qgsprocessingmultipleselectiondialog.h

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/***************************************************************************
                             qgsprocessingmultipleselectiondialog.h
                             ----------------------------------
    Date                 : February 2019
    Copyright            : (C) 2019 Nyall Dawson
    Email                : nyall dot dawson at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSPROCESSINGMULTIPLESELECTIONDIALOG_H
#define QGSPROCESSINGMULTIPLESELECTIONDIALOG_H
 
#include "qgis.h"
#include "qgis_gui.h"
#include "ui_qgsprocessingmultipleselectiondialogbase.h"
#include "qgsprocessingparameters.h"
#include <QDialog>
 
class QStandardItemModel;
class QToolButton;
class QStandardItem;
class QgsProcessingModelChildParameterSource;
class QgsProcessingModelAlgorithm;
 
 
class GUI_EXPORT QgsProcessingMultipleSelectionPanelWidget : public QgsPanelWidget, private Ui::QgsProcessingMultipleSelectionDialogBase
{
    Q_OBJECT
 
  public:
 
    QgsProcessingMultipleSelectionPanelWidget( const QVariantList &availableOptions = QVariantList(),
        const QVariantList &selectedOptions = QVariantList(),
        QWidget *parent SIP_TRANSFERTHIS = nullptr );
 
#ifndef SIP_RUN
    void setValueFormatter( const std::function< QString( const QVariant & )> &formatter );
#else
    void setValueFormatter( SIP_PYCALLABLE );
    % MethodCode
 
    Py_BEGIN_ALLOW_THREADS
 
    sipCpp->setValueFormatter( [a0]( const QVariant &v )->QString
    {
      QString res;
      SIP_BLOCK_THREADS
      PyObject *s = sipCallMethod( NULL, a0, "D", &v, sipType_QVariant, NULL );
      int state;
      int sipIsError = 0;
      QString *t1 = reinterpret_cast<QString *>( sipConvertToType( s, sipType_QString, 0, SIP_NOT_NONE, &state, &sipIsError ) );
      if ( sipIsError == 0 )
      {
        res = QString( *t1 );
      }
      sipReleaseType( t1, sipType_QString, state );
      SIP_UNBLOCK_THREADS
      return res;
    } );
 
    Py_END_ALLOW_THREADS
    % End
#endif
 
 
    QVariantList selectedOptions() const;
 
    QDialogButtonBox *buttonBox() { return mButtonBox; }
 
  signals:
 
    void acceptClicked();
 
    void selectionChanged();
 
  protected:
 
    void addOption( const QVariant &value, const QString &title, bool selected, bool updateExistingTitle = false );
 
    QListView *listView() const { return mSelectionList; }
 
    QStandardItemModel *mModel = nullptr;
    std::function< QString( const QVariant & )> mValueFormatter;
 
    void dragEnterEvent( QDragEnterEvent *event ) override;
    void dropEvent( QDropEvent *event ) override;
 
  private slots:
 
    void selectAll( bool checked );
    void toggleSelection();
 
  private:
 
    QPushButton *mButtonSelectAll = nullptr;
    QPushButton *mButtonClearSelection = nullptr;
    QPushButton *mButtonToggleSelection = nullptr;
 
    QList< QStandardItem * > currentItems();
 
    void populateList( const QVariantList &availableOptions, const QVariantList &selectedOptions );
 
    friend class TestProcessingGui;
 
    QList<int> existingMapLayerFromMimeData( const QMimeData *data ) const;
};
 
 
class GUI_EXPORT QgsProcessingMultipleSelectionDialog : public QDialog
{
    Q_OBJECT
 
  public:
 
    QgsProcessingMultipleSelectionDialog( const QVariantList &availableOptions = QVariantList(),
                                          const QVariantList &selectedOptions = QVariantList(),
                                          QWidget *parent SIP_TRANSFERTHIS = nullptr, Qt::WindowFlags flags = Qt::WindowFlags() );
 
 
#ifndef SIP_RUN
    void setValueFormatter( const std::function< QString( const QVariant & )> &formatter );
#else
    void setValueFormatter( SIP_PYCALLABLE );
    % MethodCode
 
    Py_BEGIN_ALLOW_THREADS
 
    sipCpp->setValueFormatter( [a0]( const QVariant &v )->QString
    {
      QString res;
      SIP_BLOCK_THREADS
      PyObject *s = sipCallMethod( NULL, a0, "D", &v, sipType_QVariant, NULL );
      int state;
      int sipIsError = 0;
      QString *t1 = reinterpret_cast<QString *>( sipConvertToType( s, sipType_QString, 0, SIP_NOT_NONE, &state, &sipIsError ) );
      if ( sipIsError == 0 )
      {
        res = QString( *t1 );
      }
      sipReleaseType( t1, sipType_QString, state );
      SIP_UNBLOCK_THREADS
      return res;
    } );
 
    Py_END_ALLOW_THREADS
    % End
#endif
 
 
    QVariantList selectedOptions() const;
 
  private:
 
    QgsProcessingMultipleSelectionPanelWidget *mWidget = nullptr;
 
};
 
 
class GUI_EXPORT QgsProcessingMultipleInputPanelWidget : public QgsProcessingMultipleSelectionPanelWidget
{
    Q_OBJECT
 
  public:
 
    QgsProcessingMultipleInputPanelWidget( const QgsProcessingParameterMultipleLayers *parameter,
                                           const QVariantList &selectedOptions,
                                           const QList< QgsProcessingModelChildParameterSource > &modelSources,
                                           QgsProcessingModelAlgorithm *model = nullptr,
                                           QWidget *parent SIP_TRANSFERTHIS = nullptr );
 
    void setProject( QgsProject *project );
 
  private slots:
 
    void addFiles();
    void addDirectory();
 
  protected:
    void dragEnterEvent( QDragEnterEvent *event ) override;
    void dropEvent( QDropEvent *event ) override;
 
  private:
 
    QList<int> existingMapLayerFromMimeData( const QMimeData *data ) const;
    void populateFromProject( QgsProject *project );
 
    const QgsProcessingParameterMultipleLayers *mParameter = nullptr;
};
 
 
class GUI_EXPORT QgsProcessingMultipleInputDialog : public QDialog
{
    Q_OBJECT
 
  public:
 
    QgsProcessingMultipleInputDialog( const QgsProcessingParameterMultipleLayers *parameter,
                                      const QVariantList &selectedOptions,
                                      const QList< QgsProcessingModelChildParameterSource > &modelSources,
                                      QgsProcessingModelAlgorithm *model = nullptr,
                                      QWidget *parent SIP_TRANSFERTHIS = nullptr, Qt::WindowFlags flags = Qt::WindowFlags() );
 
    QVariantList selectedOptions() const;
 
    void setProject( QgsProject *project );
 
  private:
 
    QgsProcessingMultipleInputPanelWidget *mWidget = nullptr;
 
};
 
 
 
#endif // QGSPROCESSINGMULTIPLESELECTIONDIALOG_H