diff options
author | Aaron Kennedy <aaron.kennedy@nokia.com> | 2012-03-08 14:25:50 +0100 |
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committer | Qt by Nokia <qt-info@nokia.com> | 2012-03-13 05:13:50 +0100 |
commit | 5013d53d9400f61699f8edb1dc20f06e19a26a3d (patch) | |
tree | 6f6e9284f8843aaa89f2d38aca066170192172bb /src/qml/qml/qqmlabstractbinding_p.h | |
parent | 648c80c4c0759efb6e35fac7acc8daad5aab13e2 (diff) |
Move binding and expression classes to separate files
Change-Id: Ia9c6996a606e140f31681ecd26d93b1b0fdedf02
Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>
Diffstat (limited to 'src/qml/qml/qqmlabstractbinding_p.h')
-rw-r--r-- | src/qml/qml/qqmlabstractbinding_p.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/src/qml/qml/qqmlabstractbinding_p.h b/src/qml/qml/qqmlabstractbinding_p.h new file mode 100644 index 0000000000..d226e177bd --- /dev/null +++ b/src/qml/qml/qqmlabstractbinding_p.h @@ -0,0 +1,131 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the QtQml module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QQMLABSTRACTBINDING_P_H +#define QQMLABSTRACTBINDING_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <QtCore/qsharedpointer.h> +#include <private/qtqmlglobal_p.h> +#include <private/qqmlproperty_p.h> +#include <private/qpointervaluepair_p.h> + +QT_BEGIN_NAMESPACE + +class Q_QML_PRIVATE_EXPORT QQmlAbstractBinding +{ +public: + typedef QWeakPointer<QQmlAbstractBinding> Pointer; + + QQmlAbstractBinding(); + + virtual void destroy(); + + virtual QString expression() const; + + enum Type { PropertyBinding, ValueTypeProxy }; + virtual Type bindingType() const { return PropertyBinding; } + + // Should return the encoded property index for the binding. Should return this value + // even if the binding is not enabled or added to an object. + // Encoding is: coreIndex | (valueTypeIndex << 24) + virtual int propertyIndex() const = 0; + // Should return the object for the binding. Should return this object even if the + // binding is not enabled or added to the object. + virtual QObject *object() const = 0; + + void setEnabled(bool e) { setEnabled(e, QQmlPropertyPrivate::DontRemoveBinding); } + virtual void setEnabled(bool, QQmlPropertyPrivate::WriteFlags) = 0; + + void update() { update(QQmlPropertyPrivate::DontRemoveBinding); } + virtual void update(QQmlPropertyPrivate::WriteFlags) = 0; + + void addToObject(); + void removeFromObject(); + + static inline Pointer getPointer(QQmlAbstractBinding *p); + +protected: + virtual ~QQmlAbstractBinding(); + void clear(); + + // Called by QQmlPropertyPrivate to "move" a binding to a different property. + // This is only used for alias properties, and only used by QQmlBinding not + // V8 or V4 bindings. The default implementation qFatal()'s to ensure that the + // method is never called for V4 or V8 bindings. + virtual void retargetBinding(QObject *, int); +private: + Pointer weakPointer(); + + friend class QQmlData; + friend class QQmlComponentPrivate; + friend class QQmlValueTypeProxyBinding; + friend class QQmlPropertyPrivate; + friend class QQmlVME; + friend class QtSharedPointer::ExternalRefCount<QQmlAbstractBinding>; + + typedef QSharedPointer<QQmlAbstractBinding> SharedPointer; + // To save memory, we also store the rarely used weakPointer() instance in here + QPointerValuePair<QQmlAbstractBinding*, SharedPointer> m_mePtr; + + QQmlAbstractBinding **m_prevBinding; + QQmlAbstractBinding *m_nextBinding; +}; + +QQmlAbstractBinding::Pointer +QQmlAbstractBinding::getPointer(QQmlAbstractBinding *p) +{ + return p ? p->weakPointer() : Pointer(); +} + +QT_END_NAMESPACE + +#endif // QQMLABSTRACTBINDING_P_H |