| /**************************************************************************** |
| ** |
| ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). |
| ** All rights reserved. |
| ** Contact: Nokia Corporation (qt-info@nokia.com) |
| ** |
| ** This file is part of the QtDeclarative 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 QDECLARATIVECONTEXT_P_H |
| #define QDECLARATIVECONTEXT_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 "qdeclarativecontext.h" |
| |
| #include "private/qdeclarativedata_p.h" |
| #include "private/qdeclarativeintegercache_p.h" |
| #include "private/qdeclarativetypenamecache_p.h" |
| #include "private/qdeclarativenotifier_p.h" |
| #include "qdeclarativelist.h" |
| #include "private/qdeclarativeparser_p.h" |
| |
| #include <QtCore/qhash.h> |
| #include <QtScript/qscriptvalue.h> |
| #include <QtCore/qset.h> |
| |
| #include <private/qobject_p.h> |
| #include "private/qdeclarativeguard_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QDeclarativeContext; |
| class QDeclarativeExpression; |
| class QDeclarativeEngine; |
| class QDeclarativeExpression; |
| class QDeclarativeExpressionPrivate; |
| class QDeclarativeAbstractExpression; |
| class QDeclarativeCompiledBindings; |
| class QDeclarativeContextData; |
| |
| class QDeclarativeContextPrivate : public QObjectPrivate |
| { |
| Q_DECLARE_PUBLIC(QDeclarativeContext) |
| public: |
| QDeclarativeContextPrivate(); |
| |
| QDeclarativeContextData *data; |
| |
| QList<QVariant> propertyValues; |
| int notifyIndex; |
| |
| static QDeclarativeContextPrivate *get(QDeclarativeContext *context) { |
| return static_cast<QDeclarativeContextPrivate *>(QObjectPrivate::get(context)); |
| } |
| static QDeclarativeContext *get(QDeclarativeContextPrivate *context) { |
| return static_cast<QDeclarativeContext *>(context->q_func()); |
| } |
| |
| // Only used for debugging |
| QList<QPointer<QObject> > instances; |
| |
| static int context_count(QDeclarativeListProperty<QObject> *); |
| static QObject *context_at(QDeclarativeListProperty<QObject> *, int); |
| }; |
| |
| class QDeclarativeComponentAttached; |
| class QDeclarativeGuardedContextData; |
| class Q_AUTOTEST_EXPORT QDeclarativeContextData |
| { |
| public: |
| QDeclarativeContextData(); |
| QDeclarativeContextData(QDeclarativeContext *); |
| void clearContext(); |
| void destroy(); |
| void invalidate(); |
| |
| inline bool isValid() const { |
| return engine && (!isInternal || !contextObject || !QObjectPrivate::get(contextObject)->wasDeleted); |
| } |
| |
| // My parent context and engine |
| QDeclarativeContextData *parent; |
| QDeclarativeEngine *engine; |
| |
| void setParent(QDeclarativeContextData *); |
| void refreshExpressions(); |
| |
| void addObject(QObject *); |
| |
| QUrl resolvedUrl(const QUrl &); |
| |
| // My containing QDeclarativeContext. If isInternal is true this owns publicContext. |
| // If internal is false publicContext owns this. |
| QDeclarativeContext *asQDeclarativeContext(); |
| QDeclarativeContextPrivate *asQDeclarativeContextPrivate(); |
| bool isInternal; |
| QDeclarativeContext *publicContext; |
| |
| // Property name cache |
| QDeclarativeIntegerCache *propertyNames; |
| |
| // Context object |
| QObject *contextObject; |
| |
| // Any script blocks that exist on this context |
| QList<QScriptValue> importedScripts; |
| void addImportedScript(const QDeclarativeParser::Object::ScriptBlock &script); |
| |
| // Context base url |
| QUrl url; |
| |
| // List of imports that apply to this context |
| QDeclarativeTypeNameCache *imports; |
| |
| // My children |
| QDeclarativeContextData *childContexts; |
| |
| // My peers in parent's childContexts list |
| QDeclarativeContextData *nextChild; |
| QDeclarativeContextData **prevChild; |
| |
| // Expressions that use this context |
| QDeclarativeAbstractExpression *expressions; |
| |
| // Doubly-linked list of objects that are owned by this context |
| QDeclarativeData *contextObjects; |
| |
| // Doubly-linked list of context guards (XXX merge with contextObjects) |
| QDeclarativeGuardedContextData *contextGuards; |
| |
| // id guards |
| struct ContextGuard : public QDeclarativeGuard<QObject> |
| { |
| ContextGuard() : context(0) {} |
| inline ContextGuard &operator=(QObject *obj) |
| { QDeclarativeGuard<QObject>::operator=(obj); return *this; } |
| virtual void objectDestroyed(QObject *) { |
| if (context->contextObject && !QObjectPrivate::get(context->contextObject)->wasDeleted) bindings.notify(); |
| } |
| QDeclarativeContextData *context; |
| QDeclarativeNotifier bindings; |
| }; |
| ContextGuard *idValues; |
| int idValueCount; |
| void setIdProperty(int, QObject *); |
| void setIdPropertyData(QDeclarativeIntegerCache *); |
| |
| // Optimized binding pointer |
| QDeclarativeCompiledBindings *optimizedBindings; |
| |
| // Linked contexts. this owns linkedContext. |
| QDeclarativeContextData *linkedContext; |
| |
| // Linked list of uses of the Component attached property in this |
| // context |
| QDeclarativeComponentAttached *componentAttached; |
| |
| // Return the outermost id for obj, if any. |
| QString findObjectId(const QObject *obj) const; |
| |
| static QDeclarativeContextData *get(QDeclarativeContext *context) { |
| return QDeclarativeContextPrivate::get(context)->data; |
| } |
| |
| private: |
| ~QDeclarativeContextData() {} |
| }; |
| |
| class QDeclarativeGuardedContextData |
| { |
| public: |
| inline QDeclarativeGuardedContextData(); |
| inline QDeclarativeGuardedContextData(QDeclarativeContextData *); |
| inline ~QDeclarativeGuardedContextData(); |
| |
| inline void setContextData(QDeclarativeContextData *); |
| |
| inline QDeclarativeContextData *contextData(); |
| |
| inline operator QDeclarativeContextData*() const { return m_contextData; } |
| inline QDeclarativeContextData* operator->() const { return m_contextData; } |
| inline QDeclarativeGuardedContextData &operator=(QDeclarativeContextData *d); |
| |
| private: |
| QDeclarativeGuardedContextData &operator=(const QDeclarativeGuardedContextData &); |
| QDeclarativeGuardedContextData(const QDeclarativeGuardedContextData &); |
| friend class QDeclarativeContextData; |
| |
| inline void clear(); |
| |
| QDeclarativeContextData *m_contextData; |
| QDeclarativeGuardedContextData *m_next; |
| QDeclarativeGuardedContextData **m_prev; |
| }; |
| |
| QDeclarativeGuardedContextData::QDeclarativeGuardedContextData() |
| : m_contextData(0), m_next(0), m_prev(0) |
| { |
| } |
| |
| QDeclarativeGuardedContextData::QDeclarativeGuardedContextData(QDeclarativeContextData *data) |
| : m_contextData(0), m_next(0), m_prev(0) |
| { |
| setContextData(data); |
| } |
| |
| QDeclarativeGuardedContextData::~QDeclarativeGuardedContextData() |
| { |
| clear(); |
| } |
| |
| void QDeclarativeGuardedContextData::setContextData(QDeclarativeContextData *contextData) |
| { |
| clear(); |
| |
| if (contextData) { |
| m_contextData = contextData; |
| m_next = contextData->contextGuards; |
| if (m_next) m_next->m_prev = &m_next; |
| m_prev = &contextData->contextGuards; |
| contextData->contextGuards = this; |
| } |
| } |
| |
| QDeclarativeContextData *QDeclarativeGuardedContextData::contextData() |
| { |
| return m_contextData; |
| } |
| |
| void QDeclarativeGuardedContextData::clear() |
| { |
| if (m_prev) { |
| *m_prev = m_next; |
| if (m_next) m_next->m_prev = m_prev; |
| m_contextData = 0; |
| m_next = 0; |
| m_prev = 0; |
| } |
| } |
| |
| QDeclarativeGuardedContextData & |
| QDeclarativeGuardedContextData::operator=(QDeclarativeContextData *d) |
| { |
| setContextData(d); |
| return *this; |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif // QDECLARATIVECONTEXT_P_H |