aboutsummaryrefslogtreecommitdiffstats
path: root/widgets/table/gal-a11y-e-table.c
blob: d04bda280eff539ce458f7aad03c0b41103d0c52 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
/*
 * 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; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Christopher James Lahey <clahey@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#include <config.h>

#include "a11y/gal-a11y-util.h"
#include "table/e-table.h"
#include "table/e-table-click-to-add.h"
#include "table/e-table-group.h"
#include "table/e-table-group-container.h"
#include "table/e-table-group-leaf.h"

#include "gal-a11y-e-table.h"
#include "gal-a11y-e-table-factory.h"
#include "gal-a11y-e-table-item.h"

#define CS_CLASS(a11y) (G_TYPE_INSTANCE_GET_CLASS ((a11y), C_TYPE_STREAM, GalA11yETableClass))
static AtkObjectClass *parent_class;
static GType parent_type;
static gint priv_offset;
#define GET_PRIVATE(object) ((GalA11yETablePrivate *) (((gchar *) object) + priv_offset))
#define PARENT_TYPE (parent_type)

struct _GalA11yETablePrivate {
    AtkObject *child_item;
};

/* Static functions */
static ETableItem *
find_first_table_item (ETableGroup *group)
{
    GnomeCanvasGroup *cgroup;
    GList *l;

    cgroup = GNOME_CANVAS_GROUP (group);

    for (l = cgroup->item_list; l; l = l->next) {
        GnomeCanvasItem *i;

        i = GNOME_CANVAS_ITEM (l->data);

        if (E_IS_TABLE_GROUP (i))
            return find_first_table_item (E_TABLE_GROUP (i));
        else if (E_IS_TABLE_ITEM (i)) {
            return E_TABLE_ITEM (i);
        }
    }

    return NULL;
}

static AtkObject*
eti_get_accessible (ETableItem *eti, AtkObject *parent)
{
    AtkObject *a11y = NULL;

    g_return_val_if_fail (eti, NULL);

    a11y = atk_gobject_accessible_for_object (G_OBJECT (eti));
    g_return_val_if_fail (a11y, NULL);

    return a11y;
}

static gboolean
init_child_item (GalA11yETable *a11y)
{
    ETable *table;

    if (!a11y || !GTK_IS_ACCESSIBLE (a11y))
        return FALSE;

    table = E_TABLE (gtk_accessible_get_widget (GTK_ACCESSIBLE (a11y)));
    if (table && gtk_widget_get_mapped (GTK_WIDGET (table)) && table->group && E_IS_TABLE_GROUP_CONTAINER (table->group)) {
        ETableGroupContainer *etgc =  (ETableGroupContainer *) table->group;
        GList *list;

        for (list = etgc->children; list; list = g_list_next (list)) {
            ETableGroupContainerChildNode *child_node = list->data;
            ETableGroup *child = child_node->child;
            ETableItem *eti = find_first_table_item (child);

            eti_get_accessible (eti, ATK_OBJECT (a11y));
        }
    }
    g_object_unref (a11y);
    g_object_unref (table);

    return FALSE;
}

static AtkObject*
et_ref_accessible_at_point  (AtkComponent *component,
                 gint x,
                 gint y,
                 AtkCoordType coord_type)
{
    GalA11yETable *a11y = GAL_A11Y_E_TABLE (component);
    if (GET_PRIVATE (a11y)->child_item)
        g_object_ref (GET_PRIVATE (a11y)->child_item);
    return GET_PRIVATE (a11y)->child_item;
}

static gint
et_get_n_children (AtkObject *accessible)
{
    GalA11yETable *a11y = GAL_A11Y_E_TABLE (accessible);
    ETable * et;
    gint n = 0;

    et = E_TABLE (gtk_accessible_get_widget (GTK_ACCESSIBLE (a11y)));

    if (et->group) {
        if (E_IS_TABLE_GROUP_LEAF (et->group))
            n = 1;
        else if (E_IS_TABLE_GROUP_CONTAINER (et->group)) {
            ETableGroupContainer *etgc = (ETableGroupContainer *) et->group;
            n = g_list_length (etgc->children);
        }
    }

    if (et && et->use_click_to_add && et->click_to_add) {
        n++;
    }
    return n;
}

static AtkObject*
et_ref_child (AtkObject *accessible,
          gint i)
{
    GalA11yETable *a11y = GAL_A11Y_E_TABLE (accessible);
    ETable * et;
    gint child_no;

    et = E_TABLE (gtk_accessible_get_widget (GTK_ACCESSIBLE (a11y)));

    child_no = et_get_n_children (accessible);
    if (i == 0 || i < child_no - 1) {
        if (E_IS_TABLE_GROUP_LEAF (et->group)) {
            ETableItem *eti = find_first_table_item (et->group);
            AtkObject *aeti = eti_get_accessible (eti, accessible);
            if (aeti)
                g_object_ref (aeti);
            return aeti;

        } else if (E_IS_TABLE_GROUP_CONTAINER (et->group)) {
            ETableGroupContainer *etgc =  (ETableGroupContainer *) et->group;
            ETableGroupContainerChildNode *child_node = g_list_nth_data (etgc->children, i);
            if (child_node) {
                ETableGroup *child = child_node->child;
                ETableItem * eti = find_first_table_item (child);
                AtkObject *aeti =  eti_get_accessible (eti, accessible);
                if (aeti)
                    g_object_ref (aeti);
                return aeti;
            }
        }
    } else if (i == child_no -1) {
        ETableClickToAdd * etcta;

        if (et && et->use_click_to_add && et->click_to_add) {
            etcta = E_TABLE_CLICK_TO_ADD (et->click_to_add);
            accessible = atk_gobject_accessible_for_object (G_OBJECT (etcta));
            if (accessible)
                g_object_ref (accessible);
            return accessible;
        }
    }

    return NULL;
}

static AtkLayer
et_get_layer (AtkComponent *component)
{
    return ATK_LAYER_WIDGET;
}

static void
et_class_init (GalA11yETableClass *class)
{
    AtkObjectClass *atk_object_class = ATK_OBJECT_CLASS (class);

    parent_class                              = g_type_class_ref (PARENT_TYPE);

    atk_object_class->get_n_children          = et_get_n_children;
    atk_object_class->ref_child               = et_ref_child;
}

static void
et_atk_component_iface_init (AtkComponentIface *iface)
{
    iface->ref_accessible_at_point = et_ref_accessible_at_point;
    iface->get_layer = et_get_layer;
}

static void
et_init (GalA11yETable *a11y)
{
    GalA11yETablePrivate *priv;

    priv = GET_PRIVATE (a11y);

    priv->child_item = NULL;
}

/**
 * gal_a11y_e_table_get_type:
 * @void:
 *
 * Registers the &GalA11yETable class if necessary, and returns the type ID
 * associated to it.
 *
 * Return value: The type ID of the &GalA11yETable class.
 **/
GType
gal_a11y_e_table_get_type (void)
{
    static GType type = 0;

    if (!type) {
        AtkObjectFactory *factory;

        GTypeInfo info = {
            sizeof (GalA11yETableClass),
            (GBaseInitFunc) NULL,
            (GBaseFinalizeFunc) NULL,
            (GClassInitFunc) et_class_init,
            (GClassFinalizeFunc) NULL,
            NULL, /* class_data */
            sizeof (GalA11yETable),
            0,
            (GInstanceInitFunc) et_init,
            NULL /* value_table */
        };

        static const GInterfaceInfo atk_component_info = {
            (GInterfaceInitFunc) et_atk_component_iface_init,
            (GInterfaceFinalizeFunc) NULL,
            NULL
        };

        factory = atk_registry_get_factory (atk_get_default_registry (), GTK_TYPE_WIDGET);
        parent_type = atk_object_factory_get_accessible_type (factory);

        type = gal_a11y_type_register_static_with_private (PARENT_TYPE, "GalA11yETable", &info, 0,
                                   sizeof (GalA11yETablePrivate), &priv_offset);
        g_type_add_interface_static (type, ATK_TYPE_COMPONENT, &atk_component_info);
    }

    return type;
}

AtkObject *
gal_a11y_e_table_new (GObject *widget)
{
    GalA11yETable *a11y;
    ETable *table;

    table = E_TABLE (widget);

    a11y = g_object_new (gal_a11y_e_table_get_type (), NULL);

    /* FIXME No way to do this in GTK 3. */
    /*GTK_ACCESSIBLE (a11y)->widget = GTK_WIDGET (widget);*/

    /* we need to init all the children for multiple table items */
    if (table && gtk_widget_get_mapped (GTK_WIDGET (table)) && table->group && E_IS_TABLE_GROUP_CONTAINER (table->group)) {
        /* Ref it here so that it is still valid in the idle function */
        /* It will be unrefed in the idle function */
        g_object_ref (a11y);
        g_object_ref (widget);

        g_idle_add ((GSourceFunc) init_child_item, a11y);
    }

    return ATK_OBJECT (a11y);
}

void
gal_a11y_e_table_init (void)
{
    if (atk_get_root ())
        atk_registry_set_factory_type (atk_get_default_registry (),
                        E_TYPE_TABLE,
                        gal_a11y_e_table_factory_get_type ());

}