Bool saphir_task_is_windowed(CTask* task)
{
    if (!task || task == ac.task) {
        return FALSE;
    }
    if ((task->display_flags & 1 << DISPLAYf_SHOW) && ((task->display_flags & 1 << DISPLAYf_NOT_RAW)))
        return TRUE;
    return FALSE;
}

U0 saphir_split_row()
{
    CTask* task1 = sys_focus_task;
    CTask* task2 = User;
    MemCpy(&task2->win_left, &task1->win_left, 32);
    task1->win_bottom = (task1->win_top + task1->win_bottom) / 2;
    task2->win_top = task1->win_bottom + 2;
    WinZBufUpdate;
}

U0 saphir_split_col()
{
    CTask* task1 = sys_focus_task;
    CTask* task2 = User;
    MemCpy(&task2->win_left, &task1->win_left, 32);
    task1->win_right = (task1->win_left + task1->win_right) / 2;
    task2->win_left = task1->win_right + 2;
    WinZBufUpdate;
}

U0 saphir_win_select(I64 dir)
{
    CTask* task = sys_focus_task;
    CTask* task1;
    I64 wt = task->win_top;
    I64 wl = task->win_left;
    I64 i;
    I64 j;

    switch (dir) {
    case SC_CURSOR_UP:
        i = wt - 1;
        j = -1;
        break;
    case SC_CURSOR_DOWN:
        i = wt + 1;
        j = 1;
        break;
    case SC_CURSOR_LEFT:
        i = wl - 1;
        j = -1;
        break;
    case SC_CURSOR_RIGHT:
        i = wl + 1;
        j = 1;
        break;
    }

    switch (dir) {
    case SC_CURSOR_UP:
    case SC_CURSOR_DOWN:
        for (i = i; i > 0 && i < TEXT_ROWS + 1; i += j) {
            task1 = adam_task->next_task;
            while (task1 != adam_task) {
                if (saphir_task_is_windowed(task1)) {
                    if (task1->win_top == i && task1->win_left == wl) {
                        WinFocus(task1);
                        return;
                    }
                }
                task1 = task1->next_task;
            }
        }
        break;
    case SC_CURSOR_LEFT:
    case SC_CURSOR_RIGHT:
        for (i = i; i > 0 && i < TEXT_COLS + 1; i += j) {
            task1 = adam_task->next_task;
            while (task1 != adam_task) {
                if (saphir_task_is_windowed(task1)) {
                    if (task1->win_left == i) {
                        WinFocus(task1);
                        return;
                    }
                }
                task1 = task1->next_task;
            }
        }
        break;
    default:
        break;
    }
}