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Diffstat (limited to 'src/corelib/kernel/qproperty_p.h')
-rw-r--r-- | src/corelib/kernel/qproperty_p.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/corelib/kernel/qproperty_p.h b/src/corelib/kernel/qproperty_p.h new file mode 100644 index 0000000000..13cdb311c1 --- /dev/null +++ b/src/corelib/kernel/qproperty_p.h @@ -0,0 +1,117 @@ +/**************************************************************************** +** +** Copyright (C) 2020 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtCore 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QPROPERTY_P_H +#define QPROPERTY_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists for the convenience +// of qapplication_*.cpp, qwidget*.cpp and qfiledialog.cpp. This header +// file may change from version to version without notice, or even be removed. +// +// We mean it. +// + +#include <qglobal.h> +#include <qvarlengtharray.h> + +#include "qproperty.h" + +QT_BEGIN_NAMESPACE + +// This is a helper "namespace" +struct Q_AUTOTEST_EXPORT QPropertyBasePointer +{ + const QtPrivate::QPropertyBase *ptr = nullptr; + + QPropertyBindingPrivate *bindingPtr() const; + + void addObserver(QPropertyObserver *observer); + void setFirstObserver(QPropertyObserver *observer); + QPropertyObserverPointer firstObserver() const; + + int observerCount() const; + + template <typename T> + static QPropertyBasePointer get(QProperty<T> &property) + { + return QPropertyBasePointer{&property.d.priv}; + } +}; + +// This is a helper "namespace" +struct QPropertyObserverPointer +{ + QPropertyObserver *ptr = nullptr; + + void unlink(); + + void setBindingToMarkDirty(QPropertyBindingPrivate *binding); + void setChangeHandler(void (*changeHandler)(QPropertyObserver *, void *)); + + void notify(QPropertyBindingPrivate *triggeringBinding, void *propertyDataPtr); + void observeProperty(QPropertyBasePointer property); + + explicit operator bool() const { return ptr != nullptr; } + + QPropertyObserverPointer nextObserver() const { return {ptr->next.data()}; } +}; + +class QPropertyBindingErrorPrivate : public QSharedData +{ +public: + QPropertyBindingError::Type type = QPropertyBindingError::NoError; + QString description; + QPropertyBindingSourceLocation location; +}; + +struct BindingEvaluationState +{ + BindingEvaluationState(QPropertyBindingPrivate *binding); + ~BindingEvaluationState(); + QPropertyBindingPrivate *binding; + BindingEvaluationState *previousState = nullptr; +}; + +QT_END_NAMESPACE + +#endif // QPROPERTY_P_H |