function void
modal_init(u32 mode_cap, Thread_Context* tctx){
  Assert(mode_cap > 0);
  modal_modes_cap = mode_cap;
  modal_modes = base_array(tctx->allocator, Modal_Mode, mode_cap);
  
  modal_map_id_global = vars_save_string_lit("keys_global");
  modal_map_id_file   = vars_save_string_lit("keys_file");
  modal_map_id_code   = vars_save_string_lit("keys_code");
  
  for (u32 i = 0; i < modal_modes_cap; i++){
    Modal_Mode* mode = modal_modes + i;
    mapping_init(tctx, &mode->map);
    setup_essential_mapping(&mode->map, modal_map_id_global, modal_map_id_file, modal_map_id_code);
  }  
}

function Modal_Mode*
modal_get_mode(u32 mode_id)
{
  if (mode_id >= modal_modes_cap) return 0;
  return modal_modes + mode_id;
}

function void
modal_bind(Mapping* mode, Command_Map* map, custom_cmd* proc, u32 key_code, u32 mod_key_code0, u32 mod_key_code1)
{
  map_set_binding_l(mode, map, BindFWrap_(proc), InputEventKind_KeyStroke, key_code, mod_key_code0, mod_key_code1, 0);
}

function void
modal_bind(u32 mode_id, String_ID map_id, custom_cmd* proc, u32 key_code, u32 mod_key_code0, u32 mod_key_code1)
{
  Assert(mode_id < modal_modes_cap);
  
  Modal_Mode* mode = modal_get_mode(mode_id);
  Mapping* m = &mode->map;
  Command_Map* map = mapping_get_or_make_map(m, map_id);
  
  modal_bind(m, map, proc, key_code, mod_key_code0, mod_key_code1);
}

function void
modal_bind_all(String_ID map_id, custom_cmd* proc, u32 key_code, u32 mod_key_code0, u32 mod_key_code1)
{
  for (u32 i = 0; i < modal_modes_cap; i++)
  {
    Mapping* m = &modal_modes[i].map;
    Command_Map* map = mapping_get_or_make_map(m, map_id);
    modal_bind(m, map, proc, key_code, mod_key_code0, mod_key_code1);
  }
}

function Modal_Mode*
modal_get_mode_curr()
{
  return modal_get_mode(modal_curr_mode);
}

function void
modal_set_mode(u32 mode_id)
{
  modal_last_mode = modal_curr_mode;
  modal_curr_mode = mode_id;
}

function u32
modal_get_next_mode(u32 base)
{
  u32 result = (base + 1) % modal_modes_cap;
  return result;
}

function void
modal_set_cursor_color(u32 mode_id, FColor color)
{
  Modal_Mode* mode = modal_get_mode(mode_id);
  mode->cursor_color = color;
}

function void
modal_set_cursor_color_u32(u32 mode_id, u32 color)
{
  FColor fc = {};
  fc.argb = color;
  modal_set_cursor_color(mode_id, fc);
}

CUSTOM_COMMAND_SIG(modal_set_mode_toggle)
{
  u32 next_mode = modal_last_mode;
  if (next_mode == modal_curr_mode)
  {
    next_mode = modal_get_next_mode(next_mode);
  }
  modal_set_mode(next_mode);
}

CUSTOM_COMMAND_SIG(modal_set_mode_next)
{
  u32 next_mode = modal_get_next_mode(modal_curr_mode);
  modal_set_mode(next_mode);
}