/*
* This program 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.
*
* This program 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 General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
*
* Authors:
* Christopher James Lahey <clahey@ximian.com>
* Bolian Yin <bolian.yin@sun.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#include "evolution-config.h"
#include "gal-a11y-e-table-item.h"
#include <string.h>
#include <atk/atk.h>
#include "e-canvas.h"
#include "e-selection-model.h"
#include "e-table-click-to-add.h"
#include "e-table-subset.h"
#include "e-table.h"
#include "e-tree.h"
#include "gal-a11y-e-cell-registry.h"
#include "gal-a11y-e-cell.h"
#include "gal-a11y-e-table-click-to-add.h"
#include "gal-a11y-e-table-column-header.h"
#include "gal-a11y-e-table-item-factory.h"
#include "gal-a11y-util.h"
static GObjectClass *parent_class;
static AtkComponentIface *component_parent_iface;
static GType parent_type;
static gint priv_offset;
static GQuark quark_accessible_object = 0;
#define GET_PRIVATE(object) \
((GalA11yETableItemPrivate *) (((gchar *) object) + priv_offset))
#define PARENT_TYPE (parent_type)
struct _GalA11yETableItemPrivate {
ETableItem *item;
gint cols;
gint rows;
gulong selection_changed_id;
gulong selection_row_changed_id;
gulong cursor_changed_id;
ETableCol ** columns;
ESelectionModel *selection;
AtkStateSet *state_set;
GtkWidget *widget;
};
static gboolean gal_a11y_e_table_item_ref_selection (GalA11yETableItem *a11y,
ESelectionModel *selection);
static gboolean gal_a11y_e_table_item_unref_selection (GalA11yETableItem *a11y);
static AtkObject * eti_ref_at (AtkTable *table, gint row, gint column);
static void
free_columns (ETableCol **columns)
{
gint ii;
if (!columns)
return;
for (ii = 0; columns[ii]; ii++) {
g_object_unref (columns[ii]);
}
g_free (columns);
}
static void
table_item_cell_gone_cb (gpointer user_data,
GObject *gone_cell)
{
GalA11yETableItem *a11y;
GObject *old_cell;
a11y = GAL_A11Y_E_TABLE_ITEM (user_data);
old_cell = g_object_get_data (G_OBJECT (a11y), "gail-focus-object");
if (old_cell == gone_cell)
g_object_set_data (G_OBJECT (a11y), "gail-focus-object", NULL);
}
static void
item_finalized (gpointer user_data,
GObject *gone_item)
{
GalA11yETableItem *a11y;
GalA11yETableItemPrivate *priv;
GObject *old_cell;
a11y = GAL_A11Y_E_TABLE_ITEM (user_data);
priv = GET_PRIVATE (a11y);
priv->item = NULL;
old_cell = g_object_get_data (G_OBJECT (a11y), "gail-focus-object");
if (old_cell) {
g_object_weak_unref (G_OBJECT (old_cell), table_item_cell_gone_cb, a11y);
g_object_unref (old_cell);
}
g_object_set_data (G_OBJECT (a11y), "gail-focus-object", NULL);
if (atk_state_set_add_state (priv->state_set, ATK_STATE_DEFUNCT))
atk_object_notify_state_change (ATK_OBJECT (a11y), ATK_STATE_DEFUNCT, TRUE);
if (priv->selection)
gal_a11y_e_table_item_unref_selection (a11y);
g_object_unref (a11y);
}
static void
gal_a11y_e_table_item_state_change_cb (AtkObject *atkobject,
const gchar *state_name,
gboolean was_set,
gpointer user_data)
{
g_return_if_fail (GAL_A11Y_IS_E_TABLE_ITEM (atkobject));
if (atk_state_type_for_name (state_name) == ATK_STATE_DEFUNCT) {
GalA11yETableItemPrivate *priv;
priv = GET_PRIVATE (atkobject);
g_return_if_fail (priv != NULL);
if (was_set)
atk_state_set_add_state (priv->state_set, ATK_STATE_DEFUNCT);
else
atk_state_set_remove_state (priv->state_set, ATK_STATE_DEFUNCT);
}
}
static AtkStateSet *
eti_ref_state_set (AtkObject *accessible)
{
GalA11yETableItemPrivate *priv = GET_PRIVATE (accessible);
g_object_ref (priv->state_set);
return priv->state_set;
}
inline static gint
view_to_model_row (ETableItem *eti,
gint row)
{
if (eti->uses_source_model) {
ETableSubset *etss = E_TABLE_SUBSET (eti->table_model);
if (row >= 0 && row < etss->n_map) {
eti->row_guess = row;
return etss->map_table[row];
} else
return -1;
} else
return row;
}
inline static gint
view_to_model_col (ETableItem *eti,
gint view_col)
{
ETableCol *ecol = e_table_header_get_column (eti->header, view_col);
return (ecol != NULL) ? ecol->spec->model_col : -1;
}
inline static gint
model_to_view_row (ETableItem *eti,
gint row)
{
gint i;
if (row == -1)
return -1;
if (eti->uses_source_model) {
ETableSubset *etss = E_TABLE_SUBSET (eti->table_model);
if (eti->row_guess >= 0 && eti->row_guess < etss->n_map) {
if (etss->map_table[eti->row_guess] == row) {
return eti->row_guess;
}
}
for (i = 0; i < etss->n_map; i++) {
if (etss->map_table[i] == row)
return i;
}
return -1;
} else
return row;
}
inline static gint
model_to_view_col (ETableItem *eti,
gint model_col)
{
gint i;
if (model_col == -1)
return -1;
for (i = 0; i < eti->cols; i++) {
ETableCol *ecol = e_table_header_get_column (eti->header, i);
if (ecol->spec->model_col == model_col)
return i;
}
return -1;
}
inline static GObject *
eti_a11y_get_gobject (AtkObject *accessible)
{
return atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (accessible));
}
static void
eti_a11y_reset_focus_object (GalA11yETableItem *a11y,
ETableItem *item,
gboolean notify)
{
ESelectionModel * esm;
gint cursor_row, cursor_col, view_row, view_col;
AtkObject *cell, *old_cell;
esm = item->selection;
g_return_if_fail (esm);
cursor_row = e_selection_model_cursor_row (esm);
cursor_col = e_selection_model_cursor_col (esm);
view_row = model_to_view_row (item, cursor_row);
view_col = model_to_view_col (item, cursor_col);
if (view_row == -1)
view_row = 0;
if (view_col == -1)
view_col = 0;
old_cell = (AtkObject *) g_object_get_data (G_OBJECT (a11y), "gail-focus-object");
if (old_cell && GAL_A11Y_IS_E_CELL (old_cell))
gal_a11y_e_cell_remove_state (
GAL_A11Y_E_CELL (old_cell), ATK_STATE_FOCUSED, FALSE);
if (old_cell) {
g_object_weak_unref (G_OBJECT (old_cell), table_item_cell_gone_cb, a11y);
g_object_unref (old_cell);
}
cell = eti_ref_at (ATK_TABLE (a11y), view_row, view_col);
if (cell != NULL) {
g_object_set_data (G_OBJECT (a11y), "gail-focus-object", cell);
gal_a11y_e_cell_add_state (
GAL_A11Y_E_CELL (cell), ATK_STATE_FOCUSED, FALSE);
g_object_weak_ref (G_OBJECT (cell), table_item_cell_gone_cb, a11y);
} else
g_object_set_data (G_OBJECT (a11y), "gail-focus-object", NULL);
if (notify && cell)
g_signal_emit_by_name (a11y, "active-descendant-changed", cell);
}
static void
eti_dispose (GObject *object)
{
GalA11yETableItem *a11y = GAL_A11Y_E_TABLE_ITEM (object);
GalA11yETableItemPrivate *priv = GET_PRIVATE (a11y);
if (priv->columns) {
free_columns (priv->columns);
priv->columns = NULL;
}
if (priv->item) {
g_object_weak_unref (G_OBJECT (priv->item), item_finalized, a11y);
priv->item = NULL;
}
if (parent_class->dispose)
parent_class->dispose (object);
}
/* Static functions */
static gint
eti_get_n_children (AtkObject *accessible)
{
g_return_val_if_fail (GAL_A11Y_IS_E_TABLE_ITEM (accessible), 0);
if (!eti_a11y_get_gobject (accessible))
return 0;
return atk_table_get_n_columns (ATK_TABLE (accessible)) *
(atk_table_get_n_rows (ATK_TABLE (accessible)) + 1);
}
static AtkObject *
eti_ref_child (AtkObject *accessible,
gint index)
{
ETableItem *item;
gint col, row;
g_return_val_if_fail (GAL_A11Y_IS_E_TABLE_ITEM (accessible), NULL);
item = E_TABLE_ITEM (eti_a11y_get_gobject (accessible));
if (!item)
return NULL;
if (index < item->cols) {
ETableCol *ecol;
AtkObject *child;
ecol = e_table_header_get_column (item->header, index);
child = gal_a11y_e_table_column_header_new (ecol, item, accessible);
return child;
}
index -= item->cols;
col = index % item->cols;
row = index / item->cols;
return eti_ref_at (ATK_TABLE (accessible), row, col);
}
static void
eti_get_extents (AtkComponent *component,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coord_type)
{
ETableItem *item;
AtkObject *parent;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (component)));
if (!item)
return;
parent = ATK_OBJECT (component)->accessible_parent;
if (parent && ATK_IS_COMPONENT (parent))
atk_component_get_extents (
ATK_COMPONENT (parent),
x, y,
width, height,
coord_type);
if (parent && GAL_A11Y_IS_E_TABLE_CLICK_TO_ADD (parent)) {
ETableClickToAdd *etcta = E_TABLE_CLICK_TO_ADD (
atk_gobject_accessible_get_object (
ATK_GOBJECT_ACCESSIBLE (parent)));
if (etcta) {
*width = etcta->width;
*height = etcta->height;
}
}
}
static AtkObject *
eti_ref_accessible_at_point (AtkComponent *component,
gint x,
gint y,
AtkCoordType coord_type)
{
gint row = -1;
gint col = -1;
gint x_origin, y_origin;
ETableItem *item;
GtkWidget *tableOrTree;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (component)));
if (!item)
return NULL;
atk_component_get_extents (
component,
&x_origin,
&y_origin,
NULL,
NULL,
coord_type);
x -= x_origin;
y -= y_origin;
tableOrTree = gtk_widget_get_parent (GTK_WIDGET (item->parent.canvas));
if (E_IS_TREE (tableOrTree))
e_tree_get_cell_at (E_TREE (tableOrTree), x, y, &row, &col);
else
e_table_get_cell_at (E_TABLE (tableOrTree), x, y, &row, &col);
if (row != -1 && col != -1) {
return eti_ref_at (ATK_TABLE (component), row, col);
} else {
return NULL;
}
}
/* atk table */
static AtkObject *
eti_ref_at (AtkTable *table,
gint row,
gint column)
{
ETableItem *item;
AtkObject * ret;
GalA11yETableItemPrivate *priv = GET_PRIVATE (table);
if (atk_state_set_contains_state (priv->state_set, ATK_STATE_DEFUNCT))
return NULL;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (table)));
if (!item)
return NULL;
if (column >= 0 &&
column < item->cols &&
row >= 0 &&
row < item->rows &&
item->cell_views_realized) {
ECellView *cell_view = item->cell_views[column];
ETableCol *ecol = e_table_header_get_column (item->header, column);
ret = gal_a11y_e_cell_registry_get_object (
NULL,
item,
cell_view,
ATK_OBJECT (table),
ecol->spec->model_col,
column,
row);
if (ATK_IS_OBJECT (ret)) {
/* if current cell is focused, add FOCUSED state */
if (e_selection_model_cursor_row (item->selection) ==
GAL_A11Y_E_CELL (ret)->row &&
e_selection_model_cursor_col (item->selection) ==
GAL_A11Y_E_CELL (ret)->model_col)
gal_a11y_e_cell_add_state (
GAL_A11Y_E_CELL (ret),
ATK_STATE_FOCUSED, FALSE);
} else
ret = NULL;
return ret;
}
return NULL;
}
static gint
eti_get_index_at (AtkTable *table,
gint row,
gint column)
{
ETableItem *item;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (table)));
if (!item)
return -1;
return column + (row + 1) * item->cols;
}
static gint
eti_get_column_at_index (AtkTable *table,
gint index)
{
ETableItem *item;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (table)));
if (!item)
return -1;
return index % item->cols;
}
static gint
eti_get_row_at_index (AtkTable *table,
gint index)
{
ETableItem *item;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (table)));
if (!item)
return -1;
return index / item->cols - 1;
}
static gint
eti_get_n_columns (AtkTable *table)
{
ETableItem *item;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (table)));
if (!item)
return -1;
return item->cols;
}
static gint
eti_get_n_rows (AtkTable *table)
{
ETableItem *item;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (table)));
if (!item)
return -1;
return item->rows;
}
static gint
eti_get_column_extent_at (AtkTable *table,
gint row,
gint column)
{
ETableItem *item;
gint width;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (table)));
if (!item)
return -1;
e_table_item_get_cell_geometry (
item,
&row,
&column,
NULL,
NULL,
&width,
NULL);
return width;
}
static gint
eti_get_row_extent_at (AtkTable *table,
gint row,
gint column)
{
ETableItem *item;
gint height;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (table)));
if (!item)
return -1;
e_table_item_get_cell_geometry (
item,
&row,
&column,
NULL,
NULL,
NULL,
&height);
return height;
}
static AtkObject *
eti_get_caption (AtkTable *table)
{
/* Unimplemented */
return NULL;
}
static const gchar *
eti_get_column_description (AtkTable *table,
gint column)
{
ETableItem *item;
ETableCol *ecol;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (table)));
if (!item)
return NULL;
ecol = e_table_header_get_column (item->header, column);
return ecol->text;
}
static AtkObject *
eti_get_column_header (AtkTable *table,
gint column)
{
ETableItem *item;
ETableCol *ecol;
AtkObject *atk_obj = NULL;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (table)));
if (!item)
return NULL;
ecol = e_table_header_get_column (item->header, column);
if (ecol) {
atk_obj = gal_a11y_e_table_column_header_new (ecol, item, ATK_OBJECT (table));
}
return atk_obj;
}
static const gchar *
eti_get_row_description (AtkTable *table,
gint row)
{
/* Unimplemented */
return NULL;
}
static AtkObject *
eti_get_row_header (AtkTable *table,
gint row)
{
/* Unimplemented */
return NULL;
}
static AtkObject *
eti_get_summary (AtkTable *table)
{
/* Unimplemented */
return NULL;
}
static gboolean
table_is_row_selected (AtkTable *table,
gint row)
{
ETableItem *item;
GalA11yETableItemPrivate *priv = GET_PRIVATE (table);
if (row < 0)
return FALSE;
if (atk_state_set_contains_state (priv->state_set, ATK_STATE_DEFUNCT))
return FALSE;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (table)));
if (!item)
return FALSE;
return e_selection_model_is_row_selected (
item->selection, view_to_model_row (item, row));
}
static gboolean
table_is_selected (AtkTable *table,
gint row,
gint column)
{
return table_is_row_selected (table, row);
}
static gint
table_get_selected_rows (AtkTable *table,
gint **rows_selected)
{
ETableItem *item;
gint n_selected, row, index_selected;
GalA11yETableItemPrivate *priv = GET_PRIVATE (table);
if (atk_state_set_contains_state (priv->state_set, ATK_STATE_DEFUNCT))
return 0;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (table)));
if (!item)
return 0;
n_selected = e_selection_model_selected_count (item->selection);
if (rows_selected) {
*rows_selected = (gint *) g_malloc (n_selected * sizeof (gint));
index_selected = 0;
for (row = 0; row < item->rows && index_selected < n_selected; ++row) {
if (atk_table_is_row_selected (table, row)) {
(*rows_selected)[index_selected] = row;
++index_selected;
}
}
}
return n_selected;
}
static gboolean
table_add_row_selection (AtkTable *table,
gint row)
{
ETableItem *item;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (table)));
if (!item)
return FALSE;
if (table_is_row_selected (table, row))
return TRUE;
e_selection_model_toggle_single_row (
item->selection,
view_to_model_row (item, row));
return TRUE;
}
static gboolean
table_remove_row_selection (AtkTable *table,
gint row)
{
ETableItem *item;
GalA11yETableItemPrivate *priv = GET_PRIVATE (table);
if (atk_state_set_contains_state (priv->state_set, ATK_STATE_DEFUNCT))
return FALSE;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (table)));
if (!item)
return FALSE;
if (!atk_table_is_row_selected (table, row))
return TRUE;
e_selection_model_toggle_single_row (
item->selection, view_to_model_row (item, row));
return TRUE;
}
static void
eti_atk_table_iface_init (AtkTableIface *iface)
{
iface->ref_at = eti_ref_at;
iface->get_index_at = eti_get_index_at;
iface->get_column_at_index = eti_get_column_at_index;
iface->get_row_at_index = eti_get_row_at_index;
iface->get_n_columns = eti_get_n_columns;
iface->get_n_rows = eti_get_n_rows;
iface->get_column_extent_at = eti_get_column_extent_at;
iface->get_row_extent_at = eti_get_row_extent_at;
iface->get_caption = eti_get_caption;
iface->get_column_description = eti_get_column_description;
iface->get_column_header = eti_get_column_header;
iface->get_row_description = eti_get_row_description;
iface->get_row_header = eti_get_row_header;
iface->get_summary = eti_get_summary;
iface->is_row_selected = table_is_row_selected;
iface->is_selected = table_is_selected;
iface->get_selected_rows = table_get_selected_rows;
iface->add_row_selection = table_add_row_selection;
iface->remove_row_selection = table_remove_row_selection;
}
static void
eti_atk_component_iface_init (AtkComponentIface *iface)
{
component_parent_iface = g_type_interface_peek_parent (iface);
iface->ref_accessible_at_point = eti_ref_accessible_at_point;
iface->get_extents = eti_get_extents;
}
static void
eti_rows_inserted (ETableModel *model,
gint row,
gint count,
AtkObject *table_item)
{
gint n_cols,n_rows,i,j;
GalA11yETableItem * item_a11y;
gint old_nrows;
g_return_if_fail (table_item);
item_a11y = GAL_A11Y_E_TABLE_ITEM (table_item);
n_cols = atk_table_get_n_columns (ATK_TABLE (table_item));
n_rows = atk_table_get_n_rows (ATK_TABLE (table_item));
old_nrows = GET_PRIVATE (item_a11y)->rows;
g_return_if_fail (n_cols > 0 && n_rows > 0);
g_return_if_fail (old_nrows == n_rows - count);
GET_PRIVATE (table_item)->rows = n_rows;
g_signal_emit_by_name (
table_item, "row-inserted", row,
count, NULL);
for (i = row; i < (row + count); i++) {
for (j = 0; j < n_cols; j++) {
g_signal_emit_by_name (
table_item,
"children_changed::add",
(((i + 1) * n_cols) + j), NULL, NULL);
}
}
g_signal_emit_by_name (table_item, "visible-data-changed");
}
static void
eti_rows_deleted (ETableModel *model,
gint row,
gint count,
AtkObject *table_item)
{
gint i,j, n_rows, n_cols, old_nrows;
ETableItem *item = E_TABLE_ITEM (
atk_gobject_accessible_get_object (
ATK_GOBJECT_ACCESSIBLE (table_item)));
n_rows = atk_table_get_n_rows (ATK_TABLE (table_item));
n_cols = atk_table_get_n_columns (ATK_TABLE (table_item));
old_nrows = GET_PRIVATE (table_item)->rows;
g_return_if_fail (row + count <= old_nrows);
g_return_if_fail (old_nrows == n_rows + count);
GET_PRIVATE (table_item)->rows = n_rows;
g_signal_emit_by_name (
table_item, "row-deleted", row,
count, NULL);
for (i = row; i < (row + count); i++) {
for (j = 0; j < n_cols; j++) {
g_signal_emit_by_name (
table_item,
"children_changed::remove",
(((i + 1) * n_cols) + j), NULL, NULL);
}
}
g_signal_emit_by_name (table_item, "visible-data-changed");
eti_a11y_reset_focus_object ((GalA11yETableItem *) table_item, item, TRUE);
}
static void
eti_model_changed (ETableModel *model,
AtkObject *table_item)
{
GalA11yETableItemPrivate *priv;
gint row_count;
g_return_if_fail (GAL_A11Y_IS_E_TABLE_ITEM (table_item));
priv = GET_PRIVATE (table_item);
row_count = e_table_model_row_count (model);
if (priv->rows != row_count) {
priv->rows = row_count;
g_signal_emit_by_name (table_item, "visible-data-changed");
}
}
static void
eti_tree_model_node_changed_cb (ETreeModel *model,
ETreePath node,
ETableItem *eti)
{
AtkObject *atk_obj;
GalA11yETableItem *a11y;
g_return_if_fail (E_IS_TABLE_ITEM (eti));
atk_obj = atk_gobject_accessible_for_object (G_OBJECT (eti));
a11y = GAL_A11Y_E_TABLE_ITEM (atk_obj);
/* we can't figure out which rows are changed, so just send out a signal ... */
if (GET_PRIVATE (a11y)->rows > 0)
g_signal_emit_by_name (a11y, "visible-data-changed");
}
enum {
ETI_HEADER_UNCHANGED = 0,
ETI_HEADER_REORDERED,
ETI_HEADER_NEW_ADDED,
ETI_HEADER_REMOVED
};
/*
* 1. Check what actually happened: column reorder, remove or add
* 2. Update cache
* 3. Emit signals
*/
static void
eti_header_structure_changed (ETableHeader *eth,
AtkObject *a11y)
{
gboolean reorder_found = FALSE, added_found = FALSE, removed_found = FALSE;
GalA11yETableItem * a11y_item;
ETableCol ** cols, **prev_cols;
GalA11yETableItemPrivate *priv;
gint *state = NULL, *prev_state = NULL, *reorder = NULL;
gint i,j,n_rows,n_cols, prev_n_cols;
a11y_item = GAL_A11Y_E_TABLE_ITEM (a11y);
priv = GET_PRIVATE (a11y_item);
/* Assume rows do not changed. */
n_rows = priv->rows;
prev_n_cols = priv->cols;
prev_cols = priv->columns;
cols = e_table_header_get_columns (eth);
n_cols = eth->col_count;
g_return_if_fail (cols && prev_cols && n_cols > 0);
/* Init to ETI_HEADER_UNCHANGED. */
state = g_malloc0 (sizeof (gint) * (MAX (prev_n_cols, n_cols) + 1));
prev_state = g_malloc0 (sizeof (gint) * (MAX (prev_n_cols, n_cols) + 1));
reorder = g_malloc0 (sizeof (gint) * (MAX (prev_n_cols, n_cols) + 1));
/* Compare with previously saved column headers. */
for (i = 0; i < n_cols && cols[i]; i++) {
for (j = 0; j < prev_n_cols && prev_cols[j]; j++) {
if (prev_cols[j] == cols[i] && i != j) {
reorder_found = TRUE;
state[i] = ETI_HEADER_REORDERED;
reorder[i] = j;
break;
} else if (prev_cols[j] == cols[i]) {
/* OK, this column is not changed. */
break;
}
}
/* cols[i] is new added column. */
if (j == prev_n_cols) {
added_found = TRUE;
state[i] = ETI_HEADER_NEW_ADDED;
}
}
/* Now try to find if there are removed columns. */
for (i = 0; i < prev_n_cols && prev_cols[i]; i++) {
for (j = 0; j < n_cols && cols[j]; j++)
if (prev_cols[j] == cols[i])
break;
/* Removed columns found. */
if (j == n_cols) {
removed_found = TRUE;
prev_state[j] = ETI_HEADER_REMOVED;
}
}
/* If nothing interesting just return. */
if (!reorder_found && !added_found && !removed_found) {
g_free (state);
g_free (reorder);
g_free (prev_state);
return;
}
/* Emit signals */
if (reorder_found)
g_signal_emit_by_name (a11y_item, "column_reordered");
if (removed_found) {
for (i = 0; i < prev_n_cols; i++) {
if (prev_state[i] == ETI_HEADER_REMOVED) {
g_signal_emit_by_name (
a11y_item, "column-deleted", i, 1);
for (j = 0; j < n_rows; j++)
g_signal_emit_by_name (
a11y_item,
"children_changed::remove",
((j + 1) * prev_n_cols + i),
NULL, NULL);
}
}
}
if (added_found) {
for (i = 0; i < n_cols; i++) {
if (state[i] == ETI_HEADER_NEW_ADDED) {
g_signal_emit_by_name (
a11y_item, "column-inserted", i, 1);
for (j = 0; j < n_rows; j++)
g_signal_emit_by_name (
a11y_item,
"children_changed::add",
((j + 1) * n_cols + i),
NULL, NULL);
}
}
}
priv->cols = n_cols;
g_free (state);
g_free (reorder);
g_free (prev_state);
free_columns (priv->columns);
priv->columns = cols;
}
static void
eti_real_initialize (AtkObject *obj,
gpointer data)
{
ETableItem * eti;
ETableModel * model;
ATK_OBJECT_CLASS (parent_class)->initialize (obj, data);
eti = E_TABLE_ITEM (data);
model = eti->table_model;
g_signal_connect_object (
model, "model-rows-inserted",
G_CALLBACK (eti_rows_inserted), obj, 0);
g_signal_connect_object (
model, "model-rows-deleted",
G_CALLBACK (eti_rows_deleted), obj, 0);
g_signal_connect_object (
model, "model-changed",
G_CALLBACK (eti_model_changed), obj, 0);
g_signal_connect_object (
eti->header, "structure_change",
G_CALLBACK (eti_header_structure_changed), obj, 0);
}
static void
eti_class_init (GalA11yETableItemClass *class)
{
AtkObjectClass *atk_object_class = ATK_OBJECT_CLASS (class);
GObjectClass *object_class = G_OBJECT_CLASS (class);
quark_accessible_object =
g_quark_from_static_string ("gtk-accessible-object");
parent_class = g_type_class_ref (PARENT_TYPE);
object_class->dispose = eti_dispose;
atk_object_class->get_n_children = eti_get_n_children;
atk_object_class->ref_child = eti_ref_child;
atk_object_class->initialize = eti_real_initialize;
atk_object_class->ref_state_set = eti_ref_state_set;
}
static void
eti_init (GalA11yETableItem *a11y)
{
GalA11yETableItemPrivate *priv;
priv = GET_PRIVATE (a11y);
priv->selection_changed_id = 0;
priv->selection_row_changed_id = 0;
priv->cursor_changed_id = 0;
priv->selection = NULL;
}
/* atk selection */
static void atk_selection_interface_init (AtkSelectionIface *iface);
static gboolean selection_add_selection (AtkSelection *selection,
gint i);
static gboolean selection_clear_selection (AtkSelection *selection);
static AtkObject *
selection_ref_selection (AtkSelection *selection,
gint i);
static gint selection_get_selection_count (AtkSelection *selection);
static gboolean selection_is_child_selected (AtkSelection *selection,
gint i);
/* callbacks */
static void eti_a11y_selection_model_removed_cb (ETableItem *eti,
ESelectionModel *selection,
gpointer data);
static void eti_a11y_selection_model_added_cb (ETableItem *eti,
ESelectionModel *selection,
gpointer data);
static void eti_a11y_selection_changed_cb (ESelectionModel *selection,
GalA11yETableItem *a11y);
static void eti_a11y_selection_row_changed_cb (ESelectionModel *selection,
gint row,
GalA11yETableItem *a11y);
static void eti_a11y_cursor_changed_cb (ESelectionModel *selection,
gint row, gint col,
GalA11yETableItem *a11y);
/**
* gal_a11y_e_table_item_get_type:
* @void:
*
* Registers the &GalA11yETableItem class if necessary, and returns the type ID
* associated to it.
*
* Return value: The type ID of the &GalA11yETableItem class.
**/
GType
gal_a11y_e_table_item_get_type (void)
{
static GType type = 0;
if (!type) {
AtkObjectFactory *factory;
GTypeInfo info = {
sizeof (GalA11yETableItemClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) eti_class_init,
(GClassFinalizeFunc) NULL,
NULL, /* class_data */
sizeof (GalA11yETableItem),
0,
(GInstanceInitFunc) eti_init,
NULL /* value_table_item */
};
static const GInterfaceInfo atk_component_info = {
(GInterfaceInitFunc) eti_atk_component_iface_init,
(GInterfaceFinalizeFunc) NULL,
NULL
};
static const GInterfaceInfo atk_table_info = {
(GInterfaceInitFunc) eti_atk_table_iface_init,
(GInterfaceFinalizeFunc) NULL,
NULL
};
static const GInterfaceInfo atk_selection_info = {
(GInterfaceInitFunc) atk_selection_interface_init,
(GInterfaceFinalizeFunc) NULL,
NULL
};
factory = atk_registry_get_factory (
atk_get_default_registry (), GNOME_TYPE_CANVAS_ITEM);
parent_type = atk_object_factory_get_accessible_type (factory);
type = gal_a11y_type_register_static_with_private (
PARENT_TYPE, "GalA11yETableItem", &info, 0,
sizeof (GalA11yETableItemPrivate), &priv_offset);
g_type_add_interface_static (type, ATK_TYPE_COMPONENT, &atk_component_info);
g_type_add_interface_static (type, ATK_TYPE_TABLE, &atk_table_info);
g_type_add_interface_static (type, ATK_TYPE_SELECTION, &atk_selection_info);
}
return type;
}
AtkObject *
gal_a11y_e_table_item_new (ETableItem *item)
{
GalA11yETableItem *a11y;
AtkObject *accessible;
ESelectionModel * esm;
AtkObject *parent;
const gchar *name;
g_return_val_if_fail (item && item->cols >= 0, NULL);
a11y = g_object_new (gal_a11y_e_table_item_get_type (), NULL);
atk_object_initialize (ATK_OBJECT (a11y), item);
GET_PRIVATE (a11y)->state_set = atk_state_set_new ();
atk_state_set_add_state (GET_PRIVATE (a11y)->state_set, ATK_STATE_MANAGES_DESCENDANTS);
atk_state_set_add_state (GET_PRIVATE (a11y)->state_set, ATK_STATE_ENABLED);
atk_state_set_add_state (GET_PRIVATE (a11y)->state_set, ATK_STATE_SENSITIVE);
atk_state_set_add_state (GET_PRIVATE (a11y)->state_set, ATK_STATE_SHOWING);
atk_state_set_add_state (GET_PRIVATE (a11y)->state_set, ATK_STATE_VISIBLE);
g_signal_connect (a11y, "state-change", G_CALLBACK (gal_a11y_e_table_item_state_change_cb), NULL);
accessible = ATK_OBJECT (a11y);
GET_PRIVATE (a11y)->item = item;
/* Initialize cell data. */
GET_PRIVATE (a11y)->cols = item->cols;
GET_PRIVATE (a11y)->rows = item->rows >= 0 ? item->rows : 0;
GET_PRIVATE (a11y)->columns = e_table_header_get_columns (item->header);
if (GET_PRIVATE (a11y)->columns == NULL)
return NULL;
g_signal_connect (
item, "selection_model_removed",
G_CALLBACK (eti_a11y_selection_model_removed_cb), NULL);
g_signal_connect (
item, "selection_model_added",
G_CALLBACK (eti_a11y_selection_model_added_cb), NULL);
if (item->selection)
gal_a11y_e_table_item_ref_selection (
a11y,
item->selection);
/* find the TableItem's parent: table or tree */
GET_PRIVATE (a11y)->widget = gtk_widget_get_parent (
GTK_WIDGET (item->parent.canvas));
parent = gtk_widget_get_accessible (GET_PRIVATE (a11y)->widget);
name = atk_object_get_name (parent);
if (name)
atk_object_set_name (accessible, name);
atk_object_set_parent (accessible, parent);
if (E_IS_TREE (GET_PRIVATE (a11y)->widget)) {
ETreeModel *model;
model = e_tree_get_model (E_TREE (GET_PRIVATE (a11y)->widget));
g_signal_connect (
model, "node_changed",
G_CALLBACK (eti_tree_model_node_changed_cb), item);
accessible->role = ATK_ROLE_TREE_TABLE;
} else if (E_IS_TABLE (GET_PRIVATE (a11y)->widget)) {
accessible->role = ATK_ROLE_TABLE;
}
g_object_weak_ref (G_OBJECT (item), item_finalized, g_object_ref (a11y));
esm = item->selection;
if (esm != NULL) {
eti_a11y_reset_focus_object (a11y, item, FALSE);
}
return ATK_OBJECT (a11y);
}
static gboolean
gal_a11y_e_table_item_ref_selection (GalA11yETableItem *a11y,
ESelectionModel *selection)
{
GalA11yETableItemPrivate *priv;
g_return_val_if_fail (a11y && selection, FALSE);
priv = GET_PRIVATE (a11y);
priv->selection_changed_id = g_signal_connect (
selection, "selection-changed",
G_CALLBACK (eti_a11y_selection_changed_cb), a11y);
priv->selection_row_changed_id = g_signal_connect (
selection, "selection-row-changed",
G_CALLBACK (eti_a11y_selection_row_changed_cb), a11y);
priv->cursor_changed_id = g_signal_connect (
selection, "cursor-changed",
G_CALLBACK (eti_a11y_cursor_changed_cb), a11y);
priv->selection = selection;
g_object_ref (selection);
return TRUE;
}
static gboolean
gal_a11y_e_table_item_unref_selection (GalA11yETableItem *a11y)
{
GalA11yETableItemPrivate *priv;
g_return_val_if_fail (a11y, FALSE);
priv = GET_PRIVATE (a11y);
g_return_val_if_fail (priv->selection_changed_id != 0, FALSE);
g_return_val_if_fail (priv->selection_row_changed_id != 0, FALSE);
g_return_val_if_fail (priv->cursor_changed_id != 0, FALSE);
g_signal_handler_disconnect (
priv->selection,
priv->selection_changed_id);
g_signal_handler_disconnect (
priv->selection,
priv->selection_row_changed_id);
g_signal_handler_disconnect (
priv->selection,
priv->cursor_changed_id);
priv->cursor_changed_id = 0;
priv->selection_row_changed_id = 0;
priv->selection_changed_id = 0;
g_object_unref (priv->selection);
priv->selection = NULL;
return TRUE;
}
/* callbacks */
static void
eti_a11y_selection_model_removed_cb (ETableItem *eti,
ESelectionModel *selection,
gpointer data)
{
AtkObject *atk_obj;
GalA11yETableItem *a11y;
g_return_if_fail (E_IS_TABLE_ITEM (eti));
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
atk_obj = atk_gobject_accessible_for_object (G_OBJECT (eti));
a11y = GAL_A11Y_E_TABLE_ITEM (atk_obj);
if (selection == GET_PRIVATE (a11y)->selection)
gal_a11y_e_table_item_unref_selection (a11y);
}
static void
eti_a11y_selection_model_added_cb (ETableItem *eti,
ESelectionModel *selection,
gpointer data)
{
AtkObject *atk_obj;
GalA11yETableItem *a11y;
g_return_if_fail (E_IS_TABLE_ITEM (eti));
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
atk_obj = atk_gobject_accessible_for_object (G_OBJECT (eti));
a11y = GAL_A11Y_E_TABLE_ITEM (atk_obj);
if (GET_PRIVATE (a11y)->selection)
gal_a11y_e_table_item_unref_selection (a11y);
gal_a11y_e_table_item_ref_selection (a11y, selection);
}
static void
eti_a11y_selection_changed_cb (ESelectionModel *selection,
GalA11yETableItem *a11y)
{
GalA11yETableItemPrivate *priv = GET_PRIVATE (a11y);
if (atk_state_set_contains_state (priv->state_set, ATK_STATE_DEFUNCT))
return;
g_return_if_fail (GAL_A11Y_IS_E_TABLE_ITEM (a11y));
g_signal_emit_by_name (a11y, "selection_changed");
}
static void
eti_a11y_selection_row_changed_cb (ESelectionModel *selection,
gint row,
GalA11yETableItem *a11y)
{
eti_a11y_selection_changed_cb (selection, a11y);
}
static void
eti_a11y_cursor_changed_cb (ESelectionModel *selection,
gint row,
gint col,
GalA11yETableItem *a11y)
{
ETableItem *item;
GalA11yETableItemPrivate *priv = GET_PRIVATE (a11y);
g_return_if_fail (GAL_A11Y_IS_E_TABLE_ITEM (a11y));
if (atk_state_set_contains_state (priv->state_set, ATK_STATE_DEFUNCT))
return;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (a11y)));
g_return_if_fail (item);
if (row == -1 && col == -1)
return;
eti_a11y_reset_focus_object (a11y, item, TRUE);
}
/* atk selection */
static void atk_selection_interface_init (AtkSelectionIface *iface)
{
g_return_if_fail (iface != NULL);
iface->add_selection = selection_add_selection;
iface->clear_selection = selection_clear_selection;
iface->ref_selection = selection_ref_selection;
iface->get_selection_count = selection_get_selection_count;
iface->is_child_selected = selection_is_child_selected;
}
static gboolean
selection_add_selection (AtkSelection *selection,
gint index)
{
AtkTable *table;
gint row, col, cursor_row, cursor_col, model_row, model_col;
ETableItem *item;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (selection)));
if (!item)
return FALSE;
table = ATK_TABLE (selection);
row = atk_table_get_row_at_index (table, index);
col = atk_table_get_column_at_index (table, index);
model_row = view_to_model_row (item, row);
model_col = view_to_model_col (item, col);
cursor_row = e_selection_model_cursor_row (item->selection);
cursor_col = e_selection_model_cursor_col (item->selection);
/* check whether is selected already */
if (model_row == cursor_row && model_col == cursor_col)
return TRUE;
if (model_row != cursor_row) {
/* we need to make the item get focus */
e_canvas_item_grab_focus (GNOME_CANVAS_ITEM (item), TRUE);
/* FIXME, currently we only support single row selection */
atk_selection_clear_selection (selection);
atk_table_add_row_selection (table, row);
}
e_selection_model_change_cursor (
item->selection,
model_row,
model_col);
e_selection_model_cursor_changed (
item->selection,
model_row,
model_col);
e_selection_model_cursor_activated (
item->selection,
model_row,
model_col);
return TRUE;
}
static gboolean
selection_clear_selection (AtkSelection *selection)
{
ETableItem *item;
item = E_TABLE_ITEM (eti_a11y_get_gobject (ATK_OBJECT (selection)));
if (!item)
return FALSE;
e_selection_model_clear (item->selection);
return TRUE;
}
static AtkObject *
selection_ref_selection (AtkSelection *selection,
gint index)
{
AtkTable *table;
gint row, col;
table = ATK_TABLE (selection);
row = atk_table_get_row_at_index (table, index);
col = atk_table_get_column_at_index (table, index);
if (!atk_table_is_row_selected (table, row))
return NULL;
return eti_ref_at (table, row, col);
}
static gint
selection_get_selection_count (AtkSelection *selection)
{
AtkTable *table;
gint n_selected;
table = ATK_TABLE (selection);
n_selected = atk_table_get_selected_rows (table, NULL);
if (n_selected > 0)
n_selected *= atk_table_get_n_columns (table);
return n_selected;
}
static gboolean
selection_is_child_selected (AtkSelection *selection,
gint i)
{
gint row;
row = atk_table_get_row_at_index (ATK_TABLE (selection), i);
return atk_table_is_row_selected (ATK_TABLE (selection), row);
}
void
gal_a11y_e_table_item_init (void)
{
if (atk_get_root ())
atk_registry_set_factory_type (
atk_get_default_registry (),
E_TYPE_TABLE_ITEM,
gal_a11y_e_table_item_factory_get_type ());
}