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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /cppuhelper/source/component.cxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'cppuhelper/source/component.cxx')
-rw-r--r--cppuhelper/source/component.cxx223
1 files changed, 223 insertions, 0 deletions
diff --git a/cppuhelper/source/component.cxx b/cppuhelper/source/component.cxx
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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 <osl/diagnose.h>
+#include <sal/log.hxx>
+#include <cppuhelper/component.hxx>
+#include <cppuhelper/exc_hlp.hxx>
+#include <cppuhelper/typeprovider.hxx>
+#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
+#include <com/sun/star/uno/RuntimeException.hpp>
+
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::lang;
+
+namespace cppu
+{
+
+
+// class OComponentHelper
+
+
+OComponentHelper::OComponentHelper( Mutex & rMutex )
+ : rBHelper( rMutex )
+{
+}
+OComponentHelper::~OComponentHelper()
+{
+}
+
+Any OComponentHelper::queryInterface( Type const & rType )
+{
+ return OWeakAggObject::queryInterface( rType );
+}
+Any OComponentHelper::queryAggregation( Type const & rType )
+{
+ if (rType == cppu::UnoType<lang::XComponent>::get())
+ {
+ void * p = static_cast< lang::XComponent * >( this );
+ return Any( &p, rType );
+ }
+ if (rType == cppu::UnoType<lang::XTypeProvider>::get())
+ {
+ void * p = static_cast< lang::XTypeProvider * >( this );
+ return Any( &p, rType );
+ }
+ return OWeakAggObject::queryAggregation( rType );
+}
+void OComponentHelper::acquire() noexcept
+{
+ OWeakAggObject::acquire();
+}
+
+void OComponentHelper::release() noexcept
+{
+ Reference<XInterface > x( xDelegator );
+ if (! x.is())
+ {
+ if (osl_atomic_decrement( &m_refCount ) == 0)
+ {
+ if (! rBHelper.bDisposed)
+ {
+ // *before* again incrementing our ref count, ensure that our weak connection point
+ // will not create references to us anymore (via XAdapter::queryAdapted)
+ disposeWeakConnectionPoint();
+
+ Reference<XInterface > xHoldAlive( *this );
+ // First dispose
+ try
+ {
+ dispose();
+ }
+ catch (css::uno::RuntimeException & exc)
+ {
+ // release should not throw exceptions
+ SAL_WARN( "cppuhelper", exc );
+ }
+
+ // only the alive ref holds the object
+ OSL_ASSERT( m_refCount == 1 );
+ // destroy the object if xHoldAlive decrement the refcount to 0
+ return;
+ }
+ }
+ // restore the reference count
+ osl_atomic_increment( &m_refCount );
+ }
+ OWeakAggObject::release();
+}
+
+Sequence< Type > OComponentHelper::getTypes()
+{
+ static OTypeCollection s_aTypes(
+ cppu::UnoType<lang::XComponent>::get(),
+ cppu::UnoType<lang::XTypeProvider>::get(),
+ cppu::UnoType<XAggregation>::get(),
+ cppu::UnoType<XWeak>::get() );
+
+ return s_aTypes.getTypes();
+}
+
+// XComponent
+void OComponentHelper::disposing()
+{
+}
+
+// XComponent
+void OComponentHelper::dispose()
+{
+ // An frequently programming error is to release the last
+ // reference to this object in the disposing message.
+ // Make it robust, hold a self Reference.
+ Reference<XComponent > xSelf( this );
+
+ // Guard dispose against multiple threading
+ // Remark: It is an error to call dispose more than once
+ bool bDoDispose = false;
+ {
+ MutexGuard aGuard( rBHelper.rMutex );
+ if( !rBHelper.bDisposed && !rBHelper.bInDispose )
+ {
+ // only one call go into this section
+ rBHelper.bInDispose = true;
+ bDoDispose = true;
+ }
+ }
+
+ // Do not hold the mutex because we are broadcasting
+ if( bDoDispose )
+ {
+ // Create an event with this as sender
+ try
+ {
+ try
+ {
+ Reference<XInterface > xSource(
+ Reference<XInterface >::query( static_cast<XComponent *>(this) ) );
+ EventObject aEvt;
+ aEvt.Source = xSource;
+ // inform all listeners to release this object
+ // The listener container are automatically cleared
+ rBHelper.aLC.disposeAndClear( aEvt );
+ // notify subclasses to do their dispose
+ disposing();
+ }
+ catch (...)
+ {
+ MutexGuard aGuard( rBHelper.rMutex );
+ // bDispose and bInDisposing must be set in this order:
+ rBHelper.bDisposed = true;
+ rBHelper.bInDispose = false;
+ throw;
+ }
+ MutexGuard aGuard( rBHelper.rMutex );
+ // bDispose and bInDisposing must be set in this order:
+ rBHelper.bDisposed = true;
+ rBHelper.bInDispose = false;
+ }
+ catch (RuntimeException &)
+ {
+ throw;
+ }
+ catch (Exception & exc)
+ {
+ css::uno::Any anyEx = cppu::getCaughtException();
+ throw lang::WrappedTargetRuntimeException(
+ "unexpected UNO exception caught: " + exc.Message,
+ nullptr, anyEx );
+ }
+ }
+ else
+ {
+ // in a multithreaded environment, it can't be avoided
+ // that dispose is called twice.
+ // However this condition is traced, because it MAY indicate an error.
+ SAL_WARN("cppuhelper", "OComponentHelper::dispose() - dispose called twice" );
+ }
+}
+
+// XComponent
+void OComponentHelper::addEventListener(
+ const Reference<XEventListener > & rxListener )
+{
+ ClearableMutexGuard aGuard( rBHelper.rMutex );
+ if (rBHelper.bDisposed || rBHelper.bInDispose)
+ {
+ aGuard.clear();
+ Reference< XInterface > x( static_cast<XComponent *>(this), UNO_QUERY );
+ rxListener->disposing( EventObject( x ) );
+ }
+ else
+ {
+ rBHelper.addListener( cppu::UnoType<decltype(rxListener)>::get(), rxListener );
+ }
+}
+
+// XComponent
+void OComponentHelper::removeEventListener(
+ const Reference<XEventListener > & rxListener )
+{
+ rBHelper.removeListener( cppu::UnoType<decltype(rxListener)>::get(), rxListener );
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */