text: /* ============================================================================
  * Copyright (c) 2009-2016 BlueQuartz Software, LLC
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *
  * Redistributions of source code must retain the above copyright notice, this
  * list of conditions and the following disclaimer.
  *
  * Redistributions in binary form must reproduce the above copyright notice, this
  * list of conditions and the following disclaimer in the documentation and/or
  * other materials provided with the distribution.
  *
  * Neither the name of BlueQuartz Software, the US Air Force, nor the names of its
  * contributors may be used to endorse or promote products derived from this software
  * without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * The code contained herein was partially funded by the followig contracts:
  *    United States Air Force Prime Contract FA8650-07-D-5800
  *    United States Air Force Prime Contract FA8650-10-D-5210
  *    United States Prime Contract Navy N00173-07-C-2068
  *
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
  
  #pragma once
  
  
  #include <QtCore/QObject>
  #include <QtCore/QPointer>
  #include <QtWidgets/QWidget>
  
  #include "SVWidgetsLib/QtSupport/QtSFaderWidget.h"
  
  #include "SIMPLib/DataContainers/DataContainerArrayProxy.h"
  #include "SIMPLib/FilterParameters/DataContainerReaderFilterParameter.h"
  #include "SIMPLib/Filtering/AbstractFilter.h"
  
  #include "SVWidgetsLib/SVWidgetsLib.h"
  #include "SVWidgetsLib/FilterParameterWidgets/FilterParameterWidget.h"
  
  #include "SVWidgetsLib/ui_DataContainerReaderWidget.h"
  
  class QStandardItemModel;
  class DataContainerReader;
  class QLabel;
  class QtSFSDropLabel;
  class QAction;
  
  /**
  * @brief
  * @author
  * @version
  */
  class SVWidgetsLib_EXPORT DataContainerReaderWidget : public FilterParameterWidget, private Ui::DataContainerReaderWidget
  {
      Q_OBJECT
  
    public:
      /**
      * @brief Constructor
      * @param parameter The FilterParameter object that this widget represents
      * @param filter The instance of the filter that this parameter is a part of
      * @param parent The parent QWidget for this Widget
      */
      DataContainerReaderWidget(FilterParameter* parameter, AbstractFilter* filter = nullptr, QWidget* parent = nullptr);
  
      /**
       * @brief DataContainerReaderWidget
       * @param parent
       */
      DataContainerReaderWidget(QWidget* parent = nullptr);
  
      ~DataContainerReaderWidget() override;
  
      void initialize(FilterParameter* parameter, AbstractFilter* filter = nullptr);
  
      /**
      * @brief This method does additional GUI widget connections
      */
      void setupGui() override;
  
      /**
       * @brief verifyPathExists
       * @param filePath
       * @param lineEdit
       * @return
       */
      bool verifyPathExists(QString filePath, QLineEdit *lineEdit);
  
      void setFilter(AbstractFilter* value);
      AbstractFilter* getFilter() const;
  
      void setFilterParameter(FilterParameter* value);
      FilterParameter* getFilterParameter() const;
  
    public slots:
      void beforePreflight();
      void afterPreflight();
      void filterNeedsInputParameters(AbstractFilter* filter);
      void itemActivated(const QModelIndex& index);
  
  
      void on_m_LineEdit_fileDropped(const QString& text);
      void on_m_LineEdit_editingFinished();
      void on_m_LineEdit_textChanged(const QString& text);
      void on_m_LineEdit_returnPressed();
  
      void on_selectBtn_clicked();
      void on_dcaProxyView_updatePreviewWidget(const QModelIndex& index);
  
    protected:
      void updateProxyFromModel();
  
      void checkFilePath(const QString& text);
      void updateDCAProxy(const QString& text);
      void updateStylingForPath(const QString& text);
  
      void updateModelFromProxy(DataContainerArrayProxy& proxy);
      void updateProxyFromProxy(DataContainerArrayProxy& current, DataContainerArrayProxy& incoming);
  
      static void setOpenDialogLastFilePath(QString val) { m_OpenDialogLastFilePath = val; }
      static QString getOpenDialogLastFilePath() { return m_OpenDialogLastFilePath; }
  
      /**
       * @brief setupMenuField
       */
      void setupMenuField();
  
    protected slots:
  
      /**
       * @brief showFileInFileSystem
       */
      void showFileInFileSystem() override;
  
  
    private:
      static QString                       m_OpenDialogLastFilePath;
      DataContainerReader*                 m_Filter = nullptr;
      QString                              m_CurrentlyValidPath = "";
      QString                              m_CurrentText = "";
      DataContainerReaderFilterParameter*  m_FilterParameter;
      DataContainerArrayProxy              m_DcaProxy;
      bool                                 m_DidCausePreflight;
      QAction*                             m_ShowFileAction = nullptr;
  
      /**
       * @brief hasValidFilePath
       * @param filePath
       * @return
       */
      bool hasValidFilePath(const QString &filePath);
  
      DataContainerReaderWidget(const DataContainerReaderWidget&) = delete; // Copy Constructor Not Implemented
      void operator=(const DataContainerReaderWidget&) = delete;            // Move assignment Not Implemented
  };
  
  