aboutsummaryrefslogtreecommitdiffstats
path: root/widgets/table/e-tree-memory-callbacks.c
blob: 562a47386cc4fd67e5d6689a9a87069ba9566e59 (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
/*
 *
 * 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:
 *      Chris Lahey <clahey@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#include <config.h>

#include <gtk/gtk.h>

#include "e-util/e-util.h"

#include "e-tree-memory-callbacks.h"

G_DEFINE_TYPE (ETreeMemoryCallbacks, e_tree_memory_callbacks, E_TREE_MEMORY_TYPE)

static GdkPixbuf *
etmc_icon_at (ETreeModel *etm, ETreePath node)
{
    ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);

    return etmc->icon_at (etm, node, etmc->model_data);
}

static int
etmc_column_count (ETreeModel *etm)
{
    ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);

    if (etmc->column_count)
        return etmc->column_count (etm, etmc->model_data);
    else
        return 0;
}


static gboolean
etmc_has_save_id (ETreeModel *etm)
{
    ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);

    if (etmc->has_save_id)
        return etmc->has_save_id (etm, etmc->model_data);
    else
        return FALSE;
}

static gchar *
etmc_get_save_id (ETreeModel *etm, ETreePath node)
{
    ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);

    if (etmc->get_save_id)
        return etmc->get_save_id (etm, node, etmc->model_data);
    else
        return NULL;
}

static gboolean
etmc_has_get_node_by_id (ETreeModel *etm)
{
    ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);

    if (etmc->has_get_node_by_id)
        return etmc->has_get_node_by_id (etm, etmc->model_data);
    else
        return FALSE;
}

static ETreePath
etmc_get_node_by_id (ETreeModel *etm, const gchar *save_id)
{
    ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);

    if (etmc->get_node_by_id)
        return etmc->get_node_by_id (etm, save_id, etmc->model_data);
    else
        return NULL;
}

static gpointer
etmc_sort_value_at (ETreeModel *etm, ETreePath node, gint col)
{
    ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);

    if (etmc->sort_value_at)
        return etmc->sort_value_at (etm, node, col, etmc->model_data);
    else
        return etmc->value_at (etm, node, col, etmc->model_data);
}

static gpointer
etmc_value_at (ETreeModel *etm, ETreePath node, gint col)
{
    ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);

    return etmc->value_at (etm, node, col, etmc->model_data);
}

static void
etmc_set_value_at (ETreeModel *etm, ETreePath node, gint col, gconstpointer val)
{
    ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);

    etmc->set_value_at (etm, node, col, val, etmc->model_data);
}

static gboolean
etmc_is_editable (ETreeModel *etm, ETreePath node, gint col)
{
    ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);

    return etmc->is_editable (etm, node, col, etmc->model_data);
}


/* The default for etmc_duplicate_value is to return the raw value. */
static gpointer
etmc_duplicate_value (ETreeModel *etm, gint col, gconstpointer value)
{
    ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);

    if (etmc->duplicate_value)
        return etmc->duplicate_value (etm, col, value, etmc->model_data);
    else
        return (gpointer)value;
}

static void
etmc_free_value (ETreeModel *etm, gint col, gpointer value)
{
    ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);

    if (etmc->free_value)
        etmc->free_value (etm, col, value, etmc->model_data);
}

static gpointer
etmc_initialize_value (ETreeModel *etm, gint col)
{
    ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);

    if (etmc->initialize_value)
        return etmc->initialize_value (etm, col, etmc->model_data);
    else
        return NULL;
}

static gboolean
etmc_value_is_empty (ETreeModel *etm, gint col, gconstpointer value)
{
    ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);

    if (etmc->value_is_empty)
        return etmc->value_is_empty (etm, col, value, etmc->model_data);
    else
        return FALSE;
}

static gchar *
etmc_value_to_string (ETreeModel *etm, gint col, gconstpointer value)
{
    ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);

    if (etmc->value_to_string)
        return etmc->value_to_string (etm, col, value, etmc->model_data);
    else
        return g_strdup ("");
}

static void
e_tree_memory_callbacks_class_init (ETreeMemoryCallbacksClass *klass)
{
    ETreeModelClass *model_class        = E_TREE_MODEL_CLASS (klass);

    model_class->icon_at            = etmc_icon_at;

    model_class->column_count       = etmc_column_count;

    model_class->has_save_id        = etmc_has_save_id;
    model_class->get_save_id        = etmc_get_save_id;

    model_class->has_get_node_by_id = etmc_has_get_node_by_id;
    model_class->get_node_by_id     = etmc_get_node_by_id;

    model_class->sort_value_at  = etmc_sort_value_at;
    model_class->value_at           = etmc_value_at;
    model_class->set_value_at       = etmc_set_value_at;
    model_class->is_editable        = etmc_is_editable;

    model_class->duplicate_value    = etmc_duplicate_value;
    model_class->free_value         = etmc_free_value;
    model_class->initialize_value   = etmc_initialize_value;
    model_class->value_is_empty     = etmc_value_is_empty;
    model_class->value_to_string    = etmc_value_to_string;
}

static void
e_tree_memory_callbacks_init (ETreeMemoryCallbacks *etmc)
{
    /* nothing to do */
}

/**
 * e_tree_memory_callbacks_new:
 *
 * This initializes a new ETreeMemoryCallbacksModel object.
 * ETreeMemoryCallbacksModel is an implementaiton of the somewhat
 * abstract class ETreeMemory.  The ETreeMemoryCallbacksModel is
 * designed to allow people to easily create ETreeMemorys without
 * having to create a new GType derived from ETreeMemory every time
 * they need one.
 *
 * Instead, ETreeMemoryCallbacksModel uses a setup based in callback functions, every
 * callback function signature mimics the signature of each ETreeModel method
 * and passes the extra @data pointer to each one of the method to provide them
 * with any context they might want to use.
 *
 * ETreeMemoryCallbacks is to ETreeMemory as ETableSimple is to ETableModel.
 *
 * Return value: An ETreeMemoryCallbacks object (which is also an
 * ETreeMemory and thus an ETreeModel object).
 *
 */
ETreeModel *
e_tree_memory_callbacks_new  (ETreeMemoryCallbacksIconAtFn icon_at,

                  ETreeMemoryCallbacksColumnCountFn        column_count,

                  ETreeMemoryCallbacksHasSaveIdFn          has_save_id,
                  ETreeMemoryCallbacksGetSaveIdFn          get_save_id,

                  ETreeMemoryCallbacksHasGetNodeByIdFn     has_get_node_by_id,
                  ETreeMemoryCallbacksGetNodeByIdFn        get_node_by_id,

                  ETreeMemoryCallbacksValueAtFn        sort_value_at,
                  ETreeMemoryCallbacksValueAtFn            value_at,
                  ETreeMemoryCallbacksSetValueAtFn         set_value_at,
                  ETreeMemoryCallbacksIsEditableFn         is_editable,

                  ETreeMemoryCallbacksDuplicateValueFn     duplicate_value,
                  ETreeMemoryCallbacksFreeValueFn          free_value,
                  ETreeMemoryCallbacksInitializeValueFn    initialize_value,
                  ETreeMemoryCallbacksValueIsEmptyFn       value_is_empty,
                  ETreeMemoryCallbacksValueToStringFn      value_to_string,

                  gpointer                                 model_data)
{
    ETreeMemoryCallbacks *etmc;

    etmc = g_object_new (E_TREE_MEMORY_CALLBACKS_TYPE, NULL);

    etmc->icon_at            = icon_at;

    etmc->column_count       = column_count;

    etmc->has_save_id        = has_save_id;
    etmc->get_save_id        = get_save_id;

    etmc->has_get_node_by_id = has_get_node_by_id;
    etmc->get_node_by_id     = get_node_by_id;

    etmc->sort_value_at  = sort_value_at;
    etmc->value_at           = value_at;
    etmc->set_value_at       = set_value_at;
    etmc->is_editable        = is_editable;

    etmc->duplicate_value    = duplicate_value;
    etmc->free_value         = free_value;
    etmc->initialize_value   = initialize_value;
    etmc->value_is_empty     = value_is_empty;
    etmc->value_to_string    = value_to_string;

    etmc->model_data         = model_data;

    return (ETreeModel*)etmc;
}