742e79312f
Use lambdas instead of slots where practical. Consistently use signals to transmit D-Bus messages. Extract a local variable for the used D-Bus connection. Task-number: QTBUG-111366 Pick-to: 6.5 Change-Id: Icc6667e1392ada1b7d3b33c4e4b32917dd648390 Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
92 lines
2.7 KiB
C++
92 lines
2.7 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include <QApplication>
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#include <QInputDialog>
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#include <QMessageBox>
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#include "chat.h"
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#include "chat_adaptor.h"
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#include "chat_interface.h"
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ChatMainWindow::ChatMainWindow()
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{
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setupUi(this);
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connect(messageLineEdit, &QLineEdit::textChanged, this,
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[this](const QString &newText) { sendButton->setEnabled(!newText.isEmpty()); });
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connect(sendButton, &QPushButton::clicked, this, [this]() {
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emit message(m_nickname, messageLineEdit->text());
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messageLineEdit->clear();
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});
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connect(actionChangeNickname, &QAction::triggered,
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this, &ChatMainWindow::changeNickname);
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connect(actionAboutQt, &QAction::triggered, this, [this]() { QMessageBox::aboutQt(this); });
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connect(qApp, &QApplication::lastWindowClosed, this,
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[this]() { emit action(m_nickname, tr("leaves the chat")); });
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// add our D-Bus interface and connect to D-Bus
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new ChatAdaptor(this);
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auto connection = QDBusConnection::sessionBus();
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connection.registerObject("/", this);
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using org::example::chat;
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auto *iface = new chat({}, {}, connection, this);
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connect(iface, &chat::message, this, [this](const QString &nickname, const QString &text) {
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displayMessage(tr("<%1> %2").arg(nickname, text));
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});
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connect(iface, &chat::action, this, [this](const QString &nickname, const QString &text) {
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displayMessage(tr("* %1 %2").arg(nickname, text));
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});
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if (!changeNickname(true))
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QMetaObject::invokeMethod(qApp, &QApplication::quit, Qt::QueuedConnection);
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}
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void ChatMainWindow::displayMessage(const QString &message)
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{
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m_messages.append(message);
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if (m_messages.count() > 100)
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m_messages.removeFirst();
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auto history = m_messages.join(QLatin1String("\n"));
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chatHistory->setPlainText(history);
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}
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bool ChatMainWindow::changeNickname(bool initial)
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{
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auto newNickname = QInputDialog::getText(this, tr("Set nickname"), tr("New nickname:"));
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newNickname = newNickname.trimmed();
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if (!newNickname.isEmpty()) {
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auto old = m_nickname;
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m_nickname = newNickname;
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if (initial)
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emit action(m_nickname, tr("joins the chat"));
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else
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emit action(old, tr("is now known as %1").arg(m_nickname));
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return true;
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}
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return false;
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}
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int main(int argc, char **argv)
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{
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QApplication app(argc, argv);
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if (!QDBusConnection::sessionBus().isConnected()) {
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qWarning("Cannot connect to the D-Bus session bus.\n"
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"Please check your system settings and try again.\n");
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return 1;
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}
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ChatMainWindow chat;
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chat.show();
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return app.exec();
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}
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