Quelle Metadatable.hxx Sprache: C

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#ifndef INCLUDED_SFX2_METADATABLE_HXX
#define INCLUDED_SFX2_METADATABLE_HXX

#include <sal/config.h>

#include <sfx2/dllapi.h>

#include <cppuhelper/implbase.hxx>
#include <com/sun/star/rdf/XMetadatable.hpp>

#include <memory>

namespace com::sun::star {
 namespace frame { class XModel; }
}

namespace sfx2 {
 class IXmlIdRegistry;
}

namespace sfx2 {

class XmlIdRegistry;
class MetadatableUndo;

// XML ID handling ---------------------------------------------------

/// create a sfx2::XmlIdRegistryDocument or a sfx2::XmlIdRegistryClipboard
SFX2_DLLPUBLIC ::sfx2::IXmlIdRegistry *
createXmlIdRegistry(const bool i_DocIsClipboard);

/** base class for core objects that may have xml:id.

 The interface of this class consists of 3 parts:
 <ul><li>implementations that are used by the MetadatableMixin
 below</li>
 <li>hooks to be called by the sw core whenever actions that are
 relevant to the uniqueness of xml:ids are taken (copying,
 splitting, merging, deletion, undo, etc.)</li>
 <li>abstract methods that are called by the implementation of the
 previous hooks</li></ul>
 
*/
class SFX2_DLLPUBLIC SAL_LOPLUGIN_ANNOTATE("crosscast") Metadatable
{
public:
 Metadatable() : m_pReg(nullptr) {}

 // destructor calls RemoveMetadataReference
 virtual ~Metadatable();

 // for MetadatableMixin ----------------------------------------------

 css::beans::StringPair GetMetadataReference() const;
 void SetMetadataReference( const css::beans::StringPair & i_rReference);
 void EnsureMetadataReference();

 // hooks -------------------------------------------------------------

 // called from dtor!
 void RemoveMetadataReference();

 /** register this as a copy of i_rSource */
 void RegisterAsCopyOf(Metadatable const & i_rSource,
 const bool i_bCopyPrecedesSource = false);

 /** create an Undo Metadatable, which remembers this' reference */
 std::shared_ptr<MetadatableUndo> CreateUndo() const;
 std::shared_ptr<MetadatableUndo> CreateUndoForDelete();

 /** restore this from Undo Metadatable */
 void RestoreMetadata(std::shared_ptr<MetadatableUndo> const& i_pUndo);

 /** merge this and i_rOther into this */
 void JoinMetadatable(Metadatable const & i_rOther,
 const bool i_isMergedEmpty, const bool i_isOtherEmpty);

 // abstract methods --------------------------------------------------

 /** get the registry from the SwDoc */
 virtual ::sfx2::IXmlIdRegistry& GetRegistry() = 0;

 /** is this in a clipboard document? */
 virtual bool IsInClipboard() const = 0;

 /** is this in undo array? */
 virtual bool IsInUndo() const = 0;

 /** which stream is this in? true: content.xml; false: styles.xml */
 virtual bool IsInContent() const = 0;

 /** create XMetadatable from this.
 note: if IsInUndo or IsInClipboard return true,
 MakeUnoObject must not be called!
 */
 virtual css::uno::Reference< css::rdf::XMetadatable > MakeUnoObject() = 0;

private:
 Metadatable(const Metadatable&) = delete;
 Metadatable& operator=(const Metadatable&) = delete;

 friend class MetadatableClipboard;
 friend class MetadatableUndo;

 // note that Reg may be a XmlIdRegistryDocument or a XmlIdRegistryClipboard
 XmlIdRegistry* m_pReg; // null => no XmlId
};

/** base class for UNO objects that implement XMetadatable.

 An instance of this base class is associated with an instance of
 Metadatable.
*/
class SFX2_DLLPUBLIC MetadatableMixin :
 public cppu::WeakImplHelper<css::rdf::XMetadatable>
{

public:
 MetadatableMixin() {};

 // css::rdf::XNode:
 virtual OUString SAL_CALL getStringValue() override;

 // css::rdf::XURI:
 virtual OUString SAL_CALL getLocalName() override;
 virtual OUString SAL_CALL getNamespace() override;

 // css::rdf::XMetadatable:
 virtual css::beans::StringPair SAL_CALL getMetadataReference() override;
 virtual void SAL_CALL setMetadataReference(
 const css::beans::StringPair & i_rReference) override;
 virtual void SAL_CALL ensureMetadataReference() override;

protected:
 /// get the core object corresponding to this UNO object.
 virtual Metadatable * GetCoreObject() = 0;
 /// get the XModel for the document
 virtual css::uno::Reference< css::frame::XModel >
 GetModel() = 0;

};

} // namespace sfx2

#endif // INCLUDED_SFX2_METADATABLE_HXX

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