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treeview: Call a11y functions for culmn changes directly

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This way, the a11y code knows if a column was reordered, added or
removed and can do the right things instead of trying to guess and
getting it wrong.

Also, this patch finalizes the changes so that only visible columns
exist to the accessibility interface.
This commit is contained in:
Benjamin Otte 2011-11-16 03:47:33 +01:00
parent 5041286166
commit a4b88c47cd
4 changed files with 205 additions and 227 deletions
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396
gtk/a11y/gtktreeviewaccessible.c
View File

@ -58,16 +58,11 @@ static void size_allocate_cb (GtkWidget *widget,
static void selection_changed_cb (GtkTreeSelection *selection,
gpointer data);
static void columns_changed (GtkTreeView *tree_view);
static void cursor_changed (GtkTreeView *tree_view,
GtkTreeViewAccessible *accessible);
static gboolean focus_in (GtkWidget *widget);
static gboolean focus_out (GtkWidget *widget);
static void column_visibility_changed
(GObject *object,
GParamSpec *param,
gpointer user_data);
static void destroy_count_func (GtkTreeView *tree_view,
GtkTreePath *path,
gint count,
@ -263,14 +258,12 @@ gtk_tree_view_accessible_initialize (AtkObject *obj,
GtkTreeViewAccessible *accessible;
GtkTreeView *tree_view;
GtkTreeModel *tree_model;
GList *tv_cols, *tmp_list;
GtkWidget *widget;
GtkTreeSelection *selection;
ATK_OBJECT_CLASS (_gtk_tree_view_accessible_parent_class)->initialize (obj, data);
accessible = GTK_TREE_VIEW_ACCESSIBLE (obj);
accessible->col_data = NULL;
accessible->focus_cell = NULL;
accessible->old_hadj = NULL;
accessible->old_vadj = NULL;
@ -295,8 +288,6 @@ gtk_tree_view_accessible_initialize (AtkObject *obj,
g_signal_connect (selection, "changed",
G_CALLBACK (selection_changed_cb), obj);
g_signal_connect (tree_view, "columns-changed",
G_CALLBACK (columns_changed), NULL);
g_signal_connect (tree_view, "cursor-changed",
G_CALLBACK (cursor_changed), accessible);
g_signal_connect (tree_view, "focus-in-event",
@ -305,7 +296,6 @@ gtk_tree_view_accessible_initialize (AtkObject *obj,
G_CALLBACK (focus_out), NULL);
accessible->tree_model = tree_model;
accessible->n_cols = 0;
if (tree_model)
{
g_object_add_weak_pointer (G_OBJECT (accessible->tree_model), (gpointer *)&accessible->tree_model);
@ -324,19 +314,6 @@ gtk_tree_view_accessible_initialize (AtkObject *obj,
g_signal_connect (widget, "notify::vadjustment",
G_CALLBACK (vadjustment_set_cb), accessible);
accessible->col_data = g_array_sized_new (FALSE, TRUE,
sizeof (GtkTreeViewColumn *), 0);
tv_cols = gtk_tree_view_get_columns (tree_view);
for (tmp_list = tv_cols; tmp_list; tmp_list = tmp_list->next)
{
accessible->n_cols++;
g_signal_connect (tmp_list->data, "notify::visible",
G_CALLBACK (column_visibility_changed), tree_view);
g_array_append_val (accessible->col_data, tmp_list->data);
}
g_list_free (tv_cols);
gtk_tree_view_set_destroy_count_func (tree_view,
destroy_count_func,
NULL, NULL);
@ -357,17 +334,6 @@ gtk_tree_view_accessible_finalize (GObject *object)
if (accessible->cell_infos)
g_hash_table_destroy (accessible->cell_infos);
if (accessible->col_data)
{
GArray *array = accessible->col_data;
/* No need to free the contents of the array since it
* just contains pointers to the GtkTreeViewColumn
* objects that are in the GtkTreeView.
*/
g_array_free (array, TRUE);
}
G_OBJECT_CLASS (_gtk_tree_view_accessible_parent_class)->finalize (object);
}
@ -1767,126 +1733,6 @@ selection_changed_cb (GtkTreeSelection *selection,
g_signal_emit_by_name (accessible, "selection-changed");
}
static void
columns_changed (GtkTreeView *tree_view)
{
AtkObject *atk_obj;
GtkTreeViewAccessible *accessible;
GList *tv_cols, *tmp_list;
gboolean column_found;
gboolean move_found = FALSE;
gint column_count = 0;
gint i;
atk_obj = gtk_widget_get_accessible (GTK_WIDGET(tree_view));
accessible = GTK_TREE_VIEW_ACCESSIBLE (atk_obj);
/* This function must determine if the change is an add, delete
* or a move based upon its cache of TreeViewColumns in
* accessible->col_data
*/
tv_cols = gtk_tree_view_get_columns (tree_view);
accessible->n_cols = g_list_length (tv_cols);
/* check for adds or moves */
for (tmp_list = tv_cols; tmp_list; tmp_list = tmp_list->next)
{
column_found = FALSE;
for (i = 0; i < accessible->col_data->len; i++)
{
if ((GtkTreeViewColumn *)tmp_list->data ==
(GtkTreeViewColumn *)g_array_index (accessible->col_data,
GtkTreeViewColumn *, i))
{
column_found = TRUE;
/* If the column isn't in the same position, a move happened */
if (!move_found && i != column_count)
{
/* Just emit one column reordered signal when a move happens */
g_signal_emit_by_name (atk_obj, "column-reordered");
move_found = TRUE;
}
break;
}
}
/* If column_found is FALSE, then an insert happened for column
* number column_count
*/
if (!column_found)
{
gint row;
/* Generate column-inserted signal */
g_signal_emit_by_name (atk_obj, "column-inserted", column_count, 1);
/* Generate children-changed signals */
for (row = 0; row < get_n_rows (tree_view); row++)
{
/* Pass NULL as the child object, i.e. 4th argument */
g_signal_emit_by_name (atk_obj, "children-changed::add",
((row * accessible->n_cols) + column_count), NULL, NULL);
}
}
column_count++;
}
/* check for deletes */
for (i = 0; i < accessible->col_data->len; i++)
{
column_found = FALSE;
for (tmp_list = tv_cols; tmp_list; tmp_list = tmp_list->next)
{
if ((GtkTreeViewColumn *)tmp_list->data ==
(GtkTreeViewColumn *)g_array_index (accessible->col_data,
GtkTreeViewColumn *, i))
{
column_found = TRUE;
break;
}
}
/* If column_found is FALSE, then a delete happened for column
* number i
*/
if (!column_found)
{
gint row;
clean_cols (accessible,
(GtkTreeViewColumn *)g_array_index (accessible->col_data,
GtkTreeViewColumn *, i));
/* Generate column-deleted signal */
g_signal_emit_by_name (atk_obj, "column-deleted", i, 1);
/* Generate children-changed signals */
for (row = 0; row < get_n_rows (tree_view); row++)
{
/* Pass NULL as the child object, 4th argument */
g_signal_emit_by_name (atk_obj, "children-changed::remove",
((row * accessible->n_cols) + column_count), NULL, NULL);
}
}
}
traverse_cells (accessible, NULL, FALSE);
/* rebuild the array */
g_array_free (accessible->col_data, TRUE);
accessible->col_data = g_array_sized_new (FALSE, TRUE, sizeof (GtkTreeViewColumn *), 0);
for (tmp_list = tv_cols; tmp_list; tmp_list = tmp_list->next)
g_array_append_val (accessible->col_data, tmp_list->data);
g_list_free (tv_cols);
}
static void
cursor_changed (GtkTreeView *tree_view,
GtkTreeViewAccessible *accessible)
@ -2003,53 +1849,6 @@ model_row_changed (GtkTreeModel *tree_model,
g_signal_emit_by_name (accessible, "visible-data-changed");
}
static void
column_visibility_changed (GObject *object,
GParamSpec *pspec,
gpointer user_data)
{
if (g_strcmp0 (pspec->name, "visible") == 0)
{
/* A column has been made visible or invisible
* We update our cache of cells and emit model_changed signal
*/
GtkTreeView *tree_view = (GtkTreeView *)user_data;
GtkTreeViewAccessible *accessible;
GtkTreeViewAccessibleCellInfo *cell_info;
GtkTreeViewColumn *this_col = GTK_TREE_VIEW_COLUMN (object);
GtkTreeViewColumn *tv_col;
GHashTableIter iter;
accessible = GTK_TREE_VIEW_ACCESSIBLE (gtk_widget_get_accessible (GTK_WIDGET (tree_view))
);
g_signal_emit_by_name (accessible, "model-changed");
g_hash_table_iter_init (&iter, accessible->cell_infos);
while (g_hash_table_iter_next (&iter, NULL, (gpointer *)&cell_info))
{
tv_col = cell_info->cell_col_ref;
if (tv_col == this_col)
{
GtkTreePath *row_path;
row_path = cell_info_get_path (cell_info);
if (GTK_IS_RENDERER_CELL_ACCESSIBLE (cell_info->cell))
{
if (gtk_tree_view_column_get_visible (tv_col))
set_cell_visibility (tree_view,
cell_info->cell,
tv_col, row_path, FALSE);
else
{
_gtk_cell_accessible_remove_state (cell_info->cell, ATK_STATE_VISIBLE, TRUE);
_gtk_cell_accessible_remove_state (cell_info->cell, ATK_STATE_SHOWING, TRUE);
}
}
gtk_tree_path_free (row_path);
}
}
}
}
static void
model_row_inserted (GtkTreeModel *tree_model,
GtkTreePath *path,
@ -3053,37 +2852,33 @@ disconnect_model_signals (GtkTreeViewAccessible *accessible)
}
/* Returns the column number of the specified GtkTreeViewColumn
*
* If visible is set, the value returned will be the visible column number,
* i.e. suitable for use in AtkTable function. If visible is not set, the
* value returned is the actual column number, which is suitable for use in
* getting an index value.
* The column must be visible.
*/
static gint
get_column_number (GtkTreeView *tree_view,
get_column_number (GtkTreeView *treeview,
GtkTreeViewColumn *column)
{
GtkTreeViewColumn *tv_column;
gint ret_val;
gint i;
AtkObject *atk_obj;
GtkTreeViewAccessible *accessible;
GtkTreeViewColumn *cur;
guint i, number;
atk_obj = gtk_widget_get_accessible (GTK_WIDGET (tree_view));
accessible = GTK_TREE_VIEW_ACCESSIBLE (atk_obj);
number = 0;
ret_val = 0;
for (i = 0; i < accessible->col_data->len; i++)
for (i = 0; i < gtk_tree_view_get_n_columns (treeview); i++)
{
tv_column = g_array_index (accessible->col_data, GtkTreeViewColumn *, i);
if (tv_column == column)
break;
ret_val++;
}
if (i == accessible->col_data->len)
ret_val = -1;
cur = gtk_tree_view_get_column (treeview, i);
if (!gtk_tree_view_column_get_visible (cur))
continue;
return ret_val;
if (cur == column)
break;
number++;
}
g_return_val_if_fail (i < gtk_tree_view_get_n_columns (treeview), 0);
return number;
}
static gint
@ -3314,3 +3109,156 @@ _gtk_tree_view_accessible_remove (GtkTreeView *treeview,
}
}
/* NB: id is not checked, only columns < id are.
* This is important so the function works for notification of removal of a column */
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;
}
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);
}
traverse_cells (accessible, NULL, FALSE);
}
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));
}
void
_gtk_tree_view_accessible_do_remove_column (GtkTreeViewAccessible *accessible,
GtkTreeView *treeview,
GtkTreeViewColumn *column,
guint id)
{
guint row, n_rows, n_cols;
clean_cols (accessible, column);
/* 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);
}
traverse_cells (accessible, NULL, FALSE);
}
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");
traverse_cells (GTK_TREE_VIEW_ACCESSIBLE (obj), NULL, FALSE);
}
void
_gtk_tree_view_accessible_toggle_visibility (GtkTreeView *treeview,
GtkTreeViewColumn *column)
{
AtkObject *obj;
guint id;
obj = _gtk_widget_peek_accessible (GTK_WIDGET (treeview));
if (obj == NULL)
return;
id = get_column_number (treeview, column);
if (gtk_tree_view_column_get_visible (column))
_gtk_tree_view_accessible_do_add_column (GTK_TREE_VIEW_ACCESSIBLE (obj),
treeview,
column,
id);
else
_gtk_tree_view_accessible_do_remove_column (GTK_TREE_VIEW_ACCESSIBLE (obj),
treeview,
column,
id);
}

14
gtk/a11y/gtktreeviewaccessible.h
View File

@ -40,8 +40,6 @@ struct _GtkTreeViewAccessible
GtkContainerAccessible parent;
gint n_children_deleted;
gint n_cols;
GArray* col_data;
GHashTable *cell_infos;
GtkTreeModel *tree_model;
AtkObject *focus_cell;
@ -63,6 +61,18 @@ void _gtk_tree_view_accessible_remove (GtkTreeView *tree
GtkRBTree *tree,
GtkRBNode *node);
void _gtk_tree_view_accessible_add_column (GtkTreeView *treeview,
GtkTreeViewColumn *column,
guint id);
void _gtk_tree_view_accessible_remove_column (GtkTreeView *treeview,
GtkTreeViewColumn *column,
guint id);
void _gtk_tree_view_accessible_reorder_column(GtkTreeView *treeview,
GtkTreeViewColumn *column);
void _gtk_tree_view_accessible_toggle_visibility
(GtkTreeView *treeview,
GtkTreeViewColumn *column);
G_END_DECLS
#endif /* __GTK_TREE_VIEW_ACCESSIBLE_H__ */

15
gtk/gtktreeview.c
View File

@ -11922,6 +11922,8 @@ gint
gtk_tree_view_remove_column (GtkTreeView *tree_view,
GtkTreeViewColumn *column)
{
guint position;
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
@ -11946,6 +11948,8 @@ gtk_tree_view_remove_column (GtkTreeView *tree_view,
_gtk_tree_view_column_unset_tree_view (column);
position = g_list_index (tree_view->priv->columns, column);
tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
tree_view->priv->n_columns--;
@ -11972,6 +11976,8 @@ gtk_tree_view_remove_column (GtkTreeView *tree_view,
_gtk_tree_view_reset_header_styles (tree_view);
_gtk_tree_view_accessible_remove_column (tree_view, column, position);
g_object_unref (column);
g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
@ -12004,6 +12010,9 @@ gtk_tree_view_insert_column (GtkTreeView *tree_view,
g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
== GTK_TREE_VIEW_COLUMN_FIXED, -1);
if (position < 0 || position > tree_view->priv->n_columns)
position = tree_view->priv->n_columns;
g_object_ref_sink (column);
if (tree_view->priv->n_columns == 0 &&
@ -12038,6 +12047,9 @@ gtk_tree_view_insert_column (GtkTreeView *tree_view,
}
_gtk_tree_view_reset_header_styles (tree_view);
_gtk_tree_view_accessible_add_column (tree_view, column, position);
g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
return tree_view->priv->n_columns;
@ -12254,6 +12266,9 @@ gtk_tree_view_move_column_after (GtkTreeView *tree_view,
}
_gtk_tree_view_reset_header_styles (tree_view);
_gtk_tree_view_accessible_reorder_column (tree_view, column);
g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
}

7
gtk/gtktreeviewcolumn.c
View File

@ -37,6 +37,7 @@
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtktypebuiltins.h"
#include "a11y/gtktreeviewaccessible.h"
/**
@ -1937,7 +1938,11 @@ gtk_tree_view_column_set_visible (GtkTreeViewColumn *tree_column,
_gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
if (priv->tree_view)
_gtk_tree_view_reset_header_styles (GTK_TREE_VIEW (priv->tree_view));
{
_gtk_tree_view_reset_header_styles (GTK_TREE_VIEW (priv->tree_view));
_gtk_tree_view_accessible_toggle_visibility (GTK_TREE_VIEW (priv->tree_view),
tree_column);
}
gtk_tree_view_column_update_button (tree_column);
g_object_notify (G_OBJECT (tree_column), "visible");