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gtk2/gtk/gtkliststore.c
Benjamin Otte e37729756d liststore: Fix gtk_list_store_iter_is_valid() 
The iter may be invalid, so we may not read from it.

testsuite/gtk/treemodel tests this and valgrind is shouting about it,
but it never crashed until I just ran it...

This bug is from 2004 and the test is from 2007. I guess invalid memory
accesses don't get caught by CI much.
2020-03-06 05:44:11 +01:00

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/* gtkliststore.c
* Copyright (C) 2000 Red Hat, Inc., Jonathan Blandford <jrb@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <gobject/gvaluecollector.h>
#include "gtktreemodel.h"
#include "gtkliststore.h"
#include "gtktreedatalist.h"
#include "gtktreednd.h"
#include "gtkintl.h"
#include "gtkbuildable.h"
#include "gtkbuilderprivate.h"
/**
* SECTION:gtkliststore
* @Short_description: A list-like data structure that can be used with the GtkTreeView
* @Title: GtkListStore
* @See_also:#GtkTreeModel, #GtkTreeStore
*
* The #GtkListStore object is a list model for use with a #GtkTreeView
* widget. It implements the #GtkTreeModel interface, and consequentialy,
* can use all of the methods available there. It also implements the
* #GtkTreeSortable interface so it can be sorted by the view.
* Finally, it also implements the tree
* [drag and drop][gtk3-GtkTreeView-drag-and-drop]
* interfaces.
*
* The #GtkListStore can accept most GObject types as a column type, though
* it can’t accept all custom types. Internally, it will keep a copy of
* data passed in (such as a string or a boxed pointer). Columns that
* accept #GObjects are handled a little differently. The
* #GtkListStore will keep a reference to the object instead of copying the
* value. As a result, if the object is modified, it is up to the
* application writer to call gtk_tree_model_row_changed() to emit the
* #GtkTreeModel::row_changed signal. This most commonly affects lists with
* #GdkTextures stored.
*
* An example for creating a simple list store:
* |[<!-- language="C" -->
* enum {
* COLUMN_STRING,
* COLUMN_INT,
* COLUMN_BOOLEAN,
* N_COLUMNS
* };
*
* {
* GtkListStore *list_store;
* GtkTreePath *path;
* GtkTreeIter iter;
* gint i;
*
* list_store = gtk_list_store_new (N_COLUMNS,
* G_TYPE_STRING,
* G_TYPE_INT,
* G_TYPE_BOOLEAN);
*
* for (i = 0; i < 10; i++)
* {
* gchar *some_data;
*
* some_data = get_some_data (i);
*
* // Add a new row to the model
* gtk_list_store_append (list_store, &iter);
* gtk_list_store_set (list_store, &iter,
* COLUMN_STRING, some_data,
* COLUMN_INT, i,
* COLUMN_BOOLEAN, FALSE,
* -1);
*
* // As the store will keep a copy of the string internally,
* // we free some_data.
* g_free (some_data);
* }
*
* // Modify a particular row
* path = gtk_tree_path_new_from_string ("4");
* gtk_tree_model_get_iter (GTK_TREE_MODEL (list_store),
* &iter,
* path);
* gtk_tree_path_free (path);
* gtk_list_store_set (list_store, &iter,
* COLUMN_BOOLEAN, TRUE,
* -1);
* }
* ]|
*
* # Performance Considerations
*
* Internally, the #GtkListStore was implemented with a linked list with
* a tail pointer prior to GTK+ 2.6. As a result, it was fast at data
* insertion and deletion, and not fast at random data access. The
* #GtkListStore sets the #GTK_TREE_MODEL_ITERS_PERSIST flag, which means
* that #GtkTreeIters can be cached while the row exists. Thus, if
* access to a particular row is needed often and your code is expected to
* run on older versions of GTK+, it is worth keeping the iter around.
*
* # Atomic Operations
*
* It is important to note that only the methods
* gtk_list_store_insert_with_values() and gtk_list_store_insert_with_valuesv()
* are atomic, in the sense that the row is being appended to the store and the
* values filled in in a single operation with regard to #GtkTreeModel signaling.
* In contrast, using e.g. gtk_list_store_append() and then gtk_list_store_set()
* will first create a row, which triggers the #GtkTreeModel::row-inserted signal
* on #GtkListStore. The row, however, is still empty, and any signal handler
* connecting to #GtkTreeModel::row-inserted on this particular store should be prepared
* for the situation that the row might be empty. This is especially important
* if you are wrapping the #GtkListStore inside a #GtkTreeModelFilter and are
* using a #GtkTreeModelFilterVisibleFunc. Using any of the non-atomic operations
* to append rows to the #GtkListStore will cause the
* #GtkTreeModelFilterVisibleFunc to be visited with an empty row first; the
* function must be prepared for that.
*
* # GtkListStore as GtkBuildable
*
* The GtkListStore implementation of the GtkBuildable interface allows
* to specify the model columns with a <columns> element that may contain
* multiple <column> elements, each specifying one model column. The “type”
* attribute specifies the data type for the column.
*
* Additionally, it is possible to specify content for the list store
* in the UI definition, with the <data> element. It can contain multiple
* <row> elements, each specifying to content for one row of the list model.
* Inside a <row>, the <col> elements specify the content for individual cells.
*
* Note that it is probably more common to define your models in the code,
* and one might consider it a layering violation to specify the content of
* a list store in a UI definition, data, not presentation, and common wisdom
* is to separate the two, as far as possible.
*
* An example of a UI Definition fragment for a list store:
* |[<!-- language="C" -->
* <object class="GtkListStore">
* <columns>
* <column type="gchararray"/>
* <column type="gchararray"/>
* <column type="gint"/>
* </columns>
* <data>
* <row>
* <col id="0">John</col>
* <col id="1">Doe</col>
* <col id="2">25</col>
* </row>
* <row>
* <col id="0">Johan</col>
* <col id="1">Dahlin</col>
* <col id="2">50</col>
* </row>
* </data>
* </object>
* ]|
*/
struct _GtkListStorePrivate
{
GtkTreeIterCompareFunc default_sort_func;
GDestroyNotify default_sort_destroy;
GList *sort_list;
GType *column_headers;
gint stamp;
gint n_columns;
gint sort_column_id;
gint length;
GtkSortType order;
guint columns_dirty : 1;
gpointer default_sort_data;
gpointer seq; /* head of the list */
};
#define GTK_LIST_STORE_IS_SORTED(list) (((GtkListStore*)(list))->priv->sort_column_id != GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID)
static void gtk_list_store_tree_model_init (GtkTreeModelIface *iface);
static void gtk_list_store_drag_source_init(GtkTreeDragSourceIface *iface);
static void gtk_list_store_drag_dest_init (GtkTreeDragDestIface *iface);
static void gtk_list_store_sortable_init (GtkTreeSortableIface *iface);
static void gtk_list_store_buildable_init (GtkBuildableIface *iface);
static void gtk_list_store_finalize (GObject *object);
static GtkTreeModelFlags gtk_list_store_get_flags (GtkTreeModel *tree_model);
static gint gtk_list_store_get_n_columns (GtkTreeModel *tree_model);
static GType gtk_list_store_get_column_type (GtkTreeModel *tree_model,
gint index);
static gboolean gtk_list_store_get_iter (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreePath *path);
static GtkTreePath *gtk_list_store_get_path (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static void gtk_list_store_get_value (GtkTreeModel *tree_model,
GtkTreeIter *iter,
gint column,
GValue *value);
static gboolean gtk_list_store_iter_next (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static gboolean gtk_list_store_iter_previous (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static gboolean gtk_list_store_iter_children (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent);
static gboolean gtk_list_store_iter_has_child (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static gint gtk_list_store_iter_n_children (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static gboolean gtk_list_store_iter_nth_child (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint n);
static gboolean gtk_list_store_iter_parent (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *child);
static void gtk_list_store_set_n_columns (GtkListStore *list_store,
gint n_columns);
static void gtk_list_store_set_column_type (GtkListStore *list_store,
gint column,
GType type);
static void gtk_list_store_increment_stamp (GtkListStore *list_store);
/* Drag and Drop */
static gboolean real_gtk_list_store_row_draggable (GtkTreeDragSource *drag_source,
GtkTreePath *path);
static gboolean gtk_list_store_drag_data_delete (GtkTreeDragSource *drag_source,
GtkTreePath *path);
static GdkContentProvider *
gtk_list_store_drag_data_get (GtkTreeDragSource *drag_source,
GtkTreePath *path);
static gboolean gtk_list_store_drag_data_received (GtkTreeDragDest *drag_dest,
GtkTreePath *dest,
const GValue *value);
static gboolean gtk_list_store_row_drop_possible (GtkTreeDragDest *drag_dest,
GtkTreePath *dest_path,
const GValue *value);
/* sortable */
static void gtk_list_store_sort (GtkListStore *list_store);
static void gtk_list_store_sort_iter_changed (GtkListStore *list_store,
GtkTreeIter *iter,
gint column);
static gboolean gtk_list_store_get_sort_column_id (GtkTreeSortable *sortable,
gint *sort_column_id,
GtkSortType *order);
static void gtk_list_store_set_sort_column_id (GtkTreeSortable *sortable,
gint sort_column_id,
GtkSortType order);
static void gtk_list_store_set_sort_func (GtkTreeSortable *sortable,
gint sort_column_id,
GtkTreeIterCompareFunc func,
gpointer data,
GDestroyNotify destroy);
static void gtk_list_store_set_default_sort_func (GtkTreeSortable *sortable,
GtkTreeIterCompareFunc func,
gpointer data,
GDestroyNotify destroy);
static gboolean gtk_list_store_has_default_sort_func (GtkTreeSortable *sortable);
/* buildable */
static gboolean gtk_list_store_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GtkBuildableParser *parser,
gpointer *data);
static void gtk_list_store_buildable_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer data);
G_DEFINE_TYPE_WITH_CODE (GtkListStore, gtk_list_store, G_TYPE_OBJECT,
G_ADD_PRIVATE (GtkListStore)
G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_MODEL,
gtk_list_store_tree_model_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_DRAG_SOURCE,
gtk_list_store_drag_source_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_DRAG_DEST,
gtk_list_store_drag_dest_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_SORTABLE,
gtk_list_store_sortable_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_list_store_buildable_init))
static void
gtk_list_store_class_init (GtkListStoreClass *class)
{
GObjectClass *object_class;
object_class = (GObjectClass*) class;
object_class->finalize = gtk_list_store_finalize;
}
static void
gtk_list_store_tree_model_init (GtkTreeModelIface *iface)
{
iface->get_flags = gtk_list_store_get_flags;
iface->get_n_columns = gtk_list_store_get_n_columns;
iface->get_column_type = gtk_list_store_get_column_type;
iface->get_iter = gtk_list_store_get_iter;
iface->get_path = gtk_list_store_get_path;
iface->get_value = gtk_list_store_get_value;
iface->iter_next = gtk_list_store_iter_next;
iface->iter_previous = gtk_list_store_iter_previous;
iface->iter_children = gtk_list_store_iter_children;
iface->iter_has_child = gtk_list_store_iter_has_child;
iface->iter_n_children = gtk_list_store_iter_n_children;
iface->iter_nth_child = gtk_list_store_iter_nth_child;
iface->iter_parent = gtk_list_store_iter_parent;
}
static void
gtk_list_store_drag_source_init (GtkTreeDragSourceIface *iface)
{
iface->row_draggable = real_gtk_list_store_row_draggable;
iface->drag_data_delete = gtk_list_store_drag_data_delete;
iface->drag_data_get = gtk_list_store_drag_data_get;
}
static void
gtk_list_store_drag_dest_init (GtkTreeDragDestIface *iface)
{
iface->drag_data_received = gtk_list_store_drag_data_received;
iface->row_drop_possible = gtk_list_store_row_drop_possible;
}
static void
gtk_list_store_sortable_init (GtkTreeSortableIface *iface)
{
iface->get_sort_column_id = gtk_list_store_get_sort_column_id;
iface->set_sort_column_id = gtk_list_store_set_sort_column_id;
iface->set_sort_func = gtk_list_store_set_sort_func;
iface->set_default_sort_func = gtk_list_store_set_default_sort_func;
iface->has_default_sort_func = gtk_list_store_has_default_sort_func;
}
void
gtk_list_store_buildable_init (GtkBuildableIface *iface)
{
iface->custom_tag_start = gtk_list_store_buildable_custom_tag_start;
iface->custom_tag_end = gtk_list_store_buildable_custom_tag_end;
}
static void
gtk_list_store_init (GtkListStore *list_store)
{
GtkListStorePrivate *priv;
list_store->priv = gtk_list_store_get_instance_private (list_store);
priv = list_store->priv;
priv->seq = g_sequence_new (NULL);
priv->sort_list = NULL;
priv->stamp = g_random_int ();
priv->sort_column_id = GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID;
priv->columns_dirty = FALSE;
priv->length = 0;
}
static gboolean
iter_is_valid (GtkTreeIter *iter,
GtkListStore *list_store)
{
return iter != NULL &&
iter->user_data != NULL &&
list_store->priv->stamp == iter->stamp &&
!g_sequence_iter_is_end (iter->user_data) &&
g_sequence_iter_get_sequence (iter->user_data) == list_store->priv->seq;
}
/**
* gtk_list_store_new:
* @n_columns: number of columns in the list store
* @...: all #GType types for the columns, from first to last
*
* Creates a new list store as with @n_columns columns each of the types passed
* in. Note that only types derived from standard GObject fundamental types
* are supported.
*
* As an example, `gtk_list_store_new (3, G_TYPE_INT, G_TYPE_STRING,
* GDK_TYPE_TEXTURE);` will create a new #GtkListStore with three columns, of type
* int, string and #GdkTexture, respectively.
*
* Returns: a new #GtkListStore
*/
GtkListStore *
gtk_list_store_new (gint n_columns,
...)
{
GtkListStore *retval;
va_list args;
gint i;
g_return_val_if_fail (n_columns > 0, NULL);
retval = g_object_new (GTK_TYPE_LIST_STORE, NULL);
gtk_list_store_set_n_columns (retval, n_columns);
va_start (args, n_columns);
for (i = 0; i < n_columns; i++)
{
GType type = va_arg (args, GType);
if (! _gtk_tree_data_list_check_type (type))
{
g_warning ("%s: Invalid type %s", G_STRLOC, g_type_name (type));
g_object_unref (retval);
va_end (args);
return NULL;
}
gtk_list_store_set_column_type (retval, i, type);
}
va_end (args);
return retval;
}
/**
* gtk_list_store_newv: (rename-to gtk_list_store_new)
* @n_columns: number of columns in the list store
* @types: (array length=n_columns): an array of #GType types for the columns, from first to last
*
* Non-vararg creation function. Used primarily by language bindings.
*
* Returns: (transfer full): a new #GtkListStore
**/
GtkListStore *
gtk_list_store_newv (gint n_columns,
GType *types)
{
GtkListStore *retval;
gint i;
g_return_val_if_fail (n_columns > 0, NULL);
retval = g_object_new (GTK_TYPE_LIST_STORE, NULL);
gtk_list_store_set_n_columns (retval, n_columns);
for (i = 0; i < n_columns; i++)
{
if (! _gtk_tree_data_list_check_type (types[i]))
{
g_warning ("%s: Invalid type %s", G_STRLOC, g_type_name (types[i]));
g_object_unref (retval);
return NULL;
}
gtk_list_store_set_column_type (retval, i, types[i]);
}
return retval;
}
/**
* gtk_list_store_set_column_types:
* @list_store: A #GtkListStore
* @n_columns: Number of columns for the list store
* @types: (array length=n_columns): An array length n of #GTypes
*
* This function is meant primarily for #GObjects that inherit from #GtkListStore,
* and should only be used when constructing a new #GtkListStore. It will not
* function after a row has been added, or a method on the #GtkTreeModel
* interface is called.
**/
void
gtk_list_store_set_column_types (GtkListStore *list_store,
gint n_columns,
GType *types)
{
GtkListStorePrivate *priv;
gint i;
g_return_if_fail (GTK_IS_LIST_STORE (list_store));
priv = list_store->priv;
g_return_if_fail (priv->columns_dirty == 0);
gtk_list_store_set_n_columns (list_store, n_columns);
for (i = 0; i < n_columns; i++)
{
if (! _gtk_tree_data_list_check_type (types[i]))
{
g_warning ("%s: Invalid type %s", G_STRLOC, g_type_name (types[i]));
continue;
}
gtk_list_store_set_column_type (list_store, i, types[i]);
}
}
static void
gtk_list_store_set_n_columns (GtkListStore *list_store,
gint n_columns)
{
GtkListStorePrivate *priv = list_store->priv;
int i;
if (priv->n_columns == n_columns)
return;
priv->column_headers = g_renew (GType, priv->column_headers, n_columns);
for (i = priv->n_columns; i < n_columns; i++)
priv->column_headers[i] = G_TYPE_INVALID;
priv->n_columns = n_columns;
if (priv->sort_list)
_gtk_tree_data_list_header_free (priv->sort_list);
priv->sort_list = _gtk_tree_data_list_header_new (n_columns, priv->column_headers);
}
static void
gtk_list_store_set_column_type (GtkListStore *list_store,
gint column,
GType type)
{
GtkListStorePrivate *priv = list_store->priv;
if (!_gtk_tree_data_list_check_type (type))
{
g_warning ("%s: Invalid type %s", G_STRLOC, g_type_name (type));
return;
}
priv->column_headers[column] = type;
}
static void
gtk_list_store_finalize (GObject *object)
{
GtkListStore *list_store = GTK_LIST_STORE (object);
GtkListStorePrivate *priv = list_store->priv;
g_sequence_foreach (priv->seq,
(GFunc) _gtk_tree_data_list_free, priv->column_headers);
g_sequence_free (priv->seq);
_gtk_tree_data_list_header_free (priv->sort_list);
g_free (priv->column_headers);
if (priv->default_sort_destroy)
{
GDestroyNotify d = priv->default_sort_destroy;
priv->default_sort_destroy = NULL;
d (priv->default_sort_data);
priv->default_sort_data = NULL;
}
G_OBJECT_CLASS (gtk_list_store_parent_class)->finalize (object);
}
/* Fulfill the GtkTreeModel requirements */
static GtkTreeModelFlags
gtk_list_store_get_flags (GtkTreeModel *tree_model)
{
return GTK_TREE_MODEL_ITERS_PERSIST | GTK_TREE_MODEL_LIST_ONLY;
}
static gint
gtk_list_store_get_n_columns (GtkTreeModel *tree_model)
{
GtkListStore *list_store = GTK_LIST_STORE (tree_model);
GtkListStorePrivate *priv = list_store->priv;
priv->columns_dirty = TRUE;
return priv->n_columns;
}
static GType
gtk_list_store_get_column_type (GtkTreeModel *tree_model,
gint index)
{
GtkListStore *list_store = GTK_LIST_STORE (tree_model);
GtkListStorePrivate *priv = list_store->priv;
g_return_val_if_fail (index < priv->n_columns, G_TYPE_INVALID);
priv->columns_dirty = TRUE;
return priv->column_headers[index];
}
static gboolean
gtk_list_store_get_iter (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreePath *path)
{
GtkListStore *list_store = GTK_LIST_STORE (tree_model);
GtkListStorePrivate *priv = list_store->priv;
GSequence *seq;
gint i;
priv->columns_dirty = TRUE;
seq = priv->seq;
i = gtk_tree_path_get_indices (path)[0];
if (i >= g_sequence_get_length (seq))
{
iter->stamp = 0;
return FALSE;
}
iter->stamp = priv->stamp;
iter->user_data = g_sequence_get_iter_at_pos (seq, i);
return TRUE;
}
static GtkTreePath *
gtk_list_store_get_path (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkListStore *list_store = GTK_LIST_STORE (tree_model);
GtkListStorePrivate *priv = list_store->priv;
GtkTreePath *path;
g_return_val_if_fail (iter->stamp == priv->stamp, NULL);
if (g_sequence_iter_is_end (iter->user_data))
return NULL;
path = gtk_tree_path_new ();
gtk_tree_path_append_index (path, g_sequence_iter_get_position (iter->user_data));
return path;
}
static void
gtk_list_store_get_value (GtkTreeModel *tree_model,
GtkTreeIter *iter,
gint column,
GValue *value)
{
GtkListStore *list_store = GTK_LIST_STORE (tree_model);
GtkListStorePrivate *priv = list_store->priv;
GtkTreeDataList *list;
gint tmp_column = column;
g_return_if_fail (column < priv->n_columns);
g_return_if_fail (iter_is_valid (iter, list_store));
list = g_sequence_get (iter->user_data);
while (tmp_column-- > 0 && list)
list = list->next;
if (list == NULL)
g_value_init (value, priv->column_headers[column]);
else
_gtk_tree_data_list_node_to_value (list,
priv->column_headers[column],
value);
}
static gboolean
gtk_list_store_iter_next (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkListStore *list_store = GTK_LIST_STORE (tree_model);
GtkListStorePrivate *priv = list_store->priv;
gboolean retval;
g_return_val_if_fail (priv->stamp == iter->stamp, FALSE);
iter->user_data = g_sequence_iter_next (iter->user_data);
retval = g_sequence_iter_is_end (iter->user_data);
if (retval)
iter->stamp = 0;
return !retval;
}
static gboolean
gtk_list_store_iter_previous (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkListStore *list_store = GTK_LIST_STORE (tree_model);
GtkListStorePrivate *priv = list_store->priv;
g_return_val_if_fail (priv->stamp == iter->stamp, FALSE);
if (g_sequence_iter_is_begin (iter->user_data))
{
iter->stamp = 0;
return FALSE;
}
iter->user_data = g_sequence_iter_prev (iter->user_data);
return TRUE;
}
static gboolean
gtk_list_store_iter_children (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent)
{
GtkListStore *list_store = (GtkListStore *) tree_model;
GtkListStorePrivate *priv = list_store->priv;
/* this is a list, nodes have no children */
if (parent)
{
iter->stamp = 0;
return FALSE;
}
if (g_sequence_get_length (priv->seq) > 0)
{
iter->stamp = priv->stamp;
iter->user_data = g_sequence_get_begin_iter (priv->seq);
return TRUE;
}
else
{
iter->stamp = 0;
return FALSE;
}
}
static gboolean
gtk_list_store_iter_has_child (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
return FALSE;
}
static gint
gtk_list_store_iter_n_children (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkListStore *list_store = GTK_LIST_STORE (tree_model);
GtkListStorePrivate *priv = list_store->priv;
if (iter == NULL)
return g_sequence_get_length (priv->seq);
g_return_val_if_fail (priv->stamp == iter->stamp, -1);
return 0;
}
static gboolean
gtk_list_store_iter_nth_child (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint n)
{
GtkListStore *list_store = GTK_LIST_STORE (tree_model);
GtkListStorePrivate *priv = list_store->priv;
GSequenceIter *child;
iter->stamp = 0;
if (parent)
return FALSE;
child = g_sequence_get_iter_at_pos (priv->seq, n);
if (g_sequence_iter_is_end (child))
return FALSE;
iter->stamp = priv->stamp;
iter->user_data = child;
return TRUE;
}
static gboolean
gtk_list_store_iter_parent (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *child)
{
iter->stamp = 0;
return FALSE;
}
static gboolean
gtk_list_store_real_set_value (GtkListStore *list_store,
GtkTreeIter *iter,
gint column,
GValue *value,
gboolean sort)
{
GtkListStorePrivate *priv = list_store->priv;
GtkTreeDataList *list;
GtkTreeDataList *prev;
gint old_column = column;
GValue real_value = G_VALUE_INIT;
gboolean converted = FALSE;
gboolean retval = FALSE;
if (! g_type_is_a (G_VALUE_TYPE (value), priv->column_headers[column]))
{
if (! (g_value_type_transformable (G_VALUE_TYPE (value), priv->column_headers[column])))
{
g_warning ("%s: Unable to convert from %s to %s",
G_STRLOC,
g_type_name (G_VALUE_TYPE (value)),
g_type_name (priv->column_headers[column]));
return retval;
}
g_value_init (&real_value, priv->column_headers[column]);
if (!g_value_transform (value, &real_value))
{
g_warning ("%s: Unable to make conversion from %s to %s",
G_STRLOC,
g_type_name (G_VALUE_TYPE (value)),
g_type_name (priv->column_headers[column]));
g_value_unset (&real_value);
return retval;
}
converted = TRUE;
}
prev = list = g_sequence_get (iter->user_data);
while (list != NULL)
{
if (column == 0)
{
if (converted)
_gtk_tree_data_list_value_to_node (list, &real_value);
else
_gtk_tree_data_list_value_to_node (list, value);
retval = TRUE;
if (converted)
g_value_unset (&real_value);
if (sort && GTK_LIST_STORE_IS_SORTED (list_store))
gtk_list_store_sort_iter_changed (list_store, iter, old_column);
return retval;
}
column--;
prev = list;
list = list->next;
}
if (g_sequence_get (iter->user_data) == NULL)
{
list = _gtk_tree_data_list_alloc();
g_sequence_set (iter->user_data, list);
list->next = NULL;
}
else
{
list = prev->next = _gtk_tree_data_list_alloc ();
list->next = NULL;
}
while (column != 0)
{
list->next = _gtk_tree_data_list_alloc ();
list = list->next;
list->next = NULL;
column --;
}
if (converted)
_gtk_tree_data_list_value_to_node (list, &real_value);
else
_gtk_tree_data_list_value_to_node (list, value);
retval = TRUE;
if (converted)
g_value_unset (&real_value);
if (sort && GTK_LIST_STORE_IS_SORTED (list_store))
gtk_list_store_sort_iter_changed (list_store, iter, old_column);
return retval;
}
/**
* gtk_list_store_set_value:
* @list_store: A #GtkListStore
* @iter: A valid #GtkTreeIter for the row being modified
* @column: column number to modify
* @value: new value for the cell
*
* Sets the data in the cell specified by @iter and @column.
* The type of @value must be convertible to the type of the
* column.
*
**/
void
gtk_list_store_set_value (GtkListStore *list_store,
GtkTreeIter *iter,
gint column,
GValue *value)
{
GtkListStorePrivate *priv;
g_return_if_fail (GTK_IS_LIST_STORE (list_store));
g_return_if_fail (iter_is_valid (iter, list_store));
g_return_if_fail (G_IS_VALUE (value));
priv = list_store->priv;
g_return_if_fail (column >= 0 && column < priv->n_columns);
if (gtk_list_store_real_set_value (list_store, iter, column, value, TRUE))
{
GtkTreePath *path;
path = gtk_list_store_get_path (GTK_TREE_MODEL (list_store), iter);
gtk_tree_model_row_changed (GTK_TREE_MODEL (list_store), path, iter);
gtk_tree_path_free (path);
}
}
static GtkTreeIterCompareFunc
gtk_list_store_get_compare_func (GtkListStore *list_store)
{
GtkListStorePrivate *priv = list_store->priv;
GtkTreeIterCompareFunc func = NULL;
if (GTK_LIST_STORE_IS_SORTED (list_store))
{
if (priv->sort_column_id != -1)
{
GtkTreeDataSortHeader *header;
header = _gtk_tree_data_list_get_header (priv->sort_list,
priv->sort_column_id);
g_return_val_if_fail (header != NULL, NULL);
g_return_val_if_fail (header->func != NULL, NULL);
func = header->func;
}
else
{
func = priv->default_sort_func;
}
}
return func;
}
static void
gtk_list_store_set_vector_internal (GtkListStore *list_store,
GtkTreeIter *iter,
gboolean *emit_signal,
gboolean *maybe_need_sort,
gint *columns,
GValue *values,
gint n_values)
{
GtkListStorePrivate *priv = list_store->priv;
gint i;
GtkTreeIterCompareFunc func = NULL;
func = gtk_list_store_get_compare_func (list_store);
if (func != _gtk_tree_data_list_compare_func)
*maybe_need_sort = TRUE;
for (i = 0; i < n_values; i++)
{
*emit_signal = gtk_list_store_real_set_value (list_store,
iter,
columns[i],
&values[i],
FALSE) || *emit_signal;
if (func == _gtk_tree_data_list_compare_func &&
columns[i] == priv->sort_column_id)
*maybe_need_sort = TRUE;
}
}
static void
gtk_list_store_set_valist_internal (GtkListStore *list_store,
GtkTreeIter *iter,
gboolean *emit_signal,
gboolean *maybe_need_sort,
va_list var_args)
{
GtkListStorePrivate *priv = list_store->priv;
gint column;
GtkTreeIterCompareFunc func = NULL;
column = va_arg (var_args, gint);
func = gtk_list_store_get_compare_func (list_store);
if (func != _gtk_tree_data_list_compare_func)
*maybe_need_sort = TRUE;
while (column != -1)
{
GValue value = G_VALUE_INIT;
gchar *error = NULL;
if (column < 0 || column >= priv->n_columns)
{
g_warning ("%s: Invalid column number %d added to iter (remember to end your list of columns with a -1)", G_STRLOC, column);
break;
}
G_VALUE_COLLECT_INIT (&value, priv->column_headers[column],
var_args, 0, &error);
if (error)
{
g_warning ("%s: %s", G_STRLOC, error);
g_free (error);
/* we purposely leak the value here, it might not be
* in a sane state if an error condition occoured
*/
break;
}
/* FIXME: instead of calling this n times, refactor with above */
*emit_signal = gtk_list_store_real_set_value (list_store,
iter,
column,
&value,
FALSE) || *emit_signal;
if (func == _gtk_tree_data_list_compare_func &&
column == priv->sort_column_id)
*maybe_need_sort = TRUE;
g_value_unset (&value);
column = va_arg (var_args, gint);
}
}
/**
* gtk_list_store_set_valuesv: (rename-to gtk_list_store_set)
* @list_store: A #GtkListStore
* @iter: A valid #GtkTreeIter for the row being modified
* @columns: (array length=n_values): an array of column numbers
* @values: (array length=n_values): an array of GValues
* @n_values: the length of the @columns and @values arrays
*
* A variant of gtk_list_store_set_valist() which
* takes the columns and values as two arrays, instead of
* varargs. This function is mainly intended for
* language-bindings and in case the number of columns to
* change is not known until run-time.
*/
void
gtk_list_store_set_valuesv (GtkListStore *list_store,
GtkTreeIter *iter,
gint *columns,
GValue *values,
gint n_values)
{
GtkListStorePrivate *priv;
gboolean emit_signal = FALSE;
gboolean maybe_need_sort = FALSE;
g_return_if_fail (GTK_IS_LIST_STORE (list_store));
g_return_if_fail (iter_is_valid (iter, list_store));
priv = list_store->priv;
gtk_list_store_set_vector_internal (list_store, iter,
&emit_signal,
&maybe_need_sort,
columns, values, n_values);
if (maybe_need_sort && GTK_LIST_STORE_IS_SORTED (list_store))
gtk_list_store_sort_iter_changed (list_store, iter, priv->sort_column_id);
if (emit_signal)
{
GtkTreePath *path;
path = gtk_list_store_get_path (GTK_TREE_MODEL (list_store), iter);
gtk_tree_model_row_changed (GTK_TREE_MODEL (list_store), path, iter);
gtk_tree_path_free (path);
}
}
/**
* gtk_list_store_set_valist:
* @list_store: A #GtkListStore
* @iter: A valid #GtkTreeIter for the row being modified
* @var_args: va_list of column/value pairs
*
* See gtk_list_store_set(); this version takes a va_list for use by language
* bindings.
*
**/
void
gtk_list_store_set_valist (GtkListStore *list_store,
GtkTreeIter *iter,
va_list var_args)
{
GtkListStorePrivate *priv;
gboolean emit_signal = FALSE;
gboolean maybe_need_sort = FALSE;
g_return_if_fail (GTK_IS_LIST_STORE (list_store));
g_return_if_fail (iter_is_valid (iter, list_store));
priv = list_store->priv;
gtk_list_store_set_valist_internal (list_store, iter,
&emit_signal,
&maybe_need_sort,
var_args);
if (maybe_need_sort && GTK_LIST_STORE_IS_SORTED (list_store))
gtk_list_store_sort_iter_changed (list_store, iter, priv->sort_column_id);
if (emit_signal)
{
GtkTreePath *path;
path = gtk_list_store_get_path (GTK_TREE_MODEL (list_store), iter);
gtk_tree_model_row_changed (GTK_TREE_MODEL (list_store), path, iter);
gtk_tree_path_free (path);
}
}
/**
* gtk_list_store_set:
* @list_store: a #GtkListStore
* @iter: row iterator
* @...: pairs of column number and value, terminated with -1
*
* Sets 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 the value to be set.
* The list is terminated by a -1. For example, to set column 0 with type
* %G_TYPE_STRING to “Foo”, you would write `gtk_list_store_set (store, iter,
* 0, "Foo", -1)`.
*
* The value will be referenced by the store if it is a %G_TYPE_OBJECT, and it
* will be copied if it is a %G_TYPE_STRING or %G_TYPE_BOXED.
*/
void
gtk_list_store_set (GtkListStore *list_store,
GtkTreeIter *iter,
...)
{
va_list var_args;
va_start (var_args, iter);
gtk_list_store_set_valist (list_store, iter, var_args);
va_end (var_args);
}
/**
* gtk_list_store_remove:
* @list_store: A #GtkListStore
* @iter: A valid #GtkTreeIter
*
* Removes the given row from the list store. After being removed,
* @iter is set to be the next valid row, or invalidated if it pointed
* to the last row in @list_store.
*
* Returns: %TRUE if @iter is valid, %FALSE if not.
**/
gboolean
gtk_list_store_remove (GtkListStore *list_store,
GtkTreeIter *iter)
{
GtkListStorePrivate *priv;
GtkTreePath *path;
GSequenceIter *ptr, *next;
g_return_val_if_fail (GTK_IS_LIST_STORE (list_store), FALSE);
g_return_val_if_fail (iter_is_valid (iter, list_store), FALSE);
priv = list_store->priv;
path = gtk_list_store_get_path (GTK_TREE_MODEL (list_store), iter);
ptr = iter->user_data;
next = g_sequence_iter_next (ptr);
_gtk_tree_data_list_free (g_sequence_get (ptr), priv->column_headers);
g_sequence_remove (iter->user_data);
priv->length--;
gtk_tree_model_row_deleted (GTK_TREE_MODEL (list_store), path);
gtk_tree_path_free (path);
if (g_sequence_iter_is_end (next))
{
iter->stamp = 0;
return FALSE;
}
else
{
iter->stamp = priv->stamp;
iter->user_data = next;
return TRUE;
}
}
/**
* gtk_list_store_insert:
* @list_store: A #GtkListStore
* @iter: (out): An unset #GtkTreeIter to set to the new row
* @position: position to insert the new row, or -1 for last
*
* Creates a new row at @position. @iter will be changed to point to this new
* row. If @position is -1 or is larger than the number of rows on the list,
* then the new row will be appended to the list. The row will be empty after
* this function is called. To fill in values, you need to call
* gtk_list_store_set() or gtk_list_store_set_value().
*
**/
void
gtk_list_store_insert (GtkListStore *list_store,
GtkTreeIter *iter,
gint position)
{
GtkListStorePrivate *priv;
GtkTreePath *path;
GSequence *seq;
GSequenceIter *ptr;
gint length;
g_return_if_fail (GTK_IS_LIST_STORE (list_store));
g_return_if_fail (iter != NULL);
priv = list_store->priv;
priv->columns_dirty = TRUE;
seq = priv->seq;
length = g_sequence_get_length (seq);
if (position > length || position < 0)
position = length;
ptr = g_sequence_get_iter_at_pos (seq, position);
ptr = g_sequence_insert_before (ptr, NULL);
iter->stamp = priv->stamp;
iter->user_data = ptr;
g_assert (iter_is_valid (iter, list_store));
priv->length++;
path = gtk_tree_path_new ();
gtk_tree_path_append_index (path, position);
gtk_tree_model_row_inserted (GTK_TREE_MODEL (list_store), path, iter);
gtk_tree_path_free (path);
}
/**
* gtk_list_store_insert_before:
* @list_store: A #GtkListStore
* @iter: (out): An unset #GtkTreeIter to set to the new row
* @sibling: (allow-none): A valid #GtkTreeIter, or %NULL
*
* Inserts a new row before @sibling. If @sibling is %NULL, then the row will
* be appended to the end of the list. @iter will be changed to point to this
* new row. The row will be empty after this function is called. To fill in
* values, you need to call gtk_list_store_set() or gtk_list_store_set_value().
*
**/
void
gtk_list_store_insert_before (GtkListStore *list_store,
GtkTreeIter *iter,
GtkTreeIter *sibling)
{
GtkListStorePrivate *priv;
GSequenceIter *after;
g_return_if_fail (GTK_IS_LIST_STORE (list_store));
g_return_if_fail (iter != NULL);
priv = list_store->priv;
if (sibling)
g_return_if_fail (iter_is_valid (sibling, list_store));
if (!sibling)
after = g_sequence_get_end_iter (priv->seq);
else
after = sibling->user_data;
gtk_list_store_insert (list_store, iter, g_sequence_iter_get_position (after));
}
/**
* gtk_list_store_insert_after:
* @list_store: A #GtkListStore
* @iter: (out): An unset #GtkTreeIter to set to the new row
* @sibling: (allow-none): A valid #GtkTreeIter, or %NULL
*
* Inserts a new row after @sibling. If @sibling is %NULL, then the row will be
* prepended to the beginning of the list. @iter will be changed to point to
* this new row. The row will be empty after this function is called. To fill
* in values, you need to call gtk_list_store_set() or gtk_list_store_set_value().
*
**/
void
gtk_list_store_insert_after (GtkListStore *list_store,
GtkTreeIter *iter,
GtkTreeIter *sibling)
{
GtkListStorePrivate *priv;
GSequenceIter *after;
g_return_if_fail (GTK_IS_LIST_STORE (list_store));
g_return_if_fail (iter != NULL);
priv = list_store->priv;
if (sibling)
g_return_if_fail (iter_is_valid (sibling, list_store));
if (!sibling)
after = g_sequence_get_begin_iter (priv->seq);
else
after = g_sequence_iter_next (sibling->user_data);
gtk_list_store_insert (list_store, iter, g_sequence_iter_get_position (after));
}
/**
* gtk_list_store_prepend:
* @list_store: A #GtkListStore
* @iter: (out): An unset #GtkTreeIter to set to the prepend row
*
* Prepends a new row to @list_store. @iter will be changed to point to this new
* row. The row will be empty after this function is called. To fill in
* values, you need to call gtk_list_store_set() or gtk_list_store_set_value().
*
**/
void
gtk_list_store_prepend (GtkListStore *list_store,
GtkTreeIter *iter)
{
g_return_if_fail (GTK_IS_LIST_STORE (list_store));
g_return_if_fail (iter != NULL);
gtk_list_store_insert (list_store, iter, 0);
}
/**
* gtk_list_store_append:
* @list_store: A #GtkListStore
* @iter: (out): An unset #GtkTreeIter to set to the appended row
*
* Appends a new row to @list_store. @iter will be changed to point to this new
* row. The row will be empty after this function is called. To fill in
* values, you need to call gtk_list_store_set() or gtk_list_store_set_value().
*
**/
void
gtk_list_store_append (GtkListStore *list_store,
GtkTreeIter *iter)
{
g_return_if_fail (GTK_IS_LIST_STORE (list_store));
g_return_if_fail (iter != NULL);
gtk_list_store_insert (list_store, iter, -1);
}
static void
gtk_list_store_increment_stamp (GtkListStore *list_store)
{
GtkListStorePrivate *priv = list_store->priv;
do
{
priv->stamp++;
}
while (priv->stamp == 0);
}
/**
* gtk_list_store_clear:
* @list_store: a #GtkListStore.
*
* Removes all rows from the list store.
*
**/
void
gtk_list_store_clear (GtkListStore *list_store)
{
GtkListStorePrivate *priv;
GtkTreeIter iter;
g_return_if_fail (GTK_IS_LIST_STORE (list_store));
priv = list_store->priv;
while (g_sequence_get_length (priv->seq) > 0)
{
iter.stamp = priv->stamp;
iter.user_data = g_sequence_get_begin_iter (priv->seq);
gtk_list_store_remove (list_store, &iter);
}
gtk_list_store_increment_stamp (list_store);
}
/**
* gtk_list_store_iter_is_valid:
* @list_store: A #GtkListStore.
* @iter: A #GtkTreeIter.
*
* > This function is slow. Only use it for debugging and/or testing
* > purposes.
*
* Checks if the given iter is a valid iter for this #GtkListStore.
*
* Returns: %TRUE if the iter is valid, %FALSE if the iter is invalid.
**/
gboolean
gtk_list_store_iter_is_valid (GtkListStore *list_store,
GtkTreeIter *iter)
{
GtkListStorePrivate *priv;
GSequenceIter *seq_iter;
g_return_val_if_fail (GTK_IS_LIST_STORE (list_store), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
/* can't use iter_is_valid() here, because iter might point
* to random memory.
*
* We MUST NOT dereference it.
*/
priv = list_store->priv;
if (iter == NULL ||
iter->user_data == NULL ||
priv->stamp != iter->stamp)
return FALSE;
for (seq_iter = g_sequence_get_begin_iter (priv->seq);
!g_sequence_iter_is_end (seq_iter);
seq_iter = g_sequence_iter_next (seq_iter))
{
if (seq_iter == iter->user_data)
return TRUE;
}
return FALSE;
}
static gboolean real_gtk_list_store_row_draggable (GtkTreeDragSource *drag_source,
GtkTreePath *path)
{
return TRUE;
}
static gboolean
gtk_list_store_drag_data_delete (GtkTreeDragSource *drag_source,
GtkTreePath *path)
{
GtkTreeIter iter;
if (gtk_list_store_get_iter (GTK_TREE_MODEL (drag_source),
&iter,
path))
{
gtk_list_store_remove (GTK_LIST_STORE (drag_source), &iter);
return TRUE;
}
return FALSE;
}
static GdkContentProvider *
gtk_list_store_drag_data_get (GtkTreeDragSource *drag_source,
GtkTreePath *path)
{
/* Note that we don't need to handle the GTK_TREE_MODEL_ROW
* target, because the default handler does it for us, but
* we do anyway for the convenience of someone maybe overriding the
* default handler.
*/
return gtk_tree_create_row_drag_content (GTK_TREE_MODEL (drag_source), path);
}
static gboolean
gtk_list_store_drag_data_received (GtkTreeDragDest *drag_dest,
GtkTreePath *dest,
const GValue *value)
{
GtkTreeModel *tree_model = GTK_TREE_MODEL (drag_dest);
GtkListStore *list_store = GTK_LIST_STORE (tree_model);
GtkListStorePrivate *priv = list_store->priv;
GtkTreeModel *src_model = NULL;
GtkTreePath *src_path = NULL;
gboolean retval = FALSE;
if (gtk_tree_get_row_drag_data (value,
&src_model,
&src_path) &&
src_model == tree_model)
{
/* Copy the given row to a new position */
GtkTreeIter src_iter;
GtkTreeIter dest_iter;
GtkTreePath *prev;
if (!gtk_list_store_get_iter (src_model,
&src_iter,
src_path))
{
goto out;
}
/* Get the path to insert _after_ (dest is the path to insert _before_) */
prev = gtk_tree_path_copy (dest);
if (!gtk_tree_path_prev (prev))
{
/* dest was the first spot in the list; which means we are supposed
* to prepend.
*/
gtk_list_store_prepend (list_store, &dest_iter);
retval = TRUE;
}
else
{
if (gtk_list_store_get_iter (tree_model, &dest_iter, prev))
{
GtkTreeIter tmp_iter = dest_iter;
gtk_list_store_insert_after (list_store, &dest_iter, &tmp_iter);
retval = TRUE;
}
}
gtk_tree_path_free (prev);
/* If we succeeded in creating dest_iter, copy data from src
*/
if (retval)
{
GtkTreeDataList *dl = g_sequence_get (src_iter.user_data);
GtkTreeDataList *copy_head = NULL;
GtkTreeDataList *copy_prev = NULL;
GtkTreeDataList *copy_iter = NULL;
GtkTreePath *path;
gint col;
col = 0;
while (dl)
{
copy_iter = _gtk_tree_data_list_node_copy (dl,
priv->column_headers[col]);
if (copy_head == NULL)
copy_head = copy_iter;
if (copy_prev)
copy_prev->next = copy_iter;
copy_prev = copy_iter;
dl = dl->next;
++col;
}
dest_iter.stamp = priv->stamp;
g_sequence_set (dest_iter.user_data, copy_head);
path = gtk_list_store_get_path (tree_model, &dest_iter);
gtk_tree_model_row_changed (tree_model, path, &dest_iter);
gtk_tree_path_free (path);
}
}
else
{
/* FIXME maybe add some data targets eventually, or handle text
* targets in the simple case.
*/
}
out:
if (src_path)
gtk_tree_path_free (src_path);
return retval;
}
static gboolean
gtk_list_store_row_drop_possible (GtkTreeDragDest *drag_dest,
GtkTreePath *dest_path,
const GValue *value)
{
gint *indices;
GtkTreeModel *src_model = NULL;
GtkTreePath *src_path = NULL;
gboolean retval = FALSE;
/* don't accept drops if the list has been sorted */
if (GTK_LIST_STORE_IS_SORTED (drag_dest))
return FALSE;
if (!gtk_tree_get_row_drag_data (value,
&src_model,
&src_path))
goto out;
if (src_model != GTK_TREE_MODEL (drag_dest))
goto out;
if (gtk_tree_path_get_depth (dest_path) != 1)
goto out;
/* can drop before any existing node, or before one past any existing. */
indices = gtk_tree_path_get_indices (dest_path);
if (indices[0] <= g_sequence_get_length (GTK_LIST_STORE (drag_dest)->priv->seq))
retval = TRUE;
out:
if (src_path)
gtk_tree_path_free (src_path);
return retval;
}
/* Sorting and reordering */
/* Reordering */
static gint
gtk_list_store_reorder_func (GSequenceIter *a,
GSequenceIter *b,
gpointer user_data)
{
GHashTable *new_positions = user_data;
gint apos = GPOINTER_TO_INT (g_hash_table_lookup (new_positions, a));
gint bpos = GPOINTER_TO_INT (g_hash_table_lookup (new_positions, b));
if (apos < bpos)
return -1;
if (apos > bpos)
return 1;
return 0;
}
/**
* gtk_list_store_reorder:
* @store: A #GtkListStore.
* @new_order: (array zero-terminated=1): an array of integers mapping the new
* position of each child to its old position before the re-ordering,
* i.e. @new_order`[newpos] = oldpos`. It must have
* exactly as many items as the list store’s length.
*
* Reorders @store to follow the order indicated by @new_order. Note that
* this function only works with unsorted stores.
**/
void
gtk_list_store_reorder (GtkListStore *store,
gint *new_order)
{
GtkListStorePrivate *priv;
gint i;
GtkTreePath *path;
GHashTable *new_positions;
GSequenceIter *ptr;
gint *order;
g_return_if_fail (GTK_IS_LIST_STORE (store));
g_return_if_fail (!GTK_LIST_STORE_IS_SORTED (store));
g_return_if_fail (new_order != NULL);
priv = store->priv;
order = g_new (gint, g_sequence_get_length (priv->seq));
for (i = 0; i < g_sequence_get_length (priv->seq); i++)
order[new_order[i]] = i;
new_positions = g_hash_table_new (g_direct_hash, g_direct_equal);
ptr = g_sequence_get_begin_iter (priv->seq);
i = 0;
while (!g_sequence_iter_is_end (ptr))
{
g_hash_table_insert (new_positions, ptr, GINT_TO_POINTER (order[i++]));
ptr = g_sequence_iter_next (ptr);
}
g_free (order);
g_sequence_sort_iter (priv->seq, gtk_list_store_reorder_func, new_positions);
g_hash_table_destroy (new_positions);
/* emit signal */
path = gtk_tree_path_new ();
gtk_tree_model_rows_reordered (GTK_TREE_MODEL (store),
path, NULL, new_order);
gtk_tree_path_free (path);
}
static GHashTable *
save_positions (GSequence *seq)
{
GHashTable *positions = g_hash_table_new (g_direct_hash, g_direct_equal);
GSequenceIter *ptr;
ptr = g_sequence_get_begin_iter (seq);
while (!g_sequence_iter_is_end (ptr))
{
g_hash_table_insert (positions, ptr,
GINT_TO_POINTER (g_sequence_iter_get_position (ptr)));
ptr = g_sequence_iter_next (ptr);
}
return positions;
}
static int *
generate_order (GSequence *seq,
GHashTable *old_positions)
{
GSequenceIter *ptr;
int *order = g_new (int, g_sequence_get_length (seq));
int i;
i = 0;
ptr = g_sequence_get_begin_iter (seq);
while (!g_sequence_iter_is_end (ptr))
{
int old_pos = GPOINTER_TO_INT (g_hash_table_lookup (old_positions, ptr));
order[i++] = old_pos;
ptr = g_sequence_iter_next (ptr);
}
g_hash_table_destroy (old_positions);
return order;
}
/**
* gtk_list_store_swap:
* @store: A #GtkListStore.
* @a: A #GtkTreeIter.
* @b: Another #GtkTreeIter.
*
* Swaps @a and @b in @store. Note that this function only works with
* unsorted stores.
**/
void
gtk_list_store_swap (GtkListStore *store,
GtkTreeIter *a,
GtkTreeIter *b)
{
GtkListStorePrivate *priv;
GHashTable *old_positions;
gint *order;
GtkTreePath *path;
g_return_if_fail (GTK_IS_LIST_STORE (store));
g_return_if_fail (!GTK_LIST_STORE_IS_SORTED (store));
g_return_if_fail (iter_is_valid (a, store));
g_return_if_fail (iter_is_valid (b, store));
priv = store->priv;
if (a->user_data == b->user_data)
return;
old_positions = save_positions (priv->seq);
g_sequence_swap (a->user_data, b->user_data);
order = generate_order (priv->seq, old_positions);
path = gtk_tree_path_new ();
gtk_tree_model_rows_reordered (GTK_TREE_MODEL (store),
path, NULL, order);
gtk_tree_path_free (path);
g_free (order);
}
static void
gtk_list_store_move_to (GtkListStore *store,
GtkTreeIter *iter,
gint new_pos)
{
GtkListStorePrivate *priv = store->priv;
GHashTable *old_positions;
GtkTreePath *path;
gint *order;
old_positions = save_positions (priv->seq);
g_sequence_move (iter->user_data, g_sequence_get_iter_at_pos (priv->seq, new_pos));
order = generate_order (priv->seq, old_positions);
path = gtk_tree_path_new ();
gtk_tree_model_rows_reordered (GTK_TREE_MODEL (store),
path, NULL, order);
gtk_tree_path_free (path);
g_free (order);
}
/**
* gtk_list_store_move_before:
* @store: A #GtkListStore.
* @iter: A #GtkTreeIter.
* @position: (allow-none): A #GtkTreeIter, or %NULL.
*
* Moves @iter in @store to the position before @position. Note that this
* function only works with unsorted stores. If @position is %NULL, @iter
* will be moved to the end of the list.
**/
void
gtk_list_store_move_before (GtkListStore *store,
GtkTreeIter *iter,
GtkTreeIter *position)
{
gint pos;
g_return_if_fail (GTK_IS_LIST_STORE (store));
g_return_if_fail (!GTK_LIST_STORE_IS_SORTED (store));
g_return_if_fail (iter_is_valid (iter, store));
if (position)
g_return_if_fail (iter_is_valid (position, store));
if (position)
pos = g_sequence_iter_get_position (position->user_data);
else
pos = -1;
gtk_list_store_move_to (store, iter, pos);
}
/**
* gtk_list_store_move_after:
* @store: A #GtkListStore.
* @iter: A #GtkTreeIter.
* @position: (allow-none): A #GtkTreeIter or %NULL.
*
* Moves @iter in @store to the position after @position. Note that this
* function only works with unsorted stores. If @position is %NULL, @iter
* will be moved to the start of the list.
**/
void
gtk_list_store_move_after (GtkListStore *store,
GtkTreeIter *iter,
GtkTreeIter *position)
{
gint pos;
g_return_if_fail (GTK_IS_LIST_STORE (store));
g_return_if_fail (!GTK_LIST_STORE_IS_SORTED (store));
g_return_if_fail (iter_is_valid (iter, store));
if (position)
g_return_if_fail (iter_is_valid (position, store));
if (position)
pos = g_sequence_iter_get_position (position->user_data) + 1;
else
pos = 0;
gtk_list_store_move_to (store, iter, pos);
}
/* Sorting */
static gint
gtk_list_store_compare_func (GSequenceIter *a,
GSequenceIter *b,
gpointer user_data)
{
GtkListStore *list_store = user_data;
GtkListStorePrivate *priv = list_store->priv;
GtkTreeIter iter_a;
GtkTreeIter iter_b;
gint retval;
GtkTreeIterCompareFunc func;
gpointer data;
if (priv->sort_column_id != -1)
{
GtkTreeDataSortHeader *header;
header = _gtk_tree_data_list_get_header (priv->sort_list,
priv->sort_column_id);
g_return_val_if_fail (header != NULL, 0);
g_return_val_if_fail (header->func != NULL, 0);
func = header->func;
data = header->data;
}
else
{
g_return_val_if_fail (priv->default_sort_func != NULL, 0);
func = priv->default_sort_func;
data = priv->default_sort_data;
}
iter_a.stamp = priv->stamp;
iter_a.user_data = (gpointer)a;
iter_b.stamp = priv->stamp;
iter_b.user_data = (gpointer)b;
g_assert (iter_is_valid (&iter_a, list_store));
g_assert (iter_is_valid (&iter_b, list_store));
retval = (* func) (GTK_TREE_MODEL (list_store), &iter_a, &iter_b, data);
if (priv->order == GTK_SORT_DESCENDING)
{
if (retval > 0)
retval = -1;
else if (retval < 0)
retval = 1;
}
return retval;
}
static void
gtk_list_store_sort (GtkListStore *list_store)
{
GtkListStorePrivate *priv = list_store->priv;
gint *new_order;
GtkTreePath *path;
GHashTable *old_positions;
if (!GTK_LIST_STORE_IS_SORTED (list_store) ||
g_sequence_get_length (priv->seq) <= 1)
return;
old_positions = save_positions (priv->seq);
g_sequence_sort_iter (priv->seq, gtk_list_store_compare_func, list_store);
/* Let the world know about our new order */
new_order = generate_order (priv->seq, old_positions);
path = gtk_tree_path_new ();
gtk_tree_model_rows_reordered (GTK_TREE_MODEL (list_store),
path, NULL, new_order);
gtk_tree_path_free (path);
g_free (new_order);
}
static gboolean
iter_is_sorted (GtkListStore *list_store,
GtkTreeIter *iter)
{
GSequenceIter *cmp;
if (!g_sequence_iter_is_begin (iter->user_data))
{
cmp = g_sequence_iter_prev (iter->user_data);
if (gtk_list_store_compare_func (cmp, iter->user_data, list_store) > 0)
return FALSE;
}
cmp = g_sequence_iter_next (iter->user_data);
if (!g_sequence_iter_is_end (cmp))
{
if (gtk_list_store_compare_func (iter->user_data, cmp, list_store) > 0)
return FALSE;
}
return TRUE;
}
static void
gtk_list_store_sort_iter_changed (GtkListStore *list_store,
GtkTreeIter *iter,
gint column)
{
GtkListStorePrivate *priv = list_store->priv;
GtkTreePath *path;
path = gtk_list_store_get_path (GTK_TREE_MODEL (list_store), iter);
gtk_tree_model_row_changed (GTK_TREE_MODEL (list_store), path, iter);
gtk_tree_path_free (path);
if (!iter_is_sorted (list_store, iter))
{
GHashTable *old_positions;
gint *order;
old_positions = save_positions (priv->seq);
g_sequence_sort_changed_iter (iter->user_data,
gtk_list_store_compare_func,
list_store);
order = generate_order (priv->seq, old_positions);
path = gtk_tree_path_new ();
gtk_tree_model_rows_reordered (GTK_TREE_MODEL (list_store),
path, NULL, order);
gtk_tree_path_free (path);
g_free (order);
}
}
static gboolean
gtk_list_store_get_sort_column_id (GtkTreeSortable *sortable,
gint *sort_column_id,
GtkSortType *order)
{
GtkListStore *list_store = GTK_LIST_STORE (sortable);
GtkListStorePrivate *priv = list_store->priv;
if (sort_column_id)
* sort_column_id = priv->sort_column_id;
if (order)
* order = priv->order;
if (priv->sort_column_id == GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID ||
priv->sort_column_id == GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID)
return FALSE;
return TRUE;
}
static void
gtk_list_store_set_sort_column_id (GtkTreeSortable *sortable,
gint sort_column_id,
GtkSortType order)
{
GtkListStore *list_store = GTK_LIST_STORE (sortable);
GtkListStorePrivate *priv = list_store->priv;
if ((priv->sort_column_id == sort_column_id) &&
(priv->order == order))
return;
if (sort_column_id != GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID)
{
if (sort_column_id != GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID)
{
GtkTreeDataSortHeader *header = NULL;
header = _gtk_tree_data_list_get_header (priv->sort_list,
sort_column_id);
/* We want to make sure that we have a function */
g_return_if_fail (header != NULL);
g_return_if_fail (header->func != NULL);
}
else
{
g_return_if_fail (priv->default_sort_func != NULL);
}
}
priv->sort_column_id = sort_column_id;
priv->order = order;
gtk_tree_sortable_sort_column_changed (sortable);
gtk_list_store_sort (list_store);
}
static void
gtk_list_store_set_sort_func (GtkTreeSortable *sortable,
gint sort_column_id,
GtkTreeIterCompareFunc func,
gpointer data,
GDestroyNotify destroy)
{
GtkListStore *list_store = GTK_LIST_STORE (sortable);
GtkListStorePrivate *priv = list_store->priv;
priv->sort_list = _gtk_tree_data_list_set_header (priv->sort_list,
sort_column_id,
func, data, destroy);
if (priv->sort_column_id == sort_column_id)
gtk_list_store_sort (list_store);
}
static void
gtk_list_store_set_default_sort_func (GtkTreeSortable *sortable,
GtkTreeIterCompareFunc func,
gpointer data,
GDestroyNotify destroy)
{
GtkListStore *list_store = GTK_LIST_STORE (sortable);
GtkListStorePrivate *priv = list_store->priv;
if (priv->default_sort_destroy)
{
GDestroyNotify d = priv->default_sort_destroy;
priv->default_sort_destroy = NULL;
d (priv->default_sort_data);
}
priv->default_sort_func = func;
priv->default_sort_data = data;
priv->default_sort_destroy = destroy;
if (priv->sort_column_id == GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID)
gtk_list_store_sort (list_store);
}
static gboolean
gtk_list_store_has_default_sort_func (GtkTreeSortable *sortable)
{
GtkListStore *list_store = GTK_LIST_STORE (sortable);
GtkListStorePrivate *priv = list_store->priv;
return (priv->default_sort_func != NULL);
}
/**
* gtk_list_store_insert_with_values:
* @list_store: A #GtkListStore
* @iter: (out) (allow-none): An unset #GtkTreeIter to set to the new row, or %NULL
* @position: position to insert the new row, or -1 to append after existing
* rows
* @...: pairs of column number and value, terminated with -1
*
* Creates a new row at @position. @iter will be changed to point to this new
* row. If @position is -1, or larger than the number of rows in the list, then
* the new row will be appended to the list. The row will be filled with the
* values given to this function.
*
* Calling
* `gtk_list_store_insert_with_values (list_store, iter, position...)`
* has the same effect as calling
* |[<!-- language="C" -->
* static void
* insert_value (GtkListStore *list_store,
* GtkTreeIter *iter,
* int position)
* {
* gtk_list_store_insert (list_store, iter, position);
* gtk_list_store_set (list_store,
* iter
* // ...
* );
* }
* ]|
* with the difference that the former will only emit a row_inserted signal,
* while the latter will emit row_inserted, row_changed and, if the list store
* is sorted, rows_reordered. Since emitting the rows_reordered signal
* repeatedly can affect the performance of the program,
* gtk_list_store_insert_with_values() should generally be preferred when
* inserting rows in a sorted list store.
*/
void
gtk_list_store_insert_with_values (GtkListStore *list_store,
GtkTreeIter *iter,
gint position,
...)
{
GtkListStorePrivate *priv;
GtkTreePath *path;
GSequence *seq;
GSequenceIter *ptr;
GtkTreeIter tmp_iter;
gint length;
gboolean changed = FALSE;
gboolean maybe_need_sort = FALSE;
va_list var_args;
/* FIXME: refactor to reduce overlap with gtk_list_store_set() */
g_return_if_fail (GTK_IS_LIST_STORE (list_store));
priv = list_store->priv;
if (!iter)
iter = &tmp_iter;
priv->columns_dirty = TRUE;
seq = priv->seq;
length = g_sequence_get_length (seq);
if (position > length || position < 0)
position = length;
ptr = g_sequence_get_iter_at_pos (seq, position);
ptr = g_sequence_insert_before (ptr, NULL);
iter->stamp = priv->stamp;
iter->user_data = ptr;
g_assert (iter_is_valid (iter, list_store));
priv->length++;
va_start (var_args, position);
gtk_list_store_set_valist_internal (list_store, iter,
&changed, &maybe_need_sort,
var_args);
va_end (var_args);
/* Don't emit rows_reordered here */
if (maybe_need_sort && GTK_LIST_STORE_IS_SORTED (list_store))
g_sequence_sort_changed_iter (iter->user_data,
gtk_list_store_compare_func,
list_store);
/* Just emit row_inserted */
path = gtk_list_store_get_path (GTK_TREE_MODEL (list_store), iter);
gtk_tree_model_row_inserted (GTK_TREE_MODEL (list_store), path, iter);
gtk_tree_path_free (path);
}
/**
* gtk_list_store_insert_with_valuesv:
* @list_store: A #GtkListStore
* @iter: (out) (allow-none): An unset #GtkTreeIter to set to the new row, or %NULL.
* @position: position to insert the new row, or -1 for last
* @columns: (array length=n_values): an array of column numbers
* @values: (array length=n_values): an array of GValues
* @n_values: the length of the @columns and @values arrays
*
* A variant of gtk_list_store_insert_with_values() which
* takes the columns and values as two arrays, instead of
* varargs. This function is mainly intended for
* language-bindings.
*/
void
gtk_list_store_insert_with_valuesv (GtkListStore *list_store,
GtkTreeIter *iter,
gint position,
gint *columns,
GValue *values,
gint n_values)
{
GtkListStorePrivate *priv;
GtkTreePath *path;
GSequence *seq;
GSequenceIter *ptr;
GtkTreeIter tmp_iter;
gint length;
gboolean changed = FALSE;
gboolean maybe_need_sort = FALSE;
/* FIXME refactor to reduce overlap with
* gtk_list_store_insert_with_values()
*/
g_return_if_fail (GTK_IS_LIST_STORE (list_store));
priv = list_store->priv;
if (!iter)
iter = &tmp_iter;
priv->columns_dirty = TRUE;
seq = priv->seq;
length = g_sequence_get_length (seq);
if (position > length || position < 0)
position = length;
ptr = g_sequence_get_iter_at_pos (seq, position);
ptr = g_sequence_insert_before (ptr, NULL);
iter->stamp = priv->stamp;
iter->user_data = ptr;
g_assert (iter_is_valid (iter, list_store));
priv->length++;
gtk_list_store_set_vector_internal (list_store, iter,
&changed, &maybe_need_sort,
columns, values, n_values);
/* Don't emit rows_reordered here */
if (maybe_need_sort && GTK_LIST_STORE_IS_SORTED (list_store))
g_sequence_sort_changed_iter (iter->user_data,
gtk_list_store_compare_func,
list_store);
/* Just emit row_inserted */
path = gtk_list_store_get_path (GTK_TREE_MODEL (list_store), iter);
gtk_tree_model_row_inserted (GTK_TREE_MODEL (list_store), path, iter);
gtk_tree_path_free (path);
}
/* GtkBuildable custom tag implementation
*
* <columns>
* <column type="..."/>
* <column type="..."/>
* </columns>
*/
typedef struct {
gboolean translatable;
gchar *context;
int id;
} ColInfo;
typedef struct {
GtkBuilder *builder;
GObject *object;
GSList *column_type_names;
GType *column_types;
GValue *values;
gint *colids;
ColInfo **columns;
gint last_row;
gint n_columns;
gint row_column;
gboolean is_data;
const gchar *domain;
} SubParserData;
static void
list_store_start_element (GtkBuildableParseContext *context,
const gchar *element_name,
const gchar **names,
const gchar **values,
gpointer user_data,
GError **error)
{
SubParserData *data = (SubParserData*)user_data;
if (strcmp (element_name, "col") == 0)
{
gint id = -1;
const gchar *id_str;
const gchar *msg_context = NULL;
gboolean translatable = FALSE;
ColInfo *info;
GValue val = G_VALUE_INIT;
if (!_gtk_builder_check_parent (data->builder, context, "row", error))
return;
if (data->row_column >= data->n_columns)
{
g_set_error (error,
GTK_BUILDER_ERROR, GTK_BUILDER_ERROR_INVALID_VALUE,
"Too many columns, maximum is %d", data->n_columns - 1);
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING, "id", &id_str,
G_MARKUP_COLLECT_BOOLEAN|G_MARKUP_COLLECT_OPTIONAL, "translatable", &translatable,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "comments", NULL,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "context", &msg_context,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
if (!gtk_builder_value_from_string_type (data->builder, G_TYPE_INT, id_str, &val, error))
{
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
id = g_value_get_int (&val);
if (id < 0 || id >= data->n_columns)
{
g_set_error (error,
GTK_BUILDER_ERROR, GTK_BUILDER_ERROR_INVALID_VALUE,
"id value %d out of range", id);
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
info = g_slice_new0 (ColInfo);
info->translatable = translatable;
info->context = g_strdup (msg_context);
info->id = id;
data->colids[data->row_column] = id;
data->columns[data->row_column] = info;
data->row_column++;
data->is_data = TRUE;
}
else if (strcmp (element_name, "row") == 0)
{
if (!_gtk_builder_check_parent (data->builder, context, "data", error))
return;
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_INVALID, NULL, NULL,
G_MARKUP_COLLECT_INVALID))
_gtk_builder_prefix_error (data->builder, context, error);
}
else if (strcmp (element_name, "columns") == 0 ||
strcmp (element_name, "data") == 0)
{
if (!_gtk_builder_check_parent (data->builder, context, "object", error))
return;
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_INVALID, NULL, NULL,
G_MARKUP_COLLECT_INVALID))
_gtk_builder_prefix_error (data->builder, context, error);
}
else if (strcmp (element_name, "column") == 0)
{
const gchar *type;
if (!_gtk_builder_check_parent (data->builder, context, "columns", error))
return;
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_STRING, "type", &type,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, context, error);
return;
}
data->column_type_names = g_slist_prepend (data->column_type_names, g_strdup (type));
}
else
{
_gtk_builder_error_unhandled_tag (data->builder, context,
"GtkListStore", element_name,
error);
}
}
static void
list_store_end_element (GtkBuildableParseContext *context,
const gchar *element_name,
gpointer user_data,
GError **error)
{
SubParserData *data = (SubParserData*)user_data;
g_assert (data->builder);
if (strcmp (element_name, "row") == 0)
{
GtkTreeIter iter;
int i;
gtk_list_store_insert_with_valuesv (GTK_LIST_STORE (data->object),
&iter,
data->last_row,
data->colids,
data->values,
data->row_column);
for (i = 0; i < data->row_column; i++)
{
ColInfo *info = data->columns[i];
g_free (info->context);
g_slice_free (ColInfo, info);
data->columns[i] = NULL;
g_value_unset (&data->values[i]);
}
g_free (data->values);
data->values = g_new0 (GValue, data->n_columns);
data->last_row++;
data->row_column = 0;
}
else if (strcmp (element_name, "columns") == 0)
{
GType *column_types;
GSList *l;
int i;
GType type;
data->column_type_names = g_slist_reverse (data->column_type_names);
column_types = g_new0 (GType, g_slist_length (data->column_type_names));
for (l = data->column_type_names, i = 0; l; l = l->next, i++)
{
type = gtk_builder_get_type_from_name (data->builder, l->data);
if (type == G_TYPE_INVALID)
{
g_warning ("Unknown type %s specified in treemodel %s",
(const gchar*)l->data,
gtk_buildable_get_name (GTK_BUILDABLE (data->object)));
continue;
}
column_types[i] = type;
g_free (l->data);
}
gtk_list_store_set_column_types (GTK_LIST_STORE (data->object), i, column_types);
g_free (column_types);
}
else if (strcmp (element_name, "col") == 0)
{
data->is_data = FALSE;
}
}
static void
list_store_text (GtkBuildableParseContext *context,
const gchar *text,
gsize text_len,
gpointer user_data,
GError **error)
{
SubParserData *data = (SubParserData*)user_data;
gint i;
gchar *string;
ColInfo *info;
if (!data->is_data)
return;
i = data->row_column - 1;
info = data->columns[i];
string = g_strndup (text, text_len);
if (info->translatable && text_len)
{
gchar *translated;
/* FIXME: This will not use the domain set in the .ui file,
* since the parser is not telling the builder about the domain.
* However, it will work for gtk_builder_set_translation_domain() calls.
*/
translated = g_strdup (_gtk_builder_parser_translate (data->domain,
info->context,
string));
g_free (string);
string = translated;
}
if (!gtk_builder_value_from_string_type (data->builder,
data->column_types[info->id],
string,
&data->values[i],
error))
{
_gtk_builder_prefix_error (data->builder, context, error);
}
g_free (string);
}
static const GtkBuildableParser list_store_parser =
{
list_store_start_element,
list_store_end_element,
list_store_text
};
static gboolean
gtk_list_store_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GtkBuildableParser *parser,
gpointer *parser_data)
{
SubParserData *data;
if (child)
return FALSE;
if (strcmp (tagname, "columns") == 0)
{
data = g_slice_new0 (SubParserData);
data->builder = builder;
data->object = G_OBJECT (buildable);
data->column_type_names = NULL;
*parser = list_store_parser;
*parser_data = data;
return TRUE;
}
else if (strcmp (tagname, "data") == 0)
{
gint n_columns = gtk_list_store_get_n_columns (GTK_TREE_MODEL (buildable));
if (n_columns == 0)
g_error ("Cannot append data to an empty model");
data = g_slice_new0 (SubParserData);
data->builder = builder;
data->object = G_OBJECT (buildable);
data->values = g_new0 (GValue, n_columns);
data->colids = g_new0 (gint, n_columns);
data->columns = g_new0 (ColInfo*, n_columns);
data->column_types = GTK_LIST_STORE (buildable)->priv->column_headers;
data->n_columns = n_columns;
data->last_row = 0;
data->domain = gtk_builder_get_translation_domain (builder);
*parser = list_store_parser;
*parser_data = data;
return TRUE;
}
return FALSE;
}
static void
gtk_list_store_buildable_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer parser_data)
{
SubParserData *data = (SubParserData*)parser_data;
if (strcmp (tagname, "columns") == 0)
{
g_slist_free (data->column_type_names);
g_slice_free (SubParserData, data);
}
else if (strcmp (tagname, "data") == 0)
{
int i;
for (i = 0; i < data->n_columns; i++)
{
ColInfo *info = data->columns[i];
if (info)
{
g_free (info->context);
g_slice_free (ColInfo, info);
}
}
g_free (data->colids);
g_free (data->columns);
g_free (data->values);
g_slice_free (SubParserData, data);
}
}
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