/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the examples of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include <QtScript/QScriptClassPropertyIterator>+
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#include <QtScript/QScriptEngine>+
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#include "bytearrayclass.h"+
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#include "bytearrayprototype.h"+
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+
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#include <stdlib.h>+
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+
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Q_DECLARE_METATYPE(QByteArray*)+
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Q_DECLARE_METATYPE(ByteArrayClass*)+
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+
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class ByteArrayClassPropertyIterator : public QScriptClassPropertyIterator+
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{+
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public:+
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    ByteArrayClassPropertyIterator(const QScriptValue &object);+
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    ~ByteArrayClassPropertyIterator();+
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+
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    bool hasNext() const;+
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    void next();+
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+
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    bool hasPrevious() const;+
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    void previous();+
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+
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    void toFront();+
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    void toBack();+
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+
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    QScriptString name() const;+
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    uint id() const;+
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+
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private:+
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    int m_index;+
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    int m_last;+
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};+
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+
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//! [0]+
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ByteArrayClass::ByteArrayClass(QScriptEngine *engine)+
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    : QObject(engine), QScriptClass(engine)+
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{+
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    qScriptRegisterMetaType<QByteArray>(engine, toScriptValue, fromScriptValue);+
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+
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    length = engine->toStringHandle(QLatin1String("length"));+
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+
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    proto = engine->newQObject(new ByteArrayPrototype(this),+
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                               QScriptEngine::QtOwnership,+
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                               QScriptEngine::SkipMethodsInEnumeration+
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                               | QScriptEngine::ExcludeSuperClassMethods+
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                               | QScriptEngine::ExcludeSuperClassProperties);+
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    QScriptValue global = engine->globalObject();+
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    proto.setPrototype(global.property("Object").property("prototype"));+
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+
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    ctor = engine->newFunction(construct, proto);+
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    ctor.setData(qScriptValueFromValue(engine, this));+
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}+
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//! [0]+
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+
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ByteArrayClass::~ByteArrayClass()+
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{+
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}+
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+
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//! [3]+
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QScriptClass::QueryFlags ByteArrayClass::queryProperty(const QScriptValue &object,+
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                                                       const QScriptString &name,+
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                                                       QueryFlags flags, uint *id)+
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{+
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    QByteArray *ba = qscriptvalue_cast<QByteArray*>(object.data());+
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    if (!ba)+
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        return 0;+
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    if (name == length) {+
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        return flags;+
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    } else {+
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        bool isArrayIndex;+
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        qint32 pos = name.toArrayIndex(&isArrayIndex);+
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        if (!isArrayIndex)+
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            return 0;+
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        *id = pos;+
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        if ((flags & HandlesReadAccess) && (pos >= ba->size()))+
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            flags &= ~HandlesReadAccess;+
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        return flags;+
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    }+
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}+
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//! [3]+
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+
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//! [4]+
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QScriptValue ByteArrayClass::property(const QScriptValue &object,+
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                                      const QScriptString &name, uint id)+
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{+
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    QByteArray *ba = qscriptvalue_cast<QByteArray*>(object.data());+
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    if (!ba)+
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        return QScriptValue();+
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    if (name == length) {+
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        return ba->length();+
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    } else {+
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        qint32 pos = id;+
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        if ((pos < 0) || (pos >= ba->size()))+
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            return QScriptValue();+
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        return uint(ba->at(pos)) & 255;+
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    }+
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    return QScriptValue();+
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}+
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//! [4]+
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+
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//! [5]+
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void ByteArrayClass::setProperty(QScriptValue &object,+
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                                 const QScriptString &name,+
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                                 uint id, const QScriptValue &value)+
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{+
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    QByteArray *ba = qscriptvalue_cast<QByteArray*>(object.data());+
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    if (!ba)+
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        return;+
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    if (name == length) {+
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        ba->resize(value.toInt32());+
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    } else {+
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        qint32 pos = id;+
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        if (pos < 0)+
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            return;+
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        if (ba->size() <= pos)+
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            ba->resize(pos + 1);+
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        (*ba)[pos] = char(value.toInt32());+
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    }+
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}+
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//! [5]+
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+
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//! [6]+
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QScriptValue::PropertyFlags ByteArrayClass::propertyFlags(+
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    const QScriptValue &/*object*/, const QScriptString &name, uint /*id*/)+
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{+
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    if (name == length) {+
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        return QScriptValue::Undeletable+
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            | QScriptValue::SkipInEnumeration;+
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    }+
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    return QScriptValue::Undeletable;+
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}+
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//! [6]+
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+
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//! [7]+
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QScriptClassPropertyIterator *ByteArrayClass::newIterator(const QScriptValue &object)+
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{+
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    return new ByteArrayClassPropertyIterator(object);+
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}+
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//! [7]+
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+
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QString ByteArrayClass::name() const+
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{+
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    return QLatin1String("ByteArray");+
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}+
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+
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QScriptValue ByteArrayClass::prototype() const+
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{+
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    return proto;+
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}+
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+
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QScriptValue ByteArrayClass::constructor()+
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{+
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    return ctor;+
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}+
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+
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QScriptValue ByteArrayClass::newInstance(int size)+
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{+
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    return newInstance(QByteArray(size, /*ch=*/0));+
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}+
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+
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//! [1]+
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QScriptValue ByteArrayClass::newInstance(const QByteArray &ba)+
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{+
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    QScriptValue data = engine()->newVariant(qVariantFromValue(ba));+
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    return engine()->newObject(this, data);+
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}+
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//! [1]+
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+
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//! [2]+
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QScriptValue ByteArrayClass::construct(QScriptContext *ctx, QScriptEngine *)+
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{+
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    ByteArrayClass *cls = qscriptvalue_cast<ByteArrayClass*>(ctx->callee().data());+
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    if (!cls)+
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        return QScriptValue();+
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    QScriptValue arg = ctx->argument(0);+
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    if (arg.instanceOf(ctx->callee()))+
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        return cls->newInstance(qscriptvalue_cast<QByteArray>(arg));+
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    int size = arg.toInt32();+
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    return cls->newInstance(size);+
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}+
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//! [2]+
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+
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QScriptValue ByteArrayClass::toScriptValue(QScriptEngine *eng, const QByteArray &ba)+
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{+
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    QScriptValue ctor = eng->globalObject().property("ByteArray");+
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    ByteArrayClass *cls = qscriptvalue_cast<ByteArrayClass*>(ctor.data());+
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    if (!cls)+
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        return eng->newVariant(qVariantFromValue(ba));+
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    return cls->newInstance(ba);+
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}+
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+
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void ByteArrayClass::fromScriptValue(const QScriptValue &obj, QByteArray &ba)+
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{+
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    ba = qvariant_cast<QByteArray>(obj.data().toVariant());+
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}+
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+
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+
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+
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ByteArrayClassPropertyIterator::ByteArrayClassPropertyIterator(const QScriptValue &object)+
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    : QScriptClassPropertyIterator(object)+
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{+
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    toFront();+
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}+
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+
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ByteArrayClassPropertyIterator::~ByteArrayClassPropertyIterator()+
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{+
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}+
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+
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//! [8]+
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bool ByteArrayClassPropertyIterator::hasNext() const+
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{+
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    QByteArray *ba = qscriptvalue_cast<QByteArray*>(object().data());+
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    return m_index < ba->size();+
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}+
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+
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void ByteArrayClassPropertyIterator::next()+
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{+
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    m_last = m_index;+
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    ++m_index;+
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}+
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+
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bool ByteArrayClassPropertyIterator::hasPrevious() const+
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{+
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    return (m_index > 0);+
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}+
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+
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void ByteArrayClassPropertyIterator::previous()+
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{+
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    --m_index;+
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    m_last = m_index;+
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}+
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+
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void ByteArrayClassPropertyIterator::toFront()+
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{+
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    m_index = 0;+
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    m_last = -1;+
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}+
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+
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void ByteArrayClassPropertyIterator::toBack()+
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{+
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    QByteArray *ba = qscriptvalue_cast<QByteArray*>(object().data());+
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    m_index = ba->size();+
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    m_last = -1;+
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}+
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+
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QScriptString ByteArrayClassPropertyIterator::name() const+
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{+
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    return object().engine()->toStringHandle(QString::number(m_last));+
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}+
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+
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uint ByteArrayClassPropertyIterator::id() const+
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{+
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    return m_last;+
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}+
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//! [8]+
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