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Diffstat (limited to 'sfx2/source/doc/Metadatable.cxx')
| -rw-r--r-- | sfx2/source/doc/Metadatable.cxx | 1602 |
1 files changed, 1602 insertions, 0 deletions
diff --git a/sfx2/source/doc/Metadatable.cxx b/sfx2/source/doc/Metadatable.cxx new file mode 100644 index 000000000..1906967ca --- /dev/null +++ b/sfx2/source/doc/Metadatable.cxx @@ -0,0 +1,1602 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file 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 . + */ + +#include <sal/config.h> +#include <sal/log.hxx> + +#include <osl/diagnose.h> +#include <sfx2/Metadatable.hxx> +#include <sfx2/XmlIdRegistry.hxx> + +#include <vcl/svapp.hxx> +#include <com/sun/star/frame/XModel.hpp> +#include <com/sun/star/lang/IllegalArgumentException.hpp> +#include <comphelper/random.hxx> +#include <tools/diagnose_ex.h> + +#include <algorithm> +#include <memory> +#include <string_view> +#include <unordered_map> +#if OSL_DEBUG_LEVEL > 0 +#include <typeinfo> +#endif + + +/** XML ID handling. + + There is an abstract base class <type>XmlIdRegistry</type>, with + 2 subclasses <type>XmlIdRegistryDocument</type> for "normal" documents, + and <type>XmlIdRegistryClipboard</type> for clipboard documents. + These classes are responsible for managing XML IDs for all elements + of the model. Only the implementation of the <type>Metadatable</type> + base class needs to know the registries, so they are not in the header. + + The handling of XML IDs differs between clipboard and non-clipboard + documents in several aspects. Most importantly, non-clipboard documents + can have several elements associated with one XML ID. + This is necessary because of the weird undo implementation: + deleting a text node moves the deleted node to the undo array, but + executing undo will then create a <em>copy</em> of that node in the + document array. These 2 nodes must have the same XML ID, because + we cannot know whether the user will do a redo next, or something else. + + Because we need to have a mechanism for several objects per XML ID anyway, + we use that also to enable some usability features: + The document registry has a list of Metadatables per XML ID. + This list is sorted by priority, i.e., the first element has highest + priority. When inserting copies, care must be taken that they are inserted + at the right position: either before or after the source. + This is done by <method>Metadatable::RegisterAsCopyOf</method>. + When a text node is split, then both resulting text nodes are inserted + into the list. If the user then deletes one text node, the other one + will have the XML ID. + Also, when a Metadatable is copied to the clipboard and then pasted, + the copy is inserted into the list. If the user then deletes the source, + the XML ID is not lost. + The goal is that it should be hard to lose an XML ID by accident, which + is especially important as long as we do not have an UI that displays them. + + There are two subclasses of <type>Metadatable</type>: + <ul><li><type>MetadatableClipboard</type>: for copies in the clipboard</li> + <li><type>MetadatableUndo</type>: for undo, because a Metadatable + may be destroyed on delete and a new one created on undo.</li></ul> + These serve only to track the position in an XML ID list in a document + registry, so that future actions can insert objects at the right position. + Unfortunately, inserting dummy objects seems to be necessary: + <ul><li>it is not sufficient to just remember the saved id, because then + the relative priorities might change when executing the undo</li> + <li>it is not sufficient to record the position as an integer, because + if we delete a text node and then undo, the node will be copied(!), + and we will have one more node in the list.<li> + <li>it is not sufficient to record the pointer of the previous/next + Metadatable, because if we delete a text node, undo, and then + do something to clear the redo array, the original text node is + destroyed, and is replaced by the copy created by undo</li></ul> + + If content from a non-clipboard document is copied into a clipboard + document, a dummy <type>MetadatableClipboard</type> is inserted into the + non-clipboard document registry in order to track the position of the + source element. When the clipboard content is pasted back into the source + document, this dummy object is used to associate the pasted element with + that same XML ID. + + If a <type>Metadatable</type> is deleted or merged, + <method>Metadatable::CreateUndo</method> is called, and returns a + <type>MetadatableUndo<type> instance, which can be used to undo the action + by passing it to <method>Metadatable::RestoreMetadata</method>. + + */ + + +using namespace ::com::sun::star; + +using ::sfx2::isValidXmlId; + + +namespace sfx2 { + +constexpr OUStringLiteral s_content = u"content.xml"; +constexpr OUStringLiteral s_styles = u"styles.xml"; + +static bool isContentFile(std::u16string_view i_rPath) +{ + return i_rPath == s_content; +} + +static bool isStylesFile (std::u16string_view i_rPath) +{ + return i_rPath == s_styles; +} + + +// XML ID handling --------------------------------------------------- + +/** handles registration of XMetadatable. + + This class is responsible for guaranteeing that XMetadatable objects + always have XML IDs that are unique within a stream. + + This is an abstract base class; see subclasses XmlIdRegistryDocument and + XmlIdRegistryClipboard. + + @see SwDoc::GetXmlIdRegistry + @see SwDocShell::GetXmlIdRegistry + */ +class XmlIdRegistry : public sfx2::IXmlIdRegistry +{ + +public: + XmlIdRegistry(); + + /** get the ODF element with the given metadata reference. */ + virtual css::uno::Reference< css::rdf::XMetadatable > + GetElementByMetadataReference( + const css::beans::StringPair & i_rReference) const + override; + + /** register an ODF element at a newly generated, unique metadata reference. + + <p> + Find a fresh XML ID, and register it for the element. + The generated ID does not occur in any stream of the document. + </p> + */ + virtual void RegisterMetadatableAndCreateID(Metadatable& i_xObject) = 0; + + /** try to register an ODF element at a given XML ID, or update its + registration to a different XML ID. + + <p> + If the given new metadata reference is not already occupied in the + document, unregister the element at its old metadata reference if + it has one, and register the new metadata reference for the element. + Note that this method only ensures that XML IDs are unique per stream, + so using the same XML ID in both content.xml and styles.xml is allowed. + </p> + + @returns + true iff the element has successfully been registered + */ + virtual bool TryRegisterMetadatable(Metadatable& i_xObject, + OUString const& i_rStreamName, OUString const& i_rIdref) + = 0; + + /** unregister an ODF element. + + <p> + Unregister the element at its metadata reference. + Does not remove the metadata reference from the element. + </p> + + @see RemoveXmlIdForElement + */ + virtual void UnregisterMetadatable(Metadatable const&) = 0; + + /** get the metadata reference for the given element. */ + css::beans::StringPair + GetXmlIdForElement(Metadatable const&) const; + + /** remove the metadata reference for the given element. */ + virtual void RemoveXmlIdForElement(Metadatable const&) = 0; + +protected: + + virtual bool LookupXmlId(const Metadatable& i_xObject, + OUString & o_rStream, OUString & o_rIdref) const = 0; + + virtual Metadatable* LookupElement(const OUString & i_rStreamName, + const OUString & i_rIdref) const = 0; +}; + +// XmlIdRegistryDocument --------------------------------------------- + +namespace { + +/** non-clipboard documents */ +class XmlIdRegistryDocument : public XmlIdRegistry +{ + +public: + XmlIdRegistryDocument(); + + virtual ~XmlIdRegistryDocument() override; + + virtual void RegisterMetadatableAndCreateID(Metadatable& i_xObject) override; + + virtual bool TryRegisterMetadatable(Metadatable& i_xObject, + OUString const& i_rStreamName, OUString const& i_rIdref) override; + + virtual void UnregisterMetadatable(Metadatable const&) override; + + virtual void RemoveXmlIdForElement(Metadatable const&) override; + + /** register i_rCopy as a copy of i_rSource, + with precedence iff i_bCopyPrecedesSource is true */ + void RegisterCopy(Metadatable const& i_rSource, Metadatable & i_rCopy, + const bool i_bCopyPrecedesSource); + + /** create a Undo Metadatable for i_rObject. */ + static std::shared_ptr<MetadatableUndo> CreateUndo( + Metadatable const& i_rObject); + + /** merge i_rMerged and i_rOther into i_rMerged. */ + void JoinMetadatables(Metadatable & i_rMerged, Metadatable const& i_rOther); + + // unfortunately public, Metadatable::RegisterAsCopyOf needs this + virtual bool LookupXmlId(const Metadatable& i_xObject, + OUString & o_rStream, OUString & o_rIdref) const override; + +private: + + virtual Metadatable* LookupElement(const OUString & i_rStreamName, + const OUString & i_rIdref) const override; + + struct XmlIdRegistry_Impl; + ::std::unique_ptr<XmlIdRegistry_Impl> m_pImpl; +}; + +} + +// MetadatableUndo --------------------------------------------------- + +/** the horrible Undo Metadatable: is inserted into lists to track position */ +class MetadatableUndo : public Metadatable +{ + /// as determined by the stream of the source in original document + const bool m_isInContent; +public: + explicit MetadatableUndo(const bool i_isInContent) + : m_isInContent(i_isInContent) { } + virtual ::sfx2::XmlIdRegistry& GetRegistry() override + { + // N.B. for Undo, m_pReg is initialized by registering this as copy in + // CreateUndo; it is never cleared + OSL_ENSURE(m_pReg, "no m_pReg in MetadatableUndo ?"); + return *m_pReg; + } + virtual bool IsInClipboard() const override { return false; } + virtual bool IsInUndo() const override { return true; } + virtual bool IsInContent() const override { return m_isInContent; } + virtual css::uno::Reference< css::rdf::XMetadatable > MakeUnoObject() override + { OSL_FAIL("MetadatableUndo::MakeUnoObject"); throw; } +}; + +// MetadatableClipboard ---------------------------------------------- + +/** the horrible Clipboard Metadatable: inserted into lists to track position */ +class MetadatableClipboard : public Metadatable +{ + /// as determined by the stream of the source in original document + const bool m_isInContent; +public: + explicit MetadatableClipboard(const bool i_isInContent) + : m_isInContent(i_isInContent) { } + virtual ::sfx2::XmlIdRegistry& GetRegistry() override + { + // N.B. for Clipboard, m_pReg is initialized by registering this as copy in + // RegisterAsCopyOf; it is only cleared by OriginNoLongerInBusinessAnymore + assert(m_pReg && "no m_pReg in MetadatableClipboard ?"); + return *m_pReg; + } + virtual bool IsInClipboard() const override { return true; } + virtual bool IsInUndo() const override { return false; } + virtual bool IsInContent() const override { return m_isInContent; } + virtual css::uno::Reference< css::rdf::XMetadatable > MakeUnoObject() override + { OSL_FAIL("MetadatableClipboard::MakeUnoObject"); throw; } + void OriginNoLongerInBusinessAnymore() { m_pReg = nullptr; } +}; + +// XmlIdRegistryClipboard -------------------------------------------- + +namespace { + +class XmlIdRegistryClipboard : public XmlIdRegistry +{ + +public: + XmlIdRegistryClipboard(); + + virtual void RegisterMetadatableAndCreateID(Metadatable& i_xObject) override; + + virtual bool TryRegisterMetadatable(Metadatable& i_xObject, + OUString const& i_rStreamName, OUString const& i_rIdref) override; + + virtual void UnregisterMetadatable(Metadatable const&) override; + + virtual void RemoveXmlIdForElement(Metadatable const&) override; + + /** register i_rCopy as a copy of i_rSource */ + MetadatableClipboard & RegisterCopyClipboard(Metadatable & i_rCopy, + beans::StringPair const & i_rReference, + const bool i_isLatent); + + /** get the Metadatable that links i_rObject to its origin registry */ + MetadatableClipboard const* SourceLink(Metadatable const& i_rObject); + +private: + virtual bool LookupXmlId(const Metadatable& i_xObject, + OUString & o_rStream, OUString & o_rIdref) const override; + + virtual Metadatable* LookupElement(const OUString & i_rStreamName, + const OUString & i_rIdref) const override; + + /** create a Clipboard Metadatable for i_rObject. */ + static std::shared_ptr<MetadatableClipboard> CreateClipboard( + const bool i_isInContent); + + struct XmlIdRegistry_Impl; + ::std::unique_ptr<XmlIdRegistry_Impl> m_pImpl; +}; + +} + +// XmlIdRegistry + +::sfx2::IXmlIdRegistry * createXmlIdRegistry(const bool i_DocIsClipboard) +{ + return i_DocIsClipboard + ? static_cast<XmlIdRegistry*>( new XmlIdRegistryClipboard ) + : static_cast<XmlIdRegistry*>( new XmlIdRegistryDocument ); +} + +XmlIdRegistry::XmlIdRegistry() +{ +} + +css::uno::Reference< css::rdf::XMetadatable > +XmlIdRegistry::GetElementByMetadataReference( + const beans::StringPair & i_rReference) const +{ + Metadatable* pObject( LookupElement(i_rReference.First, + i_rReference.Second) ); + return pObject ? pObject->MakeUnoObject() : nullptr; +} + +beans::StringPair +XmlIdRegistry::GetXmlIdForElement(const Metadatable& i_rObject) const +{ + OUString path; + OUString idref; + if (LookupXmlId(i_rObject, path, idref)) + { + if (LookupElement(path, idref) == &i_rObject) + { + return beans::StringPair(path, idref); + } + } + return beans::StringPair(); +} + + +/// generate unique xml:id +template< typename T > +static OUString create_id(const + std::unordered_map< OUString, T > & i_rXmlIdMap) +{ + static bool bHack = (getenv("LIBO_ONEWAY_STABLE_ODF_EXPORT") != nullptr); + static const char prefix[] = "id"; // prefix for generated xml:id + typename std::unordered_map< OUString, T > + ::const_iterator iter; + OUString id; + + if (bHack) + { + static sal_Int64 nIdCounter = SAL_CONST_INT64(4000000000); + do + { + id = prefix + OUString::number(nIdCounter++); + iter = i_rXmlIdMap.find(id); + } + while (iter != i_rXmlIdMap.end()); + } + else + { + do + { + unsigned int const n(comphelper::rng::uniform_uint_distribution(0, + std::numeric_limits<unsigned int>::max())); + id = prefix + OUString::number(n); + iter = i_rXmlIdMap.find(id); + } + while (iter != i_rXmlIdMap.end()); + } + return id; +} + + +// Document XML ID Registry (_Impl) + +/// element list +typedef ::std::vector< Metadatable* > XmlIdVector_t; + +/// Idref -> (content.xml element list, styles.xml element list) +typedef std::unordered_map< OUString, + ::std::pair< XmlIdVector_t, XmlIdVector_t > > XmlIdMap_t; + +namespace { + +/// pointer hash template +template<typename T> struct PtrHash +{ + size_t operator() (T const * i_pT) const + { + return reinterpret_cast<size_t>(i_pT); + } +}; + +} + +/// element -> (stream name, idref) +typedef std::unordered_map< const Metadatable*, + ::std::pair< OUString, OUString>, PtrHash<Metadatable> > + XmlIdReverseMap_t; + +struct XmlIdRegistryDocument::XmlIdRegistry_Impl +{ + XmlIdRegistry_Impl() {} + + bool TryInsertMetadatable(Metadatable& i_xObject, + std::u16string_view i_rStream, const OUString & i_rIdref); + + bool LookupXmlId(const Metadatable& i_xObject, + OUString & o_rStream, OUString & o_rIdref) const; + + Metadatable* LookupElement(std::u16string_view i_rStreamName, + const OUString & i_rIdref) const; + + const XmlIdVector_t * LookupElementVector( + std::u16string_view i_rStreamName, + const OUString & i_rIdref) const; + + XmlIdVector_t * LookupElementVector( + std::u16string_view i_rStreamName, + const OUString & i_rIdref) + { + return const_cast<XmlIdVector_t*>( + const_cast<const XmlIdRegistry_Impl*>(this) + ->LookupElementVector(i_rStreamName, i_rIdref)); + } + + XmlIdMap_t m_XmlIdMap; + XmlIdReverseMap_t m_XmlIdReverseMap; +}; + + +static void +rmIter(XmlIdMap_t & i_rXmlIdMap, XmlIdMap_t::iterator const& i_rIter, + std::u16string_view i_rStream, Metadatable const& i_rObject) +{ + if (i_rIter != i_rXmlIdMap.end()) + { + XmlIdVector_t & rVector( isContentFile(i_rStream) + ? i_rIter->second.first : i_rIter->second.second ); + rVector.erase(std::remove(rVector.begin(), rVector.end(), &const_cast<Metadatable&>(i_rObject))); + if (i_rIter->second.first.empty() && i_rIter->second.second.empty()) + { + i_rXmlIdMap.erase(i_rIter); + } + } +} + + +const XmlIdVector_t * +XmlIdRegistryDocument::XmlIdRegistry_Impl::LookupElementVector( + std::u16string_view i_rStreamName, + const OUString & i_rIdref) const +{ + const XmlIdMap_t::const_iterator iter( m_XmlIdMap.find(i_rIdref) ); + if (iter != m_XmlIdMap.end()) + { + OSL_ENSURE(!iter->second.first.empty() || !iter->second.second.empty(), + "null entry in m_XmlIdMap"); + return (isContentFile(i_rStreamName)) + ? &iter->second.first + : &iter->second.second; + } + else + { + return nullptr; + } +} + +Metadatable* +XmlIdRegistryDocument::XmlIdRegistry_Impl::LookupElement( + std::u16string_view i_rStreamName, + const OUString & i_rIdref) const +{ + if (!isValidXmlId(i_rStreamName, i_rIdref)) + { + throw lang::IllegalArgumentException("illegal XmlId", nullptr, 0); + } + + const XmlIdVector_t * pList( LookupElementVector(i_rStreamName, i_rIdref) ); + if (pList) + { + const XmlIdVector_t::const_iterator iter( + ::std::find_if(pList->begin(), pList->end(), + [](Metadatable* item)->bool { + return !(item->IsInUndo() || item->IsInClipboard()); + } ) ) ; + if (iter != pList->end()) + { + return *iter; + } + } + return nullptr; +} + +bool +XmlIdRegistryDocument::XmlIdRegistry_Impl::LookupXmlId( + const Metadatable& i_rObject, + OUString & o_rStream, OUString & o_rIdref) const +{ + const XmlIdReverseMap_t::const_iterator iter( + m_XmlIdReverseMap.find(&i_rObject) ); + if (iter != m_XmlIdReverseMap.end()) + { + OSL_ENSURE(!iter->second.first.isEmpty(), + "null stream in m_XmlIdReverseMap"); + OSL_ENSURE(!iter->second.second.isEmpty(), + "null id in m_XmlIdReverseMap"); + o_rStream = iter->second.first; + o_rIdref = iter->second.second; + return true; + } + else + { + return false; + } +} + +bool +XmlIdRegistryDocument::XmlIdRegistry_Impl::TryInsertMetadatable( + Metadatable & i_rObject, + std::u16string_view i_rStreamName, const OUString & i_rIdref) +{ + const bool bContent( isContentFile(i_rStreamName) ); + OSL_ENSURE(isContentFile(i_rStreamName) || isStylesFile(i_rStreamName), + "invalid stream"); + + XmlIdVector_t * pList( LookupElementVector(i_rStreamName, i_rIdref) ); + if (pList) + { + if (pList->empty()) + { + pList->push_back( &i_rObject ); + return true; + } + else + { + // this is only called from TryRegister now, so check + // if all elements in the list are deleted (in undo) or + // placeholders, then "steal" the id from them + if ( std::none_of(pList->begin(), pList->end(), + [](Metadatable* item)->bool { + return !(item->IsInUndo() || item->IsInClipboard()); + } ) ) + { + pList->insert(pList->begin(), &i_rObject ); + return true; + } + else + { + return false; + } + } + } + else + { + m_XmlIdMap.insert(::std::make_pair(i_rIdref, bContent + ? ::std::make_pair( XmlIdVector_t( 1, &i_rObject ), XmlIdVector_t() ) + : ::std::make_pair( XmlIdVector_t(), XmlIdVector_t( 1, &i_rObject ) ))); + return true; + } +} + + +// Document XML ID Registry + + +XmlIdRegistryDocument::XmlIdRegistryDocument() + : m_pImpl( new XmlIdRegistry_Impl ) +{ +} + +static void +removeLink(Metadatable* i_pObject) +{ + OSL_ENSURE(i_pObject, "null in list ???"); + if (!i_pObject) return; + if (i_pObject->IsInClipboard()) + { + MetadatableClipboard* pLink( + dynamic_cast<MetadatableClipboard*>( i_pObject ) ); + OSL_ENSURE(pLink, "IsInClipboard, but no MetadatableClipboard ?"); + if (pLink) + { + pLink->OriginNoLongerInBusinessAnymore(); + } + } +} + +XmlIdRegistryDocument::~XmlIdRegistryDocument() +{ + // notify all list elements that are actually in the clipboard + for (const auto& aXmlId : m_pImpl->m_XmlIdMap) { + for (auto aLink : aXmlId.second.first) + removeLink(aLink); + for (auto aLink : aXmlId.second.second) + removeLink(aLink); + } +} + +bool +XmlIdRegistryDocument::LookupXmlId( + const Metadatable& i_rObject, + OUString & o_rStream, OUString & o_rIdref) const +{ + return m_pImpl->LookupXmlId(i_rObject, o_rStream, o_rIdref); +} + +Metadatable* +XmlIdRegistryDocument::LookupElement( + const OUString & i_rStreamName, + const OUString & i_rIdref) const +{ + return m_pImpl->LookupElement(i_rStreamName, i_rIdref); +} + +bool +XmlIdRegistryDocument::TryRegisterMetadatable(Metadatable & i_rObject, + OUString const& i_rStreamName, OUString const& i_rIdref) +{ + SAL_INFO("sfx", "TryRegisterMetadatable: " << &i_rObject << " (" << i_rStreamName << "#" << i_rIdref << ")"); + + OSL_ENSURE(!dynamic_cast<MetadatableUndo*>(&i_rObject), + "TryRegisterMetadatable called for MetadatableUndo?"); + OSL_ENSURE(!dynamic_cast<MetadatableClipboard*>(&i_rObject), + "TryRegisterMetadatable called for MetadatableClipboard?"); + + if (!isValidXmlId(i_rStreamName, i_rIdref)) + { + throw lang::IllegalArgumentException("illegal XmlId", nullptr, 0); + } + if (i_rObject.IsInContent() + ? !isContentFile(i_rStreamName) + : !isStylesFile(i_rStreamName)) + { + throw lang::IllegalArgumentException("illegal XmlId: wrong stream", nullptr, 0); + } + + OUString old_path; + OUString old_idref; + m_pImpl->LookupXmlId(i_rObject, old_path, old_idref); + if (old_path == i_rStreamName && old_idref == i_rIdref) + { + return (m_pImpl->LookupElement(old_path, old_idref) == &i_rObject); + } + XmlIdMap_t::iterator old_id( m_pImpl->m_XmlIdMap.end() ); + if (!old_idref.isEmpty()) + { + old_id = m_pImpl->m_XmlIdMap.find(old_idref); + OSL_ENSURE(old_id != m_pImpl->m_XmlIdMap.end(), "old id not found"); + } + if (m_pImpl->TryInsertMetadatable(i_rObject, i_rStreamName, i_rIdref)) + { + rmIter(m_pImpl->m_XmlIdMap, old_id, old_path, i_rObject); + m_pImpl->m_XmlIdReverseMap[&i_rObject] = + ::std::make_pair(i_rStreamName, i_rIdref); + return true; + } + else + { + return false; + } +} + +void +XmlIdRegistryDocument::RegisterMetadatableAndCreateID(Metadatable & i_rObject) +{ + SAL_INFO("sfx", "RegisterMetadatableAndCreateID: " << &i_rObject); + + OSL_ENSURE(!dynamic_cast<MetadatableUndo*>(&i_rObject), + "RegisterMetadatableAndCreateID called for MetadatableUndo?"); + OSL_ENSURE(!dynamic_cast<MetadatableClipboard*>(&i_rObject), + "RegisterMetadatableAndCreateID called for MetadatableClipboard?"); + + const bool isInContent( i_rObject.IsInContent() ); + const OUString stream( + isInContent ? OUString(s_content) : OUString(s_styles) ); + // check if we have a latent xmlid, and if yes, remove it + OUString old_path; + OUString old_idref; + m_pImpl->LookupXmlId(i_rObject, old_path, old_idref); + + XmlIdMap_t::iterator old_id( m_pImpl->m_XmlIdMap.end() ); + if (!old_idref.isEmpty()) + { + old_id = m_pImpl->m_XmlIdMap.find(old_idref); + OSL_ENSURE(old_id != m_pImpl->m_XmlIdMap.end(), "old id not found"); + if (m_pImpl->LookupElement(old_path, old_idref) == &i_rObject) + { + return; + } + else + { + // remove latent xmlid + rmIter(m_pImpl->m_XmlIdMap, old_id, old_path, i_rObject); + } + } + + // create id + const OUString id( create_id(m_pImpl->m_XmlIdMap) ); + OSL_ENSURE(m_pImpl->m_XmlIdMap.find(id) == m_pImpl->m_XmlIdMap.end(), + "created id is in use"); + m_pImpl->m_XmlIdMap.insert(::std::make_pair(id, isInContent + ? ::std::make_pair( XmlIdVector_t( 1, &i_rObject ), XmlIdVector_t() ) + : ::std::make_pair( XmlIdVector_t(), XmlIdVector_t( 1, &i_rObject ) ))); + m_pImpl->m_XmlIdReverseMap[&i_rObject] = ::std::make_pair(stream, id); +} + +void XmlIdRegistryDocument::UnregisterMetadatable(const Metadatable& i_rObject) +{ + SAL_INFO("sfx", "UnregisterMetadatable: " << &i_rObject); + + OUString path; + OUString idref; + if (!m_pImpl->LookupXmlId(i_rObject, path, idref)) + { + OSL_FAIL("unregister: no xml id?"); + return; + } + const XmlIdMap_t::iterator iter( m_pImpl->m_XmlIdMap.find(idref) ); + if (iter != m_pImpl->m_XmlIdMap.end()) + { + rmIter(m_pImpl->m_XmlIdMap, iter, path, i_rObject); + } +} + +void XmlIdRegistryDocument::RemoveXmlIdForElement(const Metadatable& i_rObject) +{ + SAL_INFO("sfx", "RemoveXmlIdForElement: " << &i_rObject); + + const XmlIdReverseMap_t::iterator iter( + m_pImpl->m_XmlIdReverseMap.find(&i_rObject) ); + if (iter != m_pImpl->m_XmlIdReverseMap.end()) + { + OSL_ENSURE(!iter->second.second.isEmpty(), + "null id in m_XmlIdReverseMap"); + m_pImpl->m_XmlIdReverseMap.erase(iter); + } +} + + +void XmlIdRegistryDocument::RegisterCopy(Metadatable const& i_rSource, + Metadatable & i_rCopy, const bool i_bCopyPrecedesSource) +{ + SAL_INFO("sfx", "RegisterCopy: " << &i_rSource << " -> " << &i_rCopy << " (" << i_bCopyPrecedesSource << ")"); + + // potential sources: clipboard, undo array, splitNode + // assumption: stream change can only happen via clipboard, and is handled + // by Metadatable::RegisterAsCopyOf + OSL_ENSURE(i_rSource.IsInUndo() || i_rCopy.IsInUndo() || + (i_rSource.IsInContent() == i_rCopy.IsInContent()), + "RegisterCopy: not in same stream?"); + + OUString path; + OUString idref; + if (!m_pImpl->LookupXmlId( i_rSource, path, idref )) + { + OSL_FAIL("no xml id?"); + return; + } + XmlIdVector_t * pList ( m_pImpl->LookupElementVector(path, idref) ); + OSL_ENSURE( ::std::find( pList->begin(), pList->end(), &i_rCopy ) + == pList->end(), "copy already registered???"); + XmlIdVector_t::iterator srcpos( + ::std::find( pList->begin(), pList->end(), &i_rSource ) ); + OSL_ENSURE(srcpos != pList->end(), "source not in list???"); + if (srcpos == pList->end()) + { + return; + } + if (i_bCopyPrecedesSource) + { + pList->insert( srcpos, &i_rCopy ); + } + else + { + // for undo push_back does not work! must insert right after source + pList->insert( ++srcpos, &i_rCopy ); + } + m_pImpl->m_XmlIdReverseMap.insert(::std::make_pair(&i_rCopy, + ::std::make_pair(path, idref))); +} + +std::shared_ptr<MetadatableUndo> +XmlIdRegistryDocument::CreateUndo(Metadatable const& i_rObject) +{ + SAL_INFO("sfx", "CreateUndo: " << &i_rObject); + + return std::make_shared<MetadatableUndo>( + i_rObject.IsInContent() ); +} + +/* +i_rMerged is both a source and the target node of the merge +i_rOther is the other source, and will be deleted after the merge + +dimensions: none|latent|actual empty|nonempty +i_rMerged(1) i_rOther(2) result + *|empty *|empty => 1|2 (arbitrary) + *|empty *|nonempty => 2 + *|nonempty *|empty => 1 + none|nonempty none|nonempty => none + none|nonempty latent|nonempty => 2 +latent|nonempty none|nonempty => 1 +latent|nonempty latent|nonempty => 1|2 + *|nonempty actual|nonempty => 2 +actual|nonempty *|nonempty => 1 +actual|nonempty actual|nonempty => 1|2 +*/ +void +XmlIdRegistryDocument::JoinMetadatables( + Metadatable & i_rMerged, Metadatable const & i_rOther) +{ + SAL_INFO("sfx", "JoinMetadatables: " << &i_rMerged << " <- " << &i_rOther); + + bool mergedOwnsRef; + OUString path; + OUString idref; + if (m_pImpl->LookupXmlId(i_rMerged, path, idref)) + { + mergedOwnsRef = (m_pImpl->LookupElement(path, idref) == &i_rMerged); + } + else + { + OSL_FAIL("JoinMetadatables: no xmlid?"); + return; + } + if (!mergedOwnsRef) + { + i_rMerged.RemoveMetadataReference(); + i_rMerged.RegisterAsCopyOf(i_rOther, true); + return; + } + // other cases: merged has actual ref and is nonempty, + // other has latent/actual ref and is nonempty: other loses => nothing to do +} + + +// Clipboard XML ID Registry (_Impl) + +namespace { + +struct RMapEntry +{ + RMapEntry() {} + RMapEntry(OUString const& i_rStream, + OUString const& i_rXmlId, + std::shared_ptr<MetadatableClipboard> const& i_pLink + = std::shared_ptr<MetadatableClipboard>()) + : m_Stream(i_rStream), m_XmlId(i_rXmlId), m_xLink(i_pLink) + {} + OUString m_Stream; + OUString m_XmlId; + // this would have been an auto_ptr, if only that would have compiled... + std::shared_ptr<MetadatableClipboard> m_xLink; +}; + +} + +/// element -> (stream name, idref, source) +typedef std::unordered_map< const Metadatable*, + struct RMapEntry, + PtrHash<Metadatable> > + ClipboardXmlIdReverseMap_t; + +/// Idref -> (content.xml element, styles.xml element) +typedef std::unordered_map< OUString, + ::std::pair< Metadatable*, Metadatable* > > + ClipboardXmlIdMap_t; + +struct XmlIdRegistryClipboard::XmlIdRegistry_Impl +{ + XmlIdRegistry_Impl() {} + + bool TryInsertMetadatable(Metadatable& i_xObject, + std::u16string_view i_rStream, const OUString & i_rIdref); + + bool LookupXmlId(const Metadatable& i_xObject, + OUString & o_rStream, OUString & o_rIdref, + MetadatableClipboard const* &o_rpLink) const; + + Metadatable* LookupElement(std::u16string_view i_rStreamName, + const OUString & i_rIdref) const; + + Metadatable* const* LookupEntry(std::u16string_view i_rStreamName, + const OUString & i_rIdref) const; + + ClipboardXmlIdMap_t m_XmlIdMap; + ClipboardXmlIdReverseMap_t m_XmlIdReverseMap; +}; + + +static void +rmIter(ClipboardXmlIdMap_t & i_rXmlIdMap, + ClipboardXmlIdMap_t::iterator const& i_rIter, + std::u16string_view i_rStream, Metadatable const& i_rObject) +{ + if (i_rIter == i_rXmlIdMap.end()) + return; + + Metadatable *& rMeta = isContentFile(i_rStream) + ? i_rIter->second.first : i_rIter->second.second; + if (rMeta == &i_rObject) + { + rMeta = nullptr; + } + if (!i_rIter->second.first && !i_rIter->second.second) + { + i_rXmlIdMap.erase(i_rIter); + } +} + + +Metadatable* const* +XmlIdRegistryClipboard::XmlIdRegistry_Impl::LookupEntry( + std::u16string_view i_rStreamName, + const OUString & i_rIdref) const +{ + if (!isValidXmlId(i_rStreamName, i_rIdref)) + { + throw lang::IllegalArgumentException("illegal XmlId", nullptr, 0); + } + + const ClipboardXmlIdMap_t::const_iterator iter( m_XmlIdMap.find(i_rIdref) ); + if (iter != m_XmlIdMap.end()) + { + OSL_ENSURE(iter->second.first || iter->second.second, + "null entry in m_XmlIdMap"); + return (isContentFile(i_rStreamName)) + ? &iter->second.first + : &iter->second.second; + } + else + { + return nullptr; + } +} + +Metadatable* +XmlIdRegistryClipboard::XmlIdRegistry_Impl::LookupElement( + std::u16string_view i_rStreamName, + const OUString & i_rIdref) const +{ + Metadatable * const * ppEntry = LookupEntry(i_rStreamName, i_rIdref); + return ppEntry ? *ppEntry : nullptr; +} + +bool +XmlIdRegistryClipboard::XmlIdRegistry_Impl::LookupXmlId( + const Metadatable& i_rObject, + OUString & o_rStream, OUString & o_rIdref, + MetadatableClipboard const* &o_rpLink) const +{ + const ClipboardXmlIdReverseMap_t::const_iterator iter( + m_XmlIdReverseMap.find(&i_rObject) ); + if (iter != m_XmlIdReverseMap.end()) + { + OSL_ENSURE(!iter->second.m_Stream.isEmpty(), + "null stream in m_XmlIdReverseMap"); + OSL_ENSURE(!iter->second.m_XmlId.isEmpty(), + "null id in m_XmlIdReverseMap"); + o_rStream = iter->second.m_Stream; + o_rIdref = iter->second.m_XmlId; + o_rpLink = iter->second.m_xLink.get(); + return true; + } + else + { + return false; + } +} + +bool +XmlIdRegistryClipboard::XmlIdRegistry_Impl::TryInsertMetadatable( + Metadatable & i_rObject, + std::u16string_view i_rStreamName, const OUString & i_rIdref) +{ + bool bContent( isContentFile(i_rStreamName) ); + OSL_ENSURE(isContentFile(i_rStreamName) || isStylesFile(i_rStreamName), + "invalid stream"); + + Metadatable ** ppEntry = const_cast<Metadatable**>(LookupEntry(i_rStreamName, i_rIdref)); + if (ppEntry) + { + if (*ppEntry) + { + return false; + } + else + { + *ppEntry = &i_rObject; + return true; + } + } + else + { + m_XmlIdMap.insert(::std::make_pair(i_rIdref, bContent + ? ::std::make_pair( &i_rObject, static_cast<Metadatable*>(nullptr) ) + : ::std::make_pair( static_cast<Metadatable*>(nullptr), &i_rObject ))); + return true; + } +} + + +// Clipboard XML ID Registry + + +XmlIdRegistryClipboard::XmlIdRegistryClipboard() + : m_pImpl( new XmlIdRegistry_Impl ) +{ +} + +bool +XmlIdRegistryClipboard::LookupXmlId( + const Metadatable& i_rObject, + OUString & o_rStream, OUString & o_rIdref) const +{ + const MetadatableClipboard * pLink; + return m_pImpl->LookupXmlId(i_rObject, o_rStream, o_rIdref, pLink); +} + +Metadatable* +XmlIdRegistryClipboard::LookupElement( + const OUString & i_rStreamName, + const OUString & i_rIdref) const +{ + return m_pImpl->LookupElement(i_rStreamName, i_rIdref); +} + +bool +XmlIdRegistryClipboard::TryRegisterMetadatable(Metadatable & i_rObject, + OUString const& i_rStreamName, OUString const& i_rIdref) +{ + SAL_INFO("sfx", "TryRegisterMetadatable: " << &i_rObject << " (" << i_rStreamName << "#" << i_rIdref <<")"); + + OSL_ENSURE(!dynamic_cast<MetadatableUndo*>(&i_rObject), + "TryRegisterMetadatable called for MetadatableUndo?"); + OSL_ENSURE(!dynamic_cast<MetadatableClipboard*>(&i_rObject), + "TryRegisterMetadatable called for MetadatableClipboard?"); + + if (!isValidXmlId(i_rStreamName, i_rIdref)) + { + throw lang::IllegalArgumentException("illegal XmlId", nullptr, 0); + } + if (i_rObject.IsInContent() + ? !isContentFile(i_rStreamName) + : !isStylesFile(i_rStreamName)) + { + throw lang::IllegalArgumentException("illegal XmlId: wrong stream", nullptr, 0); + } + + OUString old_path; + OUString old_idref; + const MetadatableClipboard * pLink; + m_pImpl->LookupXmlId(i_rObject, old_path, old_idref, pLink); + if (old_path == i_rStreamName && old_idref == i_rIdref) + { + return (m_pImpl->LookupElement(old_path, old_idref) == &i_rObject); + } + ClipboardXmlIdMap_t::iterator old_id( m_pImpl->m_XmlIdMap.end() ); + if (!old_idref.isEmpty()) + { + old_id = m_pImpl->m_XmlIdMap.find(old_idref); + OSL_ENSURE(old_id != m_pImpl->m_XmlIdMap.end(), "old id not found"); + } + if (m_pImpl->TryInsertMetadatable(i_rObject, i_rStreamName, i_rIdref)) + { + rmIter(m_pImpl->m_XmlIdMap, old_id, old_path, i_rObject); + m_pImpl->m_XmlIdReverseMap[&i_rObject] = + RMapEntry(i_rStreamName, i_rIdref); + return true; + } + else + { + return false; + } +} + +void +XmlIdRegistryClipboard::RegisterMetadatableAndCreateID(Metadatable & i_rObject) +{ + SAL_INFO("sfx", "RegisterMetadatableAndCreateID: " << &i_rObject); + + OSL_ENSURE(!dynamic_cast<MetadatableUndo*>(&i_rObject), + "RegisterMetadatableAndCreateID called for MetadatableUndo?"); + OSL_ENSURE(!dynamic_cast<MetadatableClipboard*>(&i_rObject), + "RegisterMetadatableAndCreateID called for MetadatableClipboard?"); + + bool isInContent( i_rObject.IsInContent() ); + OUString stream( + isInContent ? OUString(s_content) : OUString(s_styles) ); + + OUString old_path; + OUString old_idref; + LookupXmlId(i_rObject, old_path, old_idref); + if (!old_idref.isEmpty() && + (m_pImpl->LookupElement(old_path, old_idref) == &i_rObject)) + { + return; + } + + // create id + const OUString id( create_id(m_pImpl->m_XmlIdMap) ); + OSL_ENSURE(m_pImpl->m_XmlIdMap.find(id) == m_pImpl->m_XmlIdMap.end(), + "created id is in use"); + m_pImpl->m_XmlIdMap.insert(::std::make_pair(id, isInContent + ? ::std::make_pair( &i_rObject, static_cast<Metadatable*>(nullptr) ) + : ::std::make_pair( static_cast<Metadatable*>(nullptr), &i_rObject ))); + // N.B.: if i_rObject had a latent XmlId, then we implicitly delete the + // MetadatableClipboard and thus the latent XmlId here + m_pImpl->m_XmlIdReverseMap[&i_rObject] = RMapEntry(stream, id); +} + +void XmlIdRegistryClipboard::UnregisterMetadatable(const Metadatable& i_rObject) +{ + SAL_INFO("sfx", "UnregisterMetadatable: " << &i_rObject); + + OUString path; + OUString idref; + const MetadatableClipboard * pLink; + if (!m_pImpl->LookupXmlId(i_rObject, path, idref, pLink)) + { + OSL_FAIL("unregister: no xml id?"); + return; + } + const ClipboardXmlIdMap_t::iterator iter( m_pImpl->m_XmlIdMap.find(idref) ); + if (iter != m_pImpl->m_XmlIdMap.end()) + { + rmIter(m_pImpl->m_XmlIdMap, iter, path, i_rObject); + } +} + + +void XmlIdRegistryClipboard::RemoveXmlIdForElement(const Metadatable& i_rObject) +{ + SAL_INFO("sfx", "RemoveXmlIdForElement: " << &i_rObject); + + ClipboardXmlIdReverseMap_t::iterator iter( + m_pImpl->m_XmlIdReverseMap.find(&i_rObject) ); + if (iter != m_pImpl->m_XmlIdReverseMap.end()) + { + OSL_ENSURE(!iter->second.m_XmlId.isEmpty(), + "null id in m_XmlIdReverseMap"); + m_pImpl->m_XmlIdReverseMap.erase(iter); + } +} + + +std::shared_ptr<MetadatableClipboard> +XmlIdRegistryClipboard::CreateClipboard(const bool i_isInContent) +{ + SAL_INFO("sfx", "CreateClipboard:"); + + return std::make_shared<MetadatableClipboard>( + i_isInContent ); +} + +MetadatableClipboard & +XmlIdRegistryClipboard::RegisterCopyClipboard(Metadatable & i_rCopy, + beans::StringPair const & i_rReference, + const bool i_isLatent) +{ + SAL_INFO("sfx", "RegisterCopyClipboard: " << &i_rCopy + << " -> (" << i_rReference.First << "#" << i_rReference.Second << ") (" << i_isLatent << ")"); + + // N.B.: when copying to the clipboard, the selection is always inserted + // into the body, even if the source is a header/footer! + // so we do not check whether the stream is right in this function + + if (!isValidXmlId(i_rReference.First, i_rReference.Second)) + { + throw lang::IllegalArgumentException("illegal XmlId", nullptr, 0); + } + + if (!i_isLatent) + { + // this should succeed assuming clipboard has a single source document + const bool success( m_pImpl->TryInsertMetadatable(i_rCopy, + i_rReference.First, i_rReference.Second) ); + OSL_ENSURE(success, "RegisterCopyClipboard: TryInsert failed?"); + } + const std::shared_ptr<MetadatableClipboard> xLink( + CreateClipboard( isContentFile(i_rReference.First)) ); + m_pImpl->m_XmlIdReverseMap.insert(::std::make_pair(&i_rCopy, + RMapEntry(i_rReference.First, i_rReference.Second, xLink))); + return *xLink; +} + +MetadatableClipboard const* +XmlIdRegistryClipboard::SourceLink(Metadatable const& i_rObject) +{ + OUString path; + OUString idref; + const MetadatableClipboard * pLink( nullptr ); + m_pImpl->LookupXmlId(i_rObject, path, idref, pLink); + return pLink; +} + + +// Metadatable mixin + + +Metadatable::~Metadatable() +{ + RemoveMetadataReference(); +} + +void Metadatable::RemoveMetadataReference() +{ + try + { + if (m_pReg) + { + m_pReg->UnregisterMetadatable( *this ); + m_pReg->RemoveXmlIdForElement( *this ); + m_pReg = nullptr; + } + } + catch (const uno::Exception &) + { + TOOLS_WARN_EXCEPTION( "sfx.doc", "Metadatable::RemoveMetadataReference"); + } +} + +// css::rdf::XMetadatable: +beans::StringPair +Metadatable::GetMetadataReference() const +{ + if (m_pReg) + { + return m_pReg->GetXmlIdForElement(*this); + } + return beans::StringPair(); +} + +void Metadatable::SetMetadataReference( const css::beans::StringPair & i_rReference) +{ + if (i_rReference.Second.isEmpty()) + { + RemoveMetadataReference(); + } + else + { + OUString streamName( i_rReference.First ); + if (streamName.isEmpty()) + { + // handle empty stream name as auto-detect. + // necessary for importing flat file format. + streamName = IsInContent() ? OUString(s_content) : OUString(s_styles); + } + XmlIdRegistry & rReg( dynamic_cast<XmlIdRegistry&>( GetRegistry() ) ); + if (!rReg.TryRegisterMetadatable(*this, streamName, i_rReference.Second)) + { + throw lang::IllegalArgumentException( + "Metadatable::SetMetadataReference: argument is invalid", /*this*/nullptr, 0); + } + + m_pReg = &rReg; + } +} + +void Metadatable::EnsureMetadataReference() +{ + XmlIdRegistry& rReg( + m_pReg ? *m_pReg : dynamic_cast<XmlIdRegistry&>( GetRegistry() ) ); + rReg.RegisterMetadatableAndCreateID( *this ); + m_pReg = &rReg; +} + +static const ::sfx2::IXmlIdRegistry& GetRegistryConst(Metadatable const& i_rObject) +{ + return const_cast< Metadatable& >( i_rObject ).GetRegistry(); +} + +void +Metadatable::RegisterAsCopyOf(Metadatable const & i_rSource, + const bool i_bCopyPrecedesSource) +{ + OSL_ENSURE(typeid(*this) == typeid(i_rSource) + || typeid(i_rSource) == typeid(MetadatableUndo) + || typeid(*this) == typeid(MetadatableUndo) + || typeid(i_rSource) == typeid(MetadatableClipboard) + || typeid(*this) == typeid(MetadatableClipboard), + "RegisterAsCopyOf element with different class?"); + OSL_ENSURE(!m_pReg, "RegisterAsCopyOf called on element with XmlId?"); + + if (m_pReg) + { + RemoveMetadataReference(); + } + + try + { + if (i_rSource.m_pReg) + { + XmlIdRegistry & rReg( + dynamic_cast<XmlIdRegistry&>( GetRegistry() ) ); + if (i_rSource.m_pReg == &rReg) + { + OSL_ENSURE(!IsInClipboard(), + "RegisterAsCopy: both in clipboard?"); + if (!IsInClipboard()) + { + XmlIdRegistryDocument & rRegDoc( + dynamic_cast<XmlIdRegistryDocument&>( rReg ) ); + rRegDoc.RegisterCopy(i_rSource, *this, + i_bCopyPrecedesSource); + m_pReg = &rRegDoc; + } + return; + } + // source is in different document + XmlIdRegistryDocument * pRegDoc( + dynamic_cast<XmlIdRegistryDocument *>(&rReg) ); + XmlIdRegistryClipboard * pRegClp( + dynamic_cast<XmlIdRegistryClipboard*>(&rReg) ); + + if (pRegClp) + { + beans::StringPair SourceRef( + i_rSource.m_pReg->GetXmlIdForElement(i_rSource) ); + bool isLatent( SourceRef.Second.isEmpty() ); + XmlIdRegistryDocument * pSourceRegDoc( + dynamic_cast<XmlIdRegistryDocument*>(i_rSource.m_pReg) ); + OSL_ENSURE(pSourceRegDoc, "RegisterAsCopyOf: 2 clipboards?"); + if (!pSourceRegDoc) return; + // this is a copy _to_ the clipboard + if (isLatent) + { + pSourceRegDoc->LookupXmlId(i_rSource, + SourceRef.First, SourceRef.Second); + } + Metadatable & rLink( + pRegClp->RegisterCopyClipboard(*this, SourceRef, isLatent)); + m_pReg = pRegClp; + // register as copy in the non-clipboard registry + pSourceRegDoc->RegisterCopy(i_rSource, rLink, + false); // i_bCopyPrecedesSource); + rLink.m_pReg = pSourceRegDoc; + } + else if (pRegDoc) + { + XmlIdRegistryClipboard * pSourceRegClp( + dynamic_cast<XmlIdRegistryClipboard*>(i_rSource.m_pReg) ); + OSL_ENSURE(pSourceRegClp, + "RegisterAsCopyOf: 2 non-clipboards?"); + if (!pSourceRegClp) return; + const MetadatableClipboard * pLink( + pSourceRegClp->SourceLink(i_rSource) ); + // may happen if src got its id via UNO call + if (!pLink) return; + // only register copy if clipboard content is from this SwDoc! + if (&GetRegistryConst(*pLink) == pRegDoc) + { + // this is a copy _from_ the clipboard; check if the + // element is still in the same stream + // N.B.: we check the stream of pLink, not of i_rSource! + bool srcInContent( pLink->IsInContent() ); + bool tgtInContent( IsInContent() ); + if (srcInContent == tgtInContent) + { + pRegDoc->RegisterCopy(*pLink, *this, + true); // i_bCopyPrecedesSource); + m_pReg = pRegDoc; + } + // otherwise: stream change! do not register! + } + } + else + { + OSL_FAIL("neither RegDoc nor RegClp cannot happen"); + } + } + } + catch (const uno::Exception &) + { + TOOLS_WARN_EXCEPTION( "sfx.doc", "Metadatable::RegisterAsCopyOf"); + } +} + +std::shared_ptr<MetadatableUndo> Metadatable::CreateUndo() const +{ + OSL_ENSURE(!IsInUndo(), "CreateUndo called for object in undo?"); + OSL_ENSURE(!IsInClipboard(), "CreateUndo called for object in clipboard?"); + try + { + if (!IsInClipboard() && !IsInUndo() && m_pReg) + { + XmlIdRegistryDocument * pRegDoc( + dynamic_cast<XmlIdRegistryDocument*>( m_pReg ) ); + assert(pRegDoc); + std::shared_ptr<MetadatableUndo> xUndo( + sfx2::XmlIdRegistryDocument::CreateUndo(*this) ); + pRegDoc->RegisterCopy(*this, *xUndo, false); + xUndo->m_pReg = pRegDoc; + return xUndo; + } + } + catch (const uno::Exception &) + { + TOOLS_WARN_EXCEPTION( "sfx.doc", "Metadatable::CreateUndo"); + } + return std::shared_ptr<MetadatableUndo>(); +} + +std::shared_ptr<MetadatableUndo> Metadatable::CreateUndoForDelete() +{ + std::shared_ptr<MetadatableUndo> const xUndo( CreateUndo() ); + RemoveMetadataReference(); + return xUndo; +} + +void Metadatable::RestoreMetadata( + std::shared_ptr<MetadatableUndo> const& i_pUndo) +{ + OSL_ENSURE(!IsInUndo(), "RestoreMetadata called for object in undo?"); + OSL_ENSURE(!IsInClipboard(), + "RestoreMetadata called for object in clipboard?"); + if (IsInClipboard() || IsInUndo()) return; + RemoveMetadataReference(); + if (i_pUndo) + { + RegisterAsCopyOf(*i_pUndo, true); + } +} + +void +Metadatable::JoinMetadatable(Metadatable const & i_rOther, + const bool i_isMergedEmpty, const bool i_isOtherEmpty) +{ + OSL_ENSURE(!IsInUndo(), "JoinMetadatables called for object in undo?"); + OSL_ENSURE(!IsInClipboard(), + "JoinMetadatables called for object in clipboard?"); + if (IsInClipboard() || IsInUndo()) return; + + if (i_isOtherEmpty && !i_isMergedEmpty) + { + // other is empty, thus loses => nothing to do + return; + } + if (i_isMergedEmpty && !i_isOtherEmpty) + { + RemoveMetadataReference(); + RegisterAsCopyOf(i_rOther, true); + return; + } + + if (!i_rOther.m_pReg) + { + // other doesn't have xmlid, thus loses => nothing to do + return; + } + if (!m_pReg) + { + RegisterAsCopyOf(i_rOther, true); + // assumption: i_rOther will be deleted, so don't unregister it here + return; + } + try + { + XmlIdRegistryDocument * pRegDoc( + dynamic_cast<XmlIdRegistryDocument*>( m_pReg ) ); + OSL_ENSURE(pRegDoc, "JoinMetadatable: no pRegDoc?"); + if (pRegDoc) + { + pRegDoc->JoinMetadatables(*this, i_rOther); + } + } + catch (const uno::Exception &) + { + TOOLS_WARN_EXCEPTION( "sfx.doc", "Metadatable::JoinMetadatable"); + } +} + + +// XMetadatable mixin + +// css::rdf::XNode: +OUString SAL_CALL MetadatableMixin::getStringValue() +{ + return getNamespace() + getLocalName(); +} + +// css::rdf::XURI: +OUString SAL_CALL MetadatableMixin::getLocalName() +{ + SolarMutexGuard aGuard; + beans::StringPair mdref( getMetadataReference() ); + if (mdref.Second.isEmpty()) + { + ensureMetadataReference(); // N.B.: side effect! + mdref = getMetadataReference(); + } + return mdref.First + "#" + mdref.Second; +} + +OUString SAL_CALL MetadatableMixin::getNamespace() +{ + SolarMutexGuard aGuard; + const uno::Reference< frame::XModel > xModel( GetModel() ); + const uno::Reference< rdf::XURI > xDMA( xModel, uno::UNO_QUERY_THROW ); + return xDMA->getStringValue(); +} + +// css::rdf::XMetadatable: +beans::StringPair SAL_CALL +MetadatableMixin::getMetadataReference() +{ + SolarMutexGuard aGuard; + + Metadatable *const pObject( GetCoreObject() ); + if (!pObject) + { + throw uno::RuntimeException( + "MetadatableMixin: cannot get core object; not inserted?", + *this); + } + return pObject->GetMetadataReference(); +} + +void SAL_CALL +MetadatableMixin::setMetadataReference( + const beans::StringPair & i_rReference) +{ + SolarMutexGuard aGuard; + + Metadatable *const pObject( GetCoreObject() ); + if (!pObject) + { + throw uno::RuntimeException( + "MetadatableMixin: cannot get core object; not inserted?", + *this); + } + return pObject->SetMetadataReference(i_rReference); +} + +void SAL_CALL MetadatableMixin::ensureMetadataReference() +{ + SolarMutexGuard aGuard; + + Metadatable *const pObject( GetCoreObject() ); + if (!pObject) + { + throw uno::RuntimeException( + "MetadatableMixin: cannot get core object; not inserted?", + *this); + } + return pObject->EnsureMetadataReference(); +} + +} // namespace sfx2 + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |