qt_demoe/third/designer/lib/shared/qdesigner_introspection.cpp

373 lines
14 KiB
C++

/****************************************************************************
**
** Copyright (C) 2010 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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.
**
** 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#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();
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