From 975fbe53de9cf980665ab4d5809a148880985a9f Mon Sep 17 00:00:00 2001
From: Florian Kargl <f.kargl@posteo.de>
Date: Sat, 20 Aug 2022 15:03:49 +0200
Subject: [PATCH] Allow selection of relations in relation membership table via
 middle click

---
 .../dialogs/properties/PropertiesDialog.java  | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/org/openstreetmap/josm/gui/dialogs/properties/PropertiesDialog.java b/src/org/openstreetmap/josm/gui/dialogs/properties/PropertiesDialog.java
index 5fd62166f4e..7c04314cba8 100644
--- a/src/org/openstreetmap/josm/gui/dialogs/properties/PropertiesDialog.java
+++ b/src/org/openstreetmap/josm/gui/dialogs/properties/PropertiesDialog.java
@@ -999,6 +999,25 @@ public Collection<OsmPrimitive> getSelection() {
     public class MouseClickWatch extends MouseAdapter {
         @Override
         public void mouseClicked(MouseEvent e) {
+            if (e.getSource() == membershipTable && e.getButton() == MouseEvent.BUTTON2) {
+                int row = membershipTable.rowAtPoint(e.getPoint());
+                if (row > -1) {
+                    final Relation relation = (Relation) membershipData.getValueAt(row, 0);
+                    DataSet ds = OsmDataManager.getInstance().getActiveDataSet();
+
+                    if (ds != null) {
+                        if (e.isShiftDown()) {
+                            ds.addSelected(relation);
+                        } else if (e.isControlDown()) {
+                            ds.toggleSelected(relation);
+                        } else {
+                            ds.setSelected(relation);
+                        }
+                    }
+                }
+                return;
+            }
+
             if (e.getClickCount() < 2) {
                 // single click, clear selection in other table not clicked in
                 if (e.getSource() == tagTable) {