Nav: Tweak code to be easier to follow + updated todo list after clarifying an issue.

TODO.txt

@@ -235,8 +235,8 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - nav: menus: allow pressing Menu to leave a sub-menu.
  - nav: integrate/design keyboard controls. 
  - nav: simulate right-click or context activation? (SHIFT+F10)
- - nav: tabs should go through most/all widgets (in submission order?)
+ - nav: tabs should go through most/all widgets (in submission order?).
- - nav: currently cannot access menubar of a child window with Alt/menu key. 
+ - nav: cannot access menubar of a flattened child window with Alt/menu key (not a very common use case..).
  - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
  - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
  - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)

imgui.cpp

@@ -2289,16 +2289,16 @@ static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, con
     if (g.NavInitRequest && g.NavLayer == window->DC.NavLayerCurrent)
     {
         // Even if 'ImGuiItemFlags_NoNavDefaultFocus' is on (typically collapse/close button) we record the first ResultId so they can be used as a fallback
+        if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus) || g.NavInitResultId == 0)
+        {
+            g.NavInitResultId = id;
+            g.NavInitResultRectRel = nav_bb_rel;
+        }
         if (!(item_flags & ImGuiItemFlags_NoNavDefaultFocus))
         {
             g.NavInitRequest = false; // Found a match, clear request
             NavUpdateAnyRequestFlag();
         }
-        if (g.NavInitResultId == 0 || !(item_flags & ImGuiItemFlags_NoNavDefaultFocus))
-        {
-            g.NavInitResultId = id;
-            g.NavInitResultRectRel = nav_bb_rel;
-        }
     }
 
     // Scoring for navigation
@@ -13017,7 +13017,8 @@ void ImGui::ShowMetricsWindow(bool* p_open)
             ImGui::Text("HoveredId: 0x%08X/0x%08X (%.2f sec)", g.HoveredId, g.HoveredIdPreviousFrame, g.HoveredIdTimer); // Data is "in-flight" so depending on when the Metrics window is called we may see current frame information or not
             ImGui::Text("ActiveId: 0x%08X/0x%08X (%.2f sec), ActiveIdSource: %s", g.ActiveId, g.ActiveIdPreviousFrame, g.ActiveIdTimer, input_source_names[g.ActiveIdSource]);
             ImGui::Text("ActiveIdWindow: '%s'", g.ActiveIdWindow ? g.ActiveIdWindow->Name : "NULL");
-            ImGui::Text("NavWindow: '%s', NavId: 0x%08X, NavLayer: %d", g.NavWindow ? g.NavWindow->Name : "NULL", g.NavId, g.NavLayer);
+            ImGui::Text("NavWindow: '%s'", g.NavWindow ? g.NavWindow->Name : "NULL");
+            ImGui::Text("NavId: 0x%08X, NavLayer: %d", g.NavId, g.NavLayer);
             ImGui::Text("NavActive: %d, NavVisible: %d", g.IO.NavActive, g.IO.NavVisible);
             ImGui::Text("NavActivateId: 0x%08X, NavInputId: 0x%08X", g.NavActivateId, g.NavInputId);
             ImGui::Text("NavDisableHighlight: %d, NavDisableMouseHover: %d", g.NavDisableHighlight, g.NavDisableMouseHover);