qgssourcefieldsproperties.h

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/***************************************************************************
    qgssourcefieldsproperties.h
    ---------------------
    begin                : July 2017
    copyright            : (C) 2017 by David Signer
    email                : david at opengis dot ch
 
 ***************************************************************************
 *                                                                         *
 *   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 QGSSOURCEFIELDSPROPERTIES_H
#define QGSSOURCEFIELDSPROPERTIES_H
 
// We don't want to expose this in the public API
#define SIP_NO_FILE
 
#include <QMimeData>
#include <QPushButton>
#include <QTableWidget>
#include <QTreeWidget>
#include <QWidget>
#include <QSpinBox>
#include <QTreeWidgetItem>
#include <QDropEvent>
#include <QTableWidgetItem>
#include <QMessageBox>
#include <QFileDialog>
#include <QHBoxLayout>
#include <QFormLayout>
 
#include "ui_qgssourcefieldsproperties.h"
#include "qgis_gui.h"
#include "qgslogger.h"
#include "qgsexpressionbuilderdialog.h"
#include "qgsfieldcalculator.h"
 
class GUI_EXPORT QgsSourceFieldsProperties : public QWidget, private Ui_QgsSourceFieldsProperties
{
    Q_OBJECT
 
  public:
    explicit QgsSourceFieldsProperties( QgsVectorLayer *layer, QWidget *parent = nullptr );
 
    void init();
    void apply();
 
    void loadRows();
    void setRow( int row, int idx, const QgsField &field );
 
    bool addAttribute( const QgsField &field );
 
  protected:
    void updateButtons();
 
    QgsVectorLayer *mLayer = nullptr;
 
    // Holds all the first column items (header: id) of the table.
    // The index in the list is the fieldIdx, and therefore acts as a mapping
    // between fieldIdx and QTableWidgetItem->row()
    QList<QTableWidgetItem *> mIndexedWidgets;
 
    enum AttrColumns
    {
      AttrIdCol = 0,
      AttrNameCol,
      AttrAliasCol,
      AttrTypeCol,
      AttrTypeNameCol,
      AttrLengthCol,
      AttrPrecCol,
      AttrCommentCol,
      AttrConfigurationFlagsCol,
      AttrColCount,
    };
 
  private:
    Ui::QgsSourceFieldsProperties *ui = nullptr;
    void updateFieldRenamingStatus();
 
  signals:
    void toggleEditing();
 
  private slots:
 
    void updateExpression();
 
    void editingToggled();
    void addAttributeClicked();
    void deleteAttributeClicked();
    void calculateFieldClicked();
 
    void attributeAdded( int idx );
    void attributeDeleted( int idx );
 
    void attributesListCellChanged( int row, int column );
    void attributesListCellPressed( int row, int column );
 
};
 
#endif // QGSSOURCEFIELDSPROPERTIES_H