24 : QSortFilterProxyModel( parent )
37 mCheckedLayers = layers;
49 if ( idx.column() == 0 )
51 return Qt::ItemIsEnabled | Qt::ItemIsUserCheckable;
53 return Qt::NoItemFlags;
58 QModelIndex newIndex = QSortFilterProxyModel::index( row, 0,
parent );
62 return createIndex( row, column, newIndex.internalId() );
67 return QSortFilterProxyModel::parent( createIndex( child.row(), 0, child.internalId() ) );
72 const QModelIndex
parent = idx.parent();
79 if ( idx.column() == 0 )
81 node = mLayerTreeModel->
index2node( mapToSource( idx ) );
92 if ( filterText == mFilterText )
95 mFilterText = filterText;
101 return mLayerTreeModel;
112 return mShowPrivateLayers;
117 if ( showPrivate == mShowPrivateLayers )
120 mShowPrivateLayers = showPrivate;
138 return mCheckedLayers.contains( layer );
145 mCheckedLayers << layer;
149 mCheckedLayers.removeAll( layer );
153void QgsLayerTreeFilterProxyModel::setLayerCheckedPrivate(
QgsMapLayer *layer,
bool checked )
161 const QModelIndex
index = mapFromSource( mLayerTreeModel->
node2index( node ) );
168bool QgsLayerTreeFilterProxyModel::layerShown(
QgsMapLayer *layer )
const
180 const auto constChildren = node->
children();
195 if ( !mFilterText.isEmpty() && !layer->
name().contains( mFilterText, Qt::CaseInsensitive ) )
204 return layerShown( layer );
210 if ( idx.column() == 0 )
212 if ( role == Qt::CheckStateRole )
223 return Qt::Unchecked;
229 bool hasChecked =
false, hasUnchecked =
false;
231 for ( n = 0; !hasChecked || !hasUnchecked; n++ )
233 const QVariant v =
data(
index( n, 0, idx ), role );
239 case Qt::PartiallyChecked:
241 return Qt::PartiallyChecked;
255 return Qt::Unchecked;
258 if ( hasChecked && hasUnchecked )
259 return Qt::PartiallyChecked;
264 Q_ASSERT( hasUnchecked );
265 return Qt::Unchecked;
270 return mLayerTreeModel->
data( mapToSource( idx ), role );
278 if (
index.column() == 0 )
280 if ( role == Qt::CheckStateRole )
286 if ( !child.isValid() )
299 if ( value.toInt() == Qt::Checked )
300 setLayerCheckedPrivate( layer,
true );
301 else if ( value.toInt() == Qt::Unchecked )
302 setLayerCheckedPrivate( layer,
false );
310 return mLayerTreeModel->
setData( mapToSource(
index ), value, role );
QFlags< LayerFilter > LayerFilters
QModelIndex index(int row, int column, const QModelIndex &parent=QModelIndex()) const override
bool nodeShown(QgsLayerTreeNode *node) const
Returns true if the specified node will be shown in the model.
virtual void setLayerChecked(QgsMapLayer *layer, bool checked)
This will set if the layer is checked or not.
bool filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const override
virtual bool setData(const QModelIndex &index, const QVariant &value, int role) override
void setFilters(Qgis::LayerFilters filters)
Defines the type layers (vector, raster, etc) shown in the tree If the list is empty,...
virtual int columnCount(const QModelIndex &parent) const override
QgsMapLayer * mapLayer(const QModelIndex &idx) const
Returns the map layer at a given index.
void setLayerTreeModel(QgsLayerTreeModel *layerTreeModel)
Sets the layer tree model.
virtual bool isLayerChecked(QgsMapLayer *layer) const
Returns if the layer is checked or not.
virtual void setFilterText(const QString &filterText=QString())
Sets the filter text to search for a layer in the tree.
void setCheckedLayers(const QList< QgsMapLayer * > layers)
Initialize the list of checked layers.
void setShowPrivateLayers(bool showPrivate)
Determines if private layers are shown.
QModelIndex sibling(int row, int column, const QModelIndex &idx) const override
QModelIndex parent(const QModelIndex &child) const override
virtual QVariant data(const QModelIndex &index, int role) const override
QgsLayerTreeFilterProxyModel(QObject *parent=nullptr)
Constructor.
virtual Qt::ItemFlags flags(const QModelIndex &idx) const override
bool showPrivateLayers() const
Returns if private layers are shown.
QgsLayerTreeModel * layerTreeModel() const
Rerturns the layer tree model.
QgsLayerTreeLayer * findLayer(QgsMapLayer *layer) const
Find layer node representing the map layer.
QgsMapLayer * layer() const
Returns the map layer associated with this node.
The QgsLayerTreeModel class is model implementation for Qt item views framework.
QModelIndex node2index(QgsLayerTreeNode *node) const
Returns index for a given node. If the node does not belong to the layer tree, the result is undefine...
bool setData(const QModelIndex &index, const QVariant &value, int role=Qt::EditRole) override
QVariant data(const QModelIndex &index, int role=Qt::DisplayRole) const override
QgsLayerTree * rootGroup() const
Returns pointer to the root node of the layer tree. Always a non nullptr value.
QgsLayerTreeNode * index2node(const QModelIndex &index) const
Returns layer tree node for given index.
QModelIndex index(int row, int column, const QModelIndex &parent=QModelIndex()) const override
This class is a base class for nodes in a layer tree.
@ NodeGroup
Container of other groups and layers.
QList< QgsLayerTreeNode * > children()
Gets list of children of the node. Children are owned by the parent.
NodeType nodeType() const
Find out about type of the node. It is usually shorter to use convenience functions from QgsLayerTree...
static QgsLayerTreeLayer * toLayer(QgsLayerTreeNode *node)
Cast node to a layer.
static bool isLayer(const QgsLayerTreeNode *node)
Check whether the node is a valid layer node.
static bool layerMatchesFilters(const QgsMapLayer *layer, const Qgis::LayerFilters &filters)
Returns if the layer matches the given filters.
Base class for all map layer types.
QgsMapLayer::LayerFlags flags() const
Returns the flags for this layer.
@ Private
Determines if the layer is meant to be exposed to the GUI, i.e. visible in the layer legend tree.
static QgsProject * instance()
Returns the QgsProject singleton instance.
void readProject(const QDomDocument &document)
Emitted when a project is being read.