QGIS API Documentation  3.23.0-Master (c716e02dd3)
qgslistwidgetwrapper.cpp
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1 /***************************************************************************
2  qgslistwidgetwrapper.cpp
3  --------------------------------------
4  Date : 09.2016
5  Copyright : (C) 2016 Patrick Valsecchi
6  Email : [email protected]
7  ***************************************************************************
8  * *
9  * This program is free software; you can redistribute it and/or modify *
10  * it under the terms of the GNU General Public License as published by *
11  * the Free Software Foundation; either version 2 of the License, or *
12  * (at your option) any later version. *
13  * *
14  ***************************************************************************/
15 
16 #include "qgslistwidgetwrapper.h"
17 #include "qgslistwidget.h"
18 #include "qgsattributeform.h"
19 
20 QgsListWidgetWrapper::QgsListWidgetWrapper( QgsVectorLayer *layer, int fieldIdx, QWidget *editor, QWidget *parent ):
21  QgsEditorWidgetWrapper( layer, fieldIdx, editor, parent )
22 {
23 }
24 
26 {
27  mWidget->setList( QVariantList() );
28 }
29 
30 QWidget *QgsListWidgetWrapper::createWidget( QWidget *parent )
31 {
32  if ( isInTable( parent ) )
33  {
34  // if to be put in a table, draw a border and set a decent size
35  QFrame *ret = new QFrame( parent );
36  ret->setFrameShape( QFrame::StyledPanel );
37  QHBoxLayout *layout = new QHBoxLayout( ret );
38  layout->addWidget( new QgsListWidget( field().subType(), ret ) );
39  ret->setMinimumSize( QSize( 320, 110 ) );
40  return ret;
41  }
42  else
43  {
44  return new QgsListWidget( field().subType(), parent );
45  }
46 }
47 
48 void QgsListWidgetWrapper::initWidget( QWidget *editor )
49 {
50  mWidget = qobject_cast<QgsListWidget *>( editor );
51  if ( !mWidget )
52  {
53  mWidget = editor->findChild<QgsListWidget *>();
54  }
55 
56  connect( mWidget, &QgsListWidget::valueChanged, this, &QgsListWidgetWrapper::onValueChanged );
57 }
58 
60 {
61  return mWidget ? mWidget->valid() : true;
62 }
63 
64 void QgsListWidgetWrapper::updateValues( const QVariant &value, const QVariantList & )
65 {
66  mWidget->setList( value.toList() );
67 }
68 
70 {
71  const QVariant::Type type = field().type();
72  if ( !mWidget ) return QVariant( type );
73  const QVariantList list = mWidget->list();
74  if ( list.size() == 0 && config( QStringLiteral( "EmptyIsNull" ) ).toBool() )
75  {
76  return QVariant( );
77  }
78  if ( type == QVariant::StringList )
79  {
80  QStringList result;
81  for ( QVariantList::const_iterator it = list.constBegin(); it != list.constEnd(); ++it )
82  result.append( it->toString() );
83  return result;
84  }
85  else
86  {
87  return list;
88  }
89 }
90 
91 void QgsListWidgetWrapper::onValueChanged()
92 {
94 }
95 
96 void QgsListWidgetWrapper::updateConstraintWidgetStatus()
97 {
98  // Nothing
99 }
Manages an editor widget Widget and wrapper share the same parent.
static bool isInTable(const QWidget *parent)
Check if the given widget or one of its parent is a QTableView.
void emitValueChanged()
Will call the value() method to determine the emitted value.
QgsField field() const
Access the field.
QVariant::Type type
Definition: qgsfield.h:58
QgsListWidgetWrapper(QgsVectorLayer *layer, int fieldIdx, QWidget *editor=nullptr, QWidget *parent=nullptr)
Constructor for QgsListWidgetWrapper.
QVariant value() const override
Will be used to access the widget's value.
QWidget * createWidget(QWidget *parent) override
This method should create a new widget with the provided parent.
void showIndeterminateState() override
Sets the widget to display in an indeterminate "mixed value" state.
bool valid() const override
Returns true if the widget has been properly initialized.
void initWidget(QWidget *editor) override
This method should initialize the editor widget with runtime data.
Widget allowing to edit a QVariantList, using a table.
Definition: qgslistwidget.h:67
bool valid() const
Check the content is valid.
Definition: qgslistwidget.h:92
QVariantList list
Definition: qgslistwidget.h:69
void setList(const QVariantList &list)
Set the initial value of the widget.
void valueChanged()
Emitted each time a key or a value is changed.
Represents a vector layer which manages a vector based data sets.
QVariantMap config() const
Returns the whole config.