QGIS API Documentation 3.29.0-Master (8c80f25a4f)
qgsnewauxiliarylayerdialog.cpp
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1/***************************************************************************
2 qgsnewauxiliarylayerdialog.cpp - description
3 -------------------
4 begin : Aug 28, 2017
5 copyright : (C) 2017 by Paul Blottiere
7 ***************************************************************************/
8
9/***************************************************************************
10 * *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
15 * *
16 ***************************************************************************/
17
19#include "qgsauxiliarystorage.h"
20#include "qgsproject.h"
21#include "qgsgui.h"
22
23#include <QMessageBox>
24#include <QPushButton>
25
27 : QDialog( parent )
28 , mLayer( layer )
29{
30 setupUi( this );
32
33 const QgsFields fields = mLayer->fields();
34 for ( const QgsField &field : fields )
35 comboBox->addItem( field.name() );
36
37 if ( fields.isEmpty() )
38 {
39 buttonBox->button( QDialogButtonBox::Ok )->setDisabled( true );
40 }
41}
42
44{
45 const int idx = mLayer->fields().lookupField( comboBox->currentText() );
46
47 if ( idx >= 0 )
48 {
49 const QgsField field = mLayer->fields().field( idx );
51
52 if ( alayer )
53 {
54 mLayer->setAuxiliaryLayer( alayer );
55 }
56 else
57 {
58 QDialog::close();
59 const QString errMsg = QgsProject::instance()->auxiliaryStorage()->errorString();
60 QMessageBox::critical( this, tr( "New Auxiliary Layer" ), errMsg );
61 return;
62 }
63 }
64
65 QDialog::accept();
66}
Class allowing to manage the auxiliary storage for a vector layer.
QString errorString() const
Returns the underlying error string describing potential errors happening in saveAs().
QgsAuxiliaryLayer * createAuxiliaryLayer(const QgsField &field, QgsVectorLayer *layer) const
Creates an auxiliary layer for a vector layer.
Encapsulate a field in an attribute table or data source.
Definition: qgsfield.h:51
QString name
Definition: qgsfield.h:60
Container of fields for a vector layer.
Definition: qgsfields.h:45
QgsField field(int fieldIdx) const
Returns the field at particular index (must be in range 0..N-1).
Definition: qgsfields.cpp:168
bool isEmpty() const
Checks whether the container is empty.
Definition: qgsfields.cpp:128
int lookupField(const QString &fieldName) const
Looks up field's index from the field name.
Definition: qgsfields.cpp:349
static void enableAutoGeometryRestore(QWidget *widget, const QString &key=QString())
Register the widget to allow its position to be automatically saved and restored when open and closed...
Definition: qgsgui.cpp:178
QgsNewAuxiliaryLayerDialog(QgsVectorLayer *layer, QWidget *parent=nullptr)
Constructor.
static QgsProject * instance()
Returns the QgsProject singleton instance.
Definition: qgsproject.cpp:476
const QgsAuxiliaryStorage * auxiliaryStorage() const
Returns the current const auxiliary storage.
Represents a vector layer which manages a vector based data sets.
void setAuxiliaryLayer(QgsAuxiliaryLayer *layer=nullptr)
Sets the current auxiliary layer.
QgsFields fields() const FINAL
Returns the list of fields of this layer.
const QgsField & field
Definition: qgsfield.h:463