fix dox and use metaEnum + switch to handle resolution method

src/analysis/CMakeLists.txt

@@ -187,6 +187,7 @@ SET(QGIS_ANALYSIS_MOC_HDRS
   vector/geometry_checker/qgsgeometrychecker.h
   vector/geometry_checker/qgsgeometrycheck.h
   vector/geometry_checker/qgsvectorlayerfeaturepool.h
+  vector/geometry_checker/qgsgeometrygapcheck.h
 )
 
 INCLUDE_DIRECTORIES(SYSTEM ${SPATIALITE_INCLUDE_DIR})
@@ -292,7 +293,6 @@ SET(QGIS_ANALYSIS_HDRS
   vector/geometry_checker/qgsgeometryduplicatecheck.h
   vector/geometry_checker/qgsgeometryduplicatenodescheck.h
   vector/geometry_checker/qgsgeometryfollowboundariescheck.h
-  vector/geometry_checker/qgsgeometrygapcheck.h
   vector/geometry_checker/qgsgeometrymissingvertexcheck.h
   vector/geometry_checker/qgsgeometryholecheck.h
   vector/geometry_checker/qgsgeometrylineintersectioncheck.h

src/analysis/vector/geometry_checker/qgsgeometrygapcheck.cpp

@@ -136,26 +136,32 @@ void QgsGeometryGapCheck::collectErrors( const QMap<QString, QgsFeaturePool *> &
 
 void QgsGeometryGapCheck::fixError( const QMap<QString, QgsFeaturePool *> &featurePools, QgsGeometryCheckError *error, int method, const QMap<QString, int> & /*mergeAttributeIndices*/, Changes &changes ) const
 {
-  if ( method == NoChange )
+  QMetaEnum metaEnum = QMetaEnum::fromType<QgsGeometryGapCheck::ResolutionMethod>();
+  if ( !metaEnum.isValid() || !metaEnum.valueToKey( method ) )
   {
-    error->setFixed( method );
+    error->setFixFailed( tr( "Unknown method" ) );
   }
-  else if ( method == MergeLongestEdge )
+  else
   {
-    QString errMsg;
-    if ( mergeWithNeighbor( featurePools, static_cast<QgsGeometryGapCheckError *>( error ), changes, errMsg ) )
-    {
-      error->setFixed( method );
-    }
-    else
+    ResolutionMethod methodValue = static_cast<ResolutionMethod>( method );
+    switch ( methodValue )
     {
-      error->setFixFailed( tr( "Failed to merge with neighbor: %1" ).arg( errMsg ) );
+      case NoChange:
+        error->setFixed( method );
+        break;
+      case MergeLongestEdge:
+        QString errMsg;
+        if ( mergeWithNeighbor( featurePools, static_cast<QgsGeometryGapCheckError *>( error ), changes, errMsg ) )
+        {
+          error->setFixed( method );
+        }
+        else
+        {
+          error->setFixFailed( tr( "Failed to merge with neighbor: %1" ).arg( errMsg ) );
+        }
+        break;
     }
   }
-  else
-  {
-    error->setFixFailed( tr( "Unknown method" ) );
-  }
 }
 
 bool QgsGeometryGapCheck::mergeWithNeighbor( const QMap<QString, QgsFeaturePool *> &featurePools,

src/analysis/vector/geometry_checker/qgsgeometrygapcheck.h

@@ -76,8 +76,15 @@ class ANALYSIS_EXPORT QgsGeometryGapCheckError : public QgsGeometryCheckError
 
 class ANALYSIS_EXPORT QgsGeometryGapCheck : public QgsGeometryCheck
 {
+    Q_GADGET
   public:
-    enum ResolutionMethod { MergeLongestEdge, NoChange };
+    //! Resolution methods for geometry gap checks
+    enum ResolutionMethod
+    {
+      MergeLongestEdge,
+      NoChange
+    };
+    Q_ENUM( ResolutionMethod )
 
     /**
      * The \a configuration accepts a "gapThreshold" key which specifies