qgsproject.h

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/***************************************************************************
                                  qgsproject.h
 
                      Implements persistent project state.
 
                              -------------------
  begin                : July 23, 2004
  copyright            : (C) 2004 by Mark Coletti
  email                : mcoletti at gmail.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.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSPROJECT_H
#define QGSPROJECT_H
 
#include "qgis_core.h"
#include "qgis_sip.h"
#include <memory>
#include <QHash>
#include <QList>
#include <QObject>
#include <QPair>
#include <QFileInfo>
#include <QStringList>
#include <QTranslator>
 
#include "qgsunittypes.h"
#include "qgssnappingconfig.h"
#include "qgsprojectversion.h"
#include "qgsexpressioncontextgenerator.h"
#include "qgsexpressioncontextscopegenerator.h"
#include "qgscoordinatereferencesystem.h"
#include "qgscoordinatetransformcontext.h"
#include "qgsprojectproperty.h"
#include "qgsmaplayerstore.h"
#include "qgsarchive.h"
#include "qgsreadwritecontext.h"
#include "qgsprojectmetadata.h"
#include "qgstranslationcontext.h"
#include "qgsprojecttranslator.h"
#include "qgscolorscheme.h"
#include "qgssettings.h"
#include "qgspropertycollection.h"
 
#include "qgsrelationmanager.h"
#include "qgsmapthemecollection.h"
 
class QFileInfo;
class QDomDocument;
class QDomElement;
class QDomNode;
 
class QgsLayerTreeGroup;
class QgsLayerTreeRegistryBridge;
class QgsMapLayer;
class QgsPathResolver;
class QgsProjectBadLayerHandler;
class QgsProjectStorage;
class QgsTolerance;
class QgsTransactionGroup;
class QgsVectorLayer;
class QgsAnnotationManager;
class QgsLayoutManager;
class QgsLayerTree;
class QgsLabelingEngineSettings;
class QgsAuxiliaryStorage;
class QgsMapLayer;
class QgsBookmarkManager;
class QgsProjectViewSettings;
class QgsProjectDisplaySettings;
class QgsProjectTimeSettings;
class QgsAnnotationLayer;
class QgsAttributeEditorContainer;
class QgsPropertyCollection;
 
 
class CORE_EXPORT QgsProject : public QObject, public QgsExpressionContextGenerator, public QgsExpressionContextScopeGenerator, public QgsProjectTranslator
{
    Q_OBJECT
    Q_PROPERTY( QStringList nonIdentifiableLayers READ nonIdentifiableLayers WRITE setNonIdentifiableLayers NOTIFY nonIdentifiableLayersChanged )
    Q_PROPERTY( QString fileName READ fileName WRITE setFileName NOTIFY fileNameChanged )
    Q_PROPERTY( QString homePath READ homePath WRITE setPresetHomePath NOTIFY homePathChanged )
    Q_PROPERTY( QgsCoordinateReferenceSystem crs READ crs WRITE setCrs NOTIFY crsChanged )
    Q_PROPERTY( QgsCoordinateTransformContext transformContext READ transformContext WRITE setTransformContext NOTIFY transformContextChanged )
    Q_PROPERTY( QString ellipsoid READ ellipsoid WRITE setEllipsoid NOTIFY ellipsoidChanged )
    Q_PROPERTY( QgsMapThemeCollection *mapThemeCollection READ mapThemeCollection NOTIFY mapThemeCollectionChanged )
    Q_PROPERTY( QgsSnappingConfig snappingConfig READ snappingConfig WRITE setSnappingConfig NOTIFY snappingConfigChanged )
    Q_PROPERTY( QgsRelationManager *relationManager READ relationManager )
    Q_PROPERTY( AvoidIntersectionsMode avoidIntersectionsMode READ avoidIntersectionsMode WRITE setAvoidIntersectionsMode NOTIFY avoidIntersectionsModeChanged )
    Q_PROPERTY( QList<QgsVectorLayer *> avoidIntersectionsLayers READ avoidIntersectionsLayers WRITE setAvoidIntersectionsLayers NOTIFY avoidIntersectionsLayersChanged )
    Q_PROPERTY( QgsProjectMetadata metadata READ metadata WRITE setMetadata NOTIFY metadataChanged )
    Q_PROPERTY( QColor backgroundColor READ backgroundColor WRITE setBackgroundColor NOTIFY backgroundColorChanged )
    Q_PROPERTY( QColor selectionColor READ selectionColor WRITE setSelectionColor NOTIFY selectionColorChanged )
    Q_PROPERTY( bool topologicalEditing READ topologicalEditing WRITE setTopologicalEditing NOTIFY topologicalEditingChanged )
 
  public:
 
    enum class ReadFlag SIP_MONKEYPATCH_SCOPEENUM
    {
      FlagDontResolveLayers = 1 << 0, 
      FlagDontLoadLayouts = 1 << 1, 
      FlagTrustLayerMetadata = 1 << 2, 
      FlagDontStoreOriginalStyles = 1 << 3, 
    };
    Q_DECLARE_FLAGS( ReadFlags, ReadFlag )
 
    
    enum class FileFormat
    {
      Qgz, 
      Qgs, 
    };
    Q_ENUM( FileFormat )
 
    
    enum class AvoidIntersectionsMode
    {
      AllowIntersections, 
      AvoidIntersectionsCurrentLayer, 
      AvoidIntersectionsLayers, 
    };
    Q_ENUM( AvoidIntersectionsMode )
 
    
    enum DataDefinedServerProperty
    {
      NoProperty = 0, 
      AllProperties = 1, 
      WMSOnlineResource = 2, 
    };
 
    static QgsProject *instance();
 
    static void setInstance( QgsProject *project ) ;
 
 
    explicit QgsProject( QObject *parent SIP_TRANSFERTHIS = nullptr );
 
    ~QgsProject() override;
 
    void setTitle( const QString &title );
 
    QString title() const;
 
    QString saveUser() const;
 
    QString saveUserFullName() const;
 
    QDateTime lastSaveDateTime() const;
 
    QgsProjectVersion lastSaveVersion() const;
 
    bool isDirty() const;
 
    void setFileName( const QString &name );
 
    QString fileName() const;
 
    void setOriginalPath( const QString &path );
 
    QString originalPath() const;
 
    Q_DECL_DEPRECATED QFileInfo fileInfo() const SIP_DEPRECATED;
 
    QgsProjectStorage *projectStorage() const;
 
    QDateTime lastModified() const;
 
    QString absoluteFilePath() const;
 
    QString absolutePath() const;
 
    QString baseName() const;
 
    QgsCoordinateReferenceSystem crs() const;
 
    void setCrs( const QgsCoordinateReferenceSystem &crs, bool adjustEllipsoid = false );
 
    QString ellipsoid() const;
 
    void setEllipsoid( const QString &ellipsoid );
 
 
    QgsCoordinateTransformContext transformContext() const;
 
    void setTransformContext( const QgsCoordinateTransformContext &context );
 
    void clear();
 
    bool read( const QString &filename, QgsProject::ReadFlags flags = QgsProject::ReadFlags() );
 
    bool read( QgsProject::ReadFlags flags = QgsProject::ReadFlags() );
 
    bool readLayer( const QDomNode &layerNode );
 
    bool write( const QString &filename );
 
    bool write();
 
    bool writeEntry( const QString &scope, const QString &key, bool value ) SIP_PYNAME( writeEntryBool );
 
    bool writeEntry( const QString &scope, const QString &key, double value ) SIP_PYNAME( writeEntryDouble );
 
    bool writeEntry( const QString &scope, const QString &key, int value );
 
    bool writeEntry( const QString &scope, const QString &key, const QString &value );
 
    bool writeEntry( const QString &scope, const QString &key, const QStringList &value );
 
    QStringList readListEntry( const QString &scope, const QString &key, const QStringList &def = QStringList(), bool *ok SIP_OUT = nullptr ) const;
 
    QString readEntry( const QString &scope, const QString &key, const QString &def = QString(), bool *ok SIP_OUT = nullptr ) const;
 
    int readNumEntry( const QString &scope, const QString &key, int def = 0, bool *ok SIP_OUT = nullptr ) const;
 
    double readDoubleEntry( const QString &scope, const QString &key, double def = 0, bool *ok SIP_OUT = nullptr ) const;
 
    bool readBoolEntry( const QString &scope, const QString &key, bool def = false, bool *ok SIP_OUT = nullptr ) const;
 
    bool removeEntry( const QString &scope, const QString &key );
 
    QStringList entryList( const QString &scope, const QString &key ) const;
 
    QStringList subkeyList( const QString &scope, const QString &key ) const;
 
    // TODO Now slightly broken since re-factoring.  Won't print out top-level key
    //           and redundantly prints sub-keys.
 
    void dumpProperties() const;
 
    QgsPathResolver pathResolver() const;
 
    QString writePath( const QString &filename ) const;
 
    QString readPath( const QString &filename ) const;
 
    QString error() const;
 
    void setBadLayerHandler( QgsProjectBadLayerHandler *handler SIP_TRANSFER );
 
    QString layerIsEmbedded( const QString &id ) const;
 
    bool createEmbeddedLayer( const QString &layerId, const QString &projectFilePath, QList<QDomNode> &brokenNodes,
                              bool saveFlag = true, QgsProject::ReadFlags flags = QgsProject::ReadFlags() ) SIP_SKIP;
 
    QgsLayerTreeGroup *createEmbeddedGroup( const QString &groupName, const QString &projectFilePath, const QStringList &invisibleLayers, QgsProject::ReadFlags flags = QgsProject::ReadFlags() );
 
    void setTopologicalEditing( bool enabled );
 
    bool topologicalEditing() const;
 
    QgsUnitTypes::DistanceUnit distanceUnits() const;
 
    void setDistanceUnits( QgsUnitTypes::DistanceUnit unit );
 
    QgsUnitTypes::AreaUnit areaUnits() const;
 
    void setAreaUnits( QgsUnitTypes::AreaUnit unit );
 
    QString homePath() const;
 
    QString presetHomePath() const;
 
    QgsRelationManager *relationManager() const;
 
    const QgsLayoutManager *layoutManager() const SIP_SKIP;
 
    QgsLayoutManager *layoutManager();
 
    const QgsBookmarkManager *bookmarkManager() const SIP_SKIP;
 
    QgsBookmarkManager *bookmarkManager();
 
    const QgsProjectViewSettings *viewSettings() const SIP_SKIP;
 
    QgsProjectViewSettings *viewSettings();
 
    const QgsProjectTimeSettings *timeSettings() const SIP_SKIP;
 
    QgsProjectTimeSettings *timeSettings();
 
    const QgsProjectDisplaySettings *displaySettings() const SIP_SKIP;
 
    QgsProjectDisplaySettings *displaySettings();
 
    QgsLayerTree *layerTreeRoot() const;
 
    QgsLayerTreeRegistryBridge *layerTreeRegistryBridge() const { return mLayerTreeRegistryBridge; }
 
    QgsMapThemeCollection *mapThemeCollection();
 
    QgsAnnotationManager *annotationManager();
 
    const QgsAnnotationManager *annotationManager() const SIP_SKIP;
 
    Q_DECL_DEPRECATED void setNonIdentifiableLayers( const QList<QgsMapLayer *> &layers );
 
    Q_DECL_DEPRECATED void setNonIdentifiableLayers( const QStringList &layerIds );
 
    Q_DECL_DEPRECATED QStringList nonIdentifiableLayers() const;
 
    bool autoTransaction() const;
 
    void setAutoTransaction( bool autoTransaction );
 
    QMap< QPair< QString, QString>, QgsTransactionGroup *> transactionGroups() SIP_SKIP;
 
    QgsTransactionGroup *transactionGroup( const QString &providerKey, const QString &connString );
 
    bool evaluateDefaultValues() const;
 
    void setEvaluateDefaultValues( bool evaluateDefaultValues );
 
    QgsExpressionContext createExpressionContext() const override;
    QgsExpressionContextScope *createExpressionContextScope() const override;
 
    QgsSnappingConfig snappingConfig() const;
 
    QList<QgsVectorLayer *> avoidIntersectionsLayers() const;
 
    void setAvoidIntersectionsLayers( const QList<QgsVectorLayer *> &layers );
 
    void setAvoidIntersectionsMode( const AvoidIntersectionsMode mode );
 
    AvoidIntersectionsMode avoidIntersectionsMode() const { return mAvoidIntersectionsMode; }
 
    QVariantMap customVariables() const;
 
    void setCustomVariables( const QVariantMap &customVariables );
 
    void setLabelingEngineSettings( const QgsLabelingEngineSettings &settings );
 
    const QgsLabelingEngineSettings &labelingEngineSettings() const;
 
    //
    // Functionality from QgsMapLayerRegistry
    //
 
    QgsMapLayerStore *layerStore();
 
    SIP_SKIP const QgsMapLayerStore *layerStore() const;
 
    int count() const;
 
    int validCount() const;
 
    Q_INVOKABLE QgsMapLayer *mapLayer( const QString &layerId ) const;
 
#ifndef SIP_RUN
 
    template <class T>
    T mapLayer( const QString &layerId ) const
    {
      return qobject_cast<T>( mapLayer( layerId ) );
    }
#endif
 
    QList<QgsMapLayer *> mapLayersByName( const QString &layerName ) const;
 
    QList<QgsMapLayer *> mapLayersByShortName( const QString &shortName ) const;
 
 
    QMap<QString, QgsMapLayer *> mapLayers( const bool validOnly = false ) const;
 
    bool isZipped() const;
 
#ifndef SIP_RUN
 
    template <typename T>
    QVector<T> layers() const
    {
      return mLayerStore->layers<T>();
    }
 
    template <typename T>
    QVector<T> mapLayersByShortName( const QString &shortName ) const
    {
      QVector<T> layers;
      const auto constMapLayers { mLayerStore->layers<T>() };
      for ( const auto l : constMapLayers )
      {
        if ( ! l->shortName().isEmpty() )
        {
          if ( l->shortName() == shortName )
            layers << l;
        }
        else if ( l->name() == shortName )
        {
          layers << l;
        }
      }
      return layers;
    }
 
#endif
 
    QList<QgsMapLayer *> addMapLayers( const QList<QgsMapLayer *> &mapLayers SIP_TRANSFER,
                                       bool addToLegend = true,
                                       bool takeOwnership SIP_PYARGREMOVE = true );
 
    QgsMapLayer *addMapLayer( QgsMapLayer *mapLayer SIP_TRANSFER,
                              bool addToLegend = true,
                              bool takeOwnership SIP_PYARGREMOVE = true );
 
    void removeMapLayers( const QStringList &layerIds );
 
    //TODO QGIS 4.0 - add PyName alias to avoid list type conversion error
 
    void removeMapLayers( const QList<QgsMapLayer *> &layers );
 
    void removeMapLayer( const QString &layerId );
 
    void removeMapLayer( QgsMapLayer *layer );
 
    QgsMapLayer *takeMapLayer( QgsMapLayer *layer ) SIP_TRANSFERBACK;
 
    QgsAnnotationLayer *mainAnnotationLayer();
 
    void removeAllMapLayers();
 
    void reloadAllLayers();
 
    QgsCoordinateReferenceSystem defaultCrsForNewLayers() const;
 
    void setTrustLayerMetadata( bool trust );
 
    bool trustLayerMetadata() const { return mTrustLayerMetadata; }
 
    const QgsAuxiliaryStorage *auxiliaryStorage() const SIP_SKIP;
 
    QgsAuxiliaryStorage *auxiliaryStorage();
 
    QString attachedFile( const QString &fileName ) const SIP_SKIP;
 
    QgsStringMap attachedFiles() const SIP_SKIP;
 
    const QgsProjectMetadata &metadata() const;
 
    void setMetadata( const QgsProjectMetadata &metadata );
 
    Q_DECL_DEPRECATED QSet<QgsMapLayer *> requiredLayers() const;
 
    Q_DECL_DEPRECATED void setRequiredLayers( const QSet<QgsMapLayer *> &layers );
 
    void setProjectColors( const QgsNamedColorList &colors );
 
    void setBackgroundColor( const QColor &color );
 
    QColor backgroundColor() const;
 
    void setSelectionColor( const QColor &color );
 
    QColor selectionColor() const;
 
    Q_DECL_DEPRECATED void setMapScales( const QVector<double> &scales ) SIP_DEPRECATED;
 
    Q_DECL_DEPRECATED QVector<double> mapScales() const SIP_DEPRECATED;
 
    Q_DECL_DEPRECATED void setUseProjectScales( bool enabled ) SIP_DEPRECATED;
 
    Q_DECL_DEPRECATED bool useProjectScales() const SIP_DEPRECATED;
 
    void generateTsFile( const QString &locale );
 
    QString translate( const QString &context, const QString &sourceText, const char *disambiguation = nullptr, int n = -1 ) const override;
 
    bool accept( QgsStyleEntityVisitorInterface *visitor ) const;
 
#ifdef SIP_RUN
    SIP_PYOBJECT __repr__();
    % MethodCode
    QString str = QStringLiteral( "<QgsProject: '%1'%2>" ).arg( sipCpp->fileName(),
                  sipCpp == QgsProject::instance() ? QStringLiteral( " (singleton instance)" ) : QString() );
    sipRes = PyUnicode_FromString( str.toUtf8().constData() );
    % End
#endif
 
  signals:
 
    void cleared();
 
    void readProject( const QDomDocument & );
 
    void readProjectWithContext( const QDomDocument &, QgsReadWriteContext &context );
 
    void writeProject( QDomDocument & );
 
    void readMapLayer( QgsMapLayer *mapLayer, const QDomElement &layerNode );
 
    void writeMapLayer( QgsMapLayer *mapLayer, QDomElement &layerElem, QDomDocument &doc );
 
    void projectSaved();
 
    void oldProjectVersionWarning( const QString & );
 
    void layerLoaded( int i, int n );
 
    void loadingLayer( const QString &layerName );
 
    void loadingLayerMessageReceived( const QString &layerName, const QList<QgsReadWriteContext::ReadWriteMessage> &messages );
 
    Q_DECL_DEPRECATED void nonIdentifiableLayersChanged( QStringList nonIdentifiableLayers );
 
    void fileNameChanged();
 
    void homePathChanged();
 
    void snappingConfigChanged( const QgsSnappingConfig &config );
 
    void avoidIntersectionsModeChanged();
 
    void customVariablesChanged();
 
    void crsChanged();
 
    void ellipsoidChanged( const QString &ellipsoid );
 
 
    void transformContextChanged();
 
    void missingDatumTransforms( const QStringList &missingTransforms );
 
    void transactionGroupsChanged();
 
    void topologicalEditingChanged();
 
    void avoidIntersectionsLayersChanged();
 
    void mapThemeCollectionChanged();
 
    void labelingEngineSettingsChanged();
 
    void metadataChanged();
 
    void projectColorsChanged();
 
    void backgroundColorChanged();
 
    void selectionColorChanged();
 
    //
    // signals from QgsMapLayerRegistry
    //
 
    void layersWillBeRemoved( const QStringList &layerIds );
 
    void layersWillBeRemoved( const QList<QgsMapLayer *> &layers );
 
    void layerWillBeRemoved( const QString &layerId );
 
    void layerWillBeRemoved( QgsMapLayer *layer );
 
    void layersRemoved( const QStringList &layerIds );
 
    void layerRemoved( const QString &layerId );
 
    //TODO QGIS 4.0 - rename to past tense
 
    void removeAll();
 
    void layersAdded( const QList<QgsMapLayer *> &layers );
 
    void layerWasAdded( QgsMapLayer *layer );
 
    void legendLayersAdded( const QList<QgsMapLayer *> &layers );
 
    void isDirtyChanged( bool dirty );
 
    void dirtySet();
 
    void collectAttachedFiles( QgsStringMap &files SIP_INOUT ) SIP_SKIP;
 
    Q_DECL_DEPRECATED void mapScalesChanged() SIP_DEPRECATED;
 
  public slots:
 
    void setSnappingConfig( const QgsSnappingConfig &snappingConfig );
 
    // TODO QGIS 4.0 - rename b to dirty
 
    void setDirty( bool b = true );
 
    void setPresetHomePath( const QString &path );
 
    void registerTranslatableContainers( QgsTranslationContext *translationContext, QgsAttributeEditorContainer *parent, const QString &layerId );
 
    void registerTranslatableObjects( QgsTranslationContext *translationContext );
 
    void setDataDefinedServerProperties( const QgsPropertyCollection &properties );
 
    QgsPropertyCollection dataDefinedServerProperties() const;
 
  private slots:
    void onMapLayersAdded( const QList<QgsMapLayer *> &layers );
    void onMapLayersRemoved( const QList<QgsMapLayer *> &layers );
    void cleanTransactionGroups( bool force = false );
 
  private:
 
    static QgsProject *sProject;
 
 
    bool _getMapLayers( const QDomDocument &doc, QList<QDomNode> &brokenNodes, QgsProject::ReadFlags flags = QgsProject::ReadFlags() );
 
    void setError( const QString &errorMessage ) SIP_SKIP;
 
    void clearError() SIP_SKIP;
 
    bool addLayer( const QDomElement &layerElem, QList<QDomNode> &brokenNodes, QgsReadWriteContext &context, QgsProject::ReadFlags flags = QgsProject::ReadFlags() ) SIP_SKIP;
 
    void initializeEmbeddedSubtree( const QString &projectFilePath, QgsLayerTreeGroup *group, QgsProject::ReadFlags flags = QgsProject::ReadFlags() ) SIP_SKIP;
 
    bool loadEmbeddedNodes( QgsLayerTreeGroup *group, QgsProject::ReadFlags flags = QgsProject::ReadFlags() ) SIP_SKIP;
 
    bool readProjectFile( const QString &filename, QgsProject::ReadFlags flags = QgsProject::ReadFlags() );
 
    bool writeProjectFile( const QString &filename );
 
    bool unzip( const QString &filename, QgsProject::ReadFlags flags = QgsProject::ReadFlags() );
 
    bool zip( const QString &filename );
 
    bool saveAuxiliaryStorage( const QString &filename = QString() );
 
    static QgsPropertiesDefinition &dataDefinedServerPropertyDefinitions();
 
    std::unique_ptr< QgsMapLayerStore > mLayerStore;
 
    QString mErrorMessage;
 
    QgsProjectBadLayerHandler *mBadLayerHandler = nullptr;
 
    QHash< QString, QPair< QString, bool> > mEmbeddedLayers;
 
    QgsSnappingConfig mSnappingConfig;
    AvoidIntersectionsMode mAvoidIntersectionsMode = AvoidIntersectionsMode::AllowIntersections;
 
    QgsRelationManager *mRelationManager = nullptr;
 
    std::unique_ptr<QgsAnnotationManager> mAnnotationManager;
    std::unique_ptr<QgsLayoutManager> mLayoutManager;
 
    QgsBookmarkManager *mBookmarkManager = nullptr;
 
    QgsProjectViewSettings *mViewSettings = nullptr;
 
    QgsProjectTimeSettings *mTimeSettings = nullptr;
 
    QgsProjectDisplaySettings *mDisplaySettings = nullptr;
 
    QgsLayerTree *mRootGroup = nullptr;
 
    QgsLayerTreeRegistryBridge *mLayerTreeRegistryBridge = nullptr;
 
    QgsAnnotationLayer *mMainAnnotationLayer = nullptr;
 
    QMap< QPair< QString, QString>, QgsTransactionGroup *> mTransactionGroups;
 
    std::unique_ptr<QgsMapThemeCollection> mMapThemeCollection;
 
    std::unique_ptr<QgsLabelingEngineSettings> mLabelingEngineSettings;
 
    QVariantMap mCustomVariables;
 
    std::unique_ptr<QgsProjectArchive> mArchive;
 
    std::unique_ptr<QgsAuxiliaryStorage> mAuxiliaryStorage;
 
    QFile mFile;                 // current physical project file
 
    QString mOriginalPath;
 
    QString mSaveUser;              // last saved user.
    QString mSaveUserFull;          // last saved user full name.
    QDateTime mSaveDateTime;
    QgsProjectVersion mSaveVersion;
 
    QString mHomePath;
    mutable QString mCachedHomePath;
 
    QColor mBackgroundColor;
    QColor mSelectionColor;
 
    mutable QgsProjectPropertyKey mProperties;  // property hierarchy, TODO: this shouldn't be mutable
    bool mAutoTransaction = false;       // transaction grouped editing
    bool mEvaluateDefaultValues = false; // evaluate default values immediately
    QgsCoordinateReferenceSystem mCrs;
    bool mDirty = false;                 // project has been modified since it has been read or saved
    int mDirtyBlockCount = 0;
    bool mTrustLayerMetadata = false;
 
    QgsPropertyCollection mDataDefinedServerProperties;
 
    QgsCoordinateTransformContext mTransformContext;
 
    QgsProjectMetadata mMetadata;
 
    std::unique_ptr< QTranslator > mTranslator;
 
    bool mIsBeingDeleted = false;
 
    QgsSettings mSettings;
 
    mutable std::unique_ptr< QgsExpressionContextScope > mProjectScope;
 
    int mBlockSnappingUpdates = 0;
 
    friend class QgsProjectDirtyBlocker;
 
    // Required to avoid creating a new project in it's destructor
    friend class QgsProviderRegistry;
 
    // Required by QGIS Server for switching the current project instance
    friend class QgsServer;
 
    friend class TestQgsProject;
 
    Q_DISABLE_COPY( QgsProject )
};
 
Q_DECLARE_OPERATORS_FOR_FLAGS( QgsProject::ReadFlags )
 
class CORE_EXPORT QgsProjectDirtyBlocker
{
  public:
 
    QgsProjectDirtyBlocker( QgsProject *project )
      : mProject( project )
    {
      mProject->mDirtyBlockCount++;
    }
 
    QgsProjectDirtyBlocker( const QgsProjectDirtyBlocker &other ) = delete;
 
    QgsProjectDirtyBlocker &operator=( const QgsProjectDirtyBlocker &other ) = delete;
 
    ~QgsProjectDirtyBlocker()
    {
      mProject->mDirtyBlockCount--;
    }
 
  private:
    QgsProject *mProject = nullptr;
 
#ifdef SIP_RUN
    QgsProjectDirtyBlocker( const QgsProjectDirtyBlocker &other );
#endif
};
 
CORE_EXPORT QgsProjectVersion getVersion( QDomDocument const &doc ) SIP_SKIP;
 
 
 
#ifndef SIP_RUN
class GetNamedProjectColor : public QgsScopedExpressionFunction
{
  public:
    GetNamedProjectColor( const QgsProject *project );
 
    GetNamedProjectColor( const QHash< QString, QColor > &colors );
 
    QVariant func( const QVariantList &values, const QgsExpressionContext *, QgsExpression *, const QgsExpressionNodeFunction * ) override;
    QgsScopedExpressionFunction *clone() const override;
 
  private:
 
    QHash< QString, QColor > mColors;
 
};
 
#endif
 
#endif