Improve overwrite warning behavior in export

CHANGES.rst

@@ -196,6 +196,8 @@ Bug Fixes
 
 - Previous zoom tool is optimized to only issue one zoom update to the viewer. [#2949]
 
+- Fixes overwrite behavior for plugin plots, and properly closes overwrite warning overlay after confirmation. [#3094]
+
 Cubeviz
 ^^^^^^^
 

jdaviz/configs/default/plugins/export/export.py

@@ -457,13 +457,7 @@
         elif len(self.plugin_plot.selected):
             plot = self.plugin_plot.selected_obj._obj
             filetype = self.plugin_plot_format.selected
-
-            if len(filename):
-                if not filename.endswith(filetype):
-                    filename += f".{filetype}"
-                filename = Path(filename).expanduser()
-            else:
-                filename = None
+            filename = self._normalize_filename(filename, filetype, overwrite=overwrite)
 
             if not plot._plugin.is_active:
                 # force an update to the plot.  This requires the plot to have set
@@ -474,11 +468,16 @@
                 # in case one was never created in the parent plugin
                 self.plugin_plot_selected_widget = f'IPY_MODEL_{plot.model_id}'
 
+            if self.overwrite_warn and not overwrite:
+                if raise_error_for_overwrite:
+                    raise FileExistsError(f"{filename} exists but overwrite=False")
+                return
+
             self.save_figure(plot, filename, filetype, show_dialog=show_dialog)
 
         elif len(self.plugin_table.selected):
             filetype = self.plugin_table_format.selected
-            filename = self._normalize_filename(filename, filetype)
+            filename = self._normalize_filename(filename, filetype, overwrite=overwrite)
             if self.overwrite_warn and not overwrite:
                 if raise_error_for_overwrite:
                     raise FileExistsError(f"{filename} exists but overwrite=False")
@@ -539,6 +538,7 @@
             if filename is not None:
                 self.hub.broadcast(SnackbarMessage(
                     f"Exported to {filename} (overwrite)", sender=self, color="success"))
+            self.overwrite_warn = False
 
     def save_figure(self, viewer, filename=None, filetype="png", show_dialog=False):
         if filetype == "png":