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gtk2/gtk/gtktreestore.c
Kristian Rietveld 3828d02568 return TRUE when value changed, so row_changed is being emitted 
Sun Nov 18 22:01:36  Kristian Rietveld  <kristian@planet.nl>

        * gtk/gtktreestore.c: return TRUE when value changed, so
        row_changed is being emitted
2001-11-18 21:00:53 +00:00

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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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "gtktreemodel.h"
#include "gtktreestore.h"
#include "gtktreedatalist.h"
#include "gtktreednd.h"
#include <string.h>
#include <gobject/gvaluecollector.h>
#define G_NODE(node) ((GNode *)node)
#define GTK_TREE_STORE_IS_SORTED(tree) (GTK_TREE_STORE (tree)->sort_column_id != -2)
#define VALID_ITER(iter, tree_store) (iter!= NULL && iter->user_data != NULL && tree_store->stamp == iter->stamp)
static void gtk_tree_store_init (GtkTreeStore *tree_store);
static void gtk_tree_store_class_init (GtkTreeStoreClass *tree_store_class);
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_finalize (GObject *object);
static guint 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_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);
/* DND interfaces */
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);
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,
GtkDestroyNotify destroy);
static void gtk_tree_store_set_default_sort_func (GtkTreeSortable *sortable,
GtkTreeIterCompareFunc func,
gpointer data,
GtkDestroyNotify destroy);
static gboolean gtk_tree_store_has_default_sort_func (GtkTreeSortable *sortable);
static void validate_gnode (GNode *node);
static GObjectClass *parent_class = NULL;
static inline void
validate_tree (GtkTreeStore *tree_store)
{
if (gtk_debug_flags & GTK_DEBUG_TREE)
{
g_assert (G_NODE (tree_store->root)->parent == NULL);
validate_gnode (G_NODE (tree_store->root));
}
}
GtkType
gtk_tree_store_get_type (void)
{
static GType tree_store_type = 0;
if (!tree_store_type)
{
static const GTypeInfo tree_store_info =
{
sizeof (GtkTreeStoreClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_tree_store_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkTreeStore),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_tree_store_init
};
static const GInterfaceInfo tree_model_info =
{
(GInterfaceInitFunc) gtk_tree_store_tree_model_init,
NULL,
NULL
};
static const GInterfaceInfo drag_source_info =
{
(GInterfaceInitFunc) gtk_tree_store_drag_source_init,
NULL,
NULL
};
static const GInterfaceInfo drag_dest_info =
{
(GInterfaceInitFunc) gtk_tree_store_drag_dest_init,
NULL,
NULL
};
static const GInterfaceInfo sortable_info =
{
(GInterfaceInitFunc) gtk_tree_store_sortable_init,
NULL,
NULL
};
tree_store_type = g_type_register_static (G_TYPE_OBJECT, "GtkTreeStore", &tree_store_info, 0);
g_type_add_interface_static (tree_store_type,
GTK_TYPE_TREE_MODEL,
&tree_model_info);
g_type_add_interface_static (tree_store_type,
GTK_TYPE_TREE_DRAG_SOURCE,
&drag_source_info);
g_type_add_interface_static (tree_store_type,
GTK_TYPE_TREE_DRAG_DEST,
&drag_dest_info);
g_type_add_interface_static (tree_store_type,
GTK_TYPE_TREE_SORTABLE,
&sortable_info);
}
return tree_store_type;
}
static void
gtk_tree_store_class_init (GtkTreeStoreClass *class)
{
GObjectClass *object_class;
parent_class = g_type_class_peek_parent (class);
object_class = (GObjectClass *) class;
object_class->finalize = gtk_tree_store_finalize;
}
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_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->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;
}
static void
gtk_tree_store_init (GtkTreeStore *tree_store)
{
tree_store->root = g_node_new (NULL);
/* While the odds are against us getting 0...
*/
do
{
tree_store->stamp = g_random_int ();
}
while (tree_store->stamp == 0);
tree_store->sort_list = NULL;
tree_store->sort_column_id = -2;
tree_store->columns_dirty = FALSE;
}
/**
* gtk_tree_store_new:
* @n_columns: number of columns in the tree store
* @Varargs: 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. 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 = GTK_TREE_STORE (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 passed to gtk_tree_store_new_with_types\n", G_STRLOC, g_type_name (type));
g_object_unref (G_OBJECT (retval));
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: an array of #GType types for the columns, from first to last
*
* Non vararg creation function. Used primarily by language bindings.
*
* Return value: a new #GtkTreeStore
**/
GtkTreeStore *
gtk_tree_store_newv (gint n_columns,
GType *types)
{
GtkTreeStore *retval;
gint i;
g_return_val_if_fail (n_columns > 0, NULL);
retval = GTK_TREE_STORE (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 passed to gtk_tree_store_new_with_types\n", G_STRLOC, g_type_name (types[i]));
g_object_unref (G_OBJECT (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: An array length n of @GTypes
*
* 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->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 passed to gtk_tree_store_set_column_types\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)
{
GType *new_columns;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
if (tree_store->n_columns == n_columns)
return;
new_columns = g_new0 (GType, n_columns);
if (tree_store->column_headers)
{
/* copy the old header orders over */
if (n_columns >= tree_store->n_columns)
memcpy (new_columns, tree_store->column_headers, tree_store->n_columns * sizeof (gchar *));
else
memcpy (new_columns, tree_store->column_headers, n_columns * sizeof (GType));
g_free (tree_store->column_headers);
}
if (tree_store->sort_list)
_gtk_tree_data_list_header_free (tree_store->sort_list);
tree_store->sort_list = _gtk_tree_data_list_header_new (n_columns, tree_store->column_headers);
tree_store->column_headers = new_columns;
tree_store->n_columns = n_columns;
}
/**
* 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)
{
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (column >=0 && column < tree_store->n_columns);
if (!_gtk_tree_data_list_check_type (type))
{
g_warning ("%s: Invalid type %s passed to gtk_tree_store_new_with_types\n", G_STRLOC, g_type_name (type));
return;
}
tree_store->column_headers[column] = type;
}
static void
node_free (GNode *node, gpointer data)
{
_gtk_tree_data_list_free (node->data, (GType*)data);
}
static void
gtk_tree_store_finalize (GObject *object)
{
GtkTreeStore *tree_store = GTK_TREE_STORE (object);
g_node_children_foreach (tree_store->root, G_TRAVERSE_LEAFS, node_free, tree_store->column_headers);
_gtk_tree_data_list_header_free (tree_store->sort_list);
g_free (tree_store->column_headers);
if (tree_store->default_sort_destroy)
{
(* tree_store->default_sort_destroy) (tree_store->default_sort_data);
tree_store->default_sort_destroy = NULL;
tree_store->default_sort_data = NULL;
}
(* 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 guint
gtk_tree_store_get_flags (GtkTreeModel *tree_model)
{
g_return_val_if_fail (GTK_IS_TREE_STORE (tree_model), 0);
return GTK_TREE_MODEL_ITERS_PERSIST;
}
static gint
gtk_tree_store_get_n_columns (GtkTreeModel *tree_model)
{
GtkTreeStore *tree_store = (GtkTreeStore *) tree_model;
g_return_val_if_fail (GTK_IS_TREE_STORE (tree_model), 0);
tree_store->columns_dirty = TRUE;
return tree_store->n_columns;
}
static GType
gtk_tree_store_get_column_type (GtkTreeModel *tree_model,
gint index)
{
GtkTreeStore *tree_store = (GtkTreeStore *) tree_model;
g_return_val_if_fail (GTK_IS_TREE_STORE (tree_model), G_TYPE_INVALID);
g_return_val_if_fail (index < GTK_TREE_STORE (tree_model)->n_columns &&
index >= 0, G_TYPE_INVALID);
tree_store->columns_dirty = TRUE;
return tree_store->column_headers[index];
}
static gboolean
gtk_tree_store_get_iter (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreePath *path)
{
GtkTreeStore *tree_store = (GtkTreeStore *) tree_model;
GtkTreeIter parent;
gint *indices;
gint depth, i;
g_return_val_if_fail (GTK_IS_TREE_STORE (tree_store), FALSE);
tree_store->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 = tree_store->stamp;
parent.user_data = tree_store->root;
if (! gtk_tree_model_iter_nth_child (tree_model, iter, &parent, indices[0]))
return FALSE;
for (i = 1; i < depth; i++)
{
parent = *iter;
if (! gtk_tree_model_iter_nth_child (tree_model, iter, &parent, indices[i]))
return FALSE;
}
return TRUE;
}
static GtkTreePath *
gtk_tree_store_get_path (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkTreePath *retval;
GNode *tmp_node;
gint i = 0;
g_return_val_if_fail (GTK_IS_TREE_STORE (tree_model), NULL);
g_return_val_if_fail (iter != NULL, NULL);
g_return_val_if_fail (iter->user_data != NULL, NULL);
g_return_val_if_fail (iter->stamp == GTK_TREE_STORE (tree_model)->stamp, NULL);
validate_tree ((GtkTreeStore*)tree_model);
if (G_NODE (iter->user_data)->parent == NULL &&
G_NODE (iter->user_data) == GTK_TREE_STORE (tree_model)->root)
return gtk_tree_path_new ();
g_assert (G_NODE (iter->user_data)->parent != NULL);
if (G_NODE (iter->user_data)->parent == G_NODE (GTK_TREE_STORE (tree_model)->root))
{
retval = gtk_tree_path_new ();
tmp_node = G_NODE (GTK_TREE_STORE (tree_model)->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)
{
GtkTreeDataList *list;
gint tmp_column = column;
g_return_if_fail (GTK_IS_TREE_STORE (tree_model));
g_return_if_fail (iter != NULL);
g_return_if_fail (column < GTK_TREE_STORE (tree_model)->n_columns);
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,
GTK_TREE_STORE (tree_model)->column_headers[column],
value);
}
else
{
/* We want to return an initialized but empty (default) value */
g_value_init (value, GTK_TREE_STORE (tree_model)->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);
if (G_NODE (iter->user_data)->next)
{
iter->user_data = G_NODE (iter->user_data)->next;
return TRUE;
}
else
return FALSE;
}
static gboolean
gtk_tree_store_iter_children (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent)
{
GNode *children;
g_return_val_if_fail (parent == NULL || parent->user_data != NULL, FALSE);
if (parent)
children = G_NODE (parent->user_data)->children;
else
children = G_NODE (GTK_TREE_STORE (tree_model)->root)->children;
if (children)
{
iter->stamp = GTK_TREE_STORE (tree_model)->stamp;
iter->user_data = children;
return TRUE;
}
else
return FALSE;
}
static gboolean
gtk_tree_store_iter_has_child (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
g_return_val_if_fail (GTK_IS_TREE_STORE (tree_model), FALSE);
g_return_val_if_fail (iter->stamp == GTK_TREE_STORE (tree_model)->stamp, FALSE);
g_return_val_if_fail (iter->user_data != NULL, 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 (GTK_IS_TREE_STORE (tree_model), 0);
g_return_val_if_fail (iter == NULL || iter->user_data != NULL, FALSE);
if (iter == NULL)
node = G_NODE (GTK_TREE_STORE (tree_model)->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)
{
GNode *parent_node;
GNode *child;
g_return_val_if_fail (GTK_IS_TREE_STORE (tree_model), FALSE);
g_return_val_if_fail (parent == NULL || parent->user_data != NULL, FALSE);
if (parent == NULL)
parent_node = GTK_TREE_STORE (tree_model)->root;
else
parent_node = parent->user_data;
child = g_node_nth_child (parent_node, n);
if (child)
{
iter->user_data = child;
iter->stamp = GTK_TREE_STORE (tree_model)->stamp;
return TRUE;
}
else
return FALSE;
}
static gboolean
gtk_tree_store_iter_parent (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *child)
{
GNode *parent;
g_return_val_if_fail (iter != NULL, FALSE);
g_return_val_if_fail (iter->user_data != NULL, FALSE);
parent = G_NODE (child->user_data)->parent;
g_assert (parent != NULL);
if (parent != GTK_TREE_STORE (tree_model)->root)
{
iter->user_data = parent;
iter->stamp = GTK_TREE_STORE (tree_model)->stamp;
return TRUE;
}
else
return FALSE;
}
/* Does not emit a signal */
static gboolean
gtk_tree_store_real_set_value (GtkTreeStore *tree_store,
GtkTreeIter *iter,
gint column,
GValue *value)
{
GtkTreeDataList *list;
GtkTreeDataList *prev;
GtkTreePath *path = NULL;
GValue real_value = {0, };
gboolean converted = FALSE;
gint orig_column = column;
gboolean retval = FALSE;
if (! g_type_is_a (G_VALUE_TYPE (value), tree_store->column_headers[column]))
{
if (! (g_value_type_compatible (G_VALUE_TYPE (value), tree_store->column_headers[column]) &&
g_value_type_compatible (tree_store->column_headers[column], G_VALUE_TYPE (value))))
{
g_warning ("%s: Unable to convert from %s to %s\n",
G_STRLOC,
g_type_name (G_VALUE_TYPE (value)),
g_type_name (tree_store->column_headers[column]));
return retval;
}
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 (tree_store->column_headers[column]));
g_value_unset (&real_value);
return retval;
}
converted = TRUE;
}
prev = list = G_NODE (iter->user_data)->data;
path = gtk_tree_store_get_path (GTK_TREE_MODEL (tree_store), iter);
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;
gtk_tree_path_free (path);
if (converted)
g_value_unset (&real_value);
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;
gtk_tree_path_free (path);
if (converted)
g_value_unset (&real_value);
if (GTK_TREE_STORE_IS_SORTED (tree_store))
gtk_tree_store_sort_iter_changed (tree_store, iter, orig_column);
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->n_columns);
g_return_if_fail (G_IS_VALUE (value));
if (gtk_tree_store_real_set_value (tree_store, iter, column, value))
{
GtkTreePath *path;
path = gtk_tree_model_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: va_list of column/value pairs
*
* See gtk_tree_store_set(); this version takes a va_list for
* use by language bindings.
*
**/
void
gtk_tree_store_set_valist (GtkTreeStore *tree_store,
GtkTreeIter *iter,
va_list var_args)
{
gint column;
gboolean emit_signal = FALSE;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (VALID_ITER (iter, tree_store));
column = va_arg (var_args, gint);
while (column != -1)
{
GValue value = { 0, };
gchar *error = NULL;
if (column >= tree_store->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_init (&value, tree_store->column_headers[column]);
G_VALUE_COLLECT (&value, var_args, 0, &error);
if (error)
{
g_warning ("%s: %s", G_STRLOC, error);
g_free (error);
/* we purposely leak the value here, it might not be
* in a sane state if an error condition occoured
*/
break;
}
emit_signal = gtk_tree_store_real_set_value (tree_store,
iter,
column,
&value) || emit_signal;
g_value_unset (&value);
column = va_arg (var_args, gint);
}
if (emit_signal)
{
GtkTreePath *path;
path = gtk_tree_model_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
* @Varargs: 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>.
**/
void
gtk_tree_store_set (GtkTreeStore *tree_store,
GtkTreeIter *iter,
...)
{
va_list var_args;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (VALID_ITER (iter, tree_store));
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.
**/
void
gtk_tree_store_remove (GtkTreeStore *tree_store,
GtkTreeIter *iter)
{
GtkTreePath *path;
GtkTreeIter new_iter = {0,};
GNode *parent;
GNode *next_node;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
g_return_if_fail (VALID_ITER (iter, tree_store));
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)
_gtk_tree_data_list_free ((GtkTreeDataList *) G_NODE (iter->user_data)->data,
tree_store->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 (tree_store->root))
{
/* child_toggled */
if (parent->children == NULL)
{
gtk_tree_path_up (path);
new_iter.stamp = tree_store->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 = tree_store->stamp;
iter->user_data = next_node;
}
else
{
iter->stamp = 0;
iter->user_data = NULL;
}
}
/**
* gtk_tree_store_insert:
* @tree_store: A #GtkListStore
* @iter: An unset #GtkTreeIter to set to the new row
* @parent: 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 before this function is called. To
* fill in values, you need to call gtk_list_store_set() or
* gtk_list_store_set_value().
*
**/
void
gtk_tree_store_insert (GtkTreeStore *tree_store,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint position)
{
GtkTreePath *path;
GNode *parent_node;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
if (parent)
g_return_if_fail (VALID_ITER (parent, tree_store));
if (parent)
parent_node = parent->user_data;
else
parent_node = tree_store->root;
tree_store->columns_dirty = TRUE;
iter->stamp = tree_store->stamp;
iter->user_data = g_node_new (NULL);
g_node_insert (parent_node, position, 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);
gtk_tree_path_free (path);
validate_tree ((GtkTreeStore*)tree_store);
}
/**
* gtk_tree_store_insert_before:
* @tree_store: A #GtkTreeStore
* @iter: An unset #GtkTreeIter to set to the new row
* @parent: A valid #GtkTreeIter, or %NULL
* @sibling: A valid #GtkTreeIter, or %NULL
*
* Inserts a new row before @sibling. If @sibling is %NULL, then the row will
* be appended to the beginning of the @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)
{
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));
tree_store->columns_dirty = TRUE;
new_node = g_node_new (NULL);
if (parent == NULL && sibling == NULL)
parent_node = tree_store->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);
}
g_node_insert_before (parent_node,
sibling ? G_NODE (sibling->user_data) : NULL,
new_node);
iter->stamp = tree_store->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);
gtk_tree_path_free (path);
validate_tree ((GtkTreeStore*)tree_store);
}
/**
* gtk_tree_store_insert_after:
* @tree_store: A #GtkTreeStore
* @iter: An unset #GtkTreeIter to set to the new row
* @parent: A valid #GtkTreeIter, or %NULL
* @sibling: 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 @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)
{
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));
tree_store->columns_dirty = TRUE;
new_node = g_node_new (NULL);
if (parent == NULL && sibling == NULL)
parent_node = tree_store->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);
}
g_node_insert_after (parent_node,
sibling ? G_NODE (sibling->user_data) : NULL,
new_node);
iter->stamp = tree_store->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);
gtk_tree_path_free (path);
validate_tree ((GtkTreeStore*)tree_store);
}
/**
* gtk_tree_store_prepend:
* @tree_store: A #GtkTreeStore
* @iter: An unset #GtkTreeIter to set to the prepended row
* @parent: 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)
{
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));
tree_store->columns_dirty = TRUE;
if (parent == NULL)
parent_node = tree_store->root;
else
parent_node = parent->user_data;
if (parent_node->children == NULL)
{
GtkTreePath *path;
iter->stamp = tree_store->stamp;
iter->user_data = g_node_new (NULL);
g_node_prepend (parent_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 != tree_store->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 ((GtkTreeStore*)tree_store);
}
/**
* gtk_tree_store_append:
* @tree_store: A #GtkTreeStore
* @iter: An unset #GtkTreeIter to set to the appended row
* @parent: 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)
{
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 = tree_store->root;
else
parent_node = parent->user_data;
tree_store->columns_dirty = TRUE;
if (parent_node->children == NULL)
{
GtkTreePath *path;
iter->stamp = tree_store->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 != tree_store->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 ((GtkTreeStore*)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;
}
/**
* gtk_tree_store_clear:
* @tree_store: @ #GtkTreeStore
*
* Removes all rows from @tree_store
**/
void
gtk_tree_store_clear (GtkTreeStore *tree_store)
{
GtkTreeIter iter;
g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
while (G_NODE (tree_store->root)->children)
{
iter.stamp = tree_store->stamp;
iter.user_data = G_NODE (tree_store->root)->children;
gtk_tree_store_remove (tree_store, &iter);
}
}
/* DND */
static gboolean
gtk_tree_store_drag_data_delete (GtkTreeDragSource *drag_source,
GtkTreePath *path)
{
GtkTreeIter iter;
g_return_val_if_fail (GTK_IS_TREE_STORE (drag_source), FALSE);
if (gtk_tree_model_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)
{
g_return_val_if_fail (GTK_IS_TREE_STORE (drag_source), FALSE);
/* 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->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_model_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_model_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;
g_return_val_if_fail (GTK_IS_TREE_STORE (drag_dest), 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_model_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_model_get_iter (tree_model,
&dest_parent,
parent);
dest_parent_p = &dest_parent;
}
gtk_tree_path_free (parent);
parent = NULL;
gtk_tree_store_prepend (GTK_TREE_STORE (tree_model),
&dest_iter,
dest_parent_p);
retval = TRUE;
}
else
{
if (gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_model),
&dest_iter,
prev))
{
GtkTreeIter tmp_iter = dest_iter;
gtk_tree_store_insert_after (GTK_TREE_STORE (tree_model),
&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;
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_model_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 */
typedef struct _SortTuple
{
gint offset;
GNode *node;
} SortTuple;
static gint
gtk_tree_store_compare_func (gconstpointer a,
gconstpointer b,
gpointer user_data)
{
GtkTreeStore *tree_store = user_data;
GNode *node_a;
GNode *node_b;
GtkTreeIterCompareFunc func;
gpointer data;
GtkTreeIter iter_a;
GtkTreeIter iter_b;
gint retval;
if (tree_store->sort_column_id != -1)
{
GtkTreeDataSortHeader *header;
header = _gtk_tree_data_list_get_header (tree_store->sort_list,
tree_store->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 (tree_store->default_sort_func != NULL, 0);
func = tree_store->default_sort_func;
data = tree_store->default_sort_data;
}
node_a = ((SortTuple *) a)->node;
node_b = ((SortTuple *) b)->node;
iter_a.stamp = tree_store->stamp;
iter_a.user_data = node_a;
iter_b.stamp = tree_store->stamp;
iter_b.user_data = node_b;
retval = (* func) (GTK_TREE_MODEL (user_data), &iter_a, &iter_b, data);
if (tree_store->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)
return;
g_assert (GTK_TREE_STORE_IS_SORTED (tree_store));
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++;
}
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->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)
{
if (tree_store->sort_column_id != -1)
{
GtkTreeDataSortHeader *header = NULL;
header = _gtk_tree_data_list_get_header (tree_store->sort_list, tree_store->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 (tree_store->default_sort_func != NULL);
}
gtk_tree_store_sort_helper (tree_store, G_NODE (tree_store->root), TRUE);
}
static void
gtk_tree_store_sort_iter_changed (GtkTreeStore *tree_store,
GtkTreeIter *iter,
gint column)
{
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 = tree_store->stamp;
if (tree_store->sort_column_id != -1)
{
GtkTreeDataSortHeader *header;
header = _gtk_tree_data_list_get_header (tree_store->sort_list,
tree_store->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 (tree_store->default_sort_func != NULL);
func = tree_store->default_sort_func;
data = tree_store->default_sort_data;
}
/* If it's the built in function, we don't sort. */
if (func == gtk_tree_data_list_compare_func &&
tree_store->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 (tree_store->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 (tree_store->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 (tree_store->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))
{
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)->parent->children = G_NODE (iter->user_data);
}
/* 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;
g_return_val_if_fail (GTK_IS_TREE_STORE (sortable), FALSE);
if (tree_store->sort_column_id == -1)
return FALSE;
if (sort_column_id)
* sort_column_id = tree_store->sort_column_id;
if (order)
* order = tree_store->order;
return TRUE;
}
static void
gtk_tree_store_set_sort_column_id (GtkTreeSortable *sortable,
gint sort_column_id,
GtkSortType order)
{
GtkTreeStore *tree_store = (GtkTreeStore *) sortable;
g_return_if_fail (GTK_IS_TREE_STORE (sortable));
if ((tree_store->sort_column_id == sort_column_id) &&
(tree_store->order == order))
return;
if (sort_column_id != -1)
{
GtkTreeDataSortHeader *header = NULL;
header = _gtk_tree_data_list_get_header (tree_store->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 (tree_store->default_sort_func != NULL);
}
tree_store->sort_column_id = sort_column_id;
tree_store->order = order;
gtk_tree_store_sort (tree_store);
gtk_tree_sortable_sort_column_changed (sortable);
}
static void
gtk_tree_store_set_sort_func (GtkTreeSortable *sortable,
gint sort_column_id,
GtkTreeIterCompareFunc func,
gpointer data,
GtkDestroyNotify destroy)
{
GtkTreeStore *tree_store = (GtkTreeStore *) sortable;
GtkTreeDataSortHeader *header = NULL;
GList *list;
g_return_if_fail (GTK_IS_TREE_STORE (sortable));
g_return_if_fail (func != NULL);
for (list = tree_store->sort_list; list; list = list->next)
{
header = (GtkTreeDataSortHeader*) list->data;
if (header->sort_column_id == sort_column_id)
break;
}
if (header == NULL)
{
header = g_new0 (GtkTreeDataSortHeader, 1);
header->sort_column_id = sort_column_id;
tree_store->sort_list = g_list_append (tree_store->sort_list, header);
}
if (header->destroy)
(* header->destroy) (header->data);
header->func = func;
header->data = data;
header->destroy = destroy;
}
static void
gtk_tree_store_set_default_sort_func (GtkTreeSortable *sortable,
GtkTreeIterCompareFunc func,
gpointer data,
GtkDestroyNotify destroy)
{
GtkTreeStore *tree_store = (GtkTreeStore *) sortable;
g_return_if_fail (GTK_IS_TREE_STORE (sortable));
if (tree_store->default_sort_destroy)
(* tree_store->default_sort_destroy) (tree_store->default_sort_data);
tree_store->default_sort_func = func;
tree_store->default_sort_data = data;
tree_store->default_sort_destroy = destroy;
}
static gboolean
gtk_tree_store_has_default_sort_func (GtkTreeSortable *sortable)
{
GtkTreeStore *tree_store = (GtkTreeStore *) sortable;
g_return_val_if_fail (GTK_IS_TREE_STORE (sortable), FALSE);
return (tree_store->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;
}
}
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