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Diffstat (limited to '')
| -rw-r--r-- | vcl/unx/generic/dtrans/X11_clipboard.cxx | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/vcl/unx/generic/dtrans/X11_clipboard.cxx b/vcl/unx/generic/dtrans/X11_clipboard.cxx new file mode 100644 index 000000000..9b50eff8d --- /dev/null +++ b/vcl/unx/generic/dtrans/X11_clipboard.cxx @@ -0,0 +1,231 @@ +/* -*- 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 <X11/Xatom.h> +#include "X11_clipboard.hxx" +#include "X11_transferable.hxx" +#include <com/sun/star/datatransfer/clipboard/RenderingCapabilities.hpp> +#include <cppuhelper/supportsservice.hxx> +#include <rtl/ref.hxx> +#include <sal/log.hxx> + +#if OSL_DEBUG_LEVEL > 1 +#include <stdio.h> +#endif + +using namespace com::sun::star::datatransfer; +using namespace com::sun::star::datatransfer::clipboard; +using namespace com::sun::star::lang; +using namespace com::sun::star::uno; +using namespace com::sun::star::awt; +using namespace cppu; +using namespace osl; +using namespace x11; + +X11Clipboard::X11Clipboard( SelectionManager& rManager, Atom aSelection ) : + ::cppu::WeakComponentImplHelper< + css::datatransfer::clipboard::XSystemClipboard, + css::lang::XServiceInfo + >( rManager.getMutex() ), + + m_xSelectionManager( &rManager ), + m_aSelection( aSelection ) +{ +#if OSL_DEBUG_LEVEL > 1 + SAL_INFO("vcl.unx.dtrans", "creating instance of X11Clipboard (this=" + << this << ")."); +#endif +} + +css::uno::Reference<css::datatransfer::clipboard::XClipboard> +X11Clipboard::create( SelectionManager& rManager, Atom aSelection ) +{ + rtl::Reference<X11Clipboard> cb(new X11Clipboard(rManager, aSelection)); + if( aSelection != None ) + { + rManager.registerHandler(aSelection, *cb); + } + else + { + rManager.registerHandler(XA_PRIMARY, *cb); + rManager.registerHandler(rManager.getAtom("CLIPBOARD"), *cb); + } + return cb; +} + +X11Clipboard::~X11Clipboard() +{ + MutexGuard aGuard( *Mutex::getGlobalMutex() ); + +#if OSL_DEBUG_LEVEL > 1 + SAL_INFO("vcl.unx.dtrans", "shutting down instance of X11Clipboard (this=" + << this + << ", Selection=\"" + << m_xSelectionManager->getString( m_aSelection ) + << "\")."); +#endif + + if( m_aSelection != None ) + m_xSelectionManager->deregisterHandler( m_aSelection ); + else + { + m_xSelectionManager->deregisterHandler( XA_PRIMARY ); + m_xSelectionManager->deregisterHandler( m_xSelectionManager->getAtom( "CLIPBOARD" ) ); + } +} + +void X11Clipboard::fireChangedContentsEvent() +{ + ClearableMutexGuard aGuard( m_xSelectionManager->getMutex() ); +#if OSL_DEBUG_LEVEL > 1 + SAL_INFO("vcl.unx.dtrans", "X11Clipboard::fireChangedContentsEvent for " + << m_xSelectionManager->getString( m_aSelection ) + << " (" << m_aListeners.size() << " listeners)."); +#endif + ::std::vector< Reference< XClipboardListener > > listeners( m_aListeners ); + aGuard.clear(); + + ClipboardEvent aEvent( static_cast<OWeakObject*>(this), m_aContents); + for (auto const& listener : listeners) + { + if( listener.is() ) + listener->changedContents(aEvent); + } +} + +void X11Clipboard::clearContents() +{ + ClearableMutexGuard aGuard(m_xSelectionManager->getMutex()); + // protect against deletion during outside call + Reference< XClipboard > xThis( static_cast<XClipboard*>(this)); + // copy member references on stack so they can be called + // without having the mutex + Reference< XClipboardOwner > xOwner( m_aOwner ); + Reference< XTransferable > xKeepAlive( m_aContents ); + // clear members + m_aOwner.clear(); + m_aContents.clear(); + + // release the mutex + aGuard.clear(); + + // inform previous owner of lost ownership + if ( xOwner.is() ) + xOwner->lostOwnership(xThis, m_aContents); +} + +Reference< XTransferable > SAL_CALL X11Clipboard::getContents() +{ + MutexGuard aGuard(m_xSelectionManager->getMutex()); + + if( ! m_aContents.is() ) + m_aContents = new X11Transferable( SelectionManager::get(), m_aSelection ); + return m_aContents; +} + +void SAL_CALL X11Clipboard::setContents( + const Reference< XTransferable >& xTrans, + const Reference< XClipboardOwner >& xClipboardOwner ) +{ + // remember old values for callbacks before setting the new ones. + ClearableMutexGuard aGuard(m_xSelectionManager->getMutex()); + + Reference< XClipboardOwner > oldOwner( m_aOwner ); + m_aOwner = xClipboardOwner; + + Reference< XTransferable > oldContents( m_aContents ); + m_aContents = xTrans; + + aGuard.clear(); + + // for now request ownership for both selections + if( m_aSelection != None ) + m_xSelectionManager->requestOwnership( m_aSelection ); + else + { + m_xSelectionManager->requestOwnership( XA_PRIMARY ); + m_xSelectionManager->requestOwnership( m_xSelectionManager->getAtom( "CLIPBOARD" ) ); + } + + // notify old owner on loss of ownership + if( oldOwner.is() ) + oldOwner->lostOwnership(static_cast < XClipboard * > (this), oldContents); + + // notify all listeners on content changes + fireChangedContentsEvent(); +} + +OUString SAL_CALL X11Clipboard::getName() +{ + return m_xSelectionManager->getString( m_aSelection ); +} + +sal_Int8 SAL_CALL X11Clipboard::getRenderingCapabilities() +{ + return RenderingCapabilities::Delayed; +} + +void SAL_CALL X11Clipboard::addClipboardListener( const Reference< XClipboardListener >& listener ) +{ + MutexGuard aGuard( m_xSelectionManager->getMutex() ); + m_aListeners.push_back( listener ); +} + +void SAL_CALL X11Clipboard::removeClipboardListener( const Reference< XClipboardListener >& listener ) +{ + MutexGuard aGuard( m_xSelectionManager->getMutex() ); + m_aListeners.erase( std::remove(m_aListeners.begin(), m_aListeners.end(), listener), m_aListeners.end() ); +} + +Reference< XTransferable > X11Clipboard::getTransferable() +{ + return getContents(); +} + +void X11Clipboard::clearTransferable() +{ + clearContents(); +} + +void X11Clipboard::fireContentsChanged() +{ + fireChangedContentsEvent(); +} + +Reference< XInterface > X11Clipboard::getReference() noexcept +{ + return Reference< XInterface >( static_cast< OWeakObject* >(this) ); +} + +OUString SAL_CALL X11Clipboard::getImplementationName( ) +{ + return X11_CLIPBOARD_IMPLEMENTATION_NAME; +} + +sal_Bool SAL_CALL X11Clipboard::supportsService( const OUString& ServiceName ) +{ + return cppu::supportsService(this, ServiceName); +} + +Sequence< OUString > SAL_CALL X11Clipboard::getSupportedServiceNames( ) +{ + return X11Clipboard_getSupportedServiceNames(); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |