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gtk2/gtk/gtktreemodel.c
William Jon McCann 37a8ee6e95 docs: fully break lines in examples 
Try to do a better job of keeping example content
from being too wide. It is often rendered as <pre>
text so the only time we can wrap it is in the source.

It is best to full break lines at all punctuation and
to try to keep the width under 70 chars or so.
2014-02-12 18:42:50 -05:00

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/* gtktreemodel.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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <glib/gprintf.h>
#include <gobject/gvaluecollector.h>
#include "gtktreemodel.h"
#include "gtktreeview.h"
#include "gtktreeprivate.h"
#include "gtkmarshalers.h"
#include "gtkintl.h"
/**
* SECTION:gtktreemodel
* @Title: GtkTreeModel
* @Short_description: The tree interface used by GtkTreeView
* @See_also: #GtkTreeView, #GtkTreeStore, #GtkListStore,
* [GtkTreeView drag-and-drop][gtk3-GtkTreeView-drag-and-drop]
* #GtkTreeSortable
*
* The #GtkTreeModel interface defines a generic tree interface for
* use by the #GtkTreeView widget. It is an abstract interface, and
* is designed to be usable with any appropriate data structure. The
* programmer just has to implement this interface on their own data
* type for it to be viewable by a #GtkTreeView widget.
*
* The model is represented as a hierarchical tree of strongly-typed,
* columned data. In other words, the model can be seen as a tree where
* every node has different values depending on which column is being
* queried. The type of data found in a column is determined by using
* the GType system (ie. #G_TYPE_INT, #GTK_TYPE_BUTTON, #G_TYPE_POINTER,
* etc). The types are homogeneous per column across all nodes. It is
* important to note that this interface only provides a way of examining
* a model and observing changes. The implementation of each individual
* model decides how and if changes are made.
*
* In order to make life simpler for programmers who do not need to
* write their own specialized model, two generic models are provided
* &mdash; the #GtkTreeStore and the #GtkListStore. To use these, the
* developer simply pushes data into these models as necessary. These
* models provide the data structure as well as all appropriate tree
* interfaces. As a result, implementing drag and drop, sorting, and
* storing data is trivial. For the vast majority of trees and lists,
* these two models are sufficient.
*
* Models are accessed on a node/column level of granularity. One can
* query for the value of a model at a certain node and a certain
* column on that node. There are two structures used to reference a
* particular node in a model. They are the #GtkTreePath-struct and
* the #GtkTreeIter-struct (“iter” is short for iterator). Most of the
* interface consists of operations on a #GtkTreeIter-struct.
*
* A path is essentially a potential node. It is a location on a model
* that may or may not actually correspond to a node on a specific
* model. The #GtkTreePath-struct can be converted into either an
* array of unsigned integers or a string. The string form is a list
* of numbers separated by a colon. Each number refers to the offset
* at that level. Thus, the path `0` refers to the root
* node and the path `2:4` refers to the fifth child of
* the third node.
*
* By contrast, a #GtkTreeIter-struct is a reference to a specific node on
* a specific model. It is a generic struct with an integer and three
* generic pointers. These are filled in by the model in a model-specific
* way. One can convert a path to an iterator by calling
* gtk_tree_model_get_iter(). These iterators are the primary way
* of accessing a model and are similar to the iterators used by
* #GtkTextBuffer. They are generally statically allocated on the
* stack and only used for a short time. The model interface defines
* a set of operations using them for navigating the model.
*
* It is expected that models fill in the iterator with private data.
* For example, the #GtkListStore model, which is internally a simple
* linked list, stores a list node in one of the pointers. The
* #GtkTreeModelSort stores an array and an offset in two of the
* pointers. Additionally, there is an integer field. This field is
* generally filled with a unique stamp per model. This stamp is for
* catching errors resulting from using invalid iterators with a model.
*
* The lifecycle of an iterator can be a little confusing at first.
* Iterators are expected to always be valid for as long as the model
* is unchanged (and doesn’t emit a signal). The model is considered
* to own all outstanding iterators and nothing needs to be done to
* free them from the user’s point of view. Additionally, some models
* guarantee that an iterator is valid for as long as the node it refers
* to is valid (most notably the #GtkTreeStore and #GtkListStore).
* Although generally uninteresting, as one always has to allow for
* the case where iterators do not persist beyond a signal, some very
* important performance enhancements were made in the sort model.
* As a result, the #GTK_TREE_MODEL_ITERS_PERSIST flag was added to
* indicate this behavior.
*
* To help show some common operation of a model, some examples are
* provided. The first example shows three ways of getting the iter at
* the location `3:2:5`. While the first method shown is
* easier, the second is much more common, as you often get paths from
* callbacks.
*
* ## Acquiring a #GtkTreeIter-struct
*
* |[<!-- language="C" -->
* /&ast; Three ways of getting the iter pointing to the
* location &ast;/
* GtkTreePath *path;
* GtkTreeIter iter;
* GtkTreeIter parent_iter;
*
* /&ast; get the iterator from a string &ast;/
* gtk_tree_model_get_iter_from_string (model,
* &iter,
* "3:2:5");
*
* /&ast; get the iterator from a path &ast;/
* path = gtk_tree_path_new_from_string ("3:2:5");
* gtk_tree_model_get_iter (model, &iter, path);
* gtk_tree_path_free (path);
*
* /&ast; walk the tree to find the iterator &ast;/
* gtk_tree_model_iter_nth_child (model, &iter,
* NULL, 3);
* parent_iter = iter;
* gtk_tree_model_iter_nth_child (model, &iter,
* &parent_iter, 2);
* parent_iter = iter;
* gtk_tree_model_iter_nth_child (model, &iter,
* &parent_iter, 5);
* ]|
*
* This second example shows a quick way of iterating through a list
* and getting a string and an integer from each row. The
* populate_model() function used below is not
* shown, as it is specific to the #GtkListStore. For information on
* how to write such a function, see the #GtkListStore documentation.
*
* ## Reading data from a #GtkTreeModel
*
* |[<!-- language="C" -->
* enum
* {
* STRING_COLUMN,
* INT_COLUMN,
* N_COLUMNS
* };
*
* ...
*
* GtkTreeModel *list_store;
* GtkTreeIter iter;
* gboolean valid;
* gint row_count = 0;
*
* /&ast; make a new list_store &ast;/
* list_store = gtk_list_store_new (N_COLUMNS,
* G_TYPE_STRING,
* G_TYPE_INT);
*
* /&ast; Fill the list store with data &ast;/
* populate_model (list_store);
*
* /&ast; Get the first iter in the list, check it is
* valid and walk through the list, reading each row.
* &ast;/
*
* valid = gtk_tree_model_get_iter_first (list_store,
* &iter);
* while (valid)
* {
* gchar *str_data;
* gint int_data;
*
* /&ast; Make sure you terminate calls to
* &ast; gtk_tree_model_get() with a “-1” value
* &ast;/
* gtk_tree_model_get (list_store, &iter,
* STRING_COLUMN, &str_data,
* INT_COLUMN, &int_data,
* -1);
*
* /&ast; Do something with the data &ast;/
* g_print ("Row %d: (%s,%d)\n",
* row_count, str_data, int_data);
* g_free (str_data);
*
* valid = gtk_tree_model_iter_next (list_store,
* &iter);
* row_count++;
* }
* ]|
*
* The #GtkTreeModel interface contains two methods for reference
* counting: gtk_tree_model_ref_node() and gtk_tree_model_unref_node().
* These two methods are optional to implement. The reference counting
* is meant as a way for views to let models know when nodes are being
* displayed. #GtkTreeView will take a reference on a node when it is
* visible, which means the node is either in the toplevel or expanded.
* Being displayed does not mean that the node is currently directly
* visible to the user in the viewport. Based on this reference counting
* scheme a caching model, for example, can decide whether or not to cache
* a node based on the reference count. A file-system based model would
* not want to keep the entire file hierarchy in memory, but just the
* folders that are currently expanded in every current view.
*
* When working with reference counting, the following rules must be taken
* into account:
*
* - Never take a reference on a node without owning a reference on its parent.
* This means that all parent nodes of a referenced node must be referenced
* as well.
*
* - Outstanding references on a deleted node are not released. This is not
* possible because the node has already been deleted by the time the
* row-deleted signal is received.
*
* - Models are not obligated to emit a signal on rows of which none of its
* siblings are referenced. To phrase this differently, signals are only
* required for levels in which nodes are referenced. For the root level
* however, signals must be emitted at all times (however the root level
* is always referenced when any view is attached).
*/
#define INITIALIZE_TREE_ITER(Iter) \
G_STMT_START{ \
(Iter)->stamp = 0; \
(Iter)->user_data = NULL; \
(Iter)->user_data2 = NULL; \
(Iter)->user_data3 = NULL; \
}G_STMT_END
#define ROW_REF_DATA_STRING "gtk-tree-row-refs"
enum {
ROW_CHANGED,
ROW_INSERTED,
ROW_HAS_CHILD_TOGGLED,
ROW_DELETED,
ROWS_REORDERED,
LAST_SIGNAL
};
static guint tree_model_signals[LAST_SIGNAL] = { 0 };
struct _GtkTreePath
{
gint depth; /* Number of elements */
gint alloc; /* Number of allocated elements */
gint *indices;
};
typedef struct
{
GSList *list;
} RowRefList;
static void gtk_tree_model_base_init (gpointer g_class);
/* custom closures */
static void row_inserted_marshal (GClosure *closure,
GValue /* out */ *return_value,
guint n_param_value,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data);
static void row_deleted_marshal (GClosure *closure,
GValue /* out */ *return_value,
guint n_param_value,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data);
static void rows_reordered_marshal (GClosure *closure,
GValue /* out */ *return_value,
guint n_param_value,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data);
static void gtk_tree_row_ref_inserted (RowRefList *refs,
GtkTreePath *path,
GtkTreeIter *iter);
static void gtk_tree_row_ref_deleted (RowRefList *refs,
GtkTreePath *path);
static void gtk_tree_row_ref_reordered (RowRefList *refs,
GtkTreePath *path,
GtkTreeIter *iter,
gint *new_order);
GType
gtk_tree_model_get_type (void)
{
static GType tree_model_type = 0;
if (! tree_model_type)
{
const GTypeInfo tree_model_info =
{
sizeof (GtkTreeModelIface), /* class_size */
gtk_tree_model_base_init, /* base_init */
NULL, /* base_finalize */
NULL,
NULL, /* class_finalize */
NULL, /* class_data */
0,
0, /* n_preallocs */
NULL
};
tree_model_type =
g_type_register_static (G_TYPE_INTERFACE, I_("GtkTreeModel"),
&tree_model_info, 0);
g_type_interface_add_prerequisite (tree_model_type, G_TYPE_OBJECT);
}
return tree_model_type;
}
static void
gtk_tree_model_base_init (gpointer g_class)
{
static gboolean initialized = FALSE;
GClosure *closure;
if (! initialized)
{
GType row_inserted_params[2];
GType row_deleted_params[1];
GType rows_reordered_params[3];
row_inserted_params[0] = GTK_TYPE_TREE_PATH | G_SIGNAL_TYPE_STATIC_SCOPE;
row_inserted_params[1] = GTK_TYPE_TREE_ITER;
row_deleted_params[0] = GTK_TYPE_TREE_PATH | G_SIGNAL_TYPE_STATIC_SCOPE;
rows_reordered_params[0] = GTK_TYPE_TREE_PATH | G_SIGNAL_TYPE_STATIC_SCOPE;
rows_reordered_params[1] = GTK_TYPE_TREE_ITER;
rows_reordered_params[2] = G_TYPE_POINTER;
/**
* GtkTreeModel::row-changed:
* @tree_model: the #GtkTreeModel on which the signal is emitted
* @path: a #GtkTreePath-struct identifying the changed row
* @iter: a valid #GtkTreeIter-struct pointing to the changed row
*
* This signal is emitted when a row in the model has changed.
*/
tree_model_signals[ROW_CHANGED] =
g_signal_new (I_("row-changed"),
GTK_TYPE_TREE_MODEL,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkTreeModelIface, row_changed),
NULL, NULL,
_gtk_marshal_VOID__BOXED_BOXED,
G_TYPE_NONE, 2,
GTK_TYPE_TREE_PATH | G_SIGNAL_TYPE_STATIC_SCOPE,
GTK_TYPE_TREE_ITER);
/* We need to get notification about structure changes
* to update row references., so instead of using the
* standard g_signal_new() with an offset into our interface
* structure, we use a customs closures for the class
* closures (default handlers) that first update row references
* and then calls the function from the interface structure.
*
* The reason we don't simply update the row references from
* the wrapper functions (gtk_tree_model_row_inserted(), etc.)
* is to keep proper ordering with respect to signal handlers
* connected normally and after.
*/
/**
* GtkTreeModel::row-inserted:
* @tree_model: the #GtkTreeModel on which the signal is emitted
* @path: a #GtkTreePath-struct identifying the new row
* @iter: a valid #GtkTreeIter-struct pointing to the new row
*
* This signal is emitted when a new row has been inserted in
* the model.
*
* Note that the row may still be empty at this point, since
* it is a common pattern to first insert an empty row, and
* then fill it with the desired values.
*/
closure = g_closure_new_simple (sizeof (GClosure), NULL);
g_closure_set_marshal (closure, row_inserted_marshal);
tree_model_signals[ROW_INSERTED] =
g_signal_newv (I_("row-inserted"),
GTK_TYPE_TREE_MODEL,
G_SIGNAL_RUN_FIRST,
closure,
NULL, NULL,
_gtk_marshal_VOID__BOXED_BOXED,
G_TYPE_NONE, 2,
row_inserted_params);
/**
* GtkTreeModel::row-has-child-toggled:
* @tree_model: the #GtkTreeModel on which the signal is emitted
* @path: a #GtkTreePath-struct identifying the row
* @iter: a valid #GtkTreeIter-struct pointing to the row
*
* This signal is emitted when a row has gotten the first child
* row or lost its last child row.
*/
tree_model_signals[ROW_HAS_CHILD_TOGGLED] =
g_signal_new (I_("row-has-child-toggled"),
GTK_TYPE_TREE_MODEL,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkTreeModelIface, row_has_child_toggled),
NULL, NULL,
_gtk_marshal_VOID__BOXED_BOXED,
G_TYPE_NONE, 2,
GTK_TYPE_TREE_PATH | G_SIGNAL_TYPE_STATIC_SCOPE,
GTK_TYPE_TREE_ITER);
/**
* GtkTreeModel::row-deleted:
* @tree_model: the #GtkTreeModel on which the signal is emitted
* @path: a #GtkTreePath-struct identifying the row
*
* This signal is emitted when a row has been deleted.
*
* Note that no iterator is passed to the signal handler,
* since the row is already deleted.
*
* This should be called by models after a row has been removed.
* The location pointed to by @path should be the location that
* the row previously was at. It may not be a valid location anymore.
*/
closure = g_closure_new_simple (sizeof (GClosure), NULL);
g_closure_set_marshal (closure, row_deleted_marshal);
tree_model_signals[ROW_DELETED] =
g_signal_newv (I_("row-deleted"),
GTK_TYPE_TREE_MODEL,
G_SIGNAL_RUN_FIRST,
closure,
NULL, NULL,
_gtk_marshal_VOID__BOXED,
G_TYPE_NONE, 1,
row_deleted_params);
/**
* GtkTreeModel::rows-reordered: (skip)
* @tree_model: the #GtkTreeModel on which the signal is emitted
* @path: a #GtkTreePath-struct identifying the tree node whose children
* have been reordered
* @iter: a valid #GtkTreeIter-struct pointing to the node whose children
* have been reordered, or %NULL if the depth of @path is 0
* @new_order: an array of integers mapping the current position
* of each child to its old position before the re-ordering,
* i.e. @new_order`[newpos] = oldpos`
*
* This signal is emitted when the children of a node in the
* #GtkTreeModel have been reordered.
*
* Note that this signal is not emitted
* when rows are reordered by DND, since this is implemented
* by removing and then reinserting the row.
*/
closure = g_closure_new_simple (sizeof (GClosure), NULL);
g_closure_set_marshal (closure, rows_reordered_marshal);
tree_model_signals[ROWS_REORDERED] =
g_signal_newv (I_("rows-reordered"),
GTK_TYPE_TREE_MODEL,
G_SIGNAL_RUN_FIRST,
closure,
NULL, NULL,
_gtk_marshal_VOID__BOXED_BOXED_POINTER,
G_TYPE_NONE, 3,
rows_reordered_params);
initialized = TRUE;
}
}
static void
row_inserted_marshal (GClosure *closure,
GValue /* out */ *return_value,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data)
{
GtkTreeModelIface *iface;
void (* row_inserted_callback) (GtkTreeModel *tree_model,
GtkTreePath *path,
GtkTreeIter *iter) = NULL;
GObject *model = g_value_get_object (param_values + 0);
GtkTreePath *path = (GtkTreePath *)g_value_get_boxed (param_values + 1);
GtkTreeIter *iter = (GtkTreeIter *)g_value_get_boxed (param_values + 2);
/* first, we need to update internal row references */
gtk_tree_row_ref_inserted ((RowRefList *)g_object_get_data (model, ROW_REF_DATA_STRING),
path, iter);
/* fetch the interface ->row_inserted implementation */
iface = GTK_TREE_MODEL_GET_IFACE (model);
row_inserted_callback = G_STRUCT_MEMBER (gpointer, iface,
G_STRUCT_OFFSET (GtkTreeModelIface,
row_inserted));
/* Call that default signal handler, it if has been set */
if (row_inserted_callback)
row_inserted_callback (GTK_TREE_MODEL (model), path, iter);
}
static void
row_deleted_marshal (GClosure *closure,
GValue /* out */ *return_value,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data)
{
GtkTreeModelIface *iface;
void (* row_deleted_callback) (GtkTreeModel *tree_model,
GtkTreePath *path) = NULL;
GObject *model = g_value_get_object (param_values + 0);
GtkTreePath *path = (GtkTreePath *)g_value_get_boxed (param_values + 1);
/* first, we need to update internal row references */
gtk_tree_row_ref_deleted ((RowRefList *)g_object_get_data (model, ROW_REF_DATA_STRING),
path);
/* fetch the interface ->row_deleted implementation */
iface = GTK_TREE_MODEL_GET_IFACE (model);
row_deleted_callback = G_STRUCT_MEMBER (gpointer, iface,
G_STRUCT_OFFSET (GtkTreeModelIface,
row_deleted));
/* Call that default signal handler, it if has been set */
if (row_deleted_callback)
row_deleted_callback (GTK_TREE_MODEL (model), path);
}
static void
rows_reordered_marshal (GClosure *closure,
GValue /* out */ *return_value,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data)
{
GtkTreeModelIface *iface;
void (* rows_reordered_callback) (GtkTreeModel *tree_model,
GtkTreePath *path,
GtkTreeIter *iter,
gint *new_order);
GObject *model = g_value_get_object (param_values + 0);
GtkTreePath *path = (GtkTreePath *)g_value_get_boxed (param_values + 1);
GtkTreeIter *iter = (GtkTreeIter *)g_value_get_boxed (param_values + 2);
gint *new_order = (gint *)g_value_get_pointer (param_values + 3);
/* first, we need to update internal row references */
gtk_tree_row_ref_reordered ((RowRefList *)g_object_get_data (model, ROW_REF_DATA_STRING),
path, iter, new_order);
/* fetch the interface ->rows_reordered implementation */
iface = GTK_TREE_MODEL_GET_IFACE (model);
rows_reordered_callback = G_STRUCT_MEMBER (gpointer, iface,
G_STRUCT_OFFSET (GtkTreeModelIface,
rows_reordered));
/* Call that default signal handler, it if has been set */
if (rows_reordered_callback)
rows_reordered_callback (GTK_TREE_MODEL (model), path, iter, new_order);
}
/**
* gtk_tree_path_new:
*
* Creates a new #GtkTreePath-struct.
* This refers to a row.
*
* Return value: A newly created #GtkTreePath-struct.
*/
GtkTreePath *
gtk_tree_path_new (void)
{
GtkTreePath *retval;
retval = g_slice_new (GtkTreePath);
retval->depth = 0;
retval->alloc = 0;
retval->indices = NULL;
return retval;
}
/**
* gtk_tree_path_new_from_string:
* @path: The string representation of a path
*
* Creates a new #GtkTreePath-struct initialized to @path.
*
* @path is expected to be a colon separated list of numbers.
* For example, the string “10:4:0” would create a path of depth
* 3 pointing to the 11th child of the root node, the 5th
* child of that 11th child, and the 1st child of that 5th child.
* If an invalid path string is passed in, %NULL is returned.
*
* Return value: A newly-created #GtkTreePath-struct, or %NULL
*/
GtkTreePath *
gtk_tree_path_new_from_string (const gchar *path)
{
GtkTreePath *retval;
const gchar *orig_path = path;
gchar *ptr;
gint i;
g_return_val_if_fail (path != NULL, NULL);
g_return_val_if_fail (*path != '\000', NULL);
retval = gtk_tree_path_new ();
while (1)
{
i = strtol (path, &ptr, 10);
if (i < 0)
{
g_warning (G_STRLOC ": Negative numbers in path %s passed to gtk_tree_path_new_from_string", orig_path);
gtk_tree_path_free (retval);
return NULL;
}
gtk_tree_path_append_index (retval, i);
if (*ptr == '\000')
break;
if (ptr == path || *ptr != ':')
{
g_warning (G_STRLOC ": Invalid path %s passed to gtk_tree_path_new_from_string", orig_path);
gtk_tree_path_free (retval);
return NULL;
}
path = ptr + 1;
}
return retval;
}
/**
* gtk_tree_path_new_from_indices:
* @first_index: first integer
* @...: list of integers terminated by -1
*
* Creates a new path with @first_index and @varargs as indices.
*
* Return value: A newly created #GtkTreePath-struct
*
* Since: 2.2
*/
GtkTreePath *
gtk_tree_path_new_from_indices (gint first_index,
...)
{
int arg;
va_list args;
GtkTreePath *path;
path = gtk_tree_path_new ();
va_start (args, first_index);
arg = first_index;
while (arg != -1)
{
gtk_tree_path_append_index (path, arg);
arg = va_arg (args, gint);
}
va_end (args);
return path;
}
/**
* gtk_tree_path_new_from_indicesv: (rename-to gtk_tree_path_new_from_indices)
* @indices: (array length=length): array of indices
* @length: length of @indices array
*
* Creates a new path with the given @indices array of @length.
*
* Return value: A newly created #GtkTreePath-struct
*
* Since: 3.12
*/
GtkTreePath *
gtk_tree_path_new_from_indicesv (gint *indices,
gsize length)
{
GtkTreePath *path;
g_return_val_if_fail (indices != NULL && length != 0, NULL);
path = gtk_tree_path_new ();
path->alloc = length;
path->depth = length;
path->indices = g_new (gint, length);
memcpy (path->indices, indices, length * sizeof (gint));
return path;
}
/**
* gtk_tree_path_to_string:
* @path: A #GtkTreePath-struct
*
* Generates a string representation of the path.
*
* This string is a “:” separated list of numbers.
* For example, “4:10:0:3” would be an acceptable
* return value for this string.
*
* Return value: A newly-allocated string.
* Must be freed with g_free().
*/
gchar *
gtk_tree_path_to_string (GtkTreePath *path)
{
gchar *retval, *ptr, *end;
gint i, n;
g_return_val_if_fail (path != NULL, NULL);
if (path->depth == 0)
return NULL;
n = path->depth * 12;
ptr = retval = g_new0 (gchar, n);
end = ptr + n;
g_snprintf (retval, end - ptr, "%d", path->indices[0]);
while (*ptr != '\000')
ptr++;
for (i = 1; i < path->depth; i++)
{
g_snprintf (ptr, end - ptr, ":%d", path->indices[i]);
while (*ptr != '\000')
ptr++;
}
return retval;
}
/**
* gtk_tree_path_new_first:
*
* Creates a new #GtkTreePath-struct.
*
* The string representation of this path is “0”.
*
* Return value: A new #GtkTreePath-struct
*/
GtkTreePath *
gtk_tree_path_new_first (void)
{
GtkTreePath *retval;
retval = gtk_tree_path_new ();
gtk_tree_path_append_index (retval, 0);
return retval;
}
/**
* gtk_tree_path_append_index:
* @path: a #GtkTreePath-struct
* @index_: the index
*
* Appends a new index to a path.
*
* As a result, the depth of the path is increased.
*/
void
gtk_tree_path_append_index (GtkTreePath *path,
gint index_)
{
g_return_if_fail (path != NULL);
g_return_if_fail (index_ >= 0);
if (path->depth == path->alloc)
{
gint *indices;
path->alloc = MAX (path->alloc * 2, 1);
indices = g_new (gint, path->alloc);
memcpy (indices, path->indices, path->depth * sizeof (gint));
g_free (path->indices);
path->indices = indices;
}
path->depth += 1;
path->indices[path->depth - 1] = index_;
}
/**
* gtk_tree_path_prepend_index:
* @path: a #GtkTreePath-struct
* @index_: the index
*
* Prepends a new index to a path.
*
* As a result, the depth of the path is increased.
*/
void
gtk_tree_path_prepend_index (GtkTreePath *path,
gint index)
{
if (path->depth == path->alloc)
{
gint *indices;
path->alloc = MAX (path->alloc * 2, 1);
indices = g_new (gint, path->alloc);
memcpy (indices + 1, path->indices, path->depth * sizeof (gint));
g_free (path->indices);
path->indices = indices;
}
else if (path->depth > 0)
memmove (path->indices + 1, path->indices, path->depth * sizeof (gint));
path->depth += 1;
path->indices[0] = index;
}
/**
* gtk_tree_path_get_depth:
* @path: a #GtkTreePath-struct
*
* Returns the current depth of @path.
*
* Return value: The depth of @path
*/
gint
gtk_tree_path_get_depth (GtkTreePath *path)
{
g_return_val_if_fail (path != NULL, 0);
return path->depth;
}
/**
* gtk_tree_path_get_indices: (skip)
* @path: a #GtkTreePath-struct
*
* Returns the current indices of @path.
*
* This is an array of integers, each representing a node in a tree.
* This value should not be freed.
*
* The length of the array can be obtained with gtk_tree_path_get_depth().
*
* Return value: The current indices, or %NULL
*/
gint *
gtk_tree_path_get_indices (GtkTreePath *path)
{
g_return_val_if_fail (path != NULL, NULL);
return path->indices;
}
/**
* gtk_tree_path_get_indices_with_depth: (rename-to gtk_tree_path_get_indices)
* @path: a #GtkTreePath-struct
* @depth: (out) (allow-none): return location for number of elements
* returned in the integer array, or %NULL
*
* Returns the current indices of @path.
*
* This is an array of integers, each representing a node in a tree.
* It also returns the number of elements in the array.
* The array should not be freed.
*
* Return value: (array length=depth) (transfer none): The current
* indices, or %NULL
*
* Since: 3.0
*/
gint *
gtk_tree_path_get_indices_with_depth (GtkTreePath *path,
gint *depth)
{
g_return_val_if_fail (path != NULL, NULL);
if (depth)
*depth = path->depth;
return path->indices;
}
/**
* gtk_tree_path_free:
* @path: (allow-none): a #GtkTreePath-struct
*
* Frees @path. If @path is %NULL, it simply returns.
*/
void
gtk_tree_path_free (GtkTreePath *path)
{
if (!path)
return;
g_free (path->indices);
g_slice_free (GtkTreePath, path);
}
/**
* gtk_tree_path_copy:
* @path: a #GtkTreePath-struct
*
* Creates a new #GtkTreePath-struct as a copy of @path.
*
* Return value: a new #GtkTreePath-struct
*/
GtkTreePath *
gtk_tree_path_copy (const GtkTreePath *path)
{
GtkTreePath *retval;
g_return_val_if_fail (path != NULL, NULL);
retval = g_slice_new (GtkTreePath);
retval->depth = path->depth;
retval->alloc = retval->depth;
retval->indices = g_new (gint, path->alloc);
memcpy (retval->indices, path->indices, path->depth * sizeof (gint));
return retval;
}
G_DEFINE_BOXED_TYPE (GtkTreePath, gtk_tree_path,
gtk_tree_path_copy,
gtk_tree_path_free)
/**
* gtk_tree_path_compare:
* @a: a #GtkTreePath-struct
* @b: a #GtkTreePath-struct to compare with
*
* Compares two paths.
*
* If @a appears before @b in a tree, then -1 is returned.
* If @b appears before @a, then 1 is returned.
* If the two nodes are equal, then 0 is returned.
*
* Return value: the relative positions of @a and @b
*/
gint
gtk_tree_path_compare (const GtkTreePath *a,
const GtkTreePath *b)
{
gint p = 0, q = 0;
g_return_val_if_fail (a != NULL, 0);
g_return_val_if_fail (b != NULL, 0);
g_return_val_if_fail (a->depth > 0, 0);
g_return_val_if_fail (b->depth > 0, 0);
do
{
if (a->indices[p] == b->indices[q])
continue;
return (a->indices[p] < b->indices[q]?-1:1);
}
while (++p < a->depth && ++q < b->depth);
if (a->depth == b->depth)
return 0;
return (a->depth < b->depth?-1:1);
}
/**
* gtk_tree_path_is_ancestor:
* @path: a #GtkTreePath-struct
* @descendant: another #GtkTreePath-struct
*
* Returns %TRUE if @descendant is a descendant of @path.
*
* Return value: %TRUE if @descendant is contained inside @path
*/
gboolean
gtk_tree_path_is_ancestor (GtkTreePath *path,
GtkTreePath *descendant)
{
gint i;
g_return_val_if_fail (path != NULL, FALSE);
g_return_val_if_fail (descendant != NULL, FALSE);
/* can't be an ancestor if we're deeper */
if (path->depth >= descendant->depth)
return FALSE;
i = 0;
while (i < path->depth)
{
if (path->indices[i] != descendant->indices[i])
return FALSE;
++i;
}
return TRUE;
}
/**
* gtk_tree_path_is_descendant:
* @path: a #GtkTreePath-struct
* @ancestor: another #GtkTreePath-struct
*
* Returns %TRUE if @path is a descendant of @ancestor.
*
* Return value: %TRUE if @ancestor contains @path somewhere below it
*/
gboolean
gtk_tree_path_is_descendant (GtkTreePath *path,
GtkTreePath *ancestor)
{
gint i;
g_return_val_if_fail (path != NULL, FALSE);
g_return_val_if_fail (ancestor != NULL, FALSE);
/* can't be a descendant if we're shallower in the tree */
if (path->depth <= ancestor->depth)
return FALSE;
i = 0;
while (i < ancestor->depth)
{
if (path->indices[i] != ancestor->indices[i])
return FALSE;
++i;
}
return TRUE;
}
/**
* gtk_tree_path_next:
* @path: a #GtkTreePath-struct
*
* Moves the @path to point to the next node at the current depth.
*/
void
gtk_tree_path_next (GtkTreePath *path)
{
g_return_if_fail (path != NULL);
g_return_if_fail (path->depth > 0);
path->indices[path->depth - 1] ++;
}
/**
* gtk_tree_path_prev:
* @path: a #GtkTreePath-struct
*
* Moves the @path to point to the previous node at the
* current depth, if it exists.
*
* Return value: %TRUE if @path has a previous node, and
* the move was made
*/
gboolean
gtk_tree_path_prev (GtkTreePath *path)
{
g_return_val_if_fail (path != NULL, FALSE);
if (path->depth == 0)
return FALSE;
if (path->indices[path->depth - 1] == 0)
return FALSE;
path->indices[path->depth - 1] -= 1;
return TRUE;
}
/**
* gtk_tree_path_up:
* @path: a #GtkTreePath-struct
*
* Moves the @path to point to its parent node, if it has a parent.
*
* Return value: %TRUE if @path has a parent, and the move was made
*/
gboolean
gtk_tree_path_up (GtkTreePath *path)
{
g_return_val_if_fail (path != NULL, FALSE);
if (path->depth == 0)
return FALSE;
path->depth--;
return TRUE;
}
/**
* gtk_tree_path_down:
* @path: a #GtkTreePath-struct
*
* Moves @path to point to the first child of the current path.
*/
void
gtk_tree_path_down (GtkTreePath *path)
{
g_return_if_fail (path != NULL);
gtk_tree_path_append_index (path, 0);
}
/**
* gtk_tree_iter_copy:
* @iter: a #GtkTreeIter-struct
*
* Creates a dynamically allocated tree iterator as a copy of @iter.
*
* This function is not intended for use in applications,
* because you can just copy the structs by value
* (`GtkTreeIter new_iter = iter;`).
* You must free this iter with gtk_tree_iter_free().
*
* Return value: a newly-allocated copy of @iter
*/
GtkTreeIter *
gtk_tree_iter_copy (GtkTreeIter *iter)
{
GtkTreeIter *retval;
g_return_val_if_fail (iter != NULL, NULL);
retval = g_slice_new (GtkTreeIter);
*retval = *iter;
return retval;
}
/**
* gtk_tree_iter_free:
* @iter: a dynamically allocated tree iterator
*
* Frees an iterator that has been allocated by gtk_tree_iter_copy().
*
* This function is mainly used for language bindings.
*/
void
gtk_tree_iter_free (GtkTreeIter *iter)
{
g_return_if_fail (iter != NULL);
g_slice_free (GtkTreeIter, iter);
}
G_DEFINE_BOXED_TYPE (GtkTreeIter, gtk_tree_iter,
gtk_tree_iter_copy,
gtk_tree_iter_free)
/**
* gtk_tree_model_get_flags:
* @tree_model: a #GtkTreeModel
*
* Returns a set of flags supported by this interface.
*
* The flags are a bitwise combination of #GtkTreeModelFlags.
* The flags supported should not change during the lifetime
* of the @tree_model.
*
* Return value: the flags supported by this interface
*/
GtkTreeModelFlags
gtk_tree_model_get_flags (GtkTreeModel *tree_model)
{
GtkTreeModelIface *iface;
g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), 0);
iface = GTK_TREE_MODEL_GET_IFACE (tree_model);
if (iface->get_flags)
return (* iface->get_flags) (tree_model);
return 0;
}
/**
* gtk_tree_model_get_n_columns:
* @tree_model: a #GtkTreeModel
*
* Returns the number of columns supported by @tree_model.
*
* Return value: the number of columns
*/
gint
gtk_tree_model_get_n_columns (GtkTreeModel *tree_model)
{
GtkTreeModelIface *iface;
g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), 0);
iface = GTK_TREE_MODEL_GET_IFACE (tree_model);
g_return_val_if_fail (iface->get_n_columns != NULL, 0);
return (* iface->get_n_columns) (tree_model);
}
/**
* gtk_tree_model_get_column_type:
* @tree_model: a #GtkTreeModel
* @index_: the column index
*
* Returns the type of the column.
*
* Return value: (transfer none): the type of the column
*/
GType
gtk_tree_model_get_column_type (GtkTreeModel *tree_model,
gint index)
{
GtkTreeModelIface *iface;
g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), G_TYPE_INVALID);
iface = GTK_TREE_MODEL_GET_IFACE (tree_model);
g_return_val_if_fail (iface->get_column_type != NULL, G_TYPE_INVALID);
g_return_val_if_fail (index >= 0, G_TYPE_INVALID);
return (* iface->get_column_type) (tree_model, index);
}
/**
* gtk_tree_model_get_iter:
* @tree_model: a #GtkTreeModel
* @iter: (out): the uninitialized #GtkTreeIter-struct
* @path: the #GtkTreePath-struct
*
* Sets @iter to a valid iterator pointing to @path. If @path does
* not exist, @iter is set to an invalid iterator and %FALSE is returned.
*
* Return value: %TRUE, if @iter was set
*/
gboolean
gtk_tree_model_get_iter (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreePath *path)
{
GtkTreeModelIface *iface;
g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
g_return_val_if_fail (path != NULL, FALSE);
iface = GTK_TREE_MODEL_GET_IFACE (tree_model);
g_return_val_if_fail (iface->get_iter != NULL, FALSE);
g_return_val_if_fail (path->depth > 0, FALSE);
INITIALIZE_TREE_ITER (iter);
return (* iface->get_iter) (tree_model, iter, path);
}
/**
* gtk_tree_model_get_iter_from_string:
* @tree_model: a #GtkTreeModel
* @iter: (out): an uninitialized #GtkTreeIter-struct
* @path_string: a string representation of a #GtkTreePath-struct
*
* Sets @iter to a valid iterator pointing to @path_string, if it
* exists. Otherwise, @iter is left invalid and %FALSE is returned.
*
* Return value: %TRUE, if @iter was set
*/
gboolean
gtk_tree_model_get_iter_from_string (GtkTreeModel *tree_model,
GtkTreeIter *iter,
const gchar *path_string)
{
gboolean retval;
GtkTreePath *path;
g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
g_return_val_if_fail (path_string != NULL, FALSE);
path = gtk_tree_path_new_from_string (path_string);
g_return_val_if_fail (path != NULL, FALSE);
retval = gtk_tree_model_get_iter (tree_model, iter, path);
gtk_tree_path_free (path);
return retval;
}
/**
* gtk_tree_model_get_string_from_iter:
* @tree_model: a #GtkTreeModel
* @iter: a #GtkTreeIter-struct
*
* Generates a string representation of the iter.
*
* This string is a “:” separated list of numbers.
* For example, “4:10:0:3” would be an acceptable
* return value for this string.
*
* Return value: a newly-allocated string.
* Must be freed with g_free().
*
* Since: 2.2
*/
gchar *
gtk_tree_model_get_string_from_iter (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkTreePath *path;
gchar *ret;
g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), NULL);
g_return_val_if_fail (iter != NULL, NULL);
path = gtk_tree_model_get_path (tree_model, iter);
g_return_val_if_fail (path != NULL, NULL);
ret = gtk_tree_path_to_string (path);
gtk_tree_path_free (path);
return ret;
}
/**
* gtk_tree_model_get_iter_first:
* @tree_model: a #GtkTreeModel
* @iter: (out): the uninitialized #GtkTreeIter-struct
*
* Initializes @iter with the first iterator in the tree
* (the one at the path "0") and returns %TRUE. Returns
* %FALSE if the tree is empty.
*
* Return value: %TRUE, if @iter was set
*/
gboolean
gtk_tree_model_get_iter_first (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkTreePath *path;
gboolean retval;
g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
path = gtk_tree_path_new_first ();
retval = gtk_tree_model_get_iter (tree_model, iter, path);
gtk_tree_path_free (path);
return retval;
}
/**
* gtk_tree_model_get_path:
* @tree_model: a #GtkTreeModel
* @iter: the #GtkTreeIter-struct
*
* Returns a newly-created #GtkTreePath-struct referenced by @iter.
*
* This path should be freed with gtk_tree_path_free().
*
* Return value: a newly-created #GtkTreePath-struct
*/
GtkTreePath *
gtk_tree_model_get_path (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkTreeModelIface *iface;
g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), NULL);
g_return_val_if_fail (iter != NULL, NULL);
iface = GTK_TREE_MODEL_GET_IFACE (tree_model);
g_return_val_if_fail (iface->get_path != NULL, NULL);
return (* iface->get_path) (tree_model, iter);
}
/**
* gtk_tree_model_get_value:
* @tree_model: a #GtkTreeModel
* @iter: the #GtkTreeIter-struct
* @column: the column to lookup the value at
* @value: (out) (transfer none): an empty #GValue to set
*
* Initializes and sets @value to that at @column.
*
* When done with @value, g_value_unset() needs to be called
* to free any allocated memory.
*/
void
gtk_tree_model_get_value (GtkTreeModel *tree_model,
GtkTreeIter *iter,
gint column,
GValue *value)
{
GtkTreeModelIface *iface;
g_return_if_fail (GTK_IS_TREE_MODEL (tree_model));
g_return_if_fail (iter != NULL);
g_return_if_fail (value != NULL);
iface = GTK_TREE_MODEL_GET_IFACE (tree_model);
g_return_if_fail (iface->get_value != NULL);
(* iface->get_value) (tree_model, iter, column, value);
}
/**
* gtk_tree_model_iter_next:
* @tree_model: a #GtkTreeModel
* @iter: (in): the #GtkTreeIter-struct
*
* Sets @iter to point to the node following it at the current level.
*
* If there is no next @iter, %FALSE is returned and @iter is set
* to be invalid.
*
* Return value: %TRUE if @iter has been changed to the next node
*/
gboolean
gtk_tree_model_iter_next (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkTreeModelIface *iface;
g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
iface = GTK_TREE_MODEL_GET_IFACE (tree_model);
g_return_val_if_fail (iface->iter_next != NULL, FALSE);
return (* iface->iter_next) (tree_model, iter);
}
static gboolean
gtk_tree_model_iter_previous_default (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
gboolean retval;
GtkTreePath *path;
path = gtk_tree_model_get_path (tree_model, iter);
if (path == NULL)
return FALSE;
retval = gtk_tree_path_prev (path) &&
gtk_tree_model_get_iter (tree_model, iter, path);
if (retval == FALSE)
iter->stamp = 0;
gtk_tree_path_free (path);
return retval;
}
/**
* gtk_tree_model_iter_previous:
* @tree_model: a #GtkTreeModel
* @iter: (in): the #GtkTreeIter-struct
*
* Sets @iter to point to the previous node at the current level.
*
* If there is no previous @iter, %FALSE is returned and @iter is
* set to be invalid.
*
* Return value: %TRUE if @iter has been changed to the previous node
*
* Since: 3.0
*/
gboolean
gtk_tree_model_iter_previous (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
gboolean retval;
GtkTreeModelIface *iface;
g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
iface = GTK_TREE_MODEL_GET_IFACE (tree_model);
if (iface->iter_previous)
retval = (* iface->iter_previous) (tree_model, iter);
else
retval = gtk_tree_model_iter_previous_default (tree_model, iter);
return retval;
}
/**
* gtk_tree_model_iter_children:
* @tree_model: a #GtkTreeModel
* @iter: (out): the new #GtkTreeIter-struct to be set to the child
* @parent: (allow-none): the #GtkTreeIter-struct, or %NULL
*
* Sets @iter to point to the first child of @parent.
*
* If @parent has no children, %FALSE is returned and @iter is
* set to be invalid. @parent will remain a valid node after this
* function has been called.
*
* If @parent is %NULL returns the first node, equivalent to
* `gtk_tree_model_get_iter_first (tree_model, iter);`
*
* Return value: %TRUE, if @child has been set to the first child
*/
gboolean
gtk_tree_model_iter_children (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent)
{
GtkTreeModelIface *iface;
g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
iface = GTK_TREE_MODEL_GET_IFACE (tree_model);
g_return_val_if_fail (iface->iter_children != NULL, FALSE);
INITIALIZE_TREE_ITER (iter);
return (* iface->iter_children) (tree_model, iter, parent);
}
/**
* gtk_tree_model_iter_has_child:
* @tree_model: a #GtkTreeModel
* @iter: the #GtkTreeIter-struct to test for children
*
* Returns %TRUE if @iter has children, %FALSE otherwise.
*
* Return value: %TRUE if @iter has children
*/
gboolean
gtk_tree_model_iter_has_child (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkTreeModelIface *iface;
g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
iface = GTK_TREE_MODEL_GET_IFACE (tree_model);
g_return_val_if_fail (iface->iter_has_child != NULL, FALSE);
return (* iface->iter_has_child) (tree_model, iter);
}
/**
* gtk_tree_model_iter_n_children:
* @tree_model: a #GtkTreeModel
* @iter: (allow-none): the #GtkTreeIter-struct, or %NULL
*
* Returns the number of children that @iter has.
*
* As a special case, if @iter is %NULL, then the number
* of toplevel nodes is returned.
*
* Return value: the number of children of @iter
*/
gint
gtk_tree_model_iter_n_children (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkTreeModelIface *iface;
g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), 0);
iface = GTK_TREE_MODEL_GET_IFACE (tree_model);
g_return_val_if_fail (iface->iter_n_children != NULL, 0);
return (* iface->iter_n_children) (tree_model, iter);
}
/**
* gtk_tree_model_iter_nth_child:
* @tree_model: a #GtkTreeModel
* @iter: (out): the #GtkTreeIter-struct to set to the nth child
* @parent: (allow-none): the #GtkTreeIter-struct to get the child from, or %NULL.
* @n: the index of the desired child
*
* Sets @iter to be the child of @parent, using the given index.
*
* The first index is 0. If @n is too big, or @parent has no children,
* @iter is set to an invalid iterator and %FALSE is returned. @parent
* will remain a valid node after this function has been called. As a
* special case, if @parent is %NULL, then the @n-th root node
* is set.
*
* Return value: %TRUE, if @parent has an @n-th child
*/
gboolean
gtk_tree_model_iter_nth_child (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint n)
{
GtkTreeModelIface *iface;
g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
g_return_val_if_fail (n >= 0, FALSE);
iface = GTK_TREE_MODEL_GET_IFACE (tree_model);
g_return_val_if_fail (iface->iter_nth_child != NULL, FALSE);
INITIALIZE_TREE_ITER (iter);
return (* iface->iter_nth_child) (tree_model, iter, parent, n);
}
/**
* gtk_tree_model_iter_parent:
* @tree_model: a #GtkTreeModel
* @iter: (out): the new #GtkTreeIter-struct to set to the parent
* @child: the #GtkTreeIter-struct
*
* Sets @iter to be the parent of @child.
*
* If @child is at the toplevel, and doesn’t have a parent, then
* @iter is set to an invalid iterator and %FALSE is returned.
* @child will remain a valid node after this function has been
* called.
*
* Return value: %TRUE, if @iter is set to the parent of @child
*/
gboolean
gtk_tree_model_iter_parent (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *child)
{
GtkTreeModelIface *iface;
g_return_val_if_fail (GTK_IS_TREE_MODEL (tree_model), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
g_return_val_if_fail (child != NULL, FALSE);
iface = GTK_TREE_MODEL_GET_IFACE (tree_model);
g_return_val_if_fail (iface->iter_parent != NULL, FALSE);
INITIALIZE_TREE_ITER (iter);
return (* iface->iter_parent) (tree_model, iter, child);
}
/**
* gtk_tree_model_ref_node:
* @tree_model: a #GtkTreeModel
* @iter: the #GtkTreeIter-struct
*
* Lets the tree ref the node.
*
* This is an optional method for models to implement.
* To be more specific, models may ignore this call as it exists
* primarily for performance reasons.
*
* This function is primarily meant as a way for views to let
* caching models know when nodes are being displayed (and hence,
* whether or not to cache that node). Being displayed means a node
* is in an expanded branch, regardless of whether the node is currently
* visible in the viewport. For example, a file-system based model
* would not want to keep the entire file-hierarchy in memory,
* just the sections that are currently being displayed by
* every current view.
*
* A model should be expected to be able to get an iter independent
* of its reffed state.
*/
void
gtk_tree_model_ref_node (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkTreeModelIface *iface;
g_return_if_fail (GTK_IS_TREE_MODEL (tree_model));
iface = GTK_TREE_MODEL_GET_IFACE (tree_model);
if (iface->ref_node)
(* iface->ref_node) (tree_model, iter);
}
/**
* gtk_tree_model_unref_node:
* @tree_model: a #GtkTreeModel
* @iter: the #GtkTreeIter-struct
*
* Lets the tree unref the node.
*
* This is an optional method for models to implement.
* To be more specific, models may ignore this call as it exists
* primarily for performance reasons. For more information on what
* this means, see gtk_tree_model_ref_node().
*
* Please note that nodes that are deleted are not unreffed.
*/
void
gtk_tree_model_unref_node (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkTreeModelIface *iface;
g_return_if_fail (GTK_IS_TREE_MODEL (tree_model));
g_return_if_fail (iter != NULL);
iface = GTK_TREE_MODEL_GET_IFACE (tree_model);
if (iface->unref_node)
(* iface->unref_node) (tree_model, iter);
}
/**
* gtk_tree_model_get:
* @tree_model: a #GtkTreeModel
* @iter: a row in @tree_model
* @...: pairs of column number and value return locations,
* terminated by -1
*
* Gets the value of one or more cells in the row referenced by @iter.
* The variable argument list should contain integer column numbers,
* each column number followed by a place to store the value being
* retrieved. The list is terminated by a -1. For example, to get a
* value from column 0 with type %G_TYPE_STRING, you would
* write: `gtk_tree_model_get (model, iter, 0, &place_string_here, -1)`,
* where `place_string_here` is a #gchararray
* to be filled with the string.
*
* Returned values with type %G_TYPE_OBJECT have to be unreferenced,
* values with type %G_TYPE_STRING or %G_TYPE_BOXED have to be freed.
* Other values are passed by value.
*/
void
gtk_tree_model_get (GtkTreeModel *tree_model,
GtkTreeIter *iter,
...)
{
va_list var_args;
g_return_if_fail (GTK_IS_TREE_MODEL (tree_model));
g_return_if_fail (iter != NULL);
va_start (var_args, iter);
gtk_tree_model_get_valist (tree_model, iter, var_args);
va_end (var_args);
}
/**
* gtk_tree_model_get_valist:
* @tree_model: a #GtkTreeModel
* @iter: a row in @tree_model
* @var_args: va_list of column/return location pairs
*
* See gtk_tree_model_get(), this version takes a va_list
* for language bindings to use.
*/
void
gtk_tree_model_get_valist (GtkTreeModel *tree_model,
GtkTreeIter *iter,
va_list var_args)
{
gint column;
g_return_if_fail (GTK_IS_TREE_MODEL (tree_model));
g_return_if_fail (iter != NULL);
column = va_arg (var_args, gint);
while (column != -1)
{
GValue value = G_VALUE_INIT;
gchar *error = NULL;
if (column >= gtk_tree_model_get_n_columns (tree_model))
{
g_warning ("%s: Invalid column number %d accessed (remember to end your list of columns with a -1)", G_STRLOC, column);
break;
}
gtk_tree_model_get_value (GTK_TREE_MODEL (tree_model), iter, column, &value);
G_VALUE_LCOPY (&value, var_args, 0, &error);
if (error)
{
g_warning ("%s: %s", G_STRLOC, error);
g_free (error);
/* we purposely leak the value here, it might not be
* in a sane state if an error condition occurred
*/
break;
}
g_value_unset (&value);
column = va_arg (var_args, gint);
}
}
/**
* gtk_tree_model_row_changed:
* @tree_model: a #GtkTreeModel
* @path: a #GtkTreePath-struct pointing to the changed row
* @iter: a valid #GtkTreeIter-struct pointing to the changed row
*
* Emits the #GtkTreeModel::row-changed signal on @tree_model.
*/
void
gtk_tree_model_row_changed (GtkTreeModel *tree_model,
GtkTreePath *path,
GtkTreeIter *iter)
{
g_return_if_fail (GTK_IS_TREE_MODEL (tree_model));
g_return_if_fail (path != NULL);
g_return_if_fail (iter != NULL);
g_signal_emit (tree_model, tree_model_signals[ROW_CHANGED], 0, path, iter);
}
/**
* gtk_tree_model_row_inserted:
* @tree_model: a #GtkTreeModel
* @path: a #GtkTreePath-struct pointing to the inserted row
* @iter: a valid #GtkTreeIter-struct pointing to the inserted row
*
* Emits the #GtkTreeModel::row-inserted signal on @tree_model.
*/
void
gtk_tree_model_row_inserted (GtkTreeModel *tree_model,
GtkTreePath *path,
GtkTreeIter *iter)
{
g_return_if_fail (GTK_IS_TREE_MODEL (tree_model));
g_return_if_fail (path != NULL);
g_return_if_fail (iter != NULL);
g_signal_emit (tree_model, tree_model_signals[ROW_INSERTED], 0, path, iter);
}
/**
* gtk_tree_model_row_has_child_toggled:
* @tree_model: a #GtkTreeModel
* @path: a #GtkTreePath-struct pointing to the changed row
* @iter: a valid #GtkTreeIter-struct pointing to the changed row
*
* Emits the #GtkTreeModel::row-has-child-toggled signal on
* @tree_model. This should be called by models after the child
* state of a node changes.
*/
void
gtk_tree_model_row_has_child_toggled (GtkTreeModel *tree_model,
GtkTreePath *path,
GtkTreeIter *iter)
{
g_return_if_fail (GTK_IS_TREE_MODEL (tree_model));
g_return_if_fail (path != NULL);
g_return_if_fail (iter != NULL);
g_signal_emit (tree_model, tree_model_signals[ROW_HAS_CHILD_TOGGLED], 0, path, iter);
}
/**
* gtk_tree_model_row_deleted:
* @tree_model: a #GtkTreeModel
* @path: a #GtkTreePath-struct pointing to the previous location of
* the deleted row
*
* Emits the #GtkTreeModel::row-deleted signal on @tree_model.
*
* This should be called by models after a row has been removed.
* The location pointed to by @path should be the location that
* the row previously was at. It may not be a valid location anymore.
*
* Nodes that are deleted are not unreffed, this means that any
* outstanding references on the deleted node should not be released.
*/
void
gtk_tree_model_row_deleted (GtkTreeModel *tree_model,
GtkTreePath *path)
{
g_return_if_fail (GTK_IS_TREE_MODEL (tree_model));
g_return_if_fail (path != NULL);
g_signal_emit (tree_model, tree_model_signals[ROW_DELETED], 0, path);
}
/**
* gtk_tree_model_rows_reordered: (skip)
* @tree_model: a #GtkTreeModel
* @path: a #GtkTreePath-struct pointing to the tree node whose children
* have been reordered
* @iter: a valid #GtkTreeIter-struct pointing to the node whose children
* have been reordered, or %NULL if the depth of @path is 0
* @new_order: an array of integers mapping the current position of
* each child to its old position before the re-ordering,
* i.e. @new_order`[newpos] = oldpos`
*
* Emits the #GtkTreeModel::rows-reordered signal on @tree_model.
*
* This should be called by models when their rows have been
* reordered.
*/
void
gtk_tree_model_rows_reordered (GtkTreeModel *tree_model,
GtkTreePath *path,
GtkTreeIter *iter,
gint *new_order)
{
g_return_if_fail (GTK_IS_TREE_MODEL (tree_model));
g_return_if_fail (new_order != NULL);
g_signal_emit (tree_model, tree_model_signals[ROWS_REORDERED], 0, path, iter, new_order);
}
/**
* gtk_tree_model_rows_reordered_with_length: (rename-to gtk_tree_model_rows_reordered)
* @tree_model: a #GtkTreeModel
* @path: a #GtkTreePath-struct pointing to the tree node whose children
* have been reordered
* @iter: (allow-none): a valid #GtkTreeIter-struct pointing to the node
* whose children have been reordered, or %NULL if the depth
* of @path is 0
* @new_order: (array length=length): an array of integers
* mapping the current position of each child to its old
* position before the re-ordering,
* i.e. @new_order`[newpos] = oldpos`
* @length: length of @new_order array
*
* Emits the #GtkTreeModel::rows-reordered signal on @tree_model.
*
* This should be called by models when their rows have been
* reordered.
*
* Since: 3.10
*/
void
gtk_tree_model_rows_reordered_with_length (GtkTreeModel *tree_model,
GtkTreePath *path,
GtkTreeIter *iter,
gint *new_order,
gint length)
{
g_return_if_fail (GTK_IS_TREE_MODEL (tree_model));
g_return_if_fail (new_order != NULL);
g_return_if_fail (length == gtk_tree_model_iter_n_children (tree_model, iter));
g_signal_emit (tree_model, tree_model_signals[ROWS_REORDERED], 0, path, iter, new_order);
}
static gboolean
gtk_tree_model_foreach_helper (GtkTreeModel *model,
GtkTreeIter *iter,
GtkTreePath *path,
GtkTreeModelForeachFunc func,
gpointer user_data)
{
do
{
GtkTreeIter child;
if ((* func) (model, path, iter, user_data))
return TRUE;
if (gtk_tree_model_iter_children (model, &child, iter))
{
gtk_tree_path_down (path);
if (gtk_tree_model_foreach_helper (model, &child, path, func, user_data))
return TRUE;
gtk_tree_path_up (path);
}
gtk_tree_path_next (path);
}
while (gtk_tree_model_iter_next (model, iter));
return FALSE;
}
/**
* gtk_tree_model_foreach:
* @model: a #GtkTreeModel
* @func: (scope call): a function to be called on each row
* @user_data: user data to passed to @func
*
* Calls func on each node in model in a depth-first fashion.
*
* If @func returns %TRUE, then the tree ceases to be walked,
* and gtk_tree_model_foreach() returns.
*/
void
gtk_tree_model_foreach (GtkTreeModel *model,
GtkTreeModelForeachFunc func,
gpointer user_data)
{
GtkTreePath *path;
GtkTreeIter iter;
g_return_if_fail (GTK_IS_TREE_MODEL (model));
g_return_if_fail (func != NULL);
path = gtk_tree_path_new_first ();
if (gtk_tree_model_get_iter (model, &iter, path) == FALSE)
{
gtk_tree_path_free (path);
return;
}
gtk_tree_model_foreach_helper (model, &iter, path, func, user_data);
gtk_tree_path_free (path);
}
/*
* GtkTreeRowReference
*/
static void gtk_tree_row_reference_unref_path (GtkTreePath *path,
GtkTreeModel *model,
gint depth);
G_DEFINE_BOXED_TYPE (GtkTreeRowReference, gtk_tree_row_reference,
gtk_tree_row_reference_copy,
gtk_tree_row_reference_free)
struct _GtkTreeRowReference
{
GObject *proxy;
GtkTreeModel *model;
GtkTreePath *path;
};
static void
release_row_references (gpointer data)
{
RowRefList *refs = data;
GSList *tmp_list = NULL;
tmp_list = refs->list;
while (tmp_list != NULL)
{
GtkTreeRowReference *reference = tmp_list->data;
if (reference->proxy == (GObject *)reference->model)
reference->model = NULL;
reference->proxy = NULL;
/* we don't free the reference, users are responsible for that. */
tmp_list = g_slist_next (tmp_list);
}
g_slist_free (refs->list);
g_free (refs);
}
static void
gtk_tree_row_ref_inserted (RowRefList *refs,
GtkTreePath *path,
GtkTreeIter *iter)
{
GSList *tmp_list;
if (refs == NULL)
return;
/* This function corrects the path stored in the reference to
* account for an insertion. Note that it's called _after_ the
* insertion with the path to the newly-inserted row. Which means
* that the inserted path is in a different "coordinate system" than
* the old path (e.g. if the inserted path was just before the old
* path, then inserted path and old path will be the same, and old
* path must be moved down one).
*/
tmp_list = refs->list;
while (tmp_list != NULL)
{
GtkTreeRowReference *reference = tmp_list->data;
if (reference->path == NULL)
goto done;
if (reference->path->depth >= path->depth)
{
gint i;
gboolean ancestor = TRUE;
for (i = 0; i < path->depth - 1; i ++)
{
if (path->indices[i] != reference->path->indices[i])
{
ancestor = FALSE;
break;
}
}
if (ancestor == FALSE)
goto done;
if (path->indices[path->depth-1] <= reference->path->indices[path->depth-1])
reference->path->indices[path->depth-1] += 1;
}
done:
tmp_list = g_slist_next (tmp_list);
}
}
static void
gtk_tree_row_ref_deleted (RowRefList *refs,
GtkTreePath *path)
{
GSList *tmp_list;
if (refs == NULL)
return;
/* This function corrects the path stored in the reference to
* account for an deletion. Note that it's called _after_ the
* deletion with the old path of the just-deleted row. Which means
* that the deleted path is the same now-defunct "coordinate system"
* as the path saved in the reference, which is what we want to fix.
*/
tmp_list = refs->list;
while (tmp_list != NULL)
{
GtkTreeRowReference *reference = tmp_list->data;
if (reference->path)
{
gint i;
if (path->depth > reference->path->depth)
goto next;
for (i = 0; i < path->depth - 1; i++)
{
if (path->indices[i] != reference->path->indices[i])
goto next;
}
/* We know it affects us. */
if (path->indices[i] == reference->path->indices[i])
{
if (reference->path->depth > path->depth)
/* some parent was deleted, trying to unref any node
* between the deleted parent and the node the reference
* is pointing to is bad, as those nodes are already gone.
*/
gtk_tree_row_reference_unref_path (reference->path, reference->model, path->depth - 1);
else
gtk_tree_row_reference_unref_path (reference->path, reference->model, reference->path->depth - 1);
gtk_tree_path_free (reference->path);
reference->path = NULL;
}
else if (path->indices[i] < reference->path->indices[i])
{
reference->path->indices[path->depth-1]-=1;
}
}
next:
tmp_list = g_slist_next (tmp_list);
}
}
static void
gtk_tree_row_ref_reordered (RowRefList *refs,
GtkTreePath *path,
GtkTreeIter *iter,
gint *new_order)
{
GSList *tmp_list;
gint length;
if (refs == NULL)
return;
tmp_list = refs->list;
while (tmp_list != NULL)
{
GtkTreeRowReference *reference = tmp_list->data;
length = gtk_tree_model_iter_n_children (GTK_TREE_MODEL (reference->model), iter);
if (length < 2)
return;
if ((reference->path) &&
(gtk_tree_path_is_ancestor (path, reference->path)))
{
gint ref_depth = gtk_tree_path_get_depth (reference->path);
gint depth = gtk_tree_path_get_depth (path);
if (ref_depth > depth)
{
gint i;
gint *indices = gtk_tree_path_get_indices (reference->path);
for (i = 0; i < length; i++)
{
if (new_order[i] == indices[depth])
{
indices[depth] = i;
break;
}
}
}
}
tmp_list = g_slist_next (tmp_list);
}
}
/* We do this recursively so that we can unref children nodes
* before their parent
*/
static void
gtk_tree_row_reference_unref_path_helper (GtkTreePath *path,
GtkTreeModel *model,
GtkTreeIter *parent_iter,
gint depth,
gint current_depth)
{
GtkTreeIter iter;
if (depth == current_depth)
return;
gtk_tree_model_iter_nth_child (model, &iter, parent_iter, path->indices[current_depth]);
gtk_tree_row_reference_unref_path_helper (path, model, &iter, depth, current_depth + 1);
gtk_tree_model_unref_node (model, &iter);
}
static void
gtk_tree_row_reference_unref_path (GtkTreePath *path,
GtkTreeModel *model,
gint depth)
{
GtkTreeIter iter;
if (depth <= 0)
return;
gtk_tree_model_iter_nth_child (model, &iter, NULL, path->indices[0]);
gtk_tree_row_reference_unref_path_helper (path, model, &iter, depth, 1);
gtk_tree_model_unref_node (model, &iter);
}
/**
* gtk_tree_row_reference_new:
* @model: a #GtkTreeModel
* @path: a valid #GtkTreePath-struct to monitor
*
* Creates a row reference based on @path.
*
* This reference will keep pointing to the node pointed to
* by @path, so long as it exists. Any changes that occur on @model are
* propagated, and the path is updated appropriately. If
* @path isn’t a valid path in @model, then %NULL is returned.
*
* Return value: a newly allocated #GtkTreeRowReference, or %NULL
*/
GtkTreeRowReference *
gtk_tree_row_reference_new (GtkTreeModel *model,
GtkTreePath *path)
{
g_return_val_if_fail (GTK_IS_TREE_MODEL (model), NULL);
g_return_val_if_fail (path != NULL, NULL);
/* We use the model itself as the proxy object; and call
* gtk_tree_row_reference_inserted(), etc, in the
* class closure (default handler) marshalers for the signal.
*/
return gtk_tree_row_reference_new_proxy (G_OBJECT (model), model, path);
}
/**
* gtk_tree_row_reference_new_proxy:
* @proxy: a proxy #GObject
* @model: a #GtkTreeModel
* @path: a valid #GtkTreePath-struct to monitor
*
* You do not need to use this function.
*
* Creates a row reference based on @path.
*
* This reference will keep pointing to the node pointed to
* by @path, so long as it exists. If @path isn’t a valid
* path in @model, then %NULL is returned. However, unlike
* references created with gtk_tree_row_reference_new(), it
* does not listen to the model for changes. The creator of
* the row reference must do this explicitly using
* gtk_tree_row_reference_inserted(), gtk_tree_row_reference_deleted(),
* gtk_tree_row_reference_reordered().
*
* These functions must be called exactly once per proxy when the
* corresponding signal on the model is emitted. This single call
* updates all row references for that proxy. Since built-in GTK+
* objects like #GtkTreeView already use this mechanism internally,
* using them as the proxy object will produce unpredictable results.
* Further more, passing the same object as @model and @proxy
* doesn’t work for reasons of internal implementation.
*
* This type of row reference is primarily meant by structures that
* need to carefully monitor exactly when a row reference updates
* itself, and is not generally needed by most applications.
*
* Return value: a newly allocated #GtkTreeRowReference, or %NULL
*/
GtkTreeRowReference *
gtk_tree_row_reference_new_proxy (GObject *proxy,
GtkTreeModel *model,
GtkTreePath *path)
{
GtkTreeRowReference *reference;
RowRefList *refs;
GtkTreeIter parent_iter;
gint i;
g_return_val_if_fail (G_IS_OBJECT (proxy), NULL);
g_return_val_if_fail (GTK_IS_TREE_MODEL (model), NULL);
g_return_val_if_fail (path != NULL, NULL);
g_return_val_if_fail (path->depth > 0, NULL);
/* check that the path is valid */
if (gtk_tree_model_get_iter (model, &parent_iter, path) == FALSE)
return NULL;
/* Now we want to ref every node */
gtk_tree_model_iter_nth_child (model, &parent_iter, NULL, path->indices[0]);
gtk_tree_model_ref_node (model, &parent_iter);
for (i = 1; i < path->depth; i++)
{
GtkTreeIter iter;
gtk_tree_model_iter_nth_child (model, &iter, &parent_iter, path->indices[i]);
gtk_tree_model_ref_node (model, &iter);
parent_iter = iter;
}
/* Make the row reference */
reference = g_new (GtkTreeRowReference, 1);
g_object_ref (proxy);
g_object_ref (model);
reference->proxy = proxy;
reference->model = model;
reference->path = gtk_tree_path_copy (path);
refs = g_object_get_data (G_OBJECT (proxy), ROW_REF_DATA_STRING);
if (refs == NULL)
{
refs = g_new (RowRefList, 1);
refs->list = NULL;
g_object_set_data_full (G_OBJECT (proxy),
I_(ROW_REF_DATA_STRING),
refs, release_row_references);
}
refs->list = g_slist_prepend (refs->list, reference);
return reference;
}
/**
* gtk_tree_row_reference_get_path:
* @reference: a #GtkTreeRowReference
*
* Returns a path that the row reference currently points to,
* or %NULL if the path pointed to is no longer valid.
*
* Return value: a current path, or %NULL
*/
GtkTreePath *
gtk_tree_row_reference_get_path (GtkTreeRowReference *reference)
{
g_return_val_if_fail (reference != NULL, NULL);
if (reference->proxy == NULL)
return NULL;
if (reference->path == NULL)
return NULL;
return gtk_tree_path_copy (reference->path);
}
/**
* gtk_tree_row_reference_get_model:
* @reference: a #GtkTreeRowReference
*
* Returns the model that the row reference is monitoring.
*
* Return value: (transfer none): the model
*
* Since: 2.8
*/
GtkTreeModel *
gtk_tree_row_reference_get_model (GtkTreeRowReference *reference)
{
g_return_val_if_fail (reference != NULL, NULL);
return reference->model;
}
/**
* gtk_tree_row_reference_valid:
* @reference: (allow-none): a #GtkTreeRowReference, or %NULL
*
* Returns %TRUE if the @reference is non-%NULL and refers to
* a current valid path.
*
* Return value: %TRUE if @reference points to a valid path
*/
gboolean
gtk_tree_row_reference_valid (GtkTreeRowReference *reference)
{
if (reference == NULL || reference->path == NULL)
return FALSE;
return TRUE;
}
/**
* gtk_tree_row_reference_copy:
* @reference: a #GtkTreeRowReference
*
* Copies a #GtkTreeRowReference.
*
* Return value: a copy of @reference
*
* Since: 2.2
*/
GtkTreeRowReference *
gtk_tree_row_reference_copy (GtkTreeRowReference *reference)
{
return gtk_tree_row_reference_new_proxy (reference->proxy,
reference->model,
reference->path);
}
/**
* gtk_tree_row_reference_free:
* @reference: (allow-none): a #GtkTreeRowReference, or %NULL
*
* Free’s @reference. @reference may be %NULL
*/
void
gtk_tree_row_reference_free (GtkTreeRowReference *reference)
{
RowRefList *refs;
if (reference == NULL)
return;
refs = g_object_get_data (G_OBJECT (reference->proxy), ROW_REF_DATA_STRING);
if (refs == NULL)
{
g_warning (G_STRLOC": bad row reference, proxy has no outstanding row references");
return;
}
refs->list = g_slist_remove (refs->list, reference);
if (refs->list == NULL)
{
g_object_set_data (G_OBJECT (reference->proxy),
I_(ROW_REF_DATA_STRING),
NULL);
}
if (reference->path)
{
gtk_tree_row_reference_unref_path (reference->path, reference->model, reference->path->depth);
gtk_tree_path_free (reference->path);
}
g_object_unref (reference->proxy);
g_object_unref (reference->model);
g_free (reference);
}
/**
* gtk_tree_row_reference_inserted:
* @proxy: a #GObject
* @path: the row position that was inserted
*
* Lets a set of row reference created by
* gtk_tree_row_reference_new_proxy() know that the
* model emitted the #GtkTreeModel::row-inserted signal.
*/
void
gtk_tree_row_reference_inserted (GObject *proxy,
GtkTreePath *path)
{
g_return_if_fail (G_IS_OBJECT (proxy));
gtk_tree_row_ref_inserted ((RowRefList *)g_object_get_data (proxy, ROW_REF_DATA_STRING), path, NULL);
}
/**
* gtk_tree_row_reference_deleted:
* @proxy: a #GObject
* @path: the path position that was deleted
*
* Lets a set of row reference created by
* gtk_tree_row_reference_new_proxy() know that the
* model emitted the #GtkTreeModel::row-deleted signal.
*/
void
gtk_tree_row_reference_deleted (GObject *proxy,
GtkTreePath *path)
{
g_return_if_fail (G_IS_OBJECT (proxy));
gtk_tree_row_ref_deleted ((RowRefList *)g_object_get_data (proxy, ROW_REF_DATA_STRING), path);
}
/**
* gtk_tree_row_reference_reordered: (skip)
* @proxy: a #GObject
* @path: the parent path of the reordered signal
* @iter: the iter pointing to the parent of the reordered
* @new_order: the new order of rows
*
* Lets a set of row reference created by
* gtk_tree_row_reference_new_proxy() know that the
* model emitted the #GtkTreeModel::rows-reordered signal.
*/
void
gtk_tree_row_reference_reordered (GObject *proxy,
GtkTreePath *path,
GtkTreeIter *iter,
gint *new_order)
{
g_return_if_fail (G_IS_OBJECT (proxy));
gtk_tree_row_ref_reordered ((RowRefList *)g_object_get_data (proxy, ROW_REF_DATA_STRING), path, iter, new_order);
}
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