1 | /* |
2 | Copyright (c) 2007 Volker Krause <vkrause@kde.org> |
3 | |
4 | This library is free software; you can redistribute it and/or modify it |
5 | under the terms of the GNU Library General Public License as published by |
6 | the Free Software Foundation; either version 2 of the License, or (at your |
7 | option) any later version. |
8 | |
9 | This library is distributed in the hope that it will be useful, but WITHOUT |
10 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
11 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public |
12 | License for more details. |
13 | |
14 | You should have received a copy of the GNU Library General Public License |
15 | along with this library; see the file COPYING.LIB. If not, write to the |
16 | Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
17 | 02110-1301, USA. |
18 | */ |
19 | |
20 | #include "changerecorder.h" |
21 | #include "changerecorder_p.h" |
22 | |
23 | #include <kdebug.h> |
24 | #include <QtCore/QSettings> |
25 | |
26 | using namespace Akonadi; |
27 | |
28 | ChangeRecorder::ChangeRecorder(QObject *parent) |
29 | : Monitor(new ChangeRecorderPrivate(0, this), parent) |
30 | { |
31 | } |
32 | |
33 | ChangeRecorder::ChangeRecorder(ChangeRecorderPrivate *privateclass, QObject *parent) |
34 | : Monitor(privateclass, parent) |
35 | { |
36 | } |
37 | |
38 | ChangeRecorder::~ChangeRecorder() |
39 | { |
40 | } |
41 | |
42 | void ChangeRecorder::setConfig(QSettings *settings) |
43 | { |
44 | Q_D(ChangeRecorder); |
45 | if (settings) { |
46 | d->settings = settings; |
47 | Q_ASSERT(d->pendingNotifications.isEmpty()); |
48 | d->loadNotifications(); |
49 | } else if (d->settings) { |
50 | if (d->enableChangeRecording) { |
51 | d->saveNotifications(); |
52 | } |
53 | d->settings = settings; |
54 | } |
55 | } |
56 | |
57 | void ChangeRecorder::replayNext() |
58 | { |
59 | Q_D(ChangeRecorder); |
60 | |
61 | if (!d->enableChangeRecording) { |
62 | return; |
63 | } |
64 | |
65 | if (!d->pendingNotifications.isEmpty()) { |
66 | const NotificationMessageV3 msg = d->pendingNotifications.head(); |
67 | if (d->ensureDataAvailable(msg)) { |
68 | if (!d->emitNotification(msg)) { |
69 | //If no signal was emitted (e.g. because noone was connected to it), noone is going to call changeProcessed, so we help ourselves |
70 | d->dequeueNotification(); |
71 | return replayNext(); |
72 | } |
73 | } else if (d->translateAndCompress(d->pipeline, msg)) { |
74 | // The msg is now in both pipeline and pendingNotifications. |
75 | // When data is available, MonitorPrivate::flushPipeline will emitNotification. |
76 | // When changeProcessed is called, we'll finally remove it from pendingNotifications. |
77 | } else { |
78 | // In the case of a move where both source and destination are |
79 | // ignored, we ignore the message and process the next one. |
80 | d->dequeueNotification(); |
81 | return replayNext(); |
82 | } |
83 | } else { |
84 | // This is necessary when none of the notifications were accepted / processed |
85 | // above, and so there is no one to call changeProcessed() and the ChangeReplay task |
86 | // will be stuck forever in the ResourceScheduler. |
87 | emit nothingToReplay(); |
88 | } |
89 | } |
90 | |
91 | bool ChangeRecorder::isEmpty() const |
92 | { |
93 | Q_D(const ChangeRecorder); |
94 | return d->pendingNotifications.isEmpty(); |
95 | } |
96 | |
97 | void ChangeRecorder::changeProcessed() |
98 | { |
99 | Q_D(ChangeRecorder); |
100 | |
101 | if (!d->enableChangeRecording) { |
102 | return; |
103 | } |
104 | |
105 | // changerecordertest.cpp calls changeProcessed after receiving nothingToReplay, |
106 | // so test for emptiness. Not sure real code does this though. |
107 | // Q_ASSERT( !d->pendingNotifications.isEmpty() ) |
108 | if (!d->pendingNotifications.isEmpty()) { |
109 | d->dequeueNotification(); |
110 | } |
111 | } |
112 | |
113 | void ChangeRecorder::setChangeRecordingEnabled(bool enable) |
114 | { |
115 | Q_D(ChangeRecorder); |
116 | if (d->enableChangeRecording == enable) { |
117 | return; |
118 | } |
119 | d->enableChangeRecording = enable; |
120 | if (enable) { |
121 | d->m_needFullSave = true; |
122 | d->notificationsLoaded(); |
123 | } else { |
124 | d->dispatchNotifications(); |
125 | } |
126 | } |
127 | |
128 | QString Akonadi::ChangeRecorder::dumpNotificationListToString() const |
129 | { |
130 | Q_D(const ChangeRecorder); |
131 | return d->dumpNotificationListToString(); |
132 | } |
133 | |