UI: File browser deselect on click on empty space

For the default and industry compatible keymap, clicking on empty space
in the file browser will deselect all files.

Also makes selection use same operator description we use for other
select operators.

1 files changed, 15 insertions, 3 deletions

diff --git a/source/blender/editors/space_file/file_ops.c b/source/blender/editors/space_file/file_ops.c
index c6061cb6f58..127196cca74 100644
--- a/source/blender/editors/space_file/file_ops.c
+++ b/source/blender/editors/space_file/file_ops.c
@@ -489,6 +489,7 @@ static int file_select_invoke(bContext *C, wmOperator *op, const wmEvent *event)
   const bool extend = RNA_boolean_get(op->ptr, "extend");
   const bool fill = RNA_boolean_get(op->ptr, "fill");
   const bool do_diropen = RNA_boolean_get(op->ptr, "open");
+  const bool deselect_all = RNA_boolean_get(op->ptr, "deselect_all");
 
   if (ar->regiontype != RGN_TYPE_WINDOW) {
     return OPERATOR_CANCELLED;
@@ -521,10 +522,15 @@ static int file_select_invoke(bContext *C, wmOperator *op, const wmEvent *event)
     filelist_entry_parent_select_set(sfile->files, FILE_SEL_REMOVE, FILE_SEL_SELECTED, CHECK_ALL);
   }
 
-  if (FILE_SELECT_DIR == ret) {
+  if (ret == FILE_SELECT_NOTHING) {
+    if (deselect_all) {
+      file_deselect_all(sfile, FILE_SEL_SELECTED);
+    }
+  }
+  else if (ret == FILE_SELECT_DIR) {
     WM_event_add_notifier(C, NC_SPACE | ND_SPACE_FILE_LIST, NULL);
   }
-  else if (FILE_SELECT_FILE == ret) {
+  else if (ret == FILE_SELECT_FILE) {
     WM_event_add_notifier(C, NC_SPACE | ND_SPACE_FILE_PARAMS, NULL);
   }
 
@@ -540,8 +546,8 @@ void FILE_OT_select(wmOperatorType *ot)
 
   /* identifiers */
   ot->name = "Select";
-  ot->description = "Activate/select file";
   ot->idname = "FILE_OT_select";
+  ot->description = "Handle mouse clicks to select and activate items";
 
   /* api callbacks */
   ot->invoke = file_select_invoke;
@@ -559,6 +565,12 @@ void FILE_OT_select(wmOperatorType *ot)
   RNA_def_property_flag(prop, PROP_SKIP_SAVE);
   prop = RNA_def_boolean(ot->srna, "open", true, "Open", "Open a directory when selecting it");
   RNA_def_property_flag(prop, PROP_SKIP_SAVE);
+  prop = RNA_def_boolean(ot->srna,
+                         "deselect_all",
+                         false,
+                         "Deselect On Nothing",
+                         "Deselect all when nothing under the cursor");
+  RNA_def_property_flag(prop, PROP_SKIP_SAVE);
 }
 
 /**