reports: Add BaseODS.set_open_sheet() method.

conservancy_beancount/reports/core.py

@@ -952,6 +952,21 @@ class BaseODS(BaseSpreadsheet[RT, ST], metaclass=abc.ABCMeta):
         self.set_config(config_map, 'VerticalSplitMode', 2, 'short')
         self.set_config(config_map, 'VerticalSplitPosition', 1, 'short')
 
+    def set_open_sheet(self, sheet: Union[str, odf.table.Table, None]=None) -> None:
+        """Set which sheet is open in the document
+
+        When the user first opens the spreadsheet, their view will be on this
+        sheet. You can provide a sheet name string or sheet object. With no
+        argument, defaults to ``self.sheet``.
+        """
+        if sheet is None:
+            sheet = self.sheet
+        if not isinstance(sheet, str):
+            sheet = sheet.getAttribute('name')
+            if not isinstance(sheet, str):
+                raise ValueError("sheet argument has no name for setting")
+        self.set_config(self.view, 'ActiveTable', sheet, 'string')
+
     def use_sheet(self, name: str) -> odf.table.Table:
         """Switch the active sheet ``self.sheet`` to the one with the given name
 

tests/test_reports_spreadsheet.py

@@ -479,6 +479,24 @@ def test_ods_lock_first_cells(ods_writer, method_name, split_name, side_name):
         assert child.getAttribute('type') == ctype
         assert child.firstChild.data == value
 
+@pytest.mark.parametrize('arg', [
+    None,
+    'Target Sheet',
+    odf.table.Table(name='Target Sheet'),
+])
+def test_ods_set_open_sheet(ods_writer, arg):
+    ods_writer.use_sheet('Start Sheet' if arg else 'Target Sheet')
+    ods_writer.set_open_sheet(arg)
+    view_settings = get_child(
+        ods_writer.document.settings,
+        odf.config.ConfigItemSet,
+        name='ooo:view-settings',
+    )
+    views = get_child(view_settings, odf.config.ConfigItemMapIndexed, name='Views')
+    view1 = get_child(views, odf.config.ConfigItemMapEntry, index=0)
+    actual = get_child(view1, odf.config.ConfigItem, name='ActiveTable')
+    assert actual.text == 'Target Sheet'
+
 @pytest.mark.parametrize('style_name', XML_NAMES_LIST)
 def test_ods_writer_add_row(ods_writer, style_name):
     cell1 = ods_writer.string_cell('one')