Importing recode (rekonq code).

I'm sorry I coudn't perform this with gitsvn or tailor..
but I cannot lose all the evening just for this.
And I need to sleep now..



git-svn-id: svn+ssh://svn.kde.org/home/kde/trunk/playground/network/rekonq@963146 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 90 insertions, 0 deletions

diff --git a/src/autosaver.cpp b/src/autosaver.cpp
new file mode 100644
index 00000000..25bf9016
--- /dev/null
+++ b/src/autosaver.cpp
@@ -0,0 +1,90 @@
+/* ============================================================
+*
+* This file is a part of the rekonq project
+*
+* Copyright (C) 2007-2008 Trolltech ASA. All rights reserved
+* Copyright (C) 2008-2009 by Andrea Diamantini <adjam7 at gmail dot com>
+*
+*
+* 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.
+*
+* ============================================================ */
+
+
+
+// Local Includes
+#include "autosaver.h"
+
+// KDE Includes
+#include <KDebug>
+
+// Qt Includes
+#include <QtCore>
+
+
+#define AUTOSAVE_IN  1000 * 3  // seconds
+#define MAXWAIT      1000 * 15 // seconds
+
+
+AutoSaver::AutoSaver(QObject *parent) : QObject(parent)
+{
+    Q_ASSERT(parent);
+}
+
+
+AutoSaver::~AutoSaver()
+{
+    if (m_timer.isActive())
+        kWarning() << "AutoSaver: still active when destroyed, changes not saved.";
+}
+
+
+void AutoSaver::changeOccurred()
+{
+    if (m_firstChange.isNull())
+        m_firstChange.start();
+
+    if (m_firstChange.elapsed() > MAXWAIT)
+    {
+        saveIfNeccessary();
+    }
+    else
+    {
+        m_timer.start(AUTOSAVE_IN, this);
+    }
+}
+
+
+void AutoSaver::timerEvent(QTimerEvent *event)
+{
+    if (event->timerId() == m_timer.timerId())
+    {
+        saveIfNeccessary();
+    }
+    else
+    {
+        QObject::timerEvent(event);
+    }
+}
+
+
+void AutoSaver::saveIfNeccessary()
+{
+    if (!m_timer.isActive())
+        return;
+    m_timer.stop();
+    m_firstChange = QTime();
+    if (!QMetaObject::invokeMethod(parent(), "save", Qt::DirectConnection))
+    {
+        kWarning() << "AutoSaver: error invoking slot save() on parent";
+    }
+}
+