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qgsprocessingregistry.cpp
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qgsprocessingregistry.cpp
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/***************************************************************************
qgsprocessingregistry.cpp
--------------------------
begin : December 2016
copyright : (C) 2016 by Nyall Dawson
email : nyall dot dawson at gmail dot com
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgsprocessingregistry.h"
#include "qgsvectorfilewriter.h"
#include "qgsprocessingparametertypeimpl.h"
QgsProcessingRegistry::QgsProcessingRegistry( QObject *parent SIP_TRANSFERTHIS )
: QObject( parent )
{
addParameterType( new QgsProcessingParameterTypeRasterLayer() );
addParameterType( new QgsProcessingParameterTypeVectorLayer() );
addParameterType( new QgsProcessingParameterTypeMeshLayer() );
addParameterType( new QgsProcessingParameterTypeMapLayer() );
addParameterType( new QgsProcessingParameterTypeBoolean() );
addParameterType( new QgsProcessingParameterTypeExpression() );
addParameterType( new QgsProcessingParameterTypeCrs() );
addParameterType( new QgsProcessingParameterTypeRange() );
addParameterType( new QgsProcessingParameterTypePoint() );
addParameterType( new QgsProcessingParameterTypeEnum() );
addParameterType( new QgsProcessingParameterTypeExtent() );
addParameterType( new QgsProcessingParameterTypeMatrix() );
addParameterType( new QgsProcessingParameterTypeFile() ) ;
addParameterType( new QgsProcessingParameterTypeField() );
addParameterType( new QgsProcessingParameterTypeVectorDestination() );
addParameterType( new QgsProcessingParameterTypeRasterDestination() );
addParameterType( new QgsProcessingParameterTypeFileDestination() );
addParameterType( new QgsProcessingParameterTypeFolderDestination() );
addParameterType( new QgsProcessingParameterTypeString() );
addParameterType( new QgsProcessingParameterTypeAuthConfig() );
addParameterType( new QgsProcessingParameterTypeMultipleLayers() );
addParameterType( new QgsProcessingParameterTypeFeatureSource() );
addParameterType( new QgsProcessingParameterTypeNumber() );
addParameterType( new QgsProcessingParameterTypeDistance() );
addParameterType( new QgsProcessingParameterTypeScale() );
addParameterType( new QgsProcessingParameterTypeBand() );
addParameterType( new QgsProcessingParameterTypeFeatureSink() );
addParameterType( new QgsProcessingParameterTypeLayout() );
addParameterType( new QgsProcessingParameterTypeLayoutItem() );
addParameterType( new QgsProcessingParameterTypeColor() );
#if PROJ_VERSION_MAJOR>=6
addParameterType( new QgsProcessingParameterTypeCoordinateOperation() );
#endif
addParameterType( new QgsProcessingParameterTypeMapTheme() );
}
QgsProcessingRegistry::~QgsProcessingRegistry()
{
const auto constMProviders = mProviders;
for ( QgsProcessingProvider *p : constMProviders )
{
removeProvider( p );
}
const auto parameterTypes = mParameterTypes.values();
for ( QgsProcessingParameterType *type : parameterTypes )
{
removeParameterType( type );
}
}
bool QgsProcessingRegistry::addProvider( QgsProcessingProvider *provider )
{
if ( !provider )
return false;
if ( mProviders.contains( provider->id() ) )
{
QgsLogger::warning( QStringLiteral( "Duplicate provider %1 registered" ).arg( provider->id() ) );
delete provider;
return false;
}
if ( !provider->load() )
{
QgsLogger::warning( QStringLiteral( "Provider %1 cannot load" ).arg( provider->id() ) );
delete provider;
return false;
}
provider->setParent( this );
mProviders[ provider->id()] = provider;
emit providerAdded( provider->id() );
return true;
}
bool QgsProcessingRegistry::removeProvider( QgsProcessingProvider *provider )
{
if ( !provider )
return false;
QString id = provider->id();
if ( !mProviders.contains( id ) )
return false;
provider->unload();
delete mProviders.take( id );
emit providerRemoved( id );
return true;
}
bool QgsProcessingRegistry::removeProvider( const QString &providerId )
{
QgsProcessingProvider *p = providerById( providerId );
return removeProvider( p );
}
QgsProcessingProvider *QgsProcessingRegistry::providerById( const QString &id )
{
return mProviders.value( id, nullptr );
}
QList< const QgsProcessingAlgorithm * > QgsProcessingRegistry::algorithms() const
{
QList< const QgsProcessingAlgorithm * > algs;
QMap<QString, QgsProcessingProvider *>::const_iterator it = mProviders.constBegin();
for ( ; it != mProviders.constEnd(); ++it )
{
algs.append( it.value()->algorithms() );
}
return algs;
}
const QgsProcessingAlgorithm *QgsProcessingRegistry::algorithmById( const QString &constId ) const
{
// allow mapping of algorithm via registered algorithm aliases
QString id = mAlgorithmAliases.value( constId, constId );
QMap<QString, QgsProcessingProvider *>::const_iterator it = mProviders.constBegin();
for ( ; it != mProviders.constEnd(); ++it )
{
const auto constAlgorithms = it.value()->algorithms();
for ( const QgsProcessingAlgorithm *alg : constAlgorithms )
if ( alg->id() == id )
return alg;
}
// try mapping 'qgis' algs to 'native' algs - this allows us to freely move algorithms
// from the python 'qgis' provider to the c++ 'native' provider without breaking API
// or existing models
if ( id.startsWith( QLatin1String( "qgis:" ) ) )
{
QString newId = QStringLiteral( "native:" ) + id.mid( 5 );
return algorithmById( newId );
}
return nullptr;
}
QgsProcessingAlgorithm *QgsProcessingRegistry::createAlgorithmById( const QString &id, const QVariantMap &configuration ) const
{
const QgsProcessingAlgorithm *alg = algorithmById( id );
if ( !alg )
return nullptr;
std::unique_ptr< QgsProcessingAlgorithm > creation( alg->create( configuration ) );
return creation.release();
}
void QgsProcessingRegistry::addAlgorithmAlias( const QString &aliasId, const QString &actualId )
{
mAlgorithmAliases.insert( aliasId, actualId );
}
bool QgsProcessingRegistry::addParameterType( QgsProcessingParameterType *type )
{
if ( !mParameterTypes.contains( type->id() ) )
{
mParameterTypes.insert( type->id(), type );
emit parameterTypeAdded( type );
return true;
}
else
{
QgsLogger::warning( QStringLiteral( "Duplicate parameter type %1 (\"%2\") registered" ).arg( type->id(), type->name() ) );
if ( mParameterTypes.value( type->id() ) != type )
delete type;
return false;
}
}
void QgsProcessingRegistry::removeParameterType( QgsProcessingParameterType *type )
{
mParameterTypes.remove( type->id() );
emit parameterTypeRemoved( type );
delete type;
}
QgsProcessingParameterType *QgsProcessingRegistry::parameterType( const QString &id ) const
{
return mParameterTypes.value( id );
}
QList<QgsProcessingParameterType *> QgsProcessingRegistry::parameterTypes() const
{
return mParameterTypes.values();
}