UI: Rename search button variable

I landed D10527 in rB1a8aee0a7cec accidentally, and the version there was
missing a name change discussed in review. This commit just renames the
boolean variable controlling the special behavior for attribute search.

Original message meant for this change:
For geometry nodes we will use search buttons to display a list of
attributes available the last time the node tree was executed (D10519).
Because this list is just a hint, we need to be able to enter any string,
not just strings from the search items.

This patch adds a boolean option to string buttons to enable this.
The change is quite simple, changes to behavior are only required in
two places. The type-specific button struct changes help a lot here.

Differential Revision: https://developer.blender.org/D10527

source/blender/editors/include/UI_interface.h

@@ -1606,7 +1606,7 @@ void UI_but_func_search_set(uiBut *but,
 void UI_but_func_search_set_context_menu(uiBut *but, uiButSearchContextMenuFn context_menu_fn);
 void UI_but_func_search_set_tooltip(uiBut *but, uiButSearchTooltipFn tooltip_fn);
 void UI_but_func_search_set_sep_string(uiBut *but, const char *search_sep_string);
-void UI_but_func_search_set_all_strings_valid(uiBut *but, const bool value);
+void UI_but_func_search_set_results_are_suggestions(uiBut *but, const bool value);
 
 /* height in pixels, it's using hardcoded values still */
 int UI_searchbox_size_y(void);

source/blender/editors/interface/interface.c

@@ -6661,12 +6661,12 @@ void UI_but_func_search_set_tooltip(uiBut *but, uiButSearchTooltipFn tooltip_fn)
   but_search->item_tooltip_fn = tooltip_fn;
 }
 
-void UI_but_func_search_set_all_strings_valid(uiBut *but, const bool value)
+void UI_but_func_search_set_results_are_suggestions(uiBut *but, const bool value)
 {
   uiButSearch *but_search = (uiButSearch *)but;
   BLI_assert(but->type == UI_BTYPE_SEARCH_MENU);
 
-  but_search->all_strings_valid = value;
+  but_search->results_are_suggestions = value;
 }
 
 /* Callbacks for operator search button. */

source/blender/editors/interface/interface_handlers.c

@@ -3413,7 +3413,7 @@ static void ui_textedit_end(bContext *C, uiBut *but, uiHandleButtonData *data)
 
         if ((ui_searchbox_apply(but, data->searchbox) == false) &&
             (ui_searchbox_find_index(data->searchbox, but->editstr) == -1) &&
-            !but_search->all_strings_valid) {
+            !but_search->results_are_suggestions) {
           data->cancel = true;
 
           /* ensure menu (popup) too is closed! */

source/blender/editors/interface/interface_intern.h

@@ -325,7 +325,7 @@ typedef struct uiButSearch {
    * The search box only provides suggestions, it does not force
    * the string to match one of the search items when applying.
    */
-  bool all_strings_valid;
+  bool results_are_suggestions;
 } uiButSearch;
 
 /** Derived struct for #UI_BTYPE_DECORATOR */

source/blender/editors/interface/interface_region_search.c

@@ -1053,7 +1053,7 @@ void ui_but_search_refresh(uiButSearch *search_but)
 
   ui_searchbox_update_fn(but->block->evil_C, search_but, but->drawstr, items);
 
-  if (!search_but->all_strings_valid) {
+  if (!search_but->results_are_suggestions) {
     /* Only red-alert when we are sure of it, this can miss cases when >10 matches. */
     if (items->totitem == 0) {
       UI_but_flag_enable(but, UI_BUT_REDALERT);