From 37096e019e187c8db7b6733380d2973b4c62b1c4 Mon Sep 17 00:00:00 2001
From: Rambaud Pierrick <12rambau@users.noreply.github.com>
Date: Thu, 27 Jul 2023 21:37:51 +0000
Subject: [PATCH] fix: make the layer group visibility togglable

---
 ipyleaflet/leaflet.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/ipyleaflet/leaflet.py b/ipyleaflet/leaflet.py
index 8e981f7f0..770f702eb 100644
--- a/ipyleaflet/leaflet.py
+++ b/ipyleaflet/leaflet.py
@@ -1211,12 +1211,15 @@ class LayerGroup(Layer):
     ----------
     layers: list, default []
         List of layers to include in the group.
+    visible: bool, default True
+        the visibility of the layer on the map
     """
 
     _view_name = Unicode('LeafletLayerGroupView').tag(sync=True)
     _model_name = Unicode('LeafletLayerGroupModel').tag(sync=True)
 
     layers = Tuple().tag(trait=Instance(Layer), sync=True, **widget_serialization)
+    visible = Bool(True).tag(sync=True)
 
     _layer_ids = List()
 
@@ -1341,6 +1344,11 @@ def clear(self):
         """Remove all layers from the group."""
         self.layers = ()
 
+    @observe("visible")
+    def toggle_markers(self, visible):
+        """Switch the layers visibility according to the master LayerGroup."""
+        [setattr(layer, "visible", visible["new"]) for layer in self.layers]
+
 
 class FeatureGroup(LayerGroup):
     """FeatureGroup abstract class."""