1 files changed, 89 insertions, 0 deletions
diff --git a/installerbuilder/libinstaller/lazyplaintextedit.cpp b/installerbuilder/libinstaller/lazyplaintextedit.cpp
new file mode 100644
index 000000000..930e05ca8
--- /dev/null
+++ b/installerbuilder/libinstaller/lazyplaintextedit.cpp
@@ -0,0 +1,89 @@
+/**************************************************************************
+**
+** This file is part of Qt SDK**
+**
+** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).*
+**
+** Contact:  Nokia Corporation qt-info@nokia.com**
+**
+** No Commercial Usage
+**
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+**
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this file.
+** Please review the following information to ensure the GNU Lesser General
+** Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception version
+** 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you are unsure which license is appropriate for your use, please contact
+** (qt-info@nokia.com).
+**
+**************************************************************************/
+#include "lazyplaintextedit.h"
+
+#include <QScrollBar>
+
+#define TIMER_TIME 10
+
+LazyPlainTextEdit::LazyPlainTextEdit(QWidget *parent) :
+    QPlainTextEdit(parent), m_timerId(0)
+{
+}
+
+void LazyPlainTextEdit::timerEvent(QTimerEvent *event)
+{
+    if (event->timerId() == m_timerId) {
+        killTimer(m_timerId);
+        m_timerId = 0;
+        m_chachedOutput.chop(1); //removes the last \n
+        appendPlainText(m_chachedOutput);
+        horizontalScrollBar()->setValue( 0 );
+        m_chachedOutput.clear();
+    }
+}
+
+void LazyPlainTextEdit::append(const QString &text)
+{
+    if (m_timerId) {
+        killTimer(m_timerId);
+        m_timerId = 0;
+    }
+    m_chachedOutput.append(text + QLatin1String("\n"));
+    if (isVisible()) {
+        m_timerId = startTimer(TIMER_TIME);
+    }
+}
+
+void LazyPlainTextEdit::clear()
+{
+    if (m_timerId) {
+        killTimer(m_timerId);
+        m_timerId = 0;
+        m_chachedOutput.clear();
+    }
+    QPlainTextEdit::clear();
+}
+
+
+void LazyPlainTextEdit::setVisible ( bool visible )
+{
+    if (m_timerId) {
+        killTimer(m_timerId);
+        m_timerId = 0;
+    }
+    if (visible) {
+        m_timerId = startTimer(TIMER_TIME);
+    }
+    QPlainTextEdit::setVisible(visible);
+}