[Bf-blender-cvs] [59f49072d06] master: Fix T87308: don't show columns when there are no instances

[Jacques Lucke]

Commit: 59f49072d06859f69e9f6e381f5f7f168ee74d24
Author: Jacques Lucke
Date:   Mon Apr 12 09:10:26 2021 +0200
Branches: master
https://developer.blender.org/rB59f49072d06859f69e9f6e381f5f7f168ee74d24

Fix T87308: don't show columns when there are no instances

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M	source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.cc

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diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.cc b/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.cc
index 337e1e68f1a..f33a6473d45 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.cc
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.cc
@@ -284,6 +284,10 @@ Span<int64_t> GeometryDataSource::get_selected_element_indices() const
 void InstancesDataSource::foreach_default_column_ids(
     FunctionRef<void(const SpreadsheetColumnID &)> fn) const
 {
+  if (component_->instances_amount() == 0) {
+    return;
+  }
+
   SpreadsheetColumnID column_id;
   column_id.index = -1;
   column_id.name = (char *)"Name";
@@ -300,6 +304,10 @@ void InstancesDataSource::foreach_default_column_ids(
 std::unique_ptr<ColumnValues> InstancesDataSource::get_column_values(
     const SpreadsheetColumnID &column_id) const
 {
+  if (component_->instances_amount() == 0) {
+    return {};
+  }
+
   const std::array<const char *, 3> suffixes = {" X", " Y", " Z"};
   const int size = this->tot_rows();
   if (STREQ(column_id.name, "Name")) {