45 : QAbstractTableModel( parent )
46 , mLayer( layerCache->layer() )
47 , mLayerCache( layerCache )
56 mFeat.
setId( std::numeric_limits<int>::min() );
71 mIsCleaningUpAfterRollback =
true;
72 bulkEditCommandEnded();
73 mIsCleaningUpAfterRollback =
false;
82bool QgsAttributeTableModel::loadFeatureAtId(
QgsFeatureId fid )
const
86 if ( fid == std::numeric_limits<int>::min() )
94bool QgsAttributeTableModel::loadFeatureAtId(
QgsFeatureId fid,
int fieldIdx )
const
100 return loadFeatureAtId( fid );
103 if ( fid == std::numeric_limits<int>::min() )
112 return mExtraColumns;
119 beginInsertColumns( QModelIndex(), mFieldCount + mExtraColumns, mFieldCount +
extraColumns - 1 );
125 beginRemoveColumns( QModelIndex(), mFieldCount +
extraColumns, mFieldCount + mExtraColumns - 1 );
131void QgsAttributeTableModel::featuresDeleted(
const QgsFeatureIds &fids )
135 const auto constFids = fids;
140 const int row =
idToRow( fid );
145 std::sort( rows.begin(), rows.end() );
149 int currentRowCount = 0;
153 const auto constRows = rows;
154 for (
const int row : constRows )
157 qDebug() <<
"Row: " << row <<
", begin " << beginRow <<
", last " << lastRow <<
", current " << currentRowCount <<
", removed " << removedRows;
164 if ( row != lastRow + 1 && lastRow != -1 )
166 if ( rows.count() > 100 && currentRowCount < 10 )
171 removeRows( beginRow - removedRows, currentRowCount );
174 removedRows += currentRowCount;
184 removeRows( beginRow - removedRows, currentRowCount );
192 if ( row < 0 || count < 1 )
195 if ( !mResettingModel )
197 beginRemoveRows( parent, row, row + count - 1 );
202 QgsDebugMsgLevel( QStringLiteral(
"remove %2 rows at %1 (rows %3, ids %4)" ).arg( row ).arg( count ).arg( mRowIdMap.size() ).arg( mIdRowMap.size() ), 3 );
205 if ( mBulkEditCommandRunning && !mResettingModel )
207 for (
int i = row; i < row + count; i++ )
210 mInsertedRowsChanges.removeOne( fid );
215 for (
int i = row; i < row + count; i++ )
217 for ( SortCache &cache : mSortCaches )
218 cache.sortCache.remove( mRowIdMap[i] );
219 mIdRowMap.remove( mRowIdMap[i] );
220 mRowIdMap.remove( i );
224 const int n = mRowIdMap.size() + count;
225 for (
int i = row + count; i < n; i++ )
228 mIdRowMap[id] -= count;
229 mRowIdMap[i - count] = id;
230 mRowIdMap.remove( i );
236 QgsDebugMsgLevel( QStringLiteral(
"after removal rows %1, ids %2" ).arg( mRowIdMap.size() ).arg( mIdRowMap.size() ), 4 );
238 for ( QHash<QgsFeatureId, int>::const_iterator it = mIdRowMap.constBegin(); it != mIdRowMap.constEnd(); ++it )
242 for ( QHash<int, QgsFeatureId>::const_iterator it = mRowIdMap.constBegin(); it != mRowIdMap.constEnd(); ++it )
247 Q_ASSERT( mRowIdMap.size() == mIdRowMap.size() );
249 if ( !mResettingModel )
255void QgsAttributeTableModel::featureAdded(
QgsFeatureId fid )
260 if ( mFeat.
id() != fid )
261 featOk = loadFeatureAtId( fid );
265 for ( SortCache &cache : mSortCaches )
267 if ( cache.sortFieldIndex >= 0 )
269 const WidgetData &widgetData = getWidgetData( cache.sortFieldIndex );
270 const QVariant sortValue = widgetData.fieldFormatter->sortValue( mLayer, cache.sortFieldIndex, widgetData.config, widgetData.cache, mFeat.
attribute( cache.sortFieldIndex ) );
271 cache.sortCache.insert( mFeat.
id(), sortValue );
273 else if ( cache.sortCacheExpression.isValid() )
276 cache.sortCache[mFeat.
id()] = cache.sortCacheExpression.evaluate( &mExpressionContext );
281 if ( ! mIdRowMap.contains( fid ) )
283 const int n = mRowIdMap.size();
284 if ( !mResettingModel )
285 beginInsertRows( QModelIndex(), n, n );
286 mIdRowMap.insert( fid, n );
287 mRowIdMap.insert( n, fid );
288 if ( !mResettingModel )
291 if ( mBulkEditCommandRunning && !mResettingModel )
293 mInsertedRowsChanges.append( fid );
299void QgsAttributeTableModel::updatedFields()
305void QgsAttributeTableModel::editCommandEnded()
309 bulkEditCommandEnded( );
312void QgsAttributeTableModel::attributeDeleted(
int idx )
315 for (
const SortCache &cache : mSortCaches )
317 if ( cache.sortCacheAttributes.contains( idx ) )
325void QgsAttributeTableModel::layerDeleted()
327 mLayerCache =
nullptr;
332 mWidgetDatas.clear();
335void QgsAttributeTableModel::fieldFormatterRemoved(
QgsFieldFormatter *fieldFormatter )
337 for ( WidgetData &widgetData : mWidgetDatas )
339 if ( widgetData.fieldFormatter == fieldFormatter )
344void QgsAttributeTableModel::attributeValueChanged(
QgsFeatureId fid,
int idx,
const QVariant &value )
347 if ( mBulkEditCommandRunning )
349 mAttributeValueChanges.insert( QPair<QgsFeatureId, int>( fid, idx ), value );
354 for ( SortCache &cache : mSortCaches )
356 if ( cache.sortCacheAttributes.contains( idx ) )
358 if ( cache.sortFieldIndex == -1 )
360 if ( loadFeatureAtId( fid ) )
363 cache.sortCache[fid] = cache.sortCacheExpression.evaluate( &mExpressionContext );
368 const WidgetData &widgetData = getWidgetData( cache.sortFieldIndex );
369 const QVariant sortValue = widgetData.fieldFormatter->representValue( mLayer, cache.sortFieldIndex, widgetData.config, widgetData.cache, value );
370 cache.sortCache.insert( fid, sortValue );
377 if ( loadFeatureAtId( fid ) )
379 const QModelIndex modelIndex = index(
idToRow( fid ),
fieldCol( idx ) );
380 setData( modelIndex, value, Qt::EditRole );
381 emit dataChanged( modelIndex, modelIndex, QVector<int>() << Qt::DisplayRole );
386 if ( loadFeatureAtId( fid ) )
390 if ( !mIdRowMap.contains( fid ) )
398 const QModelIndex modelIndex = index(
idToRow( fid ),
fieldCol( idx ) );
399 setData( modelIndex, value, Qt::EditRole );
400 emit dataChanged( modelIndex, modelIndex, QVector<int>() << Qt::DisplayRole );
405 if ( mIdRowMap.contains( fid ) )
416void QgsAttributeTableModel::loadAttributes()
424 if ( mFields == fields )
429 bool ins =
false, rm =
false;
433 mWidgetDatas.clear();
435 for (
int idx = 0; idx < fields.
count(); ++idx )
440 if ( mFieldCount + mExtraColumns < attributes.size() + mExtraColumns )
443 beginInsertColumns( QModelIndex(), mFieldCount + mExtraColumns, attributes.size() - 1 );
445 else if ( attributes.size() + mExtraColumns < mFieldCount + mExtraColumns )
448 beginRemoveColumns( QModelIndex(), attributes.size(), mFieldCount + mExtraColumns - 1 );
451 mFieldCount = attributes.size();
452 mAttributes = attributes;
453 mWidgetDatas.resize( mFieldCount );
455 for ( SortCache &cache : mSortCaches )
457 if ( cache.sortFieldIndex >= mAttributes.count() )
458 cache.sortFieldIndex = -1;
480 mResettingModel =
true;
502 if ( t.elapsed() > 1000 )
511 featureAdded( mFeat.
id() );
520 mResettingModel =
false;
526 if ( fieldName.isNull() )
528 mRowStylesMap.clear();
529 mConstraintStylesMap.clear();
535 if ( fieldIndex == -1 )
539 const int col =
fieldCol( fieldIndex );
540 emit dataChanged( index( 0, col ), index(
rowCount() - 1, col ) );
553 mRowIdMap.remove( rowA );
554 mRowIdMap.remove( rowB );
555 mRowIdMap.insert( rowA, b );
556 mRowIdMap.insert( rowB, a );
558 mIdRowMap.remove( a );
559 mIdRowMap.remove( b );
560 mIdRowMap.insert( a, rowB );
561 mIdRowMap.insert( b, rowA );
562 Q_ASSERT( mRowIdMap.size() == mIdRowMap.size() );
570 if ( !mIdRowMap.contains(
id ) )
572 QgsDebugError( QStringLiteral(
"idToRow: id %1 not in the map" ).arg(
id ) );
576 return mIdRowMap[id];
581 return index(
idToRow(
id ), 0 );
586 QModelIndexList indexes;
590 indexes.reserve( columns );
591 for (
int column = 0; column < columns; ++column )
593 indexes.append( index( row, column ) );
601 if ( !mRowIdMap.contains( row ) )
603 QgsDebugError( QStringLiteral(
"rowToId: row %1 not in the map" ).arg( row ) );
605 return std::numeric_limits<int>::min();
608 return mRowIdMap[row];
613 return mAttributes[col];
618 return mAttributes.indexOf( idx );
624 return mRowIdMap.size();
630 return std::max( 1, mFieldCount + mExtraColumns );
638 if ( role == Qt::DisplayRole )
640 if ( orientation == Qt::Vertical )
642 return QVariant( section );
644 else if ( section >= 0 && section < mFieldCount )
646 const QString attributeName = mLayer->
fields().
at( mAttributes.at( section ) ).
displayName();
647 return QVariant( attributeName );
651 return tr(
"extra column" );
654 else if ( role == Qt::ToolTipRole )
656 if ( orientation == Qt::Vertical )
659 return tr(
"Feature ID: %1" ).arg(
rowToId( section ) );
675 if ( !index.isValid() || !mLayer ||
676 ( role != Qt::TextAlignmentRole
677 && role != Qt::DisplayRole
678 && role != Qt::ToolTipRole
679 && role != Qt::EditRole
682 && role != Qt::BackgroundRole
683 && role != Qt::ForegroundRole
684 && role != Qt::DecorationRole
685 && role != Qt::FontRole
696 if ( index.column() >= mFieldCount )
699 const int fieldId = mAttributes.at( index.column() );
706 const unsigned long cacheIndex = role -
static_cast< int >(
CustomRole::Sort );
707 if ( cacheIndex < mSortCaches.size() )
708 return mSortCaches.at( cacheIndex ).sortCache.value( rowId );
715 if ( role == Qt::TextAlignmentRole )
717 const WidgetData &widgetData = getWidgetData( index.column() );
718 return static_cast<Qt::Alignment::Int
>( widgetData.fieldFormatter->alignmentFlag( mLayer, fieldId, widgetData.config ) | Qt::AlignVCenter );
723 if ( !loadFeatureAtId( rowId, fieldId ) )
724 return QVariant(
"ERROR" );
726 if ( mFeat.
id() != rowId )
727 return QVariant(
"ERROR" );
730 QVariant val = mFeat.
attribute( fieldId );
734 case Qt::DisplayRole:
736 const WidgetData &widgetData = getWidgetData( index.column() );
737 QString s = widgetData.fieldFormatter->representValue( mLayer, fieldId, widgetData.config, widgetData.cache, val );
739 constexpr int MAX_STRING_LENGTH = 10 * 1000;
740 if (
static_cast<size_t>( s.size() ) >
static_cast<size_t>( MAX_STRING_LENGTH ) )
742 s.resize( MAX_STRING_LENGTH );
743 s.append( tr(
"... truncated ..." ) );
747 case Qt::ToolTipRole:
749 const WidgetData &widgetData = getWidgetData( index.column() );
750 QString tooltip = widgetData.fieldFormatter->representValue( mLayer, fieldId, widgetData.config, widgetData.cache, val );
753 tooltip = tr(
"%1 (Ctrl+click to open)" ).arg( tooltip );
760 case Qt::BackgroundRole:
761 case Qt::ForegroundRole:
762 case Qt::DecorationRole:
766 QList<QgsConditionalStyle> styles;
767 if ( mRowStylesMap.contains( mFeat.
id() ) )
769 styles = mRowStylesMap[mFeat.
id()];
774 mRowStylesMap.insert( mFeat.
id(), styles );
781 if ( mConstraintStylesMap.contains( mFeat.
id() ) &&
782 mConstraintStylesMap[mFeat.
id()].contains( fieldId ) )
784 constraintstyle = mConstraintStylesMap[mFeat.
id()][fieldId];
800 mConstraintStylesMap[mFeat.
id()].insert( fieldId, constraintstyle );
806 styles.insert( 0, rowstyle );
807 styles.insert( 0, constraintstyle );
814 if ( role == Qt::ForegroundRole )
816 if ( role == Qt::DecorationRole )
818 if ( role == Qt::FontRole )
823 if ( role == Qt::ForegroundRole )
825 return QColor( Qt::blue );
827 else if ( role == Qt::FontRole )
830 font.setUnderline(
true );
846 if ( !index.isValid() || index.column() >= mFieldCount || role != Qt::EditRole || !mLayer->
isEditable() )
849 mRowStylesMap.remove( mFeat.
id() );
850 mConstraintStylesMap.remove( mFeat.
id() );
860 if ( !index.isValid() )
861 return Qt::ItemIsEnabled;
863 if ( index.column() >= mFieldCount || !mLayer )
864 return Qt::NoItemFlags;
866 Qt::ItemFlags
flags = QAbstractTableModel::flags( index );
868 const int fieldIndex = mAttributes[index.column()];
872 flags |= Qt::ItemIsEditable;
877void QgsAttributeTableModel::bulkEditCommandStarted()
879 mBulkEditCommandRunning =
true;
880 mAttributeValueChanges.clear();
883void QgsAttributeTableModel::bulkEditCommandEnded()
885 mBulkEditCommandRunning =
false;
889 const long long fullModelUpdateThreshold = std::min<long long >( mLayerCache->
cacheSize(), std::ceil(
rowCount() * 0.5 ) );
890 bool fullModelUpdate =
false;
893 if ( mInsertedRowsChanges.size() > fullModelUpdateThreshold )
895 fullModelUpdate =
true;
899 QSet< QgsFeatureId > changedRows;
900 changedRows.reserve( mAttributeValueChanges.size() );
902 for (
auto it = mAttributeValueChanges.constBegin(); it != mAttributeValueChanges.constEnd(); ++it )
904 changedRows.insert( it.key().first );
905 if ( changedRows.size() > fullModelUpdateThreshold )
907 fullModelUpdate =
true;
913 QgsDebugMsgLevel( QStringLiteral(
"Bulk edit command ended modified rows over (%3), cache size is %1, starting %2 update." )
915 .arg( fullModelUpdate ? QStringLiteral(
"full" ) : QStringLiteral(
"incremental" ) )
920 if ( mIsCleaningUpAfterRollback )
922 for (
const int fid : std::as_const( mInsertedRowsChanges ) )
924 const int row(
idToRow( fid ) );
934 if ( fullModelUpdate )
947 const auto keys = mAttributeValueChanges.keys();
948 for (
const auto &key : keys )
950 attributeValueChanged( key.first, key.second, mAttributeValueChanges.value( key ) );
951 const int row(
idToRow( key.first ) );
952 const int col(
fieldCol( key.second ) );
953 minRow = std::min<int>( row, minRow );
954 minCol = std::min<int>( col, minCol );
955 maxRow = std::max<int>( row, maxRow );
956 maxCol = std::max<int>( col, maxCol );
959 emit dataChanged( createIndex( minRow, minCol ), createIndex( maxRow, maxCol ) );
961 mAttributeValueChanges.clear();
966 mFeat.
setId( std::numeric_limits<int>::min() );
967 emit dataChanged( index1, index2 );
991 for (
int i = 0; i < mAttributes.size(); i++ )
993 f.
setAttribute( mAttributes[i],
data( index( idx.row(), i ), Qt::EditRole ) );
1001 if ( column == -1 || column >= mAttributes.count() )
1013 if ( cacheIndex >= mSortCaches.size() )
1015 mSortCaches.resize( cacheIndex + 1 );
1017 SortCache &cache = mSortCaches[cacheIndex];
1018 cache.sortCache.clear();
1019 cache.sortCacheAttributes.clear();
1020 cache.sortFieldIndex = -1;
1021 if ( !expressionString.isEmpty() )
1022 cache.sortCacheExpression =
QgsExpression( expressionString );
1030 WidgetData widgetData;
1032 if ( cache.sortCacheExpression.isField() )
1038 if ( cache.sortFieldIndex == -1 )
1040 cache.sortCacheExpression.prepare( &mExpressionContext );
1042 const QSet<QString> &referencedColumns = cache.sortCacheExpression.referencedColumns();
1044 for (
const QString &col : referencedColumns )
1051 cache.sortCacheAttributes.append( cache.sortFieldIndex );
1053 widgetData = getWidgetData( cache.sortFieldIndex );
1063 if ( cache.sortFieldIndex == -1 )
1066 const QVariant cacheValue = cache.sortCacheExpression.evaluate( &mExpressionContext );
1067 cache.sortCache.insert( f.
id(), cacheValue );
1071 const QVariant sortValue = widgetData.fieldFormatter->sortValue( mLayer, cache.sortFieldIndex, widgetData.config, widgetData.cache, f.
attribute( cache.sortFieldIndex ) );
1072 cache.sortCache.insert( f.
id(), sortValue );
1079 QString expressionString;
1081 if ( cacheIndex >= mSortCaches.size() )
1082 return expressionString;
1084 const QgsExpression &expression = mSortCaches[cacheIndex].sortCacheExpression;
1089 expressionString = QString();
1091 return expressionString;
1102 for (
unsigned long i = 0; i < mSortCaches.size(); ++i )
1111 return mFeatureRequest;
1114const QgsAttributeTableModel::WidgetData &QgsAttributeTableModel::getWidgetData(
int column )
const
1116 Q_ASSERT( column >= 0 && column < mAttributes.size() );
1118 WidgetData &widgetData = mWidgetDatas[ column ];
1119 if ( !widgetData.loaded )
1121 const int idx =
fieldIdx( column );
1124 widgetData.config = setup.
config();
1125 widgetData.cache = widgetData.fieldFormatter->createCache( mLayer, idx, setup.
config() );
1126 widgetData.loaded =
true;
@ NoFilter
No filter is applied.
@ NoGeometry
Geometry is not required. It may still be returned if e.g. required for a filter condition.
@ NoFlags
No flags are set.
void doAction(QUuid actionId, const QgsFeature &feature, int defaultValueIndex=0, const QgsExpressionContextScope &scope=QgsExpressionContextScope())
Does the given action.
static QgsFieldFormatterRegistry * fieldFormatterRegistry()
Gets the registry of available field formatters.
const QgsFeatureRequest & request() const
Gets the the feature request.
bool removeRows(int row, int count, const QModelIndex &parent=QModelIndex()) override
Remove rows.
Qt::ItemFlags flags(const QModelIndex &index) const override
Returns item flags for the index.
QgsFeature feature(const QModelIndex &idx) const
Returns the feature attributes at given model index.
void resetModel()
Resets the model.
void fieldConditionalStyleChanged(const QString &fieldName)
Handles updating the model when the conditional style for a field changes.
QString sortCacheExpression(unsigned long cacheIndex=0) const
The expression which was used to fill the sorting cache at index cacheIndex.
int fieldIdx(int col) const
Gets field index from column.
QgsAttributeTableModel(QgsVectorLayerCache *layerCache, QObject *parent=nullptr)
Constructor.
void swapRows(QgsFeatureId a, QgsFeatureId b)
Swaps two rows.
void modelChanged()
Emitted when the model has been changed.
void executeMapLayerAction(QgsMapLayerAction *action, const QModelIndex &idx, const QgsMapLayerActionContext &context=QgsMapLayerActionContext()) const
Execute a QgsMapLayerAction.
void progress(int i, bool &cancel)
void setRequest(const QgsFeatureRequest &request)
Set a request that will be used to fill this attribute table model.
bool setData(const QModelIndex &index, const QVariant &value, int role=Qt::EditRole) override
Updates data on given index.
int rowCount(const QModelIndex &parent=QModelIndex()) const override
Returns the number of rows.
QModelIndex idToIndex(QgsFeatureId id) const
int extraColumns() const
Empty extra columns to announce from this model.
QgsVectorLayerCache * layerCache() const
Returns the layer cache this model uses as backend.
void finished()
Emitted when the model has completely loaded all features.
int columnCount(const QModelIndex &parent=QModelIndex()) const override
Returns the number of columns.
QVariant headerData(int section, Qt::Orientation orientation, int role=Qt::DisplayRole) const override
Returns header data.
QModelIndexList idToIndexList(QgsFeatureId id) const
void prefetchSortData(const QString &expression, unsigned long cacheIndex=0)
Prefetches the entire data for an expression.
QgsFeatureId rowToId(int row) const
Maps row to feature id.
int idToRow(QgsFeatureId id) const
Maps feature id to table row.
virtual void loadLayer()
Loads the layer into the model Preferably to be called, before using this model as source for any oth...
void setExtraColumns(int extraColumns)
Empty extra columns to announce from this model.
void prefetchColumnData(int column)
Caches the entire data for one column.
int fieldCol(int idx) const
Gets column from field index.
void reload(const QModelIndex &index1, const QModelIndex &index2)
Reloads the model data between indices.
@ FeatureId
Get the feature id of the feature in this row.
@ Sort
Role used for sorting start here.
@ FieldIndex
Get the field index of this column.
void executeAction(QUuid action, const QModelIndex &idx) const
Execute an action.
QVariant data(const QModelIndex &index, int role) const override
Returns data on the given index.
QgsConditionalStyles rowStyles() const
Returns a list of row styles associated with the layer.
QgsConditionalStyle constraintFailureStyles(QgsFieldConstraints::ConstraintStrength strength)
Returns a style associated to a constraint failure.
QList< QgsConditionalStyle > fieldStyles(const QString &fieldName) const
Returns the conditional styles set for the field with matching fieldName.
Conditional styling for a rule.
static QgsConditionalStyle compressStyles(const QList< QgsConditionalStyle > &styles)
Compress a list of styles into a single style.
static QList< QgsConditionalStyle > matchingConditionalStyles(const QList< QgsConditionalStyle > &styles, const QVariant &value, QgsExpressionContext &context)
Find and return the matching styles for the value and feature.
QColor backgroundColor() const
The background color for style.
QColor textColor() const
The text color set for style.
QFont font() const
The font for the style.
bool isValid() const
isValid Check if this rule is valid.
QPixmap icon() const
The icon set for style generated from the set symbol.
bool validBackgroundColor() const
Check if the background color is valid for render.
static QList< QgsExpressionContextScope * > globalProjectLayerScopes(const QgsMapLayer *layer)
Creates a list of three scopes: global, layer's project and layer.
void setFeature(const QgsFeature &feature)
Convenience function for setting a feature for the context.
void appendScopes(const QList< QgsExpressionContextScope * > &scopes)
Appends a list of scopes to the end of the context.
An expression node which takes it value from a feature's field.
Class for parsing and evaluation of expressions (formerly called "search strings").
QString expression() const
Returns the original, unmodified expression string.
static QString quotedColumnRef(QString name)
Returns a quoted column reference (in double quotes)
bool isValid() const
Checks if this expression is valid.
Wrapper for iterator of features from vector data provider or vector layer.
bool nextFeature(QgsFeature &f)
Fetch next feature and stores in f, returns true on success.
This class wraps a request for features to a vector layer (or directly its vector data provider).
QgsFeatureRequest & setFlags(Qgis::FeatureRequestFlags flags)
Sets flags that affect how features will be fetched.
Qgis::FeatureRequestFilterType filterType() const
Returns the attribute/ID filter type which is currently set on this request.
Qgis::FeatureRequestFlags flags() const
Returns the flags which affect how features are fetched.
bool acceptFeature(const QgsFeature &feature)
Check if a feature is accepted by this requests filter.
bool compare(const QgsFeatureRequest &other) const
Compare two requests for equality, ignoring Expression Context, Transform Error Callback,...
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.
void initAttributes(int fieldCount)
Initialize this feature with the given number of fields.
void setId(QgsFeatureId id)
Sets the feature id for this feature.
bool isValid() const
Returns the validity of this feature.
Q_INVOKABLE QVariant attribute(const QString &name) const
Lookup attribute value by attribute name.
@ ConstraintStrengthSoft
User is warned if constraint is violated but feature can still be accepted.
@ ConstraintStrengthHard
Constraint must be honored before feature can be accepted.
static QString fieldToolTipExtended(const QgsField &field, const QgsVectorLayer *layer)
Returns a HTML formatted tooltip string for a field, containing details like the field name,...
Encapsulate a field in an attribute table or data source.
QString displayName() const
Returns the name to use when displaying this field.
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.
static QgsEditorWidgetRegistry * editorWidgetRegistry()
Returns the global editor widget registry, used for managing all known edit widget factories.
static int debugLevel()
Reads the environment variable QGIS_DEBUG and converts it to int.
Encapsulates the context in which a QgsMapLayerAction action is executed.
An action which can run on map layers The class can be used in two manners:
virtual Q_DECL_DEPRECATED void triggerForFeature(QgsMapLayer *layer, const QgsFeature &feature)
Triggers the action with the specified layer and feature.
void dataChanged()
Data of layer changed.
static bool isUrl(const QString &string)
Returns whether the string is a URL (http,https,ftp,file)
This class caches features of a given QgsVectorLayer.
void invalidated()
The cache has been invalidated and cleared.
void featureAdded(QgsFeatureId fid)
Emitted when a new feature has been added to the layer and this cache.
void cachedLayerDeleted()
Is emitted when the cached layer is deleted.
void attributeValueChanged(QgsFeatureId fid, int field, const QVariant &value)
Emitted when an attribute is changed.
QgsVectorLayer * layer()
Returns the layer to which this cache belongs.
bool featureAtIdWithAllAttributes(QgsFeatureId featureId, QgsFeature &feature, bool skipCache=false)
Gets the feature at the given feature id with all attributes, if the cached feature already contains ...
int cacheSize()
Returns the maximum number of features this cache will hold.
QgsAttributeList cacheSubsetOfAttributes() const
Returns the list (possibly a subset) of cached attributes.
QgsFeatureIterator getFeatures(const QgsFeatureRequest &featureRequest=QgsFeatureRequest())
Query this VectorLayerCache for features.
bool featureAtId(QgsFeatureId featureId, QgsFeature &feature, bool skipCache=false)
Gets the feature at the given feature id.
static bool fieldIsEditable(const QgsVectorLayer *layer, int fieldIndex, const QgsFeature &feature)
Tests whether a field is editable for a particular feature.
static bool attributeHasConstraints(const QgsVectorLayer *layer, int attributeIndex)
Returns true if a feature attribute has active constraints.
static bool validateAttribute(const QgsVectorLayer *layer, const QgsFeature &feature, int attributeIndex, QStringList &errors, QgsFieldConstraints::ConstraintStrength strength=QgsFieldConstraints::ConstraintStrengthNotSet, QgsFieldConstraints::ConstraintOrigin origin=QgsFieldConstraints::ConstraintOriginNotSet)
Tests a feature attribute value to check whether it passes all constraints which are present on the c...
bool isModified() const override
Returns true if the provider has been modified since the last commit.
void editCommandStarted(const QString &text)
Signal emitted when a new edit command has been started.
bool isSpatial() const FINAL
Returns true if this is a geometry layer and false in case of NoGeometry (table only) or UnknownGeome...
void featuresDeleted(const QgsFeatureIds &fids)
Emitted when features have been deleted.
bool isEditable() const FINAL
Returns true if the provider is in editing mode.
void attributeDeleted(int idx)
Will be emitted, when an attribute has been deleted from this vector layer.
QgsActionManager * actions()
Returns all layer actions defined on this layer.
void editCommandEnded()
Signal emitted, when an edit command successfully ended.
Q_INVOKABLE Qgis::GeometryType geometryType() const
Returns point, line or polygon.
void afterRollBack()
Emitted after changes are rolled back.
void updatedFields()
Emitted whenever the fields available from this layer have been changed.
QgsConditionalLayerStyles * conditionalStyles() const
Returns the conditional styles that are set for this layer.
void beforeRollBack()
Emitted before changes are rolled back.
#define Q_NOWARN_DEPRECATED_POP
QString qgsEnumValueToKey(const T &value, bool *returnOk=nullptr)
Returns the value for the given key of an enum.
#define Q_NOWARN_DEPRECATED_PUSH
QSet< QgsFeatureId > QgsFeatureIds
#define FID_TO_STRING(fid)
qint64 QgsFeatureId
64 bit feature ids negative numbers are used for uncommitted/newly added features
QList< int > QgsAttributeList
#define QgsDebugMsgLevel(str, level)
#define QgsDebugError(str)