2 * Copyright (C) 2000 Red Hat, Inc., Jonathan Blandford <jrb@redhat.com>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
20 #include "gtktreemodel.h"
21 #include "gtktreestore.h"
22 #include "gtktreedatalist.h"
23 #include "gtktreednd.h"
24 #include "gtksignal.h"
26 #include <gobject/gvaluecollector.h>
28 #define G_NODE(node) ((GNode *)node)
38 static guint tree_store_signals[LAST_SIGNAL] = { 0 };
41 static void gtk_tree_store_init (GtkTreeStore *tree_store);
42 static void gtk_tree_store_class_init (GtkTreeStoreClass *tree_store_class);
43 static void gtk_tree_store_tree_model_init (GtkTreeModelIface *iface);
44 static void gtk_tree_store_drag_source_init(GtkTreeDragSourceIface *iface);
45 static void gtk_tree_store_drag_dest_init (GtkTreeDragDestIface *iface);
46 static guint gtk_tree_store_get_flags (GtkTreeModel *tree_model);
47 static gint gtk_tree_store_get_n_columns (GtkTreeModel *tree_model);
48 static GType gtk_tree_store_get_column_type (GtkTreeModel *tree_model,
50 static GtkTreePath *gtk_tree_store_get_path (GtkTreeModel *tree_model,
52 static void gtk_tree_store_get_value (GtkTreeModel *tree_model,
56 static gboolean gtk_tree_store_iter_next (GtkTreeModel *tree_model,
58 static gboolean gtk_tree_store_iter_children (GtkTreeModel *tree_model,
61 static gboolean gtk_tree_store_iter_has_child (GtkTreeModel *tree_model,
63 static gint gtk_tree_store_iter_n_children (GtkTreeModel *tree_model,
65 static gboolean gtk_tree_store_iter_nth_child (GtkTreeModel *tree_model,
69 static gboolean gtk_tree_store_iter_parent (GtkTreeModel *tree_model,
74 static gboolean gtk_tree_store_drag_data_delete (GtkTreeDragSource *drag_source,
76 static gboolean gtk_tree_store_drag_data_get (GtkTreeDragSource *drag_source,
78 GtkSelectionData *selection_data);
79 static gboolean gtk_tree_store_drag_data_received (GtkTreeDragDest *drag_dest,
81 GtkSelectionData *selection_data);
82 static gboolean gtk_tree_store_row_drop_possible (GtkTreeDragDest *drag_dest,
83 GtkTreeModel *src_model,
84 GtkTreePath *src_path,
85 GtkTreePath *dest_path);
87 static void validate_gnode (GNode *node);
90 validate_tree (GtkTreeStore *tree_store)
92 if (gtk_debug_flags & GTK_DEBUG_TREE)
94 g_assert (G_NODE (tree_store->root)->parent == NULL);
96 validate_gnode (G_NODE (tree_store->root));
101 gtk_tree_store_get_type (void)
103 static GtkType tree_store_type = 0;
105 if (!tree_store_type)
107 static const GTypeInfo tree_store_info =
109 sizeof (GtkTreeStoreClass),
110 NULL, /* base_init */
111 NULL, /* base_finalize */
112 (GClassInitFunc) gtk_tree_store_class_init,
113 NULL, /* class_finalize */
114 NULL, /* class_data */
115 sizeof (GtkTreeStore),
117 (GInstanceInitFunc) gtk_tree_store_init
120 static const GInterfaceInfo tree_model_info =
122 (GInterfaceInitFunc) gtk_tree_store_tree_model_init,
127 static const GInterfaceInfo drag_source_info =
129 (GInterfaceInitFunc) gtk_tree_store_drag_source_init,
134 static const GInterfaceInfo drag_dest_info =
136 (GInterfaceInitFunc) gtk_tree_store_drag_dest_init,
141 tree_store_type = g_type_register_static (GTK_TYPE_OBJECT, "GtkTreeStore", &tree_store_info, 0);
143 g_type_add_interface_static (tree_store_type,
147 g_type_add_interface_static (tree_store_type,
148 GTK_TYPE_TREE_DRAG_SOURCE,
150 g_type_add_interface_static (tree_store_type,
151 GTK_TYPE_TREE_DRAG_DEST,
157 return tree_store_type;
161 gtk_tree_store_class_init (GtkTreeStoreClass *tree_store_class)
163 GtkObjectClass *object_class;
165 object_class = (GtkObjectClass *) tree_store_class;
167 tree_store_signals[CHANGED] =
168 gtk_signal_new ("changed",
170 GTK_CLASS_TYPE (object_class),
171 GTK_SIGNAL_OFFSET (GtkTreeStoreClass, changed),
172 gtk_marshal_VOID__BOXED_BOXED,
176 tree_store_signals[INSERTED] =
177 gtk_signal_new ("inserted",
179 GTK_CLASS_TYPE (object_class),
180 GTK_SIGNAL_OFFSET (GtkTreeStoreClass, inserted),
181 gtk_marshal_VOID__BOXED_BOXED,
185 tree_store_signals[CHILD_TOGGLED] =
186 gtk_signal_new ("child_toggled",
188 GTK_CLASS_TYPE (object_class),
189 GTK_SIGNAL_OFFSET (GtkTreeStoreClass, child_toggled),
190 gtk_marshal_VOID__BOXED_BOXED,
194 tree_store_signals[DELETED] =
195 gtk_signal_new ("deleted",
197 GTK_CLASS_TYPE (object_class),
198 GTK_SIGNAL_OFFSET (GtkTreeStoreClass, deleted),
199 gtk_marshal_VOID__BOXED,
205 gtk_tree_store_tree_model_init (GtkTreeModelIface *iface)
207 iface->get_flags = gtk_tree_store_get_flags;
208 iface->get_n_columns = gtk_tree_store_get_n_columns;
209 iface->get_column_type = gtk_tree_store_get_column_type;
210 iface->get_path = gtk_tree_store_get_path;
211 iface->get_value = gtk_tree_store_get_value;
212 iface->iter_next = gtk_tree_store_iter_next;
213 iface->iter_children = gtk_tree_store_iter_children;
214 iface->iter_has_child = gtk_tree_store_iter_has_child;
215 iface->iter_n_children = gtk_tree_store_iter_n_children;
216 iface->iter_nth_child = gtk_tree_store_iter_nth_child;
217 iface->iter_parent = gtk_tree_store_iter_parent;
221 gtk_tree_store_drag_source_init (GtkTreeDragSourceIface *iface)
223 iface->drag_data_delete = gtk_tree_store_drag_data_delete;
224 iface->drag_data_get = gtk_tree_store_drag_data_get;
228 gtk_tree_store_drag_dest_init (GtkTreeDragDestIface *iface)
230 iface->drag_data_received = gtk_tree_store_drag_data_received;
231 iface->row_drop_possible = gtk_tree_store_row_drop_possible;
235 gtk_tree_store_init (GtkTreeStore *tree_store)
237 tree_store->root = g_node_new (NULL);
238 tree_store->stamp = g_random_int ();
242 gtk_tree_store_new (void)
244 return GTK_TREE_STORE (gtk_type_new (gtk_tree_store_get_type ()));
248 gtk_tree_store_new_with_types (gint n_columns,
251 GtkTreeStore *retval;
255 g_return_val_if_fail (n_columns > 0, NULL);
257 retval = gtk_tree_store_new ();
258 gtk_tree_store_set_n_columns (retval, n_columns);
260 va_start (args, n_columns);
262 for (i = 0; i < n_columns; i++)
263 gtk_tree_store_set_column_type (retval, i, va_arg (args, GType));
271 gtk_tree_store_set_n_columns (GtkTreeStore *tree_store,
276 g_return_if_fail (tree_store != NULL);
277 g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
279 if (tree_store->n_columns == n_columns)
282 new_columns = g_new0 (GType, n_columns);
283 if (tree_store->column_headers)
285 /* copy the old header orders over */
286 if (n_columns >= tree_store->n_columns)
287 memcpy (new_columns, tree_store->column_headers, tree_store->n_columns * sizeof (gchar *));
289 memcpy (new_columns, tree_store->column_headers, n_columns * sizeof (GType));
291 g_free (tree_store->column_headers);
294 tree_store->column_headers = new_columns;
295 tree_store->n_columns = n_columns;
299 gtk_tree_store_set_column_type (GtkTreeStore *tree_store,
303 g_return_if_fail (tree_store != NULL);
304 g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
305 g_return_if_fail (column >=0 && column < tree_store->n_columns);
307 tree_store->column_headers[column] = type;
310 /* fulfill the GtkTreeModel requirements */
311 /* NOTE: GtkTreeStore::root is a GNode, that acts as the parent node. However,
312 * it is not visible to the tree or to the user., and the path "0" refers to the
313 * first child of GtkTreeStore::root.
318 gtk_tree_store_get_flags (GtkTreeModel *tree_model)
320 g_return_val_if_fail (GTK_IS_TREE_STORE (tree_model), 0);
322 return GTK_TREE_MODEL_ITERS_PERSIST;
326 gtk_tree_store_get_n_columns (GtkTreeModel *tree_model)
328 g_return_val_if_fail (GTK_IS_TREE_STORE (tree_model), 0);
330 return GTK_TREE_STORE (tree_model)->n_columns;
334 gtk_tree_store_get_column_type (GtkTreeModel *tree_model,
337 g_return_val_if_fail (GTK_IS_TREE_STORE (tree_model), G_TYPE_INVALID);
338 g_return_val_if_fail (index < GTK_TREE_STORE (tree_model)->n_columns &&
339 index >= 0, G_TYPE_INVALID);
341 return GTK_TREE_STORE (tree_model)->column_headers[index];
345 gtk_tree_store_get_path (GtkTreeModel *tree_model,
352 g_return_val_if_fail (tree_model != NULL, NULL);
353 g_return_val_if_fail (GTK_IS_TREE_STORE (tree_model), NULL);
354 g_return_val_if_fail (iter != NULL, NULL);
355 g_return_val_if_fail (iter->user_data != NULL, NULL);
357 validate_tree ((GtkTreeStore*)tree_model);
359 g_assert (G_NODE (iter->user_data)->parent != NULL);
361 if (G_NODE (iter->user_data)->parent == G_NODE (GTK_TREE_STORE (tree_model)->root))
363 retval = gtk_tree_path_new ();
364 tmp_node = G_NODE (GTK_TREE_STORE (tree_model)->root)->children;
368 GtkTreeIter tmp_iter = *iter;
370 tmp_iter.user_data = G_NODE (iter->user_data)->parent;
372 retval = gtk_tree_store_get_path (tree_model,
374 tmp_node = G_NODE (iter->user_data)->parent->children;
380 if (tmp_node == NULL)
382 gtk_tree_path_free (retval);
386 for (; tmp_node; tmp_node = tmp_node->next)
388 if (tmp_node == G_NODE (iter->user_data))
393 if (tmp_node == NULL)
395 /* We couldn't find node, meaning it's prolly not ours */
396 /* Perhaps I should do a g_return_if_fail here. */
397 gtk_tree_path_free (retval);
401 gtk_tree_path_append_index (retval, i);
408 gtk_tree_store_get_value (GtkTreeModel *tree_model,
413 GtkTreeDataList *list;
414 gint tmp_column = column;
416 g_return_if_fail (tree_model != NULL);
417 g_return_if_fail (GTK_IS_TREE_STORE (tree_model));
418 g_return_if_fail (iter != NULL);
419 g_return_if_fail (column < GTK_TREE_STORE (tree_model)->n_columns);
421 list = G_NODE (iter->user_data)->data;
423 while (tmp_column-- > 0 && list)
428 _gtk_tree_data_list_node_to_value (list,
429 GTK_TREE_STORE (tree_model)->column_headers[column],
434 /* We want to return an initialized but empty (default) value */
435 g_value_init (value, GTK_TREE_STORE (tree_model)->column_headers[column]);
440 gtk_tree_store_iter_next (GtkTreeModel *tree_model,
443 g_return_val_if_fail (iter->user_data != NULL, FALSE);
445 if (G_NODE (iter->user_data)->next)
447 iter->user_data = G_NODE (iter->user_data)->next;
455 gtk_tree_store_iter_children (GtkTreeModel *tree_model,
461 g_return_val_if_fail (parent == NULL || parent->user_data != NULL, FALSE);
464 children = G_NODE (parent->user_data)->children;
466 children = G_NODE (GTK_TREE_STORE (tree_model)->root)->children;
470 iter->stamp = GTK_TREE_STORE (tree_model)->stamp;
471 iter->user_data = children;
479 gtk_tree_store_iter_has_child (GtkTreeModel *tree_model,
482 g_return_val_if_fail (tree_model != NULL, FALSE);
483 g_return_val_if_fail (GTK_IS_TREE_STORE (tree_model), FALSE);
484 g_return_val_if_fail (iter != NULL, FALSE);
485 g_return_val_if_fail (iter->user_data != NULL, FALSE);
487 return G_NODE (iter->user_data)->children != NULL;
491 gtk_tree_store_iter_n_children (GtkTreeModel *tree_model,
497 g_return_val_if_fail (tree_model != NULL, 0);
498 g_return_val_if_fail (GTK_IS_TREE_STORE (tree_model), 0);
499 g_return_val_if_fail (iter != NULL, FALSE);
500 g_return_val_if_fail (iter->user_data != NULL, FALSE);
503 node = G_NODE (GTK_TREE_STORE (tree_model)->root)->children;
505 node = G_NODE (iter->user_data)->children;
517 gtk_tree_store_iter_nth_child (GtkTreeModel *tree_model,
525 g_return_val_if_fail (tree_model != NULL, FALSE);
526 g_return_val_if_fail (GTK_IS_TREE_STORE (tree_model), FALSE);
527 g_return_val_if_fail (parent == NULL || parent->user_data != NULL, FALSE);
530 parent_node = GTK_TREE_STORE (tree_model)->root;
532 parent_node = parent->user_data;
534 child = g_node_nth_child (parent_node, n);
538 iter->user_data = child;
539 iter->stamp = GTK_TREE_STORE (tree_model)->stamp;
547 gtk_tree_store_iter_parent (GtkTreeModel *tree_model,
553 g_return_val_if_fail (iter != NULL, FALSE);
554 g_return_val_if_fail (iter->user_data != NULL, FALSE);
556 parent = G_NODE (child->user_data)->parent;
558 g_assert (parent != NULL);
560 if (parent != GTK_TREE_STORE (tree_model)->root)
562 iter->user_data = parent;
563 iter->stamp = GTK_TREE_STORE (tree_model)->stamp;
571 * This is a somewhat inelegant function that does a lot of list
572 * manipulations on it's own.
575 gtk_tree_store_set_cell (GtkTreeStore *tree_store,
580 GtkTreeDataList *list;
581 GtkTreeDataList *prev;
583 g_return_if_fail (tree_store != NULL);
584 g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
585 g_return_if_fail (column >= 0 && column < tree_store->n_columns);
587 prev = list = G_NODE (iter->user_data)->data;
593 _gtk_tree_data_list_value_to_node (list, value);
594 gtk_signal_emit_by_name (GTK_OBJECT (tree_store),
605 if (G_NODE (iter->user_data)->data == NULL)
607 G_NODE (iter->user_data)->data = list = _gtk_tree_data_list_alloc ();
612 list = prev->next = _gtk_tree_data_list_alloc ();
618 list->next = _gtk_tree_data_list_alloc ();
623 _gtk_tree_data_list_value_to_node (list, value);
624 gtk_signal_emit_by_name (GTK_OBJECT (tree_store),
630 * gtk_tree_store_set_valist:
631 * @tree_store: a #GtkTreeStore
632 * @iter: row to set data for
633 * @var_args: va_list of column/value pairs
635 * See gtk_tree_store_set(); this version takes a va_list for
636 * use by language bindings.
640 gtk_tree_store_set_valist (GtkTreeStore *tree_store,
646 g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
648 column = va_arg (var_args, gint);
652 GValue value = { 0, };
655 if (column >= tree_store->n_columns)
657 g_warning ("%s: Invalid column number %d added to iter (remember to end your list of columns with a -1)", G_STRLOC, column);
660 g_value_init (&value, tree_store->column_headers[column]);
662 G_VALUE_COLLECT (&value, var_args, 0, &error);
665 g_warning ("%s: %s", G_STRLOC, error);
668 /* we purposely leak the value here, it might not be
669 * in a sane state if an error condition occoured
674 gtk_tree_store_set_cell (tree_store,
679 g_value_unset (&value);
681 column = va_arg (var_args, gint);
686 * gtk_tree_store_set:
687 * @tree_store: a #GtkTreeStore
688 * @iter: row iterator
689 * @Varargs: pairs of column number and value, terminated with -1
691 * Sets the value of one or more cells in the row referenced by @iter.
692 * The variable argument list should contain integer column numbers,
693 * each column number followed by the value to be set. For example,
694 * The list is terminated by a -1. For example, to set column 0 with type
695 * %G_TYPE_STRING to "Foo", you would write gtk_tree_store_set (store, iter,
699 gtk_tree_store_set (GtkTreeStore *tree_store,
705 g_return_if_fail (GTK_IS_TREE_STORE (tree_store));
707 va_start (var_args, iter);
708 gtk_tree_store_set_valist (tree_store, iter, var_args);
713 gtk_tree_store_remove (GtkTreeStore *model,
720 g_return_if_fail (model != NULL);
721 g_return_if_fail (GTK_IS_TREE_STORE (model));
723 parent = G_NODE (iter->user_data)->parent;
725 g_assert (parent != NULL);
727 if (G_NODE (iter->user_data)->data)
728 _gtk_tree_data_list_free ((GtkTreeDataList *) G_NODE (iter->user_data)->data,
729 model->column_headers);
731 path = gtk_tree_store_get_path (GTK_TREE_MODEL (model), iter);
732 g_node_destroy (G_NODE (iter->user_data));
735 gtk_signal_emit_by_name (GTK_OBJECT (model),
738 if (parent != G_NODE (model->root) && parent->children == NULL)
740 gtk_tree_path_up (path);
742 gtk_signal_emit_by_name (GTK_OBJECT (model),
747 gtk_tree_path_free (path);
751 gtk_tree_store_insert (GtkTreeStore *model,
759 g_return_if_fail (model != NULL);
760 g_return_if_fail (GTK_IS_TREE_STORE (model));
763 parent_node = parent->user_data;
765 parent_node = model->root;
767 iter->stamp = model->stamp;
768 iter->user_data = g_node_new (NULL);
769 g_node_insert (parent_node, position, G_NODE (iter->user_data));
771 path = gtk_tree_store_get_path (GTK_TREE_MODEL (model), iter);
772 gtk_signal_emit_by_name (GTK_OBJECT (model),
775 gtk_tree_path_free (path);
777 validate_tree ((GtkTreeStore*)model);
781 gtk_tree_store_insert_before (GtkTreeStore *model,
784 GtkTreeIter *sibling)
787 GNode *parent_node = NULL;
790 g_return_if_fail (model != NULL);
791 g_return_if_fail (GTK_IS_TREE_STORE (model));
792 g_return_if_fail (iter != NULL);
794 new_node = g_node_new (NULL);
796 if (parent == NULL && sibling == NULL)
797 parent_node = model->root;
798 else if (parent == NULL)
799 parent_node = G_NODE (sibling->user_data)->parent;
800 else if (sibling == NULL)
801 parent_node = G_NODE (parent->user_data);
804 g_return_if_fail (G_NODE (sibling->user_data)->parent ==
805 G_NODE (parent->user_data));
806 parent_node = G_NODE (parent->user_data);
809 g_node_insert_before (parent_node,
810 sibling ? G_NODE (sibling->user_data) : NULL,
813 iter->stamp = model->stamp;
814 iter->user_data = new_node;
816 path = gtk_tree_store_get_path (GTK_TREE_MODEL (model), iter);
817 gtk_signal_emit_by_name (GTK_OBJECT (model),
820 gtk_tree_path_free (path);
822 validate_tree ((GtkTreeStore*)model);
826 gtk_tree_store_insert_after (GtkTreeStore *model,
829 GtkTreeIter *sibling)
835 g_return_if_fail (model != NULL);
836 g_return_if_fail (GTK_IS_TREE_STORE (model));
837 g_return_if_fail (iter != NULL);
839 new_node = g_node_new (NULL);
841 if (parent == NULL && sibling == NULL)
842 parent_node = model->root;
843 else if (parent == NULL)
844 parent_node = G_NODE (sibling->user_data)->parent;
845 else if (sibling == NULL)
846 parent_node = G_NODE (parent->user_data);
849 g_return_if_fail (G_NODE (sibling->user_data)->parent ==
850 G_NODE (parent->user_data));
851 parent_node = G_NODE (parent->user_data);
855 g_node_insert_after (parent_node,
856 sibling ? G_NODE (sibling->user_data) : NULL,
859 iter->stamp = model->stamp;
860 iter->user_data = new_node;
862 path = gtk_tree_store_get_path (GTK_TREE_MODEL (model), iter);
863 gtk_signal_emit_by_name (GTK_OBJECT (model),
866 gtk_tree_path_free (path);
868 validate_tree ((GtkTreeStore*)model);
872 gtk_tree_store_prepend (GtkTreeStore *model,
878 g_return_if_fail (model != NULL);
879 g_return_if_fail (GTK_IS_TREE_STORE (model));
880 g_return_if_fail (iter != NULL);
883 parent_node = model->root;
885 parent_node = parent->user_data;
887 if (parent_node->children == NULL)
891 iter->stamp = model->stamp;
892 iter->user_data = g_node_new (NULL);
894 g_node_prepend (parent_node, iter->user_data);
896 if (parent_node != model->root)
898 path = gtk_tree_store_get_path (GTK_TREE_MODEL (model), parent);
899 gtk_signal_emit_by_name (GTK_OBJECT (model),
903 gtk_tree_path_append_index (path, 0);
907 path = gtk_tree_store_get_path (GTK_TREE_MODEL (model), iter);
909 gtk_signal_emit_by_name (GTK_OBJECT (model),
913 gtk_tree_path_free (path);
917 gtk_tree_store_insert_after (model, iter, parent, NULL);
920 validate_tree ((GtkTreeStore*)model);
924 gtk_tree_store_append (GtkTreeStore *model,
930 g_return_if_fail (model != NULL);
931 g_return_if_fail (GTK_IS_TREE_STORE (model));
932 g_return_if_fail (iter != NULL);
935 parent_node = model->root;
937 parent_node = parent->user_data;
939 if (parent_node->children == NULL)
943 iter->stamp = model->stamp;
944 iter->user_data = g_node_new (NULL);
946 g_node_append (parent_node, G_NODE (iter->user_data));
948 if (parent_node != model->root)
950 path = gtk_tree_store_get_path (GTK_TREE_MODEL (model), parent);
951 gtk_signal_emit_by_name (GTK_OBJECT (model),
955 gtk_tree_path_append_index (path, 0);
959 path = gtk_tree_store_get_path (GTK_TREE_MODEL (model), iter);
962 gtk_signal_emit_by_name (GTK_OBJECT (model),
966 gtk_tree_path_free (path);
970 gtk_tree_store_insert_before (model, iter, parent, NULL);
973 validate_tree ((GtkTreeStore*)model);
977 gtk_tree_store_is_ancestor (GtkTreeStore *model,
979 GtkTreeIter *descendant)
981 g_return_val_if_fail (model != NULL, FALSE);
982 g_return_val_if_fail (GTK_IS_TREE_STORE (model), FALSE);
983 g_return_val_if_fail (iter != NULL, FALSE);
984 g_return_val_if_fail (descendant != NULL, FALSE);
986 return g_node_is_ancestor (G_NODE (iter->user_data),
987 G_NODE (descendant->user_data));
992 gtk_tree_store_iter_depth (GtkTreeStore *model,
995 g_return_val_if_fail (model != NULL, 0);
996 g_return_val_if_fail (GTK_IS_TREE_STORE (model), 0);
997 g_return_val_if_fail (iter != NULL, 0);
999 return g_node_depth (G_NODE (iter->user_data)) - 1;
1007 gtk_tree_store_drag_data_delete (GtkTreeDragSource *drag_source,
1012 g_return_val_if_fail (GTK_IS_TREE_STORE (drag_source), FALSE);
1014 if (gtk_tree_model_get_iter (GTK_TREE_MODEL (drag_source),
1018 gtk_tree_store_remove (GTK_TREE_STORE (drag_source),
1029 gtk_tree_store_drag_data_get (GtkTreeDragSource *drag_source,
1031 GtkSelectionData *selection_data)
1033 g_return_val_if_fail (GTK_IS_TREE_STORE (drag_source), FALSE);
1035 /* Note that we don't need to handle the GTK_TREE_MODEL_ROW
1036 * target, because the default handler does it for us, but
1037 * we do anyway for the convenience of someone maybe overriding the
1041 if (gtk_selection_data_set_tree_row (selection_data,
1042 GTK_TREE_MODEL (drag_source),
1049 /* FIXME handle text targets at least. */
1056 copy_node_data (GtkTreeStore *tree_store,
1057 GtkTreeIter *src_iter,
1058 GtkTreeIter *dest_iter)
1060 GtkTreeDataList *dl = G_NODE (src_iter->user_data)->data;
1061 GtkTreeDataList *copy_head = NULL;
1062 GtkTreeDataList *copy_prev = NULL;
1063 GtkTreeDataList *copy_iter = NULL;
1069 copy_iter = _gtk_tree_data_list_node_copy (dl,
1070 tree_store->column_headers[col]);
1072 if (copy_head == NULL)
1073 copy_head = copy_iter;
1076 copy_prev->next = copy_iter;
1078 copy_prev = copy_iter;
1084 G_NODE (dest_iter->user_data)->data = copy_head;
1086 gtk_signal_emit_by_name (GTK_OBJECT (tree_store),
1092 recursive_node_copy (GtkTreeStore *tree_store,
1093 GtkTreeIter *src_iter,
1094 GtkTreeIter *dest_iter)
1097 GtkTreeModel *model;
1099 model = GTK_TREE_MODEL (tree_store);
1101 copy_node_data (tree_store, src_iter, dest_iter);
1103 if (gtk_tree_model_iter_children (model,
1107 /* Need to create children and recurse. Note our
1108 * dependence on persistent iterators here.
1114 /* Gee, a really slow algorithm... ;-) FIXME */
1115 gtk_tree_store_append (tree_store,
1119 recursive_node_copy (tree_store, &child, ©);
1121 while (gtk_tree_model_iter_next (model, &child));
1126 gtk_tree_store_drag_data_received (GtkTreeDragDest *drag_dest,
1128 GtkSelectionData *selection_data)
1130 GtkTreeModel *tree_model;
1131 GtkTreeStore *tree_store;
1132 GtkTreeModel *src_model = NULL;
1133 GtkTreePath *src_path = NULL;
1134 gboolean retval = FALSE;
1136 g_return_val_if_fail (GTK_IS_TREE_STORE (drag_dest), FALSE);
1138 tree_model = GTK_TREE_MODEL (drag_dest);
1139 tree_store = GTK_TREE_STORE (drag_dest);
1141 validate_tree (tree_store);
1143 if (gtk_selection_data_get_tree_row (selection_data,
1146 src_model == tree_model)
1148 /* Copy the given row to a new position */
1149 GtkTreeIter src_iter;
1150 GtkTreeIter dest_iter;
1153 if (!gtk_tree_model_get_iter (src_model,
1160 /* Get the path to insert _after_ (dest is the path to insert _before_) */
1161 prev = gtk_tree_path_copy (dest);
1163 if (!gtk_tree_path_prev (prev))
1165 GtkTreeIter dest_parent;
1166 GtkTreePath *parent;
1167 GtkTreeIter *dest_parent_p;
1169 /* dest was the first spot at the current depth; which means
1170 * we are supposed to prepend.
1173 /* Get the parent, NULL if parent is the root */
1174 dest_parent_p = NULL;
1175 parent = gtk_tree_path_copy (dest);
1176 if (gtk_tree_path_up (parent))
1178 gtk_tree_model_get_iter (tree_model,
1181 dest_parent_p = &dest_parent;
1183 gtk_tree_path_free (parent);
1186 gtk_tree_store_prepend (GTK_TREE_STORE (tree_model),
1194 if (gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_model),
1198 GtkTreeIter tmp_iter = dest_iter;
1199 gtk_tree_store_insert_after (GTK_TREE_STORE (tree_model),
1208 gtk_tree_path_free (prev);
1210 /* If we succeeded in creating dest_iter, walk src_iter tree branch,
1211 * duplicating it below dest_iter.
1216 recursive_node_copy (tree_store,
1223 /* FIXME maybe add some data targets eventually, or handle text
1224 * targets in the simple case.
1232 gtk_tree_path_free (src_path);
1238 gtk_tree_store_row_drop_possible (GtkTreeDragDest *drag_dest,
1239 GtkTreeModel *src_model,
1240 GtkTreePath *src_path,
1241 GtkTreePath *dest_path)
1243 /* can only drag to ourselves */
1244 if (src_model != GTK_TREE_MODEL (drag_dest))
1247 /* Can't drop into ourself. */
1248 if (gtk_tree_path_is_ancestor (src_path,
1252 /* Can't drop if dest_path's parent doesn't exist */
1255 GtkTreePath *tmp = gtk_tree_path_copy (dest_path);
1257 /* if we can't go up, we know the parent exists, the root
1260 if (gtk_tree_path_up (tmp))
1262 if (!gtk_tree_model_get_iter (GTK_TREE_MODEL (drag_dest),
1266 gtk_tree_path_free (tmp);
1272 gtk_tree_path_free (tmp);
1275 /* Can otherwise drop anywhere. */
1280 validate_gnode (GNode* node)
1284 iter = node->children;
1285 while (iter != NULL)
1287 g_assert (iter->parent == node);
1289 g_assert (iter->prev->next == iter);
1290 validate_gnode (iter);