dlg_history.c

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#include "config.h"
#include <stdbool.h>
#include <stdio.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"

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

static int history_make_entry(struct Menu *menu, int line, int max_cols, struct Buffer *buf)
{
  struct HistoryData *hd = menu->mdata;
 
  const char **pentry = ARRAY_GET(hd->matches, line);
  if (!pentry)
    return 0;
 
  struct HistoryEntry h = { line, *pentry };
 
  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_history_format = cs_subset_expando(NeoMutt->sub, "history_format");
  return expando_filter(c_history_format, HistoryRenderCallbacks, &h,
                        MUTT_FORMAT_ARROWCURSOR, max_cols, NeoMutt->env, buf);
}

static int history_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, "history_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;
}

void dlg_history(struct Buffer *buf, struct StringArray *matches)
{
  const struct MenuDefinition *md_generic = generic_get_menu_definition();
  struct SimpleDialogWindows sdw = simple_dialog_new(md_generic, WT_DLG_HISTORY, HistoryHelp);
  struct Menu *menu = sdw.menu;
 
  struct HistoryData hd = { false, false, buf, menu, matches };
 
  char title[256] = { 0 };
  snprintf(title, sizeof(title), _("History '%s'"), buf_string(buf));
  sbar_set_title(sdw.sbar, title);
 
  menu->make_entry = history_make_entry;
  menu->max = ARRAY_SIZE(matches);
  menu->mdata = &hd;
  menu->mdata_free = NULL; // Menu doesn't own the data
 
  // NT_COLOR is handled by the SimpleDialog
  notify_observer_add(NeoMutt->sub->notify, NT_CONFIG, history_config_observer, menu);
 
  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(md_generic, GETCH_NONE);
    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(md_generic);
      continue;
    }
    mutt_clear_error();
 
    int rc = history_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 (!hd.done);
  // ---------------------------------------------------------------------------
 
  window_set_focus(old_focus);
  notify_observer_remove(NeoMutt->sub->notify, history_config_observer, menu);
  simple_dialog_free(&sdw.dlg);
}