fix(plothandler): cleanup XRangeSelection items when removing all signals

Closes #280

Author: PierreRaybaut

datalab/gui/plothandler.py

@@ -391,7 +391,10 @@ def refresh_plot(
         if what == "selected":
             # Refresh selected objects
             oids = self.panel.objview.get_sel_object_uuids(include_groups=True)
-            if len(oids) == 1:
+            if len(oids) <= 1:
+                # Cleanup data view when there is 0 or 1 selected object.
+                # This removes stray plot items (like XRangeSelection, DataInfoLabel)
+                # that were created by PlotPy tools but are not managed by DataLab.
                 self.cleanup_dataview()
             self.remove_all_shape_items()
             for item in self:

doc/locale/fr/LC_MESSAGES/release_notes/release_1.00.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: DataLab \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2025-12-13 13:42+0100\n"
+"POT-Creation-Date: 2025-12-13 14:17+0100\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language: fr\n"
@@ -27,6 +27,21 @@ msgstr ""
 msgid "🛠️ Bug Fixes since version 1.0.2"
 msgstr "🛠️ Correctifs depuis la version 1.0.2"
 
+msgid "**Signal view - XRangeSelection items persist after removing signals:**"
+msgstr "**Vue des signaux - Les éléments XRangeSelection persistent après la suppression des signaux :**"
+
+msgid "Fixed XRangeSelection and DataInfoLabel items (created by PlotPy's curve statistics tools) remaining visible on the plot after removing all signals"
+msgstr "Correction des éléments XRangeSelection et DataInfoLabel (créés par les outils de statistiques de courbes de PlotPy) restant visibles sur le graphique après la suppression de tous les signaux"
+
+msgid "When activating the XRangeSelection tool from the PlotPy toolbar and then removing the signal(s), these tool-created graphical objects were not cleaned up"
+msgstr "Lors de l'activation de l'outil XRangeSelection depuis la barre d'outils PlotPy, puis de la suppression du ou des signaux, ces objets graphiques créés par l'outil n'étaient pas nettoyés"
+
+msgid "The cleanup logic now correctly triggers when there are zero selected objects (after deleting the last one), not just when exactly one object is selected"
+msgstr "La logique de nettoyage se déclenche désormais correctement lorsqu'il n'y a aucun objet sélectionné (après la suppression du dernier), et pas seulement lorsqu'un seul objet est sélectionné"
+
+msgid "This closes [Issue #280](https://github.com/datalab-platform/datalab/issues/280) - XRangeSelection items persist after removing all signals"
+msgstr "Ceci clôture [Issue #280](https://github.com/datalab-platform/datalab/issues/280) - Les éléments XRangeSelection persistent après la suppression de tous les signaux"
+
 msgid "**Remote control - Crash when adding object via proxy:**"
 msgstr "**Contrôle distant - Plantage lors de l'ajout d'un objet via le proxy :**"
 

doc/release_notes/release_1.00.md

@@ -4,6 +4,13 @@
 
 ### 🛠️ Bug Fixes since version 1.0.2 ###
 
+**Signal view - XRangeSelection items persist after removing signals:**
+
+* Fixed XRangeSelection and DataInfoLabel items (created by PlotPy's curve statistics tools) remaining visible on the plot after removing all signals
+* When activating the XRangeSelection tool from the PlotPy toolbar and then removing the signal(s), these tool-created graphical objects were not cleaned up
+* The cleanup logic now correctly triggers when there are zero selected objects (after deleting the last one), not just when exactly one object is selected
+* This closes [Issue #280](https://github.com/datalab-platform/datalab/issues/280) - XRangeSelection items persist after removing all signals
+
 **Remote control - Crash when adding object via proxy:**
 
 * Fixed `AttributeError: 'NoneType' object has no attribute 'setText'` crash when adding objects via `RemoteProxy.add_object()` in macros