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
|
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* e-tree-memory-callbacks.c: a Tree Model that offers a function pointer
* interface to using ETreeModel, similar to ETableSimple.
*
* Author:
* Chris Toshok (toshok@ximian.com)
*
* (C) 2000 Ximian, Inc. */
#include <config.h>
#include <gtk/gtksignal.h>
#include "gal/util/e-util.h"
#include "e-tree-memory-callbacks.h"
#define PARENT_TYPE 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 char *
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 char *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 void *
etmc_value_at (ETreeModel *etm, ETreePath node, int 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, int col, const void *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, int 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 void *
etmc_duplicate_value (ETreeModel *etm, int col, const void *value)
{
ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);
if (etmc->duplicate_value)
return etmc->duplicate_value (etm, col, value, etmc->model_data);
else
return (void *)value;
}
static void
etmc_free_value (ETreeModel *etm, int col, void *value)
{
ETreeMemoryCallbacks *etmc = E_TREE_MEMORY_CALLBACKS(etm);
if (etmc->free_value)
etmc->free_value (etm, col, value, etmc->model_data);
}
static void *
etmc_initialize_value (ETreeModel *etm, int 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, int col, const void *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 char *
etmc_value_to_string (ETreeModel *etm, int col, const void *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 (GtkObjectClass *object_class)
{
ETreeModelClass *model_class = (ETreeModelClass *) object_class;
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->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;
}
E_MAKE_TYPE(e_tree_memory_callbacks, "ETreeMemoryCallbacks", ETreeMemoryCallbacks, e_tree_memory_callbacks_class_init, NULL, PARENT_TYPE)
/**
* 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 GtkType 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 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 = gtk_type_new (e_tree_memory_callbacks_get_type ());
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->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;
}
|
