reading of all the custom properties to e.g. copy them to the offline…

… project
qgis · Mar 18, 2020 · 8131799 · 8131799
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commit 8131799
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diff --git a/python/core/auto_generated/qgsmaplayer.sip.in b/python/core/auto_generated/qgsmaplayer.sip.in
@@ -608,6 +608,15 @@ Read a custom property from layer. Properties are stored in a map and saved in p
 Set custom properties for layer. Current properties are dropped.
 
 .. versionadded:: 3.0
+%End
+
+    const QgsObjectCustomProperties &customProperties() const;
+%Docstring
+Read all custom properties from layer. Properties are stored in a map and saved in project file.
+
+.. seealso:: :py:func:`setCustomProperties`
+
+.. versionadded:: 3.14
 %End
 
     void removeCustomProperty( const QString &key );

diff --git a/src/core/qgsmaplayer.cpp b/src/core/qgsmaplayer.cpp
@@ -1699,6 +1699,11 @@ void QgsMapLayer::setCustomProperties( const QgsObjectCustomProperties &properti
   mCustomProperties = properties;
 }
 
+const QgsObjectCustomProperties &QgsMapLayer::customProperties() const
+{
+  return mCustomProperties;
+}
+
 QVariant QgsMapLayer::customProperty( const QString &value, const QVariant &defaultValue ) const
 {
   return mCustomProperties.value( value, defaultValue );

diff --git a/src/core/qgsmaplayer.h b/src/core/qgsmaplayer.h
@@ -614,6 +614,13 @@ class CORE_EXPORT QgsMapLayer : public QObject
      */
     void setCustomProperties( const QgsObjectCustomProperties &properties );
 
+    /**
+     * Read all custom properties from layer. Properties are stored in a map and saved in project file.
+     * \see setCustomProperties
+     * \since QGIS 3.14
+     */
+    const QgsObjectCustomProperties &customProperties() const;
+
     /**
      * Remove a custom property from layer. Properties are stored in a map and saved in project file.
      * \see setCustomProperty()

diff --git a/src/core/qgsofflineediting.cpp b/src/core/qgsofflineediting.cpp
@@ -848,6 +848,9 @@ QgsVectorLayer *QgsOfflineEditing::copyVectorLayer( QgsVectorLayer *layer, sqlit
       showWarning( newLayer->commitErrors().join( QStringLiteral( "\n" ) ) );
     }
 
+    // copy the custom properties from original layer
+    newLayer->setCustomProperties( layer->customProperties() );
+
     // mark as offline layer
     newLayer->setCustomProperty( CUSTOM_PROPERTY_IS_OFFLINE_EDITABLE, true );