QGIS API Documentation  3.4.15-Madeira (e83d02e274)
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 *vl, int fieldIdx, QWidget *editor, QWidget *parent ):
21  QgsEditorWidgetWrapper( vl, 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::setValue( const QVariant &value )
65 {
66  mWidget->setList( value.toList() );
67 }
68 
70 {
71  QVariant::Type type = field().type();
72  if ( !mWidget ) return QVariant( type );
73  if ( type == QVariant::StringList )
74  {
75  QStringList result;
76  const QVariantList list = mWidget->list();
77  for ( QVariantList::const_iterator it = list.constBegin(); it != list.constEnd(); ++it )
78  result.append( it->toString() );
79  return result;
80  }
81  else
82  return QVariant( mWidget->list() );
83 }
84 
85 void QgsListWidgetWrapper::onValueChanged()
86 {
87  emit valueChanged( value() );
88 }
89 
90 void QgsListWidgetWrapper::updateConstraintWidgetStatus()
91 {
92  // Nothing
93 }
Manages an editor widget Widget and wrapper share the same parent.
QgsField field() const
Access the field.
bool valid() const override
Returns true if the widget has been properly initialized.
QVariantList list
Definition: qgslistwidget.h:69
void setList(const QVariantList &list)
Set the initial value of the widget.
bool valid() const
Check the content is valid.
Definition: qgslistwidget.h:92
static bool isInTable(const QWidget *parent)
Check if the given widget or one of its parent is a QTableView.
void valueChanged()
Emitted each time a key or a value is changed.
QVariant value() const override
Will be used to access the widget&#39;s value.
Widget allowing to edit a QVariantList, using a table.
Definition: qgslistwidget.h:66
QWidget * createWidget(QWidget *parent) override
This method should create a new widget with the provided parent.
void setValue(const QVariant &value) override
void showIndeterminateState() override
Sets the widget to display in an indeterminate "mixed value" state.
void valueChanged(const QVariant &value)
Emit this signal, whenever the value changed.
QgsListWidgetWrapper(QgsVectorLayer *vl, int fieldIdx, QWidget *editor=nullptr, QWidget *parent=nullptr)
Constructor.
Represents a vector layer which manages a vector based data sets.
void initWidget(QWidget *editor) override
This method should initialize the editor widget with runtime data.
QVariant::Type type
Definition: qgsfield.h:55