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gtk2/gtk/gtktreestore.c
Cosimo Cecchi a24f7564b5 treestore: fix transformation of GValues on set 
There are three bugs here:
- we should check if the value type is transformable instead of being
  compatible, since that's all we care about in order to call
  g_value_transform()
- the check is only meaningful in the direction
  passed-in-type->column-type and not viceversa
- we should init the destination GValue to the column type before
  calling g_value_transform on it, or the destination type information
  will be missing and the method will fail

Thanks to Jasper St. Pierre and Colin Walters for all the help in
tracking this down.

https://bugzilla.gnome.org/show_bug.cgi?id=677649
2012-06-07 16:47:11 -04:00

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/* gtktreestore.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 <string.h>
#include <gobject/gvaluecollector.h>
#include "gtktreemodel.h"
#include "gtktreestore.h"
#include "gtktreedatalist.h"
#include "gtktreednd.h"
#include "gtkbuildable.h"
#include "gtkdebug.h"
#include "gtkintl.h"
/**
* SECTION:gtktreestore
* @Short_description: A tree-like data structure that can be used with the GtkTreeView
* @Title: GtkTreeStore
* @See_also: #GtkTreeModel
*
* The #GtkTreeStore 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 <link linkend="gtktreednd">drag and
* drop</link> interfaces.
*
* <refsect2 id="GtkTreeStore-BUILDER-UI">
* <title>GtkTreeStore as GtkBuildable</title>
* The GtkTreeStore implementation of the #GtkBuildable interface allows
* to specify the model columns with a &lt;columns&gt; element that may
* contain multiple &lt;column&gt; elements, each specifying one model
* column. The "type" attribute specifies the data type for the column.
* <example>
* <title>A UI Definition fragment for a tree store</title>
* <programlisting><![CDATA[
* <object class="GtkTreeStore">
* <columns>
* <column type="gchararray"/>
* <column type="gchararray"/>
* <column type="gint"/>
* </columns>
* </object>
* ]]></programlisting>
* </example>
* </refsect2>
*/
struct _GtkTreeStorePrivate
{
gint stamp;
gpointer root;
gpointer last;
gint n_columns;
gint sort_column_id;
GList *sort_list;
GtkSortType order;
GType *column_headers;
GtkTreeIterCompareFunc default_sort_func;
gpointer default_sort_data;
GDestroyNotify default_sort_destroy;
guint columns_dirty : 1;
};
#define G_NODE(node) ((GNode *)node)
#define GTK_TREE_STORE_IS_SORTED(tree) (((GtkTreeStore*)(tree))->priv->sort_column_id != GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID)
#define VALID_ITER(iter, tree_store) ((iter)!= NULL && (iter)->user_data != NULL && ((GtkTreeStore*)(tree_store))->priv->stamp == (iter)->stamp)
static void gtk_tree_store_tree_model_init (GtkTreeModelIface *iface);
static void gtk_tree_store_drag_source_init(GtkTreeDragSourceIface *iface);
static void gtk_tree_store_drag_dest_init (GtkTreeDragDestIface *iface);
static void gtk_tree_store_sortable_init (GtkTreeSortableIface *iface);
static void gtk_tree_store_buildable_init (GtkBuildableIface *iface);
static void gtk_tree_store_finalize (GObject *object);
static GtkTreeModelFlags gtk_tree_store_get_flags (GtkTreeModel *tree_model);
static gint gtk_tree_store_get_n_columns (GtkTreeModel *tree_model);
static GType gtk_tree_store_get_column_type (GtkTreeModel *tree_model,
gint index);
static gboolean gtk_tree_store_get_iter (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreePath *path);
static GtkTreePath *gtk_tree_store_get_path (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static void gtk_tree_store_get_value (GtkTreeModel *tree_model,
GtkTreeIter *iter,
gint column,
GValue *value);
static gboolean gtk_tree_store_iter_next (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static gboolean gtk_tree_store_iter_previous (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static gboolean gtk_tree_store_iter_children (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent);
static gboolean gtk_tree_store_iter_has_child (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static gint gtk_tree_store_iter_n_children (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static gboolean gtk_tree_store_iter_nth_child (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint n);
static gboolean gtk_tree_store_iter_parent (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *child);
static void gtk_tree_store_set_n_columns (GtkTreeStore *tree_store,
gint n_columns);
static void gtk_tree_store_set_column_type (GtkTreeStore *tree_store,
gint column,
GType type);
static void gtk_tree_store_increment_stamp (GtkTreeStore *tree_store);
/* DND interfaces */
static gboolean real_gtk_tree_store_row_draggable (GtkTreeDragSource *drag_source,
GtkTreePath *path);
static gboolean gtk_tree_store_drag_data_delete (GtkTreeDragSource *drag_source,
GtkTreePath *path);
static gboolean gtk_tree_store_drag_data_get (GtkTreeDragSource *drag_source,
GtkTreePath *path,
GtkSelectionData *selection_data);
static gboolean gtk_tree_store_drag_data_received (GtkTreeDragDest *drag_dest,
GtkTreePath *dest,
GtkSelectionData *selection_data);
static gboolean gtk_tree_store_row_drop_possible (GtkTreeDragDest *drag_dest,
GtkTreePath *dest_path,
GtkSelectionData *selection_data);
/* Sortable Interfaces */
static void gtk_tree_store_sort (GtkTreeStore *tree_store);
static void gtk_tree_store_sort_iter_changed (GtkTreeStore *tree_store,
GtkTreeIter *iter,
gint column,
gboolean emit_signal);
static gboolean gtk_tree_store_get_sort_column_id (GtkTreeSortable *sortable,
gint *sort_column_id,
GtkSortType *order);
static void gtk_tree_store_set_sort_column_id (GtkTreeSortable *sortable,
gint sort_column_id,
GtkSortType order);
static void gtk_tree_store_set_sort_func (GtkTreeSortable *sortable,
gint sort_column_id,
GtkTreeIterCompareFunc func,
gpointer data,
GDestroyNotify destroy);
static void gtk_tree_store_set_default_sort_func (GtkTreeSortable *sortable,
GtkTreeIterCompareFunc func,
gpointer data,
GDestroyNotify destroy);
static gboolean gtk_tree_store_has_default_sort_func (GtkTreeSortable *sortable);
/* buildable */
static gboolean gtk_tree_store_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data);
static void gtk_tree_store_buildable_custom_finished (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer user_data);
static void validate_gnode (GNode *node);
static void gtk_tree_store_move (GtkTreeStore *tree_store,
GtkTreeIter *iter,
GtkTreeIter *position,
gboolean before);
static inline void
validate_tree (GtkTreeStore *tree_store)
{
if (gtk_get_debug_flags () & GTK_DEBUG_TREE)
{
g_assert (G_NODE (tree_store->priv->root)->parent == NULL);
validate_gnode (G_NODE (tree_store->priv->root));
}
}
G_DEFINE_TYPE_WITH_CODE (GtkTreeStore, gtk_tree_store, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_MODEL,
gtk_tree_store_tree_model_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_DRAG_SOURCE,
gtk_tree_store_drag_source_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_DRAG_DEST,
gtk_tree_store_drag_dest_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_SORTABLE,
gtk_tree_store_sortable_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_tree_store_buildable_init))
static void
gtk_tree_store_class_init (GtkTreeStoreClass *class)
{
GObjectClass *object_class;
object_class = (GObjectClass *) class;
object_class->finalize = gtk_tree_store_finalize;
g_type_class_add_private (class, sizeof (GtkTreeStorePrivate));
}
static void
gtk_tree_store_tree_model_init (GtkTreeModelIface *iface)
{
iface->get_flags = gtk_tree_store_get_flags;
iface->get_n_columns = gtk_tree_store_get_n_columns;
iface->get_column_type = gtk_tree_store_get_column_type;
iface->get_iter = gtk_tree_store_get_iter;
iface->get_path = gtk_tree_store_get_path;
iface->get_value = gtk_tree_store_get_value;
iface->iter_next = gtk_tree_store_iter_next;
iface->iter_previous = gtk_tree_store_iter_previous;
iface->iter_children = gtk_tree_store_iter_children;
iface->iter_has_child = gtk_tree_store_iter_has_child;
iface->iter_n_children = gtk_tree_store_iter_n_children;
iface->iter_nth_child = gtk_tree_store_iter_nth_child;
iface->iter_parent = gtk_tree_store_iter_parent;
}
static void
gtk_tree_store_drag_source_init (GtkTreeDragSourceIface *iface)
{
iface->row_draggable = real_gtk_tree_store_row_draggable;
iface->drag_data_delete = gtk_tree_store_drag_data_delete;
iface->drag_data_get = gtk_tree_store_drag_data_get;
}
static void
gtk_tree_store_drag_dest_init (GtkTreeDragDestIface *iface)
{
iface->drag_data_received = gtk_tree_store_drag_data_received;
iface->row_drop_possible = gtk_tree_store_row_drop_possible;
}
static void
gtk_tree_store_sortable_init (GtkTreeSortableIface *iface)
{
iface->get_sort_column_id = gtk_tree_store_get_sort_column_id;
iface->set_sort_column_id = gtk_tree_store_set_sort_column_id;
iface->set_sort_func = gtk_tree_store_set_sort_func;
iface->set_default_sort_func = gtk_tree_store_set_default_sort_func;
iface->has_default_sort_func = gtk_tree_store_has_default_sort_func;
}
void
gtk_tree_store_buildable_init (GtkBuildableIface *iface)
{
iface->custom_tag_start = gtk_tree_store_buildable_custom_tag_start;
iface->custom_finished = gtk_tree_store_buildable_custom_finished;
}
static void
gtk_tree_store_init (GtkTreeStore *tree_store)
{
GtkTreeStorePrivate *priv;
priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_store,
GTK_TYPE_TREE_STORE,
GtkTreeStorePrivate);
tree_store->priv = priv;
priv->root = g_node_new (NULL);
/* While the odds are against us getting 0... */
do
{
priv->stamp = g_random_int ();
}
while (priv->stamp == 0);
priv->sort_list = NULL;
priv->sort_column_id = GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID;
priv->columns_dirty = FALSE;
}
/**
* gtk_tree_store_new:
* @n_columns: number of columns in the tree store
* @...: all #GType types for the columns, from first to last
*
* Creates a new tree 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, <literal>gtk_tree_store_new (3, G_TYPE_INT, G_TYPE_STRING,
* GDK_TYPE_PIXBUF);</literal> will create a new #GtkTreeStore with three columns, of type
* <type>int</type>, <type>string</type> and #GdkPixbuf respectively.
*
* Return value: a new #GtkTreeStore
**/
GtkTreeStore *
gtk_tree_store_new (gint n_columns,
...)
{
GtkTreeStore *retval;
va_list args;
gint i;
g_return_val_if_fail (n_columns > 0, NULL);
retval = g_object_new (GTK_TYPE_TREE_STORE, NULL);
gtk_tree_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\n", G_STRLOC, g_type_name (type));
g_object_unref (retval);
va_end (args);
return NULL;
}
gtk_tree_store_set_column_type (retval, i, type);
}
va_end (args);
return retval;
}
/**
* gtk_tree_store_newv:
* @n_columns: number of columns in the tree 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.
*
* Return value: (transfer full): a new #GtkTreeStore
* Rename to: gtk_tree_store_new
**/
GtkTreeStore *
gtk_tree_store_newv (gint n_columns,
GType *types)
{
GtkTreeStore *retval;
gint i;
g_return_val_if_fail (n_columns > 0, NULL);
retval = g_object_new (GTK_TYPE_TREE_STORE, NULL);
gtk_tree_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\n", G_STRLOC, g_type_name (types[i]));
g_object_unref (retval);
return NULL;
}
gtk_tree_store_set_column_type (retval, i, types[i]);
}
return retval;
}
/**
* gtk_tree_store_set_column_types:
* @tree_store: A #GtkTreeStore
* @n_columns: Number of columns for the tree store
* @types: (array length=n_columns): An array of #GType types, one for each column
*
* This function is meant primarily for #GObjects that inherit from
* #GtkTreeStore, and should only be used when constructing a new
* #GtkTreeStore. It will not function after a row has been added,
* or a method on the #GtkTreeModel interface is called.
**/
void
gtk_tree_store_set_column_types (GtkTreeStore *tree_store,
gint n_columns,
GType *types)
{
gint i;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (tree_store->priv->columns_dirty == 0);
gtk_tree_store_set_n_columns (tree_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\n", G_STRLOC, g_type_name (types[i]));
continue;
}
gtk_tree_store_set_column_type (tree_store, i, types[i]);
}
}
static void
gtk_tree_store_set_n_columns (GtkTreeStore *tree_store,
gint n_columns)
{
GtkTreeStorePrivate *priv = tree_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);
}
/**
* gtk_tree_store_set_column_type:
* @tree_store: a #GtkTreeStore
* @column: column number
* @type: type of the data to be stored in @column
*
* Supported types include: %G_TYPE_UINT, %G_TYPE_INT, %G_TYPE_UCHAR,
* %G_TYPE_CHAR, %G_TYPE_BOOLEAN, %G_TYPE_POINTER, %G_TYPE_FLOAT,
* %G_TYPE_DOUBLE, %G_TYPE_STRING, %G_TYPE_OBJECT, and %G_TYPE_BOXED, along with
* subclasses of those types such as %GDK_TYPE_PIXBUF.
*
**/
static void
gtk_tree_store_set_column_type (GtkTreeStore *tree_store,
gint column,
GType type)
{
GtkTreeStorePrivate *priv = tree_store->priv;
if (!_gtk_tree_data_list_check_type (type))
{
g_warning ("%s: Invalid type %s\n", G_STRLOC, g_type_name (type));
return;
}
priv->column_headers[column] = type;
}
static gboolean
node_free (GNode *node, gpointer data)
{
if (node->data)
_gtk_tree_data_list_free (node->data, (GType*)data);
node->data = NULL;
return FALSE;
}
static void
gtk_tree_store_finalize (GObject *object)
{
GtkTreeStore *tree_store = GTK_TREE_STORE (object);
GtkTreeStorePrivate *priv = tree_store->priv;
g_node_traverse (priv->root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
node_free, priv->column_headers);
g_node_destroy (priv->root);
_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;
}
/* must chain up */
G_OBJECT_CLASS (gtk_tree_store_parent_class)->finalize (object);
}
/* fulfill the GtkTreeModel requirements */
/* NOTE: GtkTreeStore::root is a GNode, that acts as the parent node. However,
* it is not visible to the tree or to the user., and the path "0" refers to the
* first child of GtkTreeStore::root.
*/
static GtkTreeModelFlags
gtk_tree_store_get_flags (GtkTreeModel *tree_model)
{
return GTK_TREE_MODEL_ITERS_PERSIST;
}
static gint
gtk_tree_store_get_n_columns (GtkTreeModel *tree_model)
{
GtkTreeStore *tree_store = (GtkTreeStore *) tree_model;
GtkTreeStorePrivate *priv = tree_store->priv;
priv->columns_dirty = TRUE;
return priv->n_columns;
}
static GType
gtk_tree_store_get_column_type (GtkTreeModel *tree_model,
gint index)
{
GtkTreeStore *tree_store = (GtkTreeStore *) tree_model;
GtkTreeStorePrivate *priv = tree_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_tree_store_get_iter (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreePath *path)
{
GtkTreeStore *tree_store = (GtkTreeStore *) tree_model;
GtkTreeStorePrivate *priv = tree_store->priv;
GtkTreeIter parent;
gint *indices;
gint depth, i;
priv->columns_dirty = TRUE;
indices = gtk_tree_path_get_indices (path);
depth = gtk_tree_path_get_depth (path);
g_return_val_if_fail (depth > 0, FALSE);
parent.stamp = priv->stamp;
parent.user_data = priv->root;
if (!gtk_tree_store_iter_nth_child (tree_model, iter, &parent, indices[0]))
{
iter->stamp = 0;
return FALSE;
}
for (i = 1; i < depth; i++)
{
parent = *iter;
if (!gtk_tree_store_iter_nth_child (tree_model, iter, &parent, indices[i]))
{
iter->stamp = 0;
return FALSE;
}
}
return TRUE;
}
static GtkTreePath *
gtk_tree_store_get_path (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkTreeStore *tree_store = (GtkTreeStore *) tree_model;
GtkTreeStorePrivate *priv = tree_store->priv;
GtkTreePath *retval;
GNode *tmp_node;
gint i = 0;
g_return_val_if_fail (iter->user_data != NULL, NULL);
g_return_val_if_fail (iter->stamp == priv->stamp, NULL);
validate_tree (tree_store);
if (G_NODE (iter->user_data)->parent == NULL &&
G_NODE (iter->user_data) == priv->root)
return gtk_tree_path_new ();
g_assert (G_NODE (iter->user_data)->parent != NULL);
if (G_NODE (iter->user_data)->parent == G_NODE (priv->root))
{
retval = gtk_tree_path_new ();
tmp_node = G_NODE (priv->root)->children;
}
else
{
GtkTreeIter tmp_iter = *iter;
tmp_iter.user_data = G_NODE (iter->user_data)->parent;
retval = gtk_tree_store_get_path (tree_model, &tmp_iter);
tmp_node = G_NODE (iter->user_data)->parent->children;
}
if (retval == NULL)
return NULL;
if (tmp_node == NULL)
{
gtk_tree_path_free (retval);
return NULL;
}
for (; tmp_node; tmp_node = tmp_node->next)
{
if (tmp_node == G_NODE (iter->user_data))
break;
i++;
}
if (tmp_node == NULL)
{
/* We couldn't find node, meaning it's prolly not ours */
/* Perhaps I should do a g_return_if_fail here. */
gtk_tree_path_free (retval);
return NULL;
}
gtk_tree_path_append_index (retval, i);
return retval;
}
static void
gtk_tree_store_get_value (GtkTreeModel *tree_model,
GtkTreeIter *iter,
gint column,
GValue *value)
{
GtkTreeStore *tree_store = (GtkTreeStore *) tree_model;
GtkTreeStorePrivate *priv = tree_store->priv;
GtkTreeDataList *list;
gint tmp_column = column;
g_return_if_fail (column < priv->n_columns);
g_return_if_fail (VALID_ITER (iter, tree_store));
list = G_NODE (iter->user_data)->data;
while (tmp_column-- > 0 && list)
list = list->next;
if (list)
{
_gtk_tree_data_list_node_to_value (list,
priv->column_headers[column],
value);
}
else
{
/* We want to return an initialized but empty (default) value */
g_value_init (value, priv->column_headers[column]);
}
}
static gboolean
gtk_tree_store_iter_next (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
g_return_val_if_fail (iter->user_data != NULL, FALSE);
g_return_val_if_fail (iter->stamp == GTK_TREE_STORE (tree_model)->priv->stamp, FALSE);
if (G_NODE (iter->user_data)->next == NULL)
{
iter->stamp = 0;
return FALSE;
}
iter->user_data = G_NODE (iter->user_data)->next;
return TRUE;
}
static gboolean
gtk_tree_store_iter_previous (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
g_return_val_if_fail (iter->user_data != NULL, FALSE);
g_return_val_if_fail (iter->stamp == GTK_TREE_STORE (tree_model)->priv->stamp, FALSE);
if (G_NODE (iter->user_data)->prev == NULL)
{
iter->stamp = 0;
return FALSE;
}
iter->user_data = G_NODE (iter->user_data)->prev;
return TRUE;
}
static gboolean
gtk_tree_store_iter_children (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent)
{
GtkTreeStore *tree_store = (GtkTreeStore *) tree_model;
GtkTreeStorePrivate *priv = tree_store->priv;
GNode *children;
if (parent)
g_return_val_if_fail (VALID_ITER (parent, tree_store), FALSE);
if (parent)
children = G_NODE (parent->user_data)->children;
else
children = G_NODE (priv->root)->children;
if (children)
{
iter->stamp = priv->stamp;
iter->user_data = children;
return TRUE;
}
else
{
iter->stamp = 0;
return FALSE;
}
}
static gboolean
gtk_tree_store_iter_has_child (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
g_return_val_if_fail (iter->user_data != NULL, FALSE);
g_return_val_if_fail (VALID_ITER (iter, tree_model), FALSE);
return G_NODE (iter->user_data)->children != NULL;
}
static gint
gtk_tree_store_iter_n_children (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GNode *node;
gint i = 0;
g_return_val_if_fail (iter == NULL || iter->user_data != NULL, 0);
if (iter == NULL)
node = G_NODE (GTK_TREE_STORE (tree_model)->priv->root)->children;
else
node = G_NODE (iter->user_data)->children;
while (node)
{
i++;
node = node->next;
}
return i;
}
static gboolean
gtk_tree_store_iter_nth_child (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint n)
{
GtkTreeStore *tree_store = (GtkTreeStore *) tree_model;
GtkTreeStorePrivate *priv = tree_store->priv;
GNode *parent_node;
GNode *child;
g_return_val_if_fail (parent == NULL || parent->user_data != NULL, FALSE);
if (parent == NULL)
parent_node = priv->root;
else
parent_node = parent->user_data;
child = g_node_nth_child (parent_node, n);
if (child)
{
iter->user_data = child;
iter->stamp = priv->stamp;
return TRUE;
}
else
{
iter->stamp = 0;
return FALSE;
}
}
static gboolean
gtk_tree_store_iter_parent (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *child)
{
GtkTreeStore *tree_store = (GtkTreeStore *) tree_model;
GtkTreeStorePrivate *priv = tree_store->priv;
GNode *parent;
g_return_val_if_fail (iter != NULL, FALSE);
g_return_val_if_fail (VALID_ITER (child, tree_store), FALSE);
parent = G_NODE (child->user_data)->parent;
g_assert (parent != NULL);
if (parent != priv->root)
{
iter->user_data = parent;
iter->stamp = priv->stamp;
return TRUE;
}
else
{
iter->stamp = 0;
return FALSE;
}
}
/* Does not emit a signal */
static gboolean
gtk_tree_store_real_set_value (GtkTreeStore *tree_store,
GtkTreeIter *iter,
gint column,
GValue *value,
gboolean sort)
{
GtkTreeStorePrivate *priv = tree_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\n",
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\n",
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_NODE (iter->user_data)->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_TREE_STORE_IS_SORTED (tree_store))
gtk_tree_store_sort_iter_changed (tree_store, iter, old_column, TRUE);
return retval;
}
column--;
prev = list;
list = list->next;
}
if (G_NODE (iter->user_data)->data == NULL)
{
G_NODE (iter->user_data)->data = list = _gtk_tree_data_list_alloc ();
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_TREE_STORE_IS_SORTED (tree_store))
gtk_tree_store_sort_iter_changed (tree_store, iter, old_column, TRUE);
return retval;
}
/**
* gtk_tree_store_set_value:
* @tree_store: a #GtkTreeStore
* @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_tree_store_set_value (GtkTreeStore *tree_store,
GtkTreeIter *iter,
gint column,
GValue *value)
{
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (VALID_ITER (iter, tree_store));
g_return_if_fail (column >= 0 && column < tree_store->priv->n_columns);
g_return_if_fail (G_IS_VALUE (value));
if (gtk_tree_store_real_set_value (tree_store, iter, column, value, TRUE))
{
GtkTreePath *path;
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), iter);
gtk_tree_model_row_changed (GTK_TREE_MODEL (tree_store), path, iter);
gtk_tree_path_free (path);
}
}
static GtkTreeIterCompareFunc
gtk_tree_store_get_compare_func (GtkTreeStore *tree_store)
{
GtkTreeStorePrivate *priv = tree_store->priv;
GtkTreeIterCompareFunc func = NULL;
if (GTK_TREE_STORE_IS_SORTED (tree_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_tree_store_set_vector_internal (GtkTreeStore *tree_store,
GtkTreeIter *iter,
gboolean *emit_signal,
gboolean *maybe_need_sort,
gint *columns,
GValue *values,
gint n_values)
{
GtkTreeStorePrivate *priv = tree_store->priv;
gint i;
GtkTreeIterCompareFunc func = NULL;
func = gtk_tree_store_get_compare_func (tree_store);
if (func != _gtk_tree_data_list_compare_func)
*maybe_need_sort = TRUE;
for (i = 0; i < n_values; i++)
{
*emit_signal = gtk_tree_store_real_set_value (tree_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_tree_store_set_valist_internal (GtkTreeStore *tree_store,
GtkTreeIter *iter,
gboolean *emit_signal,
gboolean *maybe_need_sort,
va_list var_args)
{
GtkTreeStorePrivate *priv = tree_store->priv;
gint column;
GtkTreeIterCompareFunc func = NULL;
column = va_arg (var_args, gint);
func = gtk_tree_store_get_compare_func (tree_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;
}
*emit_signal = gtk_tree_store_real_set_value (tree_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_tree_store_set_valuesv:
* @tree_store: A #GtkTreeStore
* @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_tree_store_set_valist() which takes
* the columns and values as two arrays, instead of varargs. This
* function is mainly intended for language bindings or in case
* the number of columns to change is not known until run-time.
*
* Since: 2.12
* Rename to: gtk_tree_store_set
**/
void
gtk_tree_store_set_valuesv (GtkTreeStore *tree_store,
GtkTreeIter *iter,
gint *columns,
GValue *values,
gint n_values)
{
GtkTreeStorePrivate *priv = tree_store->priv;
gboolean emit_signal = FALSE;
gboolean maybe_need_sort = FALSE;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (VALID_ITER (iter, tree_store));
gtk_tree_store_set_vector_internal (tree_store, iter,
&emit_signal,
&maybe_need_sort,
columns, values, n_values);
if (maybe_need_sort && GTK_TREE_STORE_IS_SORTED (tree_store))
gtk_tree_store_sort_iter_changed (tree_store, iter, priv->sort_column_id, TRUE);
if (emit_signal)
{
GtkTreePath *path;
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), iter);
gtk_tree_model_row_changed (GTK_TREE_MODEL (tree_store), path, iter);
gtk_tree_path_free (path);
}
}
/**
* gtk_tree_store_set_valist:
* @tree_store: A #GtkTreeStore
* @iter: A valid #GtkTreeIter for the row being modified
* @var_args: <type>va_list</type> of column/value pairs
*
* See gtk_tree_store_set(); this version takes a <type>va_list</type> for
* use by language bindings.
*
**/
void
gtk_tree_store_set_valist (GtkTreeStore *tree_store,
GtkTreeIter *iter,
va_list var_args)
{
GtkTreeStorePrivate *priv = tree_store->priv;
gboolean emit_signal = FALSE;
gboolean maybe_need_sort = FALSE;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (VALID_ITER (iter, tree_store));
gtk_tree_store_set_valist_internal (tree_store, iter,
&emit_signal,
&maybe_need_sort,
var_args);
if (maybe_need_sort && GTK_TREE_STORE_IS_SORTED (tree_store))
gtk_tree_store_sort_iter_changed (tree_store, iter, priv->sort_column_id, TRUE);
if (emit_signal)
{
GtkTreePath *path;
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), iter);
gtk_tree_model_row_changed (GTK_TREE_MODEL (tree_store), path, iter);
gtk_tree_path_free (path);
}
}
/**
* gtk_tree_store_set:
* @tree_store: A #GtkTreeStore
* @iter: A valid #GtkTreeIter for the row being modified
* @...: 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
* <literal>gtk_tree_store_set (store, iter, 0, "Foo", -1)</literal>.
*
* 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_tree_store_set (GtkTreeStore *tree_store,
GtkTreeIter *iter,
...)
{
va_list var_args;
va_start (var_args, iter);
gtk_tree_store_set_valist (tree_store, iter, var_args);
va_end (var_args);
}
/**
* gtk_tree_store_remove:
* @tree_store: A #GtkTreeStore
* @iter: A valid #GtkTreeIter
*
* Removes @iter from @tree_store. After being removed, @iter is set to the
* next valid row at that level, or invalidated if it previously pointed to the
* last one.
*
* Return value: %TRUE if @iter is still valid, %FALSE if not.
**/
gboolean
gtk_tree_store_remove (GtkTreeStore *tree_store,
GtkTreeIter *iter)
{
GtkTreeStorePrivate *priv = tree_store->priv;
GtkTreePath *path;
GtkTreeIter new_iter = {0,};
GNode *parent;
GNode *next_node;
g_return_val_if_fail (GTK_IS_TREE_STORE (tree_store), FALSE);
g_return_val_if_fail (VALID_ITER (iter, tree_store), FALSE);
parent = G_NODE (iter->user_data)->parent;
g_assert (parent != NULL);
next_node = G_NODE (iter->user_data)->next;
if (G_NODE (iter->user_data)->data)
g_node_traverse (G_NODE (iter->user_data), G_POST_ORDER, G_TRAVERSE_ALL,
-1, node_free, priv->column_headers);
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), iter);
g_node_destroy (G_NODE (iter->user_data));
gtk_tree_model_row_deleted (GTK_TREE_MODEL (tree_store), path);
if (parent != G_NODE (priv->root))
{
/* child_toggled */
if (parent->children == NULL)
{
gtk_tree_path_up (path);
new_iter.stamp = priv->stamp;
new_iter.user_data = parent;
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (tree_store), path, &new_iter);
}
}
gtk_tree_path_free (path);
/* revalidate iter */
if (next_node != NULL)
{
iter->stamp = priv->stamp;
iter->user_data = next_node;
return TRUE;
}
else
{
iter->stamp = 0;
iter->user_data = NULL;
}
return FALSE;
}
/**
* gtk_tree_store_insert:
* @tree_store: A #GtkTreeStore
* @iter: (out): An unset #GtkTreeIter to set to the new row
* @parent: (allow-none): A valid #GtkTreeIter, or %NULL
* @position: position to insert the new row
*
* Creates a new row at @position. If parent is non-%NULL, then the row will be
* made a child of @parent. Otherwise, the row will be created at the toplevel.
* If @position is larger than the number of rows at that level, then the new
* row will be inserted 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_tree_store_set() or
* gtk_tree_store_set_value().
*
**/
void
gtk_tree_store_insert (GtkTreeStore *tree_store,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint position)
{
GtkTreeStorePrivate *priv = tree_store->priv;
GtkTreePath *path;
GNode *parent_node;
GNode *new_node;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (iter != NULL);
if (parent)
g_return_if_fail (VALID_ITER (parent, tree_store));
if (parent)
parent_node = parent->user_data;
else
parent_node = priv->root;
priv->columns_dirty = TRUE;
new_node = g_node_new (NULL);
iter->stamp = priv->stamp;
iter->user_data = new_node;
g_node_insert (parent_node, position, new_node);
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), iter);
gtk_tree_model_row_inserted (GTK_TREE_MODEL (tree_store), path, iter);
if (parent_node != priv->root)
{
if (new_node->prev == NULL && new_node->next == NULL)
{
gtk_tree_path_up (path);
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (tree_store), path, parent);
}
}
gtk_tree_path_free (path);
validate_tree ((GtkTreeStore*)tree_store);
}
/**
* gtk_tree_store_insert_before:
* @tree_store: A #GtkTreeStore
* @iter: (out): An unset #GtkTreeIter to set to the new row
* @parent: (allow-none): A valid #GtkTreeIter, or %NULL
* @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 @parent 's children. If @parent and @sibling are %NULL, then
* the row will be appended to the toplevel. If both @sibling and @parent are
* set, then @parent must be the parent of @sibling. When @sibling is set,
* @parent is optional.
*
* @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_tree_store_set() or gtk_tree_store_set_value().
*
**/
void
gtk_tree_store_insert_before (GtkTreeStore *tree_store,
GtkTreeIter *iter,
GtkTreeIter *parent,
GtkTreeIter *sibling)
{
GtkTreeStorePrivate *priv = tree_store->priv;
GtkTreePath *path;
GNode *parent_node = NULL;
GNode *new_node;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (iter != NULL);
if (parent != NULL)
g_return_if_fail (VALID_ITER (parent, tree_store));
if (sibling != NULL)
g_return_if_fail (VALID_ITER (sibling, tree_store));
if (parent == NULL && sibling == NULL)
parent_node = priv->root;
else if (parent == NULL)
parent_node = G_NODE (sibling->user_data)->parent;
else if (sibling == NULL)
parent_node = G_NODE (parent->user_data);
else
{
g_return_if_fail (G_NODE (sibling->user_data)->parent == G_NODE (parent->user_data));
parent_node = G_NODE (parent->user_data);
}
priv->columns_dirty = TRUE;
new_node = g_node_new (NULL);
g_node_insert_before (parent_node,
sibling ? G_NODE (sibling->user_data) : NULL,
new_node);
iter->stamp = priv->stamp;
iter->user_data = new_node;
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), iter);
gtk_tree_model_row_inserted (GTK_TREE_MODEL (tree_store), path, iter);
if (parent_node != priv->root)
{
if (new_node->prev == NULL && new_node->next == NULL)
{
GtkTreeIter parent_iter;
parent_iter.stamp = priv->stamp;
parent_iter.user_data = parent_node;
gtk_tree_path_up (path);
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (tree_store), path, &parent_iter);
}
}
gtk_tree_path_free (path);
validate_tree (tree_store);
}
/**
* gtk_tree_store_insert_after:
* @tree_store: A #GtkTreeStore
* @iter: (out): An unset #GtkTreeIter to set to the new row
* @parent: (allow-none): A valid #GtkTreeIter, or %NULL
* @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 @parent 's children. If @parent and @sibling are %NULL, then
* the row will be prepended to the toplevel. If both @sibling and @parent are
* set, then @parent must be the parent of @sibling. When @sibling is set,
* @parent is optional.
*
* @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_tree_store_set() or gtk_tree_store_set_value().
*
**/
void
gtk_tree_store_insert_after (GtkTreeStore *tree_store,
GtkTreeIter *iter,
GtkTreeIter *parent,
GtkTreeIter *sibling)
{
GtkTreeStorePrivate *priv = tree_store->priv;
GtkTreePath *path;
GNode *parent_node;
GNode *new_node;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (iter != NULL);
if (parent != NULL)
g_return_if_fail (VALID_ITER (parent, tree_store));
if (sibling != NULL)
g_return_if_fail (VALID_ITER (sibling, tree_store));
if (parent == NULL && sibling == NULL)
parent_node = priv->root;
else if (parent == NULL)
parent_node = G_NODE (sibling->user_data)->parent;
else if (sibling == NULL)
parent_node = G_NODE (parent->user_data);
else
{
g_return_if_fail (G_NODE (sibling->user_data)->parent ==
G_NODE (parent->user_data));
parent_node = G_NODE (parent->user_data);
}
priv->columns_dirty = TRUE;
new_node = g_node_new (NULL);
g_node_insert_after (parent_node,
sibling ? G_NODE (sibling->user_data) : NULL,
new_node);
iter->stamp = priv->stamp;
iter->user_data = new_node;
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), iter);
gtk_tree_model_row_inserted (GTK_TREE_MODEL (tree_store), path, iter);
if (parent_node != priv->root)
{
if (new_node->prev == NULL && new_node->next == NULL)
{
GtkTreeIter parent_iter;
parent_iter.stamp = priv->stamp;
parent_iter.user_data = parent_node;
gtk_tree_path_up (path);
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (tree_store), path, &parent_iter);
}
}
gtk_tree_path_free (path);
validate_tree (tree_store);
}
/**
* gtk_tree_store_insert_with_values:
* @tree_store: A #GtkTreeStore
* @iter: (out) (allow-none): An unset #GtkTreeIter to set the new row, or %NULL.
* @parent: (allow-none): A valid #GtkTreeIter, 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 on 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
* <literal>gtk_tree_store_insert_with_values (tree_store, iter, position, ...)</literal>
* has the same effect as calling
* |[
* gtk_tree_store_insert (tree_store, iter, position);
* gtk_tree_store_set (tree_store, iter, ...);
* ]|
* with the different that the former will only emit a row_inserted signal,
* while the latter will emit row_inserted, row_changed and if the tree store
* is sorted, rows_reordered. Since emitting the rows_reordered signal
* repeatedly can affect the performance of the program,
* gtk_tree_store_insert_with_values() should generally be preferred when
* inserting rows in a sorted tree store.
*
* Since: 2.10
*/
void
gtk_tree_store_insert_with_values (GtkTreeStore *tree_store,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint position,
...)
{
GtkTreeStorePrivate *priv = tree_store->priv;
GtkTreePath *path;
GNode *parent_node;
GNode *new_node;
GtkTreeIter tmp_iter;
va_list var_args;
gboolean changed = FALSE;
gboolean maybe_need_sort = FALSE;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
if (!iter)
iter = &tmp_iter;
if (parent)
g_return_if_fail (VALID_ITER (parent, tree_store));
if (parent)
parent_node = parent->user_data;
else
parent_node = priv->root;
priv->columns_dirty = TRUE;
new_node = g_node_new (NULL);
iter->stamp = priv->stamp;
iter->user_data = new_node;
g_node_insert (parent_node, position, new_node);
va_start (var_args, position);
gtk_tree_store_set_valist_internal (tree_store, iter,
&changed, &maybe_need_sort,
var_args);
va_end (var_args);
if (maybe_need_sort && GTK_TREE_STORE_IS_SORTED (tree_store))
gtk_tree_store_sort_iter_changed (tree_store, iter, priv->sort_column_id, FALSE);
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), iter);
gtk_tree_model_row_inserted (GTK_TREE_MODEL (tree_store), path, iter);
if (parent_node != priv->root)
{
if (new_node->prev == NULL && new_node->next == NULL)
{
gtk_tree_path_up (path);
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (tree_store), path, parent);
}
}
gtk_tree_path_free (path);
validate_tree ((GtkTreeStore *)tree_store);
}
/**
* gtk_tree_store_insert_with_valuesv:
* @tree_store: A #GtkTreeStore
* @iter: (out) (allow-none): An unset #GtkTreeIter to set the new row, or %NULL.
* @parent: (allow-none): A valid #GtkTreeIter, or %NULL
* @position: position to insert the new row
* @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_tree_store_insert_with_values() which takes
* the columns and values as two arrays, instead of varargs. This
* function is mainly intended for language bindings.
*
* Since: 2.10
* Rename to: gtk_tree_store_insert_with_values
*/
void
gtk_tree_store_insert_with_valuesv (GtkTreeStore *tree_store,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint position,
gint *columns,
GValue *values,
gint n_values)
{
GtkTreeStorePrivate *priv = tree_store->priv;
GtkTreePath *path;
GNode *parent_node;
GNode *new_node;
GtkTreeIter tmp_iter;
gboolean changed = FALSE;
gboolean maybe_need_sort = FALSE;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
if (!iter)
iter = &tmp_iter;
if (parent)
g_return_if_fail (VALID_ITER (parent, tree_store));
if (parent)
parent_node = parent->user_data;
else
parent_node = priv->root;
priv->columns_dirty = TRUE;
new_node = g_node_new (NULL);
iter->stamp = priv->stamp;
iter->user_data = new_node;
g_node_insert (parent_node, position, new_node);
gtk_tree_store_set_vector_internal (tree_store, iter,
&changed, &maybe_need_sort,
columns, values, n_values);
if (maybe_need_sort && GTK_TREE_STORE_IS_SORTED (tree_store))
gtk_tree_store_sort_iter_changed (tree_store, iter, priv->sort_column_id, FALSE);
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), iter);
gtk_tree_model_row_inserted (GTK_TREE_MODEL (tree_store), path, iter);
if (parent_node != priv->root)
{
if (new_node->prev == NULL && new_node->next == NULL)
{
gtk_tree_path_up (path);
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (tree_store), path, parent);
}
}
gtk_tree_path_free (path);
validate_tree ((GtkTreeStore *)tree_store);
}
/**
* gtk_tree_store_prepend:
* @tree_store: A #GtkTreeStore
* @iter: (out): An unset #GtkTreeIter to set to the prepended row
* @parent: (allow-none): A valid #GtkTreeIter, or %NULL
*
* Prepends a new row to @tree_store. If @parent is non-%NULL, then it will prepend
* the new row before the first child of @parent, otherwise it will prepend a row
* to the top level. @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_tree_store_set() or gtk_tree_store_set_value().
**/
void
gtk_tree_store_prepend (GtkTreeStore *tree_store,
GtkTreeIter *iter,
GtkTreeIter *parent)
{
GtkTreeStorePrivate *priv = tree_store->priv;
GNode *parent_node;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (iter != NULL);
if (parent != NULL)
g_return_if_fail (VALID_ITER (parent, tree_store));
priv->columns_dirty = TRUE;
if (parent == NULL)
parent_node = priv->root;
else
parent_node = parent->user_data;
if (parent_node->children == NULL)
{
GtkTreePath *path;
iter->stamp = priv->stamp;
iter->user_data = g_node_new (NULL);
g_node_prepend (parent_node, G_NODE (iter->user_data));
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), iter);
gtk_tree_model_row_inserted (GTK_TREE_MODEL (tree_store), path, iter);
if (parent_node != priv->root)
{
gtk_tree_path_up (path);
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (tree_store), path, parent);
}
gtk_tree_path_free (path);
}
else
{
gtk_tree_store_insert_after (tree_store, iter, parent, NULL);
}
validate_tree (tree_store);
}
/**
* gtk_tree_store_append:
* @tree_store: A #GtkTreeStore
* @iter: (out): An unset #GtkTreeIter to set to the appended row
* @parent: (allow-none): A valid #GtkTreeIter, or %NULL
*
* Appends a new row to @tree_store. If @parent is non-%NULL, then it will append the
* new row after the last child of @parent, otherwise it will append a row to
* the top level. @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_tree_store_set() or gtk_tree_store_set_value().
**/
void
gtk_tree_store_append (GtkTreeStore *tree_store,
GtkTreeIter *iter,
GtkTreeIter *parent)
{
GtkTreeStorePrivate *priv = tree_store->priv;
GNode *parent_node;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (iter != NULL);
if (parent != NULL)
g_return_if_fail (VALID_ITER (parent, tree_store));
if (parent == NULL)
parent_node = priv->root;
else
parent_node = parent->user_data;
priv->columns_dirty = TRUE;
if (parent_node->children == NULL)
{
GtkTreePath *path;
iter->stamp = priv->stamp;
iter->user_data = g_node_new (NULL);
g_node_append (parent_node, G_NODE (iter->user_data));
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), iter);
gtk_tree_model_row_inserted (GTK_TREE_MODEL (tree_store), path, iter);
if (parent_node != priv->root)
{
gtk_tree_path_up (path);
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (tree_store), path, parent);
}
gtk_tree_path_free (path);
}
else
{
gtk_tree_store_insert_before (tree_store, iter, parent, NULL);
}
validate_tree (tree_store);
}
/**
* gtk_tree_store_is_ancestor:
* @tree_store: A #GtkTreeStore
* @iter: A valid #GtkTreeIter
* @descendant: A valid #GtkTreeIter
*
* Returns %TRUE if @iter is an ancestor of @descendant. That is, @iter is the
* parent (or grandparent or great-grandparent) of @descendant.
*
* Return value: %TRUE, if @iter is an ancestor of @descendant
**/
gboolean
gtk_tree_store_is_ancestor (GtkTreeStore *tree_store,
GtkTreeIter *iter,
GtkTreeIter *descendant)
{
g_return_val_if_fail (GTK_IS_TREE_STORE (tree_store), FALSE);
g_return_val_if_fail (VALID_ITER (iter, tree_store), FALSE);
g_return_val_if_fail (VALID_ITER (descendant, tree_store), FALSE);
return g_node_is_ancestor (G_NODE (iter->user_data),
G_NODE (descendant->user_data));
}
/**
* gtk_tree_store_iter_depth:
* @tree_store: A #GtkTreeStore
* @iter: A valid #GtkTreeIter
*
* Returns the depth of @iter. This will be 0 for anything on the root level, 1
* for anything down a level, etc.
*
* Return value: The depth of @iter
**/
gint
gtk_tree_store_iter_depth (GtkTreeStore *tree_store,
GtkTreeIter *iter)
{
g_return_val_if_fail (GTK_IS_TREE_STORE (tree_store), 0);
g_return_val_if_fail (VALID_ITER (iter, tree_store), 0);
return g_node_depth (G_NODE (iter->user_data)) - 2;
}
/* simple ripoff from g_node_traverse_post_order */
static gboolean
gtk_tree_store_clear_traverse (GNode *node,
GtkTreeStore *store)
{
GtkTreeIter iter;
if (node->children)
{
GNode *child;
child = node->children;
while (child)
{
register GNode *current;
current = child;
child = current->next;
if (gtk_tree_store_clear_traverse (current, store))
return TRUE;
}
if (node->parent)
{
iter.stamp = store->priv->stamp;
iter.user_data = node;
gtk_tree_store_remove (store, &iter);
}
}
else if (node->parent)
{
iter.stamp = store->priv->stamp;
iter.user_data = node;
gtk_tree_store_remove (store, &iter);
}
return FALSE;
}
static void
gtk_tree_store_increment_stamp (GtkTreeStore *tree_store)
{
GtkTreeStorePrivate *priv = tree_store->priv;
do
{
priv->stamp++;
}
while (priv->stamp == 0);
}
/**
* gtk_tree_store_clear:
* @tree_store: a #GtkTreeStore
*
* Removes all rows from @tree_store
**/
void
gtk_tree_store_clear (GtkTreeStore *tree_store)
{
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
gtk_tree_store_clear_traverse (tree_store->priv->root, tree_store);
gtk_tree_store_increment_stamp (tree_store);
}
static gboolean
gtk_tree_store_iter_is_valid_helper (GtkTreeIter *iter,
GNode *first)
{
GNode *node;
node = first;
do
{
if (node == iter->user_data)
return TRUE;
if (node->children)
if (gtk_tree_store_iter_is_valid_helper (iter, node->children))
return TRUE;
node = node->next;
}
while (node);
return FALSE;
}
/**
* gtk_tree_store_iter_is_valid:
* @tree_store: A #GtkTreeStore.
* @iter: A #GtkTreeIter.
*
* WARNING: This function is slow. Only use it for debugging and/or testing
* purposes.
*
* Checks if the given iter is a valid iter for this #GtkTreeStore.
*
* Return value: %TRUE if the iter is valid, %FALSE if the iter is invalid.
*
* Since: 2.2
**/
gboolean
gtk_tree_store_iter_is_valid (GtkTreeStore *tree_store,
GtkTreeIter *iter)
{
g_return_val_if_fail (GTK_IS_TREE_STORE (tree_store), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
if (!VALID_ITER (iter, tree_store))
return FALSE;
return gtk_tree_store_iter_is_valid_helper (iter, tree_store->priv->root);
}
/* DND */
static gboolean real_gtk_tree_store_row_draggable (GtkTreeDragSource *drag_source,
GtkTreePath *path)
{
return TRUE;
}
static gboolean
gtk_tree_store_drag_data_delete (GtkTreeDragSource *drag_source,
GtkTreePath *path)
{
GtkTreeIter iter;
if (gtk_tree_store_get_iter (GTK_TREE_MODEL (drag_source),
&iter,
path))
{
gtk_tree_store_remove (GTK_TREE_STORE (drag_source),
&iter);
return TRUE;
}
else
{
return FALSE;
}
}
static gboolean
gtk_tree_store_drag_data_get (GtkTreeDragSource *drag_source,
GtkTreePath *path,
GtkSelectionData *selection_data)
{
/* 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.
*/
if (gtk_tree_set_row_drag_data (selection_data,
GTK_TREE_MODEL (drag_source),
path))
{
return TRUE;
}
else
{
/* FIXME handle text targets at least. */
}
return FALSE;
}
static void
copy_node_data (GtkTreeStore *tree_store,
GtkTreeIter *src_iter,
GtkTreeIter *dest_iter)
{
GtkTreeDataList *dl = G_NODE (src_iter->user_data)->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, tree_store->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;
}
G_NODE (dest_iter->user_data)->data = copy_head;
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), dest_iter);
gtk_tree_model_row_changed (GTK_TREE_MODEL (tree_store), path, dest_iter);
gtk_tree_path_free (path);
}
static void
recursive_node_copy (GtkTreeStore *tree_store,
GtkTreeIter *src_iter,
GtkTreeIter *dest_iter)
{
GtkTreeIter child;
GtkTreeModel *model;
model = GTK_TREE_MODEL (tree_store);
copy_node_data (tree_store, src_iter, dest_iter);
if (gtk_tree_store_iter_children (model,
&child,
src_iter))
{
/* Need to create children and recurse. Note our
* dependence on persistent iterators here.
*/
do
{
GtkTreeIter copy;
/* Gee, a really slow algorithm... ;-) FIXME */
gtk_tree_store_append (tree_store,
&copy,
dest_iter);
recursive_node_copy (tree_store, &child, &copy);
}
while (gtk_tree_store_iter_next (model, &child));
}
}
static gboolean
gtk_tree_store_drag_data_received (GtkTreeDragDest *drag_dest,
GtkTreePath *dest,
GtkSelectionData *selection_data)
{
GtkTreeModel *tree_model;
GtkTreeStore *tree_store;
GtkTreeModel *src_model = NULL;
GtkTreePath *src_path = NULL;
gboolean retval = FALSE;
tree_model = GTK_TREE_MODEL (drag_dest);
tree_store = GTK_TREE_STORE (drag_dest);
validate_tree (tree_store);
if (gtk_tree_get_row_drag_data (selection_data,
&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_tree_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))
{
GtkTreeIter dest_parent;
GtkTreePath *parent;
GtkTreeIter *dest_parent_p;
/* dest was the first spot at the current depth; which means
* we are supposed to prepend.
*/
/* Get the parent, NULL if parent is the root */
dest_parent_p = NULL;
parent = gtk_tree_path_copy (dest);
if (gtk_tree_path_up (parent) &&
gtk_tree_path_get_depth (parent) > 0)
{
gtk_tree_store_get_iter (tree_model,
&dest_parent,
parent);
dest_parent_p = &dest_parent;
}
gtk_tree_path_free (parent);
parent = NULL;
gtk_tree_store_prepend (tree_store,
&dest_iter,
dest_parent_p);
retval = TRUE;
}
else
{
if (gtk_tree_store_get_iter (tree_model, &dest_iter, prev))
{
GtkTreeIter tmp_iter = dest_iter;
gtk_tree_store_insert_after (tree_store, &dest_iter, NULL,
&tmp_iter);
retval = TRUE;
}
}
gtk_tree_path_free (prev);
/* If we succeeded in creating dest_iter, walk src_iter tree branch,
* duplicating it below dest_iter.
*/
if (retval)
{
recursive_node_copy (tree_store,
&src_iter,
&dest_iter);
}
}
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_tree_store_row_drop_possible (GtkTreeDragDest *drag_dest,
GtkTreePath *dest_path,
GtkSelectionData *selection_data)
{
GtkTreeModel *src_model = NULL;
GtkTreePath *src_path = NULL;
GtkTreePath *tmp = NULL;
gboolean retval = FALSE;
/* don't accept drops if the tree has been sorted */
if (GTK_TREE_STORE_IS_SORTED (drag_dest))
return FALSE;
if (!gtk_tree_get_row_drag_data (selection_data,
&src_model,
&src_path))
goto out;
/* can only drag to ourselves */
if (src_model != GTK_TREE_MODEL (drag_dest))
goto out;
/* Can't drop into ourself. */
if (gtk_tree_path_is_ancestor (src_path,
dest_path))
goto out;
/* Can't drop if dest_path's parent doesn't exist */
{
GtkTreeIter iter;
if (gtk_tree_path_get_depth (dest_path) > 1)
{
tmp = gtk_tree_path_copy (dest_path);
gtk_tree_path_up (tmp);
if (!gtk_tree_store_get_iter (GTK_TREE_MODEL (drag_dest),
&iter, tmp))
goto out;
}
}
/* Can otherwise drop anywhere. */
retval = TRUE;
out:
if (src_path)
gtk_tree_path_free (src_path);
if (tmp)
gtk_tree_path_free (tmp);
return retval;
}
/* Sorting and reordering */
typedef struct _SortTuple
{
gint offset;
GNode *node;
} SortTuple;
/* Reordering */
static gint
gtk_tree_store_reorder_func (gconstpointer a,
gconstpointer b,
gpointer user_data)
{
SortTuple *a_reorder;
SortTuple *b_reorder;
a_reorder = (SortTuple *)a;
b_reorder = (SortTuple *)b;
if (a_reorder->offset < b_reorder->offset)
return -1;
if (a_reorder->offset > b_reorder->offset)
return 1;
return 0;
}
/**
* gtk_tree_store_reorder: (skip)
* @tree_store: A #GtkTreeStore.
* @parent: A #GtkTreeIter.
* @new_order: (array): an array of integers mapping the new position of each child
* to its old position before the re-ordering,
* i.e. @new_order<literal>[newpos] = oldpos</literal>.
*
* Reorders the children of @parent in @tree_store to follow the order
* indicated by @new_order. Note that this function only works with
* unsorted stores.
*
* Since: 2.2
**/
void
gtk_tree_store_reorder (GtkTreeStore *tree_store,
GtkTreeIter *parent,
gint *new_order)
{
gint i, length = 0;
GNode *level, *node;
GtkTreePath *path;
SortTuple *sort_array;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (!GTK_TREE_STORE_IS_SORTED (tree_store));
g_return_if_fail (parent == NULL || VALID_ITER (parent, tree_store));
g_return_if_fail (new_order != NULL);
if (!parent)
level = G_NODE (tree_store->priv->root)->children;
else
level = G_NODE (parent->user_data)->children;
/* count nodes */
node = level;
while (node)
{
length++;
node = node->next;
}
/* set up sortarray */
sort_array = g_new (SortTuple, length);
node = level;
for (i = 0; i < length; i++)
{
sort_array[new_order[i]].offset = i;
sort_array[i].node = node;
node = node->next;
}
g_qsort_with_data (sort_array,
length,
sizeof (SortTuple),
gtk_tree_store_reorder_func,
NULL);
/* fix up level */
for (i = 0; i < length - 1; i++)
{
sort_array[i].node->next = sort_array[i+1].node;
sort_array[i+1].node->prev = sort_array[i].node;
}
sort_array[length-1].node->next = NULL;
sort_array[0].node->prev = NULL;
if (parent)
G_NODE (parent->user_data)->children = sort_array[0].node;
else
G_NODE (tree_store->priv->root)->children = sort_array[0].node;
/* emit signal */
if (parent)
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), parent);
else
path = gtk_tree_path_new ();
gtk_tree_model_rows_reordered (GTK_TREE_MODEL (tree_store), path,
parent, new_order);
gtk_tree_path_free (path);
g_free (sort_array);
}
/**
* gtk_tree_store_swap:
* @tree_store: A #GtkTreeStore.
* @a: A #GtkTreeIter.
* @b: Another #GtkTreeIter.
*
* Swaps @a and @b in the same level of @tree_store. Note that this function
* only works with unsorted stores.
*
* Since: 2.2
**/
void
gtk_tree_store_swap (GtkTreeStore *tree_store,
GtkTreeIter *a,
GtkTreeIter *b)
{
GNode *tmp, *node_a, *node_b, *parent_node;
GNode *a_prev, *a_next, *b_prev, *b_next;
gint i, a_count, b_count, length, *order;
GtkTreePath *path_a, *path_b;
GtkTreeIter parent;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (VALID_ITER (a, tree_store));
g_return_if_fail (VALID_ITER (b, tree_store));
node_a = G_NODE (a->user_data);
node_b = G_NODE (b->user_data);
/* basic sanity checking */
if (node_a == node_b)
return;
path_a = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), a);
path_b = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), b);
g_return_if_fail (path_a && path_b);
gtk_tree_path_up (path_a);
gtk_tree_path_up (path_b);
if (gtk_tree_path_get_depth (path_a) == 0
|| gtk_tree_path_get_depth (path_b) == 0)
{
if (gtk_tree_path_get_depth (path_a) != gtk_tree_path_get_depth (path_b))
{
gtk_tree_path_free (path_a);
gtk_tree_path_free (path_b);
g_warning ("Given children are not in the same level\n");
return;
}
parent_node = G_NODE (tree_store->priv->root);
}
else
{
if (gtk_tree_path_compare (path_a, path_b))
{
gtk_tree_path_free (path_a);
gtk_tree_path_free (path_b);
g_warning ("Given children don't have a common parent\n");
return;
}
gtk_tree_store_get_iter (GTK_TREE_MODEL (tree_store), &parent,
path_a);
parent_node = G_NODE (parent.user_data);
}
gtk_tree_path_free (path_b);
/* old links which we have to keep around */
a_prev = node_a->prev;
a_next = node_a->next;
b_prev = node_b->prev;
b_next = node_b->next;
/* fix up links if the nodes are next to eachother */
if (a_prev == node_b)
a_prev = node_a;
if (a_next == node_b)
a_next = node_a;
if (b_prev == node_a)
b_prev = node_b;
if (b_next == node_a)
b_next = node_b;
/* counting nodes */
tmp = parent_node->children;
i = a_count = b_count = 0;
while (tmp)
{
if (tmp == node_a)
a_count = i;
if (tmp == node_b)
b_count = i;
tmp = tmp->next;
i++;
}
length = i;
/* hacking the tree */
if (!a_prev)
parent_node->children = node_b;
else
a_prev->next = node_b;
if (a_next)
a_next->prev = node_b;
if (!b_prev)
parent_node->children = node_a;
else
b_prev->next = node_a;
if (b_next)
b_next->prev = node_a;
node_a->prev = b_prev;
node_a->next = b_next;
node_b->prev = a_prev;
node_b->next = a_next;
/* emit signal */
order = g_new (gint, length);
for (i = 0; i < length; i++)
if (i == a_count)
order[i] = b_count;
else if (i == b_count)
order[i] = a_count;
else
order[i] = i;
gtk_tree_model_rows_reordered (GTK_TREE_MODEL (tree_store), path_a,
parent_node == tree_store->priv->root
? NULL : &parent, order);
gtk_tree_path_free (path_a);
g_free (order);
}
/* WARNING: this function is *incredibly* fragile. Please smashtest after
* making changes here.
* -Kris
*/
static void
gtk_tree_store_move (GtkTreeStore *tree_store,
GtkTreeIter *iter,
GtkTreeIter *position,
gboolean before)
{
GNode *parent, *node, *a, *b, *tmp, *tmp_a, *tmp_b;
gint old_pos, new_pos, length, i, *order;
GtkTreePath *path = NULL, *tmppath, *pos_path = NULL;
GtkTreeIter parent_iter, dst_a, dst_b;
gint depth = 0;
gboolean handle_b = TRUE;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (!GTK_TREE_STORE_IS_SORTED (tree_store));
g_return_if_fail (VALID_ITER (iter, tree_store));
if (position)
g_return_if_fail (VALID_ITER (position, tree_store));
a = b = NULL;
/* sanity checks */
if (position)
{
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), iter);
pos_path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store),
position);
/* if before:
* moving the iter before path or "path + 1" doesn't make sense
* else
* moving the iter before path or "path - 1" doesn't make sense
*/
if (!gtk_tree_path_compare (path, pos_path))
goto free_paths_and_out;
if (before)
gtk_tree_path_next (path);
else
gtk_tree_path_prev (path);
if (!gtk_tree_path_compare (path, pos_path))
goto free_paths_and_out;
if (before)
gtk_tree_path_prev (path);
else
gtk_tree_path_next (path);
if (gtk_tree_path_get_depth (path) != gtk_tree_path_get_depth (pos_path))
{
g_warning ("Given children are not in the same level\n");
goto free_paths_and_out;
}
tmppath = gtk_tree_path_copy (pos_path);
gtk_tree_path_up (path);
gtk_tree_path_up (tmppath);
if (gtk_tree_path_get_depth (path) > 0 &&
gtk_tree_path_compare (path, tmppath))
{
g_warning ("Given children are not in the same level\n");
gtk_tree_path_free (tmppath);
goto free_paths_and_out;
}
gtk_tree_path_free (tmppath);
}
if (!path)
{
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), iter);
gtk_tree_path_up (path);
}
depth = gtk_tree_path_get_depth (path);
if (depth)
{
gtk_tree_store_get_iter (GTK_TREE_MODEL (tree_store),
&parent_iter, path);
parent = G_NODE (parent_iter.user_data);
}
else
parent = G_NODE (tree_store->priv->root);
/* yes, I know that this can be done shorter, but I'm doing it this way
* so the code is also maintainable
*/
if (before && position)
{
b = G_NODE (position->user_data);
if (gtk_tree_path_get_indices (pos_path)[gtk_tree_path_get_depth (pos_path) - 1] > 0)
{
gtk_tree_path_prev (pos_path);
if (gtk_tree_store_get_iter (GTK_TREE_MODEL (tree_store),
&dst_a, pos_path))
a = G_NODE (dst_a.user_data);
else
a = NULL;
gtk_tree_path_next (pos_path);
}
/* if b is NULL, a is NULL too -- we are at the beginning of the list
* yes and we leak memory here ...
*/
g_return_if_fail (b);
}
else if (before && !position)
{
/* move before without position is appending */
a = NULL;
b = NULL;
}
else /* !before */
{
if (position)
a = G_NODE (position->user_data);
else
a = NULL;
if (position)
{
gtk_tree_path_next (pos_path);
if (gtk_tree_store_get_iter (GTK_TREE_MODEL (tree_store), &dst_b, pos_path))
b = G_NODE (dst_b.user_data);
else
b = NULL;
gtk_tree_path_prev (pos_path);
}
else
{
/* move after without position is prepending */
if (depth)
gtk_tree_store_iter_children (GTK_TREE_MODEL (tree_store), &dst_b,
&parent_iter);
else
gtk_tree_store_iter_children (GTK_TREE_MODEL (tree_store), &dst_b,
NULL);
b = G_NODE (dst_b.user_data);
}
/* if a is NULL, b is NULL too -- we are at the end of the list
* yes and we leak memory here ...
*/
if (position)
g_return_if_fail (a);
}
/* counting nodes */
tmp = parent->children;
length = old_pos = 0;
while (tmp)
{
if (tmp == iter->user_data)
old_pos = length;
tmp = tmp->next;
length++;
}
/* remove node from list */
node = G_NODE (iter->user_data);
tmp_a = node->prev;
tmp_b = node->next;
if (tmp_a)
tmp_a->next = tmp_b;
else
parent->children = tmp_b;
if (tmp_b)
tmp_b->prev = tmp_a;
/* and reinsert the node */
if (a)
{
tmp = a->next;
a->next = node;
node->next = tmp;
node->prev = a;
}
else if (!a && !before)
{
tmp = parent->children;
node->prev = NULL;
parent->children = node;
node->next = tmp;
if (tmp)
tmp->prev = node;
handle_b = FALSE;
}
else if (!a && before)
{
if (!position)
{
node->parent = NULL;
node->next = node->prev = NULL;
/* before with sibling = NULL appends */
g_node_insert_before (parent, NULL, node);
}
else
{
node->parent = NULL;
node->next = node->prev = NULL;
/* after with sibling = NULL prepends */
g_node_insert_after (parent, NULL, node);
}
handle_b = FALSE;
}
if (handle_b)
{
if (b)
{
tmp = b->prev;
b->prev = node;
node->prev = tmp;
node->next = b;
}
else if (!(!a && before)) /* !a && before is completely handled above */
node->next = NULL;
}
/* emit signal */
if (position)
new_pos = gtk_tree_path_get_indices (pos_path)[gtk_tree_path_get_depth (pos_path)-1];
else if (before)
{
if (depth)
new_pos = gtk_tree_store_iter_n_children (GTK_TREE_MODEL (tree_store),
&parent_iter) - 1;
else
new_pos = gtk_tree_store_iter_n_children (GTK_TREE_MODEL (tree_store),
NULL) - 1;
}
else
new_pos = 0;
if (new_pos > old_pos)
{
if (before && position)
new_pos--;
}
else
{
if (!before && position)
new_pos++;
}
order = g_new (gint, length);
if (new_pos > old_pos)
{
for (i = 0; i < length; i++)
if (i < old_pos)
order[i] = i;
else if (i >= old_pos && i < new_pos)
order[i] = i + 1;
else if (i == new_pos)
order[i] = old_pos;
else
order[i] = i;
}
else
{
for (i = 0; i < length; i++)
if (i == new_pos)
order[i] = old_pos;
else if (i > new_pos && i <= old_pos)
order[i] = i - 1;
else
order[i] = i;
}
if (depth)
{
tmppath = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store),
&parent_iter);
gtk_tree_model_rows_reordered (GTK_TREE_MODEL (tree_store),
tmppath, &parent_iter, order);
}
else
{
tmppath = gtk_tree_path_new ();
gtk_tree_model_rows_reordered (GTK_TREE_MODEL (tree_store),
tmppath, NULL, order);
}
gtk_tree_path_free (tmppath);
gtk_tree_path_free (path);
if (position)
gtk_tree_path_free (pos_path);
g_free (order);
return;
free_paths_and_out:
gtk_tree_path_free (path);
gtk_tree_path_free (pos_path);
}
/**
* gtk_tree_store_move_before:
* @tree_store: A #GtkTreeStore.
* @iter: A #GtkTreeIter.
* @position: (allow-none): A #GtkTreeIter or %NULL.
*
* Moves @iter in @tree_store to the position before @position. @iter and
* @position should be in the same level. Note that this function only
* works with unsorted stores. If @position is %NULL, @iter will be
* moved to the end of the level.
*
* Since: 2.2
**/
void
gtk_tree_store_move_before (GtkTreeStore *tree_store,
GtkTreeIter *iter,
GtkTreeIter *position)
{
gtk_tree_store_move (tree_store, iter, position, TRUE);
}
/**
* gtk_tree_store_move_after:
* @tree_store: A #GtkTreeStore.
* @iter: A #GtkTreeIter.
* @position: (allow-none): A #GtkTreeIter.
*
* Moves @iter in @tree_store to the position after @position. @iter and
* @position should be in the same level. Note that this function only
* works with unsorted stores. If @position is %NULL, @iter will be moved
* to the start of the level.
*
* Since: 2.2
**/
void
gtk_tree_store_move_after (GtkTreeStore *tree_store,
GtkTreeIter *iter,
GtkTreeIter *position)
{
gtk_tree_store_move (tree_store, iter, position, FALSE);
}
/* Sorting */
static gint
gtk_tree_store_compare_func (gconstpointer a,
gconstpointer b,
gpointer user_data)
{
GtkTreeStore *tree_store = user_data;
GtkTreeStorePrivate *priv = tree_store->priv;
GNode *node_a;
GNode *node_b;
GtkTreeIterCompareFunc func;
gpointer data;
GtkTreeIter iter_a;
GtkTreeIter iter_b;
gint retval;
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;
}
node_a = ((SortTuple *) a)->node;
node_b = ((SortTuple *) b)->node;
iter_a.stamp = priv->stamp;
iter_a.user_data = node_a;
iter_b.stamp = priv->stamp;
iter_b.user_data = node_b;
retval = (* func) (GTK_TREE_MODEL (user_data), &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_tree_store_sort_helper (GtkTreeStore *tree_store,
GNode *parent,
gboolean recurse)
{
GtkTreeIter iter;
GArray *sort_array;
GNode *node;
GNode *tmp_node;
gint list_length;
gint i;
gint *new_order;
GtkTreePath *path;
node = parent->children;
if (node == NULL || node->next == NULL)
{
if (recurse && node && node->children)
gtk_tree_store_sort_helper (tree_store, node, TRUE);
return;
}
list_length = 0;
for (tmp_node = node; tmp_node; tmp_node = tmp_node->next)
list_length++;
sort_array = g_array_sized_new (FALSE, FALSE, sizeof (SortTuple), list_length);
i = 0;
for (tmp_node = node; tmp_node; tmp_node = tmp_node->next)
{
SortTuple tuple;
tuple.offset = i;
tuple.node = tmp_node;
g_array_append_val (sort_array, tuple);
i++;
}
/* Sort the array */
g_array_sort_with_data (sort_array, gtk_tree_store_compare_func, tree_store);
for (i = 0; i < list_length - 1; i++)
{
g_array_index (sort_array, SortTuple, i).node->next =
g_array_index (sort_array, SortTuple, i + 1).node;
g_array_index (sort_array, SortTuple, i + 1).node->prev =
g_array_index (sort_array, SortTuple, i).node;
}
g_array_index (sort_array, SortTuple, list_length - 1).node->next = NULL;
g_array_index (sort_array, SortTuple, 0).node->prev = NULL;
parent->children = g_array_index (sort_array, SortTuple, 0).node;
/* Let the world know about our new order */
new_order = g_new (gint, list_length);
for (i = 0; i < list_length; i++)
new_order[i] = g_array_index (sort_array, SortTuple, i).offset;
iter.stamp = tree_store->priv->stamp;
iter.user_data = parent;
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), &iter);
gtk_tree_model_rows_reordered (GTK_TREE_MODEL (tree_store),
path, &iter, new_order);
gtk_tree_path_free (path);
g_free (new_order);
g_array_free (sort_array, TRUE);
if (recurse)
{
for (tmp_node = parent->children; tmp_node; tmp_node = tmp_node->next)
{
if (tmp_node->children)
gtk_tree_store_sort_helper (tree_store, tmp_node, TRUE);
}
}
}
static void
gtk_tree_store_sort (GtkTreeStore *tree_store)
{
GtkTreeStorePrivate *priv = tree_store->priv;
if (!GTK_TREE_STORE_IS_SORTED (tree_store))
return;
if (priv->sort_column_id != -1)
{
GtkTreeDataSortHeader *header = NULL;
header = _gtk_tree_data_list_get_header (priv->sort_list,
priv->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);
}
gtk_tree_store_sort_helper (tree_store, G_NODE (priv->root), TRUE);
}
static void
gtk_tree_store_sort_iter_changed (GtkTreeStore *tree_store,
GtkTreeIter *iter,
gint column,
gboolean emit_signal)
{
GtkTreeStorePrivate *priv = tree_store->priv;
GNode *prev = NULL;
GNode *next = NULL;
GNode *node;
GtkTreePath *tmp_path;
GtkTreeIter tmp_iter;
gint cmp_a = 0;
gint cmp_b = 0;
gint i;
gint old_location;
gint new_location;
gint *new_order;
gint length;
GtkTreeIterCompareFunc func;
gpointer data;
g_return_if_fail (G_NODE (iter->user_data)->parent != NULL);
tmp_iter.stamp = priv->stamp;
if (priv->sort_column_id != -1)
{
GtkTreeDataSortHeader *header;
header = _gtk_tree_data_list_get_header (priv->sort_list,
priv->sort_column_id);
g_return_if_fail (header != NULL);
g_return_if_fail (header->func != NULL);
func = header->func;
data = header->data;
}
else
{
g_return_if_fail (priv->default_sort_func != NULL);
func = priv->default_sort_func;
data = priv->default_sort_data;
}
/* If it's the built in function, we don't sort. */
if (func == _gtk_tree_data_list_compare_func &&
priv->sort_column_id != column)
return;
old_location = 0;
node = G_NODE (iter->user_data)->parent->children;
/* First we find the iter, its prev, and its next */
while (node)
{
if (node == G_NODE (iter->user_data))
break;
old_location++;
node = node->next;
}
g_assert (node != NULL);
prev = node->prev;
next = node->next;
/* Check the common case, where we don't need to sort it moved. */
if (prev != NULL)
{
tmp_iter.user_data = prev;
cmp_a = (* func) (GTK_TREE_MODEL (tree_store), &tmp_iter, iter, data);
}
if (next != NULL)
{
tmp_iter.user_data = next;
cmp_b = (* func) (GTK_TREE_MODEL (tree_store), iter, &tmp_iter, data);
}
if (priv->order == GTK_SORT_DESCENDING)
{
if (cmp_a < 0)
cmp_a = 1;
else if (cmp_a > 0)
cmp_a = -1;
if (cmp_b < 0)
cmp_b = 1;
else if (cmp_b > 0)
cmp_b = -1;
}
if (prev == NULL && cmp_b <= 0)
return;
else if (next == NULL && cmp_a <= 0)
return;
else if (prev != NULL && next != NULL &&
cmp_a <= 0 && cmp_b <= 0)
return;
/* We actually need to sort it */
/* First, remove the old link. */
if (prev)
prev->next = next;
else
node->parent->children = next;
if (next)
next->prev = prev;
node->prev = NULL;
node->next = NULL;
/* FIXME: as an optimization, we can potentially start at next */
prev = NULL;
node = node->parent->children;
new_location = 0;
tmp_iter.user_data = node;
if (priv->order == GTK_SORT_DESCENDING)
cmp_a = (* func) (GTK_TREE_MODEL (tree_store), &tmp_iter, iter, data);
else
cmp_a = (* func) (GTK_TREE_MODEL (tree_store), iter, &tmp_iter, data);
while ((node->next) && (cmp_a > 0))
{
prev = node;
node = node->next;
new_location++;
tmp_iter.user_data = node;
if (priv->order == GTK_SORT_DESCENDING)
cmp_a = (* func) (GTK_TREE_MODEL (tree_store), &tmp_iter, iter, data);
else
cmp_a = (* func) (GTK_TREE_MODEL (tree_store), iter, &tmp_iter, data);
}
if ((!node->next) && (cmp_a > 0))
{
new_location++;
node->next = G_NODE (iter->user_data);
node->next->prev = node;
}
else if (prev)
{
prev->next = G_NODE (iter->user_data);
prev->next->prev = prev;
G_NODE (iter->user_data)->next = node;
G_NODE (iter->user_data)->next->prev = G_NODE (iter->user_data);
}
else
{
G_NODE (iter->user_data)->next = G_NODE (iter->user_data)->parent->children;
G_NODE (iter->user_data)->next->prev = G_NODE (iter->user_data);
G_NODE (iter->user_data)->parent->children = G_NODE (iter->user_data);
}
if (!emit_signal)
return;
/* Emit the reordered signal. */
length = g_node_n_children (node->parent);
new_order = g_new (int, length);
if (old_location < new_location)
for (i = 0; i < length; i++)
{
if (i < old_location ||
i > new_location)
new_order[i] = i;
else if (i >= old_location &&
i < new_location)
new_order[i] = i + 1;
else if (i == new_location)
new_order[i] = old_location;
}
else
for (i = 0; i < length; i++)
{
if (i < new_location ||
i > old_location)
new_order[i] = i;
else if (i > new_location &&
i <= old_location)
new_order[i] = i - 1;
else if (i == new_location)
new_order[i] = old_location;
}
tmp_iter.user_data = node->parent;
tmp_path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), &tmp_iter);
gtk_tree_model_rows_reordered (GTK_TREE_MODEL (tree_store),
tmp_path, &tmp_iter,
new_order);
gtk_tree_path_free (tmp_path);
g_free (new_order);
}
static gboolean
gtk_tree_store_get_sort_column_id (GtkTreeSortable *sortable,
gint *sort_column_id,
GtkSortType *order)
{
GtkTreeStore *tree_store = (GtkTreeStore *) sortable;
GtkTreeStorePrivate *priv = tree_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_tree_store_set_sort_column_id (GtkTreeSortable *sortable,
gint sort_column_id,
GtkSortType order)
{
GtkTreeStore *tree_store = (GtkTreeStore *) sortable;
GtkTreeStorePrivate *priv = tree_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_tree_store_sort (tree_store);
}
static void
gtk_tree_store_set_sort_func (GtkTreeSortable *sortable,
gint sort_column_id,
GtkTreeIterCompareFunc func,
gpointer data,
GDestroyNotify destroy)
{
GtkTreeStore *tree_store = (GtkTreeStore *) sortable;
GtkTreeStorePrivate *priv = tree_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_tree_store_sort (tree_store);
}
static void
gtk_tree_store_set_default_sort_func (GtkTreeSortable *sortable,
GtkTreeIterCompareFunc func,
gpointer data,
GDestroyNotify destroy)
{
GtkTreeStore *tree_store = (GtkTreeStore *) sortable;
GtkTreeStorePrivate *priv = tree_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_tree_store_sort (tree_store);
}
static gboolean
gtk_tree_store_has_default_sort_func (GtkTreeSortable *sortable)
{
GtkTreeStore *tree_store = (GtkTreeStore *) sortable;
return (tree_store->priv->default_sort_func != NULL);
}
static void
validate_gnode (GNode* node)
{
GNode *iter;
iter = node->children;
while (iter != NULL)
{
g_assert (iter->parent == node);
if (iter->prev)
g_assert (iter->prev->next == iter);
validate_gnode (iter);
iter = iter->next;
}
}
/* GtkBuildable custom tag implementation
*
* <columns>
* <column type="..."/>
* <column type="..."/>
* </columns>
*/
typedef struct {
GtkBuilder *builder;
GObject *object;
GSList *items;
} GSListSubParserData;
static void
tree_model_start_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **names,
const gchar **values,
gpointer user_data,
GError **error)
{
guint i;
GSListSubParserData *data = (GSListSubParserData*)user_data;
for (i = 0; names[i]; i++)
{
if (strcmp (names[i], "type") == 0)
data->items = g_slist_prepend (data->items, g_strdup (values[i]));
}
}
static void
tree_model_end_element (GMarkupParseContext *context,
const gchar *element_name,
gpointer user_data,
GError **error)
{
GSListSubParserData *data = (GSListSubParserData*)user_data;
g_assert(data->builder);
if (strcmp (element_name, "columns") == 0)
{
GSList *l;
GType *types;
int i;
GType type;
data = (GSListSubParserData*)user_data;
data->items = g_slist_reverse (data->items);
types = g_new0 (GType, g_slist_length (data->items));
for (l = data->items, 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;
}
types[i] = type;
g_free (l->data);
}
gtk_tree_store_set_column_types (GTK_TREE_STORE (data->object), i, types);
g_free (types);
}
}
static const GMarkupParser tree_model_parser =
{
tree_model_start_element,
tree_model_end_element
};
static gboolean
gtk_tree_store_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data)
{
GSListSubParserData *parser_data;
if (child)
return FALSE;
if (strcmp (tagname, "columns") == 0)
{
parser_data = g_slice_new0 (GSListSubParserData);
parser_data->builder = builder;
parser_data->items = NULL;
parser_data->object = G_OBJECT (buildable);
*parser = tree_model_parser;
*data = parser_data;
return TRUE;
}
return FALSE;
}
static void
gtk_tree_store_buildable_custom_finished (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer user_data)
{
GSListSubParserData *data;
if (strcmp (tagname, "columns"))
return;
data = (GSListSubParserData*)user_data;
g_slist_free (data->items);
g_slice_free (GSListSubParserData, data);
}
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