functions_sidebar.c

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#include "config.h"
#include <stdbool.h>
#include <string.h>
#include "private.h"
#include "mutt/lib.h"
#include "config/lib.h"
#include "core/lib.h"
#include "gui/lib.h"
#include "functions_sidebar.h"
#include "lib.h"
#include "editor/lib.h"
#include "history/lib.h"
#include "index/lib.h"
#include "key/lib.h"
#include "menu/lib.h"
#include "functions_fuzzy.h"
#include "module_data.h"
 
// clang-format off
static const struct MenuFuncOp OpSidebar[] = { /* map: sidebar */
  { "sidebar-first",                       OP_SIDEBAR_FIRST },
  { "sidebar-last",                        OP_SIDEBAR_LAST },
  { "sidebar-next",                        OP_SIDEBAR_NEXT },
  { "sidebar-next-new",                    OP_SIDEBAR_NEXT_NEW },
  { "sidebar-open",                        OP_SIDEBAR_OPEN },
  { "sidebar-page-down",                   OP_SIDEBAR_PAGE_DOWN },
  { "sidebar-page-up",                     OP_SIDEBAR_PAGE_UP },
  { "sidebar-prev",                        OP_SIDEBAR_PREV },
  { "sidebar-prev-new",                    OP_SIDEBAR_PREV_NEW },
  { "sidebar-scroll-half-down",            OP_SIDEBAR_SCROLL_HALF_DOWN },
  { "sidebar-scroll-half-up",              OP_SIDEBAR_SCROLL_HALF_UP },
  { "sidebar-scroll-line-down",            OP_SIDEBAR_SCROLL_LINE_DOWN },
  { "sidebar-scroll-line-up",              OP_SIDEBAR_SCROLL_LINE_UP },
  { "sidebar-scroll-selection-to-bottom",  OP_SIDEBAR_SCROLL_SELECTION_TO_BOTTOM },
  { "sidebar-scroll-selection-to-middle",  OP_SIDEBAR_SCROLL_SELECTION_TO_MIDDLE },
  { "sidebar-scroll-selection-to-top",     OP_SIDEBAR_SCROLL_SELECTION_TO_TOP },
  { "sidebar-select-entry-by-number",      OP_SIDEBAR_SELECT_ENTRY_BY_NUMBER },
  { "sidebar-select-page-bottom",          OP_SIDEBAR_SELECT_PAGE_BOTTOM },
  { "sidebar-select-page-middle",          OP_SIDEBAR_SELECT_PAGE_MIDDLE },
  { "sidebar-select-page-top",             OP_SIDEBAR_SELECT_PAGE_TOP },
  { "sidebar-start-search",                OP_SIDEBAR_START_SEARCH },
  { "sidebar-toggle-virtual",              OP_SIDEBAR_TOGGLE_VIRTUAL },
  { "sidebar-toggle-visible",              OP_SIDEBAR_TOGGLE_VISIBLE },
  { NULL, 0 },
};

const struct MenuOpSeq SidebarDefaultBindings[] = { /* map: sidebar */
  { 0, NULL },
};
// clang-format on

void sidebar_init_keys(struct NeoMutt *n, struct SubMenu *sm_generic)
{
  struct SidebarModuleData *mod_data = neomutt_get_module_data(n, MODULE_ID_SIDEBAR);
  ASSERT(mod_data);
 
  struct MenuDefinition *md = NULL;
  struct SubMenu *sm = NULL;
  struct SubMenu *sm_editor = editor_get_submenu();
  ASSERT(sm_editor);
 
  sm = km_register_submenu(OpSidebar);
  md = km_register_menu(MENU_SIDEBAR, "sidebar");
  km_menu_add_submenu(md, sm);
  km_menu_add_submenu(md, sm_editor);
  km_menu_add_bindings(md, SidebarDefaultBindings);
 
  mod_data->md_sidebar = md;
  mod_data->sm_sidebar = sm;
}

struct SubMenu *sidebar_get_submenu(void)
{
  struct SidebarModuleData *mod_data = neomutt_get_module_data(NeoMutt, MODULE_ID_SIDEBAR);
  ASSERT(mod_data);
 
  return mod_data->sm_sidebar;
}

bool sb_next(struct SidebarWindowData *wdata)
{
  struct SbEntry **sbep = NULL;
  ARRAY_FOREACH_FROM(sbep, &wdata->entries, wdata->hil_index + 1)
  {
    if (!(*sbep)->is_hidden)
    {
      wdata->hil_index = ARRAY_FOREACH_IDX_sbep;
      return true;
    }
  }
 
  return false;
}

static bool sb_next_n(struct SidebarWindowData *wdata, int count)
{
  int orig = wdata->hil_index;
  for (int i = 0; i < count; i++)
  {
    if (!sb_next(wdata))
      break;
  }
  return (wdata->hil_index != orig);
}

static bool sb_prev_n(struct SidebarWindowData *wdata, int count)
{
  int orig = wdata->hil_index;
  for (int i = 0; i < count; i++)
  {
    if (!sb_prev(wdata))
      break;
  }
  return (wdata->hil_index != orig);
}

static struct SbEntry **sb_next_new(struct SidebarWindowData *wdata, size_t begin, size_t end)
{
  struct SbEntry **sbep = NULL;
  ARRAY_FOREACH_FROM_TO(sbep, &wdata->entries, begin, end)
  {
    if ((*sbep)->mailbox->has_new || ((*sbep)->mailbox->msg_unread != 0))
      return sbep;
  }
  return NULL;
}

bool sb_prev(struct SidebarWindowData *wdata)
{
  struct SbEntry **sbep = NULL, **prev = NULL;
  ARRAY_FOREACH_TO(sbep, &wdata->entries, wdata->hil_index)
  {
    if (!(*sbep)->is_hidden)
      prev = sbep;
  }
 
  if (prev)
  {
    wdata->hil_index = ARRAY_IDX(&wdata->entries, prev);
    return true;
  }
 
  return false;
}

static struct SbEntry **sb_prev_new(struct SidebarWindowData *wdata, size_t begin, size_t end)
{
  struct SbEntry **sbep = NULL, **prev = NULL;
  ARRAY_FOREACH_FROM_TO(sbep, &wdata->entries, begin, end)
  {
    if ((*sbep)->mailbox->has_new || ((*sbep)->mailbox->msg_unread != 0))
      prev = sbep;
  }
 
  return prev;
}

static int sb_screen_row_index(struct SidebarWindowData *wdata, int wanted_row)
{
  if ((wdata->top_index < 0) || (wanted_row < 0))
    return -1;
 
  const int page_size = wdata->win->state.rows;
  int row = 0;
  int last = -1;
 
  struct SbEntry **sbep = NULL;
  ARRAY_FOREACH_FROM(sbep, &wdata->entries, wdata->top_index)
  {
    if (row >= page_size)
      break;
    if ((*sbep)->is_hidden)
      continue;
 
    last = ARRAY_FOREACH_IDX_sbep;
    if (row == wanted_row)
      return last;
    row++;
  }
 
  return last; // clamp to the last visible entry on the page
}

static int sb_index_visible_before(struct SidebarWindowData *wdata, int index, int count)
{
  int top = index;
  for (int i = 0; i < count; i++)
  {
    int prev = -1;
    struct SbEntry **sbep = NULL;
    ARRAY_FOREACH_TO(sbep, &wdata->entries, top)
    {
      if (!(*sbep)->is_hidden)
        prev = ARRAY_FOREACH_IDX_sbep;
    }
 
    if (prev < 0)
      break;
    top = prev;
  }
 
  return top;
}

static int sb_index_visible_after(struct SidebarWindowData *wdata, int index, int count)
{
  int pos = index;
  for (int i = 0; i < count; i++)
  {
    int next = -1;
    struct SbEntry **sbep = NULL;
    ARRAY_FOREACH_FROM(sbep, &wdata->entries, pos + 1)
    {
      if (!(*sbep)->is_hidden)
      {
        next = ARRAY_FOREACH_IDX_sbep;
        break;
      }
    }
 
    if (next < 0)
      break;
    pos = next;
  }
 
  return pos;
}

static int sb_last_visible(struct SidebarWindowData *wdata)
{
  int last = -1;
  struct SbEntry **sbep = NULL;
  ARRAY_FOREACH(sbep, &wdata->entries)
  {
    if (!(*sbep)->is_hidden)
      last = ARRAY_FOREACH_IDX_sbep;
  }
 
  return last;
}

static int sb_scroll_view(struct SidebarFunctionData *fdata, int delta)
{
  struct SidebarWindowData *wdata = fdata->wdata;
  if (!mutt_window_is_visible(wdata->win))
    return FR_NO_ACTION;
 
  if (ARRAY_EMPTY(&wdata->entries) || (wdata->hil_index < 0) || (wdata->top_index < 0))
    return FR_NO_ACTION;
 
  const int page_size = wdata->win->state.rows;
 
  int new_top;
  if (delta < 0)
    new_top = sb_index_visible_before(wdata, wdata->top_index, -delta);
  else
    new_top = sb_index_visible_after(wdata, wdata->top_index, delta);
 
  /* Tie the last entry to the bottom of the screen (don't scroll into space) */
  const int last = sb_last_visible(wdata);
  if (last >= 0)
  {
    const int max_top = sb_index_visible_before(wdata, last, page_size - 1);
    if (new_top > max_top)
      new_top = max_top;
  }
 
  if (new_top == wdata->top_index)
    return FR_NO_ACTION;
 
  wdata->top_index = new_top;
 
  /* Drag the selection into the visible range */
  const int first = sb_screen_row_index(wdata, 0);
  const int bottom = sb_screen_row_index(wdata, page_size - 1);
  if ((first >= 0) && (wdata->hil_index < first))
    wdata->hil_index = first;
  else if ((bottom >= 0) && (wdata->hil_index > bottom))
    wdata->hil_index = bottom;
 
  wdata->win->actions |= WA_RECALC;
  return FR_SUCCESS;
}
 
// -----------------------------------------------------------------------------

int op_sidebar_first(struct SidebarFunctionData *fdata, const struct KeyEvent *event)
{
  struct SidebarWindowData *wdata = fdata->wdata;
  if (!mutt_window_is_visible(wdata->win))
    return FR_NO_ACTION;
 
  if (ARRAY_EMPTY(&wdata->entries) || (wdata->hil_index < 0))
    return FR_NO_ACTION;
 
  int orig_hil_index = wdata->hil_index;
 
  wdata->hil_index = 0;
  if ((*ARRAY_GET(&wdata->entries, wdata->hil_index))->is_hidden)
    if (!sb_next(wdata))
      wdata->hil_index = orig_hil_index;
 
  if (orig_hil_index == wdata->hil_index)
    return FR_NO_ACTION;
 
  wdata->win->actions |= WA_RECALC;
  return FR_SUCCESS;
}

static int op_sidebar_select_entry_by_number(struct SidebarFunctionData *fdata,
                                             const struct KeyEvent *event)
{
  struct SidebarWindowData *wdata = fdata->wdata;
  if (!mutt_window_is_visible(wdata->win))
    return FR_NO_ACTION;
 
  if (ARRAY_EMPTY(&wdata->entries) || (wdata->hil_index < 0))
  {
    mutt_error(_("There are no mailboxes"));
    return FR_ERROR;
  }
 
  const int count = ARRAY_SIZE(&wdata->entries);
  struct Buffer *buf = buf_pool_get();
  int rc = FR_ERROR;
 
  int num = event->count;
  if (num == 0)
  {
    if ((mw_get_field(_("Jump to: "), buf, MUTT_COMP_NONE, HC_OTHER, NULL, NULL) != 0) ||
        buf_is_empty(buf))
    {
      rc = FR_NO_ACTION;
      goto done;
    }
 
    if (!mutt_str_atoi_full(buf_string(buf), &num))
    {
      mutt_error(_("Invalid index number"));
      goto done;
    }
  }
 
  if ((num < 1) || (num > count))
  {
    mutt_error(_("Invalid index number"));
    goto done;
  }
 
  if ((num - 1) == wdata->hil_index)
  {
    rc = FR_NO_ACTION;
    goto done;
  }
 
  wdata->hil_index = num - 1; // entry numbers are 1-based
  wdata->win->actions |= WA_RECALC;
  rc = op_sidebar_open(fdata, event);
 
done:
  buf_pool_release(&buf);
  return rc;
}

int op_sidebar_last(struct SidebarFunctionData *fdata, const struct KeyEvent *event)
{
  struct SidebarWindowData *wdata = fdata->wdata;
  if (!mutt_window_is_visible(wdata->win))
    return FR_NO_ACTION;
 
  if (ARRAY_EMPTY(&wdata->entries) || (wdata->hil_index < 0))
    return FR_NO_ACTION;
 
  int orig_hil_index = wdata->hil_index;
 
  wdata->hil_index = ARRAY_SIZE(&wdata->entries);
  if (!sb_prev(wdata))
    wdata->hil_index = orig_hil_index;
 
  if (orig_hil_index == wdata->hil_index)
    return FR_NO_ACTION;
 
  wdata->win->actions |= WA_RECALC;
  return FR_SUCCESS;
}

int op_sidebar_next(struct SidebarFunctionData *fdata, const struct KeyEvent *event)
{
  struct SidebarWindowData *wdata = fdata->wdata;
  if (!mutt_window_is_visible(wdata->win))
    return FR_NO_ACTION;
 
  if (ARRAY_EMPTY(&wdata->entries) || (wdata->hil_index < 0))
    return FR_NO_ACTION;
 
  const int count = event->count;
  if (count > 0)
  {
    if (!sb_next_n(wdata, count))
      return FR_NO_ACTION;
  }
  else
  {
    if (!sb_next(wdata))
    {
      mutt_message(_("You are on the last entry"));
      return FR_ERROR;
    }
  }
 
  wdata->win->actions |= WA_RECALC;
  return FR_SUCCESS;
}

static int op_sidebar_next_new(struct SidebarFunctionData *fdata, const struct KeyEvent *event)
{
  struct SidebarWindowData *wdata = fdata->wdata;
  if (!mutt_window_is_visible(wdata->win))
    return FR_NO_ACTION;
 
  const size_t max_entries = ARRAY_SIZE(&wdata->entries);
  if ((max_entries == 0) || (wdata->hil_index < 0))
    return FR_NO_ACTION;
 
  const int count = MAX(event->count, 1);
  const bool c_sidebar_next_new_wrap = cs_subset_bool(fdata->n->sub, "sidebar_next_new_wrap");
  int orig_hil_index = wdata->hil_index;
 
  for (int i = 0; i < count; i++)
  {
    struct SbEntry **sbep = NULL;
    if ((sbep = sb_next_new(wdata, wdata->hil_index + 1, max_entries)) ||
        (c_sidebar_next_new_wrap && (sbep = sb_next_new(wdata, 0, wdata->hil_index))))
    {
      wdata->hil_index = ARRAY_IDX(&wdata->entries, sbep);
    }
    else
    {
      break;
    }
  }
 
  if (wdata->hil_index == orig_hil_index)
    return FR_NO_ACTION;
 
  wdata->win->actions |= WA_RECALC;
  return FR_SUCCESS;
}

int op_sidebar_open(struct SidebarFunctionData *fdata, const struct KeyEvent *event)
{
  struct SidebarWindowData *wdata = fdata->wdata;
  struct MuttWindow *win_sidebar = wdata->win;
  if (!mutt_window_is_visible(win_sidebar))
    return FR_NO_ACTION;
 
  struct MuttWindow *dlg = dialog_find(win_sidebar);
  index_change_folder(dlg, sb_get_highlight(win_sidebar));
  return FR_SUCCESS;
}

int op_sidebar_prev(struct SidebarFunctionData *fdata, const struct KeyEvent *event)
{
  struct SidebarWindowData *wdata = fdata->wdata;
  if (!mutt_window_is_visible(wdata->win))
    return FR_NO_ACTION;
 
  if (ARRAY_EMPTY(&wdata->entries) || (wdata->hil_index < 0))
    return FR_NO_ACTION;
 
  const int count = event->count;
  if (count > 0)
  {
    if (!sb_prev_n(wdata, count))
      return FR_NO_ACTION;
  }
  else
  {
    if (!sb_prev(wdata))
    {
      mutt_message(_("You are on the first entry"));
      return FR_ERROR;
    }
  }
 
  wdata->win->actions |= WA_RECALC;
  return FR_SUCCESS;
}

static int op_sidebar_prev_new(struct SidebarFunctionData *fdata, const struct KeyEvent *event)
{
  struct SidebarWindowData *wdata = fdata->wdata;
  if (!mutt_window_is_visible(wdata->win))
    return FR_NO_ACTION;
 
  const size_t max_entries = ARRAY_SIZE(&wdata->entries);
  if ((max_entries == 0) || (wdata->hil_index < 0))
    return FR_NO_ACTION;
 
  const int count = MAX(event->count, 1);
  const bool c_sidebar_next_new_wrap = cs_subset_bool(fdata->n->sub, "sidebar_next_new_wrap");
  int orig_hil_index = wdata->hil_index;
 
  for (int i = 0; i < count; i++)
  {
    struct SbEntry **sbep = NULL;
    if ((sbep = sb_prev_new(wdata, 0, wdata->hil_index)) ||
        (c_sidebar_next_new_wrap &&
         (sbep = sb_prev_new(wdata, wdata->hil_index + 1, max_entries))))
    {
      wdata->hil_index = ARRAY_IDX(&wdata->entries, sbep);
    }
    else
    {
      break;
    }
  }
 
  if (wdata->hil_index == orig_hil_index)
    return FR_NO_ACTION;
 
  wdata->win->actions |= WA_RECALC;
  return FR_SUCCESS;
}

static int op_sidebar_select_page_top(struct SidebarFunctionData *fdata,
                                      const struct KeyEvent *event)
{
  struct SidebarWindowData *wdata = fdata->wdata;
  if (!mutt_window_is_visible(wdata->win))
    return FR_NO_ACTION;
 
  if (ARRAY_EMPTY(&wdata->entries) || (wdata->hil_index < 0) || (wdata->top_index < 0))
    return FR_NO_ACTION;
 
  const int index = sb_screen_row_index(wdata, 0);
  if ((index < 0) || (index == wdata->hil_index))
    return FR_NO_ACTION;
 
  wdata->hil_index = index;
  wdata->win->actions |= WA_RECALC;
  return FR_SUCCESS;
}

static int op_sidebar_select_page_middle(struct SidebarFunctionData *fdata,
                                         const struct KeyEvent *event)
{
  struct SidebarWindowData *wdata = fdata->wdata;
  if (!mutt_window_is_visible(wdata->win))
    return FR_NO_ACTION;
 
  if (ARRAY_EMPTY(&wdata->entries) || (wdata->hil_index < 0) || (wdata->top_index < 0))
    return FR_NO_ACTION;
 
  const int index = sb_screen_row_index(wdata, wdata->win->state.rows / 2);
  if ((index < 0) || (index == wdata->hil_index))
    return FR_NO_ACTION;
 
  wdata->hil_index = index;
  wdata->win->actions |= WA_RECALC;
  return FR_SUCCESS;
}

static int op_sidebar_select_page_bottom(struct SidebarFunctionData *fdata,
                                         const struct KeyEvent *event)
{
  struct SidebarWindowData *wdata = fdata->wdata;
  if (!mutt_window_is_visible(wdata->win))
    return FR_NO_ACTION;
 
  if (ARRAY_EMPTY(&wdata->entries) || (wdata->hil_index < 0) || (wdata->top_index < 0))
    return FR_NO_ACTION;
 
  const int index = sb_screen_row_index(wdata, wdata->win->state.rows - 1);
  if ((index < 0) || (index == wdata->hil_index))
    return FR_NO_ACTION;
 
  wdata->hil_index = index;
  wdata->win->actions |= WA_RECALC;
  return FR_SUCCESS;
}

static int op_sidebar_scroll_half_down(struct SidebarFunctionData *fdata,
                                       const struct KeyEvent *event)
{
  const int half_page = MAX(fdata->wdata->win->state.rows / 2, 1);
  return sb_scroll_view(fdata, MAX(event->count, 1) * half_page);
}

static int op_sidebar_scroll_half_up(struct SidebarFunctionData *fdata,
                                     const struct KeyEvent *event)
{
  const int half_page = MAX(fdata->wdata->win->state.rows / 2, 1);
  return sb_scroll_view(fdata, 0 - MAX(event->count, 1) * half_page);
}

static int op_sidebar_scroll_line_down(struct SidebarFunctionData *fdata,
                                       const struct KeyEvent *event)
{
  return sb_scroll_view(fdata, MAX(event->count, 1));
}

static int op_sidebar_scroll_line_up(struct SidebarFunctionData *fdata,
                                     const struct KeyEvent *event)
{
  return sb_scroll_view(fdata, 0 - MAX(event->count, 1));
}

int op_sidebar_scroll_page_down(struct SidebarFunctionData *fdata, const struct KeyEvent *event)
{
  const int page = MAX(fdata->wdata->win->state.rows, 1);
  return sb_scroll_view(fdata, MAX(event->count, 1) * page);
}

int op_sidebar_scroll_page_up(struct SidebarFunctionData *fdata, const struct KeyEvent *event)
{
  const int page = MAX(fdata->wdata->win->state.rows, 1);
  return sb_scroll_view(fdata, 0 - MAX(event->count, 1) * page);
}

static int sb_scroll_selection_to_row(struct SidebarFunctionData *fdata, int wanted_row)
{
  struct SidebarWindowData *wdata = fdata->wdata;
  if (!mutt_window_is_visible(wdata->win))
    return FR_NO_ACTION;
 
  if (ARRAY_EMPTY(&wdata->entries) || (wdata->hil_index < 0))
    return FR_NO_ACTION;
 
  const int new_top = sb_index_visible_before(wdata, wdata->hil_index, wanted_row);
  if (new_top == wdata->top_index)
    return FR_NO_ACTION;
 
  wdata->top_index = new_top;
  wdata->win->actions |= WA_RECALC;
  return FR_SUCCESS;
}

static int op_sidebar_scroll_selection_to_top(struct SidebarFunctionData *fdata,
                                              const struct KeyEvent *event)
{
  return sb_scroll_selection_to_row(fdata, 0);
}

static int op_sidebar_scroll_selection_to_middle(struct SidebarFunctionData *fdata,
                                                 const struct KeyEvent *event)
{
  return sb_scroll_selection_to_row(fdata, fdata->wdata->win->state.rows / 2);
}

static int op_sidebar_scroll_selection_to_bottom(struct SidebarFunctionData *fdata,
                                                 const struct KeyEvent *event)
{
  return sb_scroll_selection_to_row(fdata, fdata->wdata->win->state.rows - 1);
}

static int op_sidebar_toggle_visible(struct SidebarFunctionData *fdata,
                                     const struct KeyEvent *event)
{
  bool_str_toggle(fdata->n->sub, "sidebar_visible", NULL);
  mutt_window_reflow(NULL);
  return FR_SUCCESS;
}

static int op_sidebar_toggle_virtual(struct SidebarFunctionData *fdata,
                                     const struct KeyEvent *event)
{
  return FR_SUCCESS;
}
 
// -----------------------------------------------------------------------------

static const struct SidebarFunction SidebarFunctions[] = {
  // clang-format off
  { OP_SIDEBAR_FIRST,                        op_sidebar_first },
  { OP_SIDEBAR_LAST,                         op_sidebar_last },
  { OP_SIDEBAR_NEXT,                         op_sidebar_next },
  { OP_SIDEBAR_NEXT_NEW,                     op_sidebar_next_new },
  { OP_SIDEBAR_OPEN,                         op_sidebar_open },
  { OP_SIDEBAR_PAGE_DOWN,                    op_sidebar_scroll_page_down },
  { OP_SIDEBAR_PAGE_UP,                      op_sidebar_scroll_page_up },
  { OP_SIDEBAR_PREV,                         op_sidebar_prev },
  { OP_SIDEBAR_PREV_NEW,                     op_sidebar_prev_new },
  { OP_SIDEBAR_SCROLL_HALF_DOWN,             op_sidebar_scroll_half_down },
  { OP_SIDEBAR_SCROLL_HALF_UP,               op_sidebar_scroll_half_up },
  { OP_SIDEBAR_SCROLL_LINE_DOWN,             op_sidebar_scroll_line_down },
  { OP_SIDEBAR_SCROLL_LINE_UP,               op_sidebar_scroll_line_up },
  { OP_SIDEBAR_SCROLL_SELECTION_TO_BOTTOM,   op_sidebar_scroll_selection_to_bottom },
  { OP_SIDEBAR_SCROLL_SELECTION_TO_MIDDLE,   op_sidebar_scroll_selection_to_middle },
  { OP_SIDEBAR_SCROLL_SELECTION_TO_TOP,      op_sidebar_scroll_selection_to_top },
  { OP_SIDEBAR_SELECT_ENTRY_BY_NUMBER,       op_sidebar_select_entry_by_number },
  { OP_SIDEBAR_SELECT_PAGE_BOTTOM,           op_sidebar_select_page_bottom },
  { OP_SIDEBAR_SELECT_PAGE_MIDDLE,           op_sidebar_select_page_middle },
  { OP_SIDEBAR_SELECT_PAGE_TOP,              op_sidebar_select_page_top },
  { OP_SIDEBAR_START_SEARCH,                 op_sidebar_start_search },
  { OP_SIDEBAR_TOGGLE_VIRTUAL,               op_sidebar_toggle_virtual },
  { OP_SIDEBAR_TOGGLE_VISIBLE,               op_sidebar_toggle_visible },
  { 0, NULL },
  // clang-format on
};

int sb_function_dispatcher(struct MuttWindow *win, const struct KeyEvent *event)
{
  if (!event || !win || !win->wdata)
    return FR_UNKNOWN;
 
  const int op = event->op;
 
  struct SidebarModuleData *mod_data = neomutt_get_module_data(NeoMutt, MODULE_ID_SIDEBAR);
 
  struct SidebarFunctionData fdata = {
    .n = NeoMutt,
    .mod_data = mod_data,
    .wdata = win->wdata,
  };
 
  int rc = FR_UNKNOWN;
  for (size_t i = 0; SidebarFunctions[i].op != OP_NULL; i++)
  {
    const struct SidebarFunction *fn = &SidebarFunctions[i];
    if (fn->op == op)
    {
      rc = fn->function(&fdata, event);
      break;
    }
  }
 
  if (rc == FR_UNKNOWN) // Not our function
    return rc;
 
  const char *result = dispatcher_get_retval_name(rc);
  mutt_debug(LL_DEBUG1, "Handled %s (%d) -> %s\n", opcodes_get_name(op), op, NONULL(result));
 
  dispatcher_flush_on_error(rc);
  return rc;
}