/*
 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
 *
 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
 * Copyright (C) 2008, Hein Ragas <viking@ragas.nl>
 * Copyright (C) 2010, Rob Norris <rw_norris@hotmail.com>
 *
 * 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 of the License, 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "viking.h"
#include "thumbnails.h"
#include "garminsymbols.h"
#include "degrees_converters.h"
#include "authors.h"
#include "documenters.h"
#include "vikgoto.h"
#include "util.h"

#include <glib/gi18n.h>

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

void a_dialog_msg ( GtkWindow *parent, gint type, const gchar *info, const gchar *extra )
{
  GtkWidget *msgbox = gtk_message_dialog_new ( parent, GTK_DIALOG_DESTROY_WITH_PARENT, type, GTK_BUTTONS_OK, info, extra );
  gtk_dialog_run ( GTK_DIALOG(msgbox) );
  gtk_widget_destroy ( msgbox );
}

gboolean a_dialog_goto_latlon ( GtkWindow *parent, struct LatLon *ll, const struct LatLon *old )
{
  GtkWidget *dialog = gtk_dialog_new_with_buttons (_("Go to Lat/Lon"),
                                                  parent,
                                                  GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
                                                  GTK_STOCK_CANCEL,
                                                  GTK_RESPONSE_REJECT,
                                                  GTK_STOCK_OK,
                                                  GTK_RESPONSE_ACCEPT,
                                                  NULL);
  GtkWidget *latlabel, *lonlabel;
  GtkWidget *lat, *lon;
  gchar *tmp_lat, *tmp_lon;

  latlabel = gtk_label_new (_("Latitude:"));
  lat = gtk_entry_new ();
  tmp_lat = g_strdup_printf ( "%f", old->lat );
  gtk_entry_set_text ( GTK_ENTRY(lat), tmp_lat );
  g_free ( tmp_lat );

  lonlabel = gtk_label_new (_("Longitude:"));
  lon = gtk_entry_new ();
  tmp_lon = g_strdup_printf ( "%f", old->lon );
  gtk_entry_set_text ( GTK_ENTRY(lon), tmp_lon );
  g_free ( tmp_lon );

  gtk_widget_show ( latlabel );
  gtk_widget_show ( lonlabel );
  gtk_widget_show ( lat );
  gtk_widget_show ( lon );

  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), latlabel,  FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), lat, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), lonlabel,  FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), lon,  FALSE, FALSE, 0);

  gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );

  if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) == GTK_RESPONSE_ACCEPT )
  {
    ll->lat = convert_dms_to_dec ( gtk_entry_get_text ( GTK_ENTRY(lat) ) );
    ll->lon = convert_dms_to_dec ( gtk_entry_get_text ( GTK_ENTRY(lon) ) );
    gtk_widget_destroy ( dialog );
    return TRUE;
  }

  gtk_widget_destroy ( dialog );
  return FALSE;
}

gboolean a_dialog_goto_utm ( GtkWindow *parent, struct UTM *utm, const struct UTM *old )
{
  GtkWidget *dialog = gtk_dialog_new_with_buttons (_("Go to UTM"),
                                                  parent,
                                                  GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
                                                  GTK_STOCK_CANCEL,
                                                  GTK_RESPONSE_REJECT,
                                                  GTK_STOCK_OK,
                                                  GTK_RESPONSE_ACCEPT,
                                                  NULL);
  GtkWidget *norlabel, *easlabel, *nor, *eas;
  GtkWidget *zonehbox, *zonespin, *letterentry;
  gchar *tmp_eas, *tmp_nor;
  gchar tmp_letter[2];

  norlabel = gtk_label_new (_("Northing:"));
  nor = gtk_entry_new ();
  tmp_nor = g_strdup_printf("%ld", (long) old->northing );
  gtk_entry_set_text ( GTK_ENTRY(nor), tmp_nor );
  g_free ( tmp_nor );

  easlabel = gtk_label_new (_("Easting:"));
  eas = gtk_entry_new ();
  tmp_eas = g_strdup_printf("%ld", (long) old->easting );
  gtk_entry_set_text ( GTK_ENTRY(eas), tmp_eas );
  g_free ( tmp_eas );

  zonehbox = gtk_hbox_new ( FALSE, 0 );
  gtk_box_pack_start ( GTK_BOX(zonehbox), gtk_label_new ( _("Zone:") ), FALSE, FALSE, 5 );
  zonespin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( old->zone, 1, 60, 1, 5, 0 ), 1, 0 );
  gtk_box_pack_start ( GTK_BOX(zonehbox), zonespin, TRUE, TRUE, 5 );
  gtk_box_pack_start ( GTK_BOX(zonehbox), gtk_label_new ( _("Letter:") ), FALSE, FALSE, 5 );
  letterentry = gtk_entry_new ();
  gtk_entry_set_max_length ( GTK_ENTRY(letterentry), 1 );
  gtk_entry_set_width_chars ( GTK_ENTRY(letterentry), 2 );
  tmp_letter[0] = old->letter;
  tmp_letter[1] = '\0';
  gtk_entry_set_text ( GTK_ENTRY(letterentry), tmp_letter );
  gtk_box_pack_start ( GTK_BOX(zonehbox), letterentry, FALSE, FALSE, 5 );

  gtk_widget_show ( norlabel );
  gtk_widget_show ( easlabel );
  gtk_widget_show ( nor );
  gtk_widget_show ( eas );

  gtk_widget_show_all ( zonehbox );

  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), norlabel, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), nor, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), easlabel,  FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), eas,  FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), zonehbox,  FALSE, FALSE, 0);

  gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );

  if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) == GTK_RESPONSE_ACCEPT )
  {
    const gchar *letter;
    utm->northing = atof ( gtk_entry_get_text ( GTK_ENTRY(nor) ) );
    utm->easting = atof ( gtk_entry_get_text ( GTK_ENTRY(eas) ) );
    utm->zone = gtk_spin_button_get_value_as_int ( GTK_SPIN_BUTTON(zonespin) );
    letter = gtk_entry_get_text ( GTK_ENTRY(letterentry) );
    if (*letter)
       utm->letter = toupper(*letter);
    gtk_widget_destroy ( dialog );
    return TRUE;
  }

  gtk_widget_destroy ( dialog );
  return FALSE;
}

void a_dialog_response_accept ( GtkDialog *dialog )
{
  gtk_dialog_response ( dialog, GTK_RESPONSE_ACCEPT );
}

static void symbol_entry_changed_cb(GtkWidget *combo, GtkListStore *store)
{
  GtkTreeIter iter;
  gchar *sym;

  if (!gtk_combo_box_get_active_iter(GTK_COMBO_BOX(combo), &iter))
    return;

  gtk_tree_model_get(GTK_TREE_MODEL(store), &iter, 0, (void *)&sym, -1 );
  /* Note: symm is NULL when "(none)" is select (first cell is empty) */
  gtk_widget_set_tooltip_text(combo, sym);
  g_free(sym);
}

/* Specify if a new waypoint or not */
/* If a new waypoint then it uses the default_name for the suggested name allowing the user to change it.
    The name to use is returned
   When an existing waypoint the default name is shown but is not allowed to be changed and NULL is returned
 */
/* todo: less on this side, like add track */
gchar *a_dialog_waypoint ( GtkWindow *parent, gchar *default_name, VikWaypoint *wp, GHashTable *waypoints, VikCoordMode coord_mode, gboolean is_new, gboolean *updated )
{
  GtkWidget *dialog = gtk_dialog_new_with_buttons (_("Waypoint Properties"),
                                                   parent,
                                                   GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
                                                   GTK_STOCK_CANCEL,
                                                   GTK_RESPONSE_REJECT,
                                                   GTK_STOCK_OK,
                                                   GTK_RESPONSE_ACCEPT,
                                                   NULL);
  struct LatLon ll;
  GtkWidget *latlabel, *lonlabel, *namelabel, *latentry, *lonentry, *altentry, *altlabel, *nameentry=NULL, *commentlabel, 
    *commententry, *imagelabel, *imageentry, *symbollabel, *symbolentry;
  GtkListStore *store;

  gchar *lat, *lon, *alt;

  vik_coord_to_latlon ( &(wp->coord), &ll );

  lat = g_strdup_printf ( "%f", ll.lat );
  lon = g_strdup_printf ( "%f", ll.lon );
  vik_units_height_t height_units = a_vik_get_units_height ();
  switch (height_units) {
  case VIK_UNITS_HEIGHT_METRES:
    alt = g_strdup_printf ( "%f", wp->altitude );
    break;
  case VIK_UNITS_HEIGHT_FEET:
    alt = g_strdup_printf ( "%f", VIK_METERS_TO_FEET(wp->altitude) );
    break;
  default:
    alt = g_strdup_printf ( "%f", wp->altitude );
    g_critical("Houston, we've had a problem. height=%d", height_units);
  }

  *updated = FALSE;

  namelabel = gtk_label_new (_("Name:"));
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), namelabel, FALSE, FALSE, 0);
  if ( is_new )
  {
    // New waypoint, so name is still changeable
    nameentry = gtk_entry_new ();
    if ( default_name )
      gtk_entry_set_text( GTK_ENTRY(nameentry), default_name );
    g_signal_connect_swapped ( nameentry, "activate", G_CALLBACK(a_dialog_response_accept), GTK_DIALOG(dialog) );
  }
  else {
    // Existing waypoint - so can not change the name this way - but at least can see it
    if ( default_name )
      nameentry = gtk_label_new ( default_name );
  }
  if ( nameentry )
    gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), nameentry, FALSE, FALSE, 0);

  latlabel = gtk_label_new (_("Latitude:"));
  latentry = gtk_entry_new ();
  gtk_entry_set_text ( GTK_ENTRY(latentry), lat );
  g_free ( lat );

  lonlabel = gtk_label_new (_("Longitude:"));
  lonentry = gtk_entry_new ();
  gtk_entry_set_text ( GTK_ENTRY(lonentry), lon );
  g_free ( lon );

  altlabel = gtk_label_new (_("Altitude:"));
  altentry = gtk_entry_new ();
  gtk_entry_set_text ( GTK_ENTRY(altentry), alt );
  g_free ( alt );

  commentlabel = gtk_label_new (_("Comment:"));
  commententry = gtk_entry_new ();
  gchar *cmt =  NULL;
  cmt = a_vik_goto_get_search_string_for_this_place(VIK_WINDOW(parent));
  if (cmt)
    gtk_entry_set_text(GTK_ENTRY(commententry), cmt);

  imagelabel = gtk_label_new (_("Image:"));
  imageentry = vik_file_entry_new (GTK_FILE_CHOOSER_ACTION_OPEN);

  {
    GtkCellRenderer *r;
    symbollabel = gtk_label_new (_("Symbol:"));
    GtkTreeIter iter;

    store = gtk_list_store_new(3, G_TYPE_STRING, GDK_TYPE_PIXBUF, G_TYPE_STRING);
    symbolentry = gtk_combo_box_new_with_model(GTK_TREE_MODEL(store));
    gtk_combo_box_set_wrap_width(GTK_COMBO_BOX(symbolentry), 6);

    g_signal_connect(symbolentry, "changed", G_CALLBACK(symbol_entry_changed_cb), store);
    gtk_list_store_append (store, &iter);
    gtk_list_store_set (store, &iter, 0, NULL, 1, NULL, 2, _("(none)"), -1);
    a_populate_sym_list(store);

    r = gtk_cell_renderer_pixbuf_new ();
    gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (symbolentry), r, FALSE);
    gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (symbolentry), r, "pixbuf", 1, NULL);

    r = gtk_cell_renderer_text_new ();
    gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (symbolentry), r, FALSE);
    gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (symbolentry), r, "text", 2, NULL);

    if ( !is_new && wp->symbol ) {
      gboolean ok;
      gchar *sym;
      for (ok = gtk_tree_model_get_iter_first ( GTK_TREE_MODEL(store), &iter ); ok; ok = gtk_tree_model_iter_next ( GTK_TREE_MODEL(store), &iter)) {
	gtk_tree_model_get ( GTK_TREE_MODEL(store), &iter, 0, (void *)&sym, -1 );
	if (sym && !strcmp(sym, wp->symbol)) {
	  g_free(sym);
	  break;
	} else {
	  g_free(sym);
	}
      }
      // Ensure is it a valid symbol in the given symbol set (large vs small)
      // Not all symbols are available in both
      // The check prevents a Gtk Critical message
      if ( iter.stamp )
	gtk_combo_box_set_active_iter(GTK_COMBO_BOX(symbolentry), &iter);
    }
  }

  if ( !is_new && wp->comment )
    gtk_entry_set_text ( GTK_ENTRY(commententry), wp->comment );

  if ( !is_new && wp->image )
    vik_file_entry_set_filename ( VIK_FILE_ENTRY(imageentry), wp->image );


  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), latlabel, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), latentry, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), lonlabel, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), lonentry, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), altlabel, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), altentry, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), commentlabel, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), commententry, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), imagelabel, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), imageentry, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), symbollabel, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), GTK_WIDGET(symbolentry), FALSE, FALSE, 0);

  gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );

  gtk_widget_show_all ( GTK_DIALOG(dialog)->vbox );

  while ( gtk_dialog_run ( GTK_DIALOG(dialog) ) == GTK_RESPONSE_ACCEPT )
  {
    if ( is_new )
    {
      const gchar *entered_name = gtk_entry_get_text ( GTK_ENTRY(nameentry) );
      if ( strlen(entered_name) == 0 ) /* TODO: other checks (isalpha or whatever ) */
        a_dialog_info_msg ( parent, _("Please enter a name for the waypoint.") );
      else {

        gchar *use_name = g_strdup ( entered_name );

        if ( g_hash_table_lookup ( waypoints, use_name ) && !a_dialog_yes_or_no ( parent, _("The waypoint \"%s\" exists, do you want to overwrite it?"), use_name ) )
          g_free ( use_name );
        else
        {
          /* Do It */
          ll.lat = convert_dms_to_dec ( gtk_entry_get_text ( GTK_ENTRY(latentry) ) );
          ll.lon = convert_dms_to_dec ( gtk_entry_get_text ( GTK_ENTRY(lonentry) ) );
          vik_coord_load_from_latlon ( &(wp->coord), coord_mode, &ll );
	  // Always store in metres
	  switch (height_units) {
	  case VIK_UNITS_HEIGHT_METRES:
	    wp->altitude = atof ( gtk_entry_get_text ( GTK_ENTRY(altentry) ) );
	    break;
	  case VIK_UNITS_HEIGHT_FEET:
	    wp->altitude = VIK_FEET_TO_METERS(atof ( gtk_entry_get_text ( GTK_ENTRY(altentry) ) ));
	    break;
	  default:
	    wp->altitude = atof ( gtk_entry_get_text ( GTK_ENTRY(altentry) ) );
	    g_critical("Houston, we've had a problem. height=%d", height_units);
	  }
          vik_waypoint_set_comment ( wp, gtk_entry_get_text ( GTK_ENTRY(commententry) ) );
          vik_waypoint_set_image ( wp, vik_file_entry_get_filename ( VIK_FILE_ENTRY(imageentry) ) );
          if ( wp->image && *(wp->image) && (!a_thumbnails_exists(wp->image)) )
            a_thumbnails_create ( wp->image );

	  {
	    GtkTreeIter iter, first;
	    gtk_tree_model_get_iter_first ( GTK_TREE_MODEL(store), &first );
	    if ( !gtk_combo_box_get_active_iter ( GTK_COMBO_BOX(symbolentry), &iter ) || !memcmp(&iter, &first, sizeof(GtkTreeIter)) ) {
	      vik_waypoint_set_symbol ( wp, NULL );
	    } else {
	      gchar *sym;
	      gtk_tree_model_get ( GTK_TREE_MODEL(store), &iter, 0, (void *)&sym, -1 );
	      vik_waypoint_set_symbol ( wp, sym );
	      g_free(sym);
	    }
	  }		

          gtk_widget_destroy ( dialog );
          return use_name;
        }
      } /* else (valid name) */
    }
    else
    {
      ll.lat = convert_dms_to_dec ( gtk_entry_get_text ( GTK_ENTRY(latentry) ) );
      ll.lon = convert_dms_to_dec ( gtk_entry_get_text ( GTK_ENTRY(lonentry) ) );
      vik_coord_load_from_latlon ( &(wp->coord), coord_mode, &ll );
      switch (height_units) {
      case VIK_UNITS_HEIGHT_METRES:
	wp->altitude = atof ( gtk_entry_get_text ( GTK_ENTRY(altentry) ) );
	break;
      case VIK_UNITS_HEIGHT_FEET:
	wp->altitude = VIK_FEET_TO_METERS(atof ( gtk_entry_get_text ( GTK_ENTRY(altentry) ) ));
	break;
      default:
	wp->altitude = atof ( gtk_entry_get_text ( GTK_ENTRY(altentry) ) );
	g_critical("Houston, we've had a problem. height=%d", height_units);
      }
      if ( (! wp->comment) || strcmp ( wp->comment, gtk_entry_get_text ( GTK_ENTRY(commententry) ) ) != 0 )
        vik_waypoint_set_comment ( wp, gtk_entry_get_text ( GTK_ENTRY(commententry) ) );
      if ( (! wp->image) || strcmp ( wp->image, vik_file_entry_get_filename ( VIK_FILE_ENTRY ( imageentry ) ) ) != 0 )
      {
        vik_waypoint_set_image ( wp, vik_file_entry_get_filename ( VIK_FILE_ENTRY(imageentry) ) );
        if ( wp->image && *(wp->image) && (!a_thumbnails_exists(wp->image)) )
          a_thumbnails_create ( wp->image );
      }

      {
	GtkTreeIter iter, first;
	gtk_tree_model_get_iter_first ( GTK_TREE_MODEL(store), &first );
	if ( !gtk_combo_box_get_active_iter ( GTK_COMBO_BOX(symbolentry), &iter ) || !memcmp(&iter, &first, sizeof(GtkTreeIter)) ) {
	  vik_waypoint_set_symbol ( wp, NULL );
	} else {
	  gchar *sym;
	  gtk_tree_model_get ( GTK_TREE_MODEL(store), &iter, 0, (void *)&sym, -1 );
	  vik_waypoint_set_symbol ( wp, sym );
	  g_free(sym);
	}
      }		

      gtk_widget_destroy ( dialog );
      
      *updated = TRUE;
      return NULL;
    }
  }
  gtk_widget_destroy ( dialog );
  return NULL;
}

static void get_selected_foreach_func(GtkTreeModel *model,
                                      GtkTreePath *path,
                                      GtkTreeIter *iter,
                                      gpointer data)
{
  GList **list = data;
  gchar *name;
  gtk_tree_model_get (model, iter, 0, &name, -1);
  *list = g_list_prepend(*list, name);
}

GList *a_dialog_select_from_list ( GtkWindow *parent, GList *names, gboolean multiple_selection_allowed, const gchar *title, const gchar *msg )
{
  GtkTreeIter iter;
  GtkCellRenderer *renderer;
  GtkWidget *view;

  GtkWidget *dialog = gtk_dialog_new_with_buttons (title,
                                                  parent,
                                                  GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
                                                  GTK_STOCK_CANCEL,
                                                  GTK_RESPONSE_REJECT,
                                                  GTK_STOCK_OK,
                                                  GTK_RESPONSE_ACCEPT,
                                                  NULL);
  /* When something is selected then OK */
  gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
  GtkWidget *response_w = NULL;
#if GTK_CHECK_VERSION (2, 20, 0)
  /* Default to not apply - as initially nothing is selected! */
  response_w = gtk_dialog_get_widget_for_response ( GTK_DIALOG(dialog), GTK_RESPONSE_REJECT );
#endif
  GtkListStore *store = gtk_list_store_new(1, G_TYPE_STRING);

  GtkWidget *scrolledwindow;

  GList *runner = names;
  while (runner)
  {
    gtk_list_store_append(store, &iter);
    gtk_list_store_set(store, &iter, 0, runner->data, -1);
    runner = g_list_next(runner);
  }

  view = gtk_tree_view_new();
  renderer = gtk_cell_renderer_text_new();
  // Use the column header to display the message text,
  // this makes the overall widget allocation simple as treeview takes up all the space
  gtk_tree_view_insert_column_with_attributes( GTK_TREE_VIEW(view), -1, msg, renderer, "text", 0, NULL);
  gtk_tree_view_set_model(GTK_TREE_VIEW(view), GTK_TREE_MODEL(store));
  gtk_tree_view_set_headers_visible( GTK_TREE_VIEW(view), TRUE);
  gtk_tree_selection_set_mode( gtk_tree_view_get_selection(GTK_TREE_VIEW(view)),
      multiple_selection_allowed ? GTK_SELECTION_MULTIPLE : GTK_SELECTION_BROWSE );
  g_object_unref(store);

  scrolledwindow = gtk_scrolled_window_new ( NULL, NULL );
  gtk_scrolled_window_set_policy ( GTK_SCROLLED_WINDOW(scrolledwindow), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC );
  gtk_container_add ( GTK_CONTAINER(scrolledwindow), view );

  gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), scrolledwindow, TRUE, TRUE, 0 );
  // Ensure a reasonable number of items are shown, but let the width be automatically sized
  gtk_widget_set_size_request ( dialog, -1, 400) ;

  gtk_widget_show_all ( dialog );

  if ( response_w )
    gtk_widget_grab_focus ( response_w );

  while ( gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT )
  {
    GList *names = NULL;
    GtkTreeSelection *selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(view));
    gtk_tree_selection_selected_foreach(selection, get_selected_foreach_func, &names);
    if (names)
    {
      gtk_widget_destroy ( dialog );
      return (names);
    }
    a_dialog_error_msg(parent, _("Nothing was selected"));
  }
  gtk_widget_destroy ( dialog );
  return NULL;
}

gchar *a_dialog_new_track ( GtkWindow *parent, GHashTable *tracks, gchar *default_name )
{
  GtkWidget *dialog = gtk_dialog_new_with_buttons (_("Add Track"),
                                                  parent,
                                                  GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
                                                  GTK_STOCK_CANCEL,
                                                  GTK_RESPONSE_REJECT,
                                                  GTK_STOCK_OK,
                                                  GTK_RESPONSE_ACCEPT,
                                                  NULL);
  GtkWidget *label = gtk_label_new ( _("Track Name:") );
  GtkWidget *entry = gtk_entry_new ();

  if (default_name)
    gtk_entry_set_text ( GTK_ENTRY(entry), default_name );

  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), label, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), entry, FALSE, FALSE, 0);

  g_signal_connect_swapped ( entry, "activate", G_CALLBACK(a_dialog_response_accept), GTK_DIALOG(dialog) );

  gtk_widget_show ( label );
  gtk_widget_show ( entry );

  gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );

  while ( gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT )
  {
    const gchar *constname = gtk_entry_get_text ( GTK_ENTRY(entry) );
    if ( *constname == '\0' )
      a_dialog_info_msg ( parent, _("Please enter a name for the track.") );
    else {
      gchar *name = g_strdup ( constname );

      if ( g_hash_table_lookup( tracks, name ) && !a_dialog_yes_or_no ( parent, _("The track \"%s\" exists, do you want to overwrite it?"), gtk_entry_get_text ( GTK_ENTRY(entry) ) ) )
      {
        g_free ( name );
      }
      else
      {
        gtk_widget_destroy ( dialog );
        return name;
      }
    }
  }
  gtk_widget_destroy ( dialog );
  return NULL;
}

/* creates a vbox full of labels */
GtkWidget *a_dialog_create_label_vbox ( gchar **texts, int label_count )
{
  GtkWidget *vbox, *label;
  int i;
  vbox = gtk_vbox_new( TRUE, 3 );

  for ( i = 0; i < label_count; i++ )
  {
    label = gtk_label_new(NULL);
    gtk_label_set_markup ( GTK_LABEL(label), _(texts[i]) );
    gtk_box_pack_start ( GTK_BOX(vbox), label, FALSE, TRUE, 5 );
  }
  return vbox;
}

gboolean a_dialog_yes_or_no ( GtkWindow *parent, const gchar *message, const gchar *extra )
{
  GtkWidget *dia;
  dia = gtk_message_dialog_new ( parent,
                                 GTK_DIALOG_DESTROY_WITH_PARENT,
                                 GTK_MESSAGE_QUESTION,
                                 GTK_BUTTONS_YES_NO,
                                 message, extra );

  if ( gtk_dialog_run ( GTK_DIALOG(dia) ) == GTK_RESPONSE_YES )
  {
    gtk_widget_destroy ( dia );
    return TRUE;
  }
  else
  {
    gtk_widget_destroy ( dia );
    return FALSE;
  }
}

static void zoom_spin_changed ( GtkSpinButton *spin, GtkWidget *pass_along[3] )
{
  if ( gtk_toggle_button_get_active ( GTK_TOGGLE_BUTTON(pass_along[2]) ) )
    gtk_spin_button_set_value ( 
        GTK_SPIN_BUTTON(pass_along[GTK_WIDGET(spin) == pass_along[0] ? 1 : 0]),
        gtk_spin_button_get_value ( spin ) );
}

gboolean a_dialog_custom_zoom ( GtkWindow *parent, gdouble *xmpp, gdouble *ympp )
{
  GtkWidget *dialog = gtk_dialog_new_with_buttons (_("Zoom Factors..."),
                                                  parent,
                                                  GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
                                                  GTK_STOCK_CANCEL,
                                                  GTK_RESPONSE_REJECT,
                                                  GTK_STOCK_OK,
                                                  GTK_RESPONSE_ACCEPT,
                                                  NULL);
  GtkWidget *table, *label, *xlabel, *xspin, *ylabel, *yspin, *samecheck;
  GtkWidget *pass_along[3];

  table = gtk_table_new ( 4, 2, FALSE );
  gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), table, TRUE, TRUE, 0 );

  label = gtk_label_new ( _("Zoom factor (in meters per pixel):") );
  xlabel = gtk_label_new ( _("X (easting): "));
  ylabel = gtk_label_new ( _("Y (northing): "));

  pass_along[0] = xspin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( *xmpp, VIK_VIEWPORT_MIN_ZOOM, VIK_VIEWPORT_MAX_ZOOM, 1, 5, 0 ), 1, 8 );
  pass_along[1] = yspin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( *ympp, VIK_VIEWPORT_MIN_ZOOM, VIK_VIEWPORT_MAX_ZOOM, 1, 5, 0 ), 1, 8 );

  pass_along[2] = samecheck = gtk_check_button_new_with_label ( _("X and Y zoom factors must be equal") );
  /* TODO -- same factor */
  /*  samecheck = gtk_check_button_new_with_label ( "Same x/y zoom factor" ); */

  if ( *xmpp == *ympp )
    gtk_toggle_button_set_active ( GTK_TOGGLE_BUTTON(samecheck), TRUE );

  gtk_table_attach_defaults ( GTK_TABLE(table), label, 0, 2, 0, 1 );
  gtk_table_attach_defaults ( GTK_TABLE(table), xlabel, 0, 1, 1, 2 );
  gtk_table_attach_defaults ( GTK_TABLE(table), xspin, 1, 2, 1, 2 );
  gtk_table_attach_defaults ( GTK_TABLE(table), ylabel, 0, 1, 2, 3 );
  gtk_table_attach_defaults ( GTK_TABLE(table), yspin, 1, 2, 2, 3 );
  gtk_table_attach_defaults ( GTK_TABLE(table), samecheck, 0, 2, 3, 4 );

  gtk_widget_show_all ( table );

  g_signal_connect ( G_OBJECT(xspin), "value-changed", G_CALLBACK(zoom_spin_changed), pass_along );
  g_signal_connect ( G_OBJECT(yspin), "value-changed", G_CALLBACK(zoom_spin_changed), pass_along );

  gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );

  if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) == GTK_RESPONSE_ACCEPT )
  {
    *xmpp = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(xspin) );
    *ympp = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(yspin) );
    gtk_widget_destroy ( dialog );
    return TRUE;
  }
  gtk_widget_destroy ( dialog );
  return FALSE;
}

static void split_spin_focused ( GtkSpinButton *spin, GtkWidget *pass_along[1] )
{
  gtk_toggle_button_set_active    (GTK_TOGGLE_BUTTON(pass_along[0]), 1);
}

gboolean a_dialog_time_threshold ( GtkWindow *parent, gchar *title_text, gchar *label_text, guint *thr )
{
  GtkWidget *dialog = gtk_dialog_new_with_buttons (title_text, 
                                                  parent,
                                                  GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
                                                  GTK_STOCK_CANCEL,
                                                  GTK_RESPONSE_REJECT,
                                                  GTK_STOCK_OK,
                                                  GTK_RESPONSE_ACCEPT,
                                                  NULL);
  GtkWidget *table, *t1, *t2, *t3, *t4, *spin, *label;
  GtkWidget *pass_along[1];

  table = gtk_table_new ( 4, 2, FALSE );
  gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), table, TRUE, TRUE, 0 );

  label = gtk_label_new (label_text);

  t1 = gtk_radio_button_new_with_label ( NULL, _("1 min") );
  t2 = gtk_radio_button_new_with_label_from_widget ( GTK_RADIO_BUTTON(t1), _("1 hour") );
  t3 = gtk_radio_button_new_with_label_from_widget ( GTK_RADIO_BUTTON(t2), _("1 day") );
  t4 = gtk_radio_button_new_with_label_from_widget ( GTK_RADIO_BUTTON(t3), _("Custom (in minutes):") );

  pass_along[0] = t4;

  spin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( *thr, 0, 65536, 1, 5, 0 ), 1, 0 );

  gtk_table_attach_defaults ( GTK_TABLE(table), label, 0, 2, 0, 1 );
  gtk_table_attach_defaults ( GTK_TABLE(table), t1, 0, 1, 1, 2 );
  gtk_table_attach_defaults ( GTK_TABLE(table), t2, 0, 1, 2, 3 );
  gtk_table_attach_defaults ( GTK_TABLE(table), t3, 0, 1, 3, 4 );
  gtk_table_attach_defaults ( GTK_TABLE(table), t4, 0, 1, 4, 5 );
  gtk_table_attach_defaults ( GTK_TABLE(table), spin, 1, 2, 4, 5 );

  gtk_widget_show_all ( table );

  g_signal_connect ( G_OBJECT(spin), "grab-focus", G_CALLBACK(split_spin_focused), pass_along );

  gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );

  if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) == GTK_RESPONSE_ACCEPT )
  {
    if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(t1))) {
      *thr = 1;
    } else if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(t2))) {
      *thr = 60;
    } else if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(t3))) {
      *thr = 60 * 24;
    } else if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(t4))) {
      *thr = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(spin) );
    }
    gtk_widget_destroy ( dialog );
    return TRUE;
  }
  gtk_widget_destroy ( dialog );
  return FALSE;
}

/**
 * Dialog to return a positive number via a spinbox within the supplied limits
 * A return value of zero indicates the dialog was cancelled
 */
guint a_dialog_get_positive_number ( GtkWindow *parent, gchar *title_text, gchar *label_text, guint default_num, guint min, guint max, guint step )
{
  GtkWidget *dialog = gtk_dialog_new_with_buttons (title_text,
						   parent,
						   GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
						   GTK_STOCK_CANCEL,
						   GTK_RESPONSE_REJECT,
						   GTK_STOCK_OK,
						   GTK_RESPONSE_ACCEPT,
						   NULL);
  gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
  GtkWidget *response_w = NULL;
#if GTK_CHECK_VERSION (2, 20, 0)
  response_w = gtk_dialog_get_widget_for_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
#endif

  GtkWidget *table, *spin, *label;
  guint result = default_num;

  table = gtk_table_new ( 2, 1, FALSE );
  gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), table, TRUE, TRUE, 0 );

  label = gtk_label_new (label_text);
  spin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( default_num, min, max, step, 5, 0 ), 1, 0 );

  gtk_table_attach_defaults ( GTK_TABLE(table), label, 0, 1, 0, 1 );
  gtk_table_attach_defaults ( GTK_TABLE(table), spin, 0, 1, 1, 2 );

  if ( response_w )
    gtk_widget_grab_focus ( response_w );

  gtk_widget_show_all ( table );

  if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) == GTK_RESPONSE_ACCEPT )
  {
    result = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(spin) );
    gtk_widget_destroy ( dialog );
    return result;
  }

  // Dialog cancelled
  gtk_widget_destroy ( dialog );
  return 0;
}

static void about_url_hook (GtkAboutDialog *about,
                            const gchar    *link,
                            gpointer        data)
{
  open_url (GTK_WINDOW(about), link);
}

static void about_email_hook (GtkAboutDialog *about,
                              const gchar    *email,
                              gpointer        data)
{
  new_email (GTK_WINDOW(about), email);
}

void a_dialog_about ( GtkWindow *parent )
{
  const gchar *program_name = PACKAGE_NAME;
  const gchar *version = VIKING_VERSION;
  const gchar *website = VIKING_URL;
  const gchar *copyright = "2003-2008, Evan Battaglia\n2008-2010, Viking's contributors";
  const gchar *comments = _("GPS Data and Topo Analyzer, Explorer, and Manager.");
  const gchar *license = _("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 of the License, or "
			"(at your option) any later version."
			"\n\n"
			"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."
			"\n\n"
			"You should have received a copy of the GNU General Public License "
			"along with this program; if not, write to the Free Software "
			"Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA");

  gtk_about_dialog_set_url_hook (about_url_hook, NULL, NULL);
  gtk_about_dialog_set_email_hook (about_email_hook, NULL, NULL);
  gtk_show_about_dialog (parent,
	/* TODO do not set program-name and correctly set info for g_get_application_name */
  	"program-name", program_name,
	"version", version,
	"website", website,
	"comments", comments,
	"copyright", copyright,
	"license", license,
	"wrap-license", TRUE,
	/* logo automatically retrieved via gtk_window_get_default_icon_list */
	"authors", AUTHORS,
	"documenters", DOCUMENTERS,
	"translator-credits", _("Translation is coordinated on http://launchpad.net/viking"),
	NULL);
}

gboolean a_dialog_map_n_zoom(GtkWindow *parent, gchar *mapnames[], gint default_map, gchar *zoom_list[], gint default_zoom, gint *selected_map, gint *selected_zoom)
{
  gchar **s;

  GtkWidget *dialog = gtk_dialog_new_with_buttons ( _("Download along track"), parent, 0, GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL );
  gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
  GtkWidget *response_w = NULL;
#if GTK_CHECK_VERSION (2, 20, 0)
  response_w = gtk_dialog_get_widget_for_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
#endif
  GtkWidget *map_label = gtk_label_new(_("Map type:"));
  GtkComboBox *map_combo = GTK_COMBO_BOX(gtk_combo_box_new_text());
  for (s = mapnames; *s; s++)
    gtk_combo_box_append_text(map_combo, *s);
  gtk_combo_box_set_active (map_combo, default_map);
  GtkWidget *zoom_label = gtk_label_new(_("Zoom level:"));
  GtkComboBox *zoom_combo = GTK_COMBO_BOX(gtk_combo_box_new_text());
  for (s = zoom_list; *s; s++)
    gtk_combo_box_append_text(zoom_combo, *s);
  gtk_combo_box_set_active (zoom_combo, default_zoom);

  GtkTable *box = GTK_TABLE(gtk_table_new(2, 2, FALSE));
  gtk_table_attach_defaults(box, GTK_WIDGET(map_label), 0, 1, 0, 1);
  gtk_table_attach_defaults(box, GTK_WIDGET(map_combo), 1, 2, 0, 1);
  gtk_table_attach_defaults(box, GTK_WIDGET(zoom_label), 0, 1, 1, 2);
  gtk_table_attach_defaults(box, GTK_WIDGET(zoom_combo), 1, 2, 1, 2);

  gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), GTK_WIDGET(box), FALSE, FALSE, 5 );

  if ( response_w )
    gtk_widget_grab_focus ( response_w );

  gtk_widget_show_all ( dialog );
  if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) != GTK_RESPONSE_ACCEPT ) {
    gtk_widget_destroy(dialog);
    return FALSE;
  }

  *selected_map = gtk_combo_box_get_active(map_combo);
  *selected_zoom = gtk_combo_box_get_active(zoom_combo);

  gtk_widget_destroy(dialog);
  return TRUE;
}

/**
 * Display a dialog presenting the license of a map.
 * Allow to read the license by launching a web browser.
 */
void a_dialog_license ( GtkWindow *parent, const gchar *map, const gchar *license, const gchar *url)
{
  GtkWidget *dialog = gtk_message_dialog_new (parent,
                                 GTK_DIALOG_DESTROY_WITH_PARENT,
                                 GTK_MESSAGE_INFO,
                                 GTK_BUTTONS_OK,
                                 _("The map data is licensed: %s."),
                                 license);
  gtk_message_dialog_format_secondary_markup (GTK_MESSAGE_DIALOG (dialog),
    _("The data provided by '<b>%s</b>' are licensed under the following license: <b>%s</b>.\n"
    "Please, read the license before continuing."),
    map, license);
#define RESPONSE_OPEN_LICENSE 600
  if (url != NULL) {
    gtk_dialog_add_button (GTK_DIALOG (dialog), _("Open license"), RESPONSE_OPEN_LICENSE);
  }
  gint response;
  do {
    response = gtk_dialog_run (GTK_DIALOG (dialog));
    if (response == RESPONSE_OPEN_LICENSE) {
      open_url (parent, url);
    }
  } while (response != GTK_RESPONSE_DELETE_EVENT && response != GTK_RESPONSE_OK);
  gtk_widget_destroy (dialog);
}