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gtk2/gtk/gtktreemodelfilter.c
Johan Dahlin eee7bb2b2e [annotations] Add allow-none 
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containing a parameter and the string 'or %NULL'.
Gdk backends and demos excluded as they are not part of a public API

https://bugzilla.gnome.org/show_bug.cgi?id=610474
2010-04-03 20:56:15 -04:00

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/* gtktreemodelfilter.c
* Copyright (C) 2000,2001 Red Hat, Inc., Jonathan Blandford <jrb@redhat.com>
* Copyright (C) 2001-2003 Kristian Rietveld <kris@gtk.org>
*
* 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 "gtktreemodelfilter.h"
#include "gtkintl.h"
#include "gtktreednd.h"
#include "gtkprivate.h"
#include "gtkalias.h"
#include <string.h>
/* ITER FORMAT:
*
* iter->stamp = filter->priv->stamp
* iter->user_data = FilterLevel
* iter->user_data2 = FilterElt
*/
/* all paths, iters, etc prefixed with c_ are paths, iters, etc relative to the
* child model.
*/
/* A few notes:
* There are three model/views involved, so there are two mappings:
* * this model -> child model: mapped via offset in FilterElt.
* * this model -> parent model (or view): mapped via the array index
* of FilterElt.
*
* Note that there are two kinds of paths relative to the filter model
* (those generated from the array indices): paths taking non-visible
* nodes into account, and paths which don't. Paths which take
* non-visible nodes into account should only be used internally and
* NEVER be passed along with a signal emission.
*
* The filter model has a reference on every node that is not in the root
* level and has a parent with ref_count > 1. Exception is a virtual root
* level; all nodes in the virtual root level are referenced too.
*/
typedef struct _FilterElt FilterElt;
typedef struct _FilterLevel FilterLevel;
struct _FilterElt
{
GtkTreeIter iter;
FilterLevel *children;
gint offset;
gint ref_count;
gint zero_ref_count;
gboolean visible;
};
struct _FilterLevel
{
GArray *array;
gint ref_count;
gint visible_nodes;
gint parent_elt_index;
FilterLevel *parent_level;
};
#define GTK_TREE_MODEL_FILTER_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_TREE_MODEL_FILTER, GtkTreeModelFilterPrivate))
struct _GtkTreeModelFilterPrivate
{
gpointer root;
gint stamp;
guint child_flags;
GtkTreeModel *child_model;
gint zero_ref_count;
GtkTreePath *virtual_root;
GtkTreeModelFilterVisibleFunc visible_func;
gpointer visible_data;
GDestroyNotify visible_destroy;
gint modify_n_columns;
GType *modify_types;
GtkTreeModelFilterModifyFunc modify_func;
gpointer modify_data;
GDestroyNotify modify_destroy;
gint visible_column;
gboolean visible_method_set;
gboolean modify_func_set;
gboolean in_row_deleted;
gboolean virtual_root_deleted;
/* signal ids */
guint changed_id;
guint inserted_id;
guint has_child_toggled_id;
guint deleted_id;
guint reordered_id;
};
/* properties */
enum
{
PROP_0,
PROP_CHILD_MODEL,
PROP_VIRTUAL_ROOT
};
#define GTK_TREE_MODEL_FILTER_CACHE_CHILD_ITERS(filter) \
(((GtkTreeModelFilter *)filter)->priv->child_flags & GTK_TREE_MODEL_ITERS_PERSIST)
#define FILTER_ELT(filter_elt) ((FilterElt *)filter_elt)
#define FILTER_LEVEL(filter_level) ((FilterLevel *)filter_level)
#define FILTER_LEVEL_PARENT_ELT(level) (&g_array_index (FILTER_LEVEL ((level))->parent_level->array, FilterElt, FILTER_LEVEL ((level))->parent_elt_index))
#define FILTER_LEVEL_ELT_INDEX(level, elt) (FILTER_ELT ((elt)) - FILTER_ELT (FILTER_LEVEL ((level))->array->data))
/* general code (object/interface init, properties, etc) */
static void gtk_tree_model_filter_tree_model_init (GtkTreeModelIface *iface);
static void gtk_tree_model_filter_drag_source_init (GtkTreeDragSourceIface *iface);
static void gtk_tree_model_filter_finalize (GObject *object);
static void gtk_tree_model_filter_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_tree_model_filter_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
/* signal handlers */
static void gtk_tree_model_filter_row_changed (GtkTreeModel *c_model,
GtkTreePath *c_path,
GtkTreeIter *c_iter,
gpointer data);
static void gtk_tree_model_filter_row_inserted (GtkTreeModel *c_model,
GtkTreePath *c_path,
GtkTreeIter *c_iter,
gpointer data);
static void gtk_tree_model_filter_row_has_child_toggled (GtkTreeModel *c_model,
GtkTreePath *c_path,
GtkTreeIter *c_iter,
gpointer data);
static void gtk_tree_model_filter_row_deleted (GtkTreeModel *c_model,
GtkTreePath *c_path,
gpointer data);
static void gtk_tree_model_filter_rows_reordered (GtkTreeModel *c_model,
GtkTreePath *c_path,
GtkTreeIter *c_iter,
gint *new_order,
gpointer data);
/* GtkTreeModel interface */
static GtkTreeModelFlags gtk_tree_model_filter_get_flags (GtkTreeModel *model);
static gint gtk_tree_model_filter_get_n_columns (GtkTreeModel *model);
static GType gtk_tree_model_filter_get_column_type (GtkTreeModel *model,
gint index);
static gboolean gtk_tree_model_filter_get_iter_full (GtkTreeModel *model,
GtkTreeIter *iter,
GtkTreePath *path);
static gboolean gtk_tree_model_filter_get_iter (GtkTreeModel *model,
GtkTreeIter *iter,
GtkTreePath *path);
static GtkTreePath *gtk_tree_model_filter_get_path (GtkTreeModel *model,
GtkTreeIter *iter);
static void gtk_tree_model_filter_get_value (GtkTreeModel *model,
GtkTreeIter *iter,
gint column,
GValue *value);
static gboolean gtk_tree_model_filter_iter_next (GtkTreeModel *model,
GtkTreeIter *iter);
static gboolean gtk_tree_model_filter_iter_children (GtkTreeModel *model,
GtkTreeIter *iter,
GtkTreeIter *parent);
static gboolean gtk_tree_model_filter_iter_has_child (GtkTreeModel *model,
GtkTreeIter *iter);
static gint gtk_tree_model_filter_iter_n_children (GtkTreeModel *model,
GtkTreeIter *iter);
static gboolean gtk_tree_model_filter_iter_nth_child (GtkTreeModel *model,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint n);
static gboolean gtk_tree_model_filter_iter_parent (GtkTreeModel *model,
GtkTreeIter *iter,
GtkTreeIter *child);
static void gtk_tree_model_filter_ref_node (GtkTreeModel *model,
GtkTreeIter *iter);
static void gtk_tree_model_filter_unref_node (GtkTreeModel *model,
GtkTreeIter *iter);
/* TreeDragSource interface */
static gboolean gtk_tree_model_filter_row_draggable (GtkTreeDragSource *drag_source,
GtkTreePath *path);
static gboolean gtk_tree_model_filter_drag_data_get (GtkTreeDragSource *drag_source,
GtkTreePath *path,
GtkSelectionData *selection_data);
static gboolean gtk_tree_model_filter_drag_data_delete (GtkTreeDragSource *drag_source,
GtkTreePath *path);
/* private functions */
static void gtk_tree_model_filter_build_level (GtkTreeModelFilter *filter,
FilterLevel *parent_level,
gint parent_elt_index,
gboolean emit_inserted);
static void gtk_tree_model_filter_free_level (GtkTreeModelFilter *filter,
FilterLevel *filter_level);
static GtkTreePath *gtk_tree_model_filter_elt_get_path (FilterLevel *level,
FilterElt *elt,
GtkTreePath *root);
static GtkTreePath *gtk_tree_model_filter_add_root (GtkTreePath *src,
GtkTreePath *root);
static GtkTreePath *gtk_tree_model_filter_remove_root (GtkTreePath *src,
GtkTreePath *root);
static void gtk_tree_model_filter_increment_stamp (GtkTreeModelFilter *filter);
static gboolean gtk_tree_model_filter_visible (GtkTreeModelFilter *filter,
GtkTreeIter *child_iter);
static void gtk_tree_model_filter_clear_cache_helper (GtkTreeModelFilter *filter,
FilterLevel *level);
static void gtk_tree_model_filter_real_unref_node (GtkTreeModel *model,
GtkTreeIter *iter,
gboolean propagate_unref);
static void gtk_tree_model_filter_set_model (GtkTreeModelFilter *filter,
GtkTreeModel *child_model);
static void gtk_tree_model_filter_ref_path (GtkTreeModelFilter *filter,
GtkTreePath *path);
static void gtk_tree_model_filter_unref_path (GtkTreeModelFilter *filter,
GtkTreePath *path);
static void gtk_tree_model_filter_set_root (GtkTreeModelFilter *filter,
GtkTreePath *root);
static GtkTreePath *gtk_real_tree_model_filter_convert_child_path_to_path (GtkTreeModelFilter *filter,
GtkTreePath *child_path,
gboolean build_levels,
gboolean fetch_children);
static FilterElt *gtk_tree_model_filter_get_nth (GtkTreeModelFilter *filter,
FilterLevel *level,
int n);
static gboolean gtk_tree_model_filter_elt_is_visible_in_target (FilterLevel *level,
FilterElt *elt);
static FilterElt *gtk_tree_model_filter_get_nth_visible (GtkTreeModelFilter *filter,
FilterLevel *level,
int n);
static FilterElt *gtk_tree_model_filter_fetch_child (GtkTreeModelFilter *filter,
FilterLevel *level,
gint offset,
gint *index);
static void gtk_tree_model_filter_remove_node (GtkTreeModelFilter *filter,
GtkTreeIter *iter);
static void gtk_tree_model_filter_update_children (GtkTreeModelFilter *filter,
FilterLevel *level,
FilterElt *elt);
static FilterElt *bsearch_elt_with_offset (GArray *array,
gint offset,
gint *index);
G_DEFINE_TYPE_WITH_CODE (GtkTreeModelFilter, gtk_tree_model_filter, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_MODEL,
gtk_tree_model_filter_tree_model_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_DRAG_SOURCE,
gtk_tree_model_filter_drag_source_init))
static void
gtk_tree_model_filter_init (GtkTreeModelFilter *filter)
{
filter->priv = GTK_TREE_MODEL_FILTER_GET_PRIVATE (filter);
filter->priv->visible_column = -1;
filter->priv->zero_ref_count = 0;
filter->priv->visible_method_set = FALSE;
filter->priv->modify_func_set = FALSE;
filter->priv->in_row_deleted = FALSE;
filter->priv->virtual_root_deleted = FALSE;
}
static void
gtk_tree_model_filter_class_init (GtkTreeModelFilterClass *filter_class)
{
GObjectClass *object_class;
object_class = (GObjectClass *) filter_class;
object_class->set_property = gtk_tree_model_filter_set_property;
object_class->get_property = gtk_tree_model_filter_get_property;
object_class->finalize = gtk_tree_model_filter_finalize;
/* Properties -- FIXME: disabled translations for now, until I can come up with a
* better description
*/
g_object_class_install_property (object_class,
PROP_CHILD_MODEL,
g_param_spec_object ("child-model",
("The child model"),
("The model for the filtermodel to filter"),
GTK_TYPE_TREE_MODEL,
GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_VIRTUAL_ROOT,
g_param_spec_boxed ("virtual-root",
("The virtual root"),
("The virtual root (relative to the child model) for this filtermodel"),
GTK_TYPE_TREE_PATH,
GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_type_class_add_private (object_class, sizeof (GtkTreeModelFilterPrivate));
}
static void
gtk_tree_model_filter_tree_model_init (GtkTreeModelIface *iface)
{
iface->get_flags = gtk_tree_model_filter_get_flags;
iface->get_n_columns = gtk_tree_model_filter_get_n_columns;
iface->get_column_type = gtk_tree_model_filter_get_column_type;
iface->get_iter = gtk_tree_model_filter_get_iter;
iface->get_path = gtk_tree_model_filter_get_path;
iface->get_value = gtk_tree_model_filter_get_value;
iface->iter_next = gtk_tree_model_filter_iter_next;
iface->iter_children = gtk_tree_model_filter_iter_children;
iface->iter_has_child = gtk_tree_model_filter_iter_has_child;
iface->iter_n_children = gtk_tree_model_filter_iter_n_children;
iface->iter_nth_child = gtk_tree_model_filter_iter_nth_child;
iface->iter_parent = gtk_tree_model_filter_iter_parent;
iface->ref_node = gtk_tree_model_filter_ref_node;
iface->unref_node = gtk_tree_model_filter_unref_node;
}
static void
gtk_tree_model_filter_drag_source_init (GtkTreeDragSourceIface *iface)
{
iface->row_draggable = gtk_tree_model_filter_row_draggable;
iface->drag_data_delete = gtk_tree_model_filter_drag_data_delete;
iface->drag_data_get = gtk_tree_model_filter_drag_data_get;
}
static void
gtk_tree_model_filter_finalize (GObject *object)
{
GtkTreeModelFilter *filter = (GtkTreeModelFilter *) object;
if (filter->priv->virtual_root && !filter->priv->virtual_root_deleted)
{
gtk_tree_model_filter_unref_path (filter, filter->priv->virtual_root);
filter->priv->virtual_root_deleted = TRUE;
}
gtk_tree_model_filter_set_model (filter, NULL);
if (filter->priv->virtual_root)
gtk_tree_path_free (filter->priv->virtual_root);
if (filter->priv->root)
gtk_tree_model_filter_free_level (filter, filter->priv->root);
g_free (filter->priv->modify_types);
if (filter->priv->modify_destroy)
filter->priv->modify_destroy (filter->priv->modify_data);
if (filter->priv->visible_destroy)
filter->priv->visible_destroy (filter->priv->visible_data);
/* must chain up */
G_OBJECT_CLASS (gtk_tree_model_filter_parent_class)->finalize (object);
}
static void
gtk_tree_model_filter_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkTreeModelFilter *filter = GTK_TREE_MODEL_FILTER (object);
switch (prop_id)
{
case PROP_CHILD_MODEL:
gtk_tree_model_filter_set_model (filter, g_value_get_object (value));
break;
case PROP_VIRTUAL_ROOT:
gtk_tree_model_filter_set_root (filter, g_value_get_boxed (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_tree_model_filter_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkTreeModelFilter *filter = GTK_TREE_MODEL_FILTER (object);
switch (prop_id)
{
case PROP_CHILD_MODEL:
g_value_set_object (value, filter->priv->child_model);
break;
case PROP_VIRTUAL_ROOT:
g_value_set_boxed (value, filter->priv->virtual_root);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* helpers */
static void
gtk_tree_model_filter_build_level (GtkTreeModelFilter *filter,
FilterLevel *parent_level,
gint parent_elt_index,
gboolean emit_inserted)
{
GtkTreeIter iter;
GtkTreeIter first_node;
GtkTreeIter root;
FilterElt *parent_elt = NULL;
FilterLevel *new_level;
gint length = 0;
gint i;
g_assert (filter->priv->child_model != NULL);
if (filter->priv->in_row_deleted)
return;
if (!parent_level)
{
if (filter->priv->virtual_root)
{
if (gtk_tree_model_get_iter (filter->priv->child_model, &root, filter->priv->virtual_root) == FALSE)
return;
length = gtk_tree_model_iter_n_children (filter->priv->child_model, &root);
if (gtk_tree_model_iter_children (filter->priv->child_model, &iter, &root) == FALSE)
return;
}
else
{
if (!gtk_tree_model_get_iter_first (filter->priv->child_model, &iter))
return;
length = gtk_tree_model_iter_n_children (filter->priv->child_model, NULL);
}
}
else
{
GtkTreeIter parent_iter;
GtkTreeIter child_parent_iter;
parent_elt = &g_array_index (parent_level->array, FilterElt, parent_elt_index);
parent_iter.stamp = filter->priv->stamp;
parent_iter.user_data = parent_level;
parent_iter.user_data2 = parent_elt;
gtk_tree_model_filter_convert_iter_to_child_iter (filter,
&child_parent_iter,
&parent_iter);
if (gtk_tree_model_iter_children (filter->priv->child_model, &iter, &child_parent_iter) == FALSE)
return;
/* stamp may have changed */
gtk_tree_model_filter_convert_iter_to_child_iter (filter,
&child_parent_iter,
&parent_iter);
length = gtk_tree_model_iter_n_children (filter->priv->child_model, &child_parent_iter);
}
g_return_if_fail (length > 0);
new_level = g_new (FilterLevel, 1);
new_level->array = g_array_sized_new (FALSE, FALSE,
sizeof (FilterElt),
length);
new_level->ref_count = 0;
new_level->visible_nodes = 0;
new_level->parent_elt_index = parent_elt_index;
new_level->parent_level = parent_level;
if (parent_elt_index >= 0)
parent_elt->children = new_level;
else
filter->priv->root = new_level;
/* increase the count of zero ref_counts */
while (parent_level)
{
g_array_index (parent_level->array, FilterElt, parent_elt_index).zero_ref_count++;
parent_elt_index = parent_level->parent_elt_index;
parent_level = parent_level->parent_level;
}
if (new_level != filter->priv->root)
filter->priv->zero_ref_count++;
i = 0;
first_node = iter;
do
{
if (gtk_tree_model_filter_visible (filter, &iter))
{
GtkTreeIter f_iter;
FilterElt filter_elt;
filter_elt.offset = i;
filter_elt.zero_ref_count = 0;
filter_elt.ref_count = 0;
filter_elt.children = NULL;
filter_elt.visible = TRUE;
if (GTK_TREE_MODEL_FILTER_CACHE_CHILD_ITERS (filter))
filter_elt.iter = iter;
g_array_append_val (new_level->array, filter_elt);
new_level->visible_nodes++;
f_iter.stamp = filter->priv->stamp;
f_iter.user_data = new_level;
f_iter.user_data2 = &(g_array_index (new_level->array, FilterElt, new_level->array->len - 1));
if (new_level->parent_level || filter->priv->virtual_root)
gtk_tree_model_filter_ref_node (GTK_TREE_MODEL (filter), &f_iter);
if (emit_inserted)
{
GtkTreePath *f_path;
GtkTreeIter children;
f_path = gtk_tree_model_get_path (GTK_TREE_MODEL (filter),
&f_iter);
gtk_tree_model_row_inserted (GTK_TREE_MODEL (filter),
f_path, &f_iter);
gtk_tree_path_free (f_path);
if (gtk_tree_model_iter_children (filter->priv->child_model,
&children, &iter))
gtk_tree_model_filter_update_children (filter,
new_level,
FILTER_ELT (f_iter.user_data2));
}
}
i++;
}
while (gtk_tree_model_iter_next (filter->priv->child_model, &iter));
if (new_level->array->len == 0
&& (new_level != filter->priv->root || filter->priv->virtual_root))
{
/* If none of the nodes are visible, we will just pull in the
* first node of the level and keep a reference on it. We need this
* to make sure that we get all signals for this level.
*/
FilterElt filter_elt;
GtkTreeIter f_iter;
filter_elt.offset = 0;
filter_elt.zero_ref_count = 0;
filter_elt.ref_count = 0;
filter_elt.children = NULL;
filter_elt.visible = FALSE;
if (GTK_TREE_MODEL_FILTER_CACHE_CHILD_ITERS (filter))
filter_elt.iter = first_node;
g_array_append_val (new_level->array, filter_elt);
f_iter.stamp = filter->priv->stamp;
f_iter.user_data = new_level;
f_iter.user_data2 = &(g_array_index (new_level->array, FilterElt, new_level->array->len - 1));
gtk_tree_model_filter_ref_node (GTK_TREE_MODEL (filter), &f_iter);
}
else if (new_level->array->len == 0)
gtk_tree_model_filter_free_level (filter, new_level);
}
static void
gtk_tree_model_filter_free_level (GtkTreeModelFilter *filter,
FilterLevel *filter_level)
{
gint i;
g_assert (filter_level);
for (i = 0; i < filter_level->array->len; i++)
{
if (g_array_index (filter_level->array, FilterElt, i).children)
gtk_tree_model_filter_free_level (filter,
FILTER_LEVEL (g_array_index (filter_level->array, FilterElt, i).children));
if (filter_level->parent_level || filter->priv->virtual_root)
{
GtkTreeIter f_iter;
f_iter.stamp = filter->priv->stamp;
f_iter.user_data = filter_level;
f_iter.user_data2 = &(g_array_index (filter_level->array, FilterElt, i));
gtk_tree_model_filter_unref_node (GTK_TREE_MODEL (filter), &f_iter);
}
}
if (filter_level->ref_count == 0)
{
FilterLevel *parent_level = filter_level->parent_level;
gint parent_elt_index = filter_level->parent_elt_index;
while (parent_level)
{
g_array_index (parent_level->array, FilterElt, parent_elt_index).zero_ref_count--;
parent_elt_index = parent_level->parent_elt_index;
parent_level = parent_level->parent_level;
}
if (filter_level != filter->priv->root)
filter->priv->zero_ref_count--;
}
if (filter_level->parent_elt_index >= 0)
FILTER_LEVEL_PARENT_ELT (filter_level)->children = NULL;
else
filter->priv->root = NULL;
g_array_free (filter_level->array, TRUE);
filter_level->array = NULL;
g_free (filter_level);
filter_level = NULL;
}
/* Creates paths suitable for accessing the child model. */
static GtkTreePath *
gtk_tree_model_filter_elt_get_path (FilterLevel *level,
FilterElt *elt,
GtkTreePath *root)
{
FilterLevel *walker = level;
FilterElt *walker2 = elt;
GtkTreePath *path;
GtkTreePath *real_path;
g_return_val_if_fail (level != NULL, NULL);
g_return_val_if_fail (elt != NULL, NULL);
path = gtk_tree_path_new ();
while (walker)
{
gtk_tree_path_prepend_index (path, walker2->offset);
if (!walker->parent_level)
break;
walker2 = FILTER_LEVEL_PARENT_ELT (walker);
walker = walker->parent_level;
}
if (root)
{
real_path = gtk_tree_model_filter_add_root (path, root);
gtk_tree_path_free (path);
return real_path;
}
return path;
}
static GtkTreePath *
gtk_tree_model_filter_add_root (GtkTreePath *src,
GtkTreePath *root)
{
GtkTreePath *retval;
gint i;
retval = gtk_tree_path_copy (root);
for (i = 0; i < gtk_tree_path_get_depth (src); i++)
gtk_tree_path_append_index (retval, gtk_tree_path_get_indices (src)[i]);
return retval;
}
static GtkTreePath *
gtk_tree_model_filter_remove_root (GtkTreePath *src,
GtkTreePath *root)
{
GtkTreePath *retval;
gint i;
gint depth;
gint *indices;
if (gtk_tree_path_get_depth (src) <= gtk_tree_path_get_depth (root))
return NULL;
depth = gtk_tree_path_get_depth (src);
indices = gtk_tree_path_get_indices (src);
for (i = 0; i < gtk_tree_path_get_depth (root); i++)
if (indices[i] != gtk_tree_path_get_indices (root)[i])
return NULL;
retval = gtk_tree_path_new ();
for (; i < depth; i++)
gtk_tree_path_append_index (retval, indices[i]);
return retval;
}
static void
gtk_tree_model_filter_increment_stamp (GtkTreeModelFilter *filter)
{
do
{
filter->priv->stamp++;
}
while (filter->priv->stamp == 0);
gtk_tree_model_filter_clear_cache (filter);
}
static gboolean
gtk_tree_model_filter_visible (GtkTreeModelFilter *filter,
GtkTreeIter *child_iter)
{
if (filter->priv->visible_func)
{
return filter->priv->visible_func (filter->priv->child_model,
child_iter,
filter->priv->visible_data)
? TRUE : FALSE;
}
else if (filter->priv->visible_column >= 0)
{
GValue val = {0, };
gtk_tree_model_get_value (filter->priv->child_model, child_iter,
filter->priv->visible_column, &val);
if (g_value_get_boolean (&val))
{
g_value_unset (&val);
return TRUE;
}
g_value_unset (&val);
return FALSE;
}
/* no visible function set, so always visible */
return TRUE;
}
static void
gtk_tree_model_filter_clear_cache_helper (GtkTreeModelFilter *filter,
FilterLevel *level)
{
gint i;
g_assert (level);
for (i = 0; i < level->array->len; i++)
{
if (g_array_index (level->array, FilterElt, i).zero_ref_count > 0)
gtk_tree_model_filter_clear_cache_helper (filter, g_array_index (level->array, FilterElt, i).children);
}
if (level->ref_count == 0 && level != filter->priv->root)
{
gtk_tree_model_filter_free_level (filter, level);
return;
}
}
static FilterElt *
gtk_tree_model_filter_get_nth (GtkTreeModelFilter *filter,
FilterLevel *level,
int n)
{
if (level->array->len <= n)
return NULL;
return &g_array_index (level->array, FilterElt, n);
}
static gboolean
gtk_tree_model_filter_elt_is_visible_in_target (FilterLevel *level,
FilterElt *elt)
{
gint elt_index;
if (!elt->visible)
return FALSE;
if (level->parent_elt_index == -1)
return TRUE;
do
{
elt_index = level->parent_elt_index;
level = level->parent_level;
if (elt_index >= 0
&& !g_array_index (level->array, FilterElt, elt_index).visible)
return FALSE;
}
while (level);
return TRUE;
}
static FilterElt *
gtk_tree_model_filter_get_nth_visible (GtkTreeModelFilter *filter,
FilterLevel *level,
int n)
{
int i = 0;
FilterElt *elt;
if (level->visible_nodes <= n)
return NULL;
elt = FILTER_ELT (level->array->data);
while (!elt->visible)
elt++;
while (i < n)
{
if (elt->visible)
i++;
elt++;
}
while (!elt->visible)
elt++;
return elt;
}
static FilterElt *
gtk_tree_model_filter_fetch_child (GtkTreeModelFilter *filter,
FilterLevel *level,
gint offset,
gint *index)
{
gint i = 0;
gint start, middle, end;
gint len;
GtkTreePath *c_path = NULL;
GtkTreeIter c_iter;
GtkTreePath *c_parent_path = NULL;
GtkTreeIter c_parent_iter;
FilterElt elt;
/* check if child exists and is visible */
if (level->parent_elt_index >= 0)
{
c_parent_path =
gtk_tree_model_filter_elt_get_path (level->parent_level,
FILTER_LEVEL_PARENT_ELT (level),
filter->priv->virtual_root);
if (!c_parent_path)
return NULL;
}
else
{
if (filter->priv->virtual_root)
c_parent_path = gtk_tree_path_copy (filter->priv->virtual_root);
else
c_parent_path = NULL;
}
if (c_parent_path)
{
gtk_tree_model_get_iter (filter->priv->child_model,
&c_parent_iter,
c_parent_path);
len = gtk_tree_model_iter_n_children (filter->priv->child_model,
&c_parent_iter);
c_path = gtk_tree_path_copy (c_parent_path);
gtk_tree_path_free (c_parent_path);
}
else
{
len = gtk_tree_model_iter_n_children (filter->priv->child_model, NULL);
c_path = gtk_tree_path_new ();
}
gtk_tree_path_append_index (c_path, offset);
gtk_tree_model_get_iter (filter->priv->child_model, &c_iter, c_path);
gtk_tree_path_free (c_path);
if (offset >= len || !gtk_tree_model_filter_visible (filter, &c_iter))
return NULL;
/* add child */
elt.offset = offset;
elt.zero_ref_count = 0;
elt.ref_count = 0;
elt.children = NULL;
/* visibility should be FALSE as we don't emit row_inserted */
elt.visible = FALSE;
if (GTK_TREE_MODEL_FILTER_CACHE_CHILD_ITERS (filter))
elt.iter = c_iter;
/* find index (binary search on offset) */
start = 0;
end = level->array->len;
if (start != end)
{
while (start != end)
{
middle = (start + end) / 2;
if (g_array_index (level->array, FilterElt, middle).offset <= offset)
start = middle + 1;
else
end = middle;
}
if (g_array_index (level->array, FilterElt, middle).offset <= offset)
i = middle + 1;
else
i = middle;
}
else
i = 0;
g_array_insert_val (level->array, i, elt);
*index = i;
for (i = 0; i < level->array->len; i++)
{
FilterElt *e = &(g_array_index (level->array, FilterElt, i));
if (e->children)
e->children->parent_elt_index = i;
}
c_iter.stamp = filter->priv->stamp;
c_iter.user_data = level;
c_iter.user_data2 = &g_array_index (level->array, FilterElt, *index);
if (level->parent_level || filter->priv->virtual_root)
gtk_tree_model_filter_ref_node (GTK_TREE_MODEL (filter), &c_iter);
return &g_array_index (level->array, FilterElt, *index);
}
static void
gtk_tree_model_filter_remove_node (GtkTreeModelFilter *filter,
GtkTreeIter *iter)
{
FilterElt *elt, *parent;
FilterLevel *level, *parent_level;
gint i, length, parent_elt_index;
gboolean emit_child_toggled = FALSE;
level = FILTER_LEVEL (iter->user_data);
elt = FILTER_ELT (iter->user_data2);
parent_elt_index = level->parent_elt_index;
if (parent_elt_index >= 0)
parent = FILTER_LEVEL_PARENT_ELT (level);
else
parent = NULL;
parent_level = level->parent_level;
length = level->array->len;
/* we distinguish a couple of cases:
* - root level, length > 1: emit row-deleted and remove.
* - root level, length == 1: emit row-deleted and keep in cache.
* - level, length == 1: parent->ref_count > 1: emit row-deleted and keep.
* - level, length > 1: emit row-deleted and remove.
* - else, remove level.
*
* if level != root level and visible nodes == 0, emit row-has-child-toggled.
*/
if (level != filter->priv->root
&& level->visible_nodes == 0
&& parent
&& parent->visible)
emit_child_toggled = TRUE;
if (length > 1)
{
GtkTreePath *path;
FilterElt *tmp;
/* We emit row-deleted, and remove the node from the cache.
* If it has any children, these will be removed here as well.
*/
if (elt->children)
gtk_tree_model_filter_free_level (filter, elt->children);
path = gtk_tree_model_get_path (GTK_TREE_MODEL (filter), iter);
elt->visible = FALSE;
gtk_tree_model_filter_increment_stamp (filter);
iter->stamp = filter->priv->stamp;
gtk_tree_model_row_deleted (GTK_TREE_MODEL (filter), path);
gtk_tree_path_free (path);
while (elt->ref_count > 1)
gtk_tree_model_filter_real_unref_node (GTK_TREE_MODEL (filter),
iter, FALSE);
if (parent_level || filter->priv->virtual_root)
gtk_tree_model_filter_unref_node (GTK_TREE_MODEL (filter), iter);
else if (elt->ref_count > 0)
gtk_tree_model_filter_real_unref_node (GTK_TREE_MODEL (filter),
iter, FALSE);
/* remove the node */
tmp = bsearch_elt_with_offset (level->array, elt->offset, &i);
if (tmp)
{
g_array_remove_index (level->array, i);
i--;
for (i = MAX (i, 0); i < level->array->len; i++)
{
/* NOTE: here we do *not* decrease offsets, because the node was
* not removed from the child model
*/
elt = &g_array_index (level->array, FilterElt, i);
if (elt->children)
elt->children->parent_elt_index = i;
}
}
}
else if ((length == 1 && parent && parent->ref_count > 1)
|| (length == 1 && level == filter->priv->root))
{
GtkTreePath *path;
/* We emit row-deleted, but keep the node in the cache and
* referenced. Its children will be removed.
*/
if (elt->children)
{
gtk_tree_model_filter_free_level (filter, elt->children);
elt->children = NULL;
}
path = gtk_tree_model_get_path (GTK_TREE_MODEL (filter), iter);
elt->visible = FALSE;
gtk_tree_model_filter_increment_stamp (filter);
gtk_tree_model_row_deleted (GTK_TREE_MODEL (filter), path);
gtk_tree_path_free (path);
}
else
{
GtkTreePath *path;
/* Blow level away, including any child levels */
path = gtk_tree_model_get_path (GTK_TREE_MODEL (filter), iter);
elt->visible = FALSE;
gtk_tree_model_filter_increment_stamp (filter);
iter->stamp = filter->priv->stamp;
gtk_tree_model_row_deleted (GTK_TREE_MODEL (filter), path);
gtk_tree_path_free (path);
while (elt->ref_count > 1)
gtk_tree_model_filter_real_unref_node (GTK_TREE_MODEL (filter),
iter, FALSE);
gtk_tree_model_filter_free_level (filter, level);
}
if (emit_child_toggled)
{
GtkTreeIter piter;
GtkTreePath *ppath;
piter.stamp = filter->priv->stamp;
piter.user_data = parent_level;
piter.user_data2 = parent;
ppath = gtk_tree_model_get_path (GTK_TREE_MODEL (filter), &piter);
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (filter),
ppath, &piter);
gtk_tree_path_free (ppath);
}
}
static void
gtk_tree_model_filter_update_children (GtkTreeModelFilter *filter,
FilterLevel *level,
FilterElt *elt)
{
GtkTreeIter c_iter;
GtkTreeIter iter;
if (!elt->visible)
return;
iter.stamp = filter->priv->stamp;
iter.user_data = level;
iter.user_data2 = elt;
gtk_tree_model_filter_convert_iter_to_child_iter (filter, &c_iter, &iter);
if (gtk_tree_model_iter_has_child (filter->priv->child_model, &c_iter))
{
GtkTreePath *path = gtk_tree_model_get_path (GTK_TREE_MODEL (filter),
&iter);
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (filter),
path,
&iter);
if (path)
gtk_tree_path_free (path);
}
}
static FilterElt *
bsearch_elt_with_offset (GArray *array,
gint offset,
gint *index)
{
gint start, middle, end;
FilterElt *elt;
start = 0;
end = array->len;
if (array->len < 1)
return NULL;
if (start == end)
{
elt = &g_array_index (array, FilterElt, 0);
if (elt->offset == offset)
{
*index = 0;
return elt;
}
else
return NULL;
}
do
{
middle = (start + end) / 2;
elt = &g_array_index (array, FilterElt, middle);
if (elt->offset < offset)
start = middle + 1;
else if (elt->offset > offset)
end = middle;
else
break;
}
while (start != end);
if (elt->offset == offset)
{
*index = middle;
return elt;
}
return NULL;
}
/* TreeModel signals */
static void
gtk_tree_model_filter_row_changed (GtkTreeModel *c_model,
GtkTreePath *c_path,
GtkTreeIter *c_iter,
gpointer data)
{
GtkTreeModelFilter *filter = GTK_TREE_MODEL_FILTER (data);
GtkTreeIter iter;
GtkTreeIter children;
GtkTreeIter real_c_iter;
GtkTreePath *path = NULL;
FilterElt *elt;
FilterLevel *level;
gboolean requested_state;
gboolean current_state;
gboolean free_c_path = FALSE;
gboolean signals_emitted = FALSE;
g_return_if_fail (c_path != NULL || c_iter != NULL);
if (!c_path)
{
c_path = gtk_tree_model_get_path (c_model, c_iter);
free_c_path = TRUE;
}
if (c_iter)
real_c_iter = *c_iter;
else
gtk_tree_model_get_iter (c_model, &real_c_iter, c_path);
/* is this node above the virtual root? */
if (filter->priv->virtual_root
&& (gtk_tree_path_get_depth (filter->priv->virtual_root)
>= gtk_tree_path_get_depth (c_path)))
goto done;
/* what's the requested state? */
requested_state = gtk_tree_model_filter_visible (filter, &real_c_iter);
/* now, let's see whether the item is there */
path = gtk_real_tree_model_filter_convert_child_path_to_path (filter,
c_path,
FALSE,
FALSE);
if (path)
{
gtk_tree_model_filter_get_iter_full (GTK_TREE_MODEL (filter),
&iter, path);
current_state = FILTER_ELT (iter.user_data2)->visible;
}
else
current_state = FALSE;
if (current_state == FALSE && requested_state == FALSE)
/* no changes required */
goto done;
if (current_state == TRUE && requested_state == FALSE)
{
/* get rid of this node */
level = FILTER_LEVEL (iter.user_data);
level->visible_nodes--;
gtk_tree_model_filter_remove_node (filter, &iter);
goto done;
}
if (current_state == TRUE && requested_state == TRUE)
{
/* propagate the signal; also get a path taking only visible
* nodes into account.
*/
gtk_tree_path_free (path);
path = gtk_tree_model_get_path (GTK_TREE_MODEL (filter), &iter);
level = FILTER_LEVEL (iter.user_data);
elt = FILTER_ELT (iter.user_data2);
if (gtk_tree_model_filter_elt_is_visible_in_target (level, elt))
{
gtk_tree_model_row_changed (GTK_TREE_MODEL (filter), path, &iter);
/* and update the children */
if (gtk_tree_model_iter_children (c_model, &children, &real_c_iter))
gtk_tree_model_filter_update_children (filter, level, elt);
}
goto done;
}
/* only current == FALSE and requested == TRUE is left,
* pull in the child
*/
g_return_if_fail (current_state == FALSE && requested_state == TRUE);
/* make sure the new item has been pulled in */
if (!filter->priv->root)
{
FilterLevel *root;
gtk_tree_model_filter_build_level (filter, NULL, -1, TRUE);
/* We will only proceed below if the item is found. If the item
* is found, we can be sure row-inserted has just been emitted
* for it.
*/
signals_emitted = TRUE;
root = FILTER_LEVEL (filter->priv->root);
}
gtk_tree_model_filter_increment_stamp (filter);
/* We need to allow to build new levels, because we are then pulling
* in a child in an invisible level. We only want to find path if it
* is in a visible level (and thus has a parent that is visible).
*/
if (!path)
path = gtk_real_tree_model_filter_convert_child_path_to_path (filter,
c_path,
FALSE,
TRUE);
if (!path)
/* parent is probably being filtered out */
goto done;
gtk_tree_model_filter_get_iter_full (GTK_TREE_MODEL (filter), &iter, path);
level = FILTER_LEVEL (iter.user_data);
elt = FILTER_ELT (iter.user_data2);
/* elt->visible can be TRUE at this point if it was pulled in above */
if (!elt->visible)
{
elt->visible = TRUE;
level->visible_nodes++;
}
if (gtk_tree_model_filter_elt_is_visible_in_target (level, elt))
{
/* visibility changed -- reget path */
gtk_tree_path_free (path);
path = gtk_tree_model_get_path (GTK_TREE_MODEL (filter), &iter);
if (!signals_emitted)
gtk_tree_model_row_inserted (GTK_TREE_MODEL (filter), path, &iter);
if (level->parent_level && level->visible_nodes == 1)
{
/* We know that this is the first visible node in this level, so
* we need to emit row-has-child-toggled on the parent. This
* does not apply to the root level.
*/
gtk_tree_path_up (path);
gtk_tree_model_get_iter (GTK_TREE_MODEL (filter), &iter, path);
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (filter),
path,
&iter);
}
if (!signals_emitted
&& gtk_tree_model_iter_children (c_model, &children, c_iter))
gtk_tree_model_filter_update_children (filter, level, elt);
}
done:
if (path)
gtk_tree_path_free (path);
if (free_c_path)
gtk_tree_path_free (c_path);
}
static void
gtk_tree_model_filter_row_inserted (GtkTreeModel *c_model,
GtkTreePath *c_path,
GtkTreeIter *c_iter,
gpointer data)
{
GtkTreeModelFilter *filter = GTK_TREE_MODEL_FILTER (data);
GtkTreePath *path = NULL;
GtkTreePath *real_path = NULL;
GtkTreeIter iter;
GtkTreeIter real_c_iter;
FilterElt *elt;
FilterLevel *level;
FilterLevel *parent_level;
gint i = 0, offset;
gboolean free_c_path = FALSE;
g_return_if_fail (c_path != NULL || c_iter != NULL);
if (!c_path)
{
c_path = gtk_tree_model_get_path (c_model, c_iter);
free_c_path = TRUE;
}
if (c_iter)
real_c_iter = *c_iter;
else
gtk_tree_model_get_iter (c_model, &real_c_iter, c_path);
/* the row has already been inserted. so we need to fixup the
* virtual root here first
*/
if (filter->priv->virtual_root)
{
if (gtk_tree_path_get_depth (filter->priv->virtual_root) >=
gtk_tree_path_get_depth (c_path))
{
gint level;
gint *v_indices, *c_indices;
gboolean common_prefix = TRUE;
level = gtk_tree_path_get_depth (c_path) - 1;
v_indices = gtk_tree_path_get_indices (filter->priv->virtual_root);
c_indices = gtk_tree_path_get_indices (c_path);
for (i = 0; i < level; i++)
if (v_indices[i] != c_indices[i])
{
common_prefix = FALSE;
break;
}
if (common_prefix && v_indices[level] >= c_indices[level])
(v_indices[level])++;
}
}
if (!filter->priv->root)
{
/* No point in building the level if this node is not visible. */
if (!filter->priv->virtual_root
&& !gtk_tree_model_filter_visible (filter, c_iter))
goto done;
/* build level will pull in the new child */
gtk_tree_model_filter_build_level (filter, NULL, -1, FALSE);
if (filter->priv->root
&& FILTER_LEVEL (filter->priv->root)->visible_nodes)
goto done_and_emit;
else
goto done;
}
parent_level = level = FILTER_LEVEL (filter->priv->root);
/* subtract virtual root if necessary */
if (filter->priv->virtual_root)
{
real_path = gtk_tree_model_filter_remove_root (c_path,
filter->priv->virtual_root);
/* not our child */
if (!real_path)
goto done;
}
else
real_path = gtk_tree_path_copy (c_path);
if (gtk_tree_path_get_depth (real_path) - 1 >= 1)
{
/* find the parent level */
while (i < gtk_tree_path_get_depth (real_path) - 1)
{
gint j;
if (!level)
/* we don't cover this signal */
goto done;
elt = bsearch_elt_with_offset (level->array,
gtk_tree_path_get_indices (real_path)[i],
&j);
if (!elt)
/* parent is probably being filtered out */
goto done;
if (!elt->children)
{
GtkTreePath *tmppath;
GtkTreeIter tmpiter;
tmpiter.stamp = filter->priv->stamp;
tmpiter.user_data = level;
tmpiter.user_data2 = elt;
tmppath = gtk_tree_model_get_path (GTK_TREE_MODEL (data),
&tmpiter);
if (tmppath)
{
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (data),
tmppath, &tmpiter);
gtk_tree_path_free (tmppath);
}
/* not covering this signal */
goto done;
}
level = elt->children;
parent_level = level;
i++;
}
}
if (!parent_level)
goto done;
/* let's try to insert the value */
offset = gtk_tree_path_get_indices (real_path)[gtk_tree_path_get_depth (real_path) - 1];
/* update the offsets, yes if we didn't insert the node above, there will
* be a gap here. This will be filled with the node (via fetch_child) when
* it becomes visible
*/
for (i = 0; i < level->array->len; i++)
{
FilterElt *e = &g_array_index (level->array, FilterElt, i);
if ((e->offset >= offset))
e->offset++;
}
/* only insert when visible */
if (gtk_tree_model_filter_visible (filter, &real_c_iter))
{
FilterElt felt;
if (GTK_TREE_MODEL_FILTER_CACHE_CHILD_ITERS (filter))
felt.iter = real_c_iter;
felt.offset = offset;
felt.zero_ref_count = 0;
felt.ref_count = 0;
felt.visible = TRUE;
felt.children = NULL;
for (i = 0; i < level->array->len; i++)
if (g_array_index (level->array, FilterElt, i).offset > offset)
break;
level->visible_nodes++;
g_array_insert_val (level->array, i, felt);
if (level->parent_level || filter->priv->virtual_root)
{
GtkTreeIter f_iter;
f_iter.stamp = filter->priv->stamp;
f_iter.user_data = level;
f_iter.user_data2 = &g_array_index (level->array, FilterElt, i);
gtk_tree_model_filter_ref_node (GTK_TREE_MODEL (filter), &f_iter);
}
}
/* another iteration to update the references of children to parents. */
for (i = 0; i < level->array->len; i++)
{
FilterElt *e = &g_array_index (level->array, FilterElt, i);
if (e->children)
e->children->parent_elt_index = i;
}
/* don't emit the signal if we aren't visible */
if (!gtk_tree_model_filter_visible (filter, &real_c_iter))
goto done;
done_and_emit:
/* NOTE: pass c_path here and NOT real_path. This function does
* root subtraction itself
*/
path = gtk_real_tree_model_filter_convert_child_path_to_path (filter,
c_path,
FALSE, TRUE);
if (!path)
goto done;
gtk_tree_model_filter_increment_stamp (filter);
gtk_tree_model_filter_get_iter_full (GTK_TREE_MODEL (data), &iter, path);
/* get a path taking only visible nodes into account */
gtk_tree_path_free (path);
path = gtk_tree_model_get_path (GTK_TREE_MODEL (data), &iter);
gtk_tree_model_row_inserted (GTK_TREE_MODEL (data), path, &iter);
gtk_tree_path_free (path);
done:
if (real_path)
gtk_tree_path_free (real_path);
if (free_c_path)
gtk_tree_path_free (c_path);
}
static void
gtk_tree_model_filter_row_has_child_toggled (GtkTreeModel *c_model,
GtkTreePath *c_path,
GtkTreeIter *c_iter,
gpointer data)
{
GtkTreeModelFilter *filter = GTK_TREE_MODEL_FILTER (data);
GtkTreePath *path;
GtkTreeIter iter;
FilterLevel *level;
FilterElt *elt;
gboolean requested_state;
g_return_if_fail (c_path != NULL && c_iter != NULL);
/* If we get row-has-child-toggled on the virtual root, and there is
* no root level; try to build it now.
*/
if (filter->priv->virtual_root && !filter->priv->root
&& !gtk_tree_path_compare (c_path, filter->priv->virtual_root))
{
gtk_tree_model_filter_build_level (filter, NULL, -1, TRUE);
return;
}
/* For all other levels, there is a chance that the visibility state
* of the parent has changed now.
*/
path = gtk_real_tree_model_filter_convert_child_path_to_path (filter,
c_path,
FALSE,
TRUE);
if (!path)
return;
gtk_tree_model_filter_get_iter_full (GTK_TREE_MODEL (data), &iter, path);
level = FILTER_LEVEL (iter.user_data);
elt = FILTER_ELT (iter.user_data2);
gtk_tree_path_free (path);
requested_state = gtk_tree_model_filter_visible (filter, c_iter);
if (!elt->visible && !requested_state)
{
/* The parent node currently is not visible and will not become
* visible, so we will not pass on the row-has-child-toggled event.
*/
return;
}
else if (elt->visible && !requested_state)
{
/* The node is no longer visible, so it has to be removed.
* _remove_node() takes care of emitting row-has-child-toggled
* when required.
*/
level->visible_nodes--;
gtk_tree_model_filter_remove_node (filter, &iter);
return;
}
else if (!elt->visible && requested_state)
{
elt->visible = TRUE;
level->visible_nodes++;
/* Only insert if the parent is visible in the target */
if (gtk_tree_model_filter_elt_is_visible_in_target (level, elt))
{
path = gtk_tree_model_get_path (GTK_TREE_MODEL (filter), &iter);
gtk_tree_model_row_inserted (GTK_TREE_MODEL (filter), path, &iter);
gtk_tree_path_free (path);
/* We do not update children now, because that will happen
* below.
*/
}
}
/* For the remaining possibility, elt->visible && requested_state
* no action is required.
*/
/* If this node is referenced and has children, build the level so we
* can monitor it for changes.
*/
if (elt->ref_count > 1 && gtk_tree_model_iter_has_child (c_model, c_iter))
gtk_tree_model_filter_build_level (filter, level,
FILTER_LEVEL_ELT_INDEX (level, elt),
TRUE);
/* get a path taking only visible nodes into account */
path = gtk_tree_model_get_path (GTK_TREE_MODEL (data), &iter);
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (data), path, &iter);
gtk_tree_path_free (path);
}
static void
gtk_tree_model_filter_row_deleted (GtkTreeModel *c_model,
GtkTreePath *c_path,
gpointer data)
{
GtkTreeModelFilter *filter = GTK_TREE_MODEL_FILTER (data);
GtkTreePath *path;
GtkTreeIter iter;
FilterElt *elt;
FilterLevel *level, *parent_level = NULL;
gboolean emit_child_toggled = FALSE;
gint offset;
gint i;
gint parent_elt_index = -1;
g_return_if_fail (c_path != NULL);
/* special case the deletion of an ancestor of the virtual root */
if (filter->priv->virtual_root &&
(gtk_tree_path_is_ancestor (c_path, filter->priv->virtual_root) ||
!gtk_tree_path_compare (c_path, filter->priv->virtual_root)))
{
gint i;
GtkTreePath *path;
FilterLevel *level = FILTER_LEVEL (filter->priv->root);
gtk_tree_model_filter_unref_path (filter, filter->priv->virtual_root);
filter->priv->virtual_root_deleted = TRUE;
if (!level)
return;
/* remove everything in the filter model
*
* For now, we just iterate over the root level and emit a
* row_deleted for each FilterElt. Not sure if this is correct.
*/
gtk_tree_model_filter_increment_stamp (filter);
path = gtk_tree_path_new ();
gtk_tree_path_append_index (path, 0);
for (i = 0; i < level->visible_nodes; i++)
gtk_tree_model_row_deleted (GTK_TREE_MODEL (data), path);
gtk_tree_path_free (path);
gtk_tree_model_filter_free_level (filter, filter->priv->root);
return;
}
/* fixup virtual root */
if (filter->priv->virtual_root)
{
if (gtk_tree_path_get_depth (filter->priv->virtual_root) >=
gtk_tree_path_get_depth (c_path))
{
gint level;
gint *v_indices, *c_indices;
gboolean common_prefix = TRUE;
level = gtk_tree_path_get_depth (c_path) - 1;
v_indices = gtk_tree_path_get_indices (filter->priv->virtual_root);
c_indices = gtk_tree_path_get_indices (c_path);
for (i = 0; i < level; i++)
if (v_indices[i] != c_indices[i])
{
common_prefix = FALSE;
break;
}
if (common_prefix && v_indices[level] > c_indices[level])
(v_indices[level])--;
}
}
path = gtk_real_tree_model_filter_convert_child_path_to_path (filter,
c_path,
FALSE,
FALSE);
if (!path)
{
/* The node deleted in the child model is not visible in the
* filter model. We will not emit a signal, just fixup the offsets
* of the other nodes.
*/
GtkTreePath *real_path;
if (!filter->priv->root)
return;
level = FILTER_LEVEL (filter->priv->root);
/* subtract vroot if necessary */
if (filter->priv->virtual_root)
{
real_path = gtk_tree_model_filter_remove_root (c_path,
filter->priv->virtual_root);
/* we don't handle this */
if (!real_path)
return;
}
else
real_path = gtk_tree_path_copy (c_path);
i = 0;
if (gtk_tree_path_get_depth (real_path) - 1 >= 1)
{
/* find the level where the deletion occurred */
while (i < gtk_tree_path_get_depth (real_path) - 1)
{
gint j;
if (!level)
{
/* we don't cover this */
gtk_tree_path_free (real_path);
return;
}
elt = bsearch_elt_with_offset (level->array,
gtk_tree_path_get_indices (real_path)[i],
&j);
if (!elt || !elt->children)
{
/* parent is filtered out, so no level */
gtk_tree_path_free (real_path);
return;
}
level = elt->children;
i++;
}
}
offset = gtk_tree_path_get_indices (real_path)[gtk_tree_path_get_depth (real_path) - 1];
gtk_tree_path_free (real_path);
if (!level)
return;
/* decrease offset of all nodes following the deleted node */
for (i = 0; i < level->array->len; i++)
{
elt = &g_array_index (level->array, FilterElt, i);
if (elt->offset > offset)
elt->offset--;
if (elt->children)
elt->children->parent_elt_index = i;
}
return;
}
/* a node was deleted, which was in our cache */
gtk_tree_model_filter_get_iter_full (GTK_TREE_MODEL (data), &iter, path);
level = FILTER_LEVEL (iter.user_data);
elt = FILTER_ELT (iter.user_data2);
offset = elt->offset;
if (elt->visible)
{
/* get a path taking only visible nodes into account */
gtk_tree_path_free (path);
path = gtk_tree_model_get_path (GTK_TREE_MODEL (filter), &iter);
level->visible_nodes--;
if (level->visible_nodes == 0)
{
emit_child_toggled = TRUE;
parent_level = level->parent_level;
parent_elt_index = level->parent_elt_index;
}
/* emit row_deleted */
gtk_tree_model_filter_increment_stamp (filter);
gtk_tree_model_row_deleted (GTK_TREE_MODEL (data), path);
iter.stamp = filter->priv->stamp;
}
/* The filter model's reference on the child node is released
* below.
*/
while (elt->ref_count > 1)
gtk_tree_model_filter_real_unref_node (GTK_TREE_MODEL (data), &iter,
FALSE);
if (level->array->len == 1)
{
/* kill level */
gtk_tree_model_filter_free_level (filter, level);
}
else
{
FilterElt *tmp;
/* release the filter model's reference on the node */
if (level->parent_level || filter->priv->virtual_root)
gtk_tree_model_filter_unref_node (GTK_TREE_MODEL (filter), &iter);
else if (elt->ref_count > 0)
gtk_tree_model_filter_real_unref_node (GTK_TREE_MODEL (data), &iter,
FALSE);
/* remove the row */
tmp = bsearch_elt_with_offset (level->array, elt->offset, &i);
offset = tmp->offset;
g_array_remove_index (level->array, i);
i--;
for (i = MAX (i, 0); i < level->array->len; i++)
{
elt = &g_array_index (level->array, FilterElt, i);
if (elt->offset > offset)
elt->offset--;
if (elt->children)
elt->children->parent_elt_index = i;
}
}
if (emit_child_toggled && parent_level)
{
GtkTreeIter iter;
GtkTreePath *path;
iter.stamp = filter->priv->stamp;
iter.user_data = parent_level;
iter.user_data2 = &g_array_index (parent_level->array, FilterElt, parent_elt_index);
/* We set in_row_deleted to TRUE to avoid a level build triggered
* by row-has-child-toggled (parent model could call iter_has_child
* for example).
*/
filter->priv->in_row_deleted = TRUE;
path = gtk_tree_model_get_path (GTK_TREE_MODEL (filter), &iter);
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (filter),
path, &iter);
gtk_tree_path_free (path);
filter->priv->in_row_deleted = FALSE;
}
gtk_tree_path_free (path);
}
static void
gtk_tree_model_filter_rows_reordered (GtkTreeModel *c_model,
GtkTreePath *c_path,
GtkTreeIter *c_iter,
gint *new_order,
gpointer data)
{
FilterElt *elt;
FilterLevel *level;
GtkTreeModelFilter *filter = GTK_TREE_MODEL_FILTER (data);
GtkTreePath *path;
GtkTreeIter iter;
gint *tmp_array;
gint i, j, elt_count;
gint length;
GArray *new_array;
g_return_if_fail (new_order != NULL);
if (c_path == NULL || gtk_tree_path_get_depth (c_path) == 0)
{
length = gtk_tree_model_iter_n_children (c_model, NULL);
if (filter->priv->virtual_root)
{
gint new_pos = -1;
/* reorder root level of path */
for (i = 0; i < length; i++)
if (new_order[i] == gtk_tree_path_get_indices (filter->priv->virtual_root)[0])
new_pos = i;
if (new_pos < 0)
return;
gtk_tree_path_get_indices (filter->priv->virtual_root)[0] = new_pos;
return;
}
path = gtk_tree_path_new ();
level = FILTER_LEVEL (filter->priv->root);
}
else
{
GtkTreeIter child_iter;
/* virtual root anchor reordering */
if (filter->priv->virtual_root &&
gtk_tree_path_is_ancestor (c_path, filter->priv->virtual_root))
{
gint new_pos = -1;
gint length;
gint level;
GtkTreeIter real_c_iter;
level = gtk_tree_path_get_depth (c_path);
if (c_iter)
real_c_iter = *c_iter;
else
gtk_tree_model_get_iter (c_model, &real_c_iter, c_path);
length = gtk_tree_model_iter_n_children (c_model, &real_c_iter);
for (i = 0; i < length; i++)
if (new_order[i] == gtk_tree_path_get_indices (filter->priv->virtual_root)[level])
new_pos = i;
if (new_pos < 0)
return;
gtk_tree_path_get_indices (filter->priv->virtual_root)[level] = new_pos;
return;
}
path = gtk_real_tree_model_filter_convert_child_path_to_path (filter,
c_path,
FALSE,
FALSE);
if (!path && filter->priv->virtual_root &&
gtk_tree_path_compare (c_path, filter->priv->virtual_root))
return;
if (!path && !filter->priv->virtual_root)
return;
if (!path)
{
/* root level mode */
if (!c_iter)
gtk_tree_model_get_iter (c_model, c_iter, c_path);
length = gtk_tree_model_iter_n_children (c_model, c_iter);
path = gtk_tree_path_new ();
level = FILTER_LEVEL (filter->priv->root);
}
else
{
gtk_tree_model_filter_get_iter_full (GTK_TREE_MODEL (data),
&iter, path);
level = FILTER_LEVEL (iter.user_data);
elt = FILTER_ELT (iter.user_data2);
if (!elt->children)
{
gtk_tree_path_free (path);
return;
}
level = elt->children;
gtk_tree_model_filter_convert_iter_to_child_iter (GTK_TREE_MODEL_FILTER (filter), &child_iter, &iter);
length = gtk_tree_model_iter_n_children (c_model, &child_iter);
}
}
if (!level || level->array->len < 1)
{
gtk_tree_path_free (path);
return;
}
/* NOTE: we do not bail out here if level->array->len < 2 like
* GtkTreeModelSort does. This because we do some special tricky
* reordering.
*/
/* construct a new array */
new_array = g_array_sized_new (FALSE, FALSE, sizeof (FilterElt),
level->array->len);
tmp_array = g_new (gint, level->array->len);
for (i = 0, elt_count = 0; i < length; i++)
{
FilterElt *e = NULL;
gint old_offset = -1;
for (j = 0; j < level->array->len; j++)
if (g_array_index (level->array, FilterElt, j).offset == new_order[i])
{
e = &g_array_index (level->array, FilterElt, j);
old_offset = j;
break;
}
if (!e)
continue;
tmp_array[elt_count] = old_offset;
g_array_append_val (new_array, *e);
g_array_index (new_array, FilterElt, elt_count).offset = i;
elt_count++;
}
g_array_free (level->array, TRUE);
level->array = new_array;
/* fix up stuff */
for (i = 0; i < level->array->len; i++)
{
FilterElt *e = &g_array_index (level->array, FilterElt, i);
if (e->children)
e->children->parent_elt_index = i;
}
/* emit rows_reordered */
if (!gtk_tree_path_get_indices (path))
gtk_tree_model_rows_reordered (GTK_TREE_MODEL (data), path, NULL,
tmp_array);
else
{
/* get a path taking only visible nodes into account */
gtk_tree_path_free (path);
path = gtk_tree_model_get_path (GTK_TREE_MODEL (data), &iter);
gtk_tree_model_rows_reordered (GTK_TREE_MODEL (data), path, &iter,
tmp_array);
}
/* done */
g_free (tmp_array);
gtk_tree_path_free (path);
}
/* TreeModelIface implementation */
static GtkTreeModelFlags
gtk_tree_model_filter_get_flags (GtkTreeModel *model)
{
GtkTreeModelFlags flags;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (model), 0);
g_return_val_if_fail (GTK_TREE_MODEL_FILTER (model)->priv->child_model != NULL, 0);
flags = gtk_tree_model_get_flags (GTK_TREE_MODEL_FILTER (model)->priv->child_model);
if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
return GTK_TREE_MODEL_LIST_ONLY;
return 0;
}
static gint
gtk_tree_model_filter_get_n_columns (GtkTreeModel *model)
{
GtkTreeModelFilter *filter = (GtkTreeModelFilter *)model;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (model), 0);
g_return_val_if_fail (filter->priv->child_model != NULL, 0);
if (filter->priv->child_model == NULL)
return 0;
/* so we can't modify the modify func after this ... */
filter->priv->modify_func_set = TRUE;
if (filter->priv->modify_n_columns > 0)
return filter->priv->modify_n_columns;
return gtk_tree_model_get_n_columns (filter->priv->child_model);
}
static GType
gtk_tree_model_filter_get_column_type (GtkTreeModel *model,
gint index)
{
GtkTreeModelFilter *filter = (GtkTreeModelFilter *)model;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (model), G_TYPE_INVALID);
g_return_val_if_fail (filter->priv->child_model != NULL, G_TYPE_INVALID);
/* so we can't modify the modify func after this ... */
filter->priv->modify_func_set = TRUE;
if (filter->priv->modify_types)
{
g_return_val_if_fail (index < filter->priv->modify_n_columns, G_TYPE_INVALID);
return filter->priv->modify_types[index];
}
return gtk_tree_model_get_column_type (filter->priv->child_model, index);
}
/* A special case of _get_iter; this function can also get iters which
* are not visible. These iters should ONLY be passed internally, never
* pass those along with a signal emission.
*/
static gboolean
gtk_tree_model_filter_get_iter_full (GtkTreeModel *model,
GtkTreeIter *iter,
GtkTreePath *path)
{
GtkTreeModelFilter *filter = (GtkTreeModelFilter *)model;
gint *indices;
FilterLevel *level;
FilterElt *elt;
gint depth, i;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (model), FALSE);
g_return_val_if_fail (filter->priv->child_model != NULL, FALSE);
indices = gtk_tree_path_get_indices (path);
if (filter->priv->root == NULL)
gtk_tree_model_filter_build_level (filter, NULL, -1, FALSE);
level = FILTER_LEVEL (filter->priv->root);
depth = gtk_tree_path_get_depth (path);
if (!depth)
{
iter->stamp = 0;
return FALSE;
}
for (i = 0; i < depth - 1; i++)
{
if (!level || indices[i] >= level->array->len)
{
return FALSE;
}
elt = gtk_tree_model_filter_get_nth (filter, level, indices[i]);
if (!elt->children)
gtk_tree_model_filter_build_level (filter, level,
FILTER_LEVEL_ELT_INDEX (level, elt),
FALSE);
level = elt->children;
}
if (!level || indices[i] >= level->array->len)
{
iter->stamp = 0;
return FALSE;
}
iter->stamp = filter->priv->stamp;
iter->user_data = level;
elt = gtk_tree_model_filter_get_nth (filter, level, indices[depth - 1]);
iter->user_data2 = elt;
return TRUE;
}
static gboolean
gtk_tree_model_filter_get_iter (GtkTreeModel *model,
GtkTreeIter *iter,
GtkTreePath *path)
{
GtkTreeModelFilter *filter = (GtkTreeModelFilter *)model;
gint *indices;
FilterLevel *level;
FilterElt *elt;
gint depth, i;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (model), FALSE);
g_return_val_if_fail (filter->priv->child_model != NULL, FALSE);
indices = gtk_tree_path_get_indices (path);
if (filter->priv->root == NULL)
gtk_tree_model_filter_build_level (filter, NULL, -1, FALSE);
level = FILTER_LEVEL (filter->priv->root);
depth = gtk_tree_path_get_depth (path);
if (!depth)
{
iter->stamp = 0;
return FALSE;
}
for (i = 0; i < depth - 1; i++)
{
if (!level || indices[i] >= level->visible_nodes)
{
return FALSE;
}
elt = gtk_tree_model_filter_get_nth_visible (filter, level, indices[i]);
if (!elt->children)
gtk_tree_model_filter_build_level (filter, level,
FILTER_LEVEL_ELT_INDEX (level, elt),
FALSE);
level = elt->children;
}
if (!level || indices[i] >= level->visible_nodes)
{
iter->stamp = 0;
return FALSE;
}
iter->stamp = filter->priv->stamp;
iter->user_data = level;
elt = gtk_tree_model_filter_get_nth_visible (filter, level,
indices[depth - 1]);
iter->user_data2 = elt;
return TRUE;
}
static GtkTreePath *
gtk_tree_model_filter_get_path (GtkTreeModel *model,
GtkTreeIter *iter)
{
GtkTreePath *retval;
FilterLevel *level;
FilterElt *elt;
gint elt_index;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (model), NULL);
g_return_val_if_fail (GTK_TREE_MODEL_FILTER (model)->priv->child_model != NULL, NULL);
g_return_val_if_fail (GTK_TREE_MODEL_FILTER (model)->priv->stamp == iter->stamp, NULL);
level = iter->user_data;
elt = iter->user_data2;
elt_index = FILTER_LEVEL_ELT_INDEX (level, elt);
if (!elt->visible)
return NULL;
retval = gtk_tree_path_new ();
while (level)
{
int i = 0, index = 0;
while (i < elt_index)
{
if (g_array_index (level->array, FilterElt, i).visible)
index++;
i++;
g_assert (i < level->array->len);
}
gtk_tree_path_prepend_index (retval, index);
elt_index = level->parent_elt_index;
level = level->parent_level;
}
return retval;
}
static void
gtk_tree_model_filter_get_value (GtkTreeModel *model,
GtkTreeIter *iter,
gint column,
GValue *value)
{
GtkTreeIter child_iter;
GtkTreeModelFilter *filter = GTK_TREE_MODEL_FILTER (model);
g_return_if_fail (GTK_IS_TREE_MODEL_FILTER (model));
g_return_if_fail (GTK_TREE_MODEL_FILTER (model)->priv->child_model != NULL);
g_return_if_fail (GTK_TREE_MODEL_FILTER (model)->priv->stamp == iter->stamp);
if (filter->priv->modify_func)
{
g_return_if_fail (column < filter->priv->modify_n_columns);
g_value_init (value, filter->priv->modify_types[column]);
filter->priv->modify_func (model,
iter,
value,
column,
filter->priv->modify_data);
return;
}
gtk_tree_model_filter_convert_iter_to_child_iter (GTK_TREE_MODEL_FILTER (model), &child_iter, iter);
gtk_tree_model_get_value (GTK_TREE_MODEL_FILTER (model)->priv->child_model,
&child_iter, column, value);
}
static gboolean
gtk_tree_model_filter_iter_next (GtkTreeModel *model,
GtkTreeIter *iter)
{
int i;
FilterLevel *level;
FilterElt *elt;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (model), FALSE);
g_return_val_if_fail (GTK_TREE_MODEL_FILTER (model)->priv->child_model != NULL, FALSE);
g_return_val_if_fail (GTK_TREE_MODEL_FILTER (model)->priv->stamp == iter->stamp, FALSE);
level = iter->user_data;
elt = iter->user_data2;
i = elt - FILTER_ELT (level->array->data);
while (i < level->array->len - 1)
{
i++;
elt++;
if (elt->visible)
{
iter->user_data2 = elt;
return TRUE;
}
}
/* no next visible iter */
iter->stamp = 0;
return FALSE;
}
static gboolean
gtk_tree_model_filter_iter_children (GtkTreeModel *model,
GtkTreeIter *iter,
GtkTreeIter *parent)
{
GtkTreeModelFilter *filter = (GtkTreeModelFilter *)model;
FilterLevel *level;
iter->stamp = 0;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (model), FALSE);
g_return_val_if_fail (filter->priv->child_model != NULL, FALSE);
if (parent)
g_return_val_if_fail (filter->priv->stamp == parent->stamp, FALSE);
if (!parent)
{
int i = 0;
if (!filter->priv->root)
gtk_tree_model_filter_build_level (filter, NULL, -1, FALSE);
if (!filter->priv->root)
return FALSE;
level = filter->priv->root;
if (!level->visible_nodes)
return FALSE;
iter->stamp = filter->priv->stamp;
iter->user_data = level;
while (i < level->array->len)
{
if (!g_array_index (level->array, FilterElt, i).visible)
{
i++;
continue;
}
iter->user_data2 = &g_array_index (level->array, FilterElt, i);
return TRUE;
}
iter->stamp = 0;
return FALSE;
}
else
{
int i = 0;
FilterElt *elt;
elt = FILTER_ELT (parent->user_data2);
if (elt->children == NULL)
gtk_tree_model_filter_build_level (filter,
FILTER_LEVEL (parent->user_data),
FILTER_LEVEL_ELT_INDEX (parent->user_data, elt),
FALSE);
if (elt->children == NULL)
return FALSE;
if (elt->children->visible_nodes <= 0)
return FALSE;
iter->stamp = filter->priv->stamp;
iter->user_data = elt->children;
level = FILTER_LEVEL (iter->user_data);
while (i < level->array->len)
{
if (!g_array_index (level->array, FilterElt, i).visible)
{
i++;
continue;
}
iter->user_data2 = &g_array_index (level->array, FilterElt, i);
return TRUE;
}
iter->stamp = 0;
return FALSE;
}
iter->stamp = 0;
return FALSE;
}
static gboolean
gtk_tree_model_filter_iter_has_child (GtkTreeModel *model,
GtkTreeIter *iter)
{
GtkTreeIter child_iter;
GtkTreeModelFilter *filter = (GtkTreeModelFilter *)model;
FilterElt *elt;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (model), FALSE);
g_return_val_if_fail (filter->priv->child_model != NULL, FALSE);
g_return_val_if_fail (filter->priv->stamp == iter->stamp, FALSE);
filter = GTK_TREE_MODEL_FILTER (model);
gtk_tree_model_filter_convert_iter_to_child_iter (GTK_TREE_MODEL_FILTER (model), &child_iter, iter);
elt = FILTER_ELT (iter->user_data2);
if (!elt->visible)
return FALSE;
/* we need to build the level to check if not all children are filtered
* out
*/
if (!elt->children
&& gtk_tree_model_iter_has_child (filter->priv->child_model, &child_iter))
gtk_tree_model_filter_build_level (filter, FILTER_LEVEL (iter->user_data),
FILTER_LEVEL_ELT_INDEX (iter->user_data, elt),
FALSE);
if (elt->children && elt->children->visible_nodes > 0)
return TRUE;
return FALSE;
}
static gint
gtk_tree_model_filter_iter_n_children (GtkTreeModel *model,
GtkTreeIter *iter)
{
GtkTreeIter child_iter;
GtkTreeModelFilter *filter = (GtkTreeModelFilter *)model;
FilterElt *elt;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (model), 0);
g_return_val_if_fail (filter->priv->child_model != NULL, 0);
if (iter)
g_return_val_if_fail (filter->priv->stamp == iter->stamp, 0);
if (!iter)
{
if (!filter->priv->root)
gtk_tree_model_filter_build_level (filter, NULL, -1, FALSE);
if (filter->priv->root)
return FILTER_LEVEL (filter->priv->root)->visible_nodes;
return 0;
}
elt = FILTER_ELT (iter->user_data2);
if (!elt->visible)
return 0;
gtk_tree_model_filter_convert_iter_to_child_iter (GTK_TREE_MODEL_FILTER (model), &child_iter, iter);
if (!elt->children &&
gtk_tree_model_iter_has_child (filter->priv->child_model, &child_iter))
gtk_tree_model_filter_build_level (filter,
FILTER_LEVEL (iter->user_data),
FILTER_LEVEL_ELT_INDEX (iter->user_data, elt),
FALSE);
if (elt->children)
return elt->children->visible_nodes;
return 0;
}
static gboolean
gtk_tree_model_filter_iter_nth_child (GtkTreeModel *model,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint n)
{
FilterElt *elt;
FilterLevel *level;
GtkTreeIter children;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (model), FALSE);
if (parent)
g_return_val_if_fail (GTK_TREE_MODEL_FILTER (model)->priv->stamp == parent->stamp, FALSE);
/* use this instead of has_child to force us to build the level, if needed */
if (gtk_tree_model_filter_iter_children (model, &children, parent) == FALSE)
{
iter->stamp = 0;
return FALSE;
}
level = children.user_data;
elt = FILTER_ELT (level->array->data);
if (n >= level->visible_nodes)
{
iter->stamp = 0;
return FALSE;
}
elt = gtk_tree_model_filter_get_nth_visible (GTK_TREE_MODEL_FILTER (model),
level, n);
iter->stamp = GTK_TREE_MODEL_FILTER (model)->priv->stamp;
iter->user_data = level;
iter->user_data2 = elt;
return TRUE;
}
static gboolean
gtk_tree_model_filter_iter_parent (GtkTreeModel *model,
GtkTreeIter *iter,
GtkTreeIter *child)
{
FilterLevel *level;
iter->stamp = 0;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (model), FALSE);
g_return_val_if_fail (GTK_TREE_MODEL_FILTER (model)->priv->child_model != NULL, FALSE);
g_return_val_if_fail (GTK_TREE_MODEL_FILTER (model)->priv->stamp == child->stamp, FALSE);
level = child->user_data;
if (level->parent_level)
{
iter->stamp = GTK_TREE_MODEL_FILTER (model)->priv->stamp;
iter->user_data = level->parent_level;
iter->user_data2 = FILTER_LEVEL_PARENT_ELT (level);
return TRUE;
}
return FALSE;
}
static void
gtk_tree_model_filter_ref_node (GtkTreeModel *model,
GtkTreeIter *iter)
{
GtkTreeModelFilter *filter = (GtkTreeModelFilter *)model;
GtkTreeIter child_iter;
FilterLevel *level;
FilterElt *elt;
g_return_if_fail (GTK_IS_TREE_MODEL_FILTER (model));
g_return_if_fail (GTK_TREE_MODEL_FILTER (model)->priv->child_model != NULL);
g_return_if_fail (GTK_TREE_MODEL_FILTER (model)->priv->stamp == iter->stamp);
gtk_tree_model_filter_convert_iter_to_child_iter (GTK_TREE_MODEL_FILTER (model), &child_iter, iter);
gtk_tree_model_ref_node (filter->priv->child_model, &child_iter);
level = iter->user_data;
elt = iter->user_data2;
elt->ref_count++;
level->ref_count++;
if (level->ref_count == 1)
{
FilterLevel *parent_level = level->parent_level;
gint parent_elt_index = level->parent_elt_index;
/* we were at zero -- time to decrease the zero_ref_count val */
while (parent_level)
{
g_array_index (parent_level->array, FilterElt, parent_elt_index).zero_ref_count--;
parent_elt_index = parent_level->parent_elt_index;
parent_level = parent_level->parent_level;
}
if (filter->priv->root != level)
filter->priv->zero_ref_count--;
}
}
static void
gtk_tree_model_filter_unref_node (GtkTreeModel *model,
GtkTreeIter *iter)
{
gtk_tree_model_filter_real_unref_node (model, iter, TRUE);
}
static void
gtk_tree_model_filter_real_unref_node (GtkTreeModel *model,
GtkTreeIter *iter,
gboolean propagate_unref)
{
GtkTreeModelFilter *filter = (GtkTreeModelFilter *)model;
FilterLevel *level;
FilterElt *elt;
g_return_if_fail (GTK_IS_TREE_MODEL_FILTER (model));
g_return_if_fail (filter->priv->child_model != NULL);
g_return_if_fail (filter->priv->stamp == iter->stamp);
if (propagate_unref)
{
GtkTreeIter child_iter;
gtk_tree_model_filter_convert_iter_to_child_iter (GTK_TREE_MODEL_FILTER (model), &child_iter, iter);
gtk_tree_model_unref_node (filter->priv->child_model, &child_iter);
}
level = iter->user_data;
elt = iter->user_data2;
g_return_if_fail (elt->ref_count > 0);
elt->ref_count--;
level->ref_count--;
if (level->ref_count == 0)
{
FilterLevel *parent_level = level->parent_level;
gint parent_elt_index = level->parent_elt_index;
/* we are at zero -- time to increase the zero_ref_count val */
while (parent_level)
{
g_array_index (parent_level->array, FilterElt, parent_elt_index).zero_ref_count++;
parent_elt_index = parent_level->parent_elt_index;
parent_level = parent_level->parent_level;
}
if (filter->priv->root != level)
filter->priv->zero_ref_count++;
}
}
/* TreeDragSource interface implementation */
static gboolean
gtk_tree_model_filter_row_draggable (GtkTreeDragSource *drag_source,
GtkTreePath *path)
{
GtkTreeModelFilter *tree_model_filter = (GtkTreeModelFilter *)drag_source;
GtkTreePath *child_path;
gboolean draggable;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (drag_source), FALSE);
g_return_val_if_fail (path != NULL, FALSE);
child_path = gtk_tree_model_filter_convert_path_to_child_path (tree_model_filter, path);
draggable = gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (tree_model_filter->priv->child_model), child_path);
gtk_tree_path_free (child_path);
return draggable;
}
static gboolean
gtk_tree_model_filter_drag_data_get (GtkTreeDragSource *drag_source,
GtkTreePath *path,
GtkSelectionData *selection_data)
{
GtkTreeModelFilter *tree_model_filter = (GtkTreeModelFilter *)drag_source;
GtkTreePath *child_path;
gboolean gotten;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (drag_source), FALSE);
g_return_val_if_fail (path != NULL, FALSE);
child_path = gtk_tree_model_filter_convert_path_to_child_path (tree_model_filter, path);
gotten = gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (tree_model_filter->priv->child_model), child_path, selection_data);
gtk_tree_path_free (child_path);
return gotten;
}
static gboolean
gtk_tree_model_filter_drag_data_delete (GtkTreeDragSource *drag_source,
GtkTreePath *path)
{
GtkTreeModelFilter *tree_model_filter = (GtkTreeModelFilter *)drag_source;
GtkTreePath *child_path;
gboolean deleted;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (drag_source), FALSE);
g_return_val_if_fail (path != NULL, FALSE);
child_path = gtk_tree_model_filter_convert_path_to_child_path (tree_model_filter, path);
deleted = gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (tree_model_filter->priv->child_model), child_path);
gtk_tree_path_free (child_path);
return deleted;
}
/* bits and pieces */
static void
gtk_tree_model_filter_set_model (GtkTreeModelFilter *filter,
GtkTreeModel *child_model)
{
g_return_if_fail (GTK_IS_TREE_MODEL_FILTER (filter));
if (filter->priv->child_model)
{
g_signal_handler_disconnect (filter->priv->child_model,
filter->priv->changed_id);
g_signal_handler_disconnect (filter->priv->child_model,
filter->priv->inserted_id);
g_signal_handler_disconnect (filter->priv->child_model,
filter->priv->has_child_toggled_id);
g_signal_handler_disconnect (filter->priv->child_model,
filter->priv->deleted_id);
g_signal_handler_disconnect (filter->priv->child_model,
filter->priv->reordered_id);
/* reset our state */
if (filter->priv->root)
gtk_tree_model_filter_free_level (filter, filter->priv->root);
filter->priv->root = NULL;
g_object_unref (filter->priv->child_model);
filter->priv->visible_column = -1;
/* FIXME: do we need to destroy more here? */
}
filter->priv->child_model = child_model;
if (child_model)
{
g_object_ref (filter->priv->child_model);
filter->priv->changed_id =
g_signal_connect (child_model, "row-changed",
G_CALLBACK (gtk_tree_model_filter_row_changed),
filter);
filter->priv->inserted_id =
g_signal_connect (child_model, "row-inserted",
G_CALLBACK (gtk_tree_model_filter_row_inserted),
filter);
filter->priv->has_child_toggled_id =
g_signal_connect (child_model, "row-has-child-toggled",
G_CALLBACK (gtk_tree_model_filter_row_has_child_toggled),
filter);
filter->priv->deleted_id =
g_signal_connect (child_model, "row-deleted",
G_CALLBACK (gtk_tree_model_filter_row_deleted),
filter);
filter->priv->reordered_id =
g_signal_connect (child_model, "rows-reordered",
G_CALLBACK (gtk_tree_model_filter_rows_reordered),
filter);
filter->priv->child_flags = gtk_tree_model_get_flags (child_model);
filter->priv->stamp = g_random_int ();
}
}
static void
gtk_tree_model_filter_ref_path (GtkTreeModelFilter *filter,
GtkTreePath *path)
{
int len;
GtkTreePath *p;
len = gtk_tree_path_get_depth (path);
p = gtk_tree_path_copy (path);
while (len--)
{
GtkTreeIter iter;
gtk_tree_model_get_iter (GTK_TREE_MODEL (filter->priv->child_model), &iter, p);
gtk_tree_model_ref_node (GTK_TREE_MODEL (filter->priv->child_model), &iter);
gtk_tree_path_up (p);
}
gtk_tree_path_free (p);
}
static void
gtk_tree_model_filter_unref_path (GtkTreeModelFilter *filter,
GtkTreePath *path)
{
int len;
GtkTreePath *p;
len = gtk_tree_path_get_depth (path);
p = gtk_tree_path_copy (path);
while (len--)
{
GtkTreeIter iter;
gtk_tree_model_get_iter (GTK_TREE_MODEL (filter->priv->child_model), &iter, p);
gtk_tree_model_unref_node (GTK_TREE_MODEL (filter->priv->child_model), &iter);
gtk_tree_path_up (p);
}
gtk_tree_path_free (p);
}
static void
gtk_tree_model_filter_set_root (GtkTreeModelFilter *filter,
GtkTreePath *root)
{
g_return_if_fail (GTK_IS_TREE_MODEL_FILTER (filter));
if (!root)
filter->priv->virtual_root = NULL;
else
filter->priv->virtual_root = gtk_tree_path_copy (root);
}
/* public API */
/**
* gtk_tree_model_filter_new:
* @child_model: A #GtkTreeModel.
* @root: (allow-none): A #GtkTreePath or %NULL.
*
* Creates a new #GtkTreeModel, with @child_model as the child_model
* and @root as the virtual root.
*
* Return value: A new #GtkTreeModel.
*
* Since: 2.4
*/
GtkTreeModel *
gtk_tree_model_filter_new (GtkTreeModel *child_model,
GtkTreePath *root)
{
GtkTreeModel *retval;
GtkTreeModelFilter *filter;
g_return_val_if_fail (GTK_IS_TREE_MODEL (child_model), NULL);
retval = g_object_new (GTK_TYPE_TREE_MODEL_FILTER,
"child-model", child_model,
"virtual-root", root,
NULL);
filter = GTK_TREE_MODEL_FILTER (retval);
if (filter->priv->virtual_root)
{
gtk_tree_model_filter_ref_path (filter, filter->priv->virtual_root);
filter->priv->virtual_root_deleted = FALSE;
}
return retval;
}
/**
* gtk_tree_model_filter_get_model:
* @filter: A #GtkTreeModelFilter.
*
* Returns a pointer to the child model of @filter.
*
* Return value: A pointer to a #GtkTreeModel.
*
* Since: 2.4
*/
GtkTreeModel *
gtk_tree_model_filter_get_model (GtkTreeModelFilter *filter)
{
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (filter), NULL);
return filter->priv->child_model;
}
/**
* gtk_tree_model_filter_set_visible_func:
* @filter: A #GtkTreeModelFilter.
* @func: A #GtkTreeModelFilterVisibleFunc, the visible function.
* @data: (allow-none): User data to pass to the visible function, or %NULL.
* @destroy: (allow-none): Destroy notifier of @data, or %NULL.
*
* Sets the visible function used when filtering the @filter to be @func. The
* function should return %TRUE if the given row should be visible and
* %FALSE otherwise.
*
* If the condition calculated by the function changes over time (e.g. because
* it depends on some global parameters), you must call
* gtk_tree_model_filter_refilter() to keep the visibility information of
* the model uptodate.
*
* Note that @func is called whenever a row is inserted, when it may still be
* empty. The visible function should therefore take special care of empty
* rows, like in the example below.
*
* <informalexample><programlisting>
* static gboolean
* visible_func (GtkTreeModel *model,
* GtkTreeIter *iter,
* gpointer data)
* {
* /&ast; Visible if row is non-empty and first column is "HI" &ast;/
* gchar *str;
* gboolean visible = FALSE;
*
* gtk_tree_model_get (model, iter, 0, &str, -1);
* if (str && strcmp (str, "HI") == 0)
* visible = TRUE;
* g_free (str);
*
* return visible;
* }
* </programlisting></informalexample>
*
* Since: 2.4
*/
void
gtk_tree_model_filter_set_visible_func (GtkTreeModelFilter *filter,
GtkTreeModelFilterVisibleFunc func,
gpointer data,
GDestroyNotify destroy)
{
g_return_if_fail (GTK_IS_TREE_MODEL_FILTER (filter));
g_return_if_fail (func != NULL);
g_return_if_fail (filter->priv->visible_method_set == FALSE);
filter->priv->visible_func = func;
filter->priv->visible_data = data;
filter->priv->visible_destroy = destroy;
filter->priv->visible_method_set = TRUE;
}
/**
* gtk_tree_model_filter_set_modify_func:
* @filter: A #GtkTreeModelFilter.
* @n_columns: The number of columns in the filter model.
* @types: The #GType<!-- -->s of the columns.
* @func: A #GtkTreeModelFilterModifyFunc
* @data: (allow-none): User data to pass to the modify function, or %NULL.
* @destroy: (allow-none): Destroy notifier of @data, or %NULL.
*
* With the @n_columns and @types parameters, you give an array of column
* types for this model (which will be exposed to the parent model/view).
* The @func, @data and @destroy parameters are for specifying the modify
* function. The modify function will get called for <emphasis>each</emphasis>
* data access, the goal of the modify function is to return the data which
* should be displayed at the location specified using the parameters of the
* modify function.
*
* Since: 2.4
*/
void
gtk_tree_model_filter_set_modify_func (GtkTreeModelFilter *filter,
gint n_columns,
GType *types,
GtkTreeModelFilterModifyFunc func,
gpointer data,
GDestroyNotify destroy)
{
g_return_if_fail (GTK_IS_TREE_MODEL_FILTER (filter));
g_return_if_fail (func != NULL);
g_return_if_fail (filter->priv->modify_func_set == FALSE);
if (filter->priv->modify_destroy)
{
GDestroyNotify d = filter->priv->modify_destroy;
filter->priv->modify_destroy = NULL;
d (filter->priv->modify_data);
}
filter->priv->modify_n_columns = n_columns;
filter->priv->modify_types = g_new0 (GType, n_columns);
memcpy (filter->priv->modify_types, types, sizeof (GType) * n_columns);
filter->priv->modify_func = func;
filter->priv->modify_data = data;
filter->priv->modify_destroy = destroy;
filter->priv->modify_func_set = TRUE;
}
/**
* gtk_tree_model_filter_set_visible_column:
* @filter: A #GtkTreeModelFilter.
* @column: A #gint which is the column containing the visible information.
*
* Sets @column of the child_model to be the column where @filter should
* look for visibility information. @columns should be a column of type
* %G_TYPE_BOOLEAN, where %TRUE means that a row is visible, and %FALSE
* if not.
*
* Since: 2.4
*/
void
gtk_tree_model_filter_set_visible_column (GtkTreeModelFilter *filter,
gint column)
{
g_return_if_fail (GTK_IS_TREE_MODEL_FILTER (filter));
g_return_if_fail (column >= 0);
g_return_if_fail (filter->priv->visible_method_set == FALSE);
filter->priv->visible_column = column;
filter->priv->visible_method_set = TRUE;
}
/* conversion */
/**
* gtk_tree_model_filter_convert_child_iter_to_iter:
* @filter: A #GtkTreeModelFilter.
* @filter_iter: An uninitialized #GtkTreeIter.
* @child_iter: A valid #GtkTreeIter pointing to a row on the child model.
*
* Sets @filter_iter to point to the row in @filter that corresponds to the
* row pointed at by @child_iter. If @filter_iter was not set, %FALSE is
* returned.
*
* Return value: %TRUE, if @filter_iter was set, i.e. if @child_iter is a
* valid iterator pointing to a visible row in child model.
*
* Since: 2.4
*/
gboolean
gtk_tree_model_filter_convert_child_iter_to_iter (GtkTreeModelFilter *filter,
GtkTreeIter *filter_iter,
GtkTreeIter *child_iter)
{
gboolean ret;
GtkTreePath *child_path, *path;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (filter), FALSE);
g_return_val_if_fail (filter->priv->child_model != NULL, FALSE);
g_return_val_if_fail (filter_iter != NULL, FALSE);
g_return_val_if_fail (child_iter != NULL, FALSE);
g_return_val_if_fail (filter_iter != child_iter, FALSE);
filter_iter->stamp = 0;
child_path = gtk_tree_model_get_path (filter->priv->child_model, child_iter);
g_return_val_if_fail (child_path != NULL, FALSE);
path = gtk_tree_model_filter_convert_child_path_to_path (filter,
child_path);
gtk_tree_path_free (child_path);
if (!path)
return FALSE;
ret = gtk_tree_model_get_iter (GTK_TREE_MODEL (filter), filter_iter, path);
gtk_tree_path_free (path);
return ret;
}
/**
* gtk_tree_model_filter_convert_iter_to_child_iter:
* @filter: A #GtkTreeModelFilter.
* @child_iter: An uninitialized #GtkTreeIter.
* @filter_iter: A valid #GtkTreeIter pointing to a row on @filter.
*
* Sets @child_iter to point to the row pointed to by @filter_iter.
*
* Since: 2.4
*/
void
gtk_tree_model_filter_convert_iter_to_child_iter (GtkTreeModelFilter *filter,
GtkTreeIter *child_iter,
GtkTreeIter *filter_iter)
{
g_return_if_fail (GTK_IS_TREE_MODEL_FILTER (filter));
g_return_if_fail (filter->priv->child_model != NULL);
g_return_if_fail (child_iter != NULL);
g_return_if_fail (filter_iter != NULL);
g_return_if_fail (filter_iter->stamp == filter->priv->stamp);
g_return_if_fail (filter_iter != child_iter);
if (GTK_TREE_MODEL_FILTER_CACHE_CHILD_ITERS (filter))
{
*child_iter = FILTER_ELT (filter_iter->user_data2)->iter;
}
else
{
GtkTreePath *path;
path = gtk_tree_model_filter_elt_get_path (filter_iter->user_data,
filter_iter->user_data2,
filter->priv->virtual_root);
gtk_tree_model_get_iter (filter->priv->child_model, child_iter, path);
gtk_tree_path_free (path);
}
}
/* The path returned can only be used internally in the filter model. */
static GtkTreePath *
gtk_real_tree_model_filter_convert_child_path_to_path (GtkTreeModelFilter *filter,
GtkTreePath *child_path,
gboolean build_levels,
gboolean fetch_children)
{
gint *child_indices;
GtkTreePath *retval;
GtkTreePath *real_path;
FilterLevel *level;
FilterElt *tmp;
gint i;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (filter), NULL);
g_return_val_if_fail (filter->priv->child_model != NULL, NULL);
g_return_val_if_fail (child_path != NULL, NULL);
if (!filter->priv->virtual_root)
real_path = gtk_tree_path_copy (child_path);
else
real_path = gtk_tree_model_filter_remove_root (child_path,
filter->priv->virtual_root);
if (!real_path)
return NULL;
retval = gtk_tree_path_new ();
child_indices = gtk_tree_path_get_indices (real_path);
if (filter->priv->root == NULL && build_levels)
gtk_tree_model_filter_build_level (filter, NULL, -1, FALSE);
level = FILTER_LEVEL (filter->priv->root);
for (i = 0; i < gtk_tree_path_get_depth (real_path); i++)
{
gint j;
gboolean found_child = FALSE;
if (!level)
{
gtk_tree_path_free (real_path);
gtk_tree_path_free (retval);
return NULL;
}
tmp = bsearch_elt_with_offset (level->array, child_indices[i], &j);
if (tmp)
{
gtk_tree_path_append_index (retval, j);
if (!tmp->children && build_levels)
gtk_tree_model_filter_build_level (filter, level,
FILTER_LEVEL_ELT_INDEX (level, tmp),
FALSE);
level = tmp->children;
found_child = TRUE;
}
if (!found_child && fetch_children)
{
tmp = gtk_tree_model_filter_fetch_child (filter, level,
child_indices[i],
&j);
/* didn't find the child, let's try to bring it back */
if (!tmp || tmp->offset != child_indices[i])
{
/* not there */
gtk_tree_path_free (real_path);
gtk_tree_path_free (retval);
return NULL;
}
gtk_tree_path_append_index (retval, j);
if (!tmp->children && build_levels)
gtk_tree_model_filter_build_level (filter, level,
FILTER_LEVEL_ELT_INDEX (level, tmp),
FALSE);
level = tmp->children;
found_child = TRUE;
}
else if (!found_child && !fetch_children)
{
/* no path */
gtk_tree_path_free (real_path);
gtk_tree_path_free (retval);
return NULL;
}
}
gtk_tree_path_free (real_path);
return retval;
}
/**
* gtk_tree_model_filter_convert_child_path_to_path:
* @filter: A #GtkTreeModelFilter.
* @child_path: A #GtkTreePath to convert.
*
* Converts @child_path to a path relative to @filter. That is, @child_path
* points to a path in the child model. The rerturned path will point to the
* same row in the filtered model. If @child_path isn't a valid path on the
* child model or points to a row which is not visible in @filter, then %NULL
* is returned.
*
* Return value: A newly allocated #GtkTreePath, or %NULL.
*
* Since: 2.4
*/
GtkTreePath *
gtk_tree_model_filter_convert_child_path_to_path (GtkTreeModelFilter *filter,
GtkTreePath *child_path)
{
GtkTreeIter iter;
GtkTreePath *path;
/* this function does the sanity checks */
path = gtk_real_tree_model_filter_convert_child_path_to_path (filter,
child_path,
TRUE,
TRUE);
if (!path)
return NULL;
/* get a new path which only takes visible nodes into account.
* -- if this gives any performance issues, we can write a special
* version of convert_child_path_to_path immediately returning
* a visible-nodes-only path.
*/
gtk_tree_model_filter_get_iter_full (GTK_TREE_MODEL (filter), &iter, path);
gtk_tree_path_free (path);
path = gtk_tree_model_get_path (GTK_TREE_MODEL (filter), &iter);
return path;
}
/**
* gtk_tree_model_filter_convert_path_to_child_path:
* @filter: A #GtkTreeModelFilter.
* @filter_path: A #GtkTreePath to convert.
*
* Converts @filter_path to a path on the child model of @filter. That is,
* @filter_path points to a location in @filter. The returned path will
* point to the same location in the model not being filtered. If @filter_path
* does not point to a location in the child model, %NULL is returned.
*
* Return value: A newly allocated #GtkTreePath, or %NULL.
*
* Since: 2.4
*/
GtkTreePath *
gtk_tree_model_filter_convert_path_to_child_path (GtkTreeModelFilter *filter,
GtkTreePath *filter_path)
{
gint *filter_indices;
GtkTreePath *retval;
FilterLevel *level;
gint i;
g_return_val_if_fail (GTK_IS_TREE_MODEL_FILTER (filter), NULL);
g_return_val_if_fail (filter->priv->child_model != NULL, NULL);
g_return_val_if_fail (filter_path != NULL, NULL);
/* convert path */
retval = gtk_tree_path_new ();
filter_indices = gtk_tree_path_get_indices (filter_path);
if (!filter->priv->root)
gtk_tree_model_filter_build_level (filter, NULL, -1, FALSE);
level = FILTER_LEVEL (filter->priv->root);
for (i = 0; i < gtk_tree_path_get_depth (filter_path); i++)
{
FilterElt *elt;
if (!level || level->visible_nodes <= filter_indices[i])
{
gtk_tree_path_free (retval);
return NULL;
}
elt = gtk_tree_model_filter_get_nth_visible (filter, level,
filter_indices[i]);
if (elt->children == NULL)
gtk_tree_model_filter_build_level (filter, level,
FILTER_LEVEL_ELT_INDEX (level, elt),
FALSE);
if (!level || level->visible_nodes <= filter_indices[i])
{
gtk_tree_path_free (retval);
return NULL;
}
gtk_tree_path_append_index (retval, elt->offset);
level = elt->children;
}
/* apply vroot */
if (filter->priv->virtual_root)
{
GtkTreePath *real_retval;
real_retval = gtk_tree_model_filter_add_root (retval,
filter->priv->virtual_root);
gtk_tree_path_free (retval);
return real_retval;
}
return retval;
}
static gboolean
gtk_tree_model_filter_refilter_helper (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data)
{
/* evil, don't try this at home, but certainly speeds things up */
gtk_tree_model_filter_row_changed (model, path, iter, data);
return FALSE;
}
/**
* gtk_tree_model_filter_refilter:
* @filter: A #GtkTreeModelFilter.
*
* Emits ::row_changed for each row in the child model, which causes
* the filter to re-evaluate whether a row is visible or not.
*
* Since: 2.4
*/
void
gtk_tree_model_filter_refilter (GtkTreeModelFilter *filter)
{
g_return_if_fail (GTK_IS_TREE_MODEL_FILTER (filter));
/* S L O W */
gtk_tree_model_foreach (filter->priv->child_model,
gtk_tree_model_filter_refilter_helper,
filter);
}
/**
* gtk_tree_model_filter_clear_cache:
* @filter: A #GtkTreeModelFilter.
*
* This function should almost never be called. It clears the @filter
* of any cached iterators that haven't been reffed with
* gtk_tree_model_ref_node(). This might be useful if the child model
* being filtered is static (and doesn't change often) and there has been
* a lot of unreffed access to nodes. As a side effect of this function,
* all unreffed iters will be invalid.
*
* Since: 2.4
*/
void
gtk_tree_model_filter_clear_cache (GtkTreeModelFilter *filter)
{
g_return_if_fail (GTK_IS_TREE_MODEL_FILTER (filter));
if (filter->priv->zero_ref_count > 0)
gtk_tree_model_filter_clear_cache_helper (filter,
FILTER_LEVEL (filter->priv->root));
}
#define __GTK_TREE_MODEL_FILTER_C__
#include "gtkaliasdef.c"
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