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gtk2/gtk/a11y/gtktreeviewaccessible.c
Benjamin Otte af4b26f581 a11y: Fix refcounting for treeview cells 
Old code assumed that AT-SPI would keep track of references and
therefore tried to only hold weak references. On the other hand it also
tried to keep objects alive so it referenced objects very randomly. All
of that lead to cycles and leaking.

As AT-SPI does not keep track of objects at all, the treeview now does.
The refcounting looks as follows:
GtkTreeViewAccessible
  => creates per row/column
GtkTreeViewAccessibleCellInfo
  => which references 1
GtkCellAccessible

If there is only one cell, this accessible is a
GtkRendererCellAccessible, otherwise a GtkContainerCellAccessible is
created and that accessible holds references to the
GtkRendererCellAccessibles that are created for every cell renderer.

https://bugzilla.gnome.org/show_bug.cgi?id=554618
2014-02-26 02:36:08 +01:00

2026 lines
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/* GTK+ - accessibility implementations
* Copyright 2001, 2002, 2003 Sun Microsystems Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gtk/gtk.h>
#ifdef GDK_WINDOWING_X11
#include <gdk/x11/gdkx.h>
#endif
#include "gtktreeprivate.h"
#include "gtkwidgetprivate.h"
#include "gtktreeviewaccessibleprivate.h"
#include "gtkrenderercellaccessible.h"
#include "gtkbooleancellaccessible.h"
#include "gtkimagecellaccessible.h"
#include "gtkcontainercellaccessible.h"
#include "gtktextcellaccessible.h"
#include "gtkcellaccessibleparent.h"
#include "gtkcellaccessibleprivate.h"
struct _GtkTreeViewAccessiblePrivate
{
GHashTable *cell_infos;
};
typedef struct _GtkTreeViewAccessibleCellInfo GtkTreeViewAccessibleCellInfo;
struct _GtkTreeViewAccessibleCellInfo
{
GtkCellAccessible *cell;
GtkRBTree *tree;
GtkRBNode *node;
GtkTreeViewColumn *cell_col_ref;
GtkTreeViewAccessible *view;
};
/* Misc */
static int cell_info_get_index (GtkTreeView *tree_view,
GtkTreeViewAccessibleCellInfo *info);
static gboolean is_cell_showing (GtkTreeView *tree_view,
GdkRectangle *cell_rect);
static void cell_info_new (GtkTreeViewAccessible *accessible,
GtkRBTree *tree,
GtkRBNode *node,
GtkTreeViewColumn *tv_col,
GtkCellAccessible *cell);
static gint get_column_number (GtkTreeView *tree_view,
GtkTreeViewColumn *column);
static gboolean get_rbtree_column_from_index (GtkTreeView *tree_view,
gint index,
GtkRBTree **tree,
GtkRBNode **node,
GtkTreeViewColumn **column);
static GtkTreeViewAccessibleCellInfo* find_cell_info (GtkTreeViewAccessible *view,
GtkCellAccessible *cell);
static AtkObject * get_header_from_column (GtkTreeViewColumn *tv_col);
static void atk_table_interface_init (AtkTableIface *iface);
static void atk_selection_interface_init (AtkSelectionIface *iface);
static void atk_component_interface_init (AtkComponentIface *iface);
static void gtk_cell_accessible_parent_interface_init (GtkCellAccessibleParentIface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkTreeViewAccessible, gtk_tree_view_accessible, GTK_TYPE_CONTAINER_ACCESSIBLE,
G_ADD_PRIVATE (GtkTreeViewAccessible)
G_IMPLEMENT_INTERFACE (ATK_TYPE_TABLE, atk_table_interface_init)
G_IMPLEMENT_INTERFACE (ATK_TYPE_SELECTION, atk_selection_interface_init)
G_IMPLEMENT_INTERFACE (ATK_TYPE_COMPONENT, atk_component_interface_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_ACCESSIBLE_PARENT, gtk_cell_accessible_parent_interface_init))
static GQuark
gtk_tree_view_accessible_get_data_quark (void)
{
static GQuark quark = 0;
if (G_UNLIKELY (quark == 0))
quark = g_quark_from_static_string ("gtk-tree-view-accessible-data");
return quark;
}
static void
cell_info_free (GtkTreeViewAccessibleCellInfo *cell_info)
{
gtk_accessible_set_widget (GTK_ACCESSIBLE (cell_info->cell), NULL);
g_object_unref (cell_info->cell);
g_free (cell_info);
}
static GtkTreePath *
cell_info_get_path (GtkTreeViewAccessibleCellInfo *cell_info)
{
return _gtk_tree_path_new_from_rbtree (cell_info->tree, cell_info->node);
}
static guint
cell_info_hash (gconstpointer info)
{
const GtkTreeViewAccessibleCellInfo *cell_info = info;
guint node, col;
node = GPOINTER_TO_UINT (cell_info->node);
col = GPOINTER_TO_UINT (cell_info->cell_col_ref);
return ((node << sizeof (guint) / 2) | (node >> sizeof (guint) / 2)) ^ col;
}
static gboolean
cell_info_equal (gconstpointer a, gconstpointer b)
{
const GtkTreeViewAccessibleCellInfo *cell_info_a = a;
const GtkTreeViewAccessibleCellInfo *cell_info_b = b;
return cell_info_a->node == cell_info_b->node &&
cell_info_a->cell_col_ref == cell_info_b->cell_col_ref;
}
static void
gtk_tree_view_accessible_initialize (AtkObject *obj,
gpointer data)
{
GtkTreeViewAccessible *accessible;
GtkTreeView *tree_view;
GtkTreeModel *tree_model;
GtkWidget *widget;
ATK_OBJECT_CLASS (gtk_tree_view_accessible_parent_class)->initialize (obj, data);
accessible = GTK_TREE_VIEW_ACCESSIBLE (obj);
accessible->priv->cell_infos = g_hash_table_new_full (cell_info_hash,
cell_info_equal, NULL, (GDestroyNotify) cell_info_free);
widget = GTK_WIDGET (data);
tree_view = GTK_TREE_VIEW (widget);
tree_model = gtk_tree_view_get_model (tree_view);
if (tree_model)
{
if (gtk_tree_model_get_flags (tree_model) & GTK_TREE_MODEL_LIST_ONLY)
obj->role = ATK_ROLE_TABLE;
else
obj->role = ATK_ROLE_TREE_TABLE;
}
}
static void
gtk_tree_view_accessible_finalize (GObject *object)
{
GtkTreeViewAccessible *accessible = GTK_TREE_VIEW_ACCESSIBLE (object);
if (accessible->priv->cell_infos)
g_hash_table_destroy (accessible->priv->cell_infos);
G_OBJECT_CLASS (gtk_tree_view_accessible_parent_class)->finalize (object);
}
static void
gtk_tree_view_accessible_notify_gtk (GObject *obj,
GParamSpec *pspec)
{
GtkWidget *widget;
GtkTreeView *tree_view;
GtkTreeViewAccessible *accessible;
widget = GTK_WIDGET (obj);
accessible = GTK_TREE_VIEW_ACCESSIBLE (gtk_widget_get_accessible (widget));
tree_view = GTK_TREE_VIEW (widget);
if (g_strcmp0 (pspec->name, "model") == 0)
{
GtkTreeModel *tree_model;
AtkRole role;
tree_model = gtk_tree_view_get_model (tree_view);
g_hash_table_remove_all (accessible->priv->cell_infos);
if (tree_model)
{
if (gtk_tree_model_get_flags (tree_model) & GTK_TREE_MODEL_LIST_ONLY)
role = ATK_ROLE_TABLE;
else
role = ATK_ROLE_TREE_TABLE;
}
else
{
role = ATK_ROLE_UNKNOWN;
}
atk_object_set_role (ATK_OBJECT (accessible), role);
g_object_freeze_notify (G_OBJECT (accessible));
g_signal_emit_by_name (accessible, "model-changed");
g_signal_emit_by_name (accessible, "visible-data-changed");
g_object_thaw_notify (G_OBJECT (accessible));
}
else
GTK_WIDGET_ACCESSIBLE_CLASS (gtk_tree_view_accessible_parent_class)->notify_gtk (obj, pspec);
}
static void
gtk_tree_view_accessible_widget_unset (GtkAccessible *gtkaccessible)
{
GtkTreeViewAccessible *accessible = GTK_TREE_VIEW_ACCESSIBLE (gtkaccessible);
g_hash_table_remove_all (accessible->priv->cell_infos);
GTK_ACCESSIBLE_CLASS (gtk_tree_view_accessible_parent_class)->widget_unset (gtkaccessible);
}
static gint
get_n_rows (GtkTreeView *tree_view)
{
GtkRBTree *tree;
tree = _gtk_tree_view_get_rbtree (tree_view);
if (tree == NULL)
return 0;
return tree->root->total_count;
}
static gint
get_n_columns (GtkTreeView *tree_view)
{
guint i, visible_columns;
visible_columns = 0;
for (i = 0; i < gtk_tree_view_get_n_columns (tree_view); i++)
{
GtkTreeViewColumn *column = gtk_tree_view_get_column (tree_view, i);
if (gtk_tree_view_column_get_visible (column))
visible_columns++;
}
return visible_columns;
}
static gint
gtk_tree_view_accessible_get_n_children (AtkObject *obj)
{
GtkWidget *widget;
GtkTreeView *tree_view;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
if (widget == NULL)
return 0;
tree_view = GTK_TREE_VIEW (widget);
return (get_n_rows (tree_view) + 1) * get_n_columns (tree_view);
}
static GtkTreeViewColumn *
get_visible_column (GtkTreeView *tree_view,
guint id)
{
guint i;
for (i = 0; i < gtk_tree_view_get_n_columns (tree_view); i++)
{
GtkTreeViewColumn *column = gtk_tree_view_get_column (tree_view, i);
if (!gtk_tree_view_column_get_visible (column))
continue;
if (id == 0)
return column;
id--;
}
g_return_val_if_reached (NULL);
}
static void
set_cell_data (GtkTreeView *treeview,
GtkTreeViewAccessible *accessible,
GtkCellAccessible *cell)
{
GtkTreeViewAccessibleCellInfo *cell_info;
gboolean is_expander, is_expanded;
GtkTreeModel *model;
GtkTreeIter iter;
GtkTreePath *path;
cell_info = find_cell_info (accessible, cell);
if (!cell_info)
return;
model = gtk_tree_view_get_model (treeview);
if (GTK_RBNODE_FLAG_SET (cell_info->node, GTK_RBNODE_IS_PARENT) &&
cell_info->cell_col_ref == gtk_tree_view_get_expander_column (treeview))
{
is_expander = TRUE;
is_expanded = cell_info->node->children != NULL;
}
else
{
is_expander = FALSE;
is_expanded = FALSE;
}
path = cell_info_get_path (cell_info);
if (path == NULL ||
!gtk_tree_model_get_iter (model, &iter, path))
{
/* We only track valid cells, this should never happen */
g_return_if_reached ();
}
gtk_tree_path_free (path);
gtk_tree_view_column_cell_set_cell_data (cell_info->cell_col_ref,
model,
&iter,
is_expander,
is_expanded);
}
static GtkCellAccessible *
peek_cell (GtkTreeViewAccessible *accessible,
GtkRBTree *tree,
GtkRBNode *node,
GtkTreeViewColumn *column)
{
GtkTreeViewAccessibleCellInfo lookup, *cell_info;
lookup.tree = tree;
lookup.node = node;
lookup.cell_col_ref = column;
cell_info = g_hash_table_lookup (accessible->priv->cell_infos, &lookup);
if (cell_info == NULL)
return NULL;
return cell_info->cell;
}
static GtkCellAccessible *
create_cell_accessible_for_renderer (GtkCellRenderer *renderer,
GtkWidget *widget,
AtkObject *parent)
{
GtkCellAccessible *cell;
cell = GTK_CELL_ACCESSIBLE (gtk_renderer_cell_accessible_new (renderer));
_gtk_cell_accessible_initialize (cell, widget, parent);
return cell;
}
static GtkCellAccessible *
create_cell_accessible (GtkTreeView *treeview,
GtkTreeViewAccessible *accessible,
GtkTreeViewColumn *column)
{
GList *renderer_list;
GList *l;
GtkCellAccessible *cell;
renderer_list = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (column));
/* If there is exactly one renderer in the list (which is a
* common case), shortcut and don't make a container
*/
if (g_list_length (renderer_list) == 1)
{
cell = create_cell_accessible_for_renderer (renderer_list->data, GTK_WIDGET (treeview), ATK_OBJECT (accessible));
}
else
{
GtkContainerCellAccessible *container;
container = gtk_container_cell_accessible_new ();
_gtk_cell_accessible_initialize (GTK_CELL_ACCESSIBLE (container), GTK_WIDGET (treeview), ATK_OBJECT (accessible));
for (l = renderer_list; l; l = l->next)
{
cell = create_cell_accessible_for_renderer (l->data, GTK_WIDGET (treeview), ATK_OBJECT (container));
gtk_container_cell_accessible_add_child (container, cell);
}
cell = GTK_CELL_ACCESSIBLE (container);
}
g_list_free (renderer_list);
return cell;
}
static GtkCellAccessible *
create_cell (GtkTreeView *treeview,
GtkTreeViewAccessible *accessible,
GtkRBTree *tree,
GtkRBNode *node,
GtkTreeViewColumn *column)
{
GtkCellAccessible *cell;
cell = create_cell_accessible (treeview, accessible, column);
cell_info_new (accessible, tree, node, column, cell);
set_cell_data (treeview, accessible, cell);
_gtk_cell_accessible_update_cache (cell);
if (gtk_tree_view_get_expander_column (treeview) == column)
{
AtkRelationSet *relation_set;
AtkRelation* relation;
AtkObject *parent_node;
relation_set = atk_object_ref_relation_set (ATK_OBJECT (cell));
if (tree->parent_tree)
{
parent_node = ATK_OBJECT (peek_cell (accessible, tree->parent_tree, tree->parent_node, column));
if (parent_node == NULL)
parent_node = ATK_OBJECT (create_cell (treeview, accessible, tree->parent_tree, tree->parent_node, column));
}
else
parent_node = ATK_OBJECT (accessible);
relation = atk_relation_new (&parent_node, 1, ATK_RELATION_NODE_CHILD_OF);
atk_relation_set_add (relation_set, relation);
atk_object_add_relationship (parent_node, ATK_RELATION_NODE_PARENT_OF, ATK_OBJECT (cell));
g_object_unref (relation);
g_object_unref (relation_set);
}
return cell;
}
static AtkObject *
gtk_tree_view_accessible_ref_child (AtkObject *obj,
gint i)
{
GtkWidget *widget;
GtkTreeViewAccessible *accessible;
GtkCellAccessible *cell;
GtkTreeView *tree_view;
GtkTreeViewColumn *tv_col;
GtkRBTree *tree;
GtkRBNode *node;
AtkObject *child;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
if (widget == NULL)
return NULL;
if (i >= gtk_tree_view_accessible_get_n_children (obj))
return NULL;
accessible = GTK_TREE_VIEW_ACCESSIBLE (obj);
tree_view = GTK_TREE_VIEW (widget);
if (i < get_n_columns (tree_view))
{
tv_col = get_visible_column (tree_view, i);
child = get_header_from_column (tv_col);
if (child)
g_object_ref (child);
return child;
}
/* Find the RBTree and GtkTreeViewColumn for the index */
if (!get_rbtree_column_from_index (tree_view, i, &tree, &node, &tv_col))
return NULL;
cell = peek_cell (accessible, tree, node, tv_col);
if (cell == NULL)
cell = create_cell (tree_view, accessible, tree, node, tv_col);
return g_object_ref (cell);
}
static AtkStateSet*
gtk_tree_view_accessible_ref_state_set (AtkObject *obj)
{
AtkStateSet *state_set;
GtkWidget *widget;
state_set = ATK_OBJECT_CLASS (gtk_tree_view_accessible_parent_class)->ref_state_set (obj);
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
if (widget != NULL)
atk_state_set_add_state (state_set, ATK_STATE_MANAGES_DESCENDANTS);
return state_set;
}
static void
gtk_tree_view_accessible_class_init (GtkTreeViewAccessibleClass *klass)
{
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkAccessibleClass *accessible_class = (GtkAccessibleClass*)klass;
GtkWidgetAccessibleClass *widget_class = (GtkWidgetAccessibleClass*)klass;
GtkContainerAccessibleClass *container_class = (GtkContainerAccessibleClass*)klass;
class->get_n_children = gtk_tree_view_accessible_get_n_children;
class->ref_child = gtk_tree_view_accessible_ref_child;
class->ref_state_set = gtk_tree_view_accessible_ref_state_set;
class->initialize = gtk_tree_view_accessible_initialize;
widget_class->notify_gtk = gtk_tree_view_accessible_notify_gtk;
accessible_class->widget_unset = gtk_tree_view_accessible_widget_unset;
/* The children of a GtkTreeView are the buttons at the top of the columns
* we do not represent these as children so we do not want to report
* children added or deleted when these changed.
*/
container_class->add_gtk = NULL;
container_class->remove_gtk = NULL;
gobject_class->finalize = gtk_tree_view_accessible_finalize;
}
static void
gtk_tree_view_accessible_init (GtkTreeViewAccessible *view)
{
view->priv = gtk_tree_view_accessible_get_instance_private (view);
}
/* atkcomponent.h */
static AtkObject *
gtk_tree_view_accessible_ref_accessible_at_point (AtkComponent *component,
gint x,
gint y,
AtkCoordType coord_type)
{
GtkWidget *widget;
GtkTreeView *tree_view;
GtkTreePath *path;
GtkTreeViewColumn *column;
gint x_pos, y_pos;
gint bx, by;
GtkCellAccessible *cell;
GtkRBTree *tree;
GtkRBNode *node;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (component));
if (widget == NULL)
return NULL;
tree_view = GTK_TREE_VIEW (widget);
atk_component_get_extents (component, &x_pos, &y_pos, NULL, NULL, coord_type);
gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, x, y, &bx, &by);
if (!gtk_tree_view_get_path_at_pos (tree_view,
bx - x_pos, by - y_pos,
&path, &column, NULL, NULL))
return NULL;
if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
{
gtk_tree_path_free (path);
return NULL;
}
cell = peek_cell (GTK_TREE_VIEW_ACCESSIBLE (component), tree, node, column);
if (cell == NULL)
cell = create_cell (tree_view, GTK_TREE_VIEW_ACCESSIBLE (component), tree, node, column);
return g_object_ref (cell);
}
static void
atk_component_interface_init (AtkComponentIface *iface)
{
iface->ref_accessible_at_point = gtk_tree_view_accessible_ref_accessible_at_point;
}
/* atktable.h */
static gint
gtk_tree_view_accessible_get_index_at (AtkTable *table,
gint row,
gint column)
{
GtkWidget *widget;
gint n_cols, n_rows;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table));
if (widget == NULL)
return -1;
n_cols = atk_table_get_n_columns (table);
n_rows = atk_table_get_n_rows (table);
if (row >= n_rows || column >= n_cols)
return -1;
return (row + 1) * n_cols + column;
}
static gint
gtk_tree_view_accessible_get_column_at_index (AtkTable *table,
gint index)
{
GtkWidget *widget;
gint n_columns;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table));
if (widget == NULL)
return -1;
if (index >= gtk_tree_view_accessible_get_n_children (ATK_OBJECT (table)))
return -1;
n_columns = get_n_columns (GTK_TREE_VIEW (widget));
/* checked by the n_children() check above */
g_assert (n_columns > 0);
return index % n_columns;
}
static gint
gtk_tree_view_accessible_get_row_at_index (AtkTable *table,
gint index)
{
GtkWidget *widget;
GtkTreeView *tree_view;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table));
if (widget == NULL)
return -1;
tree_view = GTK_TREE_VIEW (widget);
index /= get_n_columns (tree_view);
index--;
if (index >= get_n_rows (tree_view))
return -1;
return index;
}
static AtkObject *
gtk_tree_view_accessible_table_ref_at (AtkTable *table,
gint row,
gint column)
{
gint index;
index = gtk_tree_view_accessible_get_index_at (table, row, column);
if (index == -1)
return NULL;
return gtk_tree_view_accessible_ref_child (ATK_OBJECT (table), index);
}
static gint
gtk_tree_view_accessible_get_n_rows (AtkTable *table)
{
GtkWidget *widget;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table));
if (widget == NULL)
return 0;
return get_n_rows (GTK_TREE_VIEW (widget));
}
static gint
gtk_tree_view_accessible_get_n_columns (AtkTable *table)
{
GtkWidget *widget;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table));
if (widget == NULL)
return 0;
return get_n_columns (GTK_TREE_VIEW (widget));
}
static gboolean
gtk_tree_view_accessible_is_row_selected (AtkTable *table,
gint row)
{
GtkWidget *widget;
GtkRBTree *tree;
GtkRBNode *node;
if (row < 0)
return FALSE;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table));
if (widget == NULL)
return FALSE;
if (!_gtk_rbtree_find_index (_gtk_tree_view_get_rbtree (GTK_TREE_VIEW (widget)),
row,
&tree,
&node))
return FALSE;
return GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
}
static gboolean
gtk_tree_view_accessible_is_selected (AtkTable *table,
gint row,
gint column)
{
return gtk_tree_view_accessible_is_row_selected (table, row);
}
typedef struct {
GArray *array;
GtkTreeView *treeview;
} SelectedRowsData;
static void
get_selected_rows (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer datap)
{
SelectedRowsData *data = datap;
GtkRBTree *tree;
GtkRBNode *node;
int id;
if (_gtk_tree_view_find_node (data->treeview,
path,
&tree, &node))
{
g_assert_not_reached ();
}
id = _gtk_rbtree_node_get_index (tree, node);
g_array_append_val (data->array, id);
}
static gint
gtk_tree_view_accessible_get_selected_rows (AtkTable *table,
gint **rows_selected)
{
SelectedRowsData data;
GtkWidget *widget;
gint n_rows;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table));
if (widget == NULL)
{
if (rows_selected != NULL)
*rows_selected = NULL;
return 0;
}
data.treeview = GTK_TREE_VIEW (widget);
data.array = g_array_new (FALSE, FALSE, sizeof (gint));
gtk_tree_selection_selected_foreach (gtk_tree_view_get_selection (data.treeview),
get_selected_rows,
&data);
n_rows = data.array->len;
if (rows_selected)
*rows_selected = (gint *) g_array_free (data.array, FALSE);
else
g_array_free (data.array, TRUE);
return n_rows;
}
static gboolean
gtk_tree_view_accessible_add_row_selection (AtkTable *table,
gint row)
{
GtkTreeView *treeview;
GtkTreePath *path;
GtkRBTree *tree;
GtkRBNode *node;
if (row < 0)
return FALSE;
treeview = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (table)));
if (treeview == NULL)
return FALSE;
if (!_gtk_rbtree_find_index (_gtk_tree_view_get_rbtree (treeview),
row,
&tree,
&node))
return FALSE;
if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
return FALSE;
path = _gtk_tree_path_new_from_rbtree (tree, node);
gtk_tree_selection_select_path (gtk_tree_view_get_selection (treeview), path);
gtk_tree_path_free (path);
return TRUE;
}
static gboolean
gtk_tree_view_accessible_remove_row_selection (AtkTable *table,
gint row)
{
GtkTreeView *treeview;
GtkTreePath *path;
GtkRBTree *tree;
GtkRBNode *node;
if (row < 0)
return FALSE;
treeview = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (table)));
if (treeview == NULL)
return FALSE;
if (!_gtk_rbtree_find_index (_gtk_tree_view_get_rbtree (treeview),
row,
&tree,
&node))
return FALSE;
if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
return FALSE;
path = _gtk_tree_path_new_from_rbtree (tree, node);
gtk_tree_selection_unselect_path (gtk_tree_view_get_selection (treeview), path);
gtk_tree_path_free (path);
return TRUE;
}
static AtkObject *
gtk_tree_view_accessible_get_column_header (AtkTable *table,
gint in_col)
{
GtkWidget *widget;
GtkTreeView *tree_view;
GtkTreeViewColumn *tv_col;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table));
if (widget == NULL)
return NULL;
tree_view = GTK_TREE_VIEW (widget);
if (in_col < 0 || in_col >= get_n_columns (tree_view))
return NULL;
tv_col = get_visible_column (tree_view, in_col);
return get_header_from_column (tv_col);
}
static const gchar *
gtk_tree_view_accessible_get_column_description (AtkTable *table,
gint in_col)
{
GtkWidget *widget;
GtkTreeView *tree_view;
GtkTreeViewColumn *tv_col;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (table));
if (widget == NULL)
return NULL;
tree_view = GTK_TREE_VIEW (widget);
if (in_col < 0 || in_col >= get_n_columns (tree_view))
return NULL;
tv_col = get_visible_column (tree_view, in_col);
return gtk_tree_view_column_get_title (tv_col);
}
static void
atk_table_interface_init (AtkTableIface *iface)
{
iface->ref_at = gtk_tree_view_accessible_table_ref_at;
iface->get_n_rows = gtk_tree_view_accessible_get_n_rows;
iface->get_n_columns = gtk_tree_view_accessible_get_n_columns;
iface->get_index_at = gtk_tree_view_accessible_get_index_at;
iface->get_column_at_index = gtk_tree_view_accessible_get_column_at_index;
iface->get_row_at_index = gtk_tree_view_accessible_get_row_at_index;
iface->is_row_selected = gtk_tree_view_accessible_is_row_selected;
iface->is_selected = gtk_tree_view_accessible_is_selected;
iface->get_selected_rows = gtk_tree_view_accessible_get_selected_rows;
iface->add_row_selection = gtk_tree_view_accessible_add_row_selection;
iface->remove_row_selection = gtk_tree_view_accessible_remove_row_selection;
iface->get_column_extent_at = NULL;
iface->get_row_extent_at = NULL;
iface->get_column_header = gtk_tree_view_accessible_get_column_header;
iface->get_column_description = gtk_tree_view_accessible_get_column_description;
}
/* atkselection.h */
static gboolean
gtk_tree_view_accessible_add_selection (AtkSelection *selection,
gint i)
{
AtkTable *table;
gint n_columns;
gint row;
table = ATK_TABLE (selection);
n_columns = gtk_tree_view_accessible_get_n_columns (table);
if (n_columns != 1)
return FALSE;
row = gtk_tree_view_accessible_get_row_at_index (table, i);
return gtk_tree_view_accessible_add_row_selection (table, row);
}
static gboolean
gtk_tree_view_accessible_clear_selection (AtkSelection *selection)
{
GtkWidget *widget;
GtkTreeView *tree_view;
GtkTreeSelection *tree_selection;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
if (widget == NULL)
return FALSE;
tree_view = GTK_TREE_VIEW (widget);
tree_selection = gtk_tree_view_get_selection (tree_view);
gtk_tree_selection_unselect_all (tree_selection);
return TRUE;
}
static AtkObject *
gtk_tree_view_accessible_ref_selection (AtkSelection *selection,
gint i)
{
AtkTable *table;
gint row;
gint n_selected;
gint n_columns;
gint *selected;
table = ATK_TABLE (selection);
n_columns = gtk_tree_view_accessible_get_n_columns (table);
n_selected = gtk_tree_view_accessible_get_selected_rows (table, &selected);
if (n_columns == 0 || i >= n_columns * n_selected)
return NULL;
row = selected[i / n_columns];
g_free (selected);
return gtk_tree_view_accessible_table_ref_at (table, row, i % n_columns);
}
static gint
gtk_tree_view_accessible_get_selection_count (AtkSelection *selection)
{
AtkTable *table;
gint n_selected;
table = ATK_TABLE (selection);
n_selected = gtk_tree_view_accessible_get_selected_rows (table, NULL);
if (n_selected > 0)
n_selected *= gtk_tree_view_accessible_get_n_columns (table);
return n_selected;
}
static gboolean
gtk_tree_view_accessible_is_child_selected (AtkSelection *selection,
gint i)
{
GtkWidget *widget;
gint row;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
if (widget == NULL)
return FALSE;
row = atk_table_get_row_at_index (ATK_TABLE (selection), i);
return gtk_tree_view_accessible_is_row_selected (ATK_TABLE (selection), row);
}
static void atk_selection_interface_init (AtkSelectionIface *iface)
{
iface->add_selection = gtk_tree_view_accessible_add_selection;
iface->clear_selection = gtk_tree_view_accessible_clear_selection;
iface->ref_selection = gtk_tree_view_accessible_ref_selection;
iface->get_selection_count = gtk_tree_view_accessible_get_selection_count;
iface->is_child_selected = gtk_tree_view_accessible_is_child_selected;
}
#define EXTRA_EXPANDER_PADDING 4
static void
gtk_tree_view_accessible_get_cell_area (GtkCellAccessibleParent *parent,
GtkCellAccessible *cell,
GdkRectangle *cell_rect)
{
GtkWidget *widget;
GtkTreeView *tree_view;
GtkTreeViewColumn *tv_col;
GtkTreePath *path;
AtkObject *parent_cell;
GtkTreeViewAccessibleCellInfo *cell_info;
GtkCellAccessible *top_cell;
/* Default value. */
cell_rect->x = 0;
cell_rect->y = 0;
cell_rect->width = 0;
cell_rect->height = 0;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (parent));
if (widget == NULL)
return;
tree_view = GTK_TREE_VIEW (widget);
parent_cell = atk_object_get_parent (ATK_OBJECT (cell));
if (parent_cell != ATK_OBJECT (parent))
top_cell = GTK_CELL_ACCESSIBLE (parent_cell);
else
top_cell = cell;
cell_info = find_cell_info (GTK_TREE_VIEW_ACCESSIBLE (parent), top_cell);
if (!cell_info)
return;
path = cell_info_get_path (cell_info);
tv_col = cell_info->cell_col_ref;
if (path)
{
GtkTreeViewColumn *expander_column;
gint focus_line_width;
gtk_tree_view_get_cell_area (tree_view, path, tv_col, cell_rect);
expander_column = gtk_tree_view_get_expander_column (tree_view);
if (expander_column == tv_col)
{
gint expander_size;
gtk_widget_style_get (widget,
"expander-size", &expander_size,
NULL);
cell_rect->x += expander_size + EXTRA_EXPANDER_PADDING;
cell_rect->width -= expander_size + EXTRA_EXPANDER_PADDING;
}
gtk_widget_style_get (widget,
"focus-line-width", &focus_line_width,
NULL);
cell_rect->x += focus_line_width;
cell_rect->width -= 2 * focus_line_width;
gtk_tree_path_free (path);
/* A column has more than one renderer so we find the position
* and width of each
*/
if (top_cell != cell)
{
gint cell_index;
gboolean found;
gint cell_start;
gint cell_width;
GList *renderers;
GtkCellRenderer *renderer;
cell_index = atk_object_get_index_in_parent (ATK_OBJECT (cell));
renderers = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (tv_col));
renderer = g_list_nth_data (renderers, cell_index);
found = gtk_tree_view_column_cell_get_position (tv_col, renderer, &cell_start, &cell_width);
if (found)
{
cell_rect->x += cell_start;
cell_rect->width = cell_width;
}
g_list_free (renderers);
}
}
}
static void
gtk_tree_view_accessible_get_cell_extents (GtkCellAccessibleParent *parent,
GtkCellAccessible *cell,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coord_type)
{
GtkWidget *widget;
GtkTreeView *tree_view;
GdkWindow *bin_window;
GdkRectangle cell_rect;
gint w_x, w_y;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (parent));
if (widget == NULL)
return;
tree_view = GTK_TREE_VIEW (widget);
gtk_tree_view_accessible_get_cell_area (parent, cell, &cell_rect);
bin_window = gtk_tree_view_get_bin_window (tree_view);
gdk_window_get_origin (bin_window, &w_x, &w_y);
if (coord_type == ATK_XY_WINDOW)
{
GdkWindow *window;
gint x_toplevel, y_toplevel;
window = gdk_window_get_toplevel (bin_window);
gdk_window_get_origin (window, &x_toplevel, &y_toplevel);
w_x -= x_toplevel;
w_y -= y_toplevel;
}
*width = cell_rect.width;
*height = cell_rect.height;
if (is_cell_showing (tree_view, &cell_rect))
{
*x = cell_rect.x + w_x;
*y = cell_rect.y + w_y;
}
else
{
*x = G_MININT;
*y = G_MININT;
}
}
static gboolean
gtk_tree_view_accessible_grab_cell_focus (GtkCellAccessibleParent *parent,
GtkCellAccessible *cell)
{
GtkWidget *widget;
GtkTreeView *tree_view;
GtkTreeViewColumn *tv_col;
GtkTreePath *path;
AtkObject *parent_cell;
AtkObject *cell_object;
GtkTreeViewAccessibleCellInfo *cell_info;
GtkCellRenderer *renderer = NULL;
GtkWidget *toplevel;
gint index;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (parent));
if (widget == NULL)
return FALSE;
tree_view = GTK_TREE_VIEW (widget);
cell_info = find_cell_info (GTK_TREE_VIEW_ACCESSIBLE (parent), cell);
if (!cell_info)
return FALSE;
cell_object = ATK_OBJECT (cell);
parent_cell = atk_object_get_parent (cell_object);
tv_col = cell_info->cell_col_ref;
if (parent_cell != ATK_OBJECT (parent))
{
/* GtkCellAccessible is in a GtkContainerCellAccessible.
* The GtkTreeViewColumn has multiple renderers;
* find the corresponding one.
*/
GList *renderers;
renderers = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (tv_col));
index = atk_object_get_index_in_parent (cell_object);
renderer = g_list_nth_data (renderers, index);
g_list_free (renderers);
}
path = cell_info_get_path (cell_info);
if (path)
{
if (renderer)
gtk_tree_view_set_cursor_on_cell (tree_view, path, tv_col, renderer, FALSE);
else
gtk_tree_view_set_cursor (tree_view, path, tv_col, FALSE);
gtk_tree_path_free (path);
gtk_widget_grab_focus (widget);
toplevel = gtk_widget_get_toplevel (widget);
if (gtk_widget_is_toplevel (toplevel))
{
#ifdef GDK_WINDOWING_X11
gtk_window_present_with_time (GTK_WINDOW (toplevel),
gdk_x11_get_server_time (gtk_widget_get_window (widget)));
#else
gtk_window_present (GTK_WINDOW (toplevel));
#endif
}
return TRUE;
}
else
return FALSE;
}
static int
gtk_tree_view_accessible_get_child_index (GtkCellAccessibleParent *parent,
GtkCellAccessible *cell)
{
GtkTreeViewAccessibleCellInfo *cell_info;
GtkTreeView *tree_view;
cell_info = find_cell_info (GTK_TREE_VIEW_ACCESSIBLE (parent), cell);
if (!cell_info)
return -1;
tree_view = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (parent)));
return cell_info_get_index (tree_view, cell_info);
}
static GtkCellRendererState
gtk_tree_view_accessible_get_renderer_state (GtkCellAccessibleParent *parent,
GtkCellAccessible *cell)
{
GtkTreeViewAccessibleCellInfo *cell_info;
GtkTreeView *treeview;
GtkCellRendererState flags;
cell_info = find_cell_info (GTK_TREE_VIEW_ACCESSIBLE (parent), cell);
if (!cell_info)
return 0;
flags = 0;
if (GTK_RBNODE_FLAG_SET (cell_info->node, GTK_RBNODE_IS_SELECTED))
flags |= GTK_CELL_RENDERER_SELECTED;
if (GTK_RBNODE_FLAG_SET (cell_info->node, GTK_RBNODE_IS_PRELIT))
flags |= GTK_CELL_RENDERER_PRELIT;
if (gtk_tree_view_column_get_sort_indicator (cell_info->cell_col_ref))
flags |= GTK_CELL_RENDERER_SORTED;
treeview = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (parent)));
if (cell_info->cell_col_ref == gtk_tree_view_get_expander_column (treeview))
{
if (GTK_RBNODE_FLAG_SET (cell_info->node, GTK_RBNODE_IS_PARENT))
flags |= GTK_CELL_RENDERER_EXPANDABLE;
if (cell_info->node->children)
flags |= GTK_CELL_RENDERER_EXPANDED;
}
if (gtk_widget_has_focus (GTK_WIDGET (treeview)))
{
GtkTreeViewColumn *column;
GtkTreePath *path;
GtkRBTree *tree;
GtkRBNode *node = NULL;
gtk_tree_view_get_cursor (treeview, &path, &column);
if (path)
{
_gtk_tree_view_find_node (treeview, path, &tree, &node);
gtk_tree_path_free (path);
}
else
tree = NULL;
if (cell_info->cell_col_ref == column
&& cell_info->tree == tree
&& cell_info->node == node)
flags |= GTK_CELL_RENDERER_FOCUSED;
}
return flags;
}
static void
gtk_tree_view_accessible_expand_collapse (GtkCellAccessibleParent *parent,
GtkCellAccessible *cell)
{
GtkTreeViewAccessibleCellInfo *cell_info;
GtkTreeView *treeview;
GtkTreePath *path;
treeview = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (parent)));
cell_info = find_cell_info (GTK_TREE_VIEW_ACCESSIBLE (parent), cell);
if (!cell_info ||
cell_info->cell_col_ref != gtk_tree_view_get_expander_column (treeview))
return;
path = cell_info_get_path (cell_info);
if (cell_info->node->children)
gtk_tree_view_collapse_row (treeview, path);
else
gtk_tree_view_expand_row (treeview, path, FALSE);
gtk_tree_path_free (path);
}
static void
gtk_tree_view_accessible_activate (GtkCellAccessibleParent *parent,
GtkCellAccessible *cell)
{
GtkTreeViewAccessibleCellInfo *cell_info;
GtkTreeView *treeview;
GtkTreePath *path;
treeview = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (parent)));
cell_info = find_cell_info (GTK_TREE_VIEW_ACCESSIBLE (parent), cell);
if (!cell_info)
return;
path = cell_info_get_path (cell_info);
gtk_tree_view_row_activated (treeview, path, cell_info->cell_col_ref);
gtk_tree_path_free (path);
}
static void
gtk_tree_view_accessible_edit (GtkCellAccessibleParent *parent,
GtkCellAccessible *cell)
{
GtkTreeView *treeview;
if (!gtk_tree_view_accessible_grab_cell_focus (parent, cell))
return;
treeview = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (parent)));
g_signal_emit_by_name (treeview,
"real-select-cursor-row",
TRUE);
}
static void
gtk_cell_accessible_parent_interface_init (GtkCellAccessibleParentIface *iface)
{
iface->get_cell_extents = gtk_tree_view_accessible_get_cell_extents;
iface->get_cell_area = gtk_tree_view_accessible_get_cell_area;
iface->grab_focus = gtk_tree_view_accessible_grab_cell_focus;
iface->get_child_index = gtk_tree_view_accessible_get_child_index;
iface->get_renderer_state = gtk_tree_view_accessible_get_renderer_state;
iface->expand_collapse = gtk_tree_view_accessible_expand_collapse;
iface->activate = gtk_tree_view_accessible_activate;
iface->edit = gtk_tree_view_accessible_edit;
}
void
_gtk_tree_view_accessible_reorder (GtkTreeView *treeview)
{
GtkTreeViewAccessible *accessible;
accessible = GTK_TREE_VIEW_ACCESSIBLE (_gtk_widget_peek_accessible (GTK_WIDGET (treeview)));
if (accessible == NULL)
return;
g_signal_emit_by_name (accessible, "row-reordered");
}
static gboolean
is_cell_showing (GtkTreeView *tree_view,
GdkRectangle *cell_rect)
{
GdkRectangle rect, *visible_rect;
GdkRectangle rect1, *tree_cell_rect;
gint bx, by;
gboolean is_showing;
/* A cell is considered "SHOWING" if any part of the cell is
* in the visible area. Other ways we could do this is by a
* cell's midpoint or if the cell is fully in the visible range.
* Since we have the cell_rect x, y, width, height of the cell,
* any of these is easy to compute.
*
* It is assumed that cell's rectangle is in widget coordinates
* so we must transform to tree cordinates.
*/
visible_rect = &rect;
tree_cell_rect = &rect1;
tree_cell_rect->x = cell_rect->x;
tree_cell_rect->y = cell_rect->y;
tree_cell_rect->width = cell_rect->width;
tree_cell_rect->height = cell_rect->height;
gtk_tree_view_get_visible_rect (tree_view, visible_rect);
gtk_tree_view_convert_tree_to_bin_window_coords (tree_view, visible_rect->x,
visible_rect->y, &bx, &by);
if (((tree_cell_rect->x + tree_cell_rect->width) < bx) ||
((tree_cell_rect->y + tree_cell_rect->height) < by) ||
(tree_cell_rect->x > (bx + visible_rect->width)) ||
(tree_cell_rect->y > (by + visible_rect->height)))
is_showing = FALSE;
else
is_showing = TRUE;
return is_showing;
}
/* Misc Private */
static int
cell_info_get_index (GtkTreeView *tree_view,
GtkTreeViewAccessibleCellInfo *info)
{
int index;
index = _gtk_rbtree_node_get_index (info->tree, info->node) + 1;
index *= get_n_columns (tree_view);
index += get_column_number (tree_view, info->cell_col_ref);
return index;
}
static void
cell_info_new (GtkTreeViewAccessible *accessible,
GtkRBTree *tree,
GtkRBNode *node,
GtkTreeViewColumn *tv_col,
GtkCellAccessible *cell)
{
GtkTreeViewAccessibleCellInfo *cell_info;
cell_info = g_new (GtkTreeViewAccessibleCellInfo, 1);
cell_info->tree = tree;
cell_info->node = node;
cell_info->cell_col_ref = tv_col;
cell_info->cell = cell;
cell_info->view = accessible;
g_object_set_qdata (G_OBJECT (cell),
gtk_tree_view_accessible_get_data_quark (),
cell_info);
g_hash_table_replace (accessible->priv->cell_infos, cell_info, cell_info);
}
/* Returns the column number of the specified GtkTreeViewColumn
* The column must be visible.
*/
static gint
get_column_number (GtkTreeView *treeview,
GtkTreeViewColumn *column)
{
GtkTreeViewColumn *cur;
guint i, number;
number = 0;
for (i = 0; i < gtk_tree_view_get_n_columns (treeview); i++)
{
cur = gtk_tree_view_get_column (treeview, i);
if (!gtk_tree_view_column_get_visible (cur))
continue;
if (cur == column)
break;
number++;
}
g_return_val_if_fail (i < gtk_tree_view_get_n_columns (treeview), 0);
return number;
}
static gboolean
get_rbtree_column_from_index (GtkTreeView *tree_view,
gint index,
GtkRBTree **tree,
GtkRBNode **node,
GtkTreeViewColumn **column)
{
guint n_columns = get_n_columns (tree_view);
if (n_columns == 0)
return FALSE;
/* First row is the column headers */
index -= n_columns;
if (index < 0)
return FALSE;
if (tree)
{
g_return_val_if_fail (node != NULL, FALSE);
if (!_gtk_rbtree_find_index (_gtk_tree_view_get_rbtree (tree_view),
index / n_columns,
tree,
node))
return FALSE;
}
if (column)
{
*column = get_visible_column (tree_view, index % n_columns);
if (*column == NULL)
return FALSE;
}
return TRUE;
}
static GtkTreeViewAccessibleCellInfo *
find_cell_info (GtkTreeViewAccessible *accessible,
GtkCellAccessible *cell)
{
AtkObject *parent;
parent = atk_object_get_parent (ATK_OBJECT (cell));
while (parent != ATK_OBJECT (accessible))
{
cell = GTK_CELL_ACCESSIBLE (parent);
parent = atk_object_get_parent (ATK_OBJECT (cell));
}
return g_object_get_qdata (G_OBJECT (cell),
gtk_tree_view_accessible_get_data_quark ());
}
static AtkObject *
get_header_from_column (GtkTreeViewColumn *tv_col)
{
AtkObject *rc;
GtkWidget *header_widget;
if (tv_col == NULL)
return NULL;
header_widget = gtk_tree_view_column_get_button (tv_col);
if (header_widget)
rc = gtk_widget_get_accessible (header_widget);
else
rc = NULL;
return rc;
}
void
_gtk_tree_view_accessible_add (GtkTreeView *treeview,
GtkRBTree *tree,
GtkRBNode *node)
{
GtkTreeViewAccessible *accessible;
guint row, n_rows, n_cols, i;
accessible = GTK_TREE_VIEW_ACCESSIBLE (_gtk_widget_peek_accessible (GTK_WIDGET (treeview)));
if (accessible == NULL)
return;
if (node == NULL)
{
row = tree->parent_tree ? _gtk_rbtree_node_get_index (tree->parent_tree, tree->parent_node) : 0;
n_rows = tree->root->total_count;
}
else
{
row = _gtk_rbtree_node_get_index (tree, node);
n_rows = 1 + (node->children ? node->children->root->total_count : 0);
}
g_signal_emit_by_name (accessible, "row-inserted", row, n_rows);
n_cols = get_n_columns (treeview);
if (n_cols)
{
for (i = (row + 1) * n_cols; i < (row + n_rows + 1) * n_cols; i++)
{
/* Pass NULL as the child object, i.e. 4th argument */
g_signal_emit_by_name (accessible, "children-changed::add", i, NULL, NULL);
}
}
}
void
_gtk_tree_view_accessible_remove (GtkTreeView *treeview,
GtkRBTree *tree,
GtkRBNode *node)
{
GtkTreeViewAccessibleCellInfo *cell_info;
GHashTableIter iter;
GtkTreeViewAccessible *accessible;
guint row, n_rows, n_cols, i;
accessible = GTK_TREE_VIEW_ACCESSIBLE (_gtk_widget_peek_accessible (GTK_WIDGET (treeview)));
if (accessible == NULL)
return;
/* if this shows up in profiles, special-case node->children == NULL */
if (node == NULL)
{
row = tree->parent_tree ? _gtk_rbtree_node_get_index (tree->parent_tree, tree->parent_node) : 0;
n_rows = tree->root->total_count + 1;
}
else
{
row = _gtk_rbtree_node_get_index (tree, node);
n_rows = 1 + (node->children ? node->children->root->total_count : 0);
tree = node->children;
}
g_signal_emit_by_name (accessible, "row-deleted", row, n_rows);
n_cols = get_n_columns (treeview);
if (n_cols)
{
for (i = (n_rows + row + 1) * n_cols - 1; i >= (row + 1) * n_cols; i--)
{
/* Pass NULL as the child object, i.e. 4th argument */
g_signal_emit_by_name (accessible, "children-changed::remove", i, NULL, NULL);
}
g_hash_table_iter_init (&iter, accessible->priv->cell_infos);
while (g_hash_table_iter_next (&iter, NULL, (gpointer *)&cell_info))
{
if (node == cell_info->node ||
tree == cell_info->tree ||
(tree && _gtk_rbtree_contains (tree, cell_info->tree)))
g_hash_table_iter_remove (&iter);
}
}
}
void
_gtk_tree_view_accessible_changed (GtkTreeView *treeview,
GtkRBTree *tree,
GtkRBNode *node)
{
GtkTreeViewAccessible *accessible;
guint i;
accessible = GTK_TREE_VIEW_ACCESSIBLE (gtk_widget_get_accessible (GTK_WIDGET (treeview)));
for (i = 0; i < gtk_tree_view_get_n_columns (treeview); i++)
{
GtkCellAccessible *cell = peek_cell (accessible,
tree, node,
gtk_tree_view_get_column (treeview, i));
if (cell == NULL)
continue;
set_cell_data (treeview, accessible, cell);
_gtk_cell_accessible_update_cache (cell);
}
g_signal_emit_by_name (accessible, "visible-data-changed");
}
/* NB: id is not checked, only columns < id are.
* This is important so the function works for notification of removal of a column */
static guint
to_visible_column_id (GtkTreeView *treeview,
guint id)
{
guint i;
guint invisible;
invisible = 0;
for (i = 0; i < id; i++)
{
GtkTreeViewColumn *column = gtk_tree_view_get_column (treeview, i);
if (!gtk_tree_view_column_get_visible (column))
invisible++;
}
return id - invisible;
}
static void
gtk_tree_view_accessible_do_add_column (GtkTreeViewAccessible *accessible,
GtkTreeView *treeview,
GtkTreeViewColumn *column,
guint id)
{
guint row, n_rows, n_cols;
/* Generate column-inserted signal */
g_signal_emit_by_name (accessible, "column-inserted", id, 1);
n_rows = get_n_rows (treeview);
n_cols = get_n_columns (treeview);
/* Generate children-changed signals */
for (row = 0; row <= n_rows; row++)
{
/* Pass NULL as the child object, i.e. 4th argument */
g_signal_emit_by_name (accessible, "children-changed::add",
(row * n_cols) + id, NULL, NULL);
}
}
void
_gtk_tree_view_accessible_add_column (GtkTreeView *treeview,
GtkTreeViewColumn *column,
guint id)
{
AtkObject *obj;
if (!gtk_tree_view_column_get_visible (column))
return;
obj = _gtk_widget_peek_accessible (GTK_WIDGET (treeview));
if (obj == NULL)
return;
gtk_tree_view_accessible_do_add_column (GTK_TREE_VIEW_ACCESSIBLE (obj),
treeview,
column,
to_visible_column_id (treeview, id));
}
static void
gtk_tree_view_accessible_do_remove_column (GtkTreeViewAccessible *accessible,
GtkTreeView *treeview,
GtkTreeViewColumn *column,
guint id)
{
GtkTreeViewAccessibleCellInfo *cell_info;
GHashTableIter iter;
gpointer value;
guint row, n_rows, n_cols;
/* Clean column from cache */
g_hash_table_iter_init (&iter, accessible->priv->cell_infos);
while (g_hash_table_iter_next (&iter, NULL, &value))
{
cell_info = value;
if (cell_info->cell_col_ref == column)
g_hash_table_iter_remove (&iter);
}
/* Generate column-deleted signal */
g_signal_emit_by_name (accessible, "column-deleted", id, 1);
n_rows = get_n_rows (treeview);
n_cols = get_n_columns (treeview);
/* Generate children-changed signals */
for (row = 0; row <= n_rows; row++)
{
/* Pass NULL as the child object, 4th argument */
g_signal_emit_by_name (accessible, "children-changed::remove",
(row * n_cols) + id, NULL, NULL);
}
}
void
_gtk_tree_view_accessible_remove_column (GtkTreeView *treeview,
GtkTreeViewColumn *column,
guint id)
{
AtkObject *obj;
if (!gtk_tree_view_column_get_visible (column))
return;
obj = _gtk_widget_peek_accessible (GTK_WIDGET (treeview));
if (obj == NULL)
return;
gtk_tree_view_accessible_do_remove_column (GTK_TREE_VIEW_ACCESSIBLE (obj),
treeview,
column,
to_visible_column_id (treeview, id));
}
void
_gtk_tree_view_accessible_reorder_column (GtkTreeView *treeview,
GtkTreeViewColumn *column)
{
AtkObject *obj;
obj = _gtk_widget_peek_accessible (GTK_WIDGET (treeview));
if (obj == NULL)
return;
g_signal_emit_by_name (obj, "column-reordered");
}
void
_gtk_tree_view_accessible_toggle_visibility (GtkTreeView *treeview,
GtkTreeViewColumn *column)
{
AtkObject *obj;
guint i, id;
obj = _gtk_widget_peek_accessible (GTK_WIDGET (treeview));
if (obj == NULL)
return;
if (gtk_tree_view_column_get_visible (column))
{
id = get_column_number (treeview, column);
gtk_tree_view_accessible_do_add_column (GTK_TREE_VIEW_ACCESSIBLE (obj),
treeview,
column,
id);
}
else
{
id = 0;
for (i = 0; i < gtk_tree_view_get_n_columns (treeview); i++)
{
GtkTreeViewColumn *cur = gtk_tree_view_get_column (treeview, i);
if (gtk_tree_view_column_get_visible (cur))
id++;
if (cur == column)
break;
}
gtk_tree_view_accessible_do_remove_column (GTK_TREE_VIEW_ACCESSIBLE (obj),
treeview,
column,
id);
}
}
static GtkTreeViewColumn *
get_effective_focus_column (GtkTreeView *treeview,
GtkTreeViewColumn *column)
{
if (column == NULL)
column = get_visible_column (treeview, 0);
return column;
}
void
_gtk_tree_view_accessible_update_focus_column (GtkTreeView *treeview,
GtkTreeViewColumn *old_focus,
GtkTreeViewColumn *new_focus)
{
GtkTreeViewAccessible *accessible;
AtkObject *obj;
GtkRBTree *cursor_tree;
GtkRBNode *cursor_node;
GtkCellAccessible *cell;
old_focus = get_effective_focus_column (treeview, old_focus);
new_focus = get_effective_focus_column (treeview, new_focus);
if (old_focus == new_focus)
return;
obj = _gtk_widget_peek_accessible (GTK_WIDGET (treeview));
if (obj == NULL)
return;
accessible = GTK_TREE_VIEW_ACCESSIBLE (obj);
if (!_gtk_tree_view_get_cursor_node (treeview, &cursor_tree, &cursor_node))
return;
if (old_focus)
{
cell = peek_cell (accessible, cursor_tree, cursor_node, old_focus);
if (cell != NULL)
_gtk_cell_accessible_state_changed (cell, GTK_CELL_RENDERER_FOCUSED, 0);
}
if (new_focus)
{
cell = peek_cell (accessible, cursor_tree, cursor_node, new_focus);
if (cell != NULL)
_gtk_cell_accessible_state_changed (cell, 0, GTK_CELL_RENDERER_FOCUSED);
else
cell = create_cell (treeview, accessible, cursor_tree, cursor_node, new_focus);
g_signal_emit_by_name (accessible, "active-descendant-changed", cell);
}
}
void
_gtk_tree_view_accessible_add_state (GtkTreeView *treeview,
GtkRBTree *tree,
GtkRBNode *node,
GtkCellRendererState state)
{
GtkTreeViewAccessible *accessible;
GtkTreeViewColumn *single_column;
AtkObject *obj;
guint i;
obj = _gtk_widget_peek_accessible (GTK_WIDGET (treeview));
if (obj == NULL)
return;
accessible = GTK_TREE_VIEW_ACCESSIBLE (obj);
if (state == GTK_CELL_RENDERER_FOCUSED)
{
single_column = get_effective_focus_column (treeview, _gtk_tree_view_get_focus_column (treeview));
}
else if (state == GTK_CELL_RENDERER_EXPANDED ||
state == GTK_CELL_RENDERER_EXPANDABLE)
{
single_column = gtk_tree_view_get_expander_column (treeview);
}
else
single_column = NULL;
if (single_column)
{
GtkCellAccessible *cell = peek_cell (accessible,
tree, node,
single_column);
if (cell != NULL)
_gtk_cell_accessible_state_changed (cell, state, 0);
if (state == GTK_CELL_RENDERER_FOCUSED)
{
if (cell == NULL)
cell = create_cell (treeview, accessible, tree, node, single_column);
g_signal_emit_by_name (accessible, "active-descendant-changed", cell);
}
}
else
{
for (i = 0; i < gtk_tree_view_get_n_columns (treeview); i++)
{
GtkCellAccessible *cell = peek_cell (accessible,
tree, node,
gtk_tree_view_get_column (treeview, i));
if (cell == NULL)
continue;
_gtk_cell_accessible_state_changed (cell, state, 0);
}
}
if (state == GTK_CELL_RENDERER_SELECTED)
g_signal_emit_by_name (accessible, "selection-changed");
}
void
_gtk_tree_view_accessible_remove_state (GtkTreeView *treeview,
GtkRBTree *tree,
GtkRBNode *node,
GtkCellRendererState state)
{
GtkTreeViewAccessible *accessible;
GtkTreeViewColumn *single_column;
AtkObject *obj;
guint i;
obj = _gtk_widget_peek_accessible (GTK_WIDGET (treeview));
if (obj == NULL)
return;
accessible = GTK_TREE_VIEW_ACCESSIBLE (obj);
if (state == GTK_CELL_RENDERER_FOCUSED)
{
single_column = get_effective_focus_column (treeview, _gtk_tree_view_get_focus_column (treeview));
}
else if (state == GTK_CELL_RENDERER_EXPANDED ||
state == GTK_CELL_RENDERER_EXPANDABLE)
{
single_column = gtk_tree_view_get_expander_column (treeview);
}
else
single_column = NULL;
if (single_column)
{
GtkCellAccessible *cell = peek_cell (accessible,
tree, node,
single_column);
if (cell != NULL)
_gtk_cell_accessible_state_changed (cell, 0, state);
}
else
{
for (i = 0; i < gtk_tree_view_get_n_columns (treeview); i++)
{
GtkCellAccessible *cell = peek_cell (accessible,
tree, node,
gtk_tree_view_get_column (treeview, i));
if (cell == NULL)
continue;
_gtk_cell_accessible_state_changed (cell, 0, state);
}
}
if (state == GTK_CELL_RENDERER_SELECTED)
g_signal_emit_by_name (accessible, "selection-changed");
}
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