//introduced in 1.8
QList<QgsMapLayer *> QgsMapLayerRegistry::addMapLayers(
QList<QgsMapLayer *> theMapLayers,
bool addToLegend,
bool takeOwnership )
{
QList<QgsMapLayer *> myResultList;
for ( int i = 0; i < theMapLayers.size(); ++i )
{
QgsMapLayer * myLayer = theMapLayers.at( i );
if ( !myLayer || !myLayer->isValid() )
{
QgsDebugMsg( "cannot add invalid layers" );
continue;
}
//check the layer is not already registered!
if ( !mMapLayers.contains( myLayer->id() ) )
{
mMapLayers[myLayer->id()] = myLayer;
myResultList << mMapLayers[myLayer->id()];
if ( takeOwnership )
mOwnedLayers << myLayer;
emit layerWasAdded( myLayer );
}
}
if ( myResultList.count() > 0 )
{
emit layersAdded( myResultList );
if ( addToLegend )
emit legendLayersAdded( myResultList );
}
return myResultList;
} // QgsMapLayerRegistry::addMapLayers
//introduced in 1.8
QList<QgsMapLayer *> QgsMapLayerRegistry::addMapLayers(
QList<QgsMapLayer *> theMapLayers,
bool addToLegend )
{
QList<QgsMapLayer *> myResultList;
for ( int i = 0; i < theMapLayers.size(); ++i )
{
QgsMapLayer * myLayer = theMapLayers.at( i );
if ( !myLayer || !myLayer->isValid() )
{
QgsDebugMsg( "cannot add invalid layers" );
continue;
}
//check the layer is not already registered!
QMap<QString, QgsMapLayer*>::iterator myIterator =
mMapLayers.find( myLayer->id() );
//if myIterator returns mMapLayers.end() then it
//does not exist in registry and its safe to add it
if ( myIterator == mMapLayers.end() )
{
mMapLayers[myLayer->id()] = myLayer;
myResultList << mMapLayers[myLayer->id()];
emit layerWasAdded( myLayer );
}
}
if ( myResultList.count() > 0 )
{
emit layersAdded( myResultList );
if ( addToLegend )
emit legendLayersAdded( myResultList );
}
return myResultList;
} // QgsMapLayerRegistry::addMapLayers
QgsLayerTreeRegistryBridge::QgsLayerTreeRegistryBridge( QgsLayerTreeGroup *root, QObject *parent )
: QObject( parent )
, mRoot( root )
, mRegistryRemovingLayers( false )
, mEnabled( true )
, mNewLayersVisible( true )
, mInsertionPointGroup( root )
, mInsertionPointIndex( 0 )
{
connect( QgsMapLayerRegistry::instance(), SIGNAL( legendLayersAdded( QList<QgsMapLayer*> ) ), this, SLOT( layersAdded( QList<QgsMapLayer*> ) ) );
connect( QgsMapLayerRegistry::instance(), SIGNAL( layersWillBeRemoved( QStringList ) ), this, SLOT( layersWillBeRemoved( QStringList ) ) );
connect( mRoot, SIGNAL( willRemoveChildren( QgsLayerTreeNode*, int, int ) ), this, SLOT( groupWillRemoveChildren( QgsLayerTreeNode*, int, int ) ) );
connect( mRoot, SIGNAL( removedChildren( QgsLayerTreeNode*, int, int ) ), this, SLOT( groupRemovedChildren() ) );
}