/* gtkliststore.c * Copyright (C) 2000 Red Hat, Inc., Jonathan Blandford * * 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 #include "gtktreemodel.h" #include "gtkliststore.h" #include "gtktreedatalist.h" #include "gtksignal.h" #include "gtktreednd.h" #include #define G_SLIST(x) ((GSList *) x) enum { CHANGED, INSERTED, CHILD_TOGGLED, DELETED, LAST_SIGNAL }; static guint list_store_signals[LAST_SIGNAL] = { 0 }; static void gtk_list_store_init (GtkListStore *list_store); static void gtk_list_store_class_init (GtkListStoreClass *class); static void gtk_list_store_tree_model_init (GtkTreeModelIface *iface); static void gtk_list_store_drag_source_init(GtkTreeDragSourceIface *iface); static void gtk_list_store_drag_dest_init (GtkTreeDragDestIface *iface); static guint gtk_list_store_get_flags (GtkTreeModel *tree_model); static gint gtk_list_store_get_n_columns (GtkTreeModel *tree_model); static GType gtk_list_store_get_column_type (GtkTreeModel *tree_model, gint index); static gboolean gtk_list_store_get_iter (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreePath *path); static GtkTreePath *gtk_list_store_get_path (GtkTreeModel *tree_model, GtkTreeIter *iter); static void gtk_list_store_get_value (GtkTreeModel *tree_model, GtkTreeIter *iter, gint column, GValue *value); static gboolean gtk_list_store_iter_next (GtkTreeModel *tree_model, GtkTreeIter *iter); static gboolean gtk_list_store_iter_children (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *parent); static gboolean gtk_list_store_iter_has_child (GtkTreeModel *tree_model, GtkTreeIter *iter); static gint gtk_list_store_iter_n_children (GtkTreeModel *tree_model, GtkTreeIter *iter); static gboolean gtk_list_store_iter_nth_child (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *parent, gint n); static gboolean gtk_list_store_iter_parent (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *child); static gboolean gtk_list_store_drag_data_delete (GtkTreeDragSource *drag_source, GtkTreePath *path); static gboolean gtk_list_store_drag_data_get (GtkTreeDragSource *drag_source, GtkTreePath *path, GtkSelectionData *selection_data); static gboolean gtk_list_store_drag_data_received (GtkTreeDragDest *drag_dest, GtkTreePath *dest, GtkSelectionData *selection_data); static gboolean gtk_list_store_row_drop_possible (GtkTreeDragDest *drag_dest, GtkTreeModel *src_model, GtkTreePath *src_path, GtkTreePath *dest_path); static void validate_list_store (GtkListStore *list_store) { if (gtk_debug_flags & GTK_DEBUG_TREE) { g_assert (g_slist_length (list_store->root) == list_store->length); g_assert (g_slist_last (list_store->root) == list_store->tail); } } GtkType gtk_list_store_get_type (void) { static GtkType list_store_type = 0; if (!list_store_type) { static const GTypeInfo list_store_info = { sizeof (GtkListStoreClass), NULL, /* base_init */ NULL, /* base_finalize */ (GClassInitFunc) gtk_list_store_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GtkListStore), 0, (GInstanceInitFunc) gtk_list_store_init, }; static const GInterfaceInfo tree_model_info = { (GInterfaceInitFunc) gtk_list_store_tree_model_init, NULL, NULL }; static const GInterfaceInfo drag_source_info = { (GInterfaceInitFunc) gtk_list_store_drag_source_init, NULL, NULL }; static const GInterfaceInfo drag_dest_info = { (GInterfaceInitFunc) gtk_list_store_drag_dest_init, NULL, NULL }; list_store_type = g_type_register_static (GTK_TYPE_OBJECT, "GtkListStore", &list_store_info, 0); g_type_add_interface_static (list_store_type, GTK_TYPE_TREE_MODEL, &tree_model_info); g_type_add_interface_static (list_store_type, GTK_TYPE_TREE_DRAG_SOURCE, &drag_source_info); g_type_add_interface_static (list_store_type, GTK_TYPE_TREE_DRAG_DEST, &drag_dest_info); } return list_store_type; } static void gtk_list_store_class_init (GtkListStoreClass *class) { GtkObjectClass *object_class; object_class = (GtkObjectClass*) class; list_store_signals[CHANGED] = gtk_signal_new ("changed", GTK_RUN_FIRST, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkListStoreClass, changed), gtk_marshal_VOID__BOXED_BOXED, G_TYPE_NONE, 2, GTK_TYPE_TREE_PATH, GTK_TYPE_TREE_ITER); list_store_signals[INSERTED] = gtk_signal_new ("inserted", GTK_RUN_FIRST, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkListStoreClass, inserted), gtk_marshal_VOID__BOXED_BOXED, G_TYPE_NONE, 2, GTK_TYPE_TREE_PATH, GTK_TYPE_TREE_ITER); list_store_signals[CHILD_TOGGLED] = gtk_signal_new ("child_toggled", GTK_RUN_FIRST, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkListStoreClass, child_toggled), gtk_marshal_VOID__BOXED_BOXED, G_TYPE_NONE, 2, GTK_TYPE_TREE_PATH, GTK_TYPE_TREE_ITER); list_store_signals[DELETED] = gtk_signal_new ("deleted", GTK_RUN_FIRST, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkListStoreClass, deleted), gtk_marshal_VOID__BOXED, G_TYPE_NONE, 1, GTK_TYPE_TREE_PATH); } static void gtk_list_store_tree_model_init (GtkTreeModelIface *iface) { iface->get_flags = gtk_list_store_get_flags; iface->get_n_columns = gtk_list_store_get_n_columns; iface->get_column_type = gtk_list_store_get_column_type; iface->get_iter = gtk_list_store_get_iter; iface->get_path = gtk_list_store_get_path; iface->get_value = gtk_list_store_get_value; iface->iter_next = gtk_list_store_iter_next; iface->iter_children = gtk_list_store_iter_children; iface->iter_has_child = gtk_list_store_iter_has_child; iface->iter_n_children = gtk_list_store_iter_n_children; iface->iter_nth_child = gtk_list_store_iter_nth_child; iface->iter_parent = gtk_list_store_iter_parent; } static void gtk_list_store_drag_source_init (GtkTreeDragSourceIface *iface) { iface->drag_data_delete = gtk_list_store_drag_data_delete; iface->drag_data_get = gtk_list_store_drag_data_get; } static void gtk_list_store_drag_dest_init (GtkTreeDragDestIface *iface) { iface->drag_data_received = gtk_list_store_drag_data_received; iface->row_drop_possible = gtk_list_store_row_drop_possible; } static void gtk_list_store_init (GtkListStore *list_store) { list_store->root = NULL; list_store->tail = NULL; list_store->stamp = g_random_int (); list_store->length = 0; } /** * gtk_list_store_new: * * Creates a new #GtkListStore. A #GtkListStore implements the * #GtkTreeModel interface, and stores a linked list of * rows; each row can have any number of columns. Columns are of uniform type, * i.e. all cells in a column have the same type such as #G_TYPE_STRING or * #GDK_TYPE_PIXBUF. Use #GtkListStore to store data to be displayed in a * #GtkTreeView. * * Return value: a new #GtkListStore **/ GtkListStore * gtk_list_store_new (void) { return GTK_LIST_STORE (gtk_type_new (gtk_list_store_get_type ())); } /** * gtk_list_store_new_with_types: * @n_columns: number of columns in the list store * @Varargs: pairs of column number and #GType * * Creates a new list store as with gtk_list_store_new(), * simultaneously setting up the columns and column types as with * gtk_list_store_set_n_columns() and * gtk_list_store_set_column_type(). * * * Return value: a new #GtkListStore **/ GtkListStore * gtk_list_store_new_with_types (gint n_columns, ...) { GtkListStore *retval; va_list args; gint i; g_return_val_if_fail (n_columns > 0, NULL); retval = gtk_list_store_new (); gtk_list_store_set_n_columns (retval, n_columns); va_start (args, n_columns); for (i = 0; i < n_columns; i++) gtk_list_store_set_column_type (retval, i, va_arg (args, GType)); va_end (args); return retval; } /** * gtk_list_store_set_n_columns: * @store: a #GtkListStore * @n_columns: number of columns * * Sets the number of columns in the #GtkListStore. * **/ void gtk_list_store_set_n_columns (GtkListStore *list_store, gint n_columns) { GType *new_columns; g_return_if_fail (list_store != NULL); g_return_if_fail (GTK_IS_LIST_STORE (list_store)); g_return_if_fail (n_columns > 0); if (list_store->n_columns == n_columns) return; new_columns = g_new0 (GType, n_columns); if (list_store->column_headers) { /* copy the old header orders over */ if (n_columns >= list_store->n_columns) memcpy (new_columns, list_store->column_headers, list_store->n_columns * sizeof (gchar *)); else memcpy (new_columns, list_store->column_headers, n_columns * sizeof (GType)); g_free (list_store->column_headers); } list_store->column_headers = new_columns; list_store->n_columns = n_columns; } /** * gtk_list_store_set_column_type: * @store: a #GtkListStore * @column: column number * @type: type of the data 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_STRING, * %G_TYPE_OBJECT, and %G_TYPE_BOXED, along with subclasses of those types such * as %GDK_TYPE_PIXBUF. * **/ void gtk_list_store_set_column_type (GtkListStore *list_store, gint column, GType type) { g_return_if_fail (list_store != NULL); g_return_if_fail (GTK_IS_LIST_STORE (list_store)); g_return_if_fail (column >=0 && column < list_store->n_columns); list_store->column_headers[column] = type; } /* Fulfill the GtkTreeModel requirements */ static guint gtk_list_store_get_flags (GtkTreeModel *tree_model) { g_return_val_if_fail (GTK_IS_LIST_STORE (tree_model), 0); return GTK_TREE_MODEL_ITERS_PERSIST; } static gint gtk_list_store_get_n_columns (GtkTreeModel *tree_model) { g_return_val_if_fail (GTK_IS_LIST_STORE (tree_model), 0); return GTK_LIST_STORE (tree_model)->n_columns; } static GType gtk_list_store_get_column_type (GtkTreeModel *tree_model, gint index) { g_return_val_if_fail (GTK_IS_LIST_STORE (tree_model), G_TYPE_INVALID); g_return_val_if_fail (index < GTK_LIST_STORE (tree_model)->n_columns && index >= 0, G_TYPE_INVALID); return GTK_LIST_STORE (tree_model)->column_headers[index]; } static gboolean gtk_list_store_get_iter (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreePath *path) { GSList *list; gint i; g_return_val_if_fail (GTK_IS_LIST_STORE (tree_model), FALSE); g_return_val_if_fail (gtk_tree_path_get_depth (path) > 0, FALSE); i = gtk_tree_path_get_indices (path)[0]; if (i >= GTK_LIST_STORE (tree_model)->length) return FALSE; list = g_slist_nth (G_SLIST (GTK_LIST_STORE (tree_model)->root), i); /* If this fails, list_store->length has gotten mangled. */ g_assert (list); iter->stamp = GTK_LIST_STORE (tree_model)->stamp; iter->user_data = list; return TRUE; } static GtkTreePath * gtk_list_store_get_path (GtkTreeModel *tree_model, GtkTreeIter *iter) { GtkTreePath *retval; GSList *list; gint i = 0; g_return_val_if_fail (GTK_IS_LIST_STORE (tree_model), NULL); g_return_val_if_fail (iter->stamp == GTK_LIST_STORE (tree_model)->stamp, NULL); for (list = G_SLIST (GTK_LIST_STORE (tree_model)->root); list; list = list->next) { if (list == G_SLIST (iter->user_data)) break; i++; } if (list == NULL) return NULL; retval = gtk_tree_path_new (); gtk_tree_path_append_index (retval, i); return retval; } static void gtk_list_store_get_value (GtkTreeModel *tree_model, GtkTreeIter *iter, gint column, GValue *value) { GtkTreeDataList *list; gint tmp_column = column; g_return_if_fail (GTK_IS_LIST_STORE (tree_model)); g_return_if_fail (column < GTK_LIST_STORE (tree_model)->n_columns); g_return_if_fail (GTK_LIST_STORE (tree_model)->stamp == iter->stamp); list = G_SLIST (iter->user_data)->data; while (tmp_column-- > 0 && list) list = list->next; if (list == NULL) g_value_init (value, GTK_LIST_STORE (tree_model)->column_headers[column]); else _gtk_tree_data_list_node_to_value (list, GTK_LIST_STORE (tree_model)->column_headers[column], value); } static gboolean gtk_list_store_iter_next (GtkTreeModel *tree_model, GtkTreeIter *iter) { g_return_val_if_fail (GTK_IS_LIST_STORE (tree_model), FALSE); g_return_val_if_fail (GTK_LIST_STORE (tree_model)->stamp == iter->stamp, FALSE); if (G_SLIST (iter->user_data)->next) { iter->user_data = G_SLIST (iter->user_data)->next; return TRUE; } else return FALSE; } static gboolean gtk_list_store_iter_children (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *parent) { /* this is a list, nodes have no children */ if (parent) return FALSE; /* but if parent == NULL we return the list itself as children of the * "root" */ if (GTK_LIST_STORE (tree_model)->root) { iter->stamp = GTK_LIST_STORE (tree_model)->stamp; iter->user_data = GTK_LIST_STORE (tree_model)->root; return TRUE; } else return FALSE; } static gboolean gtk_list_store_iter_has_child (GtkTreeModel *tree_model, GtkTreeIter *iter) { return FALSE; } static gint gtk_list_store_iter_n_children (GtkTreeModel *tree_model, GtkTreeIter *iter) { if (iter == NULL) return GTK_LIST_STORE (tree_model)->length; else return 0; } static gboolean gtk_list_store_iter_nth_child (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *parent, gint n) { GSList *child; g_return_val_if_fail (GTK_IS_LIST_STORE (tree_model), FALSE); if (parent) return FALSE; child = g_slist_nth (G_SLIST (GTK_LIST_STORE (tree_model)->root), n); if (child) { iter->user_data = child; iter->stamp = GTK_LIST_STORE (tree_model)->stamp; return TRUE; } else return FALSE; } static gboolean gtk_list_store_iter_parent (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *child) { return FALSE; } /* Public accessors */ /* This is a somewhat inelegant function that does a lot of list * manipulations on it's own. */ /** * gtk_list_store_set_cell: * @store: a #GtkListStore * @iter: iterator for the row you're modifying * @column: column number to modify * @value: new value for the cell * * Sets the data in the cell specified by @iter and @column. * The type of @value must be convertible to the type of the * column. * **/ void gtk_list_store_set_cell (GtkListStore *list_store, GtkTreeIter *iter, gint column, GValue *value) { GtkTreeDataList *list; GtkTreeDataList *prev; g_return_if_fail (list_store != NULL); g_return_if_fail (GTK_IS_LIST_STORE (list_store)); g_return_if_fail (iter != NULL); g_return_if_fail (column >= 0 && column < list_store->n_columns); prev = list = G_SLIST (iter->user_data)->data; while (list != NULL) { if (column == 0) { _gtk_tree_data_list_value_to_node (list, value); gtk_signal_emit_by_name (GTK_OBJECT (list_store), "changed", NULL, iter); return; } column--; prev = list; list = list->next; } if (G_SLIST (iter->user_data)->data == NULL) { G_SLIST (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 --; } _gtk_tree_data_list_value_to_node (list, value); gtk_signal_emit_by_name (GTK_OBJECT (list_store), "changed", NULL, iter); } /** * gtk_list_store_set_valist: * @list_store: a #GtkListStore * @iter: row to set data for * @var_args: va_list of column/value pairs * * See gtk_list_store_set(); this version takes a va_list for * use by language bindings. * **/ void gtk_list_store_set_valist (GtkListStore *list_store, GtkTreeIter *iter, va_list var_args) { gint column; g_return_if_fail (GTK_IS_LIST_STORE (list_store)); column = va_arg (var_args, gint); while (column != -1) { GValue value = { 0, }; gchar *error = NULL; if (column >= list_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, list_store->column_headers[column]); G_VALUE_COLLECT (&value, var_args, &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; } gtk_list_store_set_cell (list_store, iter, column, &value); g_value_unset (&value); column = va_arg (var_args, gint); } } /** * gtk_list_store_set: * @list_store: a #GtkListStore * @iter: row iterator * @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 gtk_list_store_set (store, iter, * 0, "Foo", -1). **/ void gtk_list_store_set (GtkListStore *list_store, GtkTreeIter *iter, ...) { va_list var_args; g_return_if_fail (GTK_IS_LIST_STORE (list_store)); va_start (var_args, iter); gtk_list_store_set_valist (list_store, iter, var_args); va_end (var_args); } static GSList* remove_link_saving_prev (GSList *list, GSList *link, GSList **prevp) { GSList *tmp; GSList *prev; prev = NULL; tmp = list; while (tmp) { if (tmp == link) { if (prev) prev->next = link->next; if (list == link) list = list->next; link->next = NULL; break; } prev = tmp; tmp = tmp->next; } *prevp = prev; return list; } static void gtk_list_store_remove_silently (GtkListStore *list_store, GtkTreeIter *iter, GtkTreePath *path) { if (G_SLIST (iter->user_data)->data) { _gtk_tree_data_list_free ((GtkTreeDataList *) G_SLIST (iter->user_data)->data, list_store->column_headers); G_SLIST (iter->user_data)->data = NULL; } { GSList *prev = NULL; list_store->root = remove_link_saving_prev (G_SLIST (list_store->root), G_SLIST (iter->user_data), &prev); list_store->length -= 1; if (iter->user_data == list_store->tail) list_store->tail = prev; } list_store->stamp ++; } /** * gtk_list_store_remove: * @store: a #GtkListStore * @iter: a row in @list_store * * Removes the given row from the list store, emitting the * "deleted" signal on #GtkTreeModel. * **/ void gtk_list_store_remove (GtkListStore *list_store, GtkTreeIter *iter) { GtkTreePath *path; g_return_if_fail (list_store != NULL); g_return_if_fail (GTK_IS_LIST_STORE (list_store)); g_return_if_fail (iter->user_data != NULL); path = gtk_list_store_get_path (GTK_TREE_MODEL (list_store), iter); validate_list_store (list_store); gtk_list_store_remove_silently (list_store, iter, path); validate_list_store (list_store); gtk_signal_emit_by_name (GTK_OBJECT (list_store), "deleted", path); gtk_tree_path_free (path); } static void insert_after (GtkListStore *list_store, GSList *sibling, GSList *new_list) { g_return_if_fail (sibling != NULL); g_return_if_fail (new_list != NULL); /* insert new node after list */ new_list->next = sibling->next; sibling->next = new_list; /* if list was the tail, the new node is the new tail */ if (sibling == list_store->tail) list_store->tail = new_list; list_store->length += 1; } /** * gtk_list_store_insert: * @store: a #GtkListStore * @iter: iterator to initialize with the new row * @position: position to insert the new row * * Creates a new row at @position, initializing @iter to point to the * new row, and emitting the "inserted" signal from the #GtkTreeModel * interface. * **/ void gtk_list_store_insert (GtkListStore *list_store, GtkTreeIter *iter, gint position) { GSList *list; GtkTreePath *path; GSList *new_list; g_return_if_fail (list_store != NULL); g_return_if_fail (GTK_IS_LIST_STORE (list_store)); g_return_if_fail (iter != NULL); g_return_if_fail (position >= 0); if (position == 0) { gtk_list_store_prepend (list_store, iter); return; } new_list = g_slist_alloc (); list = g_slist_nth (G_SLIST (list_store->root), position - 1); if (list == NULL) { g_warning ("%s: position %d is off the end of the list\n", G_STRLOC, position); return; } insert_after (list_store, list, new_list); iter->stamp = list_store->stamp; iter->user_data = new_list; validate_list_store (list_store); path = gtk_tree_path_new (); gtk_tree_path_append_index (path, position); gtk_signal_emit_by_name (GTK_OBJECT (list_store), "inserted", path, iter); gtk_tree_path_free (path); } /** * gtk_list_store_insert_before: * @store: a #GtkListStore * @iter: iterator to initialize with the new row * @sibling: an existing row * * Inserts a new row before @sibling, initializing @iter to point to * the new row, and emitting the "inserted" signal from the * #GtkTreeModel interface. * **/ void gtk_list_store_insert_before (GtkListStore *list_store, GtkTreeIter *iter, GtkTreeIter *sibling) { GtkTreePath *path; GSList *list, *prev, *new_list; gint i = 0; g_return_if_fail (list_store != NULL); g_return_if_fail (GTK_IS_LIST_STORE (list_store)); g_return_if_fail (iter != NULL); if (sibling == NULL) { gtk_list_store_append (list_store, iter); return; } new_list = g_slist_alloc (); prev = NULL; list = list_store->root; while (list && list != sibling->user_data) { prev = list; list = list->next; i++; } if (list != sibling->user_data) { g_warning ("%s: sibling iterator invalid? not found in the list", G_STRLOC); return; } /* if there are no nodes, we become the list tail, otherwise we * are inserting before any existing nodes so we can't change * the tail */ if (list_store->root == NULL) list_store->tail = new_list; if (prev) { new_list->next = prev->next; prev->next = new_list; } else { new_list->next = list_store->root; list_store->root = new_list; } iter->stamp = list_store->stamp; iter->user_data = new_list; list_store->length += 1; validate_list_store (list_store); path = gtk_tree_path_new (); gtk_tree_path_append_index (path, i); gtk_signal_emit_by_name (GTK_OBJECT (list_store), "inserted", path, iter); gtk_tree_path_free (path); } /** * gtk_list_store_insert_after: * @store: a #GtkListStore * @iter: iterator to initialize with the new row * @sibling: an existing row * * Inserts a new row after @sibling, initializing @iter to point to * the new row, and emitting the "inserted" signal from the * #GtkTreeModel interface. * **/ void gtk_list_store_insert_after (GtkListStore *list_store, GtkTreeIter *iter, GtkTreeIter *sibling) { GtkTreePath *path; GSList *list, *new_list; gint i = 0; g_return_if_fail (list_store != NULL); g_return_if_fail (GTK_IS_LIST_STORE (list_store)); g_return_if_fail (iter != NULL); if (sibling) g_return_if_fail (sibling->stamp == list_store->stamp); if (sibling == NULL) { gtk_list_store_prepend (list_store, iter); return; } for (list = list_store->root; list && list != sibling->user_data; list = list->next) i++; g_return_if_fail (list == sibling->user_data); new_list = g_slist_alloc (); insert_after (list_store, list, new_list); iter->stamp = list_store->stamp; iter->user_data = new_list; validate_list_store (list_store); path = gtk_tree_path_new (); gtk_tree_path_append_index (path, i); gtk_signal_emit_by_name (GTK_OBJECT (list_store), "inserted", path, iter); gtk_tree_path_free (path); } /** * gtk_list_store_prepend: * @store: a #GtkListStore * @iter: iterator to initialize with new row * * Prepends a row to @store, initializing @iter to point to the * new row, and emitting the "inserted" signal on the #GtkTreeModel * interface for the @store. * **/ void gtk_list_store_prepend (GtkListStore *list_store, GtkTreeIter *iter) { GtkTreePath *path; g_return_if_fail (list_store != NULL); g_return_if_fail (GTK_IS_LIST_STORE (list_store)); g_return_if_fail (iter != NULL); iter->stamp = list_store->stamp; iter->user_data = g_slist_alloc (); if (list_store->root == NULL) list_store->tail = iter->user_data; G_SLIST (iter->user_data)->next = G_SLIST (list_store->root); list_store->root = iter->user_data; list_store->length += 1; validate_list_store (list_store); path = gtk_tree_path_new (); gtk_tree_path_append_index (path, 0); gtk_signal_emit_by_name (GTK_OBJECT (list_store), "inserted", path, iter); gtk_tree_path_free (path); } /** * gtk_list_store_append: * @store: a #GtkListStore * @iter: iterator to initialize with the new row * * Appends a row to @store, initializing @iter to point to the * new row, and emitting the "inserted" signal on the #GtkTreeModel * interface for the @store. * **/ void gtk_list_store_append (GtkListStore *list_store, GtkTreeIter *iter) { GtkTreePath *path; gint i = 0; g_return_if_fail (list_store != NULL); g_return_if_fail (GTK_IS_LIST_STORE (list_store)); g_return_if_fail (iter != NULL); iter->stamp = list_store->stamp; iter->user_data = g_slist_alloc (); if (list_store->tail) list_store->tail->next = iter->user_data; else list_store->root = iter->user_data; list_store->tail = iter->user_data; list_store->length += 1; validate_list_store (list_store); path = gtk_tree_path_new (); gtk_tree_path_append_index (path, i); gtk_signal_emit_by_name (GTK_OBJECT (list_store), "inserted", path, iter); gtk_tree_path_free (path); } static gboolean gtk_list_store_drag_data_delete (GtkTreeDragSource *drag_source, GtkTreePath *path) { GtkTreeIter iter; g_return_val_if_fail (GTK_IS_LIST_STORE (drag_source), FALSE); if (gtk_tree_model_get_iter (GTK_TREE_MODEL (drag_source), &iter, path)) { gtk_list_store_remove (GTK_LIST_STORE (drag_source), &iter); return TRUE; } else { return FALSE; } } static gboolean gtk_list_store_drag_data_get (GtkTreeDragSource *drag_source, GtkTreePath *path, GtkSelectionData *selection_data) { g_return_val_if_fail (GTK_IS_LIST_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_selection_data_set_tree_row (selection_data, GTK_TREE_MODEL (drag_source), path)) { return TRUE; } else { /* FIXME handle text targets at least. */ } return FALSE; } static gboolean gtk_list_store_drag_data_received (GtkTreeDragDest *drag_dest, GtkTreePath *dest, GtkSelectionData *selection_data) { GtkTreeModel *tree_model; GtkListStore *list_store; GtkTreeModel *src_model = NULL; GtkTreePath *src_path = NULL; gboolean retval = FALSE; g_return_val_if_fail (GTK_IS_LIST_STORE (drag_dest), FALSE); tree_model = GTK_TREE_MODEL (drag_dest); list_store = GTK_LIST_STORE (drag_dest); if (gtk_selection_data_get_tree_row (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)) { /* dest was the first spot in the list; which means we are supposed * to prepend. */ gtk_list_store_prepend (GTK_LIST_STORE (tree_model), &dest_iter); retval = TRUE; } else { if (gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_model), &dest_iter, prev)) { GtkTreeIter tmp_iter = dest_iter; gtk_list_store_insert_after (GTK_LIST_STORE (tree_model), &dest_iter, &tmp_iter); retval = TRUE; } } gtk_tree_path_free (prev); /* If we succeeded in creating dest_iter, copy data from src */ if (retval) { GtkTreeDataList *dl = G_SLIST (src_iter.user_data)->data; GtkTreeDataList *copy_head = NULL; GtkTreeDataList *copy_prev = NULL; GtkTreeDataList *copy_iter = NULL; gint col; col = 0; while (dl) { copy_iter = _gtk_tree_data_list_node_copy (dl, list_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_SLIST (dest_iter.user_data)->data = copy_head; gtk_signal_emit_by_name (GTK_OBJECT (tree_model), "changed", NULL, &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_list_store_row_drop_possible (GtkTreeDragDest *drag_dest, GtkTreeModel *src_model, GtkTreePath *src_path, GtkTreePath *dest_path) { gint *indices; g_return_val_if_fail (GTK_IS_LIST_STORE (drag_dest), FALSE); if (src_model != GTK_TREE_MODEL (drag_dest)) return FALSE; if (gtk_tree_path_get_depth (dest_path) != 1) return FALSE; /* can drop before any existing node, or before one past any existing. */ indices = gtk_tree_path_get_indices (dest_path); if (indices[0] <= GTK_LIST_STORE (drag_dest)->length) return TRUE; else return FALSE; }