gtktreedatalist.c 13.1 KB
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/* gtktreedatalist.c
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 * 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.
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 * 
 * This file contains code shared between GtkTreeStore and GtkListStore.  Please
 * do not use it.
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 */

#include "gtktreedatalist.h"
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#include <string.h>
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static GMemChunk *tree_chunk = NULL;
#define TREE_CHUNK_PREALLOCS 64

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/* node allocation
 */
GtkTreeDataList *
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_gtk_tree_data_list_alloc (void)
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{
  GtkTreeDataList *list;

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  if (tree_chunk == NULL)
    tree_chunk = g_mem_chunk_new ("treedatalist mem chunk",
				  sizeof (GtkTreeDataList),
				  sizeof (GtkTreeDataList) * TREE_CHUNK_PREALLOCS,
				  G_ALLOC_AND_FREE);

  list = g_chunk_new (GtkTreeDataList, tree_chunk);
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  memset (list, 0, sizeof (GtkTreeDataList));
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  return list;
}

void
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_gtk_tree_data_list_free (GtkTreeDataList *list,
			  GType           *column_headers)
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{
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  GtkTreeDataList *tmp, *next;
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  gint i = 0;

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  tmp = list;

  while (tmp)
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    {
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      next = tmp->next;
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      if (g_type_is_a (column_headers [i], G_TYPE_STRING))
	g_free ((gchar *) tmp->data.v_pointer);
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      else if (g_type_is_a (column_headers [i], G_TYPE_OBJECT) && tmp->data.v_pointer != NULL)
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	g_object_unref (tmp->data.v_pointer);
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      else if (g_type_is_a (column_headers [i], G_TYPE_BOXED) && tmp->data.v_pointer != NULL)
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	g_boxed_free (column_headers [i], (gpointer) tmp->data.v_pointer);
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      g_mem_chunk_free (tree_chunk, tmp);
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      i++;
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      tmp = next;
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    }
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}

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gboolean
_gtk_tree_data_list_check_type (GType type)
{
  gint i = 0;
  static GType type_list[] =
  {
    G_TYPE_BOOLEAN,
    G_TYPE_CHAR,
    G_TYPE_UCHAR,
    G_TYPE_INT,
    G_TYPE_UINT,
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    G_TYPE_LONG,
    G_TYPE_ULONG,
    G_TYPE_INT64,
    G_TYPE_UINT64,
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    G_TYPE_ENUM,
    G_TYPE_FLAGS,
    G_TYPE_FLOAT,
    G_TYPE_DOUBLE,
    G_TYPE_STRING,
    G_TYPE_POINTER,
    G_TYPE_BOXED,
    G_TYPE_OBJECT,
    G_TYPE_INVALID
  };

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  if (! G_TYPE_IS_VALUE_TYPE (type))
    return FALSE;


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  while (type_list[i] != G_TYPE_INVALID)
    {
      if (g_type_is_a (type, type_list[i]))
	return TRUE;
      i++;
    }
  return FALSE;
}

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void
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_gtk_tree_data_list_node_to_value (GtkTreeDataList *list,
				   GType            type,
				   GValue          *value)
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{
  g_value_init (value, type);

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  switch (G_TYPE_FUNDAMENTAL (type))
    {
    case G_TYPE_BOOLEAN:
      g_value_set_boolean (value, (gboolean) list->data.v_int);
      break;
    case G_TYPE_CHAR:
      g_value_set_char (value, (gchar) list->data.v_char);
      break;
    case G_TYPE_UCHAR:
      g_value_set_uchar (value, (guchar) list->data.v_uchar);
      break;
    case G_TYPE_INT:
      g_value_set_int (value, (gint) list->data.v_int);
      break;
    case G_TYPE_UINT:
      g_value_set_uint (value, (guint) list->data.v_uint);
      break;
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    case G_TYPE_LONG:
      g_value_set_long (value, list->data.v_long);
      break;
    case G_TYPE_ULONG:
      g_value_set_ulong (value, list->data.v_ulong);
      break;
    case G_TYPE_INT64:
      g_value_set_int64 (value, list->data.v_int64);
      break;
    case G_TYPE_UINT64:
      g_value_set_uint64 (value, list->data.v_uint64);
      break;
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    case G_TYPE_ENUM:
      g_value_set_enum (value, list->data.v_int);
      break;
    case G_TYPE_FLAGS:
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      g_value_set_flags (value, list->data.v_uint);
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      break;
    case G_TYPE_FLOAT:
      g_value_set_float (value, (gfloat) list->data.v_float);
      break;
    case G_TYPE_DOUBLE:
      g_value_set_double (value, (gdouble) list->data.v_double);
      break;
    case G_TYPE_STRING:
      g_value_set_string (value, (gchar *) list->data.v_pointer);
      break;
    case G_TYPE_POINTER:
      g_value_set_pointer (value, (gpointer) list->data.v_pointer);
      break;
    case G_TYPE_BOXED:
      g_value_set_boxed (value, (gpointer) list->data.v_pointer);
      break;
    case G_TYPE_OBJECT:
      g_value_set_object (value, (GObject *) list->data.v_pointer);
      break;
    default:
      g_warning ("%s: Unsupported type (%s) retrieved.", G_STRLOC, g_type_name (value->g_type));
      break;
    }
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}

void
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_gtk_tree_data_list_value_to_node (GtkTreeDataList *list,
				   GValue          *value)
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{
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  switch (G_TYPE_FUNDAMENTAL (G_VALUE_TYPE (value)))
    {
    case G_TYPE_BOOLEAN:
      list->data.v_int = g_value_get_boolean (value);
      break;
    case G_TYPE_CHAR:
      list->data.v_char = g_value_get_char (value);
      break;
    case G_TYPE_UCHAR:
      list->data.v_uchar = g_value_get_uchar (value);
      break;
    case G_TYPE_INT:
      list->data.v_int = g_value_get_int (value);
      break;
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    case G_TYPE_UINT:
      list->data.v_uint = g_value_get_uint (value);
      break;
    case G_TYPE_LONG:
      list->data.v_long = g_value_get_long (value);
      break;
    case G_TYPE_ULONG:
      list->data.v_ulong = g_value_get_ulong (value);
      break;
    case G_TYPE_INT64:
      list->data.v_int64 = g_value_get_int64 (value);
      break;
    case G_TYPE_UINT64:
      list->data.v_uint64 = g_value_get_uint64 (value);
      break;
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    case G_TYPE_ENUM:
      list->data.v_int = g_value_get_enum (value);
      break;
    case G_TYPE_FLAGS:
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      list->data.v_uint = g_value_get_flags (value);
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      break;
    case G_TYPE_POINTER:
      list->data.v_pointer = g_value_get_pointer (value);
      break;
    case G_TYPE_FLOAT:
      list->data.v_float = g_value_get_float (value);
      break;
    case G_TYPE_DOUBLE:
      list->data.v_double = g_value_get_double (value);
      break;
    case G_TYPE_STRING:
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      if (list->data.v_pointer)
	g_free (list->data.v_pointer);
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      list->data.v_pointer = g_value_dup_string (value);
      break;
    case G_TYPE_OBJECT:
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      if (list->data.v_pointer)
	g_object_unref (list->data.v_pointer);
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      list->data.v_pointer = g_value_dup_object (value);
      break;
    case G_TYPE_BOXED:
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      if (list->data.v_pointer)
	g_boxed_free (G_VALUE_TYPE (value), list->data.v_pointer);
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      list->data.v_pointer = g_value_dup_boxed (value);
      break;
    default:
      g_warning ("%s: Unsupported type (%s) stored.", G_STRLOC, g_type_name (G_VALUE_TYPE (value)));
      break;
    }
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}

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GtkTreeDataList *
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_gtk_tree_data_list_node_copy (GtkTreeDataList *list,
                               GType            type)
{
  GtkTreeDataList *new_list;
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  g_return_val_if_fail (list != NULL, NULL);
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  new_list = _gtk_tree_data_list_alloc ();
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  new_list->next = NULL;
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  switch (G_TYPE_FUNDAMENTAL (type))
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    {
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    case G_TYPE_BOOLEAN:
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    case G_TYPE_CHAR:
    case G_TYPE_UCHAR:
    case G_TYPE_INT:
    case G_TYPE_UINT:
    case G_TYPE_LONG:
    case G_TYPE_ULONG:
    case G_TYPE_INT64:
    case G_TYPE_UINT64:
    case G_TYPE_ENUM:
    case G_TYPE_FLAGS:
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    case G_TYPE_POINTER:
    case G_TYPE_FLOAT:
    case G_TYPE_DOUBLE:
      new_list->data = list->data;
      break;
    case G_TYPE_STRING:
      new_list->data.v_pointer = g_strdup (list->data.v_pointer);
      break;
    case G_TYPE_OBJECT:
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      new_list->data.v_pointer = list->data.v_pointer;
      if (new_list->data.v_pointer)
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	g_object_ref (new_list->data.v_pointer);
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      break;
    case G_TYPE_BOXED:
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      if (list->data.v_pointer)
	new_list->data.v_pointer = g_boxed_copy (type, list->data.v_pointer);
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      else
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	new_list->data.v_pointer = NULL;
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      break;
    default:
      g_warning ("Unsupported node type (%s) copied.", g_type_name (type));
      break;
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    }
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  return new_list;
}
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gint
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gtk_tree_data_list_compare_func (GtkTreeModel *model,
				 GtkTreeIter  *a,
				 GtkTreeIter  *b,
				 gpointer      user_data)
{
  gint column = GPOINTER_TO_INT (user_data);
  GType type = gtk_tree_model_get_column_type (model, column);
  GValue a_value = {0, };
  GValue b_value = {0, };
  gint retval;
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  const gchar *stra, *strb;
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  gtk_tree_model_get_value (model, a, column, &a_value);
  gtk_tree_model_get_value (model, b, column, &b_value);

  switch (G_TYPE_FUNDAMENTAL (type))
    {
    case G_TYPE_BOOLEAN:
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      if (g_value_get_int (&a_value) < g_value_get_int (&b_value))
	retval = -1;
      else if (g_value_get_int (&a_value) == g_value_get_int (&b_value))
	retval = 0;
      else
	retval = 1;
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      break;
    case G_TYPE_CHAR:
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      if (g_value_get_char (&a_value) < g_value_get_char (&b_value))
	retval = -1;
      else if (g_value_get_char (&a_value) == g_value_get_char (&b_value))
	retval = 0;
      else
	retval = 1;
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      break;
    case G_TYPE_UCHAR:
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      if (g_value_get_uchar (&a_value) < g_value_get_uchar (&b_value))
	retval = -1;
      else if (g_value_get_uchar (&a_value) == g_value_get_uchar (&b_value))
	retval = 0;
      else
	retval = 1;
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      break;
    case G_TYPE_INT:
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      if (g_value_get_int (&a_value) < g_value_get_int (&b_value))
	retval = -1;
      else if (g_value_get_int (&a_value) == g_value_get_int (&b_value))
	retval = 0;
      else
	retval = 1;
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      break;
    case G_TYPE_UINT:
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      if (g_value_get_uint (&a_value) < g_value_get_uint (&b_value))
	retval = -1;
      else if (g_value_get_uint (&a_value) == g_value_get_uint (&b_value))
	retval = 0;
      else
	retval = 1;
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      break;
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    case G_TYPE_LONG:
      if (g_value_get_long (&a_value) < g_value_get_long (&b_value))
	retval = -1;
      else if (g_value_get_long (&a_value) == g_value_get_long (&b_value))
	retval = 0;
      else
	retval = 1;
      break;
    case G_TYPE_ULONG:
      if (g_value_get_ulong (&a_value) < g_value_get_ulong (&b_value))
	retval = -1;
      else if (g_value_get_ulong (&a_value) == g_value_get_ulong (&b_value))
	retval = 0;
      else
	retval = 1;
      break;
    case G_TYPE_INT64:
      if (g_value_get_int64 (&a_value) < g_value_get_int64 (&b_value))
	retval = -1;
      else if (g_value_get_int64 (&a_value) == g_value_get_int64 (&b_value))
	retval = 0;
      else
	retval = 1;
      break;
    case G_TYPE_UINT64:
      if (g_value_get_uint64 (&a_value) < g_value_get_uint64 (&b_value))
	retval = -1;
      else if (g_value_get_uint64 (&a_value) == g_value_get_uint64 (&b_value))
	retval = 0;
      else
	retval = 1;
      break;
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    case G_TYPE_ENUM:
      /* this is somewhat bogus. */
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      if (g_value_get_enum (&a_value) < g_value_get_enum (&b_value))
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	retval = -1;
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      else if (g_value_get_enum (&a_value) == g_value_get_enum (&b_value))
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	retval = 0;
      else
	retval = 1;
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      break;
    case G_TYPE_FLAGS:
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      /* this is even more bogus. */
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      if (g_value_get_flags (&a_value) < g_value_get_flags (&b_value))
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	retval = -1;
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      else if (g_value_get_flags (&a_value) == g_value_get_flags (&b_value))
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	retval = 0;
      else
	retval = 1;
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      break;
    case G_TYPE_FLOAT:
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      if (g_value_get_float (&a_value) < g_value_get_float (&b_value))
	retval = -1;
      else if (g_value_get_float (&a_value) == g_value_get_float (&b_value))
	retval = 0;
      else
	retval = 1;
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      break;
    case G_TYPE_DOUBLE:
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      if (g_value_get_double (&a_value) < g_value_get_double (&b_value))
	retval = -1;
      else if (g_value_get_double (&a_value) == g_value_get_double (&b_value))
	retval = 0;
      else
	retval = 1;
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      break;
    case G_TYPE_STRING:
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      stra = g_value_get_string (&a_value);
      strb = g_value_get_string (&b_value);
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      if (stra == NULL) stra = "";
      if (strb == NULL) strb = "";
      retval = g_utf8_collate (stra, strb);
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      break;
    case G_TYPE_POINTER:
    case G_TYPE_BOXED:
    case G_TYPE_OBJECT:
    default:
      g_warning ("Attempting to sort on invalid type %s\n", g_type_name (type));
      retval = FALSE;
      break;
    }

  g_value_unset (&a_value);
  g_value_unset (&b_value);

  return retval;
}


GList *
_gtk_tree_data_list_header_new (gint   n_columns,
				GType *types)
{
  GList *retval = NULL;

  gint i;

  for (i = 0; i < n_columns; i ++)
    {
      GtkTreeDataSortHeader *header;

      header = g_new (GtkTreeDataSortHeader, 1);

      retval = g_list_prepend (retval, header);
      header->sort_column_id = i;
      header->func = gtk_tree_data_list_compare_func;
      header->destroy = NULL;
      header->data = GINT_TO_POINTER (i);
    }
  return g_list_reverse (retval);
}

void
_gtk_tree_data_list_header_free (GList *list)
{
  GList *tmp;

  for (tmp = list; tmp; tmp = tmp->next)
    {
      GtkTreeDataSortHeader *header = (GtkTreeDataSortHeader *) tmp->data;

      if (header->destroy)
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	{
	  GtkDestroyNotify d = header->destroy;

	  header->destroy = NULL;
	  d (header->data);
	}
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      g_free (header);
    }
  g_list_free (list);
}
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GtkTreeDataSortHeader *
_gtk_tree_data_list_get_header (GList *header_list,
				gint   sort_column_id)
{
  GtkTreeDataSortHeader *header = NULL;

  for (; header_list; header_list = header_list->next)
    {
      header = (GtkTreeDataSortHeader*) header_list->data;
      if (header->sort_column_id == sort_column_id)
	return header;
    }
  return NULL;
}