Merge pull request #8229 from signedav/duplication-context-fix

Select feature menu on action with multiple features

Author: m-kuhn

src/app/qgsmaptoolfeatureaction.cpp

@@ -15,7 +15,6 @@
 
 #include "qgsmaptoolfeatureaction.h"
 
-#include "qgsfeature.h"
 #include "qgsfeatureiterator.h"
 #include "qgsfields.h"
 #include "qgsgeometry.h"
@@ -96,6 +95,7 @@ bool QgsMapToolFeatureAction::doAction( QgsVectorLayer *layer, int x, int y )
     return false;
 
   QgsPointXY point = mCanvas->getCoordinateTransform()->toMapCoordinates( x, y );
+  QPoint position = mCanvas->mapToGlobal( QPoint( x + 5, y + 5 ) );
 
   QgsRectangle r;
 
@@ -121,36 +121,67 @@ bool QgsMapToolFeatureAction::doAction( QgsVectorLayer *layer, int x, int y )
     QgsDebugMsg( QStringLiteral( "Caught CRS exception %1" ).arg( cse.what() ) );
   }
 
-  QgsAction defaultAction = layer->actions()->defaultAction( QStringLiteral( "Canvas" ) );
-
+  QgsFeature f;
+  QgsFeatureList features;
   QgsFeatureIterator fit = layer->getFeatures( QgsFeatureRequest().setFilterRect( r ).setFlags( QgsFeatureRequest::ExactIntersect ) );
-  QgsFeature feat;
-  while ( fit.nextFeature( feat ) )
+  while ( fit.nextFeature( f ) )
+  {
+    features.append( f );
+  }
+
+  if ( !features.isEmpty() )
   {
-    if ( defaultAction.isValid() )
+    if ( features.count() == 1 )
     {
-      // define custom substitutions: layer id and clicked coords
-      QgsExpressionContext context;
-      context << QgsExpressionContextUtils::globalScope()
-              << QgsExpressionContextUtils::projectScope( QgsProject::instance() )
-              << QgsExpressionContextUtils::mapSettingsScope( mCanvas->mapSettings() );
-      QgsExpressionContextScope *actionScope = new QgsExpressionContextScope();
-      actionScope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "click_x" ), point.x(), true ) );
-      actionScope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "click_y" ), point.y(), true ) );
-      actionScope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "action_scope" ), QStringLiteral( "Canvas" ), true ) );
-      context << actionScope;
-
-      defaultAction.run( layer, feat, context );
+      doActionForFeature( layer, features.first(), point );
     }
     else
     {
-      QgsMapLayerAction *mapLayerAction = QgsGui::mapLayerActionRegistry()->defaultActionForLayer( layer );
-      if ( mapLayerAction )
+      QMenu *featureMenu = new QMenu();
+      for ( const QgsFeature &feature : qgis::as_const( features ) )
       {
-        mapLayerAction->triggerForFeature( layer, &feat );
+        QAction *featureAction = featureMenu->addAction( FID_TO_STRING( feature.id() ) );
+        connect( featureAction, &QAction::triggered, this, [ = ] { doActionForFeature( layer, feature, point );} );
       }
+      QAction *allFeatureAction = featureMenu->addAction( tr( "All Features" ) );
+      connect( allFeatureAction, &QAction::triggered, this, [ = ]
+      {
+        for ( const QgsFeature &feature : qgis::as_const( features ) )
+        {
+          doActionForFeature( layer, feature, point );
+        }
+      } );
+      featureMenu->exec( position );
     }
+    return true;
   }
+  return false;
+}
 
-  return true;
+void QgsMapToolFeatureAction::doActionForFeature( QgsVectorLayer *layer, const QgsFeature &feature, const QgsPointXY &point )
+{
+  QgsAction defaultAction = layer->actions()->defaultAction( QStringLiteral( "Canvas" ) );
+  if ( defaultAction.isValid() )
+  {
+    // define custom substitutions: layer id and clicked coords
+    QgsExpressionContext context;
+    context << QgsExpressionContextUtils::globalScope()
+            << QgsExpressionContextUtils::projectScope( QgsProject::instance() )
+            << QgsExpressionContextUtils::mapSettingsScope( mCanvas->mapSettings() );
+    QgsExpressionContextScope *actionScope = new QgsExpressionContextScope();
+    actionScope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "click_x" ), point.x(), true ) );
+    actionScope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "click_y" ), point.y(), true ) );
+    actionScope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "action_scope" ), QStringLiteral( "Canvas" ), true ) );
+    context << actionScope;
+
+    defaultAction.run( layer, feature, context );
+  }
+  else
+  {
+    QgsMapLayerAction *mapLayerAction = QgsGui::mapLayerActionRegistry()->defaultActionForLayer( layer );
+    if ( mapLayerAction )
+    {
+      mapLayerAction->triggerForFeature( layer, &feature );
+    }
+  }
 }

src/app/qgsmaptoolfeatureaction.h

@@ -24,6 +24,7 @@
 #include "qgis_app.h"
 
 class QgsVectorLayer;
+class QgsFeature;
 
 /**
   \brief Map tool for running feature actions on the current layer
@@ -52,6 +53,7 @@ class APP_EXPORT QgsMapToolFeatureAction : public QgsMapTool
 
   private:
     bool doAction( QgsVectorLayer *layer, int x, int y );
+    void doActionForFeature( QgsVectorLayer *layer, const QgsFeature &feature, const QgsPointXY &point );
 };
 
 #endif