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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** 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 "chatdialog.h"
ChatDialog::ChatDialog(QWidget *parent)
: QDialog(parent)
{
setupUi(this);
lineEdit->setFocusPolicy(Qt::StrongFocus);
textEdit->setFocusPolicy(Qt::NoFocus);
textEdit->setReadOnly(true);
listWidget->setFocusPolicy(Qt::NoFocus);
connect(lineEdit, SIGNAL(returnPressed()), this, SLOT(returnPressed()));
connect(&client, SIGNAL(newMessage(const QString &, const QString &)),
this, SLOT(appendMessage(const QString &, const QString &)));
connect(&client, SIGNAL(newParticipant(const QString &)),
this, SLOT(newParticipant(const QString &)));
connect(&client, SIGNAL(participantLeft(const QString &)),
this, SLOT(participantLeft(const QString &)));
myNickName = client.nickName();
newParticipant(myNickName);
tableFormat.setBorder(0);
QTimer::singleShot(10 * 1000, this, SLOT(showInformation()));
}
void ChatDialog::appendMessage(const QString &from, const QString &message)
{
if (from.isEmpty() || message.isEmpty())
return;
QTextCursor cursor(textEdit->textCursor());
cursor.movePosition(QTextCursor::End);
QTextTable *table = cursor.insertTable(1, 2, tableFormat);
table->cellAt(0, 0).firstCursorPosition().insertText("<" + from + "> ");
table->cellAt(0, 1).firstCursorPosition().insertText(message);
QScrollBar *bar = textEdit->verticalScrollBar();
bar->setValue(bar->maximum());
}
void ChatDialog::returnPressed()
{
QString text = lineEdit->text();
if (text.isEmpty())
return;
if (text.startsWith(QChar('/'))) {
QColor color = textEdit->textColor();
textEdit->setTextColor(Qt::red);
textEdit->append(tr("! Unknown command: %1")
.arg(text.left(text.indexOf(' '))));
textEdit->setTextColor(color);
} else {
client.sendMessage(text);
appendMessage(myNickName, text);
}
lineEdit->clear();
}
void ChatDialog::newParticipant(const QString &nick)
{
if (nick.isEmpty())
return;
QColor color = textEdit->textColor();
textEdit->setTextColor(Qt::gray);
textEdit->append(tr("* %1 has joined").arg(nick));
textEdit->setTextColor(color);
listWidget->addItem(nick);
}
void ChatDialog::participantLeft(const QString &nick)
{
if (nick.isEmpty())
return;
QList<QListWidgetItem *> items = listWidget->findItems(nick,
Qt::MatchExactly);
if (items.isEmpty())
return;
delete items.at(0);
QColor color = textEdit->textColor();
textEdit->setTextColor(Qt::gray);
textEdit->append(tr("* %1 has left").arg(nick));
textEdit->setTextColor(color);
}
void ChatDialog::showInformation()
{
if (listWidget->count() == 1) {
QMessageBox::information(this, tr("Chat"),
tr("Launch several instances of this "
"program on your local network and "
"start chatting!"));
}
}
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