Method FocusWindow

src/third-party/imgui/imgui.cpp:6727–6768

Moving window to front of display and set focus (which happens to be back of our sorted list)

// Moving window to front of display and set focus (which happens to be back of our sorted list)
void ImGui::FocusWindow(ImGuiWindow* window)
{
    ImGuiContext& g = *GImGui;

    if (g.NavWindow != window)
    {
        g.NavWindow = window;
        if (window && g.NavDisableMouseHover)
            g.NavMousePosDirty = true;
        g.NavId = window ? window->NavLastIds[0] : 0; // Restore NavId
        g.NavFocusScopeId = 0;
        g.NavIdIsAlive = false;
        g.NavLayer = ImGuiNavLayer_Main;
        g.NavInitRequest = g.NavMoveSubmitted = g.NavMoveScoringItems = false;
        NavUpdateAnyRequestFlag();
        //IMGUI_DEBUG_LOG("FocusWindow(\"%s\")\n", window ? window->Name : NULL);
    }

    // Close popups if any
    ClosePopupsOverWindow(window, false);

    // Move the root window to the top of the pile
    IM_ASSERT(window == NULL || window->RootWindow != NULL);
    ImGuiWindow* focus_front_window = window ? window->RootWindow : NULL; // NB: In docking branch this is window->RootWindowDockStop
    ImGuiWindow* display_front_window = window ? window->RootWindow : NULL;

    // Steal active widgets. Some of the cases it triggers includes:
    // - Focus a window while an InputText in another window is active, if focus happens before the old InputText can run.
    // - When using Nav to activate menu items (due to timing of activating on press->new window appears->losing ActiveId)
    if (g.ActiveId != 0 && g.ActiveIdWindow && g.ActiveIdWindow->RootWindow != focus_front_window)
        if (!g.ActiveIdNoClearOnFocusLoss)
            ClearActiveID();

    // Passing NULL allow to disable keyboard focus
    if (!window)
        return;

    // Bring to front
    BringWindowToFocusFront(focus_front_window);
    if (((window->Flags | display_front_window->Flags) & ImGuiWindowFlags_NoBringToFrontOnFocus) == 0)
        BringWindowToDisplayFront(display_front_window);
}

void ImGui::FocusTopMostWindowUnderOne(ImGuiWindow* under_this_window, ImGuiWindow* ignore_window)
{