/****************************************************************************
**
** Copyright (C) 2014 Sze Howe Koh <szehowe.koh@gmail.com>
** Contact: http://www.qt.io/licensing/
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
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** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
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**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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****************************************************************************/

#include <QtWidgets>

class DemoWidget : public QWidget {
    Q_OBJECT

public:
    DemoWidget(QWidget *parent = nullptr);

    void demoImplicitConversion();
    void demoTypeResolution();
    void demoCrossLanguageConnect();
    void demoOverloadConnect();

//! [defaultparams]
public slots:
    void printNumber(int number = 42) {
        qDebug() << "Lucky number" << number;
    }
//! [defaultparams]
};


//! [lambda]
class TextSender : public QWidget {
    Q_OBJECT

    QLineEdit *lineEdit;
    QPushButton *button;

signals:
    void textCompleted(const QString& text) const;

public:
    TextSender(QWidget *parent = nullptr);
};
//! [lambda]


//! [crosslanguage]
class CppGui : public QWidget {
    Q_OBJECT

    QPushButton *button;

signals:
    void cppSignal(const QVariant& sentMsg) const;

public slots:
    void cppSlot(const QString& receivedMsg) const {
        qDebug() << "C++ received:" << receivedMsg;
    }

public:
    CppGui(QWidget *parent = nullptr) : QWidget(parent) {
        button = new QPushButton("Click Me!", this);
        connect(button, &QPushButton::clicked, [=] {
            emit cppSignal("Hello from C++!");
        });
    }
};
//! [crosslanguage]
