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gtk2/gtk/gtktreemodelsort.c
Jonathan Blandford a2771e40bc sync to home
2000-11-22 05:16:37 +00:00

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/* gtktreemodelsort.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.
*/
/* NOTE: There is a potential for confusion in this code as to whether an iter,
* path or value refers to the GtkTreeModelSort model, or the child model being
* sorted. As a convention, variables referencing the child model will have an
* s_ prefix before them (ie. s_iter, s_value, s_path);
*/
#include "gtktreemodelsort.h"
#include "gtksignal.h"
#include <string.h>
enum {
CHANGED,
INSERTED,
CHILD_TOGGLED,
DELETED,
LAST_SIGNAL
};
typedef struct _SortElt SortElt;
struct _SortElt
{
GtkTreeIter iter;
SortElt *parent;
GArray *children;
gint ref;
gint offset;
};
typedef struct _SortData SortData;
struct _SortData
{
GtkTreeModel *model;
gint sort_col;
GValueCompareFunc func;
};
static guint tree_model_sort_signals[LAST_SIGNAL] = { 0 };
#define get_array(e,t) ((GArray *)((e)->parent?(e)->parent->children:GTK_TREE_MODEL_SORT(t)->root))
static void gtk_tree_model_sort_init (GtkTreeModelSort *tree_model_sort);
static void gtk_tree_model_sort_class_init (GtkTreeModelSortClass *tree_model_sort_class);
static void gtk_tree_model_sort_tree_model_init (GtkTreeModelIface *iface);
static void gtk_tree_model_sort_finalize (GObject *object);
static void gtk_tree_model_sort_changed (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data);
static void gtk_tree_model_sort_inserted (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data);
static void gtk_tree_model_sort_child_toggled (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data);
static void gtk_tree_model_sort_deleted (GtkTreeModel *model,
GtkTreePath *path,
gpointer data);
static gint gtk_tree_model_sort_get_n_columns (GtkTreeModel *tree_model);
static GType gtk_tree_model_sort_get_column_type (GtkTreeModel *tree_model,
gint index);
static gboolean gtk_tree_model_sort_get_iter (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreePath *path);
static GtkTreePath *gtk_tree_model_sort_get_path (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static void gtk_tree_model_sort_get_value (GtkTreeModel *tree_model,
GtkTreeIter *iter,
gint column,
GValue *value);
static gboolean gtk_tree_model_sort_iter_next (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static gboolean gtk_tree_model_sort_iter_children (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent);
static gboolean gtk_tree_model_sort_iter_has_child (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static gint gtk_tree_model_sort_iter_n_children (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static gboolean gtk_tree_model_sort_iter_nth_child (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint n);
static gboolean gtk_tree_model_sort_iter_parent (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *child);
static void gtk_tree_model_sort_ref_iter (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static void gtk_tree_model_sort_unref_iter (GtkTreeModel *tree_model,
GtkTreeIter *iter);
/* Internal functions */
static GtkTreePath *gtk_tree_model_sort_convert_path_real (GtkTreeModelSort *tree_model_sort,
GtkTreePath *child_path,
gboolean build_children);
static void gtk_tree_model_sort_build_level (GtkTreeModelSort *tree_model_sort,
SortElt *place);
static void gtk_tree_model_sort_free_level (GArray *array);
static GFunc gtk_tree_model_sort_get_func (GtkTreeModelSort *tree_model_sort);
static gint gtk_tree_model_sort_func (gconstpointer a,
gconstpointer b,
gpointer user_data);
static gint g_value_string_compare_func (const GValue *a,
const GValue *b);
static gint g_value_int_compare_func (const GValue *a,
const GValue *b);
GtkType
gtk_tree_model_sort_get_type (void)
{
static GtkType tree_model_sort_type = 0;
if (!tree_model_sort_type)
{
static const GTypeInfo tree_model_sort_info =
{
sizeof (GtkTreeModelSortClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_tree_model_sort_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkTreeModelSort),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_tree_model_sort_init
};
static const GInterfaceInfo tree_model_info =
{
(GInterfaceInitFunc) gtk_tree_model_sort_tree_model_init,
NULL,
NULL
};
tree_model_sort_type = g_type_register_static (GTK_TYPE_OBJECT, "GtkTreeModelSort", &tree_model_sort_info, 0);
g_type_add_interface_static (tree_model_sort_type,
GTK_TYPE_TREE_MODEL,
&tree_model_info);
}
return tree_model_sort_type;
}
static void
gtk_tree_model_sort_class_init (GtkTreeModelSortClass *tree_model_sort_class)
{
GObjectClass *object_class;
object_class = (GObjectClass *) tree_model_sort_class;
tree_model_sort_signals[CHANGED] =
gtk_signal_new ("changed",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTreeModelSortClass, changed),
gtk_marshal_VOID__POINTER_POINTER,
GTK_TYPE_NONE, 2,
GTK_TYPE_POINTER,
GTK_TYPE_POINTER);
tree_model_sort_signals[INSERTED] =
gtk_signal_new ("inserted",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTreeModelSortClass, inserted),
gtk_marshal_VOID__POINTER_POINTER,
GTK_TYPE_NONE, 2,
GTK_TYPE_POINTER,
GTK_TYPE_POINTER);
tree_model_sort_signals[CHILD_TOGGLED] =
gtk_signal_new ("child_toggled",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTreeModelSortClass, child_toggled),
gtk_marshal_VOID__POINTER_POINTER,
GTK_TYPE_NONE, 2,
GTK_TYPE_POINTER,
GTK_TYPE_POINTER);
tree_model_sort_signals[DELETED] =
gtk_signal_new ("deleted",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTreeModelSortClass, deleted),
gtk_marshal_VOID__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_POINTER);
object_class->finalize = gtk_tree_model_sort_finalize;
gtk_object_class_add_signals (GTK_OBJECT_CLASS (object_class), tree_model_sort_signals, LAST_SIGNAL);
}
static void
gtk_tree_model_sort_tree_model_init (GtkTreeModelIface *iface)
{
iface->get_n_columns = gtk_tree_model_sort_get_n_columns;
iface->get_column_type = gtk_tree_model_sort_get_column_type;
iface->get_iter = gtk_tree_model_sort_get_iter;
iface->get_path = gtk_tree_model_sort_get_path;
iface->get_value = gtk_tree_model_sort_get_value;
iface->iter_next = gtk_tree_model_sort_iter_next;
iface->iter_children = gtk_tree_model_sort_iter_children;
iface->iter_has_child = gtk_tree_model_sort_iter_has_child;
iface->iter_n_children = gtk_tree_model_sort_iter_n_children;
iface->iter_nth_child = gtk_tree_model_sort_iter_nth_child;
iface->iter_parent = gtk_tree_model_sort_iter_parent;
iface->ref_iter = gtk_tree_model_sort_ref_iter;
iface->unref_iter = gtk_tree_model_sort_unref_iter;
}
static void
gtk_tree_model_sort_init (GtkTreeModelSort *tree_model_sort)
{
tree_model_sort->stamp = g_random_int ();
}
GtkTreeModel *
gtk_tree_model_sort_new (void)
{
return GTK_TREE_MODEL (gtk_type_new (gtk_tree_model_sort_get_type ()));
}
GtkTreeModel *
gtk_tree_model_sort_new_with_model (GtkTreeModel *child_model,
GValueCompareFunc func,
gint sort_col)
{
GtkTreeModel *retval;
retval = gtk_tree_model_sort_new ();
gtk_tree_model_sort_set_model (GTK_TREE_MODEL_SORT (retval), child_model);
GTK_TREE_MODEL_SORT (retval)->func = func;
GTK_TREE_MODEL_SORT (retval)->sort_col = sort_col;
return retval;
}
/**
* gtk_tree_model_sort_set_model:
* @tree_model_sort: The #GtkTreeModelSort.
* @child_model: A #GtkTreeModel, or NULL.
*
* Sets the model of @tree_model_sort to be @model. If @model is NULL, then the
* old model is unset.
**/
void
gtk_tree_model_sort_set_model (GtkTreeModelSort *tree_model_sort,
GtkTreeModel *child_model)
{
g_return_if_fail (tree_model_sort != NULL);
g_return_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model_sort));
if (child_model)
g_object_ref (G_OBJECT (child_model));
if (tree_model_sort->child_model)
{
gtk_signal_disconnect_by_func (GTK_OBJECT (tree_model_sort->child_model),
gtk_tree_model_sort_changed,
tree_model_sort);
gtk_signal_disconnect_by_func (GTK_OBJECT (tree_model_sort->child_model),
gtk_tree_model_sort_inserted,
tree_model_sort);
gtk_signal_disconnect_by_func (GTK_OBJECT (tree_model_sort->child_model),
gtk_tree_model_sort_child_toggled,
tree_model_sort);
gtk_signal_disconnect_by_func (GTK_OBJECT (tree_model_sort->child_model),
gtk_tree_model_sort_deleted,
tree_model_sort);
g_object_unref (G_OBJECT (tree_model_sort->child_model));
}
tree_model_sort->child_model = child_model;
if (child_model)
{
gtk_signal_connect (GTK_OBJECT (child_model),
"changed",
gtk_tree_model_sort_changed,
tree_model_sort);
gtk_signal_connect (GTK_OBJECT (child_model),
"inserted",
gtk_tree_model_sort_inserted,
tree_model_sort);
gtk_signal_connect (GTK_OBJECT (child_model),
"child_toggled",
gtk_tree_model_sort_child_toggled,
tree_model_sort);
gtk_signal_connect (GTK_OBJECT (child_model),
"deleted",
gtk_tree_model_sort_deleted,
tree_model_sort);
tree_model_sort->flags = gtk_tree_model_get_flags (child_model);
}
}
/**
* gtk_tree_model_sort_convert_path:
* @tree_model_sort: The #GtkTreeModelSort.
* @path: A #GtkTreePath, relative to the child model.
*
* Converts the @path to a new path, relative to the sorted position. In other
* words, the value found in the @tree_model_sort ->child_model at the @path, is
* identical to that found in the @tree_model_sort and the return value.
*
* Return value: A new path, or NULL if @path does not exist in @tree_model_sort
* ->child_model.
**/
GtkTreePath *
gtk_tree_model_sort_convert_path (GtkTreeModelSort *tree_model_sort,
GtkTreePath *child_path)
{
g_return_val_if_fail (tree_model_sort != NULL, NULL);
g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model_sort), NULL);
g_return_val_if_fail (child_path != NULL, NULL);
return gtk_tree_model_sort_convert_path_real (tree_model_sort, child_path, TRUE);
}
static void
gtk_tree_model_sort_finalize (GObject *object)
{
GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) object;
if (tree_model_sort->root)
gtk_tree_model_sort_free_level (tree_model_sort->root);
g_object_unref (G_OBJECT (tree_model_sort->child_model));
}
static void
gtk_tree_model_sort_changed (GtkTreeModel *s_model,
GtkTreePath *s_path,
GtkTreeIter *s_iter,
gpointer data)
{
GtkTreeModelSort *tree_model_sort = GTK_TREE_MODEL_SORT (data);
GtkTreePath *path;
GtkTreeIter iter;
gboolean free_s_path = FALSE;
g_return_if_fail (s_path != NULL || s_iter != NULL);
if (s_path == NULL)
{
free_s_path = TRUE;
s_path = gtk_tree_model_get_path (s_model, s_iter);
}
path = gtk_tree_model_sort_convert_path_real (tree_model_sort, s_path, FALSE);
if (path == NULL)
{
if (free_s_path)
gtk_tree_path_free (s_path);
return;
}
gtk_tree_model_get_iter (GTK_TREE_MODEL (data), &iter, path);
gtk_signal_emit_by_name (GTK_OBJECT (data), "changed", path, &iter);
gtk_tree_path_free (path);
if (free_s_path)
gtk_tree_path_free (s_path);
}
/* FALSE if the value was inserted, TRUE otherwise */
static gboolean
gtk_tree_model_sort_insert_value (GtkTreeModelSort *sort,
GtkTreePath *s_path,
GtkTreeIter *s_iter)
{
GtkTreePath *tmp_path;
GArray *array;
GtkTreeIter iter;
SortElt elt;
SortElt *tmp_elt;
gint offset;
gint middle, j;
GValueCompareFunc func;
GValue s_value = {0, };
GValue tmp_value = {0, };
offset = gtk_tree_path_get_indices (s_path)[gtk_tree_path_get_depth (s_path) - 1];
elt.iter = *s_iter;
elt.ref = 0;
elt.children = NULL;
elt.offset = offset;
tmp_path = gtk_tree_path_copy (s_path);
if (gtk_tree_path_up (tmp_path))
{
GtkTreePath *parent_path;
parent_path = gtk_tree_model_sort_convert_path_real (sort, tmp_path, FALSE);
if (parent_path == NULL)
{
gtk_tree_path_free (tmp_path);
return FALSE;
}
gtk_tree_model_get_iter (GTK_TREE_MODEL (sort), &iter, parent_path);
elt.parent = ((SortElt *) iter.tree_node);
array = ((SortElt *) iter.tree_node)->children;
gtk_tree_path_free (parent_path);
if (array == NULL)
{
gtk_tree_path_free (tmp_path);
return FALSE;
}
}
else
{
if (sort->root == NULL)
sort->root = g_array_sized_new (FALSE, FALSE, sizeof (SortElt), 1);
array = sort->root;
elt.parent = NULL;
}
gtk_tree_path_free (tmp_path);
func = (GValueCompareFunc) gtk_tree_model_sort_get_func (sort);
g_return_val_if_fail (func != NULL, FALSE);
gtk_tree_model_get_value (sort->child_model, s_iter, sort->sort_col, &s_value);
#if 0
/* FIXME: we can, as we are an array, do binary search to find the correct
* location to insert the element. However, I'd rather get it working. The
* below is quite wrong, but a step in the right direction.
*/
low = 0;
high = array->len;
middle = (low + high)/2;
/* Insert the value into the array */
while (low != high)
{
gint cmp;
tmp_elt = &(g_array_index (array, SortElt, middle));
gtk_tree_model_get_value (sort->child_model,
(GtkTreeIter *) tmp_elt,
sort->sort_col,
&tmp_value);
cmp = ((func) (&tmp_value, &s_value));
g_value_unset (&tmp_value);
if (cmp < 0)
high = middle;
else if (cmp > 0)
low = middle;
else if (cmp == 0)
break;
middle = (low + high)/2;
}
#endif
for (middle = 0; middle < array->len; middle++)
{
gint cmp;
tmp_elt = &(g_array_index (array, SortElt, middle));
gtk_tree_model_get_value (sort->child_model,
(GtkTreeIter *) tmp_elt,
sort->sort_col,
&tmp_value);
cmp = ((func) (&s_value, &tmp_value));
g_value_unset (&tmp_value);
if (cmp >= 0)
break;
}
g_array_insert_vals (array, middle, &elt, 1);
g_value_unset (&s_value);
/* update all the larger offsets */
tmp_elt = (SortElt *) array->data;
for (j = 0; j < array->len; j++, tmp_elt++)
{
if ((tmp_elt->offset >= offset) &&
j != middle)
tmp_elt->offset ++;
}
return TRUE;
}
static void
gtk_tree_model_sort_inserted (GtkTreeModel *s_model,
GtkTreePath *s_path,
GtkTreeIter *s_iter,
gpointer data)
{
GtkTreeModelSort *tree_model_sort = GTK_TREE_MODEL_SORT (data);
GtkTreePath *path;
GtkTreeIter iter;
g_return_if_fail (s_path != NULL || s_iter != NULL);
if (s_path == NULL)
s_path = gtk_tree_model_get_path (s_model, s_iter);
if (!(tree_model_sort->flags & GTK_TREE_MODEL_ITERS_PERSIST))
{
gtk_tree_model_sort_free_level ((GArray *) tree_model_sort->root);
tree_model_sort->root = NULL;
}
else
{
GtkTreeIter real_s_iter;
if (s_iter == NULL)
gtk_tree_model_get_iter (s_model, &real_s_iter, s_path);
else
real_s_iter = (* s_iter);
if (!gtk_tree_model_sort_insert_value (tree_model_sort, s_path, &real_s_iter))
return;
}
path = gtk_tree_model_sort_convert_path_real (tree_model_sort, s_path, FALSE);
if (path == NULL)
return;
gtk_tree_model_get_iter (GTK_TREE_MODEL (data), &iter, path);
gtk_signal_emit_by_name (GTK_OBJECT (data), "inserted", path, &iter);
gtk_tree_path_free (path);
}
static void
gtk_tree_model_sort_child_toggled (GtkTreeModel *s_model,
GtkTreePath *s_path,
GtkTreeIter *s_iter,
gpointer data)
{
GtkTreeModelSort *tree_model_sort = GTK_TREE_MODEL_SORT (data);
GtkTreePath *path;
GtkTreeIter iter;
gboolean free_s_path = FALSE;
g_return_if_fail (s_path != NULL || s_iter != NULL);
if (!(tree_model_sort->flags & GTK_TREE_MODEL_ITERS_PERSIST))
{
gtk_tree_model_sort_free_level ((GArray *)tree_model_sort->root);
tree_model_sort->root = NULL;
}
if (s_path == NULL)
{
s_path = gtk_tree_model_get_path (s_model, s_iter);
free_s_path = TRUE;
}
path = gtk_tree_model_sort_convert_path_real (tree_model_sort, s_path, FALSE);
if (path == NULL)
return;
gtk_tree_model_get_iter (GTK_TREE_MODEL (data), &iter, path);
gtk_signal_emit_by_name (GTK_OBJECT (data),
"child_toggled",
path, &iter);
gtk_tree_path_free (path);
if (free_s_path)
gtk_tree_path_free (s_path);
}
static void
gtk_tree_model_sort_deleted (GtkTreeModel *s_model,
GtkTreePath *s_path,
gpointer data)
{
GtkTreeModelSort *tree_model_sort = GTK_TREE_MODEL_SORT (data);
GtkTreePath *path;
g_return_if_fail (s_path != NULL);
path = gtk_tree_model_sort_convert_path (tree_model_sort, s_path);
g_return_if_fail (path != NULL);
if (!(tree_model_sort->flags & GTK_TREE_MODEL_ITERS_PERSIST))
{
gtk_tree_model_sort_free_level ((GArray *)tree_model_sort->root);
tree_model_sort->root = NULL;
}
else
{
GArray *array;
GtkTreeIter iter;
SortElt *elt;
gint offset;
gint i;
gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_model_sort), &iter, path);
elt = (SortElt *) iter.tree_node;
offset = elt->offset;
array = get_array (elt, tree_model_sort);
if (array->len == 1)
{
if (((SortElt *)array->data)->parent == NULL)
tree_model_sort->root = NULL;
else
(((SortElt *)array->data)->parent)->children = NULL;
gtk_tree_model_sort_free_level (array);
}
else
{
g_array_remove_index (array, elt - ((SortElt *) array->data));
for (i = 0; i < array->len; i++)
{
elt = & (g_array_index (array, SortElt, i));
if (elt->offset > offset)
elt->offset--;
}
}
}
tree_model_sort->stamp++;
gtk_signal_emit_by_name (GTK_OBJECT (data), "deleted", path);
gtk_tree_path_free (path);
}
static gint
gtk_tree_model_sort_get_n_columns (GtkTreeModel *tree_model)
{
g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model), 0);
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->child_model != NULL, 0);
return gtk_tree_model_get_n_columns (GTK_TREE_MODEL_SORT (tree_model)->child_model);
}
static GType
gtk_tree_model_sort_get_column_type (GtkTreeModel *tree_model,
gint index)
{
g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model), G_TYPE_INVALID);
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->child_model != NULL, G_TYPE_INVALID);
return gtk_tree_model_get_column_type (GTK_TREE_MODEL_SORT (tree_model)->child_model, index);
}
static gboolean
gtk_tree_model_sort_get_iter_helper (GtkTreeModelSort *tree_model_sort,
GArray *array,
GtkTreeIter *iter,
gint depth,
GtkTreePath *path)
{
SortElt *elt;
if (array == NULL)
return FALSE;
if (gtk_tree_path_get_indices (path)[depth] > array->len)
return FALSE;
elt = & (g_array_index (array, SortElt, gtk_tree_path_get_indices (path)[depth]));
if (depth == gtk_tree_path_get_depth (path) - 1)
{
iter->stamp = tree_model_sort->stamp;
iter->tree_node = elt;
return TRUE;
}
if (elt->children != NULL)
return gtk_tree_model_sort_get_iter_helper (tree_model_sort,
elt->children,
iter,
depth + 1,
path);
if (gtk_tree_model_iter_has_child (tree_model_sort->child_model,
&(elt->iter)))
gtk_tree_model_sort_build_level (tree_model_sort, elt);
return gtk_tree_model_sort_get_iter_helper (tree_model_sort,
elt->children,
iter,
depth + 1,
path);
}
static gboolean
gtk_tree_model_sort_get_iter (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreePath *path)
{
g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model), FALSE);
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->child_model != NULL, FALSE);
if (GTK_TREE_MODEL_SORT (tree_model)->root == NULL)
gtk_tree_model_sort_build_level (GTK_TREE_MODEL_SORT (tree_model), NULL);
return gtk_tree_model_sort_get_iter_helper (GTK_TREE_MODEL_SORT (tree_model),
GTK_TREE_MODEL_SORT (tree_model)->root,
iter, 0, path);
}
static GtkTreePath *
gtk_tree_model_sort_get_path (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model), NULL);
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->child_model != NULL, NULL);
return gtk_tree_model_get_path (GTK_TREE_MODEL_SORT (tree_model)->child_model, iter);
}
static void
gtk_tree_model_sort_get_value (GtkTreeModel *tree_model,
GtkTreeIter *iter,
gint column,
GValue *value)
{
SortElt *elt;
g_return_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model));
g_return_if_fail (GTK_TREE_MODEL_SORT (tree_model)->child_model != NULL);
g_return_if_fail (GTK_TREE_MODEL_SORT (tree_model)->stamp == iter->stamp);
elt = iter->tree_node;
gtk_tree_model_get_value (GTK_TREE_MODEL_SORT (tree_model)->child_model, (GtkTreeIter *)elt, column, value);
}
static gboolean
gtk_tree_model_sort_iter_next (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GArray *array;
SortElt *elt;
g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model), FALSE);
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->child_model != NULL, FALSE);
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->stamp == iter->stamp, FALSE);
elt = iter->tree_node;
array = get_array (elt, tree_model);
if (elt - ((SortElt*) array->data) >= array->len - 1)
{
iter->stamp = 0;
return FALSE;
}
iter->tree_node = elt + 1;
return TRUE;
}
static gboolean
gtk_tree_model_sort_iter_children (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent)
{
SortElt *elt;
g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model), FALSE);
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->child_model != NULL, FALSE);
if (parent)
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->stamp == parent->stamp, FALSE);
if (parent)
elt = parent->tree_node;
else
elt = (SortElt *) ((GArray *)GTK_TREE_MODEL_SORT (tree_model)->root)->data;
if (elt == NULL)
return FALSE;
if (elt->children == NULL &&
gtk_tree_model_iter_has_child (GTK_TREE_MODEL_SORT (tree_model)->child_model, (GtkTreeIter *)elt))
gtk_tree_model_sort_build_level (GTK_TREE_MODEL_SORT (tree_model), elt);
if (elt->children == NULL)
return FALSE;
iter->stamp = GTK_TREE_MODEL_SORT (tree_model)->stamp;
iter->tree_node = elt->children->data;
return TRUE;
}
static gboolean
gtk_tree_model_sort_iter_has_child (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
SortElt *elt;
g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model), FALSE);
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->child_model != NULL, FALSE);
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->stamp == iter->stamp, FALSE);
elt = iter->tree_node;
if (elt->children)
return TRUE;
return gtk_tree_model_iter_has_child (GTK_TREE_MODEL_SORT (tree_model)->child_model, (GtkTreeIter *) elt);
}
static gint
gtk_tree_model_sort_iter_n_children (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
SortElt *elt;
g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model), 0);
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->child_model != NULL, 0);
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->stamp == iter->stamp, 0);
elt = iter->tree_node;
if (elt->children)
return elt->children->len;
return gtk_tree_model_iter_n_children (GTK_TREE_MODEL_SORT (tree_model)->child_model, (GtkTreeIter *) elt);
}
static gboolean
gtk_tree_model_sort_iter_nth_child (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint n)
{
SortElt *elt;
g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model), FALSE);
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->child_model != NULL, FALSE);
if (parent)
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->stamp == parent->stamp, FALSE);
elt = iter->tree_node;
if (elt->children == NULL)
{
if (gtk_tree_model_iter_has_child (GTK_TREE_MODEL_SORT (tree_model)->child_model, (GtkTreeIter *)elt))
gtk_tree_model_sort_build_level (GTK_TREE_MODEL_SORT (tree_model), elt);
else
return FALSE;
}
if (elt->children == NULL)
return FALSE;
if (n >= elt->children->len)
return FALSE;
iter->stamp = GTK_TREE_MODEL_SORT (tree_model)->stamp;
iter->tree_node = &g_array_index (elt->children, SortElt, n);
return TRUE;
}
static gboolean
gtk_tree_model_sort_iter_parent (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *child)
{
SortElt *elt;
g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model), FALSE);
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->child_model != NULL, FALSE);
g_return_val_if_fail (GTK_TREE_MODEL_SORT (tree_model)->stamp == child->stamp, FALSE);
elt = iter->tree_node;
if (elt->parent)
{
iter->stamp = GTK_TREE_MODEL_SORT (tree_model)->stamp;
iter->tree_node = elt->parent;
return TRUE;
}
return FALSE;
}
static void
gtk_tree_model_sort_ref_iter (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
}
static void
gtk_tree_model_sort_unref_iter (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
}
/* Internal functions */
static GtkTreePath *
gtk_tree_model_sort_convert_path_real (GtkTreeModelSort *tree_model_sort,
GtkTreePath *child_path,
gboolean build_children)
{
GtkTreePath *retval;
GArray *array;
gint *indices;
gint i = 0;
if (tree_model_sort->root == NULL)
{
if (build_children)
gtk_tree_model_sort_build_level (tree_model_sort, NULL);
else
return FALSE;
}
retval = gtk_tree_path_new ();
array = (GArray *) tree_model_sort->root;
indices = gtk_tree_path_get_indices (child_path);
do
{
SortElt *elt;
gboolean found = FALSE;
gint j;
if ((array->len < indices[i]) || (array == NULL))
{
gtk_tree_path_free (retval);
return NULL;
}
elt = (SortElt *) array->data;
for (j = 0; j < array->len; j++, elt++)
{
if (elt->offset == indices[i])
{
found = TRUE;
break;
}
}
if (! found)
{
gtk_tree_path_free (retval);
return NULL;
}
gtk_tree_path_prepend_index (retval, j);
i++;
if (i == gtk_tree_path_get_depth (child_path))
break;
if (elt->children == NULL)
{
if (build_children)
{
gtk_tree_path_prepend_index (retval, j);
gtk_tree_model_sort_build_level (tree_model_sort, elt);
}
else
{
gtk_tree_path_free (retval);
return NULL;
}
}
}
while (TRUE);
return retval;
}
static void
gtk_tree_model_sort_build_level (GtkTreeModelSort *tree_model_sort,
SortElt *place)
{
gint n, i = 0;
GArray *children;
GtkTreeIter *parent_iter = NULL;
GtkTreeIter iter;
SortElt elt;
SortData sort_data;
if (place)
parent_iter = & (place->iter);
n = gtk_tree_model_iter_n_children (tree_model_sort->child_model, parent_iter);
if (n == 0)
return;
children = g_array_sized_new (FALSE, FALSE, sizeof (SortElt), n);
if (place)
place->children = children;
else
tree_model_sort->root = children;
gtk_tree_model_iter_children (tree_model_sort->child_model,
&iter,
parent_iter);
do
{
elt.iter = iter;
elt.parent = place;
elt.children = NULL;
elt.ref = 0;
elt.offset = i;
g_array_append_vals (children, &elt, 1);
i++;
}
while (gtk_tree_model_iter_next (tree_model_sort->child_model, &iter));
sort_data.func = (GValueCompareFunc) gtk_tree_model_sort_get_func (tree_model_sort);
sort_data.model = tree_model_sort->child_model;
sort_data.sort_col = tree_model_sort->sort_col;
g_array_sort_with_data (children, gtk_tree_model_sort_func, &sort_data);
}
static void
gtk_tree_model_sort_free_level (GArray *array)
{
gint i;
if (array == NULL)
return;
for (i = 0; i < array->len; i++)
{
SortElt *elt;
elt = &g_array_index (array, SortElt, i);
if (elt->children)
gtk_tree_model_sort_free_level (array);
}
g_array_free (array, TRUE);
}
static GFunc
gtk_tree_model_sort_get_func (GtkTreeModelSort *tree_model_sort)
{
GValueCompareFunc func;
if (tree_model_sort->func)
func = tree_model_sort->func;
else
{
switch (gtk_tree_model_get_column_type (tree_model_sort->child_model,
tree_model_sort->sort_col))
{
case G_TYPE_STRING:
func = &g_value_string_compare_func;
break;
case G_TYPE_INT:
func = &g_value_int_compare_func;
break;
default:
g_warning ("No comparison function for row %d (Type %s)\n",
tree_model_sort->sort_col,
g_type_name (gtk_tree_model_get_column_type (tree_model_sort->child_model,
tree_model_sort->sort_col)));
return NULL;
}
}
return (GFunc) func;
}
static gint
gtk_tree_model_sort_func (gconstpointer a,
gconstpointer b,
gpointer user_data)
{
GValue value_a;
GValue value_b;
SortData *sort_data = user_data;
gint retval;
gtk_tree_model_get_value (sort_data->model, (GtkTreeIter *) a, sort_data->sort_col, &value_a);
gtk_tree_model_get_value (sort_data->model, (GtkTreeIter *) b, sort_data->sort_col, &value_b);
retval = (sort_data->func) (&value_a, &value_b);
g_value_unset (&value_a);
g_value_unset (&value_b);
return retval;
}
static gint
g_value_string_compare_func (const GValue *a,
const GValue *b)
{
gchar *a_str = g_value_get_string (a);
gchar *b_str = g_value_get_string (b);
if (b_str == NULL)
return a_str == NULL;
if (a_str == NULL)
return -1;
return strcmp (a_str, b_str);
}
static gint
g_value_int_compare_func (const GValue *a,
const GValue *b)
{
return g_value_get_int (a) < g_value_get_int (b);
}
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