message: Factorized some code (+ declared as static function without namespace, a pattern with the Nav branch has started to use)
diff: @@ -659,6 +659,11 @@ static inline void DataTypeFormatString(ImGuiDataType data_type, void* data
  static void DataTypeApplyOp(ImGuiDataType data_type, int op, void* value1, const void* value2);
  static bool DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* scalar_format);
  +namespace ImGui
  +{
  +static void FocusPreviousWindow();
  +}
  +
  //-----------------------------------------------------------------------------
  // Platform dependent default implementations
  //-----------------------------------------------------------------------------
  @@ -2436,12 +2441,7 @@ void ImGui::NewFrame()
  // Closing the focused window restore focus to the first active root window in descending z-order
  if (g.NavWindow && !g.NavWindow->WasActive)
  - for (int i = g.Windows.Size-1; i >= 0; i--)
  - if (g.Windows[i]->WasActive && !(g.Windows[i]->Flags & ImGuiWindowFlags_ChildWindow))
  - {
  - FocusWindow(g.Windows[i]);
  - break;
  - }
  + FocusPreviousWindow();
  // No window should be open at the beginning of the frame.
  // But in order to allow the user to call NewFrame() multiple times without calling Render(), we are doing an explicit clear.
  @@ -4835,6 +4835,17 @@ void ImGui::FocusWindow(ImGuiWindow* window)
  g.Windows.push_back(window);
  }
  +void ImGui::FocusPreviousWindow()
  +{
  + ImGuiContext& g = *GImGui;
  + for (int i = g.Windows.Size - 1; i >= 0; i--)
  + if (g.Windows[i]->WasActive && !(g.Windows[i]->Flags & ImGuiWindowFlags_ChildWindow))
  + {
  + FocusWindow(g.Windows[i]);
  + return;
  + }
  +}
  +
  void ImGui::PushItemWidth(float item_width)
  {
  ImGuiWindow* window = GetCurrentWindow();
  