client/gui-gtk-2.0/plrdlg.c

/**********************************************************************
 Freeciv - Copyright (C) 1996 - A Kjeldberg, L Gregersen, P Unold
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
***********************************************************************/

#ifdef HAVE_CONFIG_H
#include <fc_config.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>

/* utility */
#include "astring.h"
#include "fcintl.h"
#include "support.h"

/* common */
#include "diptreaty.h"
#include "packets.h"
#include "nation.h"
#include "player.h"

/* client */
#include "chatline.h"
#include "client_main.h"
#include "climisc.h"
#include "connectdlg_common.h"
#include "dialogs.h"
#include "gui_main.h"
#include "gui_stuff.h"
#include "inteldlg.h"
#include "spaceshipdlg.h"
#include "tilespec.h"
#include "colors.h"
#include "graphics.h"
#include "options.h"
#include "text.h"

#include "plrdlg.h"

struct gui_dialog *players_dialog_shell;
static GtkWidget *players_list;
static GtkTreeSelection *players_selection;
static GtkWidget *players_int_command;
static GtkWidget *players_meet_command;
static GtkWidget *players_war_command;
static GtkWidget *players_vision_command;
static GtkWidget *players_sship_command;

static GtkListStore *players_dialog_store;
#define PLR_DLG_COL_STYLE       (0 + num_player_dlg_columns)
#define PLR_DLG_COL_WEIGHT      (1 + num_player_dlg_columns)
#define PLR_DLG_COL_ID          (2 + num_player_dlg_columns)

static void create_players_dialog(void);
static void players_meet_callback(GtkMenuItem *item, gpointer data);
static void players_war_callback(GtkMenuItem *item, gpointer data);
static void players_vision_callback(GtkMenuItem *item, gpointer data);
static void players_intel_callback(GtkMenuItem *item, gpointer data);
static void players_sship_callback(GtkMenuItem *item, gpointer data);
static void players_ai_toggle_callback(GtkMenuItem *item, gpointer data);
static void players_ai_skill_callback(GtkMenuItem *item, gpointer data);


static void update_views(void);

/**************************************************************************
popup the dialog 10% inside the main-window, and optionally raise it.
**************************************************************************/
void popup_players_dialog(bool raise)
{
  if (!players_dialog_shell){
    create_players_dialog();
  }
  gui_dialog_present(players_dialog_shell);
  if (raise) {
    gui_dialog_raise(players_dialog_shell);
  }
}

/****************************************************************
 Closes the players dialog.
*****************************************************************/
void popdown_players_dialog(void)
{
  if (players_dialog_shell) {
    gui_dialog_destroy(players_dialog_shell);
  }
}

/***************************************************************************
  Create a small colored square representing the player color, for use
  in player lists.
  May return NULL if the player has no color yet.
***************************************************************************/
GdkPixbuf *create_player_icon(const struct player *plr)
{
  int width, height;
  GdkPixbuf *tmp;
  GdkPixmap *pixmap;

  if (!player_has_color(tileset, plr)) {
    return NULL;
  }

  gtk_icon_size_lookup(GTK_ICON_SIZE_MENU, &width, &height);

  pixmap = gdk_pixmap_new(root_window, width, height, -1);

  gdk_gc_set_foreground(civ_gc,
                        &get_color(tileset,
				   COLOR_PLAYER_COLOR_BACKGROUND)->color);
  gdk_draw_rectangle(pixmap, civ_gc, TRUE, 0, 0, width, height);

  gdk_gc_set_foreground(civ_gc, &get_player_color(tileset, plr)->color);
  gdk_draw_rectangle(pixmap, civ_gc, TRUE, 1, 1, width - 2, height - 2);

  tmp = gdk_pixbuf_get_from_drawable(NULL, pixmap, NULL,
      0, 0, 0, 0, -1, -1);

  g_object_unref(pixmap);
  return tmp;
}

/**************************************************************************
  Refresh player menu
**************************************************************************/
static void update_players_menu(void)
{
  GtkTreeModel *model;
  GtkTreeIter it;

  if (gtk_tree_selection_get_selected(players_selection, &model, &it)) {
    struct player *plr;
    gint plrno;

    gtk_tree_model_get(model, &it, PLR_DLG_COL_ID, &plrno, -1);
    plr = player_by_number(plrno);

    if (plr->spaceship.state != SSHIP_NONE) {
      gtk_widget_set_sensitive(players_sship_command, TRUE);
    } else {
      gtk_widget_set_sensitive(players_sship_command, FALSE);
    }

    if (NULL != client.conn.playing) {
      /* We keep button sensitive in case of DIPL_SENATE_BLOCKING, so that player
       * can request server side to check requirements of those effects with omniscience */
      gtk_widget_set_sensitive(players_war_command,
                               can_client_issue_orders()
                               && pplayer_can_cancel_treaty(client_player(),
                                                            player_by_number(plrno))
                               != DIPL_ERROR);
    } else {
      gtk_widget_set_sensitive(players_war_command, FALSE);
    }

    gtk_widget_set_sensitive(players_vision_command,
			     can_client_issue_orders()
			     && gives_shared_vision(client.conn.playing, plr)
                             && !players_on_same_team(client.conn.playing, plr));

    gtk_widget_set_sensitive(players_meet_command, can_meet_with_player(plr));
    gtk_widget_set_sensitive(players_int_command, can_intel_with_player(plr));
    return;
  }

  gtk_widget_set_sensitive(players_meet_command, FALSE);
  gtk_widget_set_sensitive(players_int_command, FALSE);
}

/**************************************************************************
  Something selected from player menu
**************************************************************************/
static void selection_callback(GtkTreeSelection *selection, gpointer data)
{
  update_players_menu();
}

/**************************************************************************
  Button pressed on player list
**************************************************************************/
static gboolean button_press_callback(GtkTreeView *view, GdkEventButton *ev)
{
  if (ev->type == GDK_2BUTTON_PRESS) {
    GtkTreePath *path;

    gtk_tree_view_get_cursor(view, &path, NULL);
    if (path) {
      GtkTreeModel *model = gtk_tree_view_get_model(view);
      GtkTreeIter it;
      gint id;
      struct player *plr;

      gtk_tree_model_get_iter(model, &it, path);
      gtk_tree_path_free(path);

      gtk_tree_model_get(model, &it, PLR_DLG_COL_ID, &id, -1);
      plr = player_by_number(id);

      if (ev->button == 1) {
        if (can_intel_with_player(plr)) {
          popup_intel_dialog(plr);
        }
      } else if (can_meet_with_player(plr)) {
        dsend_packet_diplomacy_init_meeting_req(&client.conn, id);
      }
    }
  }
  return FALSE;
}

/**************************************************************************
  Sorting function for plr dlg.
**************************************************************************/
static gint plrdlg_sort_func(GtkTreeModel *model,
			      GtkTreeIter *a, GtkTreeIter *b, gpointer data)
{
  GValue value = { 0, };
  struct player *player1;
  struct player *player2;
  gint n;

  n = GPOINTER_TO_INT(data);

  gtk_tree_model_get_value(model, a, PLR_DLG_COL_ID, &value);
  player1 = player_by_number(g_value_get_int(&value));
  g_value_unset(&value);

  gtk_tree_model_get_value(model, b, PLR_DLG_COL_ID, &value);
  player2 = player_by_number(g_value_get_int(&value));
  g_value_unset(&value);

  return player_dlg_columns[n].sort_func(player1, player2);
}

/****************************************************************************
  Create a player dialog store.
****************************************************************************/
static GtkListStore *players_dialog_store_new(void)
{
  GtkListStore *store;
  GType model_types[num_player_dlg_columns + 3];
  int i;

  for (i = 0; i < num_player_dlg_columns; i++) {
    switch (player_dlg_columns[i].type) {
    case COL_FLAG:
      model_types[i] = GDK_TYPE_PIXBUF;
      break;
    case COL_COLOR:
      model_types[i] = GDK_TYPE_PIXBUF;
      break;
    case COL_BOOLEAN:
      model_types[i] = G_TYPE_BOOLEAN;
      break;
    case COL_TEXT:
    case COL_RIGHT_TEXT:
      model_types[i] = G_TYPE_STRING;
      break;
    }
  }
  /* special (invisible rows) - Text style, weight and player id */
  model_types[i++] = G_TYPE_INT;        /* PLR_DLG_COL_STYLE. */
  model_types[i++] = G_TYPE_INT;        /* PLR_DLG_COL_WEIGHT. */
  model_types[i++] = G_TYPE_INT;        /* PLR_DLG_COL_ID. */

  store = gtk_list_store_newv(i, model_types);

  /* Set sort order */
  for (i = 0; i < num_player_dlg_columns; i++) {
    if (player_dlg_columns[i].sort_func != NULL) {
        gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(store), i,
                                        plrdlg_sort_func, GINT_TO_POINTER(i),
                                        NULL);
    }
  }

  return store;
}

/**************************************************************************
  Toggled column visibility
**************************************************************************/
static void toggle_view(GtkCheckMenuItem* item, gpointer data)
{
  struct player_dlg_column* pcol = data;

  pcol->show = gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(item));
  update_views();
}

/*************************************************************************
  Called whenever player toggles the 'Show/Dead Players' menu item
*************************************************************************/
static void toggle_dead_players(GtkCheckMenuItem* item, gpointer data)
{
  gui_options.player_dlg_show_dead_players =
    gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(item));
  real_players_dialog_update(NULL);
}

/**************************************************************************
  Create and return the "diplomacy" menu for the player report. This menu
  contains diplomacy actions the current player can use on other nations.
**************************************************************************/
static GtkWidget *create_diplomacy_menu(void)
{
  GtkWidget *menu, *item;

  menu = gtk_menu_new();

  item = gtk_menu_item_new_with_mnemonic(_("_Meet"));
  g_signal_connect(item, "activate",
                   G_CALLBACK(players_meet_callback), NULL);
  gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
  players_meet_command = item;

  item = gtk_menu_item_new_with_mnemonic(_("Cancel _Treaty"));
  g_signal_connect(item, "activate",
                   G_CALLBACK(players_war_callback), NULL);
  gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
  players_war_command = item;

  item = gtk_menu_item_new_with_mnemonic(_("_Withdraw Vision"));
  g_signal_connect(item, "activate",
                   G_CALLBACK(players_vision_callback), NULL);
  gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
  players_vision_command = item;

  return menu;
}

/**************************************************************************
  Create and return the "intelligence" menu. The items in this menu are
  used by the player to see more detailed information about other nations.
**************************************************************************/
static GtkWidget *create_intelligence_menu(void)
{
  GtkWidget *menu, *item;

  menu = gtk_menu_new();

  item = gtk_menu_item_new_with_mnemonic(_("_Report"));
  g_signal_connect(item, "activate",
                   G_CALLBACK(players_intel_callback), NULL);
  gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
  players_int_command = item;

  item = gtk_menu_item_new_with_mnemonic(_("_Spaceship"));
  g_signal_connect(item, "activate",
                   G_CALLBACK(players_sship_callback), NULL);
  gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
  players_sship_command = item;

  return menu;
}

/**************************************************************************
  Create 'show' menu for player dialog
**************************************************************************/
static GtkWidget* create_show_menu(void)
{
  int i;
  GtkWidget *menu = gtk_menu_new();
  GtkWidget *item;

  /* index starting at one (1) here to force playername to always be shown */
  for (i = 1; i < num_player_dlg_columns; i++) {
    struct player_dlg_column *pcol;

    pcol = &player_dlg_columns[i];
    item = gtk_check_menu_item_new_with_label(pcol->title);
    gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(item), pcol->show);
    gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
    g_signal_connect(item, "toggled", G_CALLBACK(toggle_view), pcol);
  }

  item = gtk_separator_menu_item_new();
  gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);

  item = gtk_check_menu_item_new_with_label(Q_("?show:Dead Players"));
  gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(item),
                                 gui_options.player_dlg_show_dead_players);
  gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
  g_signal_connect(item, "toggled", G_CALLBACK(toggle_dead_players), NULL);

  return menu;
}

/**************************************************************************
  Create all of player dialog
**************************************************************************/
void create_players_dialog(void)
{
  int i;
  GtkWidget *sep, *sw;
  GtkWidget *menubar, *menu, *item, *vbox;
  enum ai_level level;

  gui_dialog_new(&players_dialog_shell, GTK_NOTEBOOK(top_notebook), NULL,
                 TRUE);
  /* TRANS: Nations report title */
  gui_dialog_set_title(players_dialog_shell, _("Nations"));

  gui_dialog_add_button(players_dialog_shell,
      GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE);

  gui_dialog_set_default_size(players_dialog_shell, -1, 270);

  players_dialog_store = players_dialog_store_new();

  players_list = gtk_tree_view_new_with_model(GTK_TREE_MODEL
                                              (players_dialog_store));
  g_object_unref(players_dialog_store);
  gtk_widget_set_name(players_list, "small_font");

  players_selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(players_list));
  g_signal_connect(players_selection, "changed",
      G_CALLBACK(selection_callback), NULL);
  g_signal_connect(players_list, "button_press_event",
      G_CALLBACK(button_press_callback), NULL);

  for (i = 0; i < num_player_dlg_columns; i++) {
    struct player_dlg_column *pcol;
    GtkCellRenderer *renderer;
    GtkTreeViewColumn *col;

    pcol = &player_dlg_columns[i];
    col = NULL;

    switch (pcol->type) {
    case COL_FLAG:
      renderer = gtk_cell_renderer_pixbuf_new();

      col = gtk_tree_view_column_new_with_attributes(pcol->title,
         renderer, "pixbuf", i, NULL);
      break;
    case COL_BOOLEAN:
      renderer = gtk_cell_renderer_toggle_new();

      col = gtk_tree_view_column_new_with_attributes(pcol->title, renderer,
        "active", i, NULL);
      break;
    case COL_COLOR:
      renderer = gtk_cell_renderer_pixbuf_new();

      col = gtk_tree_view_column_new_with_attributes(pcol->title, renderer,
             "pixbuf", i, NULL);
      break;
    case COL_TEXT:
      renderer = gtk_cell_renderer_text_new();
      g_object_set(renderer, "style-set", TRUE, "weight-set", TRUE, NULL);

      col = gtk_tree_view_column_new_with_attributes(pcol->title, renderer,
	  "text", i,
	  "style", PLR_DLG_COL_STYLE,
	  "weight", PLR_DLG_COL_WEIGHT,
	  NULL);
      gtk_tree_view_column_set_sort_column_id(col, i);
      break;
    case COL_RIGHT_TEXT:
      renderer = gtk_cell_renderer_text_new();
      g_object_set(renderer, "style-set", TRUE, "weight-set", TRUE, NULL);

      col = gtk_tree_view_column_new_with_attributes(pcol->title, renderer,
	  "text", i,
	  "style", PLR_DLG_COL_STYLE,
	  "weight", PLR_DLG_COL_WEIGHT,
	  NULL);
      gtk_tree_view_column_set_sort_column_id(col, i);
      g_object_set(renderer, "xalign", 1.0, NULL);
      gtk_tree_view_column_set_alignment(col, 1.0);
      break;
    }

    if (col) {
      gtk_tree_view_append_column(GTK_TREE_VIEW(players_list), col);
    }
  }

  gtk_tree_view_set_search_column(GTK_TREE_VIEW(players_list),
                                  player_dlg_default_sort_column());

  sw = gtk_scrolled_window_new(NULL, NULL);
  gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(sw),
				      GTK_SHADOW_ETCHED_IN);
  gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw),
		                 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
  gtk_container_add(GTK_CONTAINER(sw), players_list);

  gtk_box_pack_start(GTK_BOX(players_dialog_shell->vbox), sw,
		     TRUE, TRUE, 0);

  vbox = gtk_vbox_new(FALSE, 0);

  sep = gtk_hseparator_new();
  gtk_box_pack_start(GTK_BOX(vbox), sep, FALSE, FALSE, 0);

  menubar = gtk_aux_menu_bar_new();
  gtk_box_pack_start(GTK_BOX(vbox), menubar, TRUE, TRUE, 0);


  gui_dialog_add_widget(players_dialog_shell, vbox);
  gtk_box_set_child_packing(GTK_BOX(players_dialog_shell->action_area),
                            vbox, FALSE, FALSE, 0, GTK_PACK_START);

  item = gtk_menu_item_new_with_mnemonic(_("Di_plomacy"));
  menu = create_diplomacy_menu();
  gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), menu);
  gtk_menu_shell_append(GTK_MENU_SHELL(menubar), item);

  item = gtk_menu_item_new_with_mnemonic(_("_Intelligence"));
  menu = create_intelligence_menu();
  gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), menu);
  gtk_menu_shell_append(GTK_MENU_SHELL(menubar), item);

  item = gtk_menu_item_new_with_mnemonic(_("_Display"));
  menu = create_show_menu();
  gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), menu);
  gtk_menu_shell_append(GTK_MENU_SHELL(menubar), item);

  item = gtk_menu_item_new_with_mnemonic(_("_AI"));
  gtk_menu_shell_append(GTK_MENU_SHELL(menubar), item);

  menu = gtk_menu_new();
  gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), menu);

  item = gtk_menu_item_new_with_mnemonic(_("_Toggle AI Mode"));
  g_signal_connect(item, "activate",
      G_CALLBACK(players_ai_toggle_callback), NULL);
  gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);

  sep = gtk_separator_menu_item_new();
  gtk_menu_shell_append(GTK_MENU_SHELL(menu), sep);

  for (level = 0; level < AI_LEVEL_COUNT; level++) {
    if (is_settable_ai_level(level)) {
      const char *level_name = ai_level_translated_name(level);

      item = gtk_menu_item_new_with_label(level_name);
      g_signal_connect(item, "activate",
                       G_CALLBACK(players_ai_skill_callback),
                       GUINT_TO_POINTER(level));
      gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
    }
  }
  gtk_widget_show_all(menu);

  gui_dialog_show_all(players_dialog_shell);

  real_players_dialog_update(NULL);

  gui_dialog_set_default_response(players_dialog_shell,
    GTK_RESPONSE_CLOSE);

  gtk_tree_view_focus(GTK_TREE_VIEW(players_list));
}


/**************************************************************************
...
**************************************************************************/
#define MIN_DIMENSION 5

/**************************************************************************
 Builds the flag pixmap. May return NULL if there is not enough memory.
 You must call g_object_unref on the returned pixbuf when it is no
 longer needed.
**************************************************************************/
GdkPixbuf *get_flag(const struct nation_type *nation)
{
  int x0, y0, x1, y1, w, h;
  GdkPixbuf *im;
  struct sprite *flag;

  flag = get_nation_flag_sprite(tileset, nation);

  /* calculate the bounding box ... */
  sprite_get_bounding_box(flag, &x0, &y0, &x1, &y1);

  fc_assert_ret_val(x0 != -1, NULL);
  fc_assert_ret_val(y0 != -1, NULL);
  fc_assert_ret_val(x1 != -1, NULL);
  fc_assert_ret_val(y1 != -1, NULL);

  w = (x1 - x0) + 1;
  h = (y1 - y0) + 1;

  /* if the flag is smaller then 5 x 5, something is wrong */
  fc_assert_ret_val(w >= MIN_DIMENSION && h >= MIN_DIMENSION, NULL);

  /* croping */
  im = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, w, h);
  if (im != NULL) {
    gdk_pixbuf_copy_area(sprite_get_pixbuf(flag), x0, y0, w, h,
                         im, 0, 0);
  }

  /* and finaly store the scaled flag pixbuf in the static flags array */
  return im;
}


/**************************************************************************
  Fills the player list with the information for 'pplayer' at the row
  given by 'it'.
**************************************************************************/
static void fill_row(GtkListStore *store, GtkTreeIter *it,
                     const struct player *pplayer)
{
  struct player_dlg_column* pcol;
  GdkPixbuf *pixbuf;
  int style = PANGO_STYLE_NORMAL, weight = PANGO_WEIGHT_NORMAL;
  int k;

  for (k = 0; k < num_player_dlg_columns; k++) {
    pcol = &player_dlg_columns[k];
    switch (pcol->type) {
    case COL_TEXT:
    case COL_RIGHT_TEXT:
      gtk_list_store_set(store, it, k, pcol->func(pplayer), -1);
      break;
    case COL_FLAG:
      pixbuf = get_flag(nation_of_player(pplayer));
      if (pixbuf != NULL) {
        gtk_list_store_set(store, it, k, pixbuf, -1);
        g_object_unref(pixbuf);
      }
      break;
    case COL_COLOR:
      pixbuf = create_player_icon(pplayer);
      if (pixbuf != NULL) {
        gtk_list_store_set(store, it, k, pixbuf, -1);
        g_object_unref(pixbuf);
      }
      break;
    case COL_BOOLEAN:
      gtk_list_store_set(store, it, k, pcol->bool_func(pplayer), -1);
      break;
    }
  }

   /* now add some eye candy ... */
  if (client_has_player()) {
    switch (player_diplstate_get(client_player(), pplayer)->type) {
    case DS_WAR:
      weight = PANGO_WEIGHT_NORMAL;
      style = PANGO_STYLE_ITALIC;
      break;
    case DS_ALLIANCE:
    case DS_TEAM:
      weight = PANGO_WEIGHT_BOLD;
      style = PANGO_STYLE_NORMAL;
      break;
    case DS_ARMISTICE:
    case DS_CEASEFIRE:
    case DS_PEACE:
    case DS_NO_CONTACT:
      weight = PANGO_WEIGHT_NORMAL;
      style = PANGO_STYLE_NORMAL;
      break;
    case DS_LAST:
      break;
    }
  }

  gtk_list_store_set(store, it,
                     PLR_DLG_COL_STYLE, style,
                     PLR_DLG_COL_WEIGHT, weight,
                     PLR_DLG_COL_ID, player_number(pplayer),
                     -1);
}

/**************************************************************************
  Return TRUE if the player should be shown in the player list.
**************************************************************************/
static bool player_should_be_shown(const struct player *pplayer)
{
  return NULL != pplayer && (gui_options.player_dlg_show_dead_players
                             || pplayer->is_alive)
         && (!is_barbarian(pplayer));
}

/**************************************************************************
  Clear and refill the entire player list.
**************************************************************************/
void real_players_dialog_update(void *unused)
{
  GtkTreeModel *model;
  GtkTreeIter iter;
  int selected;

  if (NULL == players_dialog_shell) {
    return;
  }

  /* Save the selection. */
  if (gtk_tree_selection_get_selected(players_selection, &model, &iter)) {
    gtk_tree_model_get(model, &iter, PLR_DLG_COL_ID, &selected, -1);
  } else {
    selected = -1;
  }

  gtk_list_store_clear(players_dialog_store);
  players_iterate(pplayer) {
    if (!player_should_be_shown(pplayer)) {
      continue;
    }
    gtk_list_store_append(players_dialog_store, &iter);
    fill_row(players_dialog_store, &iter, pplayer);
    if (player_number(pplayer) == selected) {
      /* Restore the selection. */
      gtk_tree_selection_select_iter(players_selection, &iter);
    }
  } players_iterate_end;

  update_views();
}

/**************************************************************************
  Callback for diplomatic meetings button. This button is enabled iff
  we can meet with the other player.
**************************************************************************/
void players_meet_callback(GtkMenuItem *item, gpointer data)
{
  GtkTreeModel *model;
  GtkTreeIter it;

  if (gtk_tree_selection_get_selected(players_selection, &model, &it)) {
    gint plrno;

    gtk_tree_model_get(model, &it, PLR_DLG_COL_ID, &plrno, -1);

    dsend_packet_diplomacy_init_meeting_req(&client.conn, plrno);
  }
}

/**************************************************************************
  Confirm pact/treaty cancellation.
  Frees strings passed in.
**************************************************************************/
static void confirm_cancel_pact(enum clause_type clause, int plrno,
                                char *title, char *question)
{
  GtkWidget *shell;

  shell = gtk_message_dialog_new(NULL, 0,
                                 GTK_MESSAGE_QUESTION, GTK_BUTTONS_YES_NO,
                                 "%s", question);
  gtk_window_set_title(GTK_WINDOW(shell), title);
  setup_dialog(shell, toplevel);
  gtk_dialog_set_default_response(GTK_DIALOG(shell), GTK_RESPONSE_NO);

  if (gtk_dialog_run(GTK_DIALOG(shell)) == GTK_RESPONSE_YES) {
    dsend_packet_diplomacy_cancel_pact(&client.conn, plrno, clause);
  }
  gtk_widget_destroy(shell);
  FC_FREE(title);
  FC_FREE(question);
}

/**************************************************************************
  Pact cancellation requested
**************************************************************************/
void players_war_callback(GtkMenuItem *item, gpointer data)
{
  GtkTreeModel *model;
  GtkTreeIter it;

  if (gtk_tree_selection_get_selected(players_selection, &model, &it)) {
    struct astring title = ASTRING_INIT, question = ASTRING_INIT;
    gint plrno;
    struct player *aplayer;
    enum diplstate_type oldstate, newstate;

    gtk_tree_model_get(model, &it, PLR_DLG_COL_ID, &plrno, -1);
    aplayer = player_by_number(plrno);
    fc_assert_ret(aplayer != NULL);

    oldstate = player_diplstate_get(client_player(), aplayer)->type;
    newstate = cancel_pact_result(oldstate);

    /* TRANS: %s is a diplomatic state: "Cancel Cease-fire" */
    astr_set(&title, _("Cancel %s"), diplstate_type_translated_name(oldstate));

    if (newstate == DS_WAR) {
      astr_set(&question, _("Really declare war on the %s?"),
               nation_plural_for_player(aplayer));
    } else {
      /* TRANS: "Cancel Belgian Alliance? ... will be Armistice." */
      astr_set(&question, _("Cancel %s %s? New diplomatic state will be %s."),
               nation_adjective_for_player(aplayer),
               diplstate_type_translated_name(oldstate),
               diplstate_type_translated_name(newstate));
    }

    /* can be any pact clause */
    confirm_cancel_pact(CLAUSE_CEASEFIRE, plrno,
                        astr_to_str(&title), astr_to_str(&question));
  }
}

/**************************************************************************
  Withdrawing shared vision
**************************************************************************/
void players_vision_callback(GtkMenuItem *item, gpointer data)
{
  GtkTreeModel *model;
  GtkTreeIter it;

  if (gtk_tree_selection_get_selected(players_selection, &model, &it)) {
    struct astring question = ASTRING_INIT;
    gint plrno;
    struct player *aplayer;

    gtk_tree_model_get(model, &it, PLR_DLG_COL_ID, &plrno, -1);
    aplayer = player_by_number(plrno);
    fc_assert_ret(aplayer != NULL);

    /* TRANS: "...from the Belgians?" */
    astr_set(&question, _("Withdraw shared vision from the %s?"),
             nation_plural_for_player(aplayer));

    confirm_cancel_pact(CLAUSE_VISION, plrno,
                        fc_strdup(_("Withdraw Shared Vision")),
                        astr_to_str(&question));
  }
}

/**************************************************************************
  Intelligence report query
**************************************************************************/
void players_intel_callback(GtkMenuItem *item, gpointer data)
{
  GtkTreeModel *model;
  GtkTreeIter it;

  if (gtk_tree_selection_get_selected(players_selection, &model, &it)) {
    gint plrno;

    gtk_tree_model_get(model, &it, PLR_DLG_COL_ID, &plrno, -1);

    if (can_intel_with_player(player_by_number(plrno))) {
      popup_intel_dialog(player_by_number(plrno));
    }
  }
}

/**************************************************************************
  Spaceship query callback
**************************************************************************/
void players_sship_callback(GtkMenuItem *item, gpointer data)
{
  GtkTreeModel *model;
  GtkTreeIter it;

  if (gtk_tree_selection_get_selected(players_selection, &model, &it)) {
    gint plrno;

    gtk_tree_model_get(model, &it, PLR_DLG_COL_ID, &plrno, -1);
    popup_spaceship_dialog(player_by_number(plrno));
  }
}

/**************************************************************************
  AI toggle callback.
**************************************************************************/
static void players_ai_toggle_callback(GtkMenuItem *item, gpointer data)
{
  GtkTreeModel *model;
  GtkTreeIter it;

  if (gtk_tree_selection_get_selected(players_selection, &model, &it)) {
    gint plrno;

    gtk_tree_model_get(model, &it, PLR_DLG_COL_ID, &plrno, -1);

    send_chat_printf("/aitoggle \"%s\"", player_name(player_by_number(plrno)));
  }
}

/**************************************************************************
  AI skill level setting callback.
**************************************************************************/
static void players_ai_skill_callback(GtkMenuItem *item, gpointer data)
{
  GtkTreeModel *model;
  GtkTreeIter it;

  if (gtk_tree_selection_get_selected(players_selection, &model, &it)) {
    gint plrno;

    gtk_tree_model_get(model, &it, PLR_DLG_COL_ID, &plrno, -1);

    send_chat_printf("/%s %s",
                     ai_level_cmd(GPOINTER_TO_UINT(data)),
                     player_name(player_by_number(plrno)));
  }
}

/**************************************************************************
  Refresh players dialog views.
**************************************************************************/
static void update_views(void)
{
  int i;

  for (i = 0; i < num_player_dlg_columns; i++) {
    GtkTreeViewColumn *col;

    col = gtk_tree_view_get_column(GTK_TREE_VIEW(players_list), i);
    gtk_tree_view_column_set_visible(col, player_dlg_columns[i].show);
  }
}