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-rw-r--r--widgets/table/e-tree-selection-model.c468
-rw-r--r--widgets/table/e-tree-selection-model.h13
-rw-r--r--widgets/table/e-tree-sorted.c8
-rw-r--r--widgets/table/e-tree-sorted.h2
4 files changed, 433 insertions, 58 deletions
diff --git a/widgets/table/e-tree-selection-model.c b/widgets/table/e-tree-selection-model.c
index abc7f6cf2b..93f59583d8 100644
--- a/widgets/table/e-tree-selection-model.c
+++ b/widgets/table/e-tree-selection-model.c
@@ -10,6 +10,7 @@
#include <config.h>
#include <gtk/gtksignal.h>
#include "e-tree-selection-model.h"
+#include "gal/util/e-bit-array.h"
#include "gal/util/e-util.h"
#include <gdk/gdkkeysyms.h>
@@ -28,6 +29,64 @@ enum {
ARG_ETS,
};
+struct ETreeSelectionModelNode {
+ guint selected : 1;
+ guint all_children_selected : 1;
+ guint any_children_selected : 1;
+ EBitArray *all_children_selected_array;
+ EBitArray *any_children_selected_array;
+ ETreeSelectionModelNode **children;
+ int num_children;
+};
+
+/* ETreeSelectionModelNode helpers */
+
+static ETreeSelectionModelNode *
+e_tree_selection_model_node_new (void)
+{
+ ETreeSelectionModelNode *node = g_new(ETreeSelectionModelNode, 1);
+
+ node->selected = 0;
+ node->all_children_selected = 0;
+ node->any_children_selected = 0;
+ node->all_children_selected_array = NULL;
+ node->any_children_selected_array = NULL;
+ node->children = NULL;
+ node->num_children = -1;
+
+ return node;
+}
+
+static void
+e_tree_selection_model_node_fill_children(ETreeSelectionModel *etsm, ETreePath path, ETreeSelectionModelNode *selection_node)
+{
+ int i;
+ selection_node->num_children = e_tree_sorted_node_num_children(etsm->ets, path);
+ selection_node->children = g_new(ETreeSelectionModelNode *, selection_node->num_children);
+ for (i = 0; i < selection_node->num_children; i++) {
+ selection_node->children[i] = NULL;
+ }
+}
+
+static void
+e_tree_selection_model_node_free(ETreeSelectionModelNode *node)
+{
+ int i;
+
+ if (node->all_children_selected_array)
+ gtk_object_unref(GTK_OBJECT(node->all_children_selected_array));
+ if (node->any_children_selected_array)
+ gtk_object_unref(GTK_OBJECT(node->any_children_selected_array));
+
+ for (i = 0; i < node->num_children; i++)
+ if (node->children[i])
+ e_tree_selection_model_node_free(node->children[i]);
+ g_free(node->children);
+
+ g_free(node);
+}
+
+
static ETreePath
etsm_node_at_row(ETreeSelectionModel *etsm, int row)
{
@@ -64,8 +123,10 @@ etsm_cursor_row_real (ETreeSelectionModel *etsm)
static void
etsm_real_clear (ETreeSelectionModel *etsm)
{
- g_hash_table_destroy(etsm->data);
- etsm->data = g_hash_table_new(NULL, NULL);
+ if (etsm->root) {
+ e_tree_selection_model_node_free(etsm->root);
+ etsm->root = NULL;
+ }
}
static void
@@ -75,7 +136,7 @@ etsm_destroy (GtkObject *object)
etsm = E_TREE_SELECTION_MODEL (object);
- g_hash_table_destroy(etsm->data);
+ etsm_real_clear (etsm);
}
static void
@@ -135,6 +196,59 @@ etsm_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
}
}
+static ETreeSelectionModelNode *
+etsm_recurse_is_path_selected (ESelectionModel *selection,
+ ETreePath path,
+ gboolean *is_selected)
+{
+ ETreeSelectionModelNode *selection_node;
+ ETreeSelectionModel *etsm = E_TREE_SELECTION_MODEL(selection);
+ ETreeSorted *ets = etsm->ets;
+ ETreePath parent;
+
+ parent = e_tree_model_node_get_parent(E_TREE_MODEL(ets), path);
+
+ if (parent) {
+ selection_node = etsm_recurse_is_path_selected (selection, parent, is_selected);
+ if (selection_node) {
+ int position = e_tree_sorted_orig_position(ets, path);
+ if (position < 0 || position >= selection_node->num_children) {
+ *is_selected = FALSE;
+ return NULL;
+ }
+ if (selection_node->all_children_selected) {
+ *is_selected = TRUE;
+ return NULL;
+ }
+ if (! selection_node->any_children_selected) {
+ *is_selected = FALSE;
+ return NULL;
+ }
+ if (selection_node->all_children_selected_array && e_bit_array_value_at(selection_node->all_children_selected_array, position)) {
+ *is_selected = TRUE;
+ return NULL;
+ }
+ if (selection_node->any_children_selected_array && ! e_bit_array_value_at(selection_node->any_children_selected_array, position)) {
+ *is_selected = FALSE;
+ return NULL;
+ }
+ if (!selection_node->children) {
+ *is_selected = FALSE;
+ return NULL;
+ }
+ return selection_node->children[position];
+ } else
+ return NULL;
+ } else {
+ if (etsm->root) {
+ return etsm->root;
+ } else {
+ *is_selected = FALSE;
+ return NULL;
+ }
+ }
+}
+
/**
* e_selection_model_is_row_selected
* @selection: #ESelectionModel to check
@@ -146,41 +260,37 @@ etsm_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
*/
static gboolean
etsm_is_row_selected (ESelectionModel *selection,
- gint n)
+ gint row)
{
ETreeSelectionModel *etsm = E_TREE_SELECTION_MODEL(selection);
ETreePath path;
+ ETreeSelectionModelNode *selection_node;
- path = etsm_node_at_row(etsm, n);
- if (!etsm->invert_selection) {
- if (path)
- return (gboolean) g_hash_table_lookup (etsm->data, path);
- else
- return FALSE;
- } else {
- if (path)
- return !(gboolean) g_hash_table_lookup (etsm->data, path);
- else
- return TRUE;
- }
+ gboolean ret_val;
+
+ path = e_tree_table_adapter_node_at_row(etsm->etta, row);
+
+ selection_node = etsm_recurse_is_path_selected (selection, path, &ret_val);
+
+ if (selection_node)
+ ret_val = selection_node->selected;
+
+ return ret_val;
}
+
typedef struct {
ETreeSelectionModel *etsm;
- EForeachFunc callback;
- gpointer closure;
+ EForeachFunc callback;
+ gpointer closure;
} ModelAndCallback;
static void
-etsm_foreach_callback (gpointer key, gpointer value, gpointer user_data)
+etsm_row_foreach_cb (ETreePath path, gpointer user_data)
{
ModelAndCallback *mac = user_data;
- ETreePath path = key;
- int row;
-
- row = etsm_row_of_node(mac->etsm, path);
- if (row != -1)
- mac->callback(row, mac->closure);
+ int row = etsm_row_of_node(mac->etsm, path);
+ mac->callback(row, mac->closure);
}
/**
@@ -198,16 +308,13 @@ etsm_foreach (ESelectionModel *selection,
gpointer closure)
{
ETreeSelectionModel *etsm = E_TREE_SELECTION_MODEL(selection);
+ ModelAndCallback mac;
- if (etsm->invert_selection) {
- g_warning ("FIXME: Not implemented yet line 167 of e-tree-selection-model.c");
- } else {
- ModelAndCallback mac;
- mac.etsm = etsm;
- mac.callback = callback;
- mac.closure = closure;
- g_hash_table_foreach(etsm->data, etsm_foreach_callback, &mac);
- }
+ mac.etsm = etsm;
+ mac.callback = callback;
+ mac.closure = closure;
+
+ e_tree_selection_model_foreach(etsm, etsm_row_foreach_cb, &mac);
}
/**
@@ -222,7 +329,6 @@ etsm_clear(ESelectionModel *selection)
ETreeSelectionModel *etsm = E_TREE_SELECTION_MODEL(selection);
etsm_real_clear (etsm);
- etsm->invert_selection = FALSE;
etsm->cursor_path = NULL;
etsm->cursor_col = -1;
@@ -230,6 +336,7 @@ etsm_clear(ESelectionModel *selection)
e_selection_model_cursor_changed(E_SELECTION_MODEL(etsm), -1, -1);
}
+#if 0
/**
* e_selection_model_selected_count
* @selection: #ESelectionModel to count
@@ -245,6 +352,7 @@ etsm_selected_count (ESelectionModel *selection)
return g_hash_table_size(etsm->data);
}
+#endif
/**
* e_selection_model_select_all
@@ -259,7 +367,11 @@ etsm_select_all (ESelectionModel *selection)
ETreeSelectionModel *etsm = E_TREE_SELECTION_MODEL(selection);
etsm_real_clear (etsm);
- etsm->invert_selection = TRUE;
+
+ etsm->root = e_tree_selection_model_node_new();
+ etsm->root->selected = TRUE;
+ etsm->root->all_children_selected = TRUE;
+ etsm->root->any_children_selected = TRUE;
if (etsm->cursor_col == -1)
etsm->cursor_col = 0;
@@ -270,6 +382,34 @@ etsm_select_all (ESelectionModel *selection)
e_selection_model_cursor_changed(E_SELECTION_MODEL(etsm), etsm_cursor_row_real(etsm), etsm->cursor_col);
}
+static void
+etsm_invert_selection_recurse (ETreeSelectionModel *etsm,
+ ETreeSelectionModelNode *selection_node)
+{
+ gboolean temp;
+ EBitArray *temp_eba;
+ selection_node->selected = ! selection_node->selected;
+
+ temp = selection_node->all_children_selected;
+ selection_node->all_children_selected = ! selection_node->any_children_selected;
+ selection_node->any_children_selected = ! temp;
+
+ temp_eba = selection_node->all_children_selected_array;
+ selection_node->all_children_selected_array = selection_node->any_children_selected_array;
+ selection_node->any_children_selected_array = temp_eba;
+ if (selection_node->all_children_selected_array)
+ e_bit_array_invert_selection(selection_node->all_children_selected_array);
+ if (selection_node->any_children_selected_array)
+ e_bit_array_invert_selection(selection_node->any_children_selected_array);
+ if (selection_node->children) {
+ int i;
+ for (i = 0; i < selection_node->num_children; i++) {
+ if (selection_node->children[i])
+ etsm_invert_selection_recurse (etsm, selection_node->children[i]);
+ }
+ }
+}
+
/**
* e_selection_model_invert_selection
* @selection: #ESelectionModel to invert
@@ -282,7 +422,8 @@ etsm_invert_selection (ESelectionModel *selection)
{
ETreeSelectionModel *etsm = E_TREE_SELECTION_MODEL(selection);
- etsm->invert_selection = ! etsm->invert_selection;
+ if (etsm->root)
+ etsm_invert_selection_recurse (etsm, etsm->root);
etsm->cursor_col = -1;
etsm->cursor_path = NULL;
@@ -298,20 +439,186 @@ etsm_row_count (ESelectionModel *selection)
return e_table_model_row_count(E_TABLE_MODEL(etsm->etta));
}
+static ETreeSelectionModelNode *
+etsm_find_node_unless_equals (ETreeSelectionModel *etsm,
+ ETreePath path,
+ gboolean grow)
+{
+ ETreeSelectionModelNode *selection_node;
+ ETreeSorted *ets = etsm->ets;
+ ETreePath parent;
+
+ parent = e_tree_model_node_get_parent(E_TREE_MODEL(ets), path);
+
+ if (parent) {
+ selection_node = etsm_find_node_unless_equals(etsm, parent, grow);
+ if (selection_node) {
+ int position = e_tree_sorted_orig_position(ets, path);
+ if (selection_node->all_children_selected && grow)
+ return NULL;
+ if (!(selection_node->any_children_selected || grow))
+ return NULL;
+ if (selection_node->all_children_selected_array && e_bit_array_value_at(selection_node->all_children_selected_array, position) && grow)
+ return NULL;
+ if (selection_node->any_children_selected_array && ! (e_bit_array_value_at(selection_node->any_children_selected_array, position) || grow))
+ return NULL;
+ if (selection_node->children == NULL) {
+ e_tree_selection_model_node_fill_children(etsm, parent, selection_node);
+ }
+ if (!selection_node->children[position])
+ selection_node->children[position] = e_tree_selection_model_node_new();
+
+ return selection_node->children[position];
+ } else
+ return NULL;
+ } else {
+ if (!etsm->root)
+ etsm->root = e_tree_selection_model_node_new();
+ return etsm->root;
+ }
+}
+
+#if 0
+static ETreeSelectionModelNode *
+find_or_create_node (ETreeSelectionModel *etsm,
+ ETreePath path)
+{
+ ETreeSelectionModelNode *selection_node;
+ ETreeSelectionModelNode **place = NULL;
+ ETreeSorted *ets = etsm->ets;
+ ETreePath parent;
+
+ parent = e_tree_model_node_get_parent(E_TREE_MODEL(ets), path);
+
+ if (parent) {
+ selection_node = find_or_create_node(etsm, parent);
+ if (selection_node) {
+ int position = e_tree_sorted_orig_position(ets, path);
+ if (!selection_node->children) {
+ e_tree_selection_model_node_fill_children(etsm, parent, selection_node);
+ }
+ if (!selection_node->children[position])
+ slection_node->children[position] = e_tree_selection_model_node_new();
+
+ return selection_node->children[position];
+ } else
+ return NULL;
+ } else {
+ if (!etsm->root)
+ etsm->root = e_tree_selection_model_node_new();
+ return etsm->root;
+ }
+}
+#endif
+
+static void
+update_parents (ETreeSelectionModel *etsm, ETreePath path)
+{
+ int i;
+ int depth;
+ ETreeSorted *ets = etsm->ets;
+ int *orig_position_sequence;
+ ETreeSelectionModelNode **node_sequence;
+ ETreePath parents;
+
+ if (!etsm->root)
+ return;
+
+ depth = e_tree_model_node_depth (E_TREE_MODEL(ets), path);
+
+ orig_position_sequence = g_new(int, depth);
+ node_sequence = g_new(ETreeSelectionModelNode *, depth + 1);
+
+ parents = path;
+
+ for (i = depth; i > 0; i--) {
+ if (!parents) {
+ g_free(orig_position_sequence);
+ g_free(node_sequence);
+ return;
+ }
+ orig_position_sequence[i] = e_tree_sorted_orig_position(etsm->ets, parents);
+ parents = e_tree_model_node_get_parent(E_TREE_MODEL(etsm->ets), parents);
+ }
+
+ node_sequence[0] = etsm->root;
+ for (i = 0; i < depth; i++) {
+ node_sequence[i + 1] = NULL;
+
+ if (node_sequence[i]->children)
+ node_sequence[i + 1] = node_sequence[i]->children[orig_position_sequence[i + 1]];
+
+ if (node_sequence[i + 1] == NULL) {
+ g_free(orig_position_sequence);
+ g_free(node_sequence);
+ return;
+ }
+ }
+
+ if (node_sequence[depth]->num_children == -1)
+ e_tree_selection_model_node_fill_children(etsm, path, node_sequence[depth]);
+
+ if (!node_sequence[depth]->all_children_selected_array)
+ node_sequence[depth]->all_children_selected_array = e_bit_array_new(node_sequence[depth]->num_children);
+ if (!node_sequence[depth]->any_children_selected_array)
+ node_sequence[depth]->any_children_selected_array = e_bit_array_new(node_sequence[depth]->num_children);
+
+ node_sequence[depth]->all_children_selected =
+ e_bit_array_cross_and(node_sequence[depth]->all_children_selected_array) &&
+ node_sequence[depth]->selected;
+
+ node_sequence[depth]->any_children_selected =
+ e_bit_array_cross_or(node_sequence[depth]->any_children_selected_array) ||
+ node_sequence[depth]->selected;
+
+ for (i = depth - 1; i >= 0; i--) {
+ gboolean all_children, any_children;
+
+ if (!node_sequence[i]->all_children_selected_array)
+ node_sequence[i]->all_children_selected_array = e_bit_array_new(node_sequence[i]->num_children);
+ if (!node_sequence[i]->any_children_selected_array)
+ node_sequence[i]->any_children_selected_array = e_bit_array_new(node_sequence[i]->num_children);
+
+ e_bit_array_change_one_row(node_sequence[i]->all_children_selected_array,
+ orig_position_sequence[i + 1], node_sequence[i + 1]->all_children_selected);
+ e_bit_array_change_one_row(node_sequence[i]->any_children_selected_array,
+ orig_position_sequence[i + 1], node_sequence[i + 1]->any_children_selected);
+
+ all_children = node_sequence[i]->all_children_selected;
+ any_children = node_sequence[i]->any_children_selected;
+
+ node_sequence[i]->all_children_selected =
+ e_bit_array_cross_and(node_sequence[i]->all_children_selected_array) &&
+ node_sequence[i]->selected;
+ node_sequence[i]->any_children_selected =
+ e_bit_array_cross_or(node_sequence[i]->any_children_selected_array) ||
+ node_sequence[i]->selected;
+
+ if (all_children == node_sequence[i]->all_children_selected &&
+ any_children == node_sequence[i]->any_children_selected)
+ break;
+ }
+
+ g_free(orig_position_sequence);
+ g_free(node_sequence);
+}
+
static void
etsm_change_one_row(ESelectionModel *selection, int row, gboolean grow)
{
ETreeSelectionModel *etsm = E_TREE_SELECTION_MODEL(selection);
- ETreePath path = etsm_node_at_row(etsm, row);
+ ETreeSelectionModelNode *node;
+ ETreePath path = e_tree_table_adapter_node_at_row(etsm->etta, row);
if (!path)
return;
- if ((grow && (!etsm->invert_selection)) ||
- ((!grow) && etsm->invert_selection) )
- g_hash_table_insert(etsm->data, path, path);
- else
- g_hash_table_remove(etsm->data, path);
+ node = etsm_find_node_unless_equals (etsm, path, grow);
+
+ if (node) {
+ node->selected = grow;
+ update_parents(etsm, path);
+ }
}
static void
@@ -368,7 +675,6 @@ etsm_select_single_row (ESelectionModel *selection, int row)
ETreeSelectionModel *etsm = E_TREE_SELECTION_MODEL(selection);
etsm_real_clear (etsm);
- etsm->invert_selection = FALSE;
etsm_change_one_row(selection, row, TRUE);
etsm->selection_start_row = row;
@@ -379,18 +685,12 @@ static void
etsm_toggle_single_row (ESelectionModel *selection, int row)
{
ETreeSelectionModel *etsm = E_TREE_SELECTION_MODEL(selection);
- ETreePath path;
etsm->selection_start_row = row;
- path = etsm_node_at_row(etsm, row);
- if (path) {
- if (g_hash_table_lookup(etsm->data, path))
- g_hash_table_remove(etsm->data, path);
- else
- g_hash_table_insert(etsm->data, path, path);
- e_selection_model_selection_changed(E_SELECTION_MODEL(etsm));
- }
+ etsm_change_one_row(selection, row, !etsm_is_row_selected(selection, row));
+
+ e_selection_model_selection_changed(E_SELECTION_MODEL(etsm));
}
static void
@@ -440,12 +740,67 @@ etsm_set_selection_end (ESelectionModel *selection, int row)
e_selection_model_move_selection_end(selection, row);
}
+static void
+etsm_foreach_all_recurse (ETreeSelectionModel *etsm,
+ ETreePath path,
+ ETreeForeachFunc callback,
+ gpointer closure)
+{
+ ETreePath child = e_tree_model_node_get_first_child(E_TREE_MODEL(etsm->ets), path);
+ for ( ; child; child = e_tree_model_node_get_next(E_TREE_MODEL(etsm->ets), child)) {
+ if (child) {
+ ETreePath model_path = e_tree_sorted_view_to_model_path(etsm->ets, child);
+ callback(model_path, closure);
+
+ etsm_foreach_all_recurse (etsm, child, callback, closure);
+ }
+ }
+}
+
+static void
+etsm_foreach_recurse (ETreeSelectionModel *etsm,
+ ETreeSelectionModelNode *selection_node,
+ ETreePath path,
+ ETreeForeachFunc callback,
+ gpointer closure)
+{
+ if (selection_node->all_children_selected) {
+ if (path)
+ etsm_foreach_all_recurse(etsm, path, callback, closure);
+ return;
+ }
+ if (!selection_node->any_children_selected)
+ return;
+
+ if (selection_node->selected) {
+ ETreePath model_path = e_tree_sorted_view_to_model_path(etsm->ets, path);
+ callback(model_path, closure);
+ }
+
+ if (selection_node->children) {
+ ETreePath child = e_tree_model_node_get_first_child(E_TREE_MODEL(etsm->ets), path);
+ int i;
+ for (i = 0; i < selection_node->num_children; i++, child = e_tree_model_node_get_next(E_TREE_MODEL(etsm->ets), child))
+ if (selection_node->children[i])
+ etsm_foreach_recurse (etsm, selection_node->children[i], child, callback, closure);
+ }
+}
+
+void
+e_tree_selection_model_foreach (ETreeSelectionModel *etsm,
+ ETreeForeachFunc callback,
+ gpointer closure)
+{
+ if (etsm->root) {
+ etsm_foreach_recurse(etsm, etsm->root, e_tree_model_get_root(E_TREE_MODEL(etsm->ets)), callback, closure);
+ }
+}
+
static void
e_tree_selection_model_init (ETreeSelectionModel *etsm)
{
- etsm->data = g_hash_table_new(NULL, NULL);
- etsm->invert_selection = FALSE;
+ etsm->root = NULL;
etsm->cursor_path = NULL;
etsm->cursor_col = -1;
}
@@ -468,7 +823,9 @@ e_tree_selection_model_class_init (ETreeSelectionModelClass *klass)
esm_class->is_row_selected = etsm_is_row_selected ;
esm_class->foreach = etsm_foreach ;
esm_class->clear = etsm_clear ;
+#if 0
esm_class->selected_count = etsm_selected_count ;
+#endif
esm_class->select_all = etsm_select_all ;
esm_class->invert_selection = etsm_invert_selection ;
esm_class->row_count = etsm_row_count ;
@@ -503,3 +860,4 @@ e_tree_selection_model_new (void)
E_MAKE_TYPE(e_tree_selection_model, "ETreeSelectionModel", ETreeSelectionModel,
e_tree_selection_model_class_init, e_tree_selection_model_init, PARENT_TYPE);
+
diff --git a/widgets/table/e-tree-selection-model.h b/widgets/table/e-tree-selection-model.h
index 0d28f47c90..5a591053a0 100644
--- a/widgets/table/e-tree-selection-model.h
+++ b/widgets/table/e-tree-selection-model.h
@@ -14,6 +14,11 @@
extern "C" {
#endif /* __cplusplus */
+typedef void (*ETreeForeachFunc) (ETreePath path,
+ gpointer closure);
+
+typedef struct ETreeSelectionModelNode ETreeSelectionModelNode;
+
#define E_TREE_SELECTION_MODEL_TYPE (e_tree_selection_model_get_type ())
#define E_TREE_SELECTION_MODEL(o) (GTK_CHECK_CAST ((o), E_TREE_SELECTION_MODEL_TYPE, ETreeSelectionModel))
#define E_TREE_SELECTION_MODEL_CLASS(k) (GTK_CHECK_CLASS_CAST((k), E_TREE_SELECTION_MODEL_TYPE, ETreeSelectionModelClass))
@@ -27,9 +32,7 @@ typedef struct {
ETreeSorted *ets;
ETreeModel *model;
- GHashTable *data;
-
- gboolean invert_selection;
+ ETreeSelectionModelNode *root;
ETreePath cursor_path;
gint cursor_col;
@@ -47,8 +50,12 @@ typedef struct {
ESelectionModelClass parent_class;
} ETreeSelectionModelClass;
+
GtkType e_tree_selection_model_get_type (void);
ESelectionModel *e_tree_selection_model_new (void);
+void e_tree_selection_model_foreach (ETreeSelectionModel *etsm,
+ ETreeForeachFunc callback,
+ gpointer closure);
#ifdef __cplusplus
}
diff --git a/widgets/table/e-tree-sorted.c b/widgets/table/e-tree-sorted.c
index a5e5e751f5..b041e73952 100644
--- a/widgets/table/e-tree-sorted.c
+++ b/widgets/table/e-tree-sorted.c
@@ -1173,3 +1173,11 @@ e_tree_sorted_orig_position (ETreeSorted *ets,
ETreeSortedPath *sorted_path = path;
return sorted_path->orig_position;
}
+
+int
+e_tree_sorted_node_num_children (ETreeSorted *ets,
+ ETreePath path)
+{
+ ETreeSortedPath *sorted_path = path;
+ return sorted_path->num_children;
+}
diff --git a/widgets/table/e-tree-sorted.h b/widgets/table/e-tree-sorted.h
index 3b81e2dcab..1ad5438c29 100644
--- a/widgets/table/e-tree-sorted.h
+++ b/widgets/table/e-tree-sorted.h
@@ -48,6 +48,8 @@ ETreePath e_tree_sorted_model_to_view_path (ETreeSorted *ets,
ETreePath model_path);
int e_tree_sorted_orig_position (ETreeSorted *ets,
ETreePath path);
+int e_tree_sorted_node_num_children (ETreeSorted *ets,
+ ETreePath path);
#ifdef __cplusplus
}