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+/****************************************************************************
+**
+** Copyright (C) 2012 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
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