do_pager.c

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#include "config.h"
#include <stddef.h>
#include <assert.h>
#include <stdbool.h>
#include "mutt/lib.h"
#include "config/lib.h"
#include "core/lib.h"
#include "gui/lib.h"
#include "lib.h"
#include "index/lib.h"
#include "protos.h"
 
struct Email;
 
static int dopager_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, "status_on_top"))
    return 0;
 
  struct MuttWindow *dlg = nc->global_data;
  window_status_on_top(dlg, NeoMutt->sub);
  mutt_debug(LL_DEBUG5, "config done, request WA_REFLOW\n");
  return 0;
}
 
static int dopager_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 *dlg = nc->global_data;
  struct EventWindow *ev_w = nc->event_data;
  if (ev_w->win != dlg)
    return 0;
 
  notify_observer_remove(NeoMutt->sub->notify, dopager_config_observer, dlg);
  notify_observer_remove(dlg->notify, dopager_window_observer, dlg);
  mutt_debug(LL_DEBUG5, "window delete done\n");
 
  return 0;
}
 
int mutt_do_pager(struct PagerView *pview, struct Email *e)
{
  assert(pview);
  assert(pview->pdata);
  assert(pview->pdata->fname);
  assert((pview->mode == PAGER_MODE_ATTACH) ||
         (pview->mode == PAGER_MODE_HELP) || (pview->mode == PAGER_MODE_OTHER));
 
  struct MuttWindow *dlg = mutt_window_new(WT_DLG_PAGER, MUTT_WIN_ORIENT_VERTICAL,
                                           MUTT_WIN_SIZE_MAXIMISE, MUTT_WIN_SIZE_UNLIMITED,
                                           MUTT_WIN_SIZE_UNLIMITED);
 
  struct IndexSharedData *shared = index_shared_data_new();
  shared->email = e;
 
  notify_set_parent(shared->notify, dlg->notify);
 
  dlg->wdata = shared;
  dlg->wdata_free = index_shared_data_free;
 
  const bool c_status_on_top = cs_subset_bool(NeoMutt->sub, "status_on_top");
  struct MuttWindow *panel_pager = ppanel_new(c_status_on_top, shared);
  dlg->focus = panel_pager;
  mutt_window_add_child(dlg, panel_pager);
 
  notify_observer_add(NeoMutt->sub->notify, NT_CONFIG, dopager_config_observer, dlg);
  notify_observer_add(dlg->notify, NT_WINDOW, dopager_window_observer, dlg);
  dialog_push(dlg);
 
  pview->win_index = NULL;
  pview->win_pbar = window_find_child(panel_pager, WT_STATUS_BAR);
  pview->win_pager = window_find_child(panel_pager, WT_CUSTOM);
 
  int rc;
 
  const char *const c_pager = pager_get_pager(NeoMutt->sub);
  if (c_pager)
  {
    struct Buffer *cmd = buf_pool_get();
 
    mutt_endwin();
    buf_file_expand_fmt_quote(cmd, c_pager, pview->pdata->fname);
    if (mutt_system(buf_string(cmd)) == -1)
    {
      mutt_error(_("Error running \"%s\""), buf_string(cmd));
      rc = -1;
    }
    else
    {
      rc = 0;
    }
    mutt_file_unlink(pview->pdata->fname);
    buf_pool_release(&cmd);
  }
  else
  {
    rc = dlg_pager(pview);
  }
 
  dialog_pop();
  mutt_window_free(&dlg);
  return rc;
}