17#include "moc_qgsvaluerelationwidgetwrapper.cpp"
30#include <QStringListModel>
36#include <QStandardItemModel>
39#include <nlohmann/json.hpp>
40using namespace nlohmann;
43QgsFilteredTableWidget::QgsFilteredTableWidget( QWidget *parent,
bool showSearch,
bool displayGroupName )
45 , mDisplayGroupName( displayGroupName )
48 mSearchWidget->setShowSearchIcon(
true );
49 mSearchWidget->setShowClearButton(
true );
50 mTableWidget =
new QTableWidget(
this );
51 mTableWidget->horizontalHeader()->setSectionResizeMode( QHeaderView::Stretch );
52 mTableWidget->horizontalHeader()->setVisible(
false );
53 mTableWidget->verticalHeader()->setSectionResizeMode( QHeaderView::Stretch );
54 mTableWidget->verticalHeader()->setVisible(
false );
55 mTableWidget->setShowGrid(
false );
56 mTableWidget->setEditTriggers( QAbstractItemView::NoEditTriggers );
57 mTableWidget->setSelectionMode( QAbstractItemView::NoSelection );
58 mTableWidget->setContextMenuPolicy( Qt::CustomContextMenu );
60 QVBoxLayout *layout =
new QVBoxLayout();
61 layout->addWidget( mSearchWidget );
62 layout->addWidget( mTableWidget );
63 layout->setContentsMargins( 0, 0, 0, 0 );
64 layout->setSpacing( 0 );
67 mTableWidget->setFocusProxy( mSearchWidget );
68 connect( mSearchWidget, &QgsFilterLineEdit::textChanged,
this, &QgsFilteredTableWidget::filterStringChanged );
69 installEventFilter(
this );
73 mSearchWidget->setVisible(
false );
76 connect( mTableWidget, &QTableWidget::itemChanged,
this, &QgsFilteredTableWidget::itemChanged_p );
77 connect( mTableWidget, &QTableWidget::customContextMenuRequested,
this, &QgsFilteredTableWidget::onTableWidgetCustomContextMenuRequested );
80bool QgsFilteredTableWidget::eventFilter( QObject *watched, QEvent *event )
83 if ( event->type() == QEvent::KeyPress )
85 QKeyEvent *keyEvent =
static_cast<QKeyEvent *
>( event );
86 if ( keyEvent->key() == Qt::Key_Escape && !mSearchWidget->text().isEmpty() )
88 mSearchWidget->clear();
95void QgsFilteredTableWidget::filterStringChanged(
const QString &filterString )
97 auto signalBlockedTableWidget =
whileBlocking( mTableWidget );
98 Q_UNUSED( signalBlockedTableWidget )
100 mTableWidget->clearContents();
101 if ( !mCache.isEmpty() )
104 groups << QVariant();
105 for (
const QPair<QgsValueRelationFieldFormatter::ValueRelationItem, Qt::CheckState> &pair : std::as_const( mCache ) )
107 if ( !groups.contains( pair.first.group ) )
109 groups << pair.first.group;
112 const int groupsCount = mDisplayGroupName ? groups.count() : groups.count() - 1;
114 const int rCount = std::max( 1, (
int ) std::ceil( (
float ) ( mCache.count() + groupsCount ) / (
float ) mColumnCount ) );
115 mTableWidget->setRowCount( rCount );
119 QVariant currentGroup;
120 for (
const QPair<QgsValueRelationFieldFormatter::ValueRelationItem, Qt::CheckState> &pair : std::as_const( mCache ) )
122 if ( column == mColumnCount )
127 if ( currentGroup != pair.first.group )
129 currentGroup = pair.first.group;
130 if ( mDisplayGroupName || !( row == 0 && column == 0 ) )
132 QTableWidgetItem *item =
new QTableWidgetItem( mDisplayGroupName ? pair.first.group.toString() : QString() );
133 item->setFlags( item->flags() & ~Qt::ItemIsEnabled );
134 mTableWidget->setItem( row, column, item );
136 if ( column == mColumnCount )
143 if ( pair.first.value.contains( filterString, Qt::CaseInsensitive ) )
145 QTableWidgetItem *item =
new QTableWidgetItem( pair.first.value );
146 item->setData( Qt::UserRole, pair.first.key );
147 item->setData( Qt::ToolTipRole, pair.first.description );
148 item->setCheckState( pair.second );
149 item->setFlags( mEnabledTable ? item->flags() | Qt::ItemIsEnabled : item->flags() & ~Qt::ItemIsEnabled );
150 mTableWidget->setItem( row, column, item );
154 mTableWidget->setRowCount( row + 1 );
158QStringList QgsFilteredTableWidget::selection()
const
161 for (
const QPair<QgsValueRelationFieldFormatter::ValueRelationItem, Qt::CheckState> &pair : std::as_const( mCache ) )
163 if ( pair.second == Qt::Checked )
164 sel.append( pair.first.key.toString() );
169void QgsFilteredTableWidget::checkItems(
const QStringList &checked )
171 for ( QPair<QgsValueRelationFieldFormatter::ValueRelationItem, Qt::CheckState> &pair : mCache )
173 const bool isChecked = checked.contains( pair.first.key.toString() );
174 pair.second = isChecked ? Qt::Checked : Qt::Unchecked;
177 filterStringChanged( mSearchWidget->text() );
185 mCache.append( qMakePair( element, Qt::Unchecked ) );
187 filterStringChanged( mSearchWidget->text() );
190void QgsFilteredTableWidget::setIndeterminateState()
192 for (
int rowIndex = 0; rowIndex < mTableWidget->rowCount(); rowIndex++ )
194 for (
int columnIndex = 0; columnIndex < mColumnCount; ++columnIndex )
196 if ( item( rowIndex, columnIndex ) )
198 whileBlocking( mTableWidget )->item( rowIndex, columnIndex )->setCheckState( Qt::PartiallyChecked );
208void QgsFilteredTableWidget::setEnabledTable(
const bool enabled )
210 if ( mEnabledTable == enabled )
213 mEnabledTable = enabled;
215 mSearchWidget->clear();
217 filterStringChanged( mSearchWidget->text() );
220void QgsFilteredTableWidget::setColumnCount(
const int count )
222 mColumnCount = count;
223 mTableWidget->setColumnCount( count );
226void QgsFilteredTableWidget::itemChanged_p( QTableWidgetItem *item )
228 for ( QPair<QgsValueRelationFieldFormatter::ValueRelationItem, Qt::CheckState> &pair : mCache )
230 if ( pair.first.key == item->data( Qt::UserRole ) )
231 pair.second = item->checkState();
233 emit itemChanged( item );
236void QgsFilteredTableWidget::onTableWidgetCustomContextMenuRequested(
const QPoint &pos )
241 QAction *actionTableWidgetSelectAll =
new QAction( tr(
"Select All" ),
this );
242 QAction *actionTableWidgetDeselectAll =
new QAction( tr(
"Deselect All" ),
this );
243 connect( actionTableWidgetSelectAll, &QAction::triggered,
this, &QgsFilteredTableWidget::onTableWidgetMenuActionSelectAllTriggered );
244 connect( actionTableWidgetDeselectAll, &QAction::triggered,
this, &QgsFilteredTableWidget::onTableWidgetMenuActionDeselectAllTriggered );
246 QMenu *tableWidgetMenu =
new QMenu( mTableWidget );
247 tableWidgetMenu->addAction( actionTableWidgetSelectAll );
248 tableWidgetMenu->addAction( actionTableWidgetDeselectAll );
250 tableWidgetMenu->exec( QCursor::pos() );
253 disconnect( actionTableWidgetSelectAll, &QAction::triggered,
nullptr,
nullptr );
254 disconnect( actionTableWidgetDeselectAll, &QAction::triggered,
nullptr,
nullptr );
255 actionTableWidgetSelectAll->deleteLater();
256 actionTableWidgetDeselectAll->deleteLater();
259 tableWidgetMenu->deleteLater();
262void QgsFilteredTableWidget::onTableWidgetMenuActionSelectAllTriggered()
264 for (
int rowIndex = 0; rowIndex < mTableWidget->rowCount(); ++rowIndex )
266 for (
int columnIndex = 0; columnIndex < mTableWidget->columnCount(); ++columnIndex )
268 QTableWidgetItem *item =
whileBlocking( mTableWidget )->item( rowIndex, columnIndex );
269 if ( item && ( item->flags() & Qt::ItemIsEnabled ) )
271 item->setCheckState( Qt::Checked );
277void QgsFilteredTableWidget::onTableWidgetMenuActionDeselectAllTriggered()
279 for (
int rowIndex = 0; rowIndex < mTableWidget->rowCount(); ++rowIndex )
281 for (
int columnIndex = 0; columnIndex < mTableWidget->columnCount(); ++columnIndex )
283 QTableWidgetItem *item =
whileBlocking( mTableWidget )->item( rowIndex, columnIndex );
284 if ( item && ( item->flags() & Qt::ItemIsEnabled ) )
286 item->setCheckState( Qt::Unchecked );
305 int cbxIdx = mComboBox->currentIndex();
308 v = mComboBox->currentData();
313 else if ( mTableWidget )
315 QStringList selection = mTableWidget->selection();
318 if ( selection.isEmpty() && !
config( QStringLiteral(
"AllowNull" ) ).toBool() )
325 for (
const QString &s : std::as_const( selection ) )
328 const QMetaType::Type type { fkType() };
331 case QMetaType::Type::Int:
332 vl.push_back( s.toInt() );
334 case QMetaType::Type::LongLong:
335 vl.push_back( s.toLongLong() );
343 if (
layer()->fields().at(
fieldIdx() ).type() == QMetaType::Type::QVariantMap ||
layer()->fields().at(
fieldIdx() ).type() == QMetaType::Type::QVariantList )
353 else if ( mLineEdit )
357 if ( item.value == mLineEdit->text() )
374 mExpression =
config().value( QStringLiteral(
"FilterExpression" ) ).toString();
376 const bool allowMulti =
config( QStringLiteral(
"AllowMulti" ) ).toBool();
377 const bool useCompleter =
config( QStringLiteral(
"UseCompleter" ) ).toBool();
380 const bool displayGroupName =
config( QStringLiteral(
"DisplayGroupName" ) ).toBool();
381 return new QgsFilteredTableWidget( parent, useCompleter, displayGroupName );
383 else if ( useCompleter )
390 combo->setMinimumContentsLength( 1 );
391 combo->setSizeAdjustPolicy( QComboBox::SizeAdjustPolicy::AdjustToMinimumContentsLengthWithIcon );
398 mComboBox = qobject_cast<QComboBox *>( editor );
399 mTableWidget = qobject_cast<QgsFilteredTableWidget *>( editor );
400 mLineEdit = qobject_cast<QLineEdit *>( editor );
407 mComboBox->view()->setVerticalScrollBarPolicy( Qt::ScrollBarAsNeeded );
410 else if ( mTableWidget )
414 else if ( mLineEdit )
416 if (
QgsFilterLineEdit *filterLineEdit = qobject_cast<QgsFilterLineEdit *>( editor ) )
419 if ( mSubWidgetSignalBlocking == 0 )
425 connect( mLineEdit, &QLineEdit::textChanged,
this, &QgsValueRelationWidgetWrapper::emitValueChangedInternal, Qt::UniqueConnection );
432 return mTableWidget || mLineEdit || mComboBox;
435void QgsValueRelationWidgetWrapper::updateValues(
const QVariant &value,
const QVariantList & )
437 updateValue(
value,
true );
440void QgsValueRelationWidgetWrapper::updateValue(
const QVariant &value,
bool forceComboInsertion )
444 QStringList checkList;
446 if (
layer()->fields().at(
fieldIdx() ).type() == QMetaType::Type::QVariantMap ||
layer()->fields().at(
fieldIdx() ).type() == QMetaType::Type::QVariantList )
448 checkList =
value.toStringList();
455 mTableWidget->checkItems( checkList );
457 else if ( mComboBox )
462 for (
int i = 0; i < mComboBox->count(); i++ )
464 QVariant v( mComboBox->itemData( i ) );
477 mComboBox->setCurrentIndex( -1 );
481 mComboBox->addItem(
value.toString().prepend(
'(' ).append(
')' ),
value );
482 mComboBox->setCurrentIndex( mComboBox->findData(
value ) );
487 mComboBox->setCurrentIndex( idx );
490 else if ( mLineEdit )
492 mSubWidgetSignalBlocking++;
494 bool wasFound {
false };
497 if ( i.key ==
value )
499 mLineEdit->setText( i.value );
507 mLineEdit->setText( tr(
"(no selection)" ) );
509 mSubWidgetSignalBlocking--;
520 QVariant oldValue(
value() );
528 updateValue( oldValue,
false );
543 QString attributeName( formFields.
names().at(
fieldIdx() ) );
568 && !
config( QStringLiteral(
"AllowNull" ) ).toBool() )
572 QTimer::singleShot( 0,
this, [
this] {
573 if ( !mCache.isEmpty() )
575 updateValues( formFeature().attribute( fieldIdx() ).isValid() ? formFeature().attribute( fieldIdx() ) : mCache.at( 0 ).key );
581int QgsValueRelationWidgetWrapper::columnCount()
const
583 return std::max( 1,
config( QStringLiteral(
"NofColumns" ) ).toInt() );
587QMetaType::Type QgsValueRelationWidgetWrapper::fkType()
const
596 return fields.
at( idx ).
type();
599 return QMetaType::Type::UnknownType;
602void QgsValueRelationWidgetWrapper::populate()
607 if (
context().parentFormFeature().isValid() )
616 else if ( mCache.empty() )
623 mComboBox->blockSignals(
true );
625 const bool allowNull =
config( QStringLiteral(
"AllowNull" ) ).toBool();
631 if ( !mCache.isEmpty() )
633 QVariant currentGroup;
634 QStandardItemModel *model = qobject_cast<QStandardItemModel *>( mComboBox->model() );
635 const bool displayGroupName =
config( QStringLiteral(
"DisplayGroupName" ) ).toBool();
638 if ( currentGroup != element.group )
640 if ( mComboBox->count() > ( allowNull ? 1 : 0 ) )
642 mComboBox->insertSeparator( mComboBox->count() );
644 if ( displayGroupName )
646 mComboBox->addItem( element.group.toString() );
647 QStandardItem *item = model->item( mComboBox->count() - 1 );
648 item->setFlags( item->flags() & ~Qt::ItemIsEnabled );
650 currentGroup = element.group;
653 mComboBox->addItem( element.value, element.key );
655 if ( !element.description.isEmpty() )
657 mComboBox->setItemData( mComboBox->count() - 1, element.description, Qt::ToolTipRole );
661 mComboBox->blockSignals(
false );
663 else if ( mTableWidget )
665 mTableWidget->setColumnCount( columnCount() );
666 mTableWidget->populate( mCache );
668 else if ( mLineEdit )
671 values.reserve( mCache.size() );
676 QStringListModel *m =
new QStringListModel( values, mLineEdit );
677 QCompleter *completer =
new QCompleter( m, mLineEdit );
679 const Qt::MatchFlags completerMatchFlags {
config().contains( QStringLiteral(
"CompleterMatchFlags" ) ) ?
static_cast<Qt::MatchFlags
>(
config().value( QStringLiteral(
"CompleterMatchFlags" ), Qt::MatchFlag::MatchStartsWith ).toInt() ) : Qt::MatchFlag::MatchStartsWith };
681 if ( completerMatchFlags.testFlag( Qt::MatchFlag::MatchContains ) )
683 completer->setFilterMode( Qt::MatchFlag::MatchContains );
687 completer->setFilterMode( Qt::MatchFlag::MatchStartsWith );
689 completer->setCaseSensitivity( Qt::CaseInsensitive );
690 mLineEdit->setCompleter( completer );
698 mTableWidget->setIndeterminateState();
700 else if ( mComboBox )
704 else if ( mLineEdit )
712 if ( mEnabled == enabled )
719 mTableWidget->setEnabledTable( enabled );
731 ctx.setParentFormFeature( feature );
742void QgsValueRelationWidgetWrapper::emitValueChangedInternal(
const QString &
value )
Contains context information for attribute editor widgets.
QgsFeature parentFormFeature() const
Returns the feature of the currently edited parent form in its actual state.
@ MultiEditMode
Multi edit mode, for editing fields of multiple features at once.
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
Q_INVOKABLE bool setAttribute(int field, const QVariant &attr)
Sets an attribute's value by field index.
Q_INVOKABLE QVariant attribute(const QString &name) const
Lookup attribute value by attribute name.
Container of fields for a vector layer.
QgsField at(int i) const
Returns the field at particular index (must be in range 0..N-1).
Q_INVOKABLE int lookupField(const QString &fieldName) const
Looks up field's index from the field name.
QLineEdit subclass with built in support for clearing the widget's value and handling custom null val...
void valueChanged(const QString &value)
Same as textChanged() but with support for null values.
static QString buildArray(const QVariantList &list)
Build a postgres array like formatted list in a string from a QVariantList.
static QgsProject * instance()
Returns the QgsProject singleton instance.
static bool isNull(const QVariant &variant, bool silenceNullWarnings=false)
Returns true if the specified variant should be considered a NULL value.
static QVariant createNullVariant(QMetaType::Type metaType)
Helper method to properly create a null QVariant from a metaType Returns the created QVariant.
Represents a vector layer which manages a vector based dataset.
bool qgsVariantEqual(const QVariant &lhs, const QVariant &rhs)
Compares two QVariant values and returns whether they are equal, two NULL values are always treated a...
#define Q_NOWARN_DEPRECATED_POP
#define Q_NOWARN_DEPRECATED_PUSH
QgsSignalBlocker< Object > whileBlocking(Object *object)
Temporarily blocks signals from a QObject while calling a single method from the object.