Fix and simplify sensor_explorer example

This commit strives to both fix and simplify the application
and bring its intended demonstrative purpose more forward,
consequently hopefully also making the example easier to
understand and maintain.

First, the sensor_explorer example used QQC1 functionalities
which are no longer available in Qt6. The removed elements were
such that the datamodels needed to be redesigned. This commit
changes the example to use bit more standard Qt model-view
approach.

Second, the sensor_explorer application has not worked in years
on Android due to missing QML plugin installation. While this
could be fixed, in the name of simplicity the example is
now a single binary.

Third, the explorer allowed editing of sensor values. While
this could be a feature of the example, it perhaps deviates
from the gist of the example making it more difficult to
understand. Thus the editing was not added as part of the
example rewrite. It can be added later though.

Task-number: QTBUG-92514
Task-number: QTBUG-92505
Task-number: QTBUG-63054
Change-Id: Icd620ea605a87ba74a42cd1309a3c02d05b146ac
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>

1 files changed, 0 insertions, 331 deletions

diff --git a/examples/sensors/sensor_explorer/import/sensoritem.cpp b/examples/sensors/sensor_explorer/import/sensoritem.cpp
deleted file mode 100644
index 40fb847e..00000000
--- a/examples/sensors/sensor_explorer/import/sensoritem.cpp
+++ /dev/null
@@ -1,331 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2017 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the QtSensors module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** 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.
-**   * Redistributions in binary form must reproduce the above copyright
-**     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
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "sensoritem.h"
-#include <QtCore/QDebug>
-#include <QtSensors>
-
-QT_BEGIN_NAMESPACE
-
-/*
-    \class QSensorItem
-    \brief The QSensorItem type provides information about the metadata from a sensors installed on the system.
-*/
-
-/*
-    Construct a QSensorItem object with parent \a parent
-*/
-QSensorItem::QSensorItem(QObject* parent)
-    : QObject(parent)
-    , _qsensor(0)
-{
-}
-
-/*
-    Construct a QSensorItem object with QSensor \a sensor and parent \a parent
-*/
-QSensorItem::QSensorItem(QSensor* sensor, QObject* parent)
-    : QObject(parent)
-    , _qsensor(sensor)
-{
-}
-
-/*
-    Destructor of a QSensorItem
-*/
-QSensorItem::~QSensorItem()
-{
-}
-
-/*
-    \fn QSensorItem::startChanged()
-    Notifies the client if the sensors has changed its start active status
-*/
-
-/*
-    \property QSensorItem::start
-    This property starts or stops the sensor
-*/
-bool QSensorItem::start()
-{
-    return (_qsensor ? _qsensor->isActive() : false);
-}
-
-void QSensorItem::setStart(bool run)
-{
-    if (_qsensor)
-        _qsensor->setActive(run);
-}
-
-/*
-    \property QSensorItem::id
-    Returns the sensor id of the sensor item
-*/
-QString QSensorItem::id()
-{
-    return (_qsensor ? _qsensor->identifier() : QStringLiteral(""));
-}
-
-/*
-    Set the new value \a val to the QPropertyInfo object \a property
-*/
-void QSensorItem::changePropertyValue(QPropertyInfo* property, const QString& val)
-{
-    if (_qsensor && _sensorProperties.contains(property)){
-        if ( _qsensor->setProperty(property->name().toLatin1().constData(), QVariant(val)))
-            updateSensorPropertyValues();
-        else
-            qWarning() << "new property value couldn't be set";
-    }
-}
-
-/*
-    Reading the metadata and activates the sensor.
-*/
-void QSensorItem::select()
-{
-    if (_sensorProperties.isEmpty()) {
-        // Probe the reading using Qt's meta-object facilities
-        //Read properties from reader
-        QSensorReading *reading = _qsensor->reading();
-        const QMetaObject *mo = reading->metaObject();
-        int firstProperty = QSensorReading::staticMetaObject.propertyOffset();
-
-        for (int i = firstProperty; i < mo->propertyCount(); ++i) {
-            QString typeName = QLatin1String(mo->property(i).typeName());
-            int crap = typeName.lastIndexOf("::");
-            if (crap != -1)
-                typeName = typeName.mid(crap + 2);
-
-            QPropertyInfo* pi = new QPropertyInfo(mo->property(i).name()
-                                                  , i
-                                                  , isWriteable(mo->property(i).name())
-                                                  , typeName
-                                                  , "-"
-                                                  , this);
-            _readerProperties.append(pi);
-        }
-
-        //Read properties from sensor
-        const QMetaObject *mo1 = _qsensor->metaObject();
-        firstProperty = QSensorReading::staticMetaObject.propertyOffset();
-
-        for (int i = firstProperty; i < mo1->propertyCount(); ++i) {
-            QString propertyname = mo1->property(i).name();
-            if (ignoreProperty(propertyname))
-                continue;
-
-            QString typeName = QLatin1String(mo1->property(i).typeName());
-            int crap = typeName.lastIndexOf("::");
-            if (crap != -1)
-                typeName = typeName.mid(crap + 2);
-
-            QPropertyInfo* pi = new QPropertyInfo(propertyname
-                                                  , i
-                                                  , isWriteable(propertyname)
-                                                  , typeName
-                                                  , "-"
-                                                  , this);
-            _sensorProperties.append(pi);
-        }
-        updateSensorPropertyValues();
-        connect(_qsensor, SIGNAL(readingChanged()), this, SLOT(sensorReadingChanged()));
-    }
-    connect(_qsensor, SIGNAL(activeChanged()), SIGNAL(startChanged()));
-}
-
-/*
-    Unselect the sensor by stopping the sensor.
-*/
-void QSensorItem::unSelect()
-{
-    _qsensor->stop();
-    disconnect(_qsensor, SIGNAL(activeChanged()), this , SIGNAL(startChanged()));
-}
-
-/*
-    Updates the property values from QSensor
-*/
-void QSensorItem::updateSensorPropertyValues()
-{
-    if (_qsensor){
-        const QMetaObject *mo = _qsensor->metaObject();
-        for (int i = 0; i < _sensorProperties.count(); i++){
-            QVariant val = mo->property(_sensorProperties[i]->index()).read(_qsensor);
-            _sensorProperties[i]->setValue(convertValue(_sensorProperties[i]->typeName(), val));
-        }
-    }
-}
-
-/*
-    \fn QSensorItem::propertiesChanged()
-    Notifies the client if the list of the properties was changed
-*/
-
-/*
-    Updates the property values from the QSensorReader
-*/
-void QSensorItem::sensorReadingChanged()
-{
-    QSensorReading *reading = _qsensor->reading();
-    const QMetaObject *mo = reading->metaObject();
-    for (int i = 0; i < _readerProperties.count(); i++){
-        QVariant val = mo->property(_readerProperties[i]->index()).read(reading);
-        _readerProperties[i]->setValue(convertValue(_readerProperties[i]->typeName(), val));
-    }
-}
-
-/*
-    Returns true if the property with the name \a propertyname should be ignored
-*/
-bool QSensorItem::ignoreProperty(const QString& propertyname)
-{
-    if (propertyname == "reading" ||
-        propertyname == "active" ||
-        propertyname == "identifier" ||
-        propertyname == "connectedToBackend" ||
-        propertyname == "busy")
-        return true;
-
-    return false;
-}
-
-/*
-    Returns true if the property with the name \a propertyname is writeable
-*/
-bool QSensorItem::isWriteable(const QString& propertyname)
-{
-    if (_qsensor){
-        const QMetaObject *mo = _qsensor->metaObject();
-        int propertyindex = mo->indexOfProperty(propertyname.toLocal8Bit().constData());
-        if (propertyindex >= 0){
-            QMetaProperty prop = mo->property(propertyindex);
-            return prop.isWritable();
-        }
-        else {
-            QSensorReading *reading = _qsensor->reading();
-            const QMetaObject *moreader = reading->metaObject();
-            propertyindex = moreader->indexOfProperty(propertyname.toLocal8Bit().constData());
-            if (propertyindex >= 0){
-                QMetaProperty prop = mo->property(propertyindex);
-                return prop.isWritable();
-            }
-        }
-    }
-
-    return false;
-}
-
-/*
-    Convert the variant \a val dependent on the type \a type and returns the converted value as a QString
-*/
-QString QSensorItem::convertValue(const QString& type, const QVariant& val)
-{
-    if (type == "LightLevel"){
-        switch (val.toInt()) {
-            case 1: return "Dark";
-            case 2: return "Twilight";
-            case 3: return "Light";
-            case 4: return "Bright";
-            case 5: return "Sunny";
-            default: return "Undefined";
-        }
-    }
-    else if (type == "Orientation"){
-        switch (val.toInt()) {
-            case 1: return "TopUp";
-            case 2: return "TopDown";
-            case 3: return "LeftUp";
-            case 4: return "RightUp";
-            case 5: return "FaceUp";
-            case 6: return "FaceDown";
-            default: return "Undefined";
-        }
-    }
-    else if (type == "qrangelist"){
-        qrangelist rangelist = val.value<qrangelist>();
-        QStringList ranges;
-        foreach (const qrange &r, rangelist) {
-            if (r.first == r.second)
-                ranges << QString("%1 Hz").arg(r.first);
-            else
-                ranges << QString("%1-%2 Hz").arg(r.first).arg(r.second);
-        }
-        if (ranges.count() > 0)
-            return ranges.join(", ");
-        return "-";
-    }
-    else if (type == "qoutputrangelist") {
-        qoutputrangelist rangelist = val.value<qoutputrangelist>();
-        QStringList ranges;
-        foreach (const qoutputrange &r, rangelist) {
-            ranges << QString("(%1, %2) += %3").arg(r.minimum).arg(r.maximum).arg(r.accuracy);
-        }
-        if (ranges.count() > 0)
-            return ranges.join(", ");
-        return "-";
-    }
-
-    return val.toString();
-}
-
-/*
-    \property QSensorItem::properties
-    Returns a list of all properties from the sensor
-*/
-QQmlListProperty<QPropertyInfo> QSensorItem::properties()
-{
-    _properties.clear();
-    _properties.append(_sensorProperties);
-    _properties.append(_readerProperties);
-    return QQmlListProperty<QPropertyInfo> (this, &_properties);
-}
-
-QT_END_NAMESPACE