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
|
/*
* Copyright (C) 2005 Marco Pesenti Gritti
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include "config.h"
#include <glib/gi18n.h>
#include "ev-history.h"
struct _EvHistoryPrivate
{
GList *links;
int current_index;
};
enum {
PROP_0,
PROP_INDEX
};
static void ev_history_init (EvHistory *history);
static void ev_history_class_init (EvHistoryClass *class);
G_DEFINE_TYPE (EvHistory, ev_history, G_TYPE_OBJECT)
#define EV_HISTORY_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_HISTORY, EvHistoryPrivate))
static void
ev_history_init (EvHistory *history)
{
history->priv = EV_HISTORY_GET_PRIVATE (history);
history->priv->links = NULL;
history->priv->current_index = -1;
}
static void
free_links_list (GList *l)
{
g_list_foreach (l, (GFunc)g_object_unref, NULL);
g_list_free (l);
}
static void
ev_history_finalize (GObject *object)
{
EvHistory *history = EV_HISTORY (object);
free_links_list (history->priv->links);
G_OBJECT_CLASS (ev_history_parent_class)->finalize (object);
}
static void
ev_history_get_property (GObject *object, guint prop_id, GValue *value,
GParamSpec *param_spec)
{
EvHistory *self;
self = EV_HISTORY (object);
switch (prop_id) {
case PROP_INDEX:
g_value_set_int (value, self->priv->current_index);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object,
prop_id,
param_spec);
break;
}
}
static void
ev_history_set_property (GObject *object, guint prop_id, const GValue *value,
GParamSpec *param_spec)
{
EvHistory *self;
self = EV_HISTORY (object);
switch (prop_id) {
case PROP_INDEX:
ev_history_set_current_index (self, g_value_get_int (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object,
prop_id,
param_spec);
break;
}
}
static void
ev_history_class_init (EvHistoryClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->finalize = ev_history_finalize;
object_class->set_property = ev_history_set_property;
object_class->get_property = ev_history_get_property;
g_object_class_install_property (object_class,
PROP_INDEX,
g_param_spec_int ("index",
"Current Index",
"The current index",
-1,
G_MAXINT,
0,
G_PARAM_READWRITE));
g_type_class_add_private (object_class, sizeof (EvHistoryPrivate));
}
void
ev_history_add_link (EvHistory *history, EvLink *link)
{
int length;
g_return_if_fail (EV_IS_HISTORY (history));
g_return_if_fail (EV_IS_LINK (link));
length = g_list_length (history->priv->links);
if (history->priv->current_index < length - 1) {
GList *l = g_list_nth (history->priv->links,
history->priv->current_index + 1);
if (l->prev) {
l->prev->next = NULL;
free_links_list (l);
} else {
free_links_list (history->priv->links);
history->priv->links = NULL;
}
}
g_object_ref (link);
history->priv->links = g_list_append (history->priv->links,
link);
length = g_list_length (history->priv->links);
history->priv->current_index = length - 1;
}
void
ev_history_add_page (EvHistory *history, int page, const gchar *label)
{
EvLink *link;
EvLinkDest *dest;
EvLinkAction *action;
gchar *title;
g_return_if_fail (EV_IS_HISTORY (history));
title = g_strdup_printf (_("Page: %s"), label);
dest = ev_link_dest_new_page (page);
action = ev_link_action_new_dest (dest);
link = ev_link_new (title, action);
g_free (title);
ev_history_add_link (history, link);
}
EvLink *
ev_history_get_link_nth (EvHistory *history, int index)
{
GList *l;
g_return_val_if_fail (EV_IS_HISTORY (history), NULL);
l = g_list_nth (history->priv->links, index);
return EV_LINK (l->data);
}
int
ev_history_get_n_links (EvHistory *history)
{
g_return_val_if_fail (EV_IS_HISTORY (history), -1);
return g_list_length (history->priv->links);
}
int
ev_history_get_current_index (EvHistory *history)
{
g_return_val_if_fail (EV_IS_HISTORY (history), -1);
return history->priv->current_index;
}
void
ev_history_set_current_index (EvHistory *history, int index)
{
g_return_if_fail (EV_IS_HISTORY (history));
history->priv->current_index = index;
g_object_notify (G_OBJECT (history), "index");
}
EvHistory *
ev_history_new (void)
{
return EV_HISTORY (g_object_new (EV_TYPE_HISTORY, NULL));
}
|
