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diff --git a/src/declarative/debugger/qmldebug_p.h b/src/declarative/debugger/qmldebug_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef QMLDEBUG_H
+#define QMLDEBUG_H
+
+#include <QtCore/qobject.h>
+#include <QtCore/qurl.h>
+#include <QtCore/qvariant.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Declarative)
+
+class QmlDebugConnection;
+class QmlDebugWatch;
+class QmlDebugPropertyWatch;
+class QmlDebugObjectExpressionWatch;
+class QmlDebugEnginesQuery;
+class QmlDebugRootContextQuery;
+class QmlDebugObjectQuery;
+class QmlDebugExpressionQuery;
+class QmlDebugPropertyReference;
+class QmlDebugContextReference;
+class QmlDebugObjectReference;
+class QmlDebugFileReference;
+class QmlDebugEngineReference;
+class QmlEngineDebugPrivate;
+class Q_DECLARATIVE_EXPORT QmlEngineDebug : public QObject
+{
+Q_OBJECT
+public:
+    QmlEngineDebug(QmlDebugConnection *, QObject * = 0);
+
+    QmlDebugPropertyWatch *addWatch(const QmlDebugPropertyReference &,
+                            QObject *parent = 0);
+    QmlDebugWatch *addWatch(const QmlDebugContextReference &, const QString &,
+                            QObject *parent = 0);
+    QmlDebugObjectExpressionWatch *addWatch(const QmlDebugObjectReference &, const QString &,
+                            QObject *parent = 0);
+    QmlDebugWatch *addWatch(const QmlDebugObjectReference &,
+                            QObject *parent = 0);
+    QmlDebugWatch *addWatch(const QmlDebugFileReference &,
+                            QObject *parent = 0);
+
+    void removeWatch(QmlDebugWatch *watch);
+
+    QmlDebugEnginesQuery *queryAvailableEngines(QObject *parent = 0);
+    QmlDebugRootContextQuery *queryRootContexts(const QmlDebugEngineReference &,
+                                                QObject *parent = 0);
+    QmlDebugObjectQuery *queryObject(const QmlDebugObjectReference &, 
+                                     QObject *parent = 0);
+    QmlDebugObjectQuery *queryObjectRecursive(const QmlDebugObjectReference &, 
+                                              QObject *parent = 0);
+    QmlDebugExpressionQuery *queryExpressionResult(int objectDebugId, 
+                                                   const QString &expr,
+                                                   QObject *parent = 0);
+
+private:
+    Q_DECLARE_PRIVATE(QmlEngineDebug)
+};
+
+class Q_DECLARATIVE_EXPORT QmlDebugWatch : public QObject
+{
+Q_OBJECT
+public:
+    enum State { Waiting, Active, Inactive, Dead };
+
+    QmlDebugWatch(QObject *);
+    ~QmlDebugWatch();
+
+    int queryId() const;
+    int objectDebugId() const;
+    State state() const;
+
+Q_SIGNALS:
+    void stateChanged(QmlDebugWatch::State);
+    //void objectChanged(int, const QmlDebugObjectReference &);
+    //void valueChanged(int, const QVariant &);
+
+    // Server sends value as string if it is a user-type variant
+    void valueChanged(const QByteArray &name, const QVariant &value);
+
+private:
+    friend class QmlEngineDebug;
+    friend class QmlEngineDebugPrivate;
+    void setState(State);
+    State m_state;
+    int m_queryId;
+    QmlEngineDebug *m_client;
+    int m_objectDebugId;
+};
+
+class Q_DECLARATIVE_EXPORT QmlDebugPropertyWatch : public QmlDebugWatch
+{
+    Q_OBJECT
+public:
+    QmlDebugPropertyWatch(QObject *parent);
+
+    QString name() const;
+
+private:
+    friend class QmlEngineDebug;
+    QString m_name;
+};
+
+class Q_DECLARATIVE_EXPORT QmlDebugObjectExpressionWatch : public QmlDebugWatch
+{
+    Q_OBJECT
+public:
+    QmlDebugObjectExpressionWatch(QObject *parent);
+
+    QString expression() const;
+
+private:
+    friend class QmlEngineDebug;
+    QString m_expr;
+    int m_debugId;
+};
+
+
+class Q_DECLARATIVE_EXPORT QmlDebugQuery : public QObject
+{
+Q_OBJECT
+public:
+    enum State { Waiting, Error, Completed };
+
+    State state() const;
+    bool isWaiting() const;
+
+//    bool waitUntilCompleted();
+
+Q_SIGNALS:
+    void stateChanged(QmlDebugQuery::State);
+
+protected:
+    QmlDebugQuery(QObject *);
+
+private:
+    friend class QmlEngineDebug;
+    friend class QmlEngineDebugPrivate;
+    void setState(State);
+    State m_state;
+};
+
+class Q_DECLARATIVE_EXPORT QmlDebugFileReference 
+{
+public:
+    QmlDebugFileReference();
+    QmlDebugFileReference(const QmlDebugFileReference &);
+    QmlDebugFileReference &operator=(const QmlDebugFileReference &);
+
+    QUrl url() const;
+    void setUrl(const QUrl &);
+    int lineNumber() const;
+    void setLineNumber(int);
+    int columnNumber() const;
+    void setColumnNumber(int);
+
+private:
+    friend class QmlEngineDebugPrivate;
+    QUrl m_url;
+    int m_lineNumber;
+    int m_columnNumber;
+};
+
+class Q_DECLARATIVE_EXPORT QmlDebugEngineReference
+{
+public:
+    QmlDebugEngineReference();
+    QmlDebugEngineReference(int);
+    QmlDebugEngineReference(const QmlDebugEngineReference &);
+    QmlDebugEngineReference &operator=(const QmlDebugEngineReference &);
+
+    int debugId() const;
+    QString name() const;
+
+private:
+    friend class QmlEngineDebugPrivate;
+    int m_debugId;
+    QString m_name;
+};
+
+class Q_DECLARATIVE_EXPORT QmlDebugObjectReference
+{
+public:
+    QmlDebugObjectReference();
+    QmlDebugObjectReference(int);
+    QmlDebugObjectReference(const QmlDebugObjectReference &);
+    QmlDebugObjectReference &operator=(const QmlDebugObjectReference &);
+
+    int debugId() const;
+    QString className() const;
+    QString name() const;
+
+    QmlDebugFileReference source() const;
+    int contextDebugId() const;
+
+    QList<QmlDebugPropertyReference> properties() const;
+    QList<QmlDebugObjectReference> children() const;
+
+private:
+    friend class QmlEngineDebugPrivate;
+    int m_debugId;
+    QString m_class;
+    QString m_name;
+    QmlDebugFileReference m_source;
+    int m_contextDebugId;
+    QList<QmlDebugPropertyReference> m_properties;
+    QList<QmlDebugObjectReference> m_children;
+};
+
+class Q_DECLARATIVE_EXPORT QmlDebugContextReference
+{
+public:
+    QmlDebugContextReference();
+    QmlDebugContextReference(const QmlDebugContextReference &);
+    QmlDebugContextReference &operator=(const QmlDebugContextReference &);
+
+    int debugId() const;
+    QString name() const;
+
+    QList<QmlDebugObjectReference> objects() const;
+    QList<QmlDebugContextReference> contexts() const;
+
+private:
+    friend class QmlEngineDebugPrivate;
+    int m_debugId;
+    QString m_name;
+    QList<QmlDebugObjectReference> m_objects;
+    QList<QmlDebugContextReference> m_contexts;
+};
+
+class Q_DECLARATIVE_EXPORT QmlDebugPropertyReference
+{
+public:
+    QmlDebugPropertyReference();
+    QmlDebugPropertyReference(const QmlDebugPropertyReference &);
+    QmlDebugPropertyReference &operator=(const QmlDebugPropertyReference &);
+
+    int objectDebugId() const;
+    QString name() const;
+    QVariant value() const;
+    QString valueTypeName() const;
+    QString binding() const;
+    bool hasNotifySignal() const;
+
+private:
+    friend class QmlEngineDebugPrivate;
+    int m_objectDebugId;
+    QString m_name;
+    QVariant m_value;
+    QString m_valueTypeName;
+    QString m_binding;
+    bool m_hasNotifySignal;
+};
+
+
+class Q_DECLARATIVE_EXPORT QmlDebugEnginesQuery : public QmlDebugQuery
+{
+Q_OBJECT
+public:
+    virtual ~QmlDebugEnginesQuery();
+    QList<QmlDebugEngineReference> engines() const;
+private:
+    friend class QmlEngineDebug;
+    friend class QmlEngineDebugPrivate;
+    QmlDebugEnginesQuery(QObject *);
+    QmlEngineDebug *m_client;
+    int m_queryId;
+    QList<QmlDebugEngineReference> m_engines;
+};
+
+class Q_DECLARATIVE_EXPORT QmlDebugRootContextQuery : public QmlDebugQuery
+{
+Q_OBJECT
+public:
+    virtual ~QmlDebugRootContextQuery();
+    QmlDebugContextReference rootContext() const;
+private:
+    friend class QmlEngineDebug;
+    friend class QmlEngineDebugPrivate;
+    QmlDebugRootContextQuery(QObject *);
+    QmlEngineDebug *m_client;
+    int m_queryId;
+    QmlDebugContextReference m_context;
+};
+
+class Q_DECLARATIVE_EXPORT QmlDebugObjectQuery : public QmlDebugQuery
+{
+Q_OBJECT
+public:
+    virtual ~QmlDebugObjectQuery();
+    QmlDebugObjectReference object() const;
+private:
+    friend class QmlEngineDebug;
+    friend class QmlEngineDebugPrivate;
+    QmlDebugObjectQuery(QObject *);
+    QmlEngineDebug *m_client;
+    int m_queryId;
+    QmlDebugObjectReference m_object;
+
+};
+
+class Q_DECLARATIVE_EXPORT QmlDebugExpressionQuery : public QmlDebugQuery
+{
+Q_OBJECT
+public:
+    virtual ~QmlDebugExpressionQuery();
+    QString expression() const;
+    QVariant result() const;
+private:
+    friend class QmlEngineDebug;
+    friend class QmlEngineDebugPrivate;
+    QmlDebugExpressionQuery(QObject *);
+    QmlEngineDebug *m_client;
+    int m_queryId;
+    QString m_expr;
+    QVariant m_result;
+
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QMLDEBUG_H