/* PSPPIRE - a graphical user interface for PSPP.
   Copyright (C) 2008, 2009, 2010, 2011, 2012  Free Software Foundation

   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 3 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, see <http://www.gnu.org/licenses/>. */

#include <config.h>

#include <gtk/gtk.h>
#include <stdlib.h>

#include "data/dataset.h"
#include "data/session.h"
#include "language/lexer/lexer.h"
#include "libpspp/message.h"
#include "libpspp/str.h"
#include "ui/gui/aggregate-dialog.h"
#include "ui/gui/autorecode-dialog.h"
#include "ui/gui/binomial-dialog.h"
#include "ui/gui/builder-wrapper.h"
#include "ui/gui/chi-square-dialog.h"
#include "ui/gui/comments-dialog.h"
#include "ui/gui/compute-dialog.h"
#include "ui/gui/count-dialog.h"
#include "ui/gui/crosstabs-dialog.h"
#include "ui/gui/entry-dialog.h"
#include "ui/gui/executor.h"
#include "ui/gui/find-dialog.h"
#include "ui/gui/frequencies-dialog.h"
#include "ui/gui/goto-case-dialog.h"
#include "ui/gui/help-menu.h"
#include "ui/gui/helper.h"
#include "ui/gui/helper.h"
#include "ui/gui/k-related-dialog.h"
#include "ui/gui/npar-two-sample-related.h"
#include "ui/gui/oneway-anova-dialog.h"
#include "ui/gui/psppire-data-window.h"
#include "ui/gui/psppire-syntax-window.h"
#include "ui/gui/psppire-window.h"
#include "ui/gui/psppire.h"
#include "ui/gui/runs-dialog.h"
#include "ui/gui/ks-one-sample-dialog.h"
#include "ui/gui/recode-dialog.h"
#include "ui/gui/select-cases-dialog.h"
#include "ui/gui/split-file-dialog.h"
#include "ui/gui/t-test-one-sample.h"
#include "ui/gui/t-test-paired-samples.h"
#include "ui/gui/text-data-import-dialog.h"
#include "ui/gui/transpose-dialog.h"
#include "ui/gui/univariate-dialog.h"
#include "ui/gui/weight-cases-dialog.h"
#include "ui/syntax-gen.h"

#include "gl/c-strcase.h"
#include "gl/c-strcasestr.h"
#include "gl/xvasprintf.h"

#include <gettext.h>
#define _(msgid) gettext (msgid)
#define N_(msgid) msgid

struct session *the_session;
struct ll_list all_data_windows = LL_INITIALIZER (all_data_windows);

static void psppire_data_window_class_init    (PsppireDataWindowClass *class);
static void psppire_data_window_init          (PsppireDataWindow      *data_editor);


static void psppire_data_window_iface_init (PsppireWindowIface *iface);

static void psppire_data_window_dispose (GObject *object);
static void psppire_data_window_set_property (GObject         *object,
                                              guint            prop_id,
                                              const GValue    *value,
                                              GParamSpec      *pspec);
static void psppire_data_window_get_property (GObject         *object,
                                              guint            prop_id,
                                              GValue          *value,
                                              GParamSpec      *pspec);

GType
psppire_data_window_get_type (void)
{
  static GType psppire_data_window_type = 0;

  if (!psppire_data_window_type)
    {
      static const GTypeInfo psppire_data_window_info =
	{
	  sizeof (PsppireDataWindowClass),
	  NULL,
	  NULL,
	  (GClassInitFunc)psppire_data_window_class_init,
	  (GClassFinalizeFunc) NULL,
	  NULL,
	  sizeof (PsppireDataWindow),
	  0,
	  (GInstanceInitFunc) psppire_data_window_init,
	};

      static const GInterfaceInfo window_interface_info =
	{
	  (GInterfaceInitFunc) psppire_data_window_iface_init,
	  NULL,
	  NULL
	};

      psppire_data_window_type =
	g_type_register_static (PSPPIRE_TYPE_WINDOW, "PsppireDataWindow",
				&psppire_data_window_info, 0);


      g_type_add_interface_static (psppire_data_window_type,
				   PSPPIRE_TYPE_WINDOW_MODEL,
				   &window_interface_info);
    }

  return psppire_data_window_type;
}

static GObjectClass *parent_class ;

enum {
    PROP_DATASET = 1
};

static void
psppire_data_window_class_init (PsppireDataWindowClass *class)
{
  GObjectClass *object_class = G_OBJECT_CLASS (class);

  parent_class = g_type_class_peek_parent (class);

  object_class->dispose = psppire_data_window_dispose;
  object_class->set_property = psppire_data_window_set_property;
  object_class->get_property = psppire_data_window_get_property;

  g_object_class_install_property (
    object_class, PROP_DATASET,
    g_param_spec_pointer ("dataset", "Dataset",
                          "'struct datset *' represented by the window",
                          G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE));
}

static void
set_paste_menuitem_sensitivity (PsppireDataWindow *de, gboolean x)
{
  GtkAction *edit_paste = get_action_assert (de->builder, "edit_paste");

  gtk_action_set_sensitive (edit_paste, x);
}

static void
set_cut_copy_menuitem_sensitivity (PsppireDataWindow *de, gboolean x)
{
  GtkAction *edit_copy = get_action_assert (de->builder, "edit_copy");
  GtkAction *edit_cut = get_action_assert (de->builder, "edit_cut");

  gtk_action_set_sensitive (edit_copy, x);
  gtk_action_set_sensitive (edit_cut, x);
}

/* Run the EXECUTE command. */
static void
execute (PsppireDataWindow *dw)
{
  execute_const_syntax_string (dw, "EXECUTE.");
}

static void
transformation_change_callback (bool transformations_pending,
				gpointer data)
{
  PsppireDataWindow  *de = PSPPIRE_DATA_WINDOW (data);

  GtkUIManager *uim = GTK_UI_MANAGER (get_object_assert (de->builder, "uimanager1", GTK_TYPE_UI_MANAGER));

  GtkWidget *menuitem =
    gtk_ui_manager_get_widget (uim,"/ui/menubar/transform/transform_run-pending");

  GtkWidget *status_label  =
    get_widget_assert (de->builder, "case-counter-area");

  gtk_widget_set_sensitive (menuitem, transformations_pending);


  if ( transformations_pending)
    gtk_label_set_text (GTK_LABEL (status_label),
			_("Transformations Pending"));
  else
    gtk_label_set_text (GTK_LABEL (status_label), "");
}

/* Callback for when the dictionary changes its filter variable */
static void
on_filter_change (GObject *o, gint filter_index, gpointer data)
{
  PsppireDataWindow  *de = PSPPIRE_DATA_WINDOW (data);

  GtkWidget *filter_status_area =
    get_widget_assert (de->builder, "filter-use-status-area");

  if ( filter_index == -1 )
    {
      gtk_label_set_text (GTK_LABEL (filter_status_area), _("Filter off"));
    }
  else
    {
      PsppireVarStore *vs = NULL;
      PsppireDict *dict = NULL;
      struct variable *var ;
      gchar *text ;

      g_object_get (de->data_editor, "var-store", &vs, NULL);
      g_object_get (vs, "dictionary", &dict, NULL);

      var = psppire_dict_get_variable (dict, filter_index);

      text = g_strdup_printf (_("Filter by %s"), var_get_name (var));

      gtk_label_set_text (GTK_LABEL (filter_status_area), text);

      g_free (text);
    }
}

/* Callback for when the dictionary changes its split variables */
static void
on_split_change (PsppireDict *dict, gpointer data)
{
  PsppireDataWindow  *de = PSPPIRE_DATA_WINDOW (data);

  size_t n_split_vars = dict_get_split_cnt (dict->dict);

  GtkWidget *split_status_area =
    get_widget_assert (de->builder, "split-file-status-area");

  if ( n_split_vars == 0 )
    {
      gtk_label_set_text (GTK_LABEL (split_status_area), _("No Split"));
    }
  else
    {
      gint i;
      GString *text;
      const struct variable *const * split_vars =
	dict_get_split_vars (dict->dict);

      text = g_string_new (_("Split by "));

      for (i = 0 ; i < n_split_vars - 1; ++i )
	{
	  g_string_append_printf (text, "%s, ", var_get_name (split_vars[i]));
	}
      g_string_append (text, var_get_name (split_vars[i]));

      gtk_label_set_text (GTK_LABEL (split_status_area), text->str);

      g_string_free (text, TRUE);
    }
}




/* Callback for when the dictionary changes its weights */
static void
on_weight_change (GObject *o, gint weight_index, gpointer data)
{
  PsppireDataWindow  *de = PSPPIRE_DATA_WINDOW (data);

  GtkWidget *weight_status_area =
    get_widget_assert (de->builder, "weight-status-area");

  if ( weight_index == -1 )
    {
      gtk_label_set_text (GTK_LABEL (weight_status_area), _("Weights off"));
    }
  else
    {
      struct variable *var ;
      PsppireVarStore *vs = NULL;
      PsppireDict *dict = NULL;
      gchar *text;

      g_object_get (de->data_editor, "var-store", &vs, NULL);
      g_object_get (vs, "dictionary", &dict, NULL);

      var = psppire_dict_get_variable (dict, weight_index);

      text = g_strdup_printf (_("Weight by %s"), var_get_name (var));

      gtk_label_set_text (GTK_LABEL (weight_status_area), text);

      g_free (text);
    }
}

#if 0
static void
dump_rm (GtkRecentManager *rm)
{
  GList *items = gtk_recent_manager_get_items (rm);

  GList *i;

  g_print ("Recent Items:\n");
  for (i = items; i; i = i->next)
    {
      GtkRecentInfo *ri = i->data;

      g_print ("Item: %s (Mime: %s) (Desc: %s) (URI: %s)\n",
	       gtk_recent_info_get_short_name (ri),
	       gtk_recent_info_get_mime_type (ri),
	       gtk_recent_info_get_description (ri),
	       gtk_recent_info_get_uri (ri)
	       );


      gtk_recent_info_unref (ri);
    }

  g_list_free (items);
}
#endif

static gboolean
name_has_por_suffix (const gchar *name)
{
  size_t length = strlen (name);
  return length > 4 && !c_strcasecmp (&name[length - 4], ".por");
}

static gboolean
name_has_sav_suffix (const gchar *name)
{
  size_t length = strlen (name);
  return length > 4 && !c_strcasecmp (&name[length - 4], ".sav");
}

/* Returns true if NAME has a suffix which might denote a PSPP file */
static gboolean
name_has_suffix (const gchar *name)
{
  return name_has_por_suffix (name) || name_has_sav_suffix (name);
}

static gboolean
load_file (PsppireWindow *de, const gchar *file_name)
{
  struct string filename;
  gchar *utf8_file_name;
  const char *mime_type;
  gchar *syntax;
  bool ok;

  ds_init_empty (&filename);

  utf8_file_name = g_filename_to_utf8 (file_name, -1, NULL, NULL, NULL);

  syntax_gen_string (&filename, ss_cstr (utf8_file_name));

  g_free (utf8_file_name);

  syntax = g_strdup_printf ("GET FILE=%s.", ds_cstr (&filename));
  ds_destroy (&filename);

  ok = execute_syntax (PSPPIRE_DATA_WINDOW (de),
                       lex_reader_for_string (syntax));
  g_free (syntax);

  mime_type = (name_has_por_suffix (file_name)
               ? "application/x-spss-por"
               : "application/x-spss-sav");

  add_most_recent (file_name, mime_type);

  return ok;
}

/* Save DE to file */
static void
save_file (PsppireWindow *w)
{
  const gchar *file_name = NULL;
  gchar *utf8_file_name = NULL;
  GString *fnx;
  struct string filename ;
  PsppireDataWindow *de = PSPPIRE_DATA_WINDOW (w);
  gchar *syntax;

  file_name = psppire_window_get_filename (w);

  fnx = g_string_new (file_name);

  if ( ! name_has_suffix (fnx->str))
    {
      if ( de->save_as_portable)
	g_string_append (fnx, ".por");
      else
	g_string_append (fnx, ".sav");
    }

  ds_init_empty (&filename);

  utf8_file_name = g_filename_to_utf8 (fnx->str, -1, NULL, NULL, NULL);

  g_string_free (fnx, TRUE);

  syntax_gen_string (&filename, ss_cstr (utf8_file_name));
  g_free (utf8_file_name);

  syntax = g_strdup_printf ("%s OUTFILE=%s.",
                            de->save_as_portable ? "EXPORT" : "SAVE",
                            ds_cstr (&filename));

  ds_destroy (&filename);

  g_free (execute_syntax_string (de, syntax));
}


static void
insert_case (PsppireDataWindow *dw)
{
  psppire_data_editor_insert_case (dw->data_editor);
}

static void
on_insert_variable (PsppireDataWindow *dw)
{
  psppire_data_editor_insert_variable (dw->data_editor);
}


static void
display_dict (PsppireDataWindow *de)
{
  execute_const_syntax_string (de, "DISPLAY DICTIONARY.");
}

static void
sysfile_info (PsppireDataWindow *de)
{
  GtkWidget *dialog = psppire_window_file_chooser_dialog (PSPPIRE_WINDOW (de));

  if  ( GTK_RESPONSE_ACCEPT == gtk_dialog_run (GTK_DIALOG (dialog)))
    {
      struct string filename;
      gchar *file_name =
	gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));

      gchar *utf8_file_name = g_filename_to_utf8 (file_name, -1, NULL, NULL,
                                                  NULL);

      gchar *syntax;

      ds_init_empty (&filename);

      syntax_gen_string (&filename, ss_cstr (utf8_file_name));

      g_free (utf8_file_name);

      syntax = g_strdup_printf ("SYSFILE INFO %s.", ds_cstr (&filename));
      g_free (execute_syntax_string (de, syntax));
    }

  gtk_widget_destroy (dialog);
}


/* PsppireWindow 'pick_filename' callback: prompt for a filename to save as. */
static void
data_pick_filename (PsppireWindow *window)
{
  PsppireDataWindow *de = PSPPIRE_DATA_WINDOW (window);
  GtkFileFilter *filter = gtk_file_filter_new ();
  GtkWidget *button_sys;
  GtkWidget *dialog =
    gtk_file_chooser_dialog_new (_("Save"),
				 GTK_WINDOW (de),
				 GTK_FILE_CHOOSER_ACTION_SAVE,
				 GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
				 GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT,
				 NULL);

  g_object_set (dialog, "local-only", FALSE, NULL);

  gtk_file_filter_set_name (filter, _("System Files (*.sav)"));
  gtk_file_filter_add_mime_type (filter, "application/x-spss-sav");
  gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);

  filter = gtk_file_filter_new ();
  gtk_file_filter_set_name (filter, _("Portable Files (*.por) "));
  gtk_file_filter_add_mime_type (filter, "application/x-spss-por");
  gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);

  filter = gtk_file_filter_new ();
  gtk_file_filter_set_name (filter, _("All Files"));
  gtk_file_filter_add_pattern (filter, "*");
  gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);

  {
    GtkWidget *button_por;
    GtkWidget *vbox = gtk_vbox_new (TRUE, 5);
    button_sys =
      gtk_radio_button_new_with_label (NULL, _("System File"));

    button_por =
      gtk_radio_button_new_with_label
      (gtk_radio_button_get_group (GTK_RADIO_BUTTON(button_sys)),
       _("Portable File"));

    psppire_box_pack_start_defaults (GTK_BOX (vbox), button_sys);
    psppire_box_pack_start_defaults (GTK_BOX (vbox), button_por);

    gtk_widget_show_all (vbox);

    gtk_file_chooser_set_extra_widget (GTK_FILE_CHOOSER(dialog), vbox);
  }

  gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (dialog),
                                                  TRUE);

  switch (gtk_dialog_run (GTK_DIALOG (dialog)))
    {
    case GTK_RESPONSE_ACCEPT:
      {
	GString *filename =
	  g_string_new
	  (
	   gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog))
	   );

	de->save_as_portable =
	  ! gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button_sys));

	if ( ! name_has_suffix (filename->str))
	  {
	    if ( de->save_as_portable)
	      g_string_append (filename, ".por");
	    else
	      g_string_append (filename, ".sav");
	  }

	psppire_window_set_filename (PSPPIRE_WINDOW (de), filename->str);

	g_string_free (filename, TRUE);
      }
      break;
    default:
      break;
    }

  gtk_widget_destroy (dialog);
}

static bool
confirm_delete_dataset (PsppireDataWindow *de,
                        const char *old_dataset,
                        const char *new_dataset,
                        const char *existing_dataset)
{
  GtkWidget *dialog;
  int result;

  dialog = gtk_message_dialog_new (
    GTK_WINDOW (de), 0, GTK_MESSAGE_QUESTION, GTK_BUTTONS_NONE, "%s",
    _("Delete Existing Dataset?"));

  gtk_message_dialog_format_secondary_text (
    GTK_MESSAGE_DIALOG (dialog),
    _("Renaming \"%s\" to \"%s\" will destroy the existing "
      "dataset named \"%s\".  Are you sure that you want to do this?"),
    old_dataset, new_dataset, existing_dataset);

  gtk_dialog_add_buttons (GTK_DIALOG (dialog),
                          GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                          GTK_STOCK_DELETE, GTK_RESPONSE_OK,
                          NULL);

  g_object_set (dialog, "icon-name", "pspp", NULL);

  result = gtk_dialog_run (GTK_DIALOG (dialog));

  gtk_widget_destroy (dialog);

  return result == GTK_RESPONSE_OK;
}

static void
on_rename_dataset (PsppireDataWindow *de)
{
  struct dataset *ds = de->dataset;
  struct session *session = dataset_session (ds);
  const char *old_name = dataset_name (ds);
  struct dataset *existing_dataset;
  char *new_name;
  char *prompt;

  prompt = xasprintf (_("Please enter a new name for dataset \"%s\":"),
                      old_name);
  new_name = entry_dialog_run (GTK_WINDOW (de), _("Rename Dataset"), prompt,
                               old_name);
  free (prompt);

  if (new_name == NULL)
    return;

  existing_dataset = session_lookup_dataset (session, new_name);
  if (existing_dataset == NULL || existing_dataset == ds
      || confirm_delete_dataset (de, old_name, new_name,
                                 dataset_name (existing_dataset)))
    g_free (execute_syntax_string (de, g_strdup_printf ("DATASET NAME %s.",
                                                        new_name)));

  free (new_name);
}

static void
on_edit_paste (PsppireDataWindow  *de)
{
  psppire_data_editor_clip_paste (de->data_editor);
}

static void
on_edit_copy (PsppireDataWindow  *de)
{
  psppire_data_editor_clip_copy (de->data_editor);
}



static void
on_edit_cut (PsppireDataWindow  *de)
{
  psppire_data_editor_clip_cut (de->data_editor);
}


static void
status_bar_activate (PsppireDataWindow  *de, GtkToggleAction *action)
{
  GtkWidget *statusbar = get_widget_assert (de->builder, "status-bar");

  if ( gtk_toggle_action_get_active (action))
    gtk_widget_show (statusbar);
  else
    gtk_widget_hide (statusbar);
}


static void
grid_lines_activate (PsppireDataWindow  *de, GtkToggleAction *action)
{
  const gboolean grid_visible = gtk_toggle_action_get_active (action);

  psppire_data_editor_show_grid (de->data_editor, grid_visible);
}

static void
data_view_activate (PsppireDataWindow  *de)
{
  gtk_notebook_set_current_page (GTK_NOTEBOOK (de->data_editor), PSPPIRE_DATA_EDITOR_DATA_VIEW);
}


static void
variable_view_activate (PsppireDataWindow  *de)
{
  gtk_notebook_set_current_page (GTK_NOTEBOOK (de->data_editor), PSPPIRE_DATA_EDITOR_VARIABLE_VIEW);
}


static void
fonts_activate (PsppireDataWindow  *de)
{
  GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (de));
  PangoFontDescription *current_font;
  gchar *font_name;
  GtkWidget *dialog =
    gtk_font_selection_dialog_new (_("Font Selection"));


  current_font = GTK_WIDGET(de->data_editor)->style->font_desc;
  font_name = pango_font_description_to_string (current_font);

  gtk_font_selection_dialog_set_font_name (GTK_FONT_SELECTION_DIALOG (dialog), font_name);

  g_free (font_name);

  gtk_window_set_transient_for (GTK_WINDOW (dialog),
				GTK_WINDOW (toplevel));

  if ( GTK_RESPONSE_OK == gtk_dialog_run (GTK_DIALOG (dialog)) )
    {
      const gchar *font = gtk_font_selection_dialog_get_font_name
	(GTK_FONT_SELECTION_DIALOG (dialog));

      PangoFontDescription* font_desc =
	pango_font_description_from_string (font);

      psppire_data_editor_set_font (de->data_editor, font_desc);
    }

  gtk_widget_hide (dialog);
}



/* Callback for the value labels action */
static void
toggle_value_labels (PsppireDataWindow  *de, GtkToggleAction *ta)
{
  g_object_set (de->data_editor, "value-labels", gtk_toggle_action_get_active (ta), NULL);
}

static void
toggle_split_window (PsppireDataWindow  *de, GtkToggleAction *ta)
{
  psppire_data_editor_split_window (de->data_editor,
				    gtk_toggle_action_get_active (ta));
}


static void
file_quit (PsppireDataWindow *de)
{
  /* FIXME: Need to be more intelligent here.
     Give the user the opportunity to save any unsaved data.
  */
  psppire_quit ();
}


static void
on_recent_data_select (GtkMenuShell *menushell,
		       PsppireWindow *window)
{
  gchar *file;

  gchar *uri =
    gtk_recent_chooser_get_current_uri (GTK_RECENT_CHOOSER (menushell));

  file = g_filename_from_uri (uri, NULL, NULL);

  g_free (uri);

  open_data_window (window, file);

  g_free (file);
}

static char *
charset_from_mime_type (const char *mime_type)
{
  const char *charset;
  struct string s;
  const char *p;

  if (mime_type == NULL)
    return NULL;

  charset = c_strcasestr (mime_type, "charset=");
  if (charset == NULL)
    return NULL;

  ds_init_empty (&s);
  p = charset + 8;
  if (*p == '"')
    {
      /* Parse a "quoted-string" as defined by RFC 822. */
      for (p++; *p != '\0' && *p != '"'; p++)
        {
          if (*p != '\\')
            ds_put_byte (&s, *p);
          else if (*++p != '\0')
            ds_put_byte (&s, *p);
        }
    }
  else
    {
      /* Parse a "token" as defined by RFC 2045. */
      while (*p > 32 && *p < 127 && strchr ("()<>@,;:\\\"/[]?=", *p) == NULL)
        ds_put_byte (&s, *p++);
    }
  if (!ds_is_empty (&s))
    return ds_steal_cstr (&s);

  ds_destroy (&s);
  return NULL;
}

static void
on_recent_files_select (GtkMenuShell *menushell,   gpointer user_data)
{
  GtkRecentInfo *item;
  char *encoding;
  GtkWidget *se;
  gchar *file;

  /* Get the file name and its encoding. */
  item = gtk_recent_chooser_get_current_item (GTK_RECENT_CHOOSER (menushell));
  file = g_filename_from_uri (gtk_recent_info_get_uri (item), NULL, NULL);
  encoding = charset_from_mime_type (gtk_recent_info_get_mime_type (item));
  gtk_recent_info_unref (item);

  se = psppire_syntax_window_new (encoding);

  free (encoding);

  if ( psppire_window_load (PSPPIRE_WINDOW (se), file) ) 
    gtk_widget_show (se);
  else
    gtk_widget_destroy (se);

  g_free (file);
}



static void
enable_delete_cases (GtkWidget *w, gint case_num, gpointer data)
{
  PsppireDataWindow *de = PSPPIRE_DATA_WINDOW (data);

  gtk_action_set_visible (de->delete_cases, case_num != -1);
}


static void
enable_delete_variables (GtkWidget *w, gint var, gpointer data)
{
  PsppireDataWindow *de = PSPPIRE_DATA_WINDOW (data);

  gtk_action_set_visible (de->delete_variables, var != -1);
}

/* Callback for when the datasheet/varsheet is selected */
static void
on_switch_sheet (GtkNotebook *notebook,
		 GtkNotebookPage *page,
		 guint page_num,
		 gpointer user_data)
{
  PsppireDataWindow *de = PSPPIRE_DATA_WINDOW (user_data);

  GtkUIManager *uim = GTK_UI_MANAGER (get_object_assert (de->builder, "uimanager1", GTK_TYPE_UI_MANAGER));

  GtkWidget *view_data =
    gtk_ui_manager_get_widget (uim,"/ui/menubar/view/view_data");

  GtkWidget *view_variables =
    gtk_ui_manager_get_widget (uim,"/ui/menubar/view/view_variables");

  switch (page_num)
    {
    case PSPPIRE_DATA_EDITOR_VARIABLE_VIEW:
      gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (view_variables),
                                      TRUE);
      gtk_action_set_sensitive (de->insert_variable, TRUE);
      gtk_action_set_sensitive (de->insert_case, FALSE);
      gtk_action_set_sensitive (de->invoke_goto_dialog, FALSE);
      break;
    case PSPPIRE_DATA_EDITOR_DATA_VIEW:
      gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (view_data), TRUE);
      gtk_action_set_sensitive (de->invoke_goto_dialog, TRUE);
      gtk_action_set_sensitive (de->insert_case, TRUE);
      break;
    default:
      g_assert_not_reached ();
      break;
    }

#if 0
  update_paste_menuitem (de, page_num);
#endif
}



static void
set_unsaved (gpointer w)
{
  psppire_window_set_unsaved (PSPPIRE_WINDOW (w));
}


/* Connects the action called ACTION_NAME to HANDLER passing DW as the auxilliary data.
   Returns a pointer to the action
*/
static GtkAction *
connect_action (PsppireDataWindow *dw, const char *action_name, 
				    GCallback handler)
{
  GtkAction *action = get_action_assert (dw->builder, action_name);
 
  g_signal_connect_swapped (action, "activate", handler, dw);

  return action;
}

/* Initializes as much of a PsppireDataWindow as we can and must before the
   dataset has been set.

   In particular, the 'menu' member is required in case the "filename" property
   is set before the "dataset" property: otherwise PsppireWindow will try to
   modify the menu as part of the "filename" property_set() function and end up
   with a Gtk-CRITICAL since 'menu' is NULL.  */
static void
psppire_data_window_init (PsppireDataWindow *de)
{
  GtkUIManager *uim;

  de->builder = builder_new ("data-editor.ui");

  uim = GTK_UI_MANAGER (get_object_assert (de->builder, "uimanager1", GTK_TYPE_UI_MANAGER));

  PSPPIRE_WINDOW (de)->menu =
    GTK_MENU_SHELL (gtk_ui_manager_get_widget (uim,"/ui/menubar/windows/windows_minimise_all")->parent);
}

static void
psppire_data_window_finish_init (PsppireDataWindow *de,
                                 struct dataset *ds)
{
  static const struct dataset_callbacks cbs =
    {
      set_unsaved,                    /* changed */
      transformation_change_callback, /* transformations_changed */
    };

  PsppireDict *dict;

  GtkWidget *menubar;
  GtkWidget *hb ;
  GtkWidget *sb ;

  GtkWidget *box = gtk_vbox_new (FALSE, 0);

  de->dataset = ds;
  dict = psppire_dict_new_from_dict (dataset_dict (ds));
  de->var_store = psppire_var_store_new (dict);
  de->data_store = psppire_data_store_new (dict);
  psppire_data_store_set_reader (de->data_store, NULL);

  menubar = get_widget_assert (de->builder, "menubar");
  hb = get_widget_assert (de->builder, "handlebox1");
  sb = get_widget_assert (de->builder, "status-bar");

  de->data_editor =
    PSPPIRE_DATA_EDITOR (psppire_data_editor_new (de, de->var_store,
                                                  de->data_store));

  g_signal_connect_swapped (de->data_store, "case-changed",
			    G_CALLBACK (set_unsaved), de);

  g_signal_connect_swapped (de->data_store, "case-inserted",
			    G_CALLBACK (set_unsaved), de);

  g_signal_connect_swapped (de->data_store, "cases-deleted",
			    G_CALLBACK (set_unsaved), de);

  dataset_set_callbacks (de->dataset, &cbs, de);

  connect_help (de->builder);

  gtk_box_pack_start (GTK_BOX (box), menubar, FALSE, TRUE, 0);
  gtk_box_pack_start (GTK_BOX (box), hb, FALSE, TRUE, 0);
  gtk_box_pack_start (GTK_BOX (box), GTK_WIDGET (de->data_editor), TRUE, TRUE, 0);
  gtk_box_pack_start (GTK_BOX (box), sb, FALSE, TRUE, 0);

  gtk_container_add (GTK_CONTAINER (de), box);

  set_cut_copy_menuitem_sensitivity (de, FALSE);

  g_signal_connect_swapped (de->data_editor, "data-selection-changed",
			    G_CALLBACK (set_cut_copy_menuitem_sensitivity), de);


  set_paste_menuitem_sensitivity (de, FALSE);

  g_signal_connect_swapped (de->data_editor, "data-available-changed",
			    G_CALLBACK (set_paste_menuitem_sensitivity), de);

  g_signal_connect (dict, "weight-changed",
		    G_CALLBACK (on_weight_change),
		    de);

  g_signal_connect (dict, "filter-changed",
		    G_CALLBACK (on_filter_change),
		    de);

  g_signal_connect (dict, "split-changed",
		    G_CALLBACK (on_split_change),
		    de);


  connect_action (de, "edit_copy", G_CALLBACK (on_edit_copy));

  connect_action (de, "edit_cut", G_CALLBACK (on_edit_cut));

  connect_action (de, "file_new_data", G_CALLBACK (create_data_window));

  connect_action (de, "file_import-text", G_CALLBACK (text_data_import_assistant));

  connect_action (de, "file_save", G_CALLBACK (psppire_window_save));
 
  connect_action (de, "file_open", G_CALLBACK (psppire_window_open));

  connect_action (de, "file_save_as", G_CALLBACK (psppire_window_save_as));

  connect_action (de, "rename_dataset", G_CALLBACK (on_rename_dataset));

  connect_action (de, "file_information_working-file", G_CALLBACK (display_dict));

  connect_action (de, "file_information_external-file", G_CALLBACK (sysfile_info));

  connect_action (de, "edit_paste", G_CALLBACK (on_edit_paste));

  de->insert_case = connect_action (de, "edit_insert-case", G_CALLBACK (insert_case));

  de->insert_variable = connect_action (de, "action_insert-variable", G_CALLBACK (on_insert_variable));

  de->invoke_goto_dialog = connect_action (de, "edit_goto-case", G_CALLBACK (goto_case_dialog));

  g_signal_connect_swapped (get_action_assert (de->builder, "view_value-labels"), "toggled", G_CALLBACK (toggle_value_labels), de);

  {
    de->delete_cases = get_action_assert (de->builder, "edit_clear-cases");

    g_signal_connect_swapped (de->delete_cases, "activate", G_CALLBACK (psppire_data_editor_delete_cases), de->data_editor);

    gtk_action_set_visible (de->delete_cases, FALSE);
  }


  {
    de->delete_variables = get_action_assert (de->builder, "edit_clear-variables");

    g_signal_connect_swapped (de->delete_variables, "activate", G_CALLBACK (psppire_data_editor_delete_variables), de->data_editor);

    gtk_action_set_visible (de->delete_variables, FALSE);
  }


  connect_action (de, "data_transpose", G_CALLBACK (transpose_dialog));
  connect_action (de, "data_select-cases", G_CALLBACK (select_cases_dialog));
  connect_action (de, "data_aggregate", G_CALLBACK (aggregate_dialog));
  connect_action (de, "transform_compute", G_CALLBACK (compute_dialog));
  connect_action (de, "transform_autorecode", G_CALLBACK (autorecode_dialog));
  connect_action (de, "edit_find", G_CALLBACK (find_dialog));
  connect_action (de, "data_split-file", G_CALLBACK (split_file_dialog));
  connect_action (de, "data_weight-cases", G_CALLBACK (weight_cases_dialog));
  connect_action (de, "oneway-anova", G_CALLBACK (oneway_anova_dialog));
  connect_action (de, "paired-t-test", G_CALLBACK (t_test_paired_samples_dialog));
  connect_action (de, "one-sample-t-test", G_CALLBACK (t_test_one_sample_dialog));
  connect_action (de, "utilities_comments", G_CALLBACK (comments_dialog));
  connect_action (de, "transform_count", G_CALLBACK (count_dialog));
  connect_action (de, "transform_recode-same", G_CALLBACK (recode_same_dialog));
  connect_action (de, "transform_recode-different", G_CALLBACK (recode_different_dialog));
  connect_action (de, "analyze_frequencies", G_CALLBACK (frequencies_dialog));
  connect_action (de, "crosstabs", G_CALLBACK (crosstabs_dialog));
  connect_action (de, "univariate", G_CALLBACK (univariate_dialog));
  connect_action (de, "chi-square", G_CALLBACK (chisquare_dialog));
  connect_action (de, "binomial", G_CALLBACK (binomial_dialog));
  connect_action (de, "runs", G_CALLBACK (runs_dialog));
  connect_action (de, "ks-one-sample", G_CALLBACK (ks_one_sample_dialog));
  connect_action (de, "k-related-samples", G_CALLBACK (k_related_dialog));
  connect_action (de, "two-related-samples", G_CALLBACK (two_related_dialog));

  {
    GtkUIManager *uim = GTK_UI_MANAGER (get_object_assert (de->builder, "uimanager1", GTK_TYPE_UI_MANAGER));

    GtkWidget *recent_data =
      gtk_ui_manager_get_widget (uim,"/ui/menubar/file/file_recent-data");

    GtkWidget *recent_files =
      gtk_ui_manager_get_widget (uim,"/ui/menubar/file/file_recent-files");


    GtkWidget *menu_data = gtk_recent_chooser_menu_new_for_manager (
      gtk_recent_manager_get_default ());

    GtkWidget *menu_files = gtk_recent_chooser_menu_new_for_manager (
      gtk_recent_manager_get_default ());

    g_object_set (menu_data, "show-tips",  TRUE, NULL);
    g_object_set (menu_files, "show-tips",  TRUE, NULL);

    {
      GtkRecentFilter *filter = gtk_recent_filter_new ();

      gtk_recent_filter_add_mime_type (filter, "application/x-spss-sav");
      gtk_recent_filter_add_mime_type (filter, "application/x-spss-por");

      gtk_recent_chooser_set_sort_type (GTK_RECENT_CHOOSER (menu_data), GTK_RECENT_SORT_MRU);

      gtk_recent_chooser_add_filter (GTK_RECENT_CHOOSER (menu_data), filter);
    }

    gtk_menu_item_set_submenu (GTK_MENU_ITEM (recent_data), menu_data);


    g_signal_connect (menu_data, "selection-done", G_CALLBACK (on_recent_data_select), de);

    {
      GtkRecentFilter *filter = gtk_recent_filter_new ();

      gtk_recent_filter_add_pattern (filter, "*.sps");
      gtk_recent_filter_add_pattern (filter, "*.SPS");

      gtk_recent_chooser_set_sort_type (GTK_RECENT_CHOOSER (menu_files), GTK_RECENT_SORT_MRU);

      gtk_recent_chooser_add_filter (GTK_RECENT_CHOOSER (menu_files), filter);
    }

    gtk_menu_item_set_submenu (GTK_MENU_ITEM (recent_files), menu_files);

    g_signal_connect (menu_files, "selection-done", G_CALLBACK (on_recent_files_select), de);

  }

  connect_action (de, "file_new_syntax", G_CALLBACK (create_syntax_window));


  g_signal_connect (de->data_editor,
		    "cases-selected",
		    G_CALLBACK (enable_delete_cases),
		    de);

  g_signal_connect (de->data_editor,
		    "variables-selected",
		    G_CALLBACK (enable_delete_variables),
		    de);


  g_signal_connect (de->data_editor,
		    "switch-page",
		    G_CALLBACK (on_switch_sheet), de);

  gtk_notebook_set_current_page (GTK_NOTEBOOK (de->data_editor), PSPPIRE_DATA_EDITOR_VARIABLE_VIEW);
  gtk_notebook_set_current_page (GTK_NOTEBOOK (de->data_editor), PSPPIRE_DATA_EDITOR_DATA_VIEW);

  connect_action (de, "view_statusbar", G_CALLBACK (status_bar_activate));

  connect_action (de, "view_gridlines", G_CALLBACK (grid_lines_activate));

  connect_action (de, "view_data", G_CALLBACK (data_view_activate));

  connect_action (de, "view_variables", G_CALLBACK (variable_view_activate));

  connect_action (de, "view_fonts", G_CALLBACK (fonts_activate));

  connect_action (de, "file_quit", G_CALLBACK (file_quit));

  connect_action (de, "transform_run-pending", G_CALLBACK (execute));

  connect_action (de, "windows_minimise_all", G_CALLBACK (psppire_window_minimise_all));

  g_signal_connect_swapped (get_action_assert (de->builder, "windows_split"), "toggled", G_CALLBACK (toggle_split_window), de);

  {
    GtkUIManager *uim = GTK_UI_MANAGER (get_object_assert (de->builder, "uimanager1", GTK_TYPE_UI_MANAGER));

    merge_help_menu (uim);
  }

  {
    GtkWidget *data_sheet_cases_popup_menu = get_widget_assert (de->builder,
								"datasheet-cases-popup");

    GtkWidget *var_sheet_variable_popup_menu = get_widget_assert (de->builder,
								  "varsheet-variable-popup");

    GtkWidget *data_sheet_variable_popup_menu = get_widget_assert (de->builder,
								   "datasheet-variable-popup");

    g_signal_connect_swapped (get_action_assert (de->builder, "sort-up"), "activate",
			      G_CALLBACK (psppire_data_editor_sort_ascending),
			      de->data_editor);

    g_signal_connect_swapped (get_action_assert (de->builder, "sort-down"), "activate",
			      G_CALLBACK (psppire_data_editor_sort_descending),
			      de->data_editor);

    g_object_set (de->data_editor,
		  "datasheet-column-menu", data_sheet_variable_popup_menu,
		  "datasheet-row-menu", data_sheet_cases_popup_menu,
		  "varsheet-row-menu", var_sheet_variable_popup_menu,
		  NULL);
  }

  gtk_widget_show (GTK_WIDGET (de->data_editor));
  gtk_widget_show (box);

  ll_push_head (&all_data_windows, &de->ll);
}

static void
psppire_data_window_dispose (GObject *object)
{
  PsppireDataWindow *dw = PSPPIRE_DATA_WINDOW (object);

  if (dw->builder != NULL)
    {
      g_object_unref (dw->builder);
      dw->builder = NULL;
    }

  if (dw->var_store)
    {
      g_object_unref (dw->var_store);
      dw->var_store = NULL;
    }

  if (dw->data_store)
    {
      g_object_unref (dw->data_store);
      dw->data_store = NULL;
    }

  if (dw->ll.next != NULL)
    {
      ll_remove (&dw->ll);
      dw->ll.next = NULL;
    }

  if (G_OBJECT_CLASS (parent_class)->dispose)
    G_OBJECT_CLASS (parent_class)->dispose (object);
}

static void
psppire_data_window_set_property (GObject         *object,
                                  guint            prop_id,
                                  const GValue    *value,
                                  GParamSpec      *pspec)
{
  PsppireDataWindow *window = PSPPIRE_DATA_WINDOW (object);

  switch (prop_id)
    {
    case PROP_DATASET:
      psppire_data_window_finish_init (window, g_value_get_pointer (value));
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
    };
}

static void
psppire_data_window_get_property (GObject         *object,
                                  guint            prop_id,
                                  GValue          *value,
                                  GParamSpec      *pspec)
{
  PsppireDataWindow *window = PSPPIRE_DATA_WINDOW (object);

  switch (prop_id)
    {
    case PROP_DATASET:
      g_value_set_pointer (value, window->dataset);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
    };
}

GtkWidget*
psppire_data_window_new (struct dataset *ds)
{
  GtkWidget *dw;

  if (the_session == NULL)
    the_session = session_create ();

  if (ds == NULL)
    {
      static int n_datasets;
      char *dataset_name;

      dataset_name = xasprintf ("DataSet%d", ++n_datasets);
      ds = dataset_create (the_session, dataset_name);
      free (dataset_name);
    }
  assert (dataset_session (ds) == the_session);

  dw = GTK_WIDGET (
    g_object_new (
      psppire_data_window_get_type (),
      "description", _("Data Editor"),
      "dataset", ds,
      NULL));

  if (dataset_name (ds) != NULL)
    g_object_set (dw, "id", dataset_name (ds), (void *) NULL);

  return dw;
}

bool
psppire_data_window_is_empty (PsppireDataWindow *dw)
{
  return psppire_var_store_get_var_cnt (dw->var_store) == 0;
}

static void
psppire_data_window_iface_init (PsppireWindowIface *iface)
{
  iface->save = save_file;
  iface->pick_filename = data_pick_filename;
  iface->load = load_file;
}

PsppireDataWindow *
psppire_default_data_window (void)
{
  if (ll_is_empty (&all_data_windows))
    create_data_window ();
  return ll_data (ll_head (&all_data_windows), PsppireDataWindow, ll);
}

void
psppire_data_window_set_default (PsppireDataWindow *pdw)
{
  ll_remove (&pdw->ll);
  ll_push_head (&all_data_windows, &pdw->ll);
}

void
psppire_data_window_undefault (PsppireDataWindow *pdw)
{
  ll_remove (&pdw->ll);
  ll_push_tail (&all_data_windows, &pdw->ll);
}

PsppireDataWindow *
psppire_data_window_for_dataset (struct dataset *ds)
{
  PsppireDataWindow *pdw;

  ll_for_each (pdw, PsppireDataWindow, ll, &all_data_windows)
    if (pdw->dataset == ds)
      return pdw;

  return NULL;
}

void
create_data_window (void)
{
  gtk_widget_show (psppire_data_window_new (NULL));
}

void
open_data_window (PsppireWindow *victim, const char *file_name)
{
  GtkWidget *window;

  if (PSPPIRE_IS_DATA_WINDOW (victim)
      && psppire_data_window_is_empty (PSPPIRE_DATA_WINDOW (victim)))
    window = GTK_WIDGET (victim);
  else
    window = psppire_data_window_new (NULL);

  psppire_window_load (PSPPIRE_WINDOW (window), file_name);
  gtk_widget_show (window);
}