37 return mMapLayers.size();
45 const QList<QgsMapLayer *> cLayers = mMapLayers.values();
46 for (
const auto l : cLayers )
59 return mMapLayers.value( layerId );
66 QList<QgsMapLayer *> myResultList;
67 const auto constMMapLayers = mMapLayers;
70 if ( layer->name() == layerName )
72 myResultList << layer;
82 QList<QgsMapLayer *> myResultList;
83 const auto constLayers =
layers;
95 if ( mMapLayers.contains( myLayer->id() ) && ! mMapLayers[myLayer->id()]->isValid() && myLayer->isValid() && myLayer->dataProvider() )
97 mMapLayers[myLayer->id()]->setDataSource( myLayer->dataProvider()->dataSourceUri(), myLayer->name(), myLayer->providerType(),
QgsDataProvider::ProviderOptions() );
100 if ( !mMapLayers.contains( myLayer->id() ) )
102 mMapLayers[myLayer->id()] = myLayer;
103 myResultList << mMapLayers[myLayer->id()];
106 myLayer->setParent(
this );
108 connect( myLayer, &QObject::destroyed,
this, &QgsMapLayerStore::onMapLayerDeleted );
112 if ( !myResultList.isEmpty() )
124 QList<QgsMapLayer *> addedLayers;
125 addedLayers =
addMapLayers( QList<QgsMapLayer *>() << layer, takeOwnership );
126 return addedLayers.isEmpty() ? nullptr : addedLayers[0];
133 QList<QgsMapLayer *>
layers;
134 const auto constLayerIds = layerIds;
135 for (
const QString &myId : constLayerIds )
137 layers << mMapLayers.value( myId );
150 QStringList layerIds;
151 QList<QgsMapLayer *> layerList;
153 const auto constLayers =
layers;
157 if ( layer && mMapLayers.contains( layer->id() ) )
159 layerIds << layer->id();
164 if ( layerIds.isEmpty() )
170 const auto constLayerList = layerList;
173 const QString myId( lyr->id() );
176 mMapLayers.remove( myId );
177 if ( lyr->parent() ==
this )
191 removeMapLayers( QList<QgsMapLayer *>() << mMapLayers.value( layerId ) );
209 if ( mMapLayers.contains( layer->
id() ) )
216 mMapLayers.remove( layer->
id() );
217 layer->setParent(
nullptr );
240 if ( !other || other ==
this )
243 Q_ASSERT_X( other->thread() == thread(),
"QgsMapLayerStore::transferLayersFromStore",
"Cannot transfer layers from store with different thread affinity" );
245 const QMap<QString, QgsMapLayer *> otherLayers = other->
mapLayers();
246 QMap<QString, QgsMapLayer *>::const_iterator it = otherLayers.constBegin();
247 for ( ; it != otherLayers.constEnd(); ++it )
255void QgsMapLayerStore::onMapLayerDeleted( QObject *obj )
259 const QString
id = mMapLayers.key(
static_cast<QgsMapLayer *
>( obj ) );
263 QgsDebugError( QStringLiteral(
"Map layer deleted without unregistering! %1" ).arg(
id ) );
264 mMapLayers.remove(
id );
281 QMap<QString, QgsMapLayer *> validLayers;
282 for (
auto it = mMapLayers.constBegin(); it != mMapLayers.constEnd(); it++ )
284 if ( it.value()->isValid() )
285 validLayers[it.key()] = it.value();
A storage object for map layers, in which the layers are owned by the store and have their lifetime b...
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.
void removeAllMapLayers()
Removes all registered layers.
~QgsMapLayerStore() override
QgsMapLayerStore(QObject *parent=nullptr)
Constructor for QgsMapLayerStore.
void layersWillBeRemoved(const QStringList &layerIds)
Emitted when one or more layers are about to be removed from the store.
int validCount() const
Returns the number of valid layers contained in the store.
void removeMapLayer(const QString &id)
Remove a layer from the store by layer id.
void layerWillBeRemoved(const QString &layerId)
Emitted when a layer is about to be removed from the store.
QVector< T > layers() const
Returns a list of registered map layers with a specified layer type.
void layersRemoved(const QStringList &layerIds)
Emitted after one or more layers were removed from the store.
void allLayersRemoved()
Emitted when all layers are removed, before layersWillBeRemoved() and layerWillBeRemoved() signals ar...
void layerRemoved(const QString &layerId)
Emitted after a layer was removed from the store.
QgsMapLayer * takeMapLayer(QgsMapLayer *layer)
Takes a layer from the store.
void layerWasAdded(QgsMapLayer *layer)
Emitted when a layer was added to the store.
QList< QgsMapLayer * > mapLayersByName(const QString &name) const
Retrieve a list of matching layers by layer name.
void removeMapLayers(const QStringList &layerIds)
Remove a set of layers from the store by layer ID.
QMap< QString, QgsMapLayer * > validMapLayers() const
Returns a map of all valid layers by layer ID.
QgsMapLayer * mapLayer(const QString &id) const
Retrieve a pointer to a layer 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 layersAdded(const QList< QgsMapLayer * > &layers)
Emitted when one or more layers were added to the store.
QList< QgsMapLayer * > addMapLayers(const QList< QgsMapLayer * > &layers, bool takeOwnership=true)
Add a list of layers to the store.
Base class for all map layer types.
#define QgsDebugError(str)
#define QGIS_CHECK_QOBJECT_THREAD_EQUALITY(other)
#define QGIS_PROTECT_QOBJECT_THREAD_ACCESS_NON_FATAL
#define QGIS_PROTECT_QOBJECT_THREAD_ACCESS
Setting options for creating vector data providers.