Add API to TreeView to be able to save and restore the selection

doc/WhatsNew.rst

@@ -16,6 +16,7 @@ Ver 5.2.0 (unreleased)
 
 - Added alternate versions of installed fonts to the default font set
   (bold, italic, light)
+- Some minor bug fixes for TreeView in Gtk3 backend
 
 Ver 5.1.0 (2024-05-22)
 ======================

ginga/gtk3w/Widgets.py

@@ -1018,13 +1018,26 @@ def clear_selection(self):
         treeselection = self.tv.get_selection()
         treeselection.unselect_all()
 
-    def select_path(self, path, state=True):
+    def get_selected_paths(self):
         treeselection = self.tv.get_selection()
-        item = self._path_to_item(path)
-        if state:
-            treeselection.select_iter(item)
-        else:
-            treeselection.unselect_iter(item)
+        model, pathlist = treeselection.get_selected_rows()
+        paths = []
+        for path in pathlist:
+            item = model.get_iter(path)
+            paths.append(self._get_path(item))
+        return paths
+
+    def select_paths(self, paths, state=True):
+        treeselection = self.tv.get_selection()
+        for path in paths:
+            item = self._path_to_item(path)
+            if state:
+                treeselection.select_iter(item)
+            else:
+                treeselection.unselect_iter(item)
+
+    def select_path(self, path, state=True):
+        self.select_paths([path], state=state)
 
     def highlight_path(self, path, onoff, font_color='green'):
         item = self._path_to_item(path)  # noqa
@@ -1109,7 +1122,8 @@ def fn(*args):
             column, cell, model, iter = args[:4]
             bnch = model.get_value(iter, 0)
             if isinstance(bnch, str):
-                cell.set_property('text', bnch)
+                if not isinstance(cell, Gtk.CellRendererPixbuf):
+                    cell.set_property('text', bnch)
             elif isinstance(bnch, GdkPixbuf.Pixbuf):
                 cell.set_property('pixbuf', bnch)
             elif isinstance(bnch[idx], GdkPixbuf.Pixbuf):
@@ -1123,7 +1137,8 @@ def fn(*args):
             column, cell, model, iter = args[:4]
             bnch = model.get_value(iter, 0)
             if isinstance(bnch, str):
-                cell.set_property('text', '')
+                if not isinstance(cell, Gtk.CellRendererPixbuf):
+                    cell.set_property('text', '')
             elif isinstance(bnch, GdkPixbuf.Pixbuf):
                 cell.set_property('text', '')
             elif isinstance(bnch[idx], GdkPixbuf.Pixbuf):

ginga/qtw/Widgets.py

@@ -979,6 +979,19 @@ def select_path(self, path, state=True):
         finally:
             self.widget.blockSignals(False)
 
+    def get_selected_paths(self):
+        items = list(self.widget.selectedItems())
+        return [self._get_path(item) for item in items]
+
+    def select_paths(self, paths, state=True):
+        self.widget.blockSignals(True)
+        try:
+            for path in paths:
+                item = self._path_to_item(path)
+                item.setSelected(state)
+        finally:
+            self.widget.blockSignals(False)
+
     def highlight_path(self, path, onoff, font_color='green'):
         item = self._path_to_item(path)
 

ginga/web/pgw/Widgets.py

@@ -1582,6 +1582,14 @@ def get_selected(self):
             self._get_item(res_dict, rowNum)
         return res_dict
 
+    def get_selected_paths(self):
+        return [self._get_path(row_num)
+                for row_num in self.selectedRows]
+
+    def select_paths(self, paths, state=True):
+        for path in paths:
+            self.select_path(path, state=state)
+
     def clear(self):
         self.rowid = -1
         self.rows = []