Class: QgsLayerTreeFilterProxyModel

class qgis.core.QgsLayerTreeFilterProxyModel(parent: QObject = None)

Bases: PyQt5.QtCore.QSortFilterProxyModel

Constructor

QgsLayerTreeFilterProxyModel is a sort filter proxy model to easily reproduce the legend/layer tree in a tree view. Layers are checkable by default. Symbology nodes will not be shown. Layers can be fitlered by their type.

For more complex use-cases, the model can be re-implemented to allow a different interaction or to add more columns.

New in version 3.14.

Parameters

parent –

QgsLayerTreeFilterProxyModel.beginInsertColumns(self, QModelIndex, int, int)

QgsLayerTreeFilterProxyModel.beginInsertRows(self, QModelIndex, int, int)

QgsLayerTreeFilterProxyModel.beginMoveColumns(self, QModelIndex, int, int, QModelIndex, int) -> bool

QgsLayerTreeFilterProxyModel.beginMoveRows(self, QModelIndex, int, int, QModelIndex, int) -> bool

QgsLayerTreeFilterProxyModel.beginRemoveColumns(self, QModelIndex, int, int)

QgsLayerTreeFilterProxyModel.beginRemoveRows(self, QModelIndex, int, int)

beginResetModel(self)

QgsLayerTreeFilterProxyModel.changePersistentIndex(self, QModelIndex, QModelIndex)

changePersistentIndexList(self, Iterable[QModelIndex], Iterable[QModelIndex])

checkedLayers(self) → List[QgsMapLayer]

Returns the checked layers

Return type

List[QgsMapLayer]

childEvent(self, QChildEvent)

columnCount(self, parent: QModelIndex) → int

Parameters

parent (QModelIndex) –

Return type

int

connectNotify(self, QMetaMethod)

QgsLayerTreeFilterProxyModel.createIndex(self, int, int, object: object = 0) -> QModelIndex

customEvent(self, QEvent)

data(self, index: QModelIndex, role: int) → Any

Parameters

• index (QModelIndex) –

• role (int) –

Return type

Any

QgsLayerTreeFilterProxyModel.decodeData(self, int, int, QModelIndex, QDataStream) -> bool

disconnectNotify(self, QMetaMethod)

encodeData(self, Iterable[QModelIndex], QDataStream)

endInsertColumns(self)

endInsertRows(self)

endMoveColumns(self)

endMoveRows(self)

endRemoveColumns(self)

endRemoveRows(self)

endResetModel(self)

filterAcceptsColumn(self, int, QModelIndex) → bool

filterAcceptsRow(self, sourceRow: int, sourceParent: QModelIndex) → bool

Parameters

• sourceRow (int) –

• sourceParent (QModelIndex) –

Return type

bool

flags(self, idx: QModelIndex) → Qt.ItemFlags

Parameters

idx (QModelIndex) –

Return type

Qt.ItemFlags

index(self, row: int, column: int, parent: QModelIndex = QModelIndex()) → QModelIndex

Parameters

• row (int) –

• column (int) –

• parent (QModelIndex = QModelIndex()) –

Return type

QModelIndex

invalidateFilter(self)

isLayerChecked(self, layer: QgsMapLayer) → bool

Returns if the layer is checked or not

Parameters

layer (QgsMapLayer) –

Return type

bool

isSignalConnected(self, QMetaMethod) → bool

layerTreeModel(self) → QgsLayerTreeModel

Rerturns the layer tree model

Return type

QgsLayerTreeModel

QgsLayerTreeFilterProxyModel.lessThan(self, QModelIndex, QModelIndex) -> bool

mapLayer(self, idx: QModelIndex) → QgsMapLayer

Returns the map layer at a given index

Parameters

idx (QModelIndex) –

Return type

QgsMapLayer

parent(self, child: QModelIndex) → QModelIndex

Parameters

child (QModelIndex) –

Return type

QModelIndex

persistentIndexList(self) → List[QModelIndex]

receivers(self, PYQT_SIGNAL) → int

resetInternalData(self)

sender(self) → QObject

senderSignalIndex(self) → int

setCheckedLayers(self, layers: Iterable[QgsMapLayer])

Initialize the list of checked layers.

Note

If the model is re-implemented, this method might become useless

Parameters

layers (Iterable[QgsMapLayer]) –

setData(self, index: QModelIndex, value: Any, role: int) → bool

Parameters

• index (QModelIndex) –

• value (Any) –

• role (int) –

Return type

bool

setFilterText(self, filterText: str = '')

Sets the filter text to search for a layer in the tree

Parameters

filterText (str = '') –

setFilters(self, filters: Union[QgsMapLayerProxyModel.Filters, QgsMapLayerProxyModel.Filter])

Defines the type layers (vector, raster, etc) shown in the tree If the list is empty, all types are shown.

Parameters

filters (Union[QgsMapLayerProxyModel.Filters) –

setLayerChecked(self, layer: QgsMapLayer, checked: bool)

This will set if the layer is checked or not

Parameters

• layer (QgsMapLayer) –

• checked (bool) –

setLayerTreeModel(self, layerTreeModel: QgsLayerTreeModel)

Sets the layer tree model

Parameters

layerTreeModel (QgsLayerTreeModel) –

sibling(self, row: int, column: int, idx: QModelIndex) → QModelIndex

Parameters

• row (int) –

• column (int) –

• idx (QModelIndex) –

Return type

QModelIndex

timerEvent(self, QTimerEvent)