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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 .
*/
#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: */
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