return EXIT_FAILURE;
    }

  if (button.icon().pixmap(20).toImage() !=
      defaultIcon.pixmap(20).toImage())
    {
    std::cerr << "ctkDirectoryButton::icon() failed." << std::endl;
    return EXIT_FAILURE;
    }

  button3.setIcon(icon2);
  if (button3.icon().pixmap(20).toImage() !=
      icon2.pixmap(20).toImage())
    {
    std::cerr << "ctkDirectoryButton::setIcon() failed." << std::endl;
    return EXIT_FAILURE;
    }
  
#ifdef USE_QFILEDIALOG_OPTIONS
  button.setOptions(QFileDialog::ShowDirsOnly | QFileDialog::ReadOnly);
  if (button.options() != (QFileDialog::ShowDirsOnly |
                           QFileDialog::ReadOnly))
#else
  button.setOptions(ctkDirectoryButton::ShowDirsOnly |
                    ctkDirectoryButton::ReadOnly);
  
  if (button.options() != (ctkDirectoryButton::ShowDirsOnly |
                           ctkDirectoryButton::ReadOnly))
#endif
    {
    std::cerr<< "ctkDirectoryButton::setOptions failed" << std::endl;
    return EXIT_FAILURE;
    }

  QSignalSpy spyDirectoryChanged(&button, SIGNAL(directoryChanged(const QString&)));
  QSignalSpy spyDirectorySelected(&button, SIGNAL(directorySelected(const QString&)));

  button.setDirectory(QDir::home().absolutePath());
  if ( QDir(button.directory()) != QDir::home() ||
       spyDirectoryChanged.count() != 1 || 
       spyDirectorySelected.count() != 1)
    {
    std::cerr<< "ctkDirectoryButton::setDirectory failed" << button.directory().toStdString() << std::endl;
    return EXIT_FAILURE;
    }

  spyDirectoryChanged.clear();
  spyDirectorySelected.clear();
  // set it again... just to check that it doesn't fire a new signal
  button.setDirectory(QDir::home().absolutePath());

  if ( QDir(button.directory()) != QDir::home() ||
       spyDirectoryChanged.count() != 0 || 
       spyDirectorySelected.count() != 1)
    {
    std::cerr<< "ctkDirectoryButton::setDirectory failed" << button.directory().toStdString() << std::endl;
    return EXIT_FAILURE;
    }

  topLevel.show();

  if (argc < 2 || QString(argv[1]) != "-I" )
    {
    QTimer::singleShot(200, &app, SLOT(quit()));
    }

  QTimer::singleShot(100, &button, SLOT(browse()));

  return app.exec();
}