dlg_pattern.c

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#include "config.h"
#include <stdbool.h>
#include <stddef.h>
#include "private.h"
#include "mutt/lib.h"
#include "config/lib.h"
#include "core/lib.h"
#include "gui/lib.h"
#include "lib.h"
#include "expando/lib.h"
#include "key/lib.h"
#include "menu/lib.h"
#include "expando.h"
#include "functions.h"
#include "mutt_logging.h"
#include "pattern_data.h"

static const struct Mapping PatternHelp[] = {
  // clang-format off
  { N_("Exit"),   OP_EXIT },
  { N_("Select"), OP_GENERIC_SELECT_ENTRY },
  { N_("Help"),   OP_HELP },
  { NULL, 0 },
  // clang-format on
};

static int pattern_make_entry(struct Menu *menu, int line, int max_cols, struct Buffer *buf)
{
  struct PatternData *pd = menu->mdata;
 
  struct PatternEntry *entry = ARRAY_GET(&pd->entries, line);
 
  const bool c_arrow_cursor = cs_subset_bool(menu->sub, "arrow_cursor");
  if (c_arrow_cursor)
  {
    const char *const c_arrow_string = cs_subset_string(menu->sub, "arrow_string");
    if (max_cols > 0)
      max_cols -= (mutt_strwidth(c_arrow_string) + 1);
  }
 
  const struct Expando *c_pattern_format = cs_subset_expando(NeoMutt->sub, "pattern_format");
  return expando_filter(c_pattern_format, PatternRenderCallbacks, entry,
                        MUTT_FORMAT_ARROWCURSOR, max_cols, NeoMutt->env, buf);
}

static void create_pattern_entries(struct PatternEntryArray *pea)
{
  int num_entries = 0;
  while (Flags[num_entries].tag != 0)
    num_entries++;
 
  /* Add three more hard-coded entries for thread patterns */
  ARRAY_RESERVE(pea, num_entries + 3);
 
  struct Buffer *buf = buf_pool_get();
 
  struct PatternEntry entry = { 0 };
  for (int i = 0; Flags[i].tag != '\0'; i++)
  {
    entry.num = i + 1;
 
    buf_printf(buf, "%c%c", Flags[i].prefix, Flags[i].tag);
    entry.tag = buf_strdup(buf);
 
    switch (Flags[i].eat_arg)
    {
      case EAT_DATE:
        /* L10N:
           Pattern Completion Menu argument type: a date range
           Used by ~d, ~r.
        */
        buf_add_printf(buf, " %s", _("DATERANGE"));
        break;
      case EAT_GROUP:
        /* L10N:
           Pattern Completion Menu argument type: an address group
           Used by %c, %C, %e, %f, %L.
        */
        buf_add_printf(buf, " %s", _("GROUP"));
        break;
      case EAT_MESSAGE_RANGE:
        /* L10N:
           Pattern Completion Menu argument type: a message range.
           Used by ~m.
        */
        buf_add_printf(buf, " %s", _("MSGRANGE"));
        break;
      case EAT_QUERY:
        /* L10N:
           Pattern Completion Menu argument type: a query
           Used by ~I.
        */
        buf_add_printf(buf, " %s", _("QUERY"));
        break;
      case EAT_RANGE:
        /* L10N:
           Pattern Completion Menu argument type: a numeric range.
           Used by ~n, ~X, ~z.
        */
        buf_add_printf(buf, " %s", _("RANGE"));
        break;
      case EAT_REGEX:
        /* L10N:
           Pattern Completion Menu argument type: a regular expression
        */
        buf_add_printf(buf, " %s", _("REGEX"));
        break;
      case EAT_STRING:
        /* L10N:
           Pattern Completion Menu argument type: a string (for IMAP patterns)
           Used by =b, =B, =h, =/.
        */
        buf_add_printf(buf, " %s", _("STRING"));
        break;
      default:
        break;
    }
 
    entry.expr = buf_strdup(buf);
    entry.desc = mutt_str_dup(_(Flags[i].desc));
 
    ARRAY_ADD(pea, entry);
  }
 
  /* Add struct MuttThread patterns manually.
   * Note we allocated 3 extra slots for these above. */
 
  /* L10N:
     Pattern Completion Menu argument type: a nested pattern.
     Used by ~(), ~<(), ~>().
  */
  const char *patternstr = _("PATTERN");
 
  entry.num = ARRAY_SIZE(pea) + 1;
  entry.tag = mutt_str_dup("~()");
  buf_printf(buf, "~(%s)", patternstr);
  entry.expr = buf_strdup(buf);
  // L10N: Pattern Completion Menu description for ~()
  entry.desc = mutt_str_dup(_("messages in threads containing messages matching PATTERN"));
  ARRAY_ADD(pea, entry);
 
  entry.num = ARRAY_SIZE(pea) + 1;
  entry.tag = mutt_str_dup("~<()");
  buf_printf(buf, "~<(%s)", patternstr);
  entry.expr = buf_strdup(buf);
  // L10N: Pattern Completion Menu description for ~<()
  entry.desc = mutt_str_dup(_("messages whose immediate parent matches PATTERN"));
  ARRAY_ADD(pea, entry);
 
  entry.num = ARRAY_SIZE(pea) + 1;
  entry.tag = mutt_str_dup("~>()");
  buf_printf(buf, "~>(%s)", patternstr);
  entry.expr = buf_strdup(buf);
  // L10N: Pattern Completion Menu description for ~>()
  entry.desc = mutt_str_dup(_("messages having an immediate child matching PATTERN"));
  ARRAY_ADD(pea, entry);
 
  buf_pool_release(&buf);
}

static int pattern_config_observer(struct NotifyCallback *nc)
{
  if (nc->event_type != NT_CONFIG)
    return 0;
  if (!nc->global_data || !nc->event_data)
    return -1;
 
  struct EventConfig *ev_c = nc->event_data;
 
  if (!mutt_str_equal(ev_c->name, "pattern_format"))
    return 0;
 
  struct Menu *menu = nc->global_data;
  menu_queue_redraw(menu, MENU_REDRAW_FULL);
  mutt_debug(LL_DEBUG5, "config done, request WA_RECALC, MENU_REDRAW_FULL\n");
 
  return 0;
}

static int pattern_window_observer(struct NotifyCallback *nc)
{
  if (nc->event_type != NT_WINDOW)
    return 0;
  if (!nc->global_data || !nc->event_data)
    return -1;
  if (nc->event_subtype != NT_WINDOW_DELETE)
    return 0;
 
  struct MuttWindow *win_menu = nc->global_data;
  struct EventWindow *ev_w = nc->event_data;
  if (ev_w->win != win_menu)
    return 0;
 
  struct Menu *menu = win_menu->wdata;
 
  notify_observer_remove(NeoMutt->sub->notify, pattern_config_observer, menu);
  notify_observer_remove(win_menu->notify, pattern_window_observer, win_menu);
 
  mutt_debug(LL_DEBUG5, "window delete done\n");
  return 0;
}

bool dlg_pattern(struct Buffer *buf)
{
  struct PatternData *pd = pattern_data_new();
 
  struct SimpleDialogWindows sdw = simple_dialog_new(MdDialog, WT_DLG_PATTERN, PatternHelp);
  create_pattern_entries(&pd->entries);
 
  struct Menu *menu = sdw.menu;
  pd->menu = menu;
  pd->buf = buf;
 
  menu->mdata = pd;
  menu->mdata_free = pattern_data_free;
  menu->make_entry = pattern_make_entry;
  menu->max = ARRAY_SIZE(&pd->entries);
 
  // L10N: Pattern completion menu title
  sbar_set_title(sdw.sbar, _("Patterns"));
 
  // NT_COLOR is handled by the SimpleDialog
  notify_observer_add(NeoMutt->sub->notify, NT_CONFIG, pattern_config_observer, menu);
  notify_observer_add(menu->win->notify, NT_WINDOW, pattern_window_observer, menu->win);
 
  struct MuttWindow *old_focus = window_set_focus(menu->win);
  // ---------------------------------------------------------------------------
  // Event Loop
  int op = OP_NULL;
  struct KeyEvent event = { 0, OP_NULL };
  do
  {
    menu_tagging_dispatcher(menu->win, &event);
    window_redraw(NULL);
 
    event = km_dokey(MdDialog, GETCH_NO_FLAGS);
    op = event.op;
    mutt_debug(LL_DEBUG1, "Got op %s (%d)\n", opcodes_get_name(op), op);
    if (op < 0)
      continue;
    if (op == OP_NULL)
    {
      km_error_key(MdGeneric);
      continue;
    }
    mutt_clear_error();
 
    int rc = pattern_function_dispatcher(sdw.dlg, &event);
    if (rc == FR_UNKNOWN)
      rc = menu_function_dispatcher(menu->win, &event);
    if (rc == FR_UNKNOWN)
      rc = global_function_dispatcher(menu->win, &event);
  } while (!pd->done);
  // ---------------------------------------------------------------------------
 
  bool rc = pd->selection;
 
  window_set_focus(old_focus);
  simple_dialog_free(&sdw.dlg);
 
  return rc;
}