Source select widget: configure from layer URI

python/core/auto_generated/vector/qgsvectordataprovider.sip.in

@@ -55,6 +55,7 @@ of feature and attribute information from a spatial datasource.
       CreateLabeling,
       ReloadData,
       FeatureSymbology,
+      ConfigureSourceSelectFromUri,
     };
 
     typedef QFlags<QgsVectorDataProvider::Capability> Capabilities;

python/gui/auto_generated/qgsabstractdatasourcewidget.sip.in

@@ -78,6 +78,21 @@ this method on every reopening.
 This should clear any selection that has previously been done.
 
 .. versionadded:: 3.10
+%End
+
+    virtual bool configureFromUri( const QString &uri );
+%Docstring
+Configure the widget from a layer ``uri`` by selecting the layer path or connection options.
+The base implementation does nothing and returns ``False``: providers with ConfigureSourceSelectFromUri capability
+must override to implement this functionality.
+
+.. note::
+
+   Not all data providers may be able to configure the widget from the provided uri, in that case this method returns ``False``.
+
+:return: ``True`` on success.
+
+.. versionadded:: 3.38
 %End
 
   signals:

src/core/vector/qgsvectordataprovider.h

@@ -96,6 +96,7 @@ class CORE_EXPORT QgsVectorDataProvider : public QgsDataProvider, public QgsFeat
       CreateLabeling = 1 << 25, //!< Provider can set labeling settings using backend-specific formatting information. Since QGIS 3.6. See QgsVectorDataProvider::createLabeling().
       ReloadData = 1 << 26, //!< Provider is able to force reload data
       FeatureSymbology = 1 << 27, //!< Provider is able retrieve embedded symbology associated with individual features. Since QGIS 3.20.
+      ConfigureSourceSelectFromUri = 1 << 28, //!< Provider is able to configure the source select widget from a layer URI. Since QGIS 3.38.
     };
 
     Q_DECLARE_FLAGS( Capabilities, Capability )

src/gui/qgsabstractdatasourcewidget.cpp

@@ -65,3 +65,9 @@ void QgsAbstractDataSourceWidget::addButtonClicked()
 void QgsAbstractDataSourceWidget::reset()
 {
 }
+
+bool QgsAbstractDataSourceWidget::configureFromUri( const QString &uri )
+{
+  Q_UNUSED( uri );
+  return false;
+}

src/gui/qgsabstractdatasourcewidget.h

@@ -96,6 +96,16 @@ class GUI_EXPORT QgsAbstractDataSourceWidget : public QDialog
      */
     virtual void reset();
 
+    /**
+     * Configure the widget from a layer \a uri by selecting the layer path or connection options.
+     * The base implementation does nothing and returns FALSE: providers with ConfigureSourceSelectFromUri capability
+     * must override to implement this functionality.
+     * \note Not all data providers may be able to configure the widget from the provided uri, in that case this method returns FALSE.
+     * \return TRUE on success.
+     * \since 3.38
+     */
+    virtual bool configureFromUri( const QString &uri );
+
   signals:
 
     /**