Spreadsheet: add boilerplate code for new editor type

This adds the initial boilerplate code that is required to introduce
the new spreadsheet editor. The editor is still hidden from the ui.

It can be made visible by undoing the change in `rna_screen.c`.

This patch does not contain any business logic for the spreadsheet editor.

Differential Revision: https://developer.blender.org/D10645

Ref T86279.

1 files changed, 39 insertions, 0 deletions

diff --git a/release/scripts/startup/bl_ui/space_spreadsheet.py b/release/scripts/startup/bl_ui/space_spreadsheet.py
new file mode 100644
index 00000000000..e433ead070c
--- /dev/null
+++ b/release/scripts/startup/bl_ui/space_spreadsheet.py
@@ -0,0 +1,39 @@
+# ##### BEGIN GPL LICENSE BLOCK #####
+#
+#  This program is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License
+#  as published by the Free Software Foundation; either version 2
+#  of the License, or (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software Foundation,
+#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# ##### END GPL LICENSE BLOCK #####
+
+import bpy
+
+
+class SPREADSHEET_HT_header(bpy.types.Header):
+    bl_space_type = 'SPREADSHEET'
+
+    def draw(self, context):
+        layout = self.layout
+        space = context.space_data
+
+        layout.template_header()
+
+
+classes = (
+    SPREADSHEET_HT_header,
+)
+
+if __name__ == "__main__":  # Only for live edit.
+    from bpy.utils import register_class
+    for cls in classes:
+        register_class(cls)