From f1e6745fe75d7366ed1add3a974ea833b3ccd0c9 Mon Sep 17 00:00:00 2001
From: Denis Rouzaud <denis.rouzaud@gmail.com>
Date: Wed, 20 Nov 2019 08:07:09 +0100
Subject: [PATCH] [quick] add utility method to select feature using their IDs
 from QML (#32735)

* [quick] add utility method to select feature using their IDs from QML

* Update qgsquickutils.cpp
---
 src/quickgui/qgsquickutils.cpp |  8 ++++++++
 src/quickgui/qgsquickutils.h   | 11 +++++++++++
 2 files changed, 19 insertions(+)

diff --git a/src/quickgui/qgsquickutils.cpp b/src/quickgui/qgsquickutils.cpp
index 4839ada363f..8830c606327 100644
--- a/src/quickgui/qgsquickutils.cpp
+++ b/src/quickgui/qgsquickutils.cpp
@@ -375,6 +375,14 @@ QString QgsQuickUtils::evaluateExpression( const QgsQuickFeatureLayerPair &pair,
   return expr.evaluate( &context ).toString();
 }
 
+void QgsQuickUtils::selectFeaturesInLayer( QgsVectorLayer *layer, const QList<int> &fids, QgsVectorLayer::SelectBehavior behavior )
+{
+  QgsFeatureIds qgsFids;
+  for ( const int &fid : fids )
+    qgsFids << fid;
+  layer->selectByIds( qgsFids, behavior );
+}
+
 qreal QgsQuickUtils::screenDensity() const
 {
   return mScreenDensity;
diff --git a/src/quickgui/qgsquickutils.h b/src/quickgui/qgsquickutils.h
index 48c5c299b8e..ed4ccf2aaca 100644
--- a/src/quickgui/qgsquickutils.h
+++ b/src/quickgui/qgsquickutils.h
@@ -253,6 +253,17 @@ class QUICK_EXPORT QgsQuickUtils: public QObject
      */
     Q_INVOKABLE static QString evaluateExpression( const QgsQuickFeatureLayerPair &pair, QgsProject *activeProject, const QString &expression );
 
+    /**
+     * Selects features in a layer
+     * This method is required since QML cannot perform the conversion of a feature ID to a QgsFeatureId (i.e. a qint64)
+     * \param layer the vector layer
+     * \param fids the list of feature IDs
+     * \param behavior the selection behavior
+     *
+     * \since QGIS 3.12
+     */
+    Q_INVOKABLE static void selectFeaturesInLayer( QgsVectorLayer *layer, const QList<int> &fids, QgsVectorLayer::SelectBehavior behavior = QgsVectorLayer::SetSelection );
+
   private:
     static void formatToMetricDistance( double srcDistance,
                                         QgsUnitTypes::DistanceUnit srcUnits,