diff options
Diffstat (limited to 'src/qmlmodels/qqmllistaccessor.cpp')
| -rw-r--r-- | src/qmlmodels/qqmllistaccessor.cpp | 249 |
1 files changed, 179 insertions, 70 deletions
diff --git a/src/qmlmodels/qqmllistaccessor.cpp b/src/qmlmodels/qqmllistaccessor.cpp index 60b91a23c9..acf6a14e02 100644 --- a/src/qmlmodels/qqmllistaccessor.cpp +++ b/src/qmlmodels/qqmllistaccessor.cpp @@ -1,51 +1,14 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtQml module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** 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. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #include "qqmllistaccessor_p.h" #include <private/qqmlmetatype_p.h> -#include <QtCore/qstringlist.h> #include <QtCore/qdebug.h> - -// ### Remove me -#include <private/qqmlengine_p.h> +#include <QtCore/qsequentialiterable.h> +#include <QtCore/qstringlist.h> +#include <QtCore/qurl.h> QT_BEGIN_NAMESPACE @@ -69,17 +32,54 @@ void QQmlListAccessor::setList(const QVariant &v) // An incoming JS array as model is treated as a variant list, so we need to // convert it first with toVariant(). - if (d.userType() == qMetaTypeId<QJSValue>()) + QMetaType variantsType = d.metaType(); + if (variantsType == QMetaType::fromType<QJSValue>()) { d = d.value<QJSValue>().toVariant(); + variantsType = d.metaType(); + } + if (!d.isValid()) { m_type = Invalid; - } else if (d.userType() == QMetaType::QStringList) { + return; + } + + if (variantsType == QMetaType::fromType<QStringList>()) { m_type = StringList; - } else if (d.userType() == QMetaType::QVariantList) { + return; + } + + if (variantsType == QMetaType::fromType<QList<QUrl>>()) { + m_type = UrlList; + return; + } + + if (variantsType == QMetaType::fromType<QVariantList>()) { m_type = VariantList; - } else if (d.userType() == qMetaTypeId<QList<QObject *>>()) { + return; + } + + if (variantsType == QMetaType::fromType<QList<QObject *>>()) { m_type = ObjectList; - } else if (d.canConvert(QMetaType(QMetaType::Int))) { + return; + } + + if (variantsType.flags() & QMetaType::IsQmlList) { + d = QVariant::fromValue(QQmlListReference(d)); + m_type = ListProperty; + return; + } + + if (variantsType == QMetaType::fromType<QQmlListReference>()) { + m_type = ListProperty; + return; + } + + if (variantsType.flags() & QMetaType::PointerToQObject) { + m_type = Instance; + return; + } + + if (int i = 0; [&](){bool ok = false; i = v.toInt(&ok); return ok;}()) { // Here we have to check for an upper limit, because down the line code might (well, will) // allocate memory depending on the number of elements. The upper limit cannot be INT_MAX: // QVector<QPointer<QQuickItem>> something; @@ -90,46 +90,88 @@ void QQmlListAccessor::setList(const QVariant &v) // So, doing an approximate round-down-to-nice-number, we get: const int upperLimit = 100 * 1000 * 1000; - int i = v.toInt(); if (i < 0) { qWarning("Model size of %d is less than 0", i); m_type = Invalid; - } else if (i > upperLimit) { + return; + } + + if (i > upperLimit) { qWarning("Model size of %d is bigger than the upper limit %d", i, upperLimit); m_type = Invalid; - } else { - m_type = Integer; + return; } - } else if (d.metaType().flags().testFlag(QMetaType::PointerToQObject)) { - QObject *data = QQmlMetaType::toQObject(d); - d = QVariant::fromValue(data); - m_type = Instance; - } else if (d.userType() == qMetaTypeId<QQmlListReference>()) { - m_type = ListProperty; - } else { - m_type = Instance; + + m_type = Integer; + d = i; + return; + } + + const QQmlType type = QQmlMetaType::qmlListType(variantsType); + if (type.isSequentialContainer()) { + m_metaSequence = type.listMetaSequence(); + m_type = Sequence; + return; } + + QSequentialIterable iterable; + if (QMetaType::convert( + variantsType, d.constData(), + QMetaType::fromType<QSequentialIterable>(), &iterable)) { + const QMetaSequence sequence = iterable.metaContainer(); + + if (sequence.hasSize() && sequence.canGetValueAtIndex()) { + // If the resulting iterable is useful for anything, use it. + m_metaSequence = sequence; + m_type = Sequence; + return; + } + + if (sequence.hasConstIterator() && sequence.canGetValueAtConstIterator()) { + // As a last resort, try to read the contents of the container via an iterator + // and build a QVariantList from them. + QVariantList variantList; + for (auto it = iterable.constBegin(), end = iterable.constEnd(); it != end; ++it) + variantList.push_back(*it); + d = std::move(variantList); + m_type = VariantList; + return; + } + } + + m_type = Instance; + return; } qsizetype QQmlListAccessor::count() const { switch(m_type) { case StringList: - return qvariant_cast<QStringList>(d).count(); + Q_ASSERT(d.metaType() == QMetaType::fromType<QStringList>()); + return reinterpret_cast<const QStringList *>(d.constData())->size(); + case UrlList: + Q_ASSERT(d.metaType() == QMetaType::fromType<QList<QUrl>>()); + return reinterpret_cast<const QList<QUrl> *>(d.constData())->size(); case VariantList: - return qvariant_cast<QVariantList>(d).count(); + Q_ASSERT(d.metaType() == QMetaType::fromType<QVariantList>()); + return reinterpret_cast<const QVariantList *>(d.constData())->size(); case ObjectList: - return qvariant_cast<QList<QObject *>>(d).count(); + Q_ASSERT(d.metaType() == QMetaType::fromType<QList<QObject *>>()); + return reinterpret_cast<const QList<QObject *> *>(d.constData())->size(); case ListProperty: - return ((const QQmlListReference *)d.constData())->count(); + Q_ASSERT(d.metaType() == QMetaType::fromType<QQmlListReference>()); + return reinterpret_cast<const QQmlListReference *>(d.constData())->count(); + case Sequence: + Q_ASSERT(m_metaSequence != QMetaSequence()); + return m_metaSequence.size(d.constData()); case Instance: return 1; case Integer: - return d.toInt(); - default: + return *reinterpret_cast<const int *>(d.constData()); case Invalid: return 0; } + Q_UNREACHABLE_RETURN(0); } QVariant QQmlListAccessor::at(qsizetype idx) const @@ -137,21 +179,88 @@ QVariant QQmlListAccessor::at(qsizetype idx) const Q_ASSERT(idx >= 0 && idx < count()); switch(m_type) { case StringList: - return QVariant::fromValue(qvariant_cast<QStringList>(d).at(idx)); + Q_ASSERT(d.metaType() == QMetaType::fromType<QStringList>()); + return QVariant::fromValue(reinterpret_cast<const QStringList *>(d.constData())->at(idx)); + case UrlList: + Q_ASSERT(d.metaType() == QMetaType::fromType<QList<QUrl>>()); + return QVariant::fromValue(reinterpret_cast<const QList<QUrl> *>(d.constData())->at(idx)); case VariantList: - return qvariant_cast<QVariantList>(d).at(idx); + Q_ASSERT(d.metaType() == QMetaType::fromType<QVariantList>()); + return reinterpret_cast<const QVariantList *>(d.constData())->at(idx); case ObjectList: - return QVariant::fromValue(qvariant_cast<QList<QObject *>>(d).at(idx)); + Q_ASSERT(d.metaType() == QMetaType::fromType<QList<QObject *>>()); + return QVariant::fromValue(reinterpret_cast<const QList<QObject *> *>(d.constData())->at(idx)); case ListProperty: - return QVariant::fromValue(((const QQmlListReference *)d.constData())->at(idx)); + Q_ASSERT(d.metaType() == QMetaType::fromType<QQmlListReference>()); + return QVariant::fromValue(reinterpret_cast<const QQmlListReference *>(d.constData())->at(idx)); + case Sequence: { + Q_ASSERT(m_metaSequence != QMetaSequence()); + QVariant result; + const QMetaType valueMetaType = m_metaSequence.valueMetaType(); + if (valueMetaType == QMetaType::fromType<QVariant>()) { + m_metaSequence.valueAtIndex(d.constData(), idx, &result); + } else { + result = QVariant(valueMetaType); + m_metaSequence.valueAtIndex(d.constData(), idx, result.data()); + } + return result; + } case Instance: return d; case Integer: return QVariant(idx); - default: case Invalid: return QVariant(); } + Q_UNREACHABLE_RETURN(QVariant()); +} + +void QQmlListAccessor::set(qsizetype idx, const QVariant &value) +{ + Q_ASSERT(idx >= 0 && idx < count()); + switch (m_type) { + case StringList: + Q_ASSERT(d.metaType() == QMetaType::fromType<QStringList>()); + (*static_cast<QStringList *>(d.data()))[idx] = value.toString(); + break; + case UrlList: + Q_ASSERT(d.metaType() == QMetaType::fromType<QList<QUrl>>()); + (*static_cast<QList<QUrl> *>(d.data()))[idx] = value.value<QUrl>(); + break; + case VariantList: + Q_ASSERT(d.metaType() == QMetaType::fromType<QVariantList>()); + (*static_cast<QVariantList *>(d.data()))[idx] = value; + break; + case ObjectList: + Q_ASSERT(d.metaType() == QMetaType::fromType<QList<QObject *>>()); + (*static_cast<QList<QObject *> *>(d.data()))[idx] = value.value<QObject *>(); + break; + case ListProperty: + Q_ASSERT(d.metaType() == QMetaType::fromType<QQmlListReference>()); + static_cast<QQmlListReference *>(d.data())->replace(idx, value.value<QObject *>()); + break; + case Sequence: { + Q_ASSERT(m_metaSequence != QMetaSequence()); + const QMetaType valueMetaType = m_metaSequence.valueMetaType(); + if (valueMetaType == QMetaType::fromType<QVariant>()) { + m_metaSequence.setValueAtIndex(d.data(), idx, &value); + } else if (valueMetaType == value.metaType()) { + m_metaSequence.setValueAtIndex(d.data(), idx, value.constData()); + } else { + QVariant converted = value; + converted.convert(valueMetaType); + m_metaSequence.setValueAtIndex(d.data(), idx, converted.constData()); + } + break; + } + case Instance: + d = value; + break; + case Integer: + break;; + case Invalid: + break; + } } bool QQmlListAccessor::isValid() const |