/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
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** No Commercial Usage
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** Beta Release License Agreement.
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** 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
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** additional rights. These rights are described in the Nokia Qt LGPL
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** 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
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****************************************************************************/

#ifndef QMLENGINE_P_H
#define QMLENGINE_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 <QtScript/QScriptClass>
#include <QtScript/QScriptValue>
#include <QtScript/QScriptString>
#include <QtCore/qstring.h>
#include <QtCore/qlist.h>
#include <QtCore/qpair.h>
#include <QtCore/qstack.h>
#include <private/qobject_p.h>
#include <private/qmlclassfactory_p.h>
#include <private/qmlcompositetypemanager_p.h>
#include <private/qpodvector_p.h>
#include <QtDeclarative/qml.h>
#include <private/qmlbasicscript_p.h>
#include <private/qmlvaluetype_p.h>
#include <QtDeclarative/qmlcontext.h>
#include <QtDeclarative/qmlengine.h>
#include <QtDeclarative/qmlexpression.h>
#include <QtScript/qscriptengine.h>
#include <private/qmlmetaproperty_p.h>
#include <private/qmlpropertycache_p.h>
#include <private/qmlobjectscriptclass_p.h>
#include <private/qmlcontextscriptclass_p.h>

QT_BEGIN_NAMESPACE

class QmlContext;
class QmlEngine;
class QmlContextPrivate;
class QmlExpression;
class QmlBasicScriptNodeCache;
class QmlContextScriptClass;
class QmlObjectScriptClass;
class QmlTypeNameScriptClass;
class QmlValueTypeScriptClass;
class QScriptEngineDebugger;
class QNetworkReply;
class QNetworkAccessManager;
class QmlAbstractBinding;
class QScriptDeclarativeClass;

class QmlEnginePrivate : public QObjectPrivate
{
    Q_DECLARE_PUBLIC(QmlEngine)
public:
    QmlEnginePrivate(QmlEngine *);
    ~QmlEnginePrivate();

    void init();

    QScriptClass::QueryFlags queryObject(const QString &name, uint *id, 
                                         QObject *);
    QScriptValue propertyObject(const QString &propName, QObject *, 
                                uint id = 0);
    void setPropertyObject(const QScriptValue &, uint id);


    struct CapturedProperty {
        CapturedProperty(QObject *o, int c, int n)
            : object(o), coreIndex(c), notifyIndex(n) {}
        CapturedProperty(const QmlMetaProperty &);

        QObject *object;
        int coreIndex;
        int notifyIndex;
    };
    QPODVector<CapturedProperty> capturedProperties;

    QmlContext *rootContext;
    QmlExpression *currentExpression;
    bool isDebugging;
#ifdef QT_SCRIPTTOOLS_LIB
    QScriptEngineDebugger *debugger;
#endif

    struct ImportedNamespace;
    struct ResolveData {
        ResolveData() : safetyCheckId(0) {}
        int safetyCheckId;

        void clear() { 
            object = 0; context = 0; 
            type = 0; ns = 0;
            contextIndex = -1; isFunction = false;
        }
        QObject *object;
        QmlContext *context;

        QmlType *type;
        QmlEnginePrivate::ImportedNamespace *ns;

        int contextIndex;
        bool isFunction;
        QmlMetaProperty property;
    } resolveData;
    QmlContextScriptClass *contextClass;
    QmlObjectScriptClass *objectClass;
    QmlValueTypeScriptClass *valueTypeClass;
    QmlTypeNameScriptClass *typeNameClass;
    // Used by DOM Core 3 API
    QScriptClass *nodeListClass;
    QScriptClass *namedNodeMapClass;
    // Used by SQL database API
    QScriptClass *sqlQueryClass;

    struct QmlScriptEngine : public QScriptEngine
    {
        QmlScriptEngine(QmlEnginePrivate *priv)
            : p(priv) {}
        QmlEnginePrivate *p;
    };
    QmlScriptEngine scriptEngine;

    QUrl baseUrl;

    template<class T>
    struct SimpleList {
        SimpleList()
            : count(0), values(0) {}
        SimpleList(int r)
            : count(0), values(new T*[r]) {}

        int count;
        T **values;

        void append(T *v) {
            values[count++] = v;
        }

        T *at(int idx) const {
            return values[idx];
        }

        void clear() {
            delete [] values;
        }
    };

    static void clear(SimpleList<QmlAbstractBinding> &);
    static void clear(SimpleList<QmlParserStatus> &);

    QList<SimpleList<QmlAbstractBinding> > bindValues;
    QList<SimpleList<QmlParserStatus> > parserStatus;

    QmlComponent *rootComponent;
    mutable QNetworkAccessManager *networkAccessManager;

    QmlCompositeTypeManager typeManager;
    QStringList fileImportPath;
    QString offlineStoragePath;

    mutable quint32 uniqueId;
    quint32 getUniqueId() const {
        return uniqueId++;
    }

    QmlValueTypeFactory valueTypes;
    // ### Fixme
    typedef QHash<QPair<const QMetaObject *, QString>, bool> FunctionCache;
    FunctionCache functionCache;

    QHash<const QMetaObject *, QmlPropertyCache *> propertyCache;
    QmlPropertyCache *cache(QObject *obj) { 
        Q_Q(QmlEngine);
        if (!obj || QObjectPrivate::get(obj)->metaObject) return 0;
        const QMetaObject *mo = obj->metaObject();
        QmlPropertyCache *rv = propertyCache.value(mo);
        if (!rv) {
            rv = QmlPropertyCache::create(q, mo);
            propertyCache.insert(mo, rv);
        }
        return rv;
    }

    struct Imports {
        Imports();
        ~Imports();
        Imports(const Imports &copy);
        Imports &operator =(const Imports &copy);

        void setBaseUrl(const QUrl& url);
        QUrl baseUrl() const;

    private:
        friend class QmlEnginePrivate;
        QmlImportsPrivate *d;
    };

    bool addToImport(Imports*, const QString& uri, const QString& prefix, int vmaj, int vmin, QmlScriptParser::Import::Type importType) const;
    bool resolveType(const Imports&, const QByteArray& type,
                     QmlType** type_return, QUrl* url_return,
                     int *version_major, int *version_minor,
                     ImportedNamespace** ns_return) const;
    void resolveTypeInNamespace(ImportedNamespace*, const QByteArray& type,
                                QmlType** type_return, QUrl* url_return,
                                int *version_major, int *version_minor ) const;


    void registerCompositeType(QmlCompiledData *);
    bool isQmlList(int) const;
    bool isObject(int);
    int qmlListType(int) const;
    const QMetaObject *rawMetaObjectForType(int) const;
    const QMetaObject *metaObjectForType(int) const;
    QHash<int, int> m_qmlLists;
    QHash<int, QmlCompiledData *> m_compositeTypes;

    static QScriptValue qmlScriptObject(QObject*, QmlEngine*);
    static QScriptValue createComponent(QScriptContext*, QScriptEngine*);
    static QScriptValue createQmlObject(QScriptContext*, QScriptEngine*);
    static QScriptValue vector(QScriptContext*, QScriptEngine*);
    static QScriptValue rgba(QScriptContext*, QScriptEngine*);
    static QScriptValue hsla(QScriptContext*, QScriptEngine*);
    static QScriptValue point(QScriptContext*, QScriptEngine*);
    static QScriptValue size(QScriptContext*, QScriptEngine*);
    static QScriptValue rect(QScriptContext*, QScriptEngine*);

    static QScriptValue lighter(QScriptContext*, QScriptEngine*);
    static QScriptValue darker(QScriptContext*, QScriptEngine*);
    static QScriptValue tint(QScriptContext*, QScriptEngine*);

    static QScriptEngine *getScriptEngine(QmlEngine *e) { return &e->d_func()->scriptEngine; }
    static QmlEngine *getEngine(QScriptEngine *e) { return static_cast<QmlScriptEngine*>(e)->p->q_func(); }
    static QmlEnginePrivate *get(QmlEngine *e) { return e->d_func(); }
    static QmlEnginePrivate *get(QScriptEngine *e) { return static_cast<QmlScriptEngine*>(e)->p; }
};


class QmlScriptClass : public QScriptClass
{
public:
    QmlScriptClass(QmlEngine *);

    static QVariant toVariant(QmlEngine *, const QScriptValue &);
protected:
    QmlEngine *engine;
};

class QmlTypeNameScriptClass : public QmlScriptClass
{
public:
    QmlTypeNameScriptClass(QmlEngine *);
    ~QmlTypeNameScriptClass();

    virtual QueryFlags queryProperty(const QScriptValue &object,
                                     const QScriptString &name,
                                     QueryFlags flags, uint *id);
    virtual QScriptValue property(const QScriptValue &object,
                                  const QScriptString &name, 
                                  uint id);

private:
    QObject *object;
    QmlType *type;
    quint32 enumValue;
};

class QmlValueTypeScriptClass : public QmlScriptClass
{
public:
    QmlValueTypeScriptClass(QmlEngine *);
    ~QmlValueTypeScriptClass();

    virtual QueryFlags queryProperty(const QScriptValue &object,
                                     const QScriptString &name,
                                     QueryFlags flags, uint *id);
    virtual QScriptValue property(const QScriptValue &object,
                                  const QScriptString &name, 
                                  uint id);
    virtual void setProperty(QScriptValue &object,
                             const QScriptString &name,
                             uint id,
                             const QScriptValue &value);
};

QT_END_NAMESPACE

#endif // QMLENGINE_P_H