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 * Licensed to the Apache Software Foundation (ASF) under one
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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
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 *************************************************************/


#ifndef _XMLOFF_FORMS_PROPERTYIMPORT_HXX_
#define _XMLOFF_FORMS_PROPERTYIMPORT_HXX_

#include <xmloff/xmlictxt.hxx>
#include "formattributes.hxx"
#include <vos/ref.hxx>
#include <comphelper/stl_types.hxx>
#include <com/sun/star/beans/PropertyValue.hpp>
#include "layerimport.hxx"

namespace com { namespace sun { namespace star { namespace util {
	struct Time;
	struct Date;
} } } }

//.........................................................................
namespace xmloff
{
//.........................................................................

	//=====================================================================
	//= PropertyConversion
	//=====================================================================
    class PropertyConversion
    {
    public:
		static ::com::sun::star::uno::Any convertString(
            SvXMLImport& _rImporter,
            const ::com::sun::star::uno::Type& _rExpectedType,
			const ::rtl::OUString& _rReadCharacters,
            const SvXMLEnumMapEntry* _pEnumMap = NULL,
            const sal_Bool _bInvertBoolean = sal_False
        );

        static ::com::sun::star::uno::Type xmlTypeToUnoType( const ::rtl::OUString& _rType );
    };

	class OFormLayerXMLImport_Impl;
	//=====================================================================
	//= OPropertyImport
	//=====================================================================
	/** Helper class for importing property values

		<p>This class imports properties which are stored as attributes as well as properties which
		are stored in </em>&lt;form:properties&gt;</em> elements.</p>
	*/
	class OPropertyImport : public SvXMLImportContext
	{
		friend class OSinglePropertyContext;
        friend class OListPropertyContext;

	protected:
        typedef ::std::vector< ::com::sun::star::beans::PropertyValue > PropertyValueArray;
		PropertyValueArray			m_aValues;
		PropertyValueArray			m_aGenericValues;
			// the values which the instance collects between StartElement and EndElement

		DECLARE_STL_STDKEY_SET( ::rtl::OUString, StringSet );
		StringSet					m_aEncounteredAttributes;

		OFormLayerXMLImport_Impl&		m_rContext;

		sal_Bool					m_bTrackAttributes;

		// TODO: think about the restriction that the class does not know anything about the object it is importing.
		// Perhaps this object should be known to the class, so setting the properties ('normal' ones as well as
		// style properties) can be done in our own EndElement instead of letting derived classes do this.

	public:
		OPropertyImport(OFormLayerXMLImport_Impl& _rImport, sal_uInt16 _nPrefix, const ::rtl::OUString& _rName);

		virtual SvXMLImportContext* CreateChildContext(
			sal_uInt16 _nPrefix, const ::rtl::OUString& _rLocalName,
			const ::com::sun::star::uno::Reference< ::com::sun::star::xml::sax::XAttributeList >& _rxAttrList);

		virtual void StartElement(
			const ::com::sun::star::uno::Reference< ::com::sun::star::xml::sax::XAttributeList >& _rxAttrList);
		virtual void Characters(const ::rtl::OUString& _rChars);

	protected:
		/** handle one single attribute.

			<p>This is called for every attribute of the element. This class' implementaion checks if the attribute
			describes a property, if so, it is added to <member>m_aValues</member>.</p>

			<p>All non-property attributes should be handled in derived classes.</p>

			@param _nNamespaceKey
				key of the namespace used in the attribute
			@param _rLocalName
				local (relative to the namespace) attribute name
			@param _rValue
				attribute value
		*/
		virtual bool handleAttribute(sal_uInt16 _nNamespaceKey,
			const ::rtl::OUString& _rLocalName,
			const ::rtl::OUString& _rValue);

		/** determine if the element imported by the object had an given attribute.
			<p>Please be aware of the fact that the name given must be a local name, i.e. not contain a namespace.
			All form relevant attributes are in the same namespace, so this would be an redundant information.</p>
		*/
		sal_Bool	encounteredAttribute(const ::rtl::OUString& _rAttributeName) const;

		/** determine if the element imported by the object had an given attribute.
			<p>Please be aware of the fact that the name given must be a local name, i.e. not contain a namespace.
			All form relevant attributes are in the same namespace, so this would be an redundant information.</p>
		*/
		sal_Bool	encounteredAttribute(const sal_Char* _pAttributeName) const { return encounteredAttribute(::rtl::OUString::createFromAscii(_pAttributeName)); }

		/** enables the tracking of the encountered attributes
			<p>The tracking will raise the import costs a little bit, but it's cheaper than
			derived classes tracking this themself.</p>
		*/
		void		enableTrackAttributes() { m_bTrackAttributes = sal_True; }

		inline void implPushBackPropertyValue(const ::com::sun::star::beans::PropertyValue& _rProp)
		{
            m_aValues.push_back(_rProp);
        }

        inline void implPushBackPropertyValue( const ::rtl::OUString& _rName, const ::com::sun::star::uno::Any& _rValue )
        {
            m_aValues.push_back( ::com::sun::star::beans::PropertyValue(
                _rName, -1, _rValue, ::com::sun::star::beans::PropertyState_DIRECT_VALUE ) );
        }

        inline void implPushBackGenericPropertyValue(const ::com::sun::star::beans::PropertyValue& _rProp)
		{
            m_aGenericValues.push_back(_rProp);
        }
	};
	SV_DECL_IMPL_REF( OPropertyImport )

	//=====================================================================
	//= OPropertyElementsContext
	//=====================================================================
	/** helper class for importing the &lt;form:properties&gt; element
	*/
	class OPropertyElementsContext : public SvXMLImportContext
	{
	protected:
		OPropertyImportRef	m_xPropertyImporter;	// to add the properties

	public:
		OPropertyElementsContext(SvXMLImport& _rImport, sal_uInt16 _nPrefix, const ::rtl::OUString& _rName,
				const OPropertyImportRef& _rPropertyImporter);

		virtual SvXMLImportContext* CreateChildContext(
			sal_uInt16 _nPrefix, const ::rtl::OUString& _rLocalName,
			const ::com::sun::star::uno::Reference< ::com::sun::star::xml::sax::XAttributeList >& _rxAttrList);

#if OSL_DEBUG_LEVEL > 0
		virtual void StartElement(
			const ::com::sun::star::uno::Reference< ::com::sun::star::xml::sax::XAttributeList >& _rxAttrList);
		virtual void Characters(const ::rtl::OUString& _rChars);
#endif
	};

	//=====================================================================
	//= OSinglePropertyContext
	//=====================================================================
	/** helper class for importing a single &lt;form:property&gt; element
	*/
	class OSinglePropertyContext : public SvXMLImportContext
	{
		OPropertyImportRef			m_xPropertyImporter;	// to add the properties

	public:
		OSinglePropertyContext(SvXMLImport& _rImport, sal_uInt16 _nPrefix, const ::rtl::OUString& _rName,
				const OPropertyImportRef& _rPropertyImporter);

		virtual SvXMLImportContext* CreateChildContext(
			sal_uInt16 _nPrefix, const ::rtl::OUString& _rLocalName,
			const ::com::sun::star::uno::Reference< ::com::sun::star::xml::sax::XAttributeList >& _rxAttrList);

		virtual void StartElement(
			const ::com::sun::star::uno::Reference< ::com::sun::star::xml::sax::XAttributeList >& _rxAttrList);
	};

	//=====================================================================
	//= OListPropertyContext
	//=====================================================================
    class OListPropertyContext : public SvXMLImportContext
    {
		OPropertyImportRef                  m_xPropertyImporter;
        ::rtl::OUString                     m_sPropertyName;
        ::rtl::OUString                     m_sPropertyType;
        ::std::vector< ::rtl::OUString >    m_aListValues;

	public:
		OListPropertyContext( SvXMLImport& _rImport, sal_uInt16 _nPrefix, const ::rtl::OUString& _rName,
				const OPropertyImportRef& _rPropertyImporter );

		virtual void StartElement(
			const ::com::sun::star::uno::Reference< ::com::sun::star::xml::sax::XAttributeList >& _rxAttrList );

        virtual void EndElement();

        virtual SvXMLImportContext* CreateChildContext(
			sal_uInt16 _nPrefix, const ::rtl::OUString& _rLocalName,
			const ::com::sun::star::uno::Reference< ::com::sun::star::xml::sax::XAttributeList >& _rxAttrList);
    };

	//=====================================================================
	//= OListValueContext
	//=====================================================================
    class OListValueContext : public SvXMLImportContext
    {
        ::rtl::OUString& m_rListValueHolder;

	public:
		OListValueContext( SvXMLImport& _rImport, sal_uInt16 _nPrefix, const ::rtl::OUString& _rName,
            ::rtl::OUString& _rListValueHolder );

		virtual void StartElement(
			const ::com::sun::star::uno::Reference< ::com::sun::star::xml::sax::XAttributeList >& _rxAttrList );
    };

//.........................................................................
}	// namespace xmloff
//.........................................................................

#endif // _XMLOFF_FORMS_PROPERTYIMPORT_HXX_