Settings: added a type name filter to CleanupIniSettings() / ImGuiSettingsCleanupArgs. Amends. (#9460)

Request hash because storing const char* strings in struct is not entirely zen. Amend 2c49da4.

Author: ocornut

imgui.cpp

@@ -15713,12 +15713,11 @@ void ImGui::CleanupIniSettings(ImGuiSettingsCleanupArgs* args)
     ImGuiContext& g = *GImGui;
     if (g.PlatformIO.Platform_SessionDate == 0)
         return;
-    ImGuiID type_hash_filter = args->TypeName ? ImHashStr(args->TypeName) : 0;
     ImGuiPackedDate discard_older_than_date_p = g.PlatformIO.Platform_SessionDate;
     discard_older_than_date_p.SubtractMonths(args->DiscardOlderThanMonths);
     args->_DiscardOlderThanDate = discard_older_than_date_p.Unpack();
     for (ImGuiSettingsHandler& handler : g.SettingsHandlers)
-        if (type_hash_filter == 0 || handler.TypeHash == type_hash_filter)
+        if (args->TypeHashFilter == 0 || handler.TypeHash == args->TypeHashFilter)
             if (handler.CleanupFn != NULL)
                 handler.CleanupFn(&g, &handler, args);
 }

imgui_internal.h

@@ -2048,7 +2048,7 @@ struct ImGuiWindowSettings
 
 struct ImGuiSettingsCleanupArgs
 {
-    const char*     TypeName = NULL;                                // Set to restrict cleanup to a given .ini type, e.g. "Window", "Table". Otherwise every types supporting Cleanup are supported.
+    ImGuiID         TypeHashFilter = 0;                             // Set to restrict cleanup to a given .ini type, e.g. == ImHashStr("Window"), ImHashStr("Table"). Otherwise every types supporting Cleanup will be affected.
     int             DiscardOlderThanMonths = 0;                     // Enable to discard entries older than XX months.
     bool            DiscardWhenMissingDate = false;                 // Enable to discard entries missing a date.
     bool            SetCurrentSessionDateToAll = false;             // Enable to write current SessionDate to all supporting entries. // Let us know in #9460 if you use this.