/*
 * Copyright 2003,2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * $Log: XSAttributeDeclaration.hpp,v $
 * Revision 1.10  2004/09/08 13:56:07  peiyongz
 * Apache License Version 2.0
 *
 * Revision 1.9  2004/05/04 19:02:40  cargilld
 * Enable IDs to work on all kinds of schema components
 *
 * Revision 1.8  2003/12/24 17:42:02  knoaman
 * Misc. PSVI updates
 *
 * Revision 1.7  2003/12/01 23:23:26  neilg
 * fix for bug 25118; thanks to Jeroen Witmond
 *
 * Revision 1.6  2003/11/21 22:34:45  neilg
 * More schema component model implementation, thanks to David Cargill.
 * In particular, this cleans up and completes the XSModel, XSNamespaceItem,
 * XSAttributeDeclaration and XSAttributeGroup implementations.
 *
 * Revision 1.5  2003/11/21 17:19:30  knoaman
 * PSVI update.
 *
 * Revision 1.4  2003/11/14 22:47:53  neilg
 * fix bogus log message from previous commit...
 *
 * Revision 1.3  2003/11/14 22:33:30  neilg
 * Second phase of schema component model implementation.  
 * Implement XSModel, XSNamespaceItem, and the plumbing necessary
 * to connect them to the other components.
 * Thanks to David Cargill.
 *
 * Revision 1.2  2003/11/06 15:30:04  neilg
 * first part of PSVI/schema component model implementation, thanks to David Cargill.  This covers setting the PSVIHandler on parser objects, as well as implementing XSNotation, XSSimpleTypeDefinition, XSIDCDefinition, and most of XSWildcard, XSComplexTypeDefinition, XSElementDeclaration, XSAttributeDeclaration and XSAttributeUse.
 *
 * Revision 1.1  2003/09/16 14:33:36  neilg
 * PSVI/schema component model classes, with Makefile/configuration changes necessary to build them
 *
 */

#if !defined(XSATTRIBUTEDECLARATION_HPP)
#define XSATTRIBUTEDECLARATION_HPP

#include <xercesc/framework/psvi/XSObject.hpp>

XERCES_CPP_NAMESPACE_BEGIN

/**
 * This class describes all properties of a Schema Attribute
 * Declaration component.
 * This is *always* owned by the validator /parser object from which
 * it is obtained.  
 */

// forward declarations
class XSAnnotation;
class XSComplexTypeDefinition;
class XSSimpleTypeDefinition;
class SchemaAttDef;

class XMLPARSER_EXPORT XSAttributeDeclaration : public XSObject
{
public:

    //  Constructors and Destructor
    // -----------------------------------------------------------------------
    /** @name Constructors */
    //@{

    /**
      * The default constructor 
      *
      * @param  attDef      
      * @param  typeDef     
      * @param  annot       
      * @param  xsModel     
      * @param  scope       
      * @param  enclosingCTDefinition
      * @param  manager     The configurable memory manager
      */
    XSAttributeDeclaration
    (
        SchemaAttDef* const             attDef
        , XSSimpleTypeDefinition* const typeDef
        , XSAnnotation* const           annot
        , XSModel* const                xsModel
        , XSConstants::SCOPE            scope
        , XSComplexTypeDefinition*      enclosingCTDefinition
        , MemoryManager* const          manager = XMLPlatformUtils::fgMemoryManager
    );

    //@};

    /** @name Destructor */
    //@{
    ~XSAttributeDeclaration();
    //@}

    //---------------------
    /** @name overridden XSObject methods */

    //@{

    /**
     * The name of type <code>NCName</code> of this declaration as defined in 
     * XML Namespaces.
     */
    const XMLCh* getName();

    /**
     *  The [target namespace] of this object, or <code>null</code> if it is 
     * unspecified. 
     */
    const XMLCh* getNamespace();

    /**
     * A namespace schema information item corresponding to the target 
     * namespace of the component, if it's globally declared; or null 
     * otherwise.
     */
    XSNamespaceItem* getNamespaceItem();

    //@}

    /** @name XSAttributeDeclaration methods **/

    //@{

    /**
     * [type definition]: A simple type definition 
     */
    XSSimpleTypeDefinition *getTypeDefinition() const;

    /**
     * Optional. One of <code>SCOPE_GLOBAL</code>, <code>SCOPE_LOCAL</code>, 
     * or <code>SCOPE_ABSENT</code>. If the scope is local, then the 
     * <code>enclosingCTDefinition</code> is present. 
     */
    XSConstants::SCOPE getScope() const;

    /**
     * The complex type definition for locally scoped declarations (see 
     * <code>scope</code>). 
     */
    XSComplexTypeDefinition *getEnclosingCTDefinition();

    /**
     * Value constraint: one of <code>VC_NONE, VC_DEFAULT, VC_FIXED</code>. 
     */
    XSConstants::VALUE_CONSTRAINT getConstraintType() const;

    /**
     * Value constraint: The actual value with respect to the [type definition
     * ]. 
     */
    const XMLCh *getConstraintValue();

    /**
     * Optional. Annotation. 
     */
    XSAnnotation *getAnnotation() const;

    //@}

    //----------------------------------
    /** methods needed by implementation */

    //@{

    bool getRequired() const;
    //@}

private:

    void setEnclosingCTDefinition(XSComplexTypeDefinition* const toSet);
    friend class XSObjectFactory;

    // -----------------------------------------------------------------------
    //  Unimplemented constructors and operators
    // -----------------------------------------------------------------------
    XSAttributeDeclaration(const XSAttributeDeclaration&);
    XSAttributeDeclaration & operator=(const XSAttributeDeclaration &);

protected:

    // -----------------------------------------------------------------------
    //  data members
    // -----------------------------------------------------------------------
    SchemaAttDef*               fAttDef;
    XSSimpleTypeDefinition*     fTypeDefinition;
    XSAnnotation*               fAnnotation;
    XSConstants::SCOPE          fScope;
    XSComplexTypeDefinition*    fEnclosingCTDefinition;
};

// ---------------------------------------------------------------------------
//  XSAttributeDeclaration: inline methods
// ---------------------------------------------------------------------------
inline XSSimpleTypeDefinition* XSAttributeDeclaration::getTypeDefinition() const
{
    return fTypeDefinition;
}

inline XSAnnotation *XSAttributeDeclaration::getAnnotation() const
{
    return fAnnotation;
}

inline XSConstants::SCOPE XSAttributeDeclaration::getScope() const
{   
    return fScope;
}

inline XSComplexTypeDefinition *XSAttributeDeclaration::getEnclosingCTDefinition()
{
    return fEnclosingCTDefinition;
}

inline void XSAttributeDeclaration::setEnclosingCTDefinition
(
    XSComplexTypeDefinition* const toSet
)
{
    fEnclosingCTDefinition = toSet;
}

XERCES_CPP_NAMESPACE_END

#endif
