oleembobj.hxx

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/* -*- 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 .
 */
 
#pragma once
 
#include <com/sun/star/uno/Sequence.hxx>
#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/embed/XEmbeddedObject.hpp>
#include <com/sun/star/embed/XEmbeddedOleObject.hpp>
#include <com/sun/star/embed/XInplaceObject.hpp>
#include <com/sun/star/embed/XEmbedPersist.hpp>
#include <com/sun/star/embed/XLinkageSupport.hpp>
#include <com/sun/star/embed/VerbDescriptor.hpp>
#include <com/sun/star/container/XChild.hpp>
#include <com/sun/star/util/XCloseable.hpp>
#include <com/sun/star/util/XCloseListener.hpp>
#include <com/sun/star/io/XActiveDataStreamer.hpp>
#include <com/sun/star/lang/XInitialization.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <cppuhelper/implbase.hxx>
#include <rtl/ref.hxx>
 
#include <osl/thread.h>
#include <memory>
 
namespace comphelper {
    class OMultiTypeInterfaceContainerHelper2;
}
 
class VerbExecutionController
{
    // the following mutex is allowed to be locked only for variables initialization, so no deadlock can be caused
    ::osl::Mutex    m_aVerbExecutionMutex;
 
    sal_Int32 m_nNotificationLock;
 
#ifdef _WIN32
    bool m_bWasEverActive;
    bool m_bVerbExecutionInProgress;
    oslThreadIdentifier m_nVerbExecutionThreadIdentifier;
    bool m_bChangedOnVerbExecution;
#endif
 
public:
 
    VerbExecutionController()
    : m_nNotificationLock( 0 )
#ifdef _WIN32
    , m_bWasEverActive( false )
    , m_bVerbExecutionInProgress( false )
    , m_nVerbExecutionThreadIdentifier( 0 )
    , m_bChangedOnVerbExecution( false )
#endif
    {}
 
#ifdef _WIN32
    void StartControlExecution();
    bool EndControlExecution_WasModified();
    void ModificationNotificationIsDone();
    // no need to lock anything to check the value of the numeric members
    bool CanDoNotification() { return ( !m_bVerbExecutionInProgress && !m_bWasEverActive && !m_nNotificationLock ); }
    // ... or to change it
    void ObjectIsActive() { m_bWasEverActive = true; }
#endif
    void LockNotification();
    void UnlockNotification();
};
 
class VerbExecutionControllerGuard
{
    VerbExecutionController& m_rController;
public:
 
    VerbExecutionControllerGuard( VerbExecutionController& rController )
    : m_rController( rController )
    {
        m_rController.LockNotification();
    }
 
    ~VerbExecutionControllerGuard()
    {
        m_rController.UnlockNotification();
    }
};
 
 
class OleComponent;
class OwnView_Impl;
class OleEmbeddedObject : public ::cppu::WeakImplHelper
                        < css::embed::XEmbeddedObject
                        , css::embed::XEmbeddedOleObject
                        , css::embed::XEmbedPersist
                        , css::embed::XLinkageSupport
                        , css::embed::XInplaceObject
                        , css::container::XChild
                        , css::io::XActiveDataStreamer
                        , css::lang::XInitialization
                        , css::lang::XServiceInfo >
{
    friend class OleComponent;
 
    ::osl::Mutex    m_aMutex;
 
    rtl::Reference<OleComponent> m_pOleComponent;
 
    std::unique_ptr<::comphelper::OMultiTypeInterfaceContainerHelper2> m_pInterfaceContainer;
 
    bool m_bReadOnly;
 
    bool m_bDisposed;
    sal_Int32 m_nObjectState;
    sal_Int32 m_nTargetState;
    sal_Int32 m_nUpdateMode;
 
    css::uno::Reference< css::uno::XComponentContext > m_xContext;
 
    css::uno::Sequence< sal_Int8 > m_aClassID;
    OUString m_aClassName;
 
    css::uno::Reference< css::embed::XEmbeddedClient > m_xClientSite;
 
    OUString m_aContainerName;
 
    css::uno::Reference< css::util::XCloseListener > m_xClosePreventer;
 
    bool m_bWaitSaveCompleted;
    bool m_bNewVisReplInStream;
    css::uno::Reference< css::io::XStream > m_xNewCachedVisRepl;
    OUString m_aNewEntryName;
    css::uno::Reference< css::embed::XStorage > m_xNewParentStorage;
    css::uno::Reference< css::io::XStream > m_xNewObjectStream;
    bool m_bStoreLoaded;
 
    css::uno::Reference< css::io::XStream > m_xCachedVisualRepresentation;
    bool m_bVisReplInitialized;
    bool m_bVisReplInStream;
    bool m_bStoreVisRepl;
 
    bool m_bIsLink;
 
    // TODO/LATER: may need to cache more than one aspect in future
    bool m_bHasCachedSize; // the object has cached size
    css::awt::Size m_aCachedSize;
    sal_Int64 m_nCachedAspect;
 
    bool m_bHasSizeToSet;  // the object has cached size that should be set to OLE component
    css::awt::Size m_aSizeToSet; // this size might be different from the cached one ( scaling is applied )
    sal_Int64 m_nAspectToSet;
 
 
    // cache the status of the object
    // TODO/LATER: may need to cache more than one aspect in future
    bool m_bGotStatus;
    sal_Int64 m_nStatus;
    sal_Int64 m_nStatusAspect;
 
    // embedded object related stuff
    OUString m_aEntryName;
    css::uno::Reference< css::embed::XStorage > m_xParentStorage;
    css::uno::Reference< css::io::XStream > m_xObjectStream;
 
    // link related stuff
    OUString m_aLinkURL; // ???
 
    // points to own view provider if the object has no server
    rtl::Reference<OwnView_Impl> m_xOwnView;
 
    // whether the object should be initialized from clipboard in case of default initialization
    bool m_bFromClipboard;
 
    OUString m_aTempURL;
 
    OUString m_aTempDumpURL;
 
    // STAMPIT solution
    // the following member is used during verb execution to detect whether the verb execution modifies the object
    VerbExecutionController m_aVerbExecutionController;
 
    // if the following member is set, the object works in wrapper mode
    css::uno::Reference< css::embed::XEmbeddedObject > m_xWrappedObject;
    bool m_bTriedConversion;
    OUString m_aFilterName; // if m_bTriedConversion, then the filter detected by that
 
    css::uno::Reference< css::uno::XInterface > m_xParent;
 
    bool m_bStreamReadOnly = false;
 
protected:
    css::uno::Reference< css::io::XStream > TryToGetAcceptableFormat_Impl(
                                    const css::uno::Reference< css::io::XStream >& xStream );
 
    css::uno::Reference< css::io::XStream > GetNewFilledTempStream_Impl(
                                    const css::uno::Reference< css::io::XInputStream >& xInStream );
#ifdef _WIN32
    void SwitchComponentToRunningState_Impl();
#endif
    void MakeEventListenerNotification_Impl( const OUString& aEventName );
#ifdef _WIN32
    void StateChangeNotification_Impl( bool bBeforeChange, sal_Int32 nOldState, sal_Int32 nNewState );
    css::uno::Reference< css::io::XOutputStream > GetStreamForSaving();
 
 
    css::uno::Sequence< sal_Int32 > GetIntermediateVerbsSequence_Impl( sal_Int32 nNewState );
 
    static css::uno::Sequence< sal_Int32 > GetReachableStatesList_Impl(
                        const css::uno::Sequence< css::embed::VerbDescriptor >& aVerbList );
#endif
 
    void Dispose();
 
    void SwitchOwnPersistence(
                const css::uno::Reference< css::embed::XStorage >& xNewParentStorage,
                const css::uno::Reference< css::io::XStream >& xNewObjectStream,
                const OUString& aNewName );
 
    void SwitchOwnPersistence(
                const css::uno::Reference< css::embed::XStorage >& xNewParentStorage,
                const OUString& aNewName );
 
    void GetRidOfComponent();
 
    void StoreToLocation_Impl(
                            const css::uno::Reference< css::embed::XStorage >& xStorage,
                            const OUString& sEntName,
                            const css::uno::Sequence< css::beans::PropertyValue >& lObjArgs,
                            bool bSaveAs );
#ifdef _WIN32
    void StoreObjectToStream( css::uno::Reference< css::io::XOutputStream > const & xOutStream );
#endif
    void InsertVisualCache_Impl(
            const css::uno::Reference< css::io::XStream >& xTargetStream,
            const css::uno::Reference< css::io::XStream >& xCachedVisualRepresentation );
 
    void RemoveVisualCache_Impl( const css::uno::Reference< css::io::XStream >& xTargetStream );
 
    void SetVisReplInStream( bool bExists );
    bool HasVisReplInStream();
 
    css::embed::VisualRepresentation GetVisualRepresentationInNativeFormat_Impl(
                    const css::uno::Reference< css::io::XStream >& xCachedVisRepr );
 
    css::uno::Reference< css::io::XStream > TryToRetrieveCachedVisualRepresentation_Impl(
                    const css::uno::Reference< css::io::XStream >& xStream,
                    bool bAllowRepair50 = false )
        noexcept;
#ifdef _WIN32
    bool SaveObject_Impl();
    bool OnShowWindow_Impl( bool bShow );
    void CreateOleComponent_Impl( rtl::Reference<OleComponent> const & pOleComponent = {} );
    void CreateOleComponentAndLoad_Impl( rtl::Reference<OleComponent> const & pOleComponent = {} );
    void CreateOleComponentFromClipboard_Impl( OleComponent* pOleComponent = nullptr );
    OUString CreateTempURLEmpty_Impl();
    OUString GetTempURL_Impl();
    void SetObjectIsLink_Impl( bool bIsLink ) { m_bIsLink = bIsLink; }
#endif
 
    // the following 4 methods are related to switch to wrapping mode
    void MoveListeners();
    css::uno::Reference< css::embed::XStorage > CreateTemporarySubstorage( OUString& o_aStorageName );
    OUString MoveToTemporarySubstream();
    bool TryToConvertToOOo( const css::uno::Reference< css::io::XStream >& xStream );
 
public:
    // in case a new object must be created the class ID must be specified
    OleEmbeddedObject( css::uno::Reference< css::uno::XComponentContext > xContext,
                        const css::uno::Sequence< sal_Int8 >& aClassID,
                        OUString  aClassName );
 
    // in case object will be loaded from a persistent entry or from a file the class ID will be detected on loading
    // factory can do it for OOo objects, but for OLE objects OS dependent code is required
    OleEmbeddedObject( css::uno::Reference< css::uno::XComponentContext > xContext,
                        bool bLink );
#ifdef _WIN32
    // this constructor let object be initialized from clipboard
    OleEmbeddedObject( const css::uno::Reference< css::uno::XComponentContext >& xContext );
#endif
 
    virtual ~OleEmbeddedObject() override;
 
#ifdef _WIN32
    static void OnIconChanged_Impl();
    void OnViewChanged_Impl();
    void OnClosed_Impl();
#endif
 
// XEmbeddedObject
 
    virtual void SAL_CALL changeState( sal_Int32 nNewState ) override;
 
    virtual css::uno::Sequence< sal_Int32 > SAL_CALL getReachableStates() override;
 
    virtual sal_Int32 SAL_CALL getCurrentState() override;
 
    virtual void SAL_CALL doVerb( sal_Int32 nVerbID ) override;
 
    virtual css::uno::Sequence< css::embed::VerbDescriptor > SAL_CALL getSupportedVerbs() override;
 
    virtual void SAL_CALL setClientSite(
                const css::uno::Reference< css::embed::XEmbeddedClient >& xClient ) override;
 
    virtual css::uno::Reference< css::embed::XEmbeddedClient > SAL_CALL getClientSite() override;
 
    virtual void SAL_CALL update() override;
 
    virtual void SAL_CALL setUpdateMode( sal_Int32 nMode ) override;
 
    virtual sal_Int64 SAL_CALL getStatus( sal_Int64 nAspect ) override;
 
    virtual void SAL_CALL setContainerName( const OUString& sName ) override;
 
 
// XVisualObject
 
    virtual void SAL_CALL setVisualAreaSize( sal_Int64 nAspect, const css::awt::Size& aSize ) override;
 
    virtual css::awt::Size SAL_CALL getVisualAreaSize( sal_Int64 nAspect ) override;
 
    virtual css::embed::VisualRepresentation SAL_CALL getPreferredVisualRepresentation( ::sal_Int64 nAspect ) override;
 
    virtual sal_Int32 SAL_CALL getMapUnit( sal_Int64 nAspect ) override;
 
 
// XEmbedPersist
 
    virtual void SAL_CALL setPersistentEntry(
                    const css::uno::Reference< css::embed::XStorage >& xStorage,
                    const OUString& sEntName,
                    sal_Int32 nEntryConnectionMode,
                    const css::uno::Sequence< css::beans::PropertyValue >& lArguments,
                    const css::uno::Sequence< css::beans::PropertyValue >& lObjArgs ) override;
 
    virtual void SAL_CALL storeToEntry( const css::uno::Reference< css::embed::XStorage >& xStorage, const OUString& sEntName, const css::uno::Sequence< css::beans::PropertyValue >& lArguments, const css::uno::Sequence< css::beans::PropertyValue >& lObjArgs ) override;
 
    virtual void SAL_CALL storeAsEntry(
                const css::uno::Reference< css::embed::XStorage >& xStorage,
                const OUString& sEntName,
                const css::uno::Sequence< css::beans::PropertyValue >& lArguments,
                const css::uno::Sequence< css::beans::PropertyValue >& lObjArgs ) override;
 
    virtual void SAL_CALL saveCompleted( sal_Bool bUseNew ) override;
 
    virtual sal_Bool SAL_CALL hasEntry() override;
 
    virtual OUString SAL_CALL getEntryName() override;
 
// XLinkageSupport
 
    virtual void SAL_CALL breakLink( const css::uno::Reference< css::embed::XStorage >& xStorage,
                                     const OUString& sEntName ) override;
 
    virtual sal_Bool SAL_CALL isLink() override;
 
    virtual OUString SAL_CALL getLinkURL() override;
 
// XCommonEmbedPersist
    virtual void SAL_CALL storeOwn() override;
 
    virtual sal_Bool SAL_CALL isReadonly() override;
 
    virtual void SAL_CALL reload(
                const css::uno::Sequence< css::beans::PropertyValue >& lArguments,
                const css::uno::Sequence< css::beans::PropertyValue >& lObjArgs ) override;
 
// XClassifiedObject
 
    virtual css::uno::Sequence< sal_Int8 > SAL_CALL getClassID() override;
 
    virtual OUString SAL_CALL getClassName() override;
 
    virtual void SAL_CALL setClassInfo(
                const css::uno::Sequence< sal_Int8 >& aClassID, const OUString& aClassName ) override;
 
// XStateChangeBroadcaster
    virtual void SAL_CALL addStateChangeListener( const css::uno::Reference< css::embed::XStateChangeListener >& xListener ) override;
    virtual void SAL_CALL removeStateChangeListener( const css::uno::Reference< css::embed::XStateChangeListener >& xListener ) override;
 
 
// XComponentSupplier
 
    virtual css::uno::Reference< css::util::XCloseable > SAL_CALL getComponent() override;
 
// XCloseable
 
    virtual void SAL_CALL close( sal_Bool DeliverOwnership ) override;
 
    virtual void SAL_CALL addCloseListener(
                const css::uno::Reference< css::util::XCloseListener >& Listener ) override;
 
    virtual void SAL_CALL removeCloseListener(
                const css::uno::Reference< css::util::XCloseListener >& Listener ) override;
 
// XEventBroadcaster
    virtual void SAL_CALL addEventListener(
                const css::uno::Reference< css::document::XEventListener >& Listener ) override;
 
    virtual void SAL_CALL removeEventListener(
                const css::uno::Reference< css::document::XEventListener >& Listener ) override;
 
// XInplaceObject ( only for wrapping scenario here )
 
    virtual void SAL_CALL setObjectRectangles( const css::awt::Rectangle& aPosRect,
                                          const css::awt::Rectangle& aClipRect ) override;
 
    virtual void SAL_CALL enableModeless( sal_Bool bEnable ) override;
 
    virtual void SAL_CALL translateAccelerators(
                    const css::uno::Sequence< css::awt::KeyEvent >& aKeys ) override;
 
    // XChild ( only for wrapping scenario here )
    virtual css::uno::Reference< css::uno::XInterface > SAL_CALL getParent(  ) override;
    virtual void SAL_CALL setParent( const css::uno::Reference< css::uno::XInterface >& Parent ) override;
 
    // XActiveDataStreamer
    void SAL_CALL setStream(const css::uno::Reference<css::io::XStream>& xStream) override;
    css::uno::Reference<css::io::XStream> SAL_CALL getStream() override;
 
    // XInitialization
    void SAL_CALL initialize(const css::uno::Sequence<css::uno::Any>& rArguments) override;
 
    // XServiceInfo
    OUString SAL_CALL getImplementationName() override;
    sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
    css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
};
 
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