aboutsummaryrefslogtreecommitdiffstats
path: root/a11y/e-table/gal-a11y-e-cell-tree.c
blob: e6ff75667b10a284956db9929441e8989cf2b8cb (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
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Authors: 
 *   Tim Wo <tim.wo@sun.com>, Sun Microsystem Inc. 2003.
 *
 * Copyright (C) 2002 Ximian, Inc.
 */

#include <config.h>
#include <atk/atk.h>
#include "gal-a11y-e-cell-tree.h"
#include "gal-a11y-util.h"
#include "gal/e-table/e-cell-tree.h"
#include "gal/e-table/e-table.h"
#include "gal/e-table/e-tree-table-adapter.h"

#define CS_CLASS(a11y) (G_TYPE_INSTANCE_GET_CLASS ((a11y), C_TYPE_STREAM, GalA11yECellTreeClass))
static AtkObjectClass *a11y_parent_class;
#define A11Y_PARENT_TYPE (gal_a11y_e_cell_get_type ())

static void
ectr_model_row_changed_cb (ETableModel *etm,
               gint row,
               GalA11yECell *a11y)
{
    ETreePath node;
    ETreeModel *tree_model;
    ETreeTableAdapter *tree_table_adapter;

    g_return_if_fail (a11y);
    if (a11y->row != row)
        return;

    node = e_table_model_value_at (etm, -1, a11y->row);
    tree_model = e_table_model_value_at (etm, -2, a11y->row);
    tree_table_adapter = e_table_model_value_at (etm, -3, a11y->row);

    if (e_tree_model_node_is_expandable (tree_model, node)) {
        gboolean is_exp = e_tree_table_adapter_node_is_expanded (tree_table_adapter, node);
        if (is_exp)
            gal_a11y_e_cell_add_state (a11y, ATK_STATE_EXPANDED, TRUE);
        else
            gal_a11y_e_cell_remove_state (a11y, ATK_STATE_EXPANDED, TRUE);
    }
}

static void
ectr_subcell_weak_ref (GalA11yECellTree *a11y,
               GalA11yECell     *subcell_a11y)
{
    g_signal_handler_disconnect (GAL_A11Y_E_CELL (a11y)->item->table_model,
                     a11y->model_row_changed_id);
    g_object_unref (a11y);
}

static void
ectr_do_action_expand (AtkAction *action)
{
    GalA11yECell *a11y;
    ETableModel *table_model;
        ETreePath node;
    ETreeModel *tree_model;
        ETreeTableAdapter *tree_table_adapter;
        
        a11y = GAL_A11Y_E_CELL (action);
    table_model = a11y->item->table_model;
    node = e_table_model_value_at (table_model, -1, a11y->row);
    tree_model = e_table_model_value_at (table_model, -2, a11y->row);
    tree_table_adapter = e_table_model_value_at (table_model, -3, a11y->row);

    if (e_tree_model_node_is_expandable (tree_model, node)) {
        e_tree_table_adapter_node_set_expanded (tree_table_adapter,
                            node,
                            TRUE);
        gal_a11y_e_cell_add_state (a11y, ATK_STATE_EXPANDED, TRUE);
    }
}

static void
ectr_do_action_collapse (AtkAction *action)
{
    GalA11yECell *a11y;
    ETableModel *table_model;
        ETreePath node;
    ETreeModel *tree_model;
        ETreeTableAdapter *tree_table_adapter;
        
        a11y = GAL_A11Y_E_CELL (action);
    table_model = a11y->item->table_model;
        node = e_table_model_value_at (table_model, -1, a11y->row);
    tree_model = e_table_model_value_at (table_model, -2, a11y->row);
        tree_table_adapter = e_table_model_value_at (table_model, -3, a11y->row);

    if (e_tree_model_node_is_expandable (tree_model, node)) {
        e_tree_table_adapter_node_set_expanded (tree_table_adapter,
                            node,
                            FALSE);
        gal_a11y_e_cell_remove_state (a11y, ATK_STATE_EXPANDED, TRUE);
    }
}

static void
ectr_class_init (GalA11yECellTreeClass *klass)
{
    a11y_parent_class        = g_type_class_ref (A11Y_PARENT_TYPE);
}

static void
ectr_init (GalA11yECellTree *a11y)
{
}

GType
gal_a11y_e_cell_tree_get_type (void)
{
    static GType type = 0;

    if (!type) {
        GTypeInfo info = {
            sizeof (GalA11yECellTreeClass),
            (GBaseInitFunc) NULL,
            (GBaseFinalizeFunc) NULL,
            (GClassInitFunc) ectr_class_init,
            (GClassFinalizeFunc) NULL,
            NULL, /* class_data */
            sizeof (GalA11yECellTree),
            0,
            (GInstanceInitFunc) ectr_init,
            NULL /* value_cell_text */
        };

        type = g_type_register_static (A11Y_PARENT_TYPE, "GalA11yECellTree", &info, 0);
        gal_a11y_e_cell_type_add_action_interface (type);
    }

    return type;
}

AtkObject *
gal_a11y_e_cell_tree_new (ETableItem *item,
              ECellView  *cell_view,
              AtkObject  *parent,
              int         model_col,
              int         view_col,
              int         row)
{
    AtkObject *subcell_a11y;
    GalA11yECellTree *a11y;
        GtkWidget *e_table;

        ETreePath node;
        ETreeModel *tree_model;
        ETreeTableAdapter *tree_table_adapter;
 
    ECellView *subcell_view;
    subcell_view = e_cell_tree_view_get_subcell_view (cell_view);

    if (subcell_view->ecell) {
        subcell_a11y = gal_a11y_e_cell_registry_get_object (NULL,
                                    item,
                                    subcell_view,
                                    parent,
                                    model_col,
                                    view_col,
                                    row);
        gal_a11y_e_cell_add_action (subcell_a11y,
                        "expand",
                        "expands the row in the ETree containing this cell",
                        NULL,
                        (ACTION_FUNC)ectr_do_action_expand);

        gal_a11y_e_cell_add_action (subcell_a11y,
                        "collapse",
                        "collapses the row in the ETree containing this cell",
                        NULL,
                        (ACTION_FUNC)ectr_do_action_collapse);

        /* init AtkStates for the cell's a11y object */
        node = e_table_model_value_at (item->table_model, -1, row);
        tree_model = e_table_model_value_at (item->table_model, -2, row);
        tree_table_adapter = e_table_model_value_at (item->table_model, -3, row);
        if (e_tree_model_node_is_expandable (tree_model, node)) {
            gal_a11y_e_cell_add_state (subcell_a11y, ATK_STATE_EXPANDABLE, FALSE);
            if (e_tree_table_adapter_node_is_expanded (tree_table_adapter, node))
                gal_a11y_e_cell_add_state (subcell_a11y, ATK_STATE_EXPANDED, FALSE);
        }
    }
    else
        subcell_a11y = NULL;

    /* create a companion a11y object, this object has type GalA11yECellTree
       and it connects to some signals to determine whether a tree cell is
       expanded or collapsed */
    a11y = g_object_new (gal_a11y_e_cell_tree_get_type (), NULL);
    gal_a11y_e_cell_construct (a11y,
                   item,
                   cell_view,
                   parent,
                   model_col,
                   view_col,
                   row);
    a11y->model_row_changed_id =
        g_signal_connect (item->table_model, "model_row_changed",
                  G_CALLBACK (ectr_model_row_changed_cb),
                  subcell_a11y);
    g_object_weak_ref (subcell_a11y, ectr_subcell_weak_ref, a11y);

    return subcell_a11y;
}