text: /*=============================================================================
  
    Library: CTK
  
    Copyright (c) German Cancer Research Center,
      Division of Medical and Biological Informatics
  
    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.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.
  
  =============================================================================*/
  
  #include "ctkXnatTreeBrowserMainWindow.h"
  #include "ui_ctkXnatTreeBrowserMainWindow.h"
  
  #include "ctkXnatLoginDialog.h"
  #include "ctkXnatTreeModel.h"
  #include "ctkXnatSession.h"
  #include "ctkXnatDataModel.h"
  #include "ctkXnatProject.h"
  #include "ctkXnatFile.h"
  
  ctkXnatTreeBrowserMainWindow::ctkXnatTreeBrowserMainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::ctkXnatTreeBrowserMainWindow),
    m_Session(0),
    m_TreeModel(new ctkXnatTreeModel())
  {
    ui->setupUi(this);
  
    ui->treeView->setModel(m_TreeModel);
    ui->downloadLabel->hide();
  
    this->connect(ui->loginButton, SIGNAL(clicked()), SLOT(loginButtonPushed()));
    this->connect(ui->treeView, SIGNAL(clicked(const QModelIndex&)), SLOT(itemSelected(const QModelIndex&)));
    this->connect(ui->downloadButton, SIGNAL(clicked()), SLOT(downloadButtonClicked()));
  }
  
  ctkXnatTreeBrowserMainWindow::~ctkXnatTreeBrowserMainWindow()
  {
    if (m_Session)
    {
      delete m_Session;
    }
    delete ui;
  
    delete m_TreeModel;
  }
  
  void ctkXnatTreeBrowserMainWindow::loginButtonPushed()
  {
    if (m_Session)
    {
      delete m_Session;
      m_Session = 0;
      ui->loginButton->setText("Login");
      ui->loginLabel->setText("Disconnected");
      ui->downloadLabel->hide();
  
      // nt: download tests... //
      // m_TreeModel->downloadFile (ui->treeView->selectionModel()->currentIndex(), "/Users/nicolastoussaint/Desktop/test.nii.gz");
    }
    else
    {
      ctkXnatLoginDialog loginDialog;
      if (loginDialog.exec() == QDialog::Accepted)
      {
        m_Session = loginDialog.session();
        if (m_Session)
        {
          ui->loginButton->setText("Logout");
          ui->loginLabel->setText(QString("Connected: %1").arg(m_Session->url().toString()));
  
          ctkXnatDataModel* dataModel = m_Session->dataModel();
          m_TreeModel->addDataModel(dataModel);
          ui->treeView->reset();
          ui->downloadLabel->show();
        }
      }
    }
  }
  
  void ctkXnatTreeBrowserMainWindow::itemSelected(const QModelIndex &index)
  {
    ctkXnatObject* xnatObject = m_TreeModel->xnatObject(index);
    ctkXnatFile* xnatFile = dynamic_cast<ctkXnatFile*>(xnatObject);
    ui->downloadButton->setEnabled(xnatFile != 0);
    ui->downloadLabel->setVisible(!(xnatFile != 0));
  }
  
  void ctkXnatTreeBrowserMainWindow::downloadButtonClicked()
  {
    const QModelIndex index = ui->treeView->selectionModel()->currentIndex();
    QVariant variant = m_TreeModel->data(index, Qt::DisplayRole);
    QString fileName = variant.value<QString>();
    if ( fileName.length() != 0 )
    {
      m_TreeModel->downloadFile(index, fileName);
    }
  }
  