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
|
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Authors:
* Christopher James Lahey <clahey@umich.edu>
*
* Copyright (C) 2000 Ximian, Inc.
* Copyright (C) 1999 The Free Software Foundation
*/
#include <config.h>
#include "e-list-iterator.h"
#include "e-list.h"
static void e_list_iterator_init (EListIterator *list);
static void e_list_iterator_class_init (EListIteratorClass *klass);
static void e_list_iterator_invalidate (EIterator *iterator);
static gboolean e_list_iterator_is_valid (EIterator *iterator);
static void e_list_iterator_set (EIterator *iterator,
const void *object);
static void e_list_iterator_delete (EIterator *iterator);
static void e_list_iterator_insert (EIterator *iterator,
const void *object,
gboolean before);
static gboolean e_list_iterator_prev (EIterator *iterator);
static gboolean e_list_iterator_next (EIterator *iterator);
static void e_list_iterator_reset (EIterator *iterator);
static void e_list_iterator_last (EIterator *iterator);
static const void *e_list_iterator_get (EIterator *iterator);
static void e_list_iterator_destroy (GtkObject *object);
#define PARENT_TYPE (e_iterator_get_type ())
static GtkObjectClass *parent_class;
#define PARENT_CLASS (E_ITERATOR_CLASS(parent_class))
/**
* e_list_iterator_get_type:
* @void:
*
* Registers the &EListIterator class if necessary, and returns the type ID
* associated to it.
*
* Return value: The type ID of the &EListIterator class.
**/
GtkType
e_list_iterator_get_type (void)
{
static GtkType type = 0;
if (!type) {
GtkTypeInfo info = {
"EListIterator",
sizeof (EListIterator),
sizeof (EListIteratorClass),
(GtkClassInitFunc) e_list_iterator_class_init,
(GtkObjectInitFunc) e_list_iterator_init,
NULL, /* reserved_1 */
NULL, /* reserved_2 */
(GtkClassInitFunc) NULL
};
type = gtk_type_unique (PARENT_TYPE, &info);
}
return type;
}
static void
e_list_iterator_class_init (EListIteratorClass *klass)
{
GtkObjectClass *object_class;
EIteratorClass *iterator_class;
object_class = GTK_OBJECT_CLASS(klass);
iterator_class = E_ITERATOR_CLASS(klass);
parent_class = gtk_type_class (PARENT_TYPE);
object_class->destroy = e_list_iterator_destroy;
iterator_class->invalidate = e_list_iterator_invalidate;
iterator_class->get = e_list_iterator_get;
iterator_class->reset = e_list_iterator_reset;
iterator_class->last = e_list_iterator_last;
iterator_class->next = e_list_iterator_next;
iterator_class->prev = e_list_iterator_prev;
iterator_class->delete = e_list_iterator_delete;
iterator_class->insert = e_list_iterator_insert;
iterator_class->set = e_list_iterator_set;
iterator_class->is_valid = e_list_iterator_is_valid;
}
/**
* e_list_iterator_init:
*/
static void
e_list_iterator_init (EListIterator *list)
{
}
EIterator *
e_list_iterator_new (EList *list)
{
EListIterator *iterator = gtk_type_new(e_list_iterator_get_type());
iterator->list = list;
gtk_object_ref(GTK_OBJECT(list));
iterator->iterator = list->list;
return E_ITERATOR(iterator);
}
/*
* Virtual functions:
*/
static void
e_list_iterator_destroy (GtkObject *object)
{
EListIterator *iterator = E_LIST_ITERATOR(object);
e_list_remove_iterator(iterator->list, E_ITERATOR(iterator));
gtk_object_unref(GTK_OBJECT(iterator->list));
}
static const void *
e_list_iterator_get (EIterator *_iterator)
{
EListIterator *iterator = E_LIST_ITERATOR(_iterator);
if (iterator->iterator)
return iterator->iterator->data;
else
return NULL;
}
static void
e_list_iterator_reset (EIterator *_iterator)
{
EListIterator *iterator = E_LIST_ITERATOR(_iterator);
iterator->iterator = iterator->list->list;
}
static void
e_list_iterator_last (EIterator *_iterator)
{
EListIterator *iterator = E_LIST_ITERATOR(_iterator);
iterator->iterator = g_list_last(iterator->list->list);
}
static gboolean
e_list_iterator_next (EIterator *_iterator)
{
EListIterator *iterator = E_LIST_ITERATOR(_iterator);
if (iterator->iterator)
iterator->iterator = g_list_next(iterator->iterator);
else
iterator->iterator = iterator->list->list;
return (iterator->iterator != NULL);
}
static gboolean
e_list_iterator_prev (EIterator *_iterator)
{
EListIterator *iterator = E_LIST_ITERATOR(_iterator);
if (iterator->iterator)
iterator->iterator = g_list_previous(iterator->iterator);
else
iterator->iterator = g_list_last(iterator->list->list);
return (iterator->iterator != NULL);
}
static void
e_list_iterator_insert (EIterator *_iterator,
const void *object,
gboolean before)
{
EListIterator *iterator = E_LIST_ITERATOR(_iterator);
void *data;
if (iterator->list->copy)
data = iterator->list->copy(object, iterator->list->closure);
else
data = (void *) object;
if (iterator->iterator) {
if (before) {
iterator->list->list = g_list_first(g_list_prepend(iterator->iterator, data));
iterator->iterator = iterator->iterator->prev;
} else {
if (iterator->iterator->next)
g_list_prepend(iterator->iterator->next, data);
else
g_list_append(iterator->iterator, data);
iterator->iterator = iterator->iterator->next;
}
e_list_invalidate_iterators(iterator->list, E_ITERATOR(iterator));
} else {
if (before) {
iterator->list->list = g_list_append(iterator->list->list, data);
iterator->iterator = g_list_last(iterator->list->list);
} else {
iterator->list->list = g_list_prepend(iterator->list->list, data);
iterator->iterator = iterator->list->list;
}
e_list_invalidate_iterators(iterator->list, E_ITERATOR(iterator));
}
}
static void
e_list_iterator_delete (EIterator *_iterator)
{
EListIterator *iterator = E_LIST_ITERATOR(_iterator);
if (iterator->iterator) {
e_list_remove_link (iterator->list, iterator->iterator);
}
}
static void
e_list_iterator_set (EIterator *_iterator,
const void *object)
{
EListIterator *iterator = E_LIST_ITERATOR(_iterator);
if (iterator->iterator) {
if (iterator->list->free)
iterator->list->free(iterator->iterator->data, iterator->list->closure);
if (iterator->list->copy)
iterator->iterator->data = iterator->list->copy(object, iterator->list->closure);
else
iterator->iterator->data = (void *) object;
}
}
static gboolean
e_list_iterator_is_valid (EIterator *_iterator)
{
EListIterator *iterator = E_LIST_ITERATOR(_iterator);
return iterator->iterator != NULL;
}
static void
e_list_iterator_invalidate (EIterator *_iterator)
{
EListIterator *iterator = E_LIST_ITERATOR(_iterator);
iterator->iterator = NULL;
}
|
