/* GtkCustomPaperUnixDialog

 * Copyright (C) 2006 Alexander Larsson <alexl@redhat.com>

 * Copyright © 2006, 2007, 2008 Christian Persch

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

#include "config.h"

#include <string.h>

#include <locale.h>

#ifdef HAVE__NL_MEASUREMENT_MEASUREMENT

#include <langinfo.h>

#endif

#include "gtkintl.h"

#include "gtkprivate.h"

#include "gtkliststore.h"

#include "gtktreeviewcolumn.h"

#include "gtklabel.h"

#include "gtkspinbutton.h"

#include "gtkcustompaperunixdialog.h"

#include "gtkprintbackend.h"

#include "gtkprintutils.h"

#include "gtkalias.h"

#define CUSTOM_PAPER_FILENAME ".gtk-custom-papers"

typedef struct

{

  GtkUnit    display_unit;

  GtkWidget *spin_button;

} UnitWidget;

struct GtkCustomPaperUnixDialogPrivate

{

  GtkWidget *treeview;

  GtkWidget *values_box;

  GtkWidget *printer_combo;

  GtkWidget *width_widget;

  GtkWidget *height_widget;

  GtkWidget *top_widget;

  GtkWidget *bottom_widget;

  GtkWidget *left_widget;

  GtkWidget *right_widget;

  GtkTreeViewColumn *text_column;

  gulong printer_inserted_tag;

  gulong printer_removed_tag;

  guint request_details_tag;

  GtkPrinter *request_details_printer;

  guint non_user_change : 1;

  GtkListStore *custom_paper_list;

  GtkListStore *printer_list;

  GList *print_backends;

  gchar *waiting_for_printer;

};

enum {

  PRINTER_LIST_COL_NAME,

  PRINTER_LIST_COL_PRINTER,

  PRINTER_LIST_N_COLS

};

G_DEFINE_TYPE (GtkCustomPaperUnixDialog, gtk_custom_paper_unix_dialog, GTK_TYPE_DIALOG)

#define GTK_CUSTOM_PAPER_UNIX_DIALOG_GET_PRIVATE(o)  \

   (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_CUSTOM_PAPER_UNIX_DIALOG, GtkCustomPaperUnixDialogPrivate))

static void gtk_custom_paper_unix_dialog_finalize  (GObject                *object);

static void populate_dialog                        (GtkCustomPaperUnixDialog *dialog);

static void printer_added_cb                       (GtkPrintBackend        *backend,

						    GtkPrinter             *printer,

						    GtkCustomPaperUnixDialog *dialog);

static void printer_removed_cb                     (GtkPrintBackend        *backend,

						    GtkPrinter             *printer,

						    GtkCustomPaperUnixDialog *dialog);

static void printer_status_cb                      (GtkPrintBackend        *backend,

						    GtkPrinter             *printer,

						    GtkCustomPaperUnixDialog *dialog);

GtkUnit

_gtk_print_get_default_user_units (void)

{

  /* Translate to the default units to use for presenting

   * lengths to the user. Translate to default:inch if you

   * want inches, otherwise translate to default:mm.

   * Do *not* translate it to "predefinito:mm", if it

   * it isn't default:mm or default:inch it will not work

   */

  gchar *e = _("default:mm");

#ifdef HAVE__NL_MEASUREMENT_MEASUREMENT

  gchar *imperial = NULL;

  imperial = nl_langinfo (_NL_MEASUREMENT_MEASUREMENT);

  if (imperial && imperial[0] == 2 )

    return GTK_UNIT_INCH;  /* imperial */

  if (imperial && imperial[0] == 1 )

    return GTK_UNIT_MM;  /* metric */

#endif

  if (strcmp (e, "default:inch")==0)

    return GTK_UNIT_INCH;

  else if (strcmp (e, "default:mm"))

    g_warning ("Whoever translated default:mm did so wrongly.\n");

  return GTK_UNIT_MM;

}

static char *

custom_paper_get_filename (void)

{

  gchar *filename;

  filename = g_build_filename (g_get_home_dir (),

			       CUSTOM_PAPER_FILENAME, NULL);

  g_assert (filename != NULL);

  return filename;

}

GList *

_gtk_load_custom_papers (void)

{

  GKeyFile *keyfile;

  gchar *filename;

  gchar **groups;

  gsize n_groups, i;

  gboolean load_ok;

  GList *result = NULL;

  filename = custom_paper_get_filename ();

  keyfile = g_key_file_new ();

  load_ok = g_key_file_load_from_file (keyfile, filename, 0, NULL);

  g_free (filename);

  if (!load_ok)

    {

      g_key_file_free (keyfile);

      return NULL;

    }

  groups = g_key_file_get_groups (keyfile, &n_groups);

  for (i = 0; i < n_groups; ++i)

    {

      GtkPageSetup *page_setup;

      page_setup = gtk_page_setup_new_from_key_file (keyfile, groups[i], NULL);

      if (!page_setup)

        continue;

      result = g_list_prepend (result, page_setup);

    }

  g_strfreev (groups);

  g_key_file_free (keyfile);

  return g_list_reverse (result);

}

void

_gtk_print_load_custom_papers (GtkListStore *store)

{

  GtkTreeIter iter;

  GList *papers, *p;

  GtkPageSetup *page_setup;

  gtk_list_store_clear (store);

  papers = _gtk_load_custom_papers ();

  for (p = papers; p; p = p->next)

    {

      page_setup = p->data;

      gtk_list_store_append (store, &iter);

      gtk_list_store_set (store, &iter,

			  0, page_setup,

			  -1);

      g_object_unref (page_setup);

    }

  g_list_free (papers);

}

void

_gtk_print_save_custom_papers (GtkListStore *store)

{

  GtkTreeModel *model = GTK_TREE_MODEL (store);

  GtkTreeIter iter;

  GKeyFile *keyfile;

  gchar *filename, *data;

  gsize len;

  gint i = 0;

  keyfile = g_key_file_new ();

  if (gtk_tree_model_get_iter_first (model, &iter))

    {

      do

	{

	  GtkPageSetup *page_setup;

	  gchar group[32];

	  g_snprintf (group, sizeof (group), "Paper%u", i);

	  gtk_tree_model_get (model, &iter, 0, &page_setup, -1);

	  gtk_page_setup_to_key_file (page_setup, keyfile, group);

	  ++i;

	} while (gtk_tree_model_iter_next (model, &iter));

    }

  filename = custom_paper_get_filename ();

  data = g_key_file_to_data (keyfile, &len, NULL);

  g_file_set_contents (filename, data, len, NULL);

  g_free (data);

  g_free (filename);

}

static void

gtk_custom_paper_unix_dialog_class_init (GtkCustomPaperUnixDialogClass *class)

{

  GObjectClass *object_class;

  GtkWidgetClass *widget_class;

  object_class = (GObjectClass *) class;

  widget_class = (GtkWidgetClass *) class;

  object_class->finalize = gtk_custom_paper_unix_dialog_finalize;

  g_type_class_add_private (class, sizeof (GtkCustomPaperUnixDialogPrivate));

}

static void

custom_paper_dialog_response_cb (GtkDialog *dialog,

				 gint       response,

				 gpointer   user_data)

{

  GtkCustomPaperUnixDialogPrivate *priv = GTK_CUSTOM_PAPER_UNIX_DIALOG (dialog)->priv;

  _gtk_print_save_custom_papers (priv->custom_paper_list);

}

static void

gtk_custom_paper_unix_dialog_init (GtkCustomPaperUnixDialog *dialog)

{

  GtkCustomPaperUnixDialogPrivate *priv;

  GtkTreeIter iter;

  priv = dialog->priv = GTK_CUSTOM_PAPER_UNIX_DIALOG_GET_PRIVATE (dialog);

  priv->print_backends = NULL;

  priv->request_details_printer = NULL;

  priv->request_details_tag = 0;

  priv->printer_list = gtk_list_store_new (PRINTER_LIST_N_COLS,

					   G_TYPE_STRING,

					   G_TYPE_OBJECT);

  gtk_list_store_append (priv->printer_list, &iter);

  priv->custom_paper_list = gtk_list_store_new (1, G_TYPE_OBJECT);

  _gtk_print_load_custom_papers (priv->custom_paper_list);

  populate_dialog (dialog);

  gtk_dialog_add_buttons (GTK_DIALOG (dialog),

                          GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE,

                          NULL);

  gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_CLOSE);

  g_signal_connect (dialog, "response", G_CALLBACK (custom_paper_dialog_response_cb), NULL);

}

static void

gtk_custom_paper_unix_dialog_finalize (GObject *object)

{

  GtkCustomPaperUnixDialog *dialog = GTK_CUSTOM_PAPER_UNIX_DIALOG (object);

  GtkCustomPaperUnixDialogPrivate *priv = dialog->priv;

  GtkPrintBackend *backend;

  GList *node;

  if (priv->printer_list)

    {

      g_signal_handler_disconnect (priv->printer_list, priv->printer_inserted_tag);

      g_signal_handler_disconnect (priv->printer_list, priv->printer_removed_tag);

      g_object_unref (priv->printer_list);

      priv->printer_list = NULL;

    }

  if (priv->request_details_tag)

    {

      g_signal_handler_disconnect (priv->request_details_printer,

				   priv->request_details_tag);

      g_object_unref (priv->request_details_printer);

      priv->request_details_printer = NULL;

      priv->request_details_tag = 0;

    }

  if (priv->custom_paper_list)

    {

      g_object_unref (priv->custom_paper_list);

      priv->custom_paper_list = NULL;

    }

  g_free (priv->waiting_for_printer);

  priv->waiting_for_printer = NULL;

  for (node = priv->print_backends; node != NULL; node = node->next)

    {

      backend = GTK_PRINT_BACKEND (node->data);

      g_signal_handlers_disconnect_by_func (backend, printer_added_cb, dialog);

      g_signal_handlers_disconnect_by_func (backend, printer_removed_cb, dialog);

      g_signal_handlers_disconnect_by_func (backend, printer_status_cb, dialog);

      gtk_print_backend_destroy (backend);

      g_object_unref (backend);

    }

  g_list_free (priv->print_backends);

  priv->print_backends = NULL;

  G_OBJECT_CLASS (gtk_custom_paper_unix_dialog_parent_class)->finalize (object);

}

/**

 * gtk_custom_paper_unix_dialog_new:

 * @title: (allow-none): the title of the dialog, or %NULL

 * @parent: (allow-none): transient parent of the dialog, or %NULL

 *

 * Creates a new custom paper dialog.

 *

 * Returns: the new #GtkCustomPaperUnixDialog

 *

 * Since: 2.18

 */

GtkWidget *

_gtk_custom_paper_unix_dialog_new (GtkWindow   *parent,

				  const gchar *title)

{

  GtkWidget *result;

  if (title == NULL)

    title = _("Manage Custom Sizes");

  result = g_object_new (GTK_TYPE_CUSTOM_PAPER_UNIX_DIALOG,

                         "title", title,

                         "transient-for", parent,

                         "modal", parent != NULL,

                         "destroy-with-parent", TRUE,

                         NULL);

  return result;

}

static void

printer_added_cb (GtkPrintBackend          *backend,

		  GtkPrinter               *printer,

		  GtkCustomPaperUnixDialog *dialog)

{

  GtkCustomPaperUnixDialogPrivate *priv = dialog->priv;

  GtkTreeIter iter;

  gchar *str;

  if (gtk_printer_is_virtual (printer))

    return;

  str = g_strdup_printf ("%s",

			 gtk_printer_get_name (printer));

  gtk_list_store_append (priv->printer_list, &iter);

  gtk_list_store_set (priv->printer_list, &iter,

                      PRINTER_LIST_COL_NAME, str,

                      PRINTER_LIST_COL_PRINTER, printer,

                      -1);

  g_object_set_data_full (G_OBJECT (printer),

			  "gtk-print-tree-iter",

                          gtk_tree_iter_copy (&iter),

                          (GDestroyNotify) gtk_tree_iter_free);

  g_free (str);

  if (priv->waiting_for_printer != NULL &&

      strcmp (priv->waiting_for_printer,

	      gtk_printer_get_name (printer)) == 0)

    {

      gtk_combo_box_set_active_iter (GTK_COMBO_BOX (priv->printer_combo),

				     &iter);

      priv->waiting_for_printer = NULL;

    }

}

static void

printer_removed_cb (GtkPrintBackend        *backend,

		    GtkPrinter             *printer,

		    GtkCustomPaperUnixDialog *dialog)

{

  GtkCustomPaperUnixDialogPrivate *priv = dialog->priv;

  GtkTreeIter *iter;

  iter = g_object_get_data (G_OBJECT (printer), "gtk-print-tree-iter");

  gtk_list_store_remove (GTK_LIST_STORE (priv->printer_list), iter);

}

static void

printer_status_cb (GtkPrintBackend        *backend,

                   GtkPrinter             *printer,

		   GtkCustomPaperUnixDialog *dialog)

{

  GtkCustomPaperUnixDialogPrivate *priv = dialog->priv;

  GtkTreeIter *iter;

  gchar *str;

  iter = g_object_get_data (G_OBJECT (printer), "gtk-print-tree-iter");

  str = g_strdup_printf ("%s",

			 gtk_printer_get_name (printer));

  gtk_list_store_set (priv->printer_list, iter,

                      PRINTER_LIST_COL_NAME, str,

                      -1);

  g_free (str);

}

static void

printer_list_initialize (GtkCustomPaperUnixDialog *dialog,

			 GtkPrintBackend        *print_backend)

{

  GList *list, *node;

  g_return_if_fail (print_backend != NULL);

  g_signal_connect_object (print_backend,

			   "printer-added",

			   (GCallback) printer_added_cb,

			   G_OBJECT (dialog), 0);

  g_signal_connect_object (print_backend,

			   "printer-removed",

			   (GCallback) printer_removed_cb,

			   G_OBJECT (dialog), 0);

  g_signal_connect_object (print_backend,

			   "printer-status-changed",

			   (GCallback) printer_status_cb,

			   G_OBJECT (dialog), 0);

  list = gtk_print_backend_get_printer_list (print_backend);

  node = list;

  while (node != NULL)

    {

      printer_added_cb (print_backend, node->data, dialog);

      node = node->next;

    }

  g_list_free (list);

}

static void

load_print_backends (GtkCustomPaperUnixDialog *dialog)

{

  GtkCustomPaperUnixDialogPrivate *priv = dialog->priv;

  GList *node;

  if (g_module_supported ())

    priv->print_backends = gtk_print_backend_load_modules ();

  for (node = priv->print_backends; node != NULL; node = node->next)

    printer_list_initialize (dialog, GTK_PRINT_BACKEND (node->data));

}

static void unit_widget_changed (GtkCustomPaperUnixDialog *dialog);

static GtkWidget *

new_unit_widget (GtkCustomPaperUnixDialog *dialog,

		 GtkUnit                   unit,

		 GtkWidget                *mnemonic_label)

{

  GtkWidget *hbox, *button, *label;

  UnitWidget *data;

  data = g_new0 (UnitWidget, 1);

  data->display_unit = unit;

  hbox = gtk_hbox_new (FALSE, 6);

  button = gtk_spin_button_new_with_range (0.0, 9999.0, 1);

  if (unit == GTK_UNIT_INCH)

    gtk_spin_button_set_digits (GTK_SPIN_BUTTON (button), 2);

  else

    gtk_spin_button_set_digits (GTK_SPIN_BUTTON (button), 1);

  gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);

  gtk_widget_show (button);

  data->spin_button = button;

  g_signal_connect_swapped (button, "value-changed",

			    G_CALLBACK (unit_widget_changed), dialog);

  if (unit == GTK_UNIT_INCH)

    label = gtk_label_new (_("inch"));

  else

    label = gtk_label_new (_("mm"));

  gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);

  gtk_widget_show (label);

  gtk_label_set_mnemonic_widget (GTK_LABEL (mnemonic_label), button);

  g_object_set_data_full (G_OBJECT (hbox), "unit-data", data, g_free);

  return hbox;

}

static double

unit_widget_get (GtkWidget *unit_widget)

{

  UnitWidget *data = g_object_get_data (G_OBJECT (unit_widget), "unit-data");

  return _gtk_print_convert_to_mm (gtk_spin_button_get_value (GTK_SPIN_BUTTON (data->spin_button)),

				   data->display_unit);

}

static void

unit_widget_set (GtkWidget *unit_widget,

		 gdouble    value)

{

  UnitWidget *data;

  data = g_object_get_data (G_OBJECT (unit_widget), "unit-data");

  gtk_spin_button_set_value (GTK_SPIN_BUTTON (data->spin_button),

			     _gtk_print_convert_from_mm (value, data->display_unit));

}

static void

custom_paper_printer_data_func (GtkCellLayout   *cell_layout,

				GtkCellRenderer *cell,

				GtkTreeModel    *tree_model,

				GtkTreeIter     *iter,

				gpointer         data)

{

  GtkPrinter *printer;

  gtk_tree_model_get (tree_model, iter,

		      PRINTER_LIST_COL_PRINTER, &printer, -1);

  if (printer)

    g_object_set (cell, "text",  gtk_printer_get_name (printer), NULL);

  else

    g_object_set (cell, "text",  _("Margins from Printer..."), NULL);

  if (printer)

    g_object_unref (printer);

}

static void

update_combo_sensitivity_from_printers (GtkCustomPaperUnixDialog *dialog)

{

  GtkCustomPaperUnixDialogPrivate *priv = dialog->priv;

  GtkTreeIter iter;

  gboolean sensitive;

  GtkTreeSelection *selection;

  GtkTreeModel *model;

  sensitive = FALSE;

  model = GTK_TREE_MODEL (priv->printer_list);

  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->treeview));

  if (gtk_tree_model_get_iter_first (model, &iter) &&

      gtk_tree_model_iter_next (model, &iter) &&

      gtk_tree_selection_get_selected (selection, NULL, &iter))

    sensitive = TRUE;

  gtk_widget_set_sensitive (priv->printer_combo, sensitive);

}

static void

update_custom_widgets_from_list (GtkCustomPaperUnixDialog *dialog)

{

  GtkCustomPaperUnixDialogPrivate *priv = dialog->priv;

  GtkTreeSelection *selection;

  GtkTreeModel *model;

  GtkTreeIter iter;

  GtkPageSetup *page_setup;

  model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->treeview));

  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->treeview));

  priv->non_user_change = TRUE;

  if (gtk_tree_selection_get_selected (selection, NULL, &iter))

    {

      gtk_tree_model_get (model, &iter, 0, &page_setup, -1);

      unit_widget_set (priv->width_widget,

		       gtk_page_setup_get_paper_width (page_setup, GTK_UNIT_MM));

      unit_widget_set (priv->height_widget,

		       gtk_page_setup_get_paper_height (page_setup, GTK_UNIT_MM));

      unit_widget_set (priv->top_widget,

		       gtk_page_setup_get_top_margin (page_setup, GTK_UNIT_MM));

      unit_widget_set (priv->bottom_widget,

		       gtk_page_setup_get_bottom_margin (page_setup, GTK_UNIT_MM));

      unit_widget_set (priv->left_widget,

		       gtk_page_setup_get_left_margin (page_setup, GTK_UNIT_MM));

      unit_widget_set (priv->right_widget,

		       gtk_page_setup_get_right_margin (page_setup, GTK_UNIT_MM));

      gtk_widget_set_sensitive (priv->values_box, TRUE);

    }

  else

    {

      gtk_widget_set_sensitive (priv->values_box, FALSE);

    }

  if (priv->printer_list)

    update_combo_sensitivity_from_printers (dialog);

  priv->non_user_change = FALSE;

}

static void

selected_custom_paper_changed (GtkTreeSelection         *selection,

			       GtkCustomPaperUnixDialog *dialog)

{

  update_custom_widgets_from_list (dialog);

}

static void

unit_widget_changed (GtkCustomPaperUnixDialog *dialog)

{

  GtkCustomPaperUnixDialogPrivate *priv = dialog->priv;

  gdouble w, h, top, bottom, left, right;

  GtkTreeSelection *selection;

  GtkTreeIter iter;

  GtkPageSetup *page_setup;

  GtkPaperSize *paper_size;

  if (priv->non_user_change)

    return;

  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->treeview));

  if (gtk_tree_selection_get_selected (selection, NULL, &iter))

    {

      gtk_tree_model_get (GTK_TREE_MODEL (priv->custom_paper_list), &iter, 0, &page_setup, -1);

      w = unit_widget_get (priv->width_widget);

      h = unit_widget_get (priv->height_widget);

      paper_size = gtk_page_setup_get_paper_size (page_setup);

      gtk_paper_size_set_size (paper_size, w, h, GTK_UNIT_MM);

      top = unit_widget_get (priv->top_widget);

      bottom = unit_widget_get (priv->bottom_widget);

      left = unit_widget_get (priv->left_widget);

      right = unit_widget_get (priv->right_widget);

      gtk_page_setup_set_top_margin (page_setup, top, GTK_UNIT_MM);

      gtk_page_setup_set_bottom_margin (page_setup, bottom, GTK_UNIT_MM);

      gtk_page_setup_set_left_margin (page_setup, left, GTK_UNIT_MM);

      gtk_page_setup_set_right_margin (page_setup, right, GTK_UNIT_MM);

      g_object_unref (page_setup);

    }

}

static gboolean

custom_paper_name_used (GtkCustomPaperUnixDialog *dialog,

			const gchar              *name)

{

  GtkCustomPaperUnixDialogPrivate *priv = dialog->priv;

  GtkTreeModel *model;

  GtkTreeIter iter;

  GtkPageSetup *page_setup;

  GtkPaperSize *paper_size;

  model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->treeview));

  if (gtk_tree_model_get_iter_first (model, &iter))

    {

      do

	{

	  gtk_tree_model_get (model, &iter, 0, &page_setup, -1);

	  paper_size = gtk_page_setup_get_paper_size (page_setup);

	  if (strcmp (name,

		      gtk_paper_size_get_name (paper_size)) == 0)

	    {

	      g_object_unref (page_setup);

	      return TRUE;

	    }

	  g_object_unref (page_setup);

	} while (gtk_tree_model_iter_next (model, &iter));

    }

  return FALSE;

}

static void

add_custom_paper (GtkCustomPaperUnixDialog *dialog)

{

  GtkCustomPaperUnixDialogPrivate *priv = dialog->priv;

  GtkListStore *store;

  GtkPageSetup *page_setup;

  GtkPaperSize *paper_size;

  GtkTreeSelection *selection;

  GtkTreePath *path;

  GtkTreeIter iter;

  gchar *name;

  gint i;

  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->treeview));

  store = priv->custom_paper_list;

  i = 1;

  name = NULL;

  do

    {

      g_free (name);

      name = g_strdup_printf (_("Custom Size %d"), i);

      i++;

    } while (custom_paper_name_used (dialog, name));

  page_setup = gtk_page_setup_new ();

  paper_size = gtk_paper_size_new_custom (name, name,

					  gtk_page_setup_get_paper_width (page_setup, GTK_UNIT_MM),

					  gtk_page_setup_get_paper_height (page_setup, GTK_UNIT_MM),

					  GTK_UNIT_MM);

  gtk_page_setup_set_paper_size (page_setup, paper_size);

  gtk_paper_size_free (paper_size);

  gtk_list_store_append (store, &iter);

  gtk_list_store_set (store, &iter, 0, page_setup, -1);

  g_object_unref (page_setup);

  gtk_tree_selection_select_iter (selection, &iter);

  path = gtk_tree_model_get_path (GTK_TREE_MODEL (store), &iter);

  gtk_widget_grab_focus (priv->treeview);

  gtk_tree_view_set_cursor (GTK_TREE_VIEW (priv->treeview), path,

			    priv->text_column, TRUE);

  gtk_tree_path_free (path);

  g_free (name);

}

static void

remove_custom_paper (GtkCustomPaperUnixDialog *dialog)

{

  GtkCustomPaperUnixDialogPrivate *priv = dialog->priv;

  GtkTreeSelection *selection;

  GtkTreeIter iter;

  GtkListStore *store;

  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->treeview));

  store = priv->custom_paper_list;

  if (gtk_tree_selection_get_selected (selection, NULL, &iter))

    {

      GtkTreePath *path = gtk_tree_model_get_path (GTK_TREE_MODEL (store), &iter);

      gtk_list_store_remove (store, &iter);

      if (gtk_tree_model_get_iter (GTK_TREE_MODEL (store), &iter, path))

	gtk_tree_selection_select_iter (selection, &iter);

      else if (gtk_tree_path_prev (path) && gtk_tree_model_get_iter (GTK_TREE_MODEL (store), &iter, path))

	gtk_tree_selection_select_iter (selection, &iter);

      gtk_tree_path_free (path);

    }

}

static void

set_margins_from_printer (GtkCustomPaperUnixDialog *dialog,

			  GtkPrinter               *printer)

{

  GtkCustomPaperUnixDialogPrivate *priv = dialog->priv;

  gdouble top, bottom, left, right;

  top = bottom = left = right = 0;

  if (!gtk_printer_get_hard_margins (printer, &top, &bottom, &left, &right))

    return;

  priv->non_user_change = TRUE;

  unit_widget_set (priv->top_widget, _gtk_print_convert_to_mm (top, GTK_UNIT_POINTS));

  unit_widget_set (priv->bottom_widget, _gtk_print_convert_to_mm (bottom, GTK_UNIT_POINTS));

  unit_widget_set (priv->left_widget, _gtk_print_convert_to_mm (left, GTK_UNIT_POINTS));

  unit_widget_set (priv->right_widget, _gtk_print_convert_to_mm (right, GTK_UNIT_POINTS));

  priv->non_user_change = FALSE;

  /* Only send one change */

  unit_widget_changed (dialog);

}

static void

get_margins_finished_callback (GtkPrinter               *printer,

			       gboolean                  success,

			       GtkCustomPaperUnixDialog *dialog)

{

  GtkCustomPaperUnixDialogPrivate *priv = dialog->priv;

  g_signal_handler_disconnect (priv->request_details_printer,

			       priv->request_details_tag);

  g_object_unref (priv->request_details_printer);

  priv->request_details_tag = 0;

  priv->request_details_printer = NULL;

  if (success)

    set_margins_from_printer (dialog, printer);

  gtk_combo_box_set_active (GTK_COMBO_BOX (priv->printer_combo), 0);

}

static void

margins_from_printer_changed (GtkCustomPaperUnixDialog *dialog)

{

  GtkCustomPaperUnixDialogPrivate *priv = dialog->priv;

  GtkTreeIter iter;

  GtkComboBox *combo;

  GtkPrinter *printer;

  combo = GTK_COMBO_BOX (priv->printer_combo);

  if (priv->request_details_tag)

    {

      g_signal_handler_disconnect (priv->request_details_printer,

				   priv->request_details_tag);

      g_object_unref (priv->request_details_printer);

      priv->request_details_printer = NULL;

      priv->request_details_tag = 0;

    }

  if (gtk_combo_box_get_active_iter (combo, &iter))

    {

      gtk_tree_model_get (gtk_combo_box_get_model (combo), &iter,

			  PRINTER_LIST_COL_PRINTER, &printer, -1);

      if (printer)

	{

	  if (gtk_printer_has_details (printer))

	    {

	      set_margins_from_printer (dialog, printer);

	      gtk_combo_box_set_active (combo, 0);

	    }

	  else

	    {

	      priv->request_details_printer = g_object_ref (printer);

	      priv->request_details_tag =

		g_signal_connect (printer, "details-acquired",

				  G_CALLBACK (get_margins_finished_callback), dialog);

	      gtk_printer_request_details (printer);

	    }

	  g_object_unref (printer);

	}

    }

}