aboutsummaryrefslogtreecommitdiffstats
path: root/a11y/e-table/gal-a11y-e-cell.c
blob: a387c6ed6f954449d41f280e660ac87959bde586 (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
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Authors: 
 *   Christopher James Lahey <clahey@ximian.com>
 *
 * Copyright (C) 2002 Ximian, Inc.
 */

#include <config.h>
#include "gal/e-table/e-table.h"
#include "gal-a11y-e-cell.h"
#include "gal-a11y-util.h"
#include <atk/atkobject.h>
#include <atk/atkcomponent.h>
#include <atk/atkaction.h>

#define CS_CLASS(a11y) (G_TYPE_INSTANCE_GET_CLASS ((a11y), C_TYPE_STREAM, GalA11yECellClass))
static GObjectClass *parent_class;
#define PARENT_TYPE (atk_object_get_type ())


#if 0
static void
unref_item (gpointer user_data, GObject *obj_loc)
{
    GalA11yECell *a11y = GAL_A11Y_E_CELL (user_data);
    a11y->item = NULL;
    g_object_unref (a11y);
}

static void
unref_cell (gpointer user_data, GObject *obj_loc)
{
    GalA11yECell *a11y = GAL_A11Y_E_CELL (user_data);
    a11y->cell_view = NULL;
    g_object_unref (a11y);
}
#endif 

static void
eti_dispose (GObject *object)
{
    GalA11yECell *a11y = GAL_A11Y_E_CELL (object);

#if 0
    if (a11y->item)
        g_object_unref (G_OBJECT (a11y->item));  /*, unref_item, a11y); */
    if (a11y->cell_view)
        g_object_unref (G_OBJECT (a11y->cell_view)); /*, unref_cell, a11y); */
    if (a11y->parent)
        g_object_unref (a11y->parent);
#endif
    a11y->item = NULL;
    a11y->cell_view = NULL;
    a11y->parent = NULL;
    a11y->model_col = -1;
    a11y->view_col = -1;
    a11y->row = -1;

    if (parent_class->dispose)
        parent_class->dispose (object);
}

/* Static functions */
static AtkObject*
eti_get_parent (AtkObject *accessible)
{
    GalA11yECell *a11y = GAL_A11Y_E_CELL (accessible);
    return a11y->parent;
}

static gint
eti_get_index_in_parent (AtkObject *accessible)
{
    GalA11yECell *a11y = GAL_A11Y_E_CELL (accessible);

    return a11y->row * a11y->item->cols + a11y->view_col;
}


/* Component IFace */
static void
eti_get_extents (AtkComponent *component,
        gint *x,
        gint *y,
        gint *width,
        gint *height,
        AtkCoordType coord_type)
{
    GalA11yECell *a11y = GAL_A11Y_E_CELL (component);
    int row;
    int col;
    int xval;
    int yval;

    row = a11y->row;
    col = a11y->view_col;


    e_table_item_get_cell_geometry (a11y->item,
                    &row, 
                    &col,
                    &xval,
                    &yval,
                    width,
                    height);

    atk_component_get_position (ATK_COMPONENT (a11y->parent),
                    x, y, coord_type);
    if (x && *x != G_MININT)
        *x += xval;
    if (y && *y != G_MININT)
        *y += yval;
}

static gboolean
eti_grab_focus (AtkComponent *component)
{
    GalA11yECell *a11y;
    gint view_row;
    GtkWidget *e_table, *toplevel;

    a11y = GAL_A11Y_E_CELL (component);
    e_table = gtk_widget_get_parent (GNOME_CANVAS_ITEM (a11y->item)->canvas);
    view_row = e_table_view_to_model_row (E_TABLE (e_table), a11y->row);

    e_selection_model_clear (a11y->item->selection);
    e_selection_model_select_single_row (a11y->item->selection, view_row);

    gtk_widget_grab_focus (e_table);
    toplevel = gtk_widget_get_toplevel (e_table);
    if (GTK_WIDGET_TOPLEVEL (toplevel))
        gtk_window_present (toplevel);
}

/* Table IFace */

static void
eti_atk_component_iface_init (AtkComponentIface *iface)
{
    iface->get_extents = eti_get_extents;
    iface->grab_focus  = eti_grab_focus;
}

static void
eti_class_init (GalA11yECellClass *klass)
{
    AtkObjectClass *atk_object_class = ATK_OBJECT_CLASS (klass);
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    parent_class                          = g_type_class_ref (PARENT_TYPE);

    object_class->dispose                 = eti_dispose;

    atk_object_class->get_parent          = eti_get_parent;
    atk_object_class->get_index_in_parent = eti_get_index_in_parent;
}

static void
eti_init (GalA11yECell *a11y)
{
    a11y->item = NULL;
    a11y->cell_view = NULL;
    a11y->parent = NULL;
    a11y->model_col = -1;
    a11y->view_col = -1;
    a11y->row = -1;
}


static ActionInfo *
_gal_a11y_e_cell_get_action_info (GalA11yECell *cell,
                            gint     index)
{
    GList *list_node;
                                                                                
    g_return_val_if_fail (GAL_A11Y_IS_E_CELL (cell), NULL);
    if (cell->action_list == NULL)
        return NULL;
    list_node = g_list_nth (cell->action_list, index);
    if (!list_node)
        return NULL;
    return (ActionInfo *) (list_node->data);
}

static void
_gal_a11y_e_cell_destroy_action_info (gpointer action_info,
                      gpointer user_data)
{
    ActionInfo *info = (ActionInfo *)action_info;

    g_return_if_fail (info != NULL);
    g_free (info->name);
    g_free (info->description);
    g_free (info->keybinding);
    g_free (info);
}


gboolean
gal_a11y_e_cell_add_action ( GalA11yECell * cell,
                 const gchar *action_name,
                 const gchar *action_description,
                 const gchar *action_keybinding,
                 ACTION_FUNC action_func)
{
    ActionInfo *info;
    g_return_val_if_fail (GAL_A11Y_IS_E_CELL (cell), FALSE);
    info = g_new (ActionInfo, 1);
                                                                              
    if (action_name != NULL)
        info->name = g_strdup (action_name);
    else
        info->name = NULL;

    if (action_description != NULL)
        info->description = g_strdup (action_description);
    else
        info->description = NULL;
    if (action_keybinding != NULL)
        info->keybinding = g_strdup (action_keybinding);
    else
        info->keybinding = NULL;
    info->do_action_func = action_func;

    cell->action_list = g_list_append (cell->action_list, (gpointer) info);
    return TRUE;
}

gboolean
gal_a11y_e_cell_remove_action (GalA11yECell *cell,
                   gint     action_index)
{
    GList *list_node;

    g_return_val_if_fail (GAL_A11Y_IS_E_CELL (cell), FALSE);
    list_node = g_list_nth (cell->action_list, action_index);
    if (!list_node)
        return FALSE;
    g_return_val_if_fail (list_node->data != NULL, FALSE);
    _gal_a11y_e_cell_destroy_action_info (list_node->data, NULL);
    cell->action_list = g_list_remove_link (cell->action_list, list_node);

    return TRUE;
}

gboolean
gal_a11y_e_cell_remove_action_by_name (GalA11yECell *cell,
                       const gchar *action_name)
{
    GList *list_node;
    gboolean action_found= FALSE;
                                                                               
    g_return_val_if_fail (GAL_A11Y_IS_E_CELL (cell), FALSE);
    for (list_node = cell->action_list; list_node && !action_found;
                      list_node = list_node->next) {
        if (!g_strcasecmp (((ActionInfo *)(list_node->data))->name, action_name)) {
            action_found = TRUE;
            break;
        }
    }

    g_return_val_if_fail (action_found, FALSE);
    _gal_a11y_e_cell_destroy_action_info (list_node->data, NULL);
    cell->action_list = g_list_remove_link (cell->action_list, list_node);

    return TRUE;
}

static gint
gal_a11y_e_cell_action_get_n_actions (AtkAction *action)
{
    GalA11yECell *cell = GAL_A11Y_E_CELL(action);
    if (cell->action_list != NULL)
        return g_list_length (cell->action_list);
    else
        return 0;
}

static G_CONST_RETURN gchar *
gal_a11y_e_cell_action_get_name (AtkAction *action,
                           gint      index)
{
    GalA11yECell *cell = GAL_A11Y_E_CELL(action);
    ActionInfo *info = _gal_a11y_e_cell_get_action_info (cell, index);
                                                                                
    if (info == NULL)
        return NULL;
    return info->name;
}

static G_CONST_RETURN gchar *
gal_a11y_e_cell_action_get_description (AtkAction *action,
                    gint      index)
{
    GalA11yECell *cell = GAL_A11Y_E_CELL(action);
    ActionInfo *info = _gal_a11y_e_cell_get_action_info (cell, index);

    if (info == NULL)
        return NULL;
    return info->description;
}

static gboolean
gal_a11y_e_cell_action_set_description (AtkAction   *action,
                    gint        index,
                    const gchar *desc)
{
    GalA11yECell *cell = GAL_A11Y_E_CELL(action);
    ActionInfo *info = _gal_a11y_e_cell_get_action_info (cell, index);
                                                                                
    if (info == NULL)
        return FALSE;
    g_free (info->description);
    info->description = g_strdup (desc);
    return TRUE;
}

static G_CONST_RETURN gchar *
gal_a11y_e_cell_action_get_keybinding (AtkAction *action,
                       gint      index)
{
    GalA11yECell *cell = GAL_A11Y_E_CELL(action);
    ActionInfo *info = _gal_a11y_e_cell_get_action_info (cell, index);
    if (info == NULL)
        return NULL;

    return info->keybinding;
}
                                                                                
static gboolean
idle_do_action (gpointer data)
{
    GalA11yECell *cell;

    cell = GAL_A11Y_E_CELL (data);
    cell->action_idle_handler = 0;
    cell->action_func (cell);
                                                                                
    return FALSE;
}

static gboolean
gal_a11y_e_cell_action_do_action (AtkAction *action,
                  gint      index)
{
    GalA11yECell *cell = GAL_A11Y_E_CELL(action);
    ActionInfo *info = _gal_a11y_e_cell_get_action_info (cell, index);

    if (info == NULL)
        return FALSE;
    g_return_val_if_fail (info->do_action_func, FALSE);
    if (cell->action_idle_handler)
        return FALSE;
    cell->action_func = info->do_action_func;
    cell->action_idle_handler = g_idle_add (idle_do_action, cell);

    return TRUE;
}

static void
gal_a11y_e_cell_atk_action_interface_init (AtkActionIface *iface)
{
  g_return_if_fail (iface != NULL);
                                                                                
  iface->get_n_actions = gal_a11y_e_cell_action_get_n_actions;
  iface->do_action = gal_a11y_e_cell_action_do_action;
  iface->get_name = gal_a11y_e_cell_action_get_name;
  iface->get_description = gal_a11y_e_cell_action_get_description;
  iface->set_description = gal_a11y_e_cell_action_set_description;
  iface->get_keybinding = gal_a11y_e_cell_action_get_keybinding;
}

void
gal_a11y_e_cell_type_add_action_interface (GType type)
{
    static const GInterfaceInfo atk_action_info =
    {
    (GInterfaceInitFunc) gal_a11y_e_cell_atk_action_interface_init,
    (GInterfaceFinalizeFunc) NULL,
    NULL
    };

    g_type_add_interface_static (type, ATK_TYPE_ACTION,
                     &atk_action_info);
}

gboolean
gal_a11y_e_cell_add_state (GalA11yECell     *cell,
               AtkStateType state_type,
               gboolean     emit_signal)
{
    if (!atk_state_set_contains_state (cell->state_set, state_type)) {
        gboolean rc;
                                                                                
        rc = atk_state_set_add_state (cell->state_set, state_type);
        /*
         * The signal should only be generated if the value changed,
         * not when the cell is set up.  So states that are set
         * initially should pass FALSE as the emit_signal argument.
         */
                                                                                
        if (emit_signal) {
            atk_object_notify_state_change (ATK_OBJECT (cell), state_type, TRUE);
            /* If state_type is ATK_STATE_VISIBLE, additional 
               notification */
            if (state_type == ATK_STATE_VISIBLE)
                g_signal_emit_by_name (cell, "visible_data_changed");
        }
    }
}


/**
 * gal_a11y_e_cell_get_type:
 * @void: 
 * 
 * Registers the &GalA11yECell class if necessary, and returns the type ID
 * associated to it.
 * 
 * Return value: The type ID of the &GalA11yECell class.
 **/
GType
gal_a11y_e_cell_get_type (void)
{
    static GType type = 0;

    if (!type) {
        GTypeInfo info = {
            sizeof (GalA11yECellClass),
            (GBaseInitFunc) NULL,
            (GBaseFinalizeFunc) NULL,
            (GClassInitFunc) eti_class_init,
            (GClassFinalizeFunc) NULL,
            NULL, /* class_data */
            sizeof (GalA11yECell),
            0,
            (GInstanceInitFunc) eti_init,
            NULL /* value_cell */
        };

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

        type = g_type_register_static (PARENT_TYPE, "GalA11yECell", &info, 0);
        g_type_add_interface_static (type, ATK_TYPE_COMPONENT, &atk_component_info);
    }

    return type;
}
AtkObject *
gal_a11y_e_cell_new (ETableItem *item,
             ECellView  *cell_view,
             AtkObject  *parent,
             int         model_col,
             int         view_col,
             int         row)
{
    AtkObject *a11y;

    a11y = g_object_new (gal_a11y_e_cell_get_type (), NULL);

    gal_a11y_e_cell_construct (a11y,
                   item,
                   cell_view,
                   parent,
                   model_col,
                   view_col,
                   row);
    return a11y;
}

void
gal_a11y_e_cell_construct (AtkObject  *object,
               ETableItem *item,
               ECellView  *cell_view,
               AtkObject  *parent,
               int         model_col,
               int         view_col,
               int         row)
{
    GalA11yECell *a11y = GAL_A11Y_E_CELL (object);
    a11y->item      = item;
    a11y->cell_view = cell_view;
    a11y->parent    = parent;
    a11y->model_col = model_col;
    a11y->view_col  = view_col;
    a11y->row       = row;
    ATK_OBJECT (a11y) ->role    = ATK_ROLE_TABLE_CELL;

#if 0
    if (parent)
        g_object_ref (parent);

    if (item)
        g_object_ref (G_OBJECT (item)); /*,
                          unref_item,
                          a11y);*/
    if (cell_view)
        g_object_ref (G_OBJECT (cell_view)); /*,
                          unref_cell,
                          a11y);*/
#endif
}