Quelle  WinClipboard.hxx   Sprache: C

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#pragma once

#include <rtl/ustring.hxx>
#include <sal/types.h>
#include <comphelper/compbase.hxx>
#include <comphelper/interfacecontainer4.hxx>
#include <com/sun/star/datatransfer/XTransferable.hpp>
#include <com/sun/star/datatransfer/clipboard/XClipboardEx.hpp>
#include <com/sun/star/datatransfer/clipboard/XClipboardOwner.hpp>
#include <com/sun/star/datatransfer/clipboard/XClipboardListener.hpp>
#include <com/sun/star/datatransfer/clipboard/XClipboardNotifier.hpp>
#include <com/sun/star/datatransfer/clipboard/XSystemClipboard.hpp>
#include <com/sun/star/datatransfer/clipboard/XFlushableClipboard.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <osl/conditn.hxx>
#include <systools/win32/comtools.hxx>

#include "MtaOleClipb.hxx"
#include "XNotifyingDataObject.hxx"

// implements the XClipboard[Ex] ... interfaces
// for the clipboard viewer mechanism we need a static callback function
// and a static member to reassociate from this static function to the
// class instance
// watch out: we are using only one static member variable and not a list
// because we assume to be instantiated only once
// this will be assured by a OneInstanceFactory of the service and not
// by this class!

class CWinClipboard final
    : public comphelper::WeakComponentImplHelper<css::datatransfer::clipboard::XSystemClipboard,
                                                 css::datatransfer::clipboard::XFlushableClipboard,
                                                 css::lang::XServiceInfo>
{
    friend CXNotifyingDataObject::~CXNotifyingDataObject();

    css::uno::Reference<css::uno::XComponentContext> m_xContext;
    const OUString m_itsName;
    CMtaOleClipboard m_MtaOleClipboard;
    CXNotifyingDataObject* m_pNewOwnClipContent = nullptr; // until onClipboardContentChanged
    CXNotifyingDataObject* m_pCurrentOwnClipContent = nullptr;
    css::uno::Reference<css::datatransfer::XTransferable> m_foreignContent;
    comphelper::OInterfaceContainerHelper4<css::datatransfer::clipboard::XClipboardListener>
        maClipboardListeners;

    CXNotifyingDataObject* getOwnClipContent() const;

    void handleClipboardContentChanged();
    void onReleaseDataObject(CXNotifyingDataObject& theCaller);

    void registerClipboardViewer();
    void unregisterClipboardViewer();

    static void WINAPI onClipboardContentChanged();

    css::uno::Reference<css::datatransfer::XTransferable> getContents_noLock();

public:
    CWinClipboard(const css::uno::Reference<css::uno::XComponentContext>& rxContext,
                  const OUString& aClipboardName);
    virtual ~CWinClipboard() override;

    // XClipboard
    virtual css::uno::Reference<css::datatransfer::XTransferable> SAL_CALL getContents() override;
    virtual void SAL_CALL setContents(
        const css::uno::Reference<css::datatransfer::XTransferable>& xTransferable,
        const css::uno::Reference<css::datatransfer::clipboard::XClipboardOwner>& xClipboardOwner)
        override;
    virtual OUString SAL_CALL getName() override;

    // XFlushableClipboard
    virtual void SAL_CALL flushClipboard() override;

    // XClipboardEx
    virtual sal_Int8 SAL_CALL getRenderingCapabilities() override;

    // XClipboardNotifier
    virtual void SAL_CALL addClipboardListener(
        const css::uno::Reference<css::datatransfer::clipboard::XClipboardListener>& listener)
        override;
    virtual void SAL_CALL removeClipboardListener(
        const css::uno::Reference<css::datatransfer::clipboard::XClipboardListener>& listener)
        override;

    // XServiceInfo
    virtual OUString SAL_CALL getImplementationName() override;
    virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
    virtual css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override;

    IDataObjectPtr getIDataObject();

    virtual void disposing(std::unique_lock<std::mutex>&) override;
};

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