/****************************************************************************

**

** 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 Qt Designer 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.

**

**

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** $QT_END_LICENSE$

**

****************************************************************************/

#include "qdesigner_introspection_p.h"

#include <QtCore/QMetaObject>

#include <QtCore/QMetaEnum>

#include <QtCore/QStringList>

#include <QtCore/QVector>

QT_BEGIN_NAMESPACE

// Qt Implementation

static QStringList byteArrayListToStringList(const QList<QByteArray> &l)

{

    if (l.empty())

        return QStringList();

    QStringList rc;

    const QList<QByteArray>::const_iterator cend = l.constEnd();

    for (QList<QByteArray>::const_iterator it = l.constBegin(); it != cend; ++it)

        rc += QString::fromUtf8(*it);

    return rc;

}

static inline QString charToQString(const char *c)

{

    if (!c)

        return QString::null;

    return QString::fromUtf8(c);

}

namespace  {

    // ------- QDesignerMetaEnum

    class QDesignerMetaEnum : public QDesignerMetaEnumInterface {

    public:

        QDesignerMetaEnum(const QMetaEnum &qEnum);

        virtual bool isFlag() const                        {  return m_enum.isFlag(); }

        virtual QString key(int index) const               { return charToQString(m_enum.key(index)); }

        virtual int keyCount() const                       { return m_enum.keyCount(); }

        virtual int keyToValue(const QString &key) const   { return m_enum.keyToValue(key.toUtf8()); }

        virtual int keysToValue(const QString &keys) const { return m_enum.keysToValue(keys.toUtf8()); }

        virtual QString name() const                       { return m_name; }

        virtual QString scope() const                      { return m_scope; }

        virtual QString separator() const;

        virtual int value(int index) const                 { return m_enum.value(index); }

        virtual QString valueToKey(int value) const        { return charToQString(m_enum.valueToKey(value)); }

        virtual QString valueToKeys(int value) const       { return charToQString(m_enum.valueToKeys(value)); }

    private:

        const QMetaEnum m_enum;

        const QString m_name;

        const QString m_scope;

    };

    QDesignerMetaEnum::QDesignerMetaEnum(const QMetaEnum &qEnum) :

        m_enum(qEnum),

        m_name(charToQString(m_enum.name())),

        m_scope(charToQString(m_enum.scope()))

    {

    }

    QString QDesignerMetaEnum::separator() const

    {

        static const QString rc = QLatin1String("::");

        return rc;

    }

    // ------- QDesignerMetaProperty

    class QDesignerMetaProperty : public QDesignerMetaPropertyInterface {

    public:

        QDesignerMetaProperty(const QMetaProperty &property);

        virtual ~QDesignerMetaProperty();

        virtual const QDesignerMetaEnumInterface *enumerator() const { return m_enumerator; }

        virtual Kind kind() const { return m_kind; }

        virtual AccessFlags accessFlags() const { return m_access; }

        virtual Attributes attributes(const QObject *object = 0) const;

        virtual QVariant::Type type() const { return m_property.type(); }

        virtual QString name() const        { return m_name; }

        virtual QString typeName() const    { return m_typeName; }

        virtual int userType() const        { return m_property.userType(); }

        virtual bool hasSetter() const              { return m_property.hasStdCppSet(); }

        virtual QVariant read(const QObject *object) const { return m_property.read(object); }

        virtual bool reset(QObject *object) const          { return m_property.reset(object); }

        virtual bool write(QObject *object, const QVariant &value) const { return m_property.write(object, value); }

    private:

        const QMetaProperty m_property;

        const QString m_name;

        const QString m_typeName;

        Kind m_kind;

        AccessFlags m_access;

        Attributes m_defaultAttributes;

        QDesignerMetaEnumInterface *m_enumerator;

    };

    QDesignerMetaProperty::QDesignerMetaProperty(const QMetaProperty &property) :

        m_property(property),

        m_name(charToQString(m_property.name())),

        m_typeName(charToQString(m_property.typeName())),

        m_kind(OtherKind),

        m_enumerator(0)

    {

        if (m_property.isFlagType() || m_property.isEnumType()) {

            const QMetaEnum metaEnum = m_property.enumerator();

            Q_ASSERT(metaEnum.isValid());

            m_enumerator = new QDesignerMetaEnum(metaEnum);

        }

        // kind

        if (m_property.isFlagType())

            m_kind = FlagKind;

        else

            if (m_property.isEnumType())

                m_kind = EnumKind;

        // flags and attributes

        if (m_property.isReadable())

            m_access |= ReadAccess;

        if (m_property.isWritable())

            m_access |= WriteAccess;

        if (m_property.isResettable())

            m_access |= ResetAccess;

        if (m_property.isDesignable())

            m_defaultAttributes |= DesignableAttribute;

        if (m_property.isScriptable())

            m_defaultAttributes |= ScriptableAttribute;

        if (m_property.isStored())

            m_defaultAttributes |= StoredAttribute;

        if (m_property.isUser())

            m_defaultAttributes |= UserAttribute;

    }

    QDesignerMetaProperty::~QDesignerMetaProperty()

    {

        delete m_enumerator;

    }

    QDesignerMetaProperty::Attributes QDesignerMetaProperty::attributes(const QObject *object) const

    {

        if (!object)

            return m_defaultAttributes;

        Attributes rc;

        if (m_property.isDesignable(object))

            rc |= DesignableAttribute;

        if (m_property.isScriptable(object))

            rc |= ScriptableAttribute;

        if (m_property.isStored(object))

            rc |= StoredAttribute;

        if (m_property.isUser(object))

            rc |= UserAttribute;

        return rc;

    }

    // -------------- QDesignerMetaMethod

    class QDesignerMetaMethod : public QDesignerMetaMethodInterface {

    public:

        QDesignerMetaMethod(const QMetaMethod &method);

        virtual Access access() const               { return m_access; }

        virtual MethodType methodType() const       { return m_methodType; }

        virtual QStringList parameterNames() const  { return m_parameterNames; }

        virtual QStringList parameterTypes() const  { return m_parameterTypes; }

        virtual QString signature() const           { return m_signature; }

        virtual QString normalizedSignature() const { return m_normalizedSignature; }

        virtual QString tag() const                 { return m_tag; }

        virtual QString typeName() const            { return m_typeName; }

    private:

        Access m_access;

        MethodType m_methodType;

        const QStringList m_parameterNames;

        const QStringList m_parameterTypes;

        const QString m_signature;

        const QString m_normalizedSignature;

        const QString m_tag;

        const QString m_typeName;

    };

    QDesignerMetaMethod::QDesignerMetaMethod(const QMetaMethod &method) :

       m_parameterNames(byteArrayListToStringList(method.parameterNames())),

       m_parameterTypes(byteArrayListToStringList(method.parameterTypes())),

       m_signature(charToQString(method.signature())),

       m_normalizedSignature(charToQString(QMetaObject::normalizedSignature(method.signature()))),

       m_tag(charToQString(method.tag())),

       m_typeName(charToQString(method.typeName()))

    {

        switch (method.access()) {

        case QMetaMethod::Public:

            m_access = Public;

            break;

        case QMetaMethod::Protected:

            m_access = Protected;

            break;

        case QMetaMethod::Private:

            m_access = Private;

            break;

        }

        switch (method.methodType()) {

        case QMetaMethod::Constructor:

            m_methodType = Constructor;

            break;

        case QMetaMethod::Method:

            m_methodType = Method;

            break;

        case QMetaMethod::Signal:

            m_methodType = Signal;

            break;

        case QMetaMethod::Slot:

            m_methodType = Slot;

            break;

        }

    }

    // ------------- QDesignerMetaObject

    class QDesignerMetaObject : public QDesignerMetaObjectInterface {

    public:

        QDesignerMetaObject(const qdesigner_internal::QDesignerIntrospection *introspection, const QMetaObject *metaObject);

        virtual ~QDesignerMetaObject();

        virtual QString className() const { return m_className; }

        virtual const QDesignerMetaEnumInterface *enumerator(int index) const { return m_enumerators[index]; }

        virtual int enumeratorCount() const { return m_enumerators.size(); }

        virtual int enumeratorOffset() const { return m_metaObject->enumeratorOffset(); }

        virtual int indexOfEnumerator(const QString &name) const { return m_metaObject->indexOfEnumerator(name.toUtf8()); }

        virtual int indexOfMethod(const QString &method) const { return m_metaObject->indexOfMethod(method.toUtf8()); }

        virtual int indexOfProperty(const QString &name) const { return m_metaObject->indexOfProperty(name.toUtf8()); }

        virtual int indexOfSignal(const QString &signal) const { return m_metaObject->indexOfSignal(signal.toUtf8());  }

        virtual int indexOfSlot(const QString &slot) const { return m_metaObject->indexOfSlot(slot.toUtf8()); }

        virtual const QDesignerMetaMethodInterface *method(int index) const { return m_methods[index]; }

        virtual int methodCount() const { return m_methods.size(); }

        virtual int methodOffset() const { return m_metaObject->methodOffset(); }

        virtual const QDesignerMetaPropertyInterface *property(int index) const { return m_properties[index]; }

        virtual int propertyCount() const { return m_properties.size(); }

        virtual int propertyOffset() const { return m_metaObject->propertyOffset(); }

        const QDesignerMetaObjectInterface *superClass() const;

        virtual const QDesignerMetaPropertyInterface *userProperty() const { return m_userProperty; }

    private:

        const QString m_className;

        const qdesigner_internal::QDesignerIntrospection *m_introspection;

        const QMetaObject *m_metaObject;

        typedef QVector<QDesignerMetaEnumInterface *> Enumerators;

        Enumerators m_enumerators;

        typedef QVector<QDesignerMetaMethodInterface *> Methods;

        Methods m_methods;

        typedef QVector<QDesignerMetaPropertyInterface *> Properties;

        Properties m_properties;

        QDesignerMetaPropertyInterface *m_userProperty;

    };

    QDesignerMetaObject::QDesignerMetaObject(const qdesigner_internal::QDesignerIntrospection *introspection, const QMetaObject *metaObject) :

       m_className(charToQString(metaObject->className())),

       m_introspection(introspection),

       m_metaObject(metaObject),

       m_userProperty(0)

    {

        const int numEnumerators = metaObject->enumeratorCount();

        m_enumerators.reserve(numEnumerators);

        for (int i = 0; i < numEnumerators; i++)

            m_enumerators.push_back(new QDesignerMetaEnum(metaObject->enumerator(i)));

        const int numMethods = metaObject->methodCount();

        m_methods.reserve(numMethods);

        for (int i = 0; i < numMethods; i++)

            m_methods.push_back(new QDesignerMetaMethod(metaObject->method(i)));

        const int numProperties = metaObject->propertyCount();

        m_properties.reserve(numProperties);

        for (int i = 0; i < numProperties; i++)

            m_properties.push_back(new QDesignerMetaProperty(metaObject->property(i)));

        const QMetaProperty userProperty = metaObject->userProperty();

        if (userProperty.isValid())

            m_userProperty = new QDesignerMetaProperty(userProperty);

    }

    QDesignerMetaObject::~QDesignerMetaObject()

    {

        qDeleteAll(m_enumerators);

        qDeleteAll(m_methods);

        qDeleteAll(m_properties);

        delete m_userProperty;

    }

    const QDesignerMetaObjectInterface *QDesignerMetaObject::superClass() const

    {

        const QMetaObject *qSuperClass = m_metaObject->superClass();

        if (!qSuperClass)

            return 0;

        return m_introspection->metaObjectForQMetaObject(qSuperClass);

    }

}

namespace qdesigner_internal {

    QDesignerIntrospection::QDesignerIntrospection()

    {

    }

    QDesignerIntrospection::~QDesignerIntrospection()

    {

        qDeleteAll(m_metaObjectMap.values());

    }

    const QDesignerMetaObjectInterface* QDesignerIntrospection::metaObject(const QObject *object) const

    {

        return metaObjectForQMetaObject(object->metaObject());

    }

    const QDesignerMetaObjectInterface* QDesignerIntrospection::metaObjectForQMetaObject(const QMetaObject *metaObject) const

    {

        MetaObjectMap::iterator it = m_metaObjectMap.find(metaObject);

        if (it == m_metaObjectMap.end())

            it = m_metaObjectMap.insert(metaObject, new QDesignerMetaObject(this, metaObject));

        return it.value();

    }

}

QT_END_NAMESPACE