/****************************************************************************
**
** 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 "chat.h"
#include <QtGui/QApplication>
#include <QtGui/QMessageBox>

#include "chat_adaptor.h"
#include "chat_interface.h"

ChatMainWindow::ChatMainWindow()
    : m_nickname(QLatin1String("nickname"))
{
    setupUi(this);
    sendButton->setEnabled(false);

    connect(messageLineEdit, SIGNAL(textChanged(QString)),
            this, SLOT(textChangedSlot(QString)));
    connect(sendButton, SIGNAL(clicked(bool)), this, SLOT(sendClickedSlot()));
    connect(actionChangeNickname, SIGNAL(triggered(bool)), this, SLOT(changeNickname()));
    connect(actionAboutQt, SIGNAL(triggered(bool)), this, SLOT(aboutQt()));
    connect(qApp, SIGNAL(lastWindowClosed()), this, SLOT(exiting()));

    // add our D-Bus interface and connect to D-Bus
    new ChatAdaptor(this);
    QDBusConnection::sessionBus().registerObject("/", this);

    com::trolltech::chat *iface;
    iface = new com::trolltech::chat(QString(), QString(), QDBusConnection::sessionBus(), this);
    //connect(iface, SIGNAL(message(QString,QString)), this, SLOT(messageSlot(QString,QString)));
    QDBusConnection::sessionBus().connect(QString(), QString(), "com.trolltech.chat", "message", this, SLOT(messageSlot(QString,QString)));
    connect(iface, SIGNAL(action(QString,QString)), this, SLOT(actionSlot(QString,QString)));

    NicknameDialog dialog;
    dialog.cancelButton->setVisible(false);
    dialog.exec();
    m_nickname = dialog.nickname->text().trimmed();
    emit action(m_nickname, QLatin1String("joins the chat"));
}

ChatMainWindow::~ChatMainWindow()
{
}

void ChatMainWindow::rebuildHistory()
{
    QString history = m_messages.join( QLatin1String("\n" ) );
    chatHistory->setPlainText(history);
}

void ChatMainWindow::messageSlot(const QString &nickname, const QString &text)
{
    QString msg( QLatin1String("<%1> %2") );
    msg = msg.arg(nickname, text);
    m_messages.append(msg);

    if (m_messages.count() > 100)
        m_messages.removeFirst();
    rebuildHistory();
}

void ChatMainWindow::actionSlot(const QString &nickname, const QString &text)
{
    QString msg( QLatin1String("* %1 %2") );
    msg = msg.arg(nickname, text);
    m_messages.append(msg);

    if (m_messages.count() > 100)
        m_messages.removeFirst();
    rebuildHistory();
}

void ChatMainWindow::textChangedSlot(const QString &newText)
{
    sendButton->setEnabled(!newText.isEmpty());
}

void ChatMainWindow::sendClickedSlot()
{
    //emit message(m_nickname, messageLineEdit->text());
    QDBusMessage msg = QDBusMessage::createSignal("/", "com.trolltech.chat", "message");
    msg << m_nickname << messageLineEdit->text();
    QDBusConnection::sessionBus().send(msg);
    messageLineEdit->setText(QString());
}

void ChatMainWindow::changeNickname()
{
    NicknameDialog dialog(this);
    if (dialog.exec() == QDialog::Accepted) {
        QString old = m_nickname;
        m_nickname = dialog.nickname->text().trimmed();
        emit action(old, QString("is now known as %1").arg(m_nickname));
    }
}

void ChatMainWindow::aboutQt()
{
    QMessageBox::aboutQt(this);
}

void ChatMainWindow::exiting()
{
    emit action(m_nickname, QLatin1String("leaves the chat"));
}

NicknameDialog::NicknameDialog(QWidget *parent)
    : QDialog(parent)
{
    setupUi(this);
}

int main(int argc, char **argv)
{
    QApplication app(argc, argv);

    if (!QDBusConnection::sessionBus().isConnected()) {
        qWarning("Cannot connect to the D-Bus session bus.\n"
                 "Please check your system settings and try again.\n");
        return 1;
    }

    ChatMainWindow chat;
    chat.show();
    return app.exec();
}
