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/****************************************************************************
**
** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtXmlPatterns 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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// 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.
#ifndef Patternist_XsdAttributeUse_H
#define Patternist_XsdAttributeUse_H
#include "qxsdattribute_p.h"
#include "qxsdattributeterm_p.h"
#include <QtCore/QList>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
namespace QPatternist
{
/**
* @short Represents a XSD attribute use object.
*
* This class represents the <em>attribute use</em> object of a XML schema as described
* <a href="http://www.w3.org/TR/xmlschema11-1/#cAttributeUse">here</a>.
*
* It contains information from a local attribute declaration (as child of <em>complexType</em>
* or <em>attributeGroup</em> object).
*
* All other occurrences of the <em>attribute</em> object are represented by the XsdAttribute class.
*
* @see <a href="http://www.w3.org/Submission/2004/SUBM-xmlschema-api-20040309/xml-schema-api.html#Interface-XSAttributeUse">XML Schema API reference</a>
* @ingroup Patternist_schema
* @author Tobias Koenig <tobias.koenig@nokia.com>
*/
class XsdAttributeUse : public XsdAttributeTerm
{
public:
typedef QExplicitlySharedDataPointer<XsdAttributeUse> Ptr;
typedef QList<XsdAttributeUse::Ptr> List;
/**
* Describes the value constraint of an attribute use.
*
* @see <a href="http://www.w3.org/TR/xmlschema11-1/#vc_au">Value Constraint Definition</a>
*/
class ValueConstraint : public QSharedData
{
public:
typedef QExplicitlySharedDataPointer<ValueConstraint> Ptr;
/**
* Describes the <a href="http://www.w3.org/TR/xmlschema11-1/#au-value_constraint">value constraint</a> of an attribute use.
*/
enum Variety
{
Default, ///< The attribute use has a default value set.
Fixed ///< The attribute use has a fixed value set.
};
/**
* Sets the @p variety of the attribute use value constraint.
*/
void setVariety(Variety variety);
/**
* Returns the variety of the attribute use value constraint.
*/
Variety variety() const;
/**
* Sets the @p value of the constraint.
*/
void setValue(const QString &value);
/**
* Returns the value of the constraint.
*/
QString value() const;
/**
* Sets the lexical @p form of the constraint.
*/
void setLexicalForm(const QString &form);
/**
* Returns the lexical form of the constraint.
*/
QString lexicalForm() const;
/**
* Creates a new value constraint from a XsdAttribute::ValueConstraint.
*/
static ValueConstraint::Ptr fromAttributeValueConstraint(const XsdAttribute::ValueConstraint::Ptr &constraint);
private:
Variety m_variety;
QString m_value;
QString m_lexicalForm;
};
/**
* Describes the use type of the attribute use.
*/
enum UseType
{
OptionalUse, ///< The attribute can be there but doesn't need to.
RequiredUse, ///< The attribute must be there.
ProhibitedUse ///< The attribute is not allowed to be there.
};
/**
* Creates a new attribute use object.
*/
XsdAttributeUse();
/**
* Always returns true, used to avoid dynamic casts.
*/
virtual bool isAttributeUse() const;
/**
* Sets the use @p type of the attribute use.
*
* @see UseType
*/
void setUseType(UseType type);
/**
* Returns the use type of the attribute use.
*/
UseType useType() const;
/**
* Returns whether the attribute use is required.
*
* @see <a href="http://www.w3.org/TR/xmlschema11-1/#au-required">Required Definition</a>
*/
bool isRequired() const;
/**
* Sets the @p attribute the attribute use is referring to.
* That is either a local definition as child of a complexType
* or attributeGroup object, or a reference defined by the
* 'ref' attribute.
*
* @see <a href="http://www.w3.org/TR/xmlschema11-1/#au-attribute_declaration">Attribute Declaration</a>
*/
void setAttribute(const XsdAttribute::Ptr &attribute);
/**
* Returns the attribute the attribute use is referring to.
*/
XsdAttribute::Ptr attribute() const;
/**
* Sets the value @p constraint of the attribute use.
*
* @see http://www.w3.org/TR/xmlschema11-1/#vc_au
*/
void setValueConstraint(const ValueConstraint::Ptr &constraint);
/**
* Returns the value constraint of the attribute use.
*/
ValueConstraint::Ptr valueConstraint() const;
private:
UseType m_useType;
XsdAttribute::Ptr m_attribute;
ValueConstraint::Ptr m_valueConstraint;
};
}
QT_END_NAMESPACE
QT_END_HEADER
#endif
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