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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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
** Alternatively, 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 have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui>
#include "echowindow.h"
//! [0]
EchoWindow::EchoWindow()
{
createGUI();
setLayout(layout);
setWindowTitle("Echo Plugin Example");
if (!loadPlugin()) {
QMessageBox::information(this, "Error", "Could not load the plugin");
lineEdit->setEnabled(false);
button->setEnabled(false);
}
}
//! [0]
//! [1]
void EchoWindow::sendEcho()
{
QString text = echoInterface->echo(lineEdit->text());
label->setText(text);
}
//! [1]
//! [2]
void EchoWindow::createGUI()
{
lineEdit = new QLineEdit;
label = new QLabel;
label->setFrameStyle(QFrame::Box | QFrame::Plain);
button = new QPushButton(tr("Send Message"));
connect(lineEdit, SIGNAL(editingFinished()),
this, SLOT(sendEcho()));
connect(button, SIGNAL(clicked()),
this, SLOT(sendEcho()));
layout = new QGridLayout;
layout->addWidget(new QLabel(tr("Message:")), 0, 0);
layout->addWidget(lineEdit, 0, 1);
layout->addWidget(new QLabel(tr("Answer:")), 1, 0);
layout->addWidget(label, 1, 1);
layout->addWidget(button, 2, 1, Qt::AlignRight);
layout->setSizeConstraint(QLayout::SetFixedSize);
}
//! [2]
//! [3]
bool EchoWindow::loadPlugin()
{
QDir pluginsDir(qApp->applicationDirPath());
#if defined(Q_OS_WIN)
if (pluginsDir.dirName().toLower() == "debug" || pluginsDir.dirName().toLower() == "release")
pluginsDir.cdUp();
#elif defined(Q_OS_MAC)
if (pluginsDir.dirName() == "MacOS") {
pluginsDir.cdUp();
pluginsDir.cdUp();
pluginsDir.cdUp();
}
#endif
pluginsDir.cd("plugins");
foreach (QString fileName, pluginsDir.entryList(QDir::Files)) {
QPluginLoader pluginLoader(pluginsDir.absoluteFilePath(fileName));
QObject *plugin = pluginLoader.instance();
if (plugin) {
echoInterface = qobject_cast<EchoInterface *>(plugin);
if (echoInterface)
return true;
}
}
return false;
}
//! [3]
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