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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ #include "qitemmodelscatterdataproxy_p.h"
++ #include "scatteritemmodelhandler_p.h"
++
++ QT_BEGIN_NAMESPACE
++
++ /*!
++ * \class QItemModelScatterDataProxy
++ * \inmodule QtDataVisualization
++ * \brief Proxy class for presenting data in item models with Q3DScatter.
++ * \since QtDataVisualization 1.0
++ *
++ * QItemModelScatterDataProxy allows you to use QAbstractItemModel derived models as a data source
++ * for Q3DScatter. It maps roles of QAbstractItemModel to the XYZ-values of Q3DScatter points.
++ *
++ * The data is resolved asynchronously whenever the mapping or the model changes.
++ * QScatterDataProxy::arrayReset() is emitted when the data has been resolved. However, inserts,
++ * removes, and single data item changes after the model initialization are resolved synchronously,
++ * unless the same frame also contains a change that causes the whole model to be resolved.
++ *
++ * Mapping ignores rows and columns of the QAbstractItemModel and treats
++ * all items equally. It requires the model to provide roles for the data items
++ * that can be mapped to X, Y, and Z-values for the scatter points.
++ *
++ * For example, assume that you have a custom QAbstractItemModel for storing various measurements
++ * done on material samples, providing data for roles such as "density", "hardness", and
++ * "conductivity". You could visualize these properties on a scatter graph using this proxy:
++ *
++ * \snippet doc_src_qtdatavisualization.cpp 4
++ *
++ * If the fields of the model do not contain the data in the exact format you need, you can specify
++ * a search pattern regular expression and a replace rule for each role to get the value in a
++ * format you need. For more information how the replace using regular expressions works, see
++ * QString::replace(const QRegularExpression &rx, const QString &after) function documentation. Note that
++ * using regular expressions has an impact on the performance, so it's more efficient to utilize
++ * item models where doing search and replace is not necessary to get the desired values.
++ *
++ * For example about using the search patterns in conjunction with the roles, see
++ * ItemModelBarDataProxy usage in \l{Simple Bar Graph} example.
++ *
++ * \sa {Qt Data Visualization Data Handling}
++ */
++
++ /*!
++ * \qmltype ItemModelScatterDataProxy
++ * \inqmlmodule QtDataVisualization
++ * \since QtDataVisualization 1.0
++ * \ingroup datavisualization_qml
++ * \nativetype QItemModelScatterDataProxy
++ * \inherits ScatterDataProxy
++ * \brief Proxy class for presenting data in item models with Scatter3D.
++ *
++ * This type allows you to use AbstractItemModel derived models as a data source for Scatter3D.
++ *
++ * The data is resolved asynchronously whenever the mapping or the model changes.
++ * QScatterDataProxy::arrayReset() is emitted when the data has been resolved.
++ *
++ * For more details, see QItemModelScatterDataProxy documentation.
++ *
++ * Usage example:
++ *
++ * \snippet doc_src_qmldatavisualization.cpp 8
++ *
++ * \sa ScatterDataProxy, {Qt Data Visualization Data Handling}
++ */
++
++ /*!
++ * \qmlproperty model ItemModelScatterDataProxy::itemModel
++ * The item model to use as a data source for Scatter3D.
++ */
++
++ /*!
++ * \qmlproperty string ItemModelScatterDataProxy::xPosRole
++ * The item model role to map into the X position.
++ */
++
++ /*!
++ * \qmlproperty string ItemModelScatterDataProxy::yPosRole
++ * The item model role to map into the Y position.
++ */
++
++ /*!
++ * \qmlproperty string ItemModelScatterDataProxy::zPosRole
++ * The item model role to map into the Z position.
++ */
++
++ /*!
++ * \qmlproperty string ItemModelScatterDataProxy::rotationRole
++ *
++ * The item model role to map into item rotation.
++ * The model may supply the value for rotation as either variant that is directly convertible
++ * to \l quaternion, or as one of the string representations: \c{"scalar,x,y,z"} or
++ * \c{"@angle,x,y,z"}. The first format will construct the \l quaternion directly with given values,
++ * and the second one will construct the \l quaternion using QQuaternion::fromAxisAndAngle() method.
++ */
++
++ /*!
++ * \qmlproperty regExp ItemModelScatterDataProxy::xPosRolePattern
++ *
++ * When set, a search and replace is done on the value mapped by the x position
++ * role before it is used as
++ * an item position value. This property specifies the regular expression to find the portion of the
++ * mapped value to replace and xPosRoleReplace property contains the replacement string.
++ *
++ * \sa xPosRole, xPosRoleReplace
++ */
++
++ /*!
++ * \qmlproperty regExp ItemModelScatterDataProxy::yPosRolePattern
++ *
++ * When set, a search and replace is done on the value mapped by the y position
++ * role before it is used as
++ * an item position value. This property specifies the regular expression to find the portion of the
++ * mapped value to replace and yPosRoleReplace property contains the replacement string.
++ *
++ * \sa yPosRole, yPosRoleReplace
++ */
++
++ /*!
++ * \qmlproperty regExp ItemModelScatterDataProxy::zPosRolePattern
++ *
++ * When set, a search and replace is done on the value mapped by the z position
++ * role before it is used as
++ * an item position value. This property specifies the regular expression to find the portion of the
++ * mapped value to replace and zPosRoleReplace property contains the replacement string.
++ *
++ * \sa zPosRole, zPosRoleReplace
++ */
++
++ /*!
++ * \qmlproperty regExp ItemModelScatterDataProxy::rotationRolePattern
++ * When set, a search and replace is done on the value mapped by the rotation
++ * role before it is used
++ * as item rotation. This property specifies the regular expression to find the portion
++ * of the mapped value to replace and rotationRoleReplace property contains the replacement string.
++ *
++ * \sa rotationRole, rotationRoleReplace
++ */
++
++ /*!
++ * \qmlproperty string ItemModelScatterDataProxy::xPosRoleReplace
++ *
++ * This property defines the replace content to be used in conjunction with xPosRolePattern.
++ * Defaults to an empty string. For more information on how the search and replace using regular
++ * expressions works, see QString::replace(const QRegularExpression &rx, const QString &after)
++ * function documentation.
++ *
++ * \sa xPosRole, xPosRolePattern
++ */
++
++ /*!
++ * \qmlproperty string ItemModelScatterDataProxy::yPosRoleReplace
++ *
++ * This property defines the replace content to be used in conjunction with yPosRolePattern.
++ * Defaults to an empty string. For more information on how the search and replace using regular
++ * expressions works, see QString::replace(const QRegularExpression &rx, const QString &after)
++ * function documentation.
++ *
++ * \sa yPosRole, yPosRolePattern
++ */
++
++ /*!
++ * \qmlproperty string ItemModelScatterDataProxy::zPosRoleReplace
++ *
++ * This property defines the replace content to be used in conjunction with zPosRolePattern.
++ * Defaults to an empty string. For more information on how the search and replace using regular
++ * expressions works, see QString::replace(const QRegularExpression &rx, const QString &after)
++ * function documentation.
++ *
++ * \sa zPosRole, zPosRolePattern
++ */
++
++ /*!
++ * \qmlproperty string ItemModelScatterDataProxy::rotationRoleReplace
++ * This property defines the replace content to be used in conjunction with rotationRolePattern.
++ * Defaults to an empty string. For more information on how the search and replace using regular
++ * expressions works, see QString::replace(const QRegularExpression &rx, const QString &after)
++ * function documentation.
++ *
++ * \sa rotationRole, rotationRolePattern
++ */
++
++ /*!
++ * Constructs QItemModelScatterDataProxy with optional \a parent.
++ */
++ QItemModelScatterDataProxy::QItemModelScatterDataProxy(QObject *parent)
++ : QScatterDataProxy(new QItemModelScatterDataProxyPrivate(this), parent)
++ {
++ dptr()->connectItemModelHandler();
++ }
++
++ /*!
++ * Constructs QItemModelScatterDataProxy with \a itemModel and optional \a parent. Proxy doesn't take
++ * ownership of the \a itemModel, as typically item models are owned by other controls.
++ */
++ QItemModelScatterDataProxy::QItemModelScatterDataProxy(QAbstractItemModel *itemModel,
++ QObject *parent)
++ : QScatterDataProxy(new QItemModelScatterDataProxyPrivate(this), parent)
++ {
++ dptr()->m_itemModelHandler->setItemModel(itemModel);
++ dptr()->connectItemModelHandler();
++ }
++
++ /*!
++ * Constructs QItemModelScatterDataProxy with \a itemModel and optional \a parent. Proxy doesn't take
++ * ownership of the \a itemModel, as typically item models are owned by other controls.
++ * The xPosRole property is set to \a xPosRole, yPosRole property to \a yPosRole, and zPosRole property
++ * to \a zPosRole.
++ */
++ QItemModelScatterDataProxy::QItemModelScatterDataProxy(QAbstractItemModel *itemModel,
++ const QString &xPosRole,
++ const QString &yPosRole,
++ const QString &zPosRole,
++ QObject *parent)
++ : QScatterDataProxy(new QItemModelScatterDataProxyPrivate(this), parent)
++ {
++ dptr()->m_itemModelHandler->setItemModel(itemModel);
++ dptr()->m_xPosRole = xPosRole;
++ dptr()->m_yPosRole = yPosRole;
++ dptr()->m_zPosRole = zPosRole;
++ dptr()->connectItemModelHandler();
++ }
++
++ /*!
++ * Constructs QItemModelScatterDataProxy with \a itemModel and optional \a parent. Proxy doesn't take
++ * ownership of the \a itemModel, as typically item models are owned by other controls.
++ * The xPosRole property is set to \a xPosRole, yPosRole property to \a yPosRole, zPosRole property
++ * to \a zPosRole, and rotationRole property to \a rotationRole.
++ */
++ QItemModelScatterDataProxy::QItemModelScatterDataProxy(QAbstractItemModel *itemModel,
++ const QString &xPosRole,
++ const QString &yPosRole,
++ const QString &zPosRole,
++ const QString &rotationRole,
++ QObject *parent)
++ : QScatterDataProxy(new QItemModelScatterDataProxyPrivate(this), parent)
++ {
++ dptr()->m_itemModelHandler->setItemModel(itemModel);
++ dptr()->m_xPosRole = xPosRole;
++ dptr()->m_yPosRole = yPosRole;
++ dptr()->m_zPosRole = zPosRole;
++ dptr()->m_rotationRole = rotationRole;
++ dptr()->connectItemModelHandler();
++ }
++
++ /*!
++ * Destroys QItemModelScatterDataProxy.
++ */
++ QItemModelScatterDataProxy::~QItemModelScatterDataProxy()
++ {
++ }
++
++ /*!
++ * \property QItemModelScatterDataProxy::itemModel
++ *
++ * \brief The item model to use as a data source for a 3D scatter series.
++ */
++
++ /*!
++ * Sets \a itemModel as the item model for Q3DScatter. Does not take
++ * ownership of the model, but does connect to it to listen for changes.
++ */
++ void QItemModelScatterDataProxy::setItemModel(QAbstractItemModel *itemModel)
++ {
++ dptr()->m_itemModelHandler->setItemModel(itemModel);
++ }
++
++ QAbstractItemModel *QItemModelScatterDataProxy::itemModel() const
++ {
++ return dptrc()->m_itemModelHandler->itemModel();
++ }
++
++ /*!
++ * \property QItemModelScatterDataProxy::xPosRole
++ *
++ * \brief The item model role to map into the X position.
++ */
++ void QItemModelScatterDataProxy::setXPosRole(const QString &role)
++ {
++ if (dptr()->m_xPosRole != role) {
++ dptr()->m_xPosRole = role;
++ emit xPosRoleChanged(role);
++ }
++ }
++
++ QString QItemModelScatterDataProxy::xPosRole() const
++ {
++ return dptrc()->m_xPosRole;
++ }
++
++ /*!
++ * \property QItemModelScatterDataProxy::yPosRole
++ *
++ * \brief The item model role to map into the Y position.
++ */
++ void QItemModelScatterDataProxy::setYPosRole(const QString &role)
++ {
++ if (dptr()->m_yPosRole != role) {
++ dptr()->m_yPosRole = role;
++ emit yPosRoleChanged(role);
++ }
++ }
++
++ QString QItemModelScatterDataProxy::yPosRole() const
++ {
++ return dptrc()->m_yPosRole;
++ }
++
++ /*!
++ * \property QItemModelScatterDataProxy::zPosRole
++ *
++ * \brief The item model role to map into the Z position.
++ */
++ void QItemModelScatterDataProxy::setZPosRole(const QString &role)
++ {
++ if (dptr()->m_zPosRole != role) {
++ dptr()->m_zPosRole = role;
++ emit zPosRoleChanged(role);
++ }
++ }
++
++ QString QItemModelScatterDataProxy::zPosRole() const
++ {
++ return dptrc()->m_zPosRole;
++ }
++
++ /*!
++ * \property QItemModelScatterDataProxy::rotationRole
++ *
++ * \brief The item model role to map into item rotation.
++ *
++ * The model may supply the value for rotation as either variant that is directly convertible
++ * to QQuaternion, or as one of the string representations: \c{"scalar,x,y,z"} or \c{"@angle,x,y,z"}.
++ * The first will construct the quaternion directly with given values, and the second one will
++ * construct the quaternion using QQuaternion::fromAxisAndAngle() method.
++ */
++ void QItemModelScatterDataProxy::setRotationRole(const QString &role)
++ {
++ if (dptr()->m_rotationRole != role) {
++ dptr()->m_rotationRole = role;
++ emit rotationRoleChanged(role);
++ }
++ }
++
++ QString QItemModelScatterDataProxy::rotationRole() const
++ {
++ return dptrc()->m_rotationRole;
++ }
++
++ /*!
++ * \property QItemModelScatterDataProxy::xPosRolePattern
++ *
++ * \brief Whether search and replace is done on the value mapped by the x
++ * position role before it is used as an item position value.
++ *
++ * This property specifies the regular expression to find the portion of the
++ * mapped value to replace and xPosRoleReplace property contains the replacement string.
++ *
++ * \sa xPosRole, xPosRoleReplace
++ */
++ void QItemModelScatterDataProxy::setXPosRolePattern(const QRegularExpression &pattern)
++ {
++ if (dptr()->m_xPosRolePattern != pattern) {
++ dptr()->m_xPosRolePattern = pattern;
++ emit xPosRolePatternChanged(pattern);
++ }
++ }
++
++ QRegularExpression QItemModelScatterDataProxy::xPosRolePattern() const
++ {
++ return dptrc()->m_xPosRolePattern;
++ }
++
++ /*!
++ * \property QItemModelScatterDataProxy::yPosRolePattern
++ *
++ * \brief Whether a search and replace is done on the value mapped by the
++ * y position role before it is used as an item position value.
++ *
++ * This property specifies the regular expression to find the portion of the
++ * mapped value to replace and yPosRoleReplace property contains the replacement string.
++ *
++ * \sa yPosRole, yPosRoleReplace
++ */
++ void QItemModelScatterDataProxy::setYPosRolePattern(const QRegularExpression &pattern)
++ {
++ if (dptr()->m_yPosRolePattern != pattern) {
++ dptr()->m_yPosRolePattern = pattern;
++ emit yPosRolePatternChanged(pattern);
++ }
++ }
++
++ QRegularExpression QItemModelScatterDataProxy::yPosRolePattern() const
++ {
++ return dptrc()->m_yPosRolePattern;
++ }
++
++ /*!
++ * \property QItemModelScatterDataProxy::zPosRolePattern
++ *
++ * \brief Whether a search and replace is done on the value mapped by the z
++ * position role before it is used as an item position value.
++ *
++ * This property specifies the regular expression to find the portion of the
++ * mapped value to replace and zPosRoleReplace property contains the replacement string.
++ *
++ * \sa zPosRole, zPosRoleReplace
++ */
++ void QItemModelScatterDataProxy::setZPosRolePattern(const QRegularExpression &pattern)
++ {
++ if (dptr()->m_zPosRolePattern != pattern) {
++ dptr()->m_zPosRolePattern = pattern;
++ emit zPosRolePatternChanged(pattern);
++ }
++ }
++
++ QRegularExpression QItemModelScatterDataProxy::zPosRolePattern() const
++ {
++ return dptrc()->m_zPosRolePattern;
++ }
++
++ /*!
++ * \property QItemModelScatterDataProxy::rotationRolePattern
++ *
++ * \brief Whether a search and replace is done on the value mapped by the
++ * rotation role before it is used as item rotation.
++ *
++ * This property specifies the regular expression to find the portion
++ * of the mapped value to replace and rotationRoleReplace property contains the replacement string.
++ *
++ * \sa rotationRole, rotationRoleReplace
++ */
++ void QItemModelScatterDataProxy::setRotationRolePattern(const QRegularExpression &pattern)
++ {
++ if (dptr()->m_rotationRolePattern != pattern) {
++ dptr()->m_rotationRolePattern = pattern;
++ emit rotationRolePatternChanged(pattern);
++ }
++ }
++
++ QRegularExpression QItemModelScatterDataProxy::rotationRolePattern() const
++ {
++ return dptrc()->m_rotationRolePattern;
++ }
++
++ /*!
++ * \property QItemModelScatterDataProxy::xPosRoleReplace
++ *
++ * \brief The replace content to be used in conjunction with the x position role
++ * pattern.
++ *
++ * Defaults to an empty string. For more information on how the search and replace using regular
++ * expressions works, see QString::replace(const QRegularExpression &rx, const QString &after)
++ * function documentation.
++ *
++ * \sa xPosRole, xPosRolePattern
++ */
++ void QItemModelScatterDataProxy::setXPosRoleReplace(const QString &replace)
++ {
++ if (dptr()->m_xPosRoleReplace != replace) {
++ dptr()->m_xPosRoleReplace = replace;
++ emit xPosRoleReplaceChanged(replace);
++ }
++ }
++
++ QString QItemModelScatterDataProxy::xPosRoleReplace() const
++ {
++ return dptrc()->m_xPosRoleReplace;
++ }
++
++ /*!
++ * \property QItemModelScatterDataProxy::yPosRoleReplace
++ *
++ * \brief The replace content to be used in conjunction with the y position role
++ * pattern.
++ *
++ * Defaults to an empty string. For more information on how the search and replace using regular
++ * expressions works, see QString::replace(const QRegularExpression &rx, const QString &after)
++ * function documentation.
++ *
++ * \sa yPosRole, yPosRolePattern
++ */
++ void QItemModelScatterDataProxy::setYPosRoleReplace(const QString &replace)
++ {
++ if (dptr()->m_yPosRoleReplace != replace) {
++ dptr()->m_yPosRoleReplace = replace;
++ emit yPosRoleReplaceChanged(replace);
++ }
++ }
++
++ QString QItemModelScatterDataProxy::yPosRoleReplace() const
++ {
++ return dptrc()->m_yPosRoleReplace;
++ }
++
++ /*!
++ * \property QItemModelScatterDataProxy::zPosRoleReplace
++ *
++ * \brief The replace content to be used in conjunction with the z position role
++ * pattern.
++ *
++ * Defaults to an empty string. For more information on how the search and replace using regular
++ * expressions works, see QString::replace(const QRegularExpression &rx, const QString &after)
++ * function documentation.
++ *
++ * \sa zPosRole, zPosRolePattern
++ */
++ void QItemModelScatterDataProxy::setZPosRoleReplace(const QString &replace)
++ {
++ if (dptr()->m_zPosRoleReplace != replace) {
++ dptr()->m_zPosRoleReplace = replace;
++ emit zPosRoleReplaceChanged(replace);
++ }
++ }
++
++ QString QItemModelScatterDataProxy::zPosRoleReplace() const
++ {
++ return dptrc()->m_zPosRoleReplace;
++ }
++
++ /*!
++ * \property QItemModelScatterDataProxy::rotationRoleReplace
++ *
++ * \brief The replace content to be used in conjunction with the rotation role
++ * pattern.
++ *
++ * Defaults to an empty string. For more information on how the search and replace using regular
++ * expressions works, see QString::replace(const QRegularExpression &rx, const QString &after)
++ * function documentation.
++ *
++ * \sa rotationRole, rotationRolePattern
++ */
++ void QItemModelScatterDataProxy::setRotationRoleReplace(const QString &replace)
++ {
++ if (dptr()->m_rotationRoleReplace != replace) {
++ dptr()->m_rotationRoleReplace = replace;
++ emit rotationRoleReplaceChanged(replace);
++ }
++ }
++
++ QString QItemModelScatterDataProxy::rotationRoleReplace() const
++ {
++ return dptrc()->m_rotationRoleReplace;
++ }
++
++ /*!
++ * Changes \a xPosRole, \a yPosRole, \a zPosRole, and \a rotationRole mapping.
++ */
++ void QItemModelScatterDataProxy::remap(const QString &xPosRole, const QString &yPosRole,
++ const QString &zPosRole, const QString &rotationRole)
++ {
++ setXPosRole(xPosRole);
++ setYPosRole(yPosRole);
++ setZPosRole(zPosRole);
++ setRotationRole(rotationRole);
++ }
++
++ /*!
++ * \internal
++ */
++ QItemModelScatterDataProxyPrivate *QItemModelScatterDataProxy::dptr()
++ {
++ return static_cast<QItemModelScatterDataProxyPrivate *>(d_ptr.data());
++ }
++
++ /*!
++ * \internal
++ */
++ const QItemModelScatterDataProxyPrivate *QItemModelScatterDataProxy::dptrc() const
++ {
++ return static_cast<const QItemModelScatterDataProxyPrivate *>(d_ptr.data());
++ }
++
++ // QItemModelScatterDataProxyPrivate
++
++ QItemModelScatterDataProxyPrivate::QItemModelScatterDataProxyPrivate(QItemModelScatterDataProxy *q)
++ : QScatterDataProxyPrivate(q),
++ m_itemModelHandler(new ScatterItemModelHandler(q))
++ {
++ }
++
++ QItemModelScatterDataProxyPrivate::~QItemModelScatterDataProxyPrivate()
++ {
++ delete m_itemModelHandler;
++ }
++
++ QItemModelScatterDataProxy *QItemModelScatterDataProxyPrivate::qptr()
++ {
++ return static_cast<QItemModelScatterDataProxy *>(q_ptr);
++ }
++
++ void QItemModelScatterDataProxyPrivate::connectItemModelHandler()
++ {
++ QObject::connect(m_itemModelHandler, &ScatterItemModelHandler::itemModelChanged,
++ qptr(), &QItemModelScatterDataProxy::itemModelChanged);
++ QObject::connect(qptr(), &QItemModelScatterDataProxy::xPosRoleChanged,
++ m_itemModelHandler, &AbstractItemModelHandler::handleMappingChanged);
++ QObject::connect(qptr(), &QItemModelScatterDataProxy::yPosRoleChanged,
++ m_itemModelHandler, &AbstractItemModelHandler::handleMappingChanged);
++ QObject::connect(qptr(), &QItemModelScatterDataProxy::zPosRoleChanged,
++ m_itemModelHandler, &AbstractItemModelHandler::handleMappingChanged);
++ QObject::connect(qptr(), &QItemModelScatterDataProxy::rotationRoleChanged,
++ m_itemModelHandler, &AbstractItemModelHandler::handleMappingChanged);
++ QObject::connect(qptr(), &QItemModelScatterDataProxy::xPosRolePatternChanged,
++ m_itemModelHandler, &AbstractItemModelHandler::handleMappingChanged);
++ QObject::connect(qptr(), &QItemModelScatterDataProxy::yPosRolePatternChanged,
++ m_itemModelHandler, &AbstractItemModelHandler::handleMappingChanged);
++ QObject::connect(qptr(), &QItemModelScatterDataProxy::zPosRolePatternChanged,
++ m_itemModelHandler, &AbstractItemModelHandler::handleMappingChanged);
++ QObject::connect(qptr(), &QItemModelScatterDataProxy::rotationRolePatternChanged,
++ m_itemModelHandler, &AbstractItemModelHandler::handleMappingChanged);
++ QObject::connect(qptr(), &QItemModelScatterDataProxy::xPosRoleReplaceChanged,
++ m_itemModelHandler, &AbstractItemModelHandler::handleMappingChanged);
++ QObject::connect(qptr(), &QItemModelScatterDataProxy::yPosRoleReplaceChanged,
++ m_itemModelHandler, &AbstractItemModelHandler::handleMappingChanged);
++ QObject::connect(qptr(), &QItemModelScatterDataProxy::zPosRoleReplaceChanged,
++ m_itemModelHandler, &AbstractItemModelHandler::handleMappingChanged);
++ QObject::connect(qptr(), &QItemModelScatterDataProxy::rotationRoleReplaceChanged,
++ m_itemModelHandler, &AbstractItemModelHandler::handleMappingChanged);
++ }
++
++ QT_END_NAMESPACE