/* gtkliststore.c

 * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>

 *

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

 * modify it under the terms of the GNU Library 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

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library 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 <errno.h>

#include <stdlib.h>

#include <string.h>

#include <gobject/gvaluecollector.h>

#include "gtktreemodel.h"

#include "gtkliststore.h"

#include "gtktreedatalist.h"

#include "gtktreednd.h"

#include "gtkintl.h"

#include "gtkbuildable.h"

#include "gtkbuilderprivate.h"

#include "gtkalias.h"

#define GTK_LIST_STORE_IS_SORTED(list) (((GtkListStore*)(list))->sort_column_id != GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID)

#define VALID_ITER(iter, list_store) ((iter)!= NULL && (iter)->user_data != NULL && list_store->stamp == (iter)->stamp && !g_sequence_iter_is_end ((iter)->user_data) && g_sequence_iter_get_sequence ((iter)->user_data) == list_store->seq)

static void         gtk_list_store_tree_model_init (GtkTreeModelIface *iface);

static void         gtk_list_store_drag_source_init(GtkTreeDragSourceIface *iface);

static void         gtk_list_store_drag_dest_init  (GtkTreeDragDestIface   *iface);

static void         gtk_list_store_sortable_init   (GtkTreeSortableIface   *iface);

static void         gtk_list_store_buildable_init  (GtkBuildableIface      *iface);

static void         gtk_list_store_finalize        (GObject           *object);

static GtkTreeModelFlags gtk_list_store_get_flags  (GtkTreeModel      *tree_model);

static gint         gtk_list_store_get_n_columns   (GtkTreeModel      *tree_model);

static GType        gtk_list_store_get_column_type (GtkTreeModel      *tree_model,

						    gint               index);

static gboolean     gtk_list_store_get_iter        (GtkTreeModel      *tree_model,

						    GtkTreeIter       *iter,

						    GtkTreePath       *path);

static GtkTreePath *gtk_list_store_get_path        (GtkTreeModel      *tree_model,

						    GtkTreeIter       *iter);

static void         gtk_list_store_get_value       (GtkTreeModel      *tree_model,

						    GtkTreeIter       *iter,

						    gint               column,

						    GValue            *value);

static gboolean     gtk_list_store_iter_next       (GtkTreeModel      *tree_model,

						    GtkTreeIter       *iter);

static gboolean     gtk_list_store_iter_children   (GtkTreeModel      *tree_model,

						    GtkTreeIter       *iter,

						    GtkTreeIter       *parent);

static gboolean     gtk_list_store_iter_has_child  (GtkTreeModel      *tree_model,

						    GtkTreeIter       *iter);

static gint         gtk_list_store_iter_n_children (GtkTreeModel      *tree_model,

						    GtkTreeIter       *iter);

static gboolean     gtk_list_store_iter_nth_child  (GtkTreeModel      *tree_model,

						    GtkTreeIter       *iter,

						    GtkTreeIter       *parent,

						    gint               n);

static gboolean     gtk_list_store_iter_parent     (GtkTreeModel      *tree_model,

						    GtkTreeIter       *iter,

						    GtkTreeIter       *child);

static void gtk_list_store_set_n_columns   (GtkListStore *list_store,

					    gint          n_columns);

static void gtk_list_store_set_column_type (GtkListStore *list_store,

					    gint          column,

					    GType         type);

static void gtk_list_store_increment_stamp (GtkListStore *list_store);

/* Drag and Drop */

static gboolean real_gtk_list_store_row_draggable (GtkTreeDragSource *drag_source,

                                                   GtkTreePath       *path);

static gboolean gtk_list_store_drag_data_delete   (GtkTreeDragSource *drag_source,

                                                   GtkTreePath       *path);

static gboolean gtk_list_store_drag_data_get      (GtkTreeDragSource *drag_source,

                                                   GtkTreePath       *path,

                                                   GtkSelectionData  *selection_data);

static gboolean gtk_list_store_drag_data_received (GtkTreeDragDest   *drag_dest,

                                                   GtkTreePath       *dest,

                                                   GtkSelectionData  *selection_data);

static gboolean gtk_list_store_row_drop_possible  (GtkTreeDragDest   *drag_dest,

                                                   GtkTreePath       *dest_path,

						   GtkSelectionData  *selection_data);

/* sortable */

static void     gtk_list_store_sort                  (GtkListStore           *list_store);

static void     gtk_list_store_sort_iter_changed     (GtkListStore           *list_store,

						      GtkTreeIter            *iter,

						      gint                    column);

static gboolean gtk_list_store_get_sort_column_id    (GtkTreeSortable        *sortable,

						      gint                   *sort_column_id,

						      GtkSortType            *order);

static void     gtk_list_store_set_sort_column_id    (GtkTreeSortable        *sortable,

						      gint                    sort_column_id,

						      GtkSortType             order);

static void     gtk_list_store_set_sort_func         (GtkTreeSortable        *sortable,

						      gint                    sort_column_id,

						      GtkTreeIterCompareFunc  func,

						      gpointer                data,

						      GDestroyNotify          destroy);

static void     gtk_list_store_set_default_sort_func (GtkTreeSortable        *sortable,

						      GtkTreeIterCompareFunc  func,

						      gpointer                data,

						      GDestroyNotify          destroy);

static gboolean gtk_list_store_has_default_sort_func (GtkTreeSortable        *sortable);

/* buildable */

static gboolean gtk_list_store_buildable_custom_tag_start (GtkBuildable  *buildable,

							   GtkBuilder    *builder,

							   GObject       *child,

							   const gchar   *tagname,

							   GMarkupParser *parser,

							   gpointer      *data);

static void     gtk_list_store_buildable_custom_tag_end (GtkBuildable *buildable,

							 GtkBuilder   *builder,

							 GObject      *child,

							 const gchar  *tagname,

							 gpointer     *data);

G_DEFINE_TYPE_WITH_CODE (GtkListStore, gtk_list_store, G_TYPE_OBJECT,

			 G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_MODEL,

						gtk_list_store_tree_model_init)

			 G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_DRAG_SOURCE,

						gtk_list_store_drag_source_init)

			 G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_DRAG_DEST,

						gtk_list_store_drag_dest_init)

			 G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_SORTABLE,

						gtk_list_store_sortable_init)

			 G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,

						gtk_list_store_buildable_init))

static void

gtk_list_store_class_init (GtkListStoreClass *class)

{

  GObjectClass *object_class;

  object_class = (GObjectClass*) class;

  object_class->finalize = gtk_list_store_finalize;

}

static void

gtk_list_store_tree_model_init (GtkTreeModelIface *iface)

{

  iface->get_flags = gtk_list_store_get_flags;

  iface->get_n_columns = gtk_list_store_get_n_columns;

  iface->get_column_type = gtk_list_store_get_column_type;

  iface->get_iter = gtk_list_store_get_iter;

  iface->get_path = gtk_list_store_get_path;

  iface->get_value = gtk_list_store_get_value;

  iface->iter_next = gtk_list_store_iter_next;

  iface->iter_children = gtk_list_store_iter_children;

  iface->iter_has_child = gtk_list_store_iter_has_child;

  iface->iter_n_children = gtk_list_store_iter_n_children;

  iface->iter_nth_child = gtk_list_store_iter_nth_child;

  iface->iter_parent = gtk_list_store_iter_parent;

}

static void

gtk_list_store_drag_source_init (GtkTreeDragSourceIface *iface)

{

  iface->row_draggable = real_gtk_list_store_row_draggable;

  iface->drag_data_delete = gtk_list_store_drag_data_delete;

  iface->drag_data_get = gtk_list_store_drag_data_get;

}

static void

gtk_list_store_drag_dest_init (GtkTreeDragDestIface *iface)

{

  iface->drag_data_received = gtk_list_store_drag_data_received;

  iface->row_drop_possible = gtk_list_store_row_drop_possible;

}

static void

gtk_list_store_sortable_init (GtkTreeSortableIface *iface)

{

  iface->get_sort_column_id = gtk_list_store_get_sort_column_id;

  iface->set_sort_column_id = gtk_list_store_set_sort_column_id;

  iface->set_sort_func = gtk_list_store_set_sort_func;

  iface->set_default_sort_func = gtk_list_store_set_default_sort_func;

  iface->has_default_sort_func = gtk_list_store_has_default_sort_func;

}

void

gtk_list_store_buildable_init (GtkBuildableIface *iface)

{

  iface->custom_tag_start = gtk_list_store_buildable_custom_tag_start;

  iface->custom_tag_end = gtk_list_store_buildable_custom_tag_end;

}

static void

gtk_list_store_init (GtkListStore *list_store)

{

  list_store->seq = g_sequence_new (NULL);

  list_store->sort_list = NULL;

  list_store->stamp = g_random_int ();

  list_store->sort_column_id = GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID;

  list_store->columns_dirty = FALSE;

  list_store->length = 0;

}

/**

 * gtk_list_store_new:

 * @n_columns: number of columns in the list store

 * @Varargs: all #GType types for the columns, from first to last

 *

 * Creates a new list store as with @n_columns columns each of the types passed

 * in.  Note that only types derived from standard GObject fundamental types 

 * are supported. 

 *

 * As an example, <literal>gtk_tree_store_new (3, G_TYPE_INT, G_TYPE_STRING,

 * GDK_TYPE_PIXBUF);</literal> will create a new #GtkListStore with three columns, of type

 * int, string and #GdkPixbuf respectively.

 *

 * Return value: a new #GtkListStore

 **/

GtkListStore *

gtk_list_store_new (gint n_columns,

		    ...)

{

  GtkListStore *retval;

  va_list args;

  gint i;

  g_return_val_if_fail (n_columns > 0, NULL);

  retval = g_object_new (GTK_TYPE_LIST_STORE, NULL);

  gtk_list_store_set_n_columns (retval, n_columns);

  va_start (args, n_columns);

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

    {

      GType type = va_arg (args, GType);

      if (! _gtk_tree_data_list_check_type (type))

	{

	  g_warning ("%s: Invalid type %s\n", G_STRLOC, g_type_name (type));

	  g_object_unref (retval);

	  return NULL;

	}

      gtk_list_store_set_column_type (retval, i, type);

    }

  va_end (args);

  return retval;

}

/**

 * gtk_list_store_newv:

 * @n_columns: number of columns in the list store

 * @types: (array length=n_columns): an array of #GType types for the columns, from first to last

 *

 * Non-vararg creation function.  Used primarily by language bindings.

 *

 * Return value: (transfer none): a new #GtkListStore

 **/

GtkListStore *

gtk_list_store_newv (gint   n_columns,

		     GType *types)

{

  GtkListStore *retval;

  gint i;

  g_return_val_if_fail (n_columns > 0, NULL);

  retval = g_object_new (GTK_TYPE_LIST_STORE, NULL);

  gtk_list_store_set_n_columns (retval, n_columns);

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

    {

      if (! _gtk_tree_data_list_check_type (types[i]))

	{

	  g_warning ("%s: Invalid type %s\n", G_STRLOC, g_type_name (types[i]));

	  g_object_unref (retval);

	  return NULL;

	}

      gtk_list_store_set_column_type (retval, i, types[i]);

    }

  return retval;

}

/**

 * gtk_list_store_set_column_types:

 * @list_store: A #GtkListStore

 * @n_columns: Number of columns for the list store

 * @types: (array length=n_columns): An array length n of #GTypes

 *

 * This function is meant primarily for #GObjects that inherit from #GtkListStore,

 * and should only be used when constructing a new #GtkListStore.  It will not

 * function after a row has been added, or a method on the #GtkTreeModel

 * interface is called.

 **/

void

gtk_list_store_set_column_types (GtkListStore *list_store,

				 gint          n_columns,

				 GType        *types)

{

  gint i;

  g_return_if_fail (GTK_IS_LIST_STORE (list_store));

  g_return_if_fail (list_store->columns_dirty == 0);

  gtk_list_store_set_n_columns (list_store, n_columns);

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

    {

      if (! _gtk_tree_data_list_check_type (types[i]))

	{

	  g_warning ("%s: Invalid type %s\n", G_STRLOC, g_type_name (types[i]));

	  continue;

	}

      gtk_list_store_set_column_type (list_store, i, types[i]);

    }

}

static void

gtk_list_store_set_n_columns (GtkListStore *list_store,

			      gint          n_columns)

{

  int i;

  if (list_store->n_columns == n_columns)

    return;

  list_store->column_headers = g_renew (GType, list_store->column_headers, n_columns);

  for (i = list_store->n_columns; i < n_columns; i++)

    list_store->column_headers[i] = G_TYPE_INVALID;

  list_store->n_columns = n_columns;

  if (list_store->sort_list)

    _gtk_tree_data_list_header_free (list_store->sort_list);

  list_store->sort_list = _gtk_tree_data_list_header_new (n_columns, list_store->column_headers);

}

static void

gtk_list_store_set_column_type (GtkListStore *list_store,

				gint          column,

				GType         type)

{

  if (!_gtk_tree_data_list_check_type (type))

    {

      g_warning ("%s: Invalid type %s\n", G_STRLOC, g_type_name (type));

      return;

    }

  list_store->column_headers[column] = type;

}

static void

gtk_list_store_finalize (GObject *object)

{

  GtkListStore *list_store = GTK_LIST_STORE (object);

  g_sequence_foreach (list_store->seq,

		      (GFunc) _gtk_tree_data_list_free, list_store->column_headers);

  g_sequence_free (list_store->seq);

  _gtk_tree_data_list_header_free (list_store->sort_list);

  g_free (list_store->column_headers);

  if (list_store->default_sort_destroy)

    {

      GDestroyNotify d = list_store->default_sort_destroy;

      list_store->default_sort_destroy = NULL;

      d (list_store->default_sort_data);

      list_store->default_sort_data = NULL;

    }

  G_OBJECT_CLASS (gtk_list_store_parent_class)->finalize (object);

}

/* Fulfill the GtkTreeModel requirements */

static GtkTreeModelFlags

gtk_list_store_get_flags (GtkTreeModel *tree_model)

{

  return GTK_TREE_MODEL_ITERS_PERSIST | GTK_TREE_MODEL_LIST_ONLY;

}

static gint

gtk_list_store_get_n_columns (GtkTreeModel *tree_model)

{

  GtkListStore *list_store = (GtkListStore *) tree_model;

  list_store->columns_dirty = TRUE;

  return list_store->n_columns;

}

static GType

gtk_list_store_get_column_type (GtkTreeModel *tree_model,

				gint          index)

{

  GtkListStore *list_store = (GtkListStore *) tree_model;

  g_return_val_if_fail (index < GTK_LIST_STORE (tree_model)->n_columns, 

			G_TYPE_INVALID);

  list_store->columns_dirty = TRUE;

  return list_store->column_headers[index];

}

static gboolean

gtk_list_store_get_iter (GtkTreeModel *tree_model,

			 GtkTreeIter  *iter,

			 GtkTreePath  *path)

{

  GtkListStore *list_store = (GtkListStore *) tree_model;

  GSequence *seq;

  gint i;

  list_store->columns_dirty = TRUE;

  seq = list_store->seq;

  i = gtk_tree_path_get_indices (path)[0];

  if (i >= g_sequence_get_length (seq))

    return FALSE;

  iter->stamp = list_store->stamp;

  iter->user_data = g_sequence_get_iter_at_pos (seq, i);

  return TRUE;

}

static GtkTreePath *

gtk_list_store_get_path (GtkTreeModel *tree_model,

			 GtkTreeIter  *iter)

{

  GtkTreePath *path;

  g_return_val_if_fail (iter->stamp == GTK_LIST_STORE (tree_model)->stamp, NULL);

  if (g_sequence_iter_is_end (iter->user_data))

    return NULL;

  path = gtk_tree_path_new ();

  gtk_tree_path_append_index (path, g_sequence_iter_get_position (iter->user_data));

  return path;

}

static void

gtk_list_store_get_value (GtkTreeModel *tree_model,

			  GtkTreeIter  *iter,

			  gint          column,

			  GValue       *value)

{

  GtkListStore *list_store = (GtkListStore *) tree_model;

  GtkTreeDataList *list;

  gint tmp_column = column;

  g_return_if_fail (column < list_store->n_columns);

  g_return_if_fail (VALID_ITER (iter, list_store));

  list = g_sequence_get (iter->user_data);

  while (tmp_column-- > 0 && list)

    list = list->next;

  if (list == NULL)

    g_value_init (value, list_store->column_headers[column]);

  else

    _gtk_tree_data_list_node_to_value (list,

				       list_store->column_headers[column],

				       value);

}

static gboolean

gtk_list_store_iter_next (GtkTreeModel  *tree_model,

			  GtkTreeIter   *iter)

{

  gboolean retval;

  g_return_val_if_fail (GTK_LIST_STORE (tree_model)->stamp == iter->stamp, FALSE);

  iter->user_data = g_sequence_iter_next (iter->user_data);

  retval = g_sequence_iter_is_end (iter->user_data);

  if (retval)

    iter->stamp = 0;

  return !retval;

}

static gboolean

gtk_list_store_iter_children (GtkTreeModel *tree_model,

			      GtkTreeIter  *iter,

			      GtkTreeIter  *parent)

{

  GtkListStore *list_store = (GtkListStore *) tree_model;

  /* this is a list, nodes have no children */

  if (parent)

    {

      iter->stamp = 0;

      return FALSE;

    }

  if (g_sequence_get_length (list_store->seq) > 0)

    {

      iter->stamp = list_store->stamp;

      iter->user_data = g_sequence_get_begin_iter (list_store->seq);

      return TRUE;

    }

  else

    {

      iter->stamp = 0;

      return FALSE;

    }

}

static gboolean

gtk_list_store_iter_has_child (GtkTreeModel *tree_model,

			       GtkTreeIter  *iter)

{

  return FALSE;

}

static gint

gtk_list_store_iter_n_children (GtkTreeModel *tree_model,

				GtkTreeIter  *iter)

{

  GtkListStore *list_store = (GtkListStore *) tree_model;

  if (iter == NULL)

    return g_sequence_get_length (list_store->seq);

  g_return_val_if_fail (list_store->stamp == iter->stamp, -1);

  return 0;

}

static gboolean

gtk_list_store_iter_nth_child (GtkTreeModel *tree_model,

			       GtkTreeIter  *iter,

			       GtkTreeIter  *parent,

			       gint          n)

{

  GtkListStore *list_store = (GtkListStore *) tree_model;

  GSequenceIter *child;

  iter->stamp = 0;

  if (parent)

    return FALSE;

  child = g_sequence_get_iter_at_pos (list_store->seq, n);

  if (g_sequence_iter_is_end (child))

    return FALSE;

  iter->stamp = list_store->stamp;

  iter->user_data = child;

  return TRUE;

}

static gboolean

gtk_list_store_iter_parent (GtkTreeModel *tree_model,

			    GtkTreeIter  *iter,

			    GtkTreeIter  *child)

{

  iter->stamp = 0;

  return FALSE;

}

static gboolean

gtk_list_store_real_set_value (GtkListStore *list_store,

			       GtkTreeIter  *iter,

			       gint          column,

			       GValue       *value,

			       gboolean      sort)

{

  GtkTreeDataList *list;

  GtkTreeDataList *prev;

  gint old_column = column;

  GValue real_value = {0, };

  gboolean converted = FALSE;

  gboolean retval = FALSE;

  if (! g_type_is_a (G_VALUE_TYPE (value), list_store->column_headers[column]))

    {

      if (! (g_value_type_compatible (G_VALUE_TYPE (value), list_store->column_headers[column]) &&

	     g_value_type_compatible (list_store->column_headers[column], G_VALUE_TYPE (value))))

	{

	  g_warning ("%s: Unable to convert from %s to %s\n",

		     G_STRLOC,

		     g_type_name (G_VALUE_TYPE (value)),

		     g_type_name (list_store->column_headers[column]));

	  return retval;

	}

      if (!g_value_transform (value, &real_value))

	{

	  g_warning ("%s: Unable to make conversion from %s to %s\n",

		     G_STRLOC,

		     g_type_name (G_VALUE_TYPE (value)),

		     g_type_name (list_store->column_headers[column]));

	  g_value_unset (&real_value);

	  return retval;

	}

      converted = TRUE;

    }

  prev = list = g_sequence_get (iter->user_data);

  while (list != NULL)

    {

      if (column == 0)

	{

	  if (converted)

	    _gtk_tree_data_list_value_to_node (list, &real_value);

	  else

	    _gtk_tree_data_list_value_to_node (list, value);

	  retval = TRUE;

	  if (converted)

	    g_value_unset (&real_value);

         if (sort && GTK_LIST_STORE_IS_SORTED (list_store))

            gtk_list_store_sort_iter_changed (list_store, iter, old_column);

	  return retval;

	}

      column--;

      prev = list;

      list = list->next;

    }

  if (g_sequence_get (iter->user_data) == NULL)

    {

      list = _gtk_tree_data_list_alloc();

      g_sequence_set (iter->user_data, list);

      list->next = NULL;

    }

  else

    {

      list = prev->next = _gtk_tree_data_list_alloc ();

      list->next = NULL;

    }

  while (column != 0)

    {

      list->next = _gtk_tree_data_list_alloc ();

      list = list->next;

      list->next = NULL;

      column --;

    }

  if (converted)

    _gtk_tree_data_list_value_to_node (list, &real_value);

  else

    _gtk_tree_data_list_value_to_node (list, value);

  retval = TRUE;

  if (converted)

    g_value_unset (&real_value);

  if (sort && GTK_LIST_STORE_IS_SORTED (list_store))

    gtk_list_store_sort_iter_changed (list_store, iter, old_column);

  return retval;

}

/**

 * gtk_list_store_set_value:

 * @list_store: A #GtkListStore

 * @iter: A valid #GtkTreeIter for the row being modified

 * @column: column number to modify

 * @value: new value for the cell

 *

 * Sets the data in the cell specified by @iter and @column.

 * The type of @value must be convertible to the type of the

 * column.

 *

 **/

void

gtk_list_store_set_value (GtkListStore *list_store,

			  GtkTreeIter  *iter,

			  gint          column,

			  GValue       *value)

{

  g_return_if_fail (GTK_IS_LIST_STORE (list_store));

  g_return_if_fail (VALID_ITER (iter, list_store));

  g_return_if_fail (column >= 0 && column < list_store->n_columns);

  g_return_if_fail (G_IS_VALUE (value));

  if (gtk_list_store_real_set_value (list_store, iter, column, value, TRUE))

    {

      GtkTreePath *path;

      path = gtk_list_store_get_path (GTK_TREE_MODEL (list_store), iter);

      gtk_tree_model_row_changed (GTK_TREE_MODEL (list_store), path, iter);

      gtk_tree_path_free (path);

    }

}

static GtkTreeIterCompareFunc

gtk_list_store_get_compare_func (GtkListStore *list_store)

{

  GtkTreeIterCompareFunc func = NULL;

  if (GTK_LIST_STORE_IS_SORTED (list_store))

    {

      if (list_store->sort_column_id != -1)

	{

	  GtkTreeDataSortHeader *header;

	  header = _gtk_tree_data_list_get_header (list_store->sort_list,

						   list_store->sort_column_id);

	  g_return_val_if_fail (header != NULL, NULL);

	  g_return_val_if_fail (header->func != NULL, NULL);

	  func = header->func;

	}

      else

	{

	  func = list_store->default_sort_func;

	}

    }

  return func;

}

static void

gtk_list_store_set_vector_internal (GtkListStore *list_store,

				    GtkTreeIter  *iter,

				    gboolean     *emit_signal,

				    gboolean     *maybe_need_sort,

				    gint         *columns,

				    GValue       *values,

				    gint          n_values)

{

  gint i;

  GtkTreeIterCompareFunc func = NULL;

  func = gtk_list_store_get_compare_func (list_store);

  if (func != _gtk_tree_data_list_compare_func)

    *maybe_need_sort = TRUE;

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

    {

      *emit_signal = gtk_list_store_real_set_value (list_store, 

					       iter, 

					       columns[i],

					       &values[i],

					       FALSE) || *emit_signal;

      if (func == _gtk_tree_data_list_compare_func &&

	  columns[i] == list_store->sort_column_id)

	*maybe_need_sort = TRUE;

    }

}

static void

gtk_list_store_set_valist_internal (GtkListStore *list_store,

				    GtkTreeIter  *iter,

				    gboolean     *emit_signal,

				    gboolean     *maybe_need_sort,

				    va_list	  var_args)

{

  gint column;

  GtkTreeIterCompareFunc func = NULL;

  column = va_arg (var_args, gint);

  func = gtk_list_store_get_compare_func (list_store);

  if (func != _gtk_tree_data_list_compare_func)

    *maybe_need_sort = TRUE;

  while (column != -1)

    {

      GValue value = { 0, };

      gchar *error = NULL;

      if (column < 0 || column >= list_store->n_columns)

	{

	  g_warning ("%s: Invalid column number %d added to iter (remember to end your list of columns with a -1)", G_STRLOC, column);

	  break;

	}

      g_value_init (&value, list_store->column_headers[column]);

      G_VALUE_COLLECT (&value, var_args, 0, &error);

      if (error)

	{

	  g_warning ("%s: %s", G_STRLOC, error);

	  g_free (error);

 	  /* we purposely leak the value here, it might not be

	   * in a sane state if an error condition occoured

	   */

	  break;

	}

      /* FIXME: instead of calling this n times, refactor with above */

      *emit_signal = gtk_list_store_real_set_value (list_store,

						    iter,

						    column,

						    &value,

						    FALSE) || *emit_signal;

      if (func == _gtk_tree_data_list_compare_func &&

	  column == list_store->sort_column_id)

	*maybe_need_sort = TRUE;

      g_value_unset (&value);

      column = va_arg (var_args, gint);

    }

}

/**

 * gtk_list_store_set_valuesv:

 * @list_store: A #GtkListStore

 * @iter: A valid #GtkTreeIter for the row being modified

 * @columns: (array length=n_values): an array of column numbers

 * @values: (array length=n_values): an array of GValues

 * @n_values: the length of the @columns and @values arrays

 *

 * A variant of gtk_list_store_set_valist() which

 * takes the columns and values as two arrays, instead of

 * varargs. This function is mainly intended for 

 * language-bindings and in case the number of columns to

 * change is not known until run-time.

 *

 * Since: 2.12

 */

void

gtk_list_store_set_valuesv (GtkListStore *list_store,

			    GtkTreeIter  *iter,

			    gint         *columns,

			    GValue       *values,

			    gint          n_values)

{

  gboolean emit_signal = FALSE;

  gboolean maybe_need_sort = FALSE;

  g_return_if_fail (GTK_IS_LIST_STORE (list_store));

  g_return_if_fail (VALID_ITER (iter, list_store));

  gtk_list_store_set_vector_internal (list_store, iter,

				      &emit_signal,

				      &maybe_need_sort,

				      columns, values, n_values);

  if (maybe_need_sort && GTK_LIST_STORE_IS_SORTED (list_store))

    gtk_list_store_sort_iter_changed (list_store, iter, list_store->sort_column_id);

  if (emit_signal)

    {

      GtkTreePath *path;

      path = gtk_list_store_get_path (GTK_TREE_MODEL (list_store), iter);

      gtk_tree_model_row_changed (GTK_TREE_MODEL (list_store), path, iter);

      gtk_tree_path_free (path);

    }

}

/**

 * gtk_list_store_set_valist:

 * @list_store: A #GtkListStore