32 return mMapLayers.size();
37 return mMapLayers.value( layerId );
42 QList<QgsMapLayer *> myResultList;
45 if ( layer->
name() == layerName )
47 myResultList << layer;
55 QList<QgsMapLayer *> myResultList;
58 if ( !myLayer || !myLayer->
isValid() )
64 if ( !mMapLayers.contains( myLayer->
id() ) )
66 mMapLayers[myLayer->
id()] = myLayer;
67 myResultList << mMapLayers[myLayer->
id()];
70 myLayer->setParent(
this );
72 connect( myLayer, &QObject::destroyed,
this, &QgsMapLayerStore::onMapLayerDeleted );
76 if ( !myResultList.isEmpty() )
86 QList<QgsMapLayer *> addedLayers;
87 addedLayers =
addMapLayers( QList<QgsMapLayer *>() << layer, takeOwnership );
88 return addedLayers.isEmpty() ? nullptr : addedLayers[0];
93 QList<QgsMapLayer *>
layers;
94 Q_FOREACH (
const QString &myId, layerIds )
96 layers << mMapLayers.value( myId );
104 if ( layers.isEmpty() )
107 QStringList layerIds;
108 QList<QgsMapLayer *> layerList;
113 if ( layer && mMapLayers.contains( layer->
id() ) )
115 layerIds << layer->
id();
120 if ( layerIds.isEmpty() )
128 QString myId( lyr->
id() );
131 mMapLayers.remove( myId );
132 if ( lyr->parent() == this )
144 removeMapLayers( QList<QgsMapLayer *>() << mMapLayers.value( layerId ) );
158 if ( mMapLayers.contains( layer->
id() ) )
165 mMapLayers.remove( layer->
id() );
166 layer->setParent(
nullptr );
185 if ( !other || other ==
this )
188 Q_ASSERT_X( other->thread() == thread(),
"QgsMapLayerStore::transferLayersFromStore",
"Cannot transfer layers from store with different thread affinity" );
190 QMap<QString, QgsMapLayer *> otherLayers = other->
mapLayers();
191 QMap<QString, QgsMapLayer *>::const_iterator it = otherLayers.constBegin();
192 for ( ; it != otherLayers.constEnd(); ++it )
200 void QgsMapLayerStore::onMapLayerDeleted( QObject *obj )
202 QString
id = mMapLayers.key( static_cast<QgsMapLayer *>( obj ) );
206 QgsDebugMsg( QString(
"Map layer deleted without unregistering! %1" ).arg(
id ) );
207 mMapLayers.remove(
id );
Base class for all map layer types.
QVector< T > layers() const
Returns a list of registered map layers with a specified layer type.
void layerWasAdded(QgsMapLayer *layer)
Emitted when a layer was added to the store.
void removeMapLayer(const QString &id)
Remove a layer from the store by layer id.
void layersAdded(const QList< QgsMapLayer *> &layers)
Emitted when one or more layers were added to the store.
void layersWillBeRemoved(const QStringList &layerIds)
Emitted when one or more layers are about to be removed from the store.
QgsMapLayer * takeMapLayer(QgsMapLayer *layer)
Takes a layer from the store.
bool isValid() const
Return the status of the layer.
void layerWillBeRemoved(const QString &layerId)
Emitted when a layer is about to be removed from the store.
void allLayersRemoved()
Emitted when all layers are removed, before layersWillBeRemoved() and layerWillBeRemoved() signals ar...
void removeAllMapLayers()
Removes all registered layers.
QString id() const
Returns the layer's unique ID, which is used to access this layer from QgsProject.
~QgsMapLayerStore() override
void layerRemoved(const QString &layerId)
Emitted after a layer was removed from the store.
void layersRemoved(const QStringList &layerIds)
Emitted after one or more layers were removed from the store.
int count() const
Returns the number of layers contained in the store.
QMap< QString, QgsMapLayer * > mapLayers() const
Returns a map of all layers by layer ID.
QgsMapLayer * addMapLayer(QgsMapLayer *layer, bool takeOwnership=true)
Add a layer to the store.
void transferLayersFromStore(QgsMapLayerStore *other)
Transfers all the map layers contained within another map layer store and adds them to this store...
void removeMapLayers(const QStringList &layerIds)
Remove a set of layers from the store by layer ID.
A storage object for map layers, in which the layers are owned by the store and have their lifetime b...
QList< QgsMapLayer * > addMapLayers(const QList< QgsMapLayer *> &layers, bool takeOwnership=true)
Add a list of layers to the store.
QgsMapLayer * mapLayer(const QString &id) const
Retrieve a pointer to a layer by layer id.
QList< QgsMapLayer * > mapLayersByName(const QString &name) const
Retrieve a list of matching layers by layer name.
QgsMapLayerStore(QObject *parent=nullptr)
Constructor for QgsMapLayerStore.