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authorRĂ¼diger Timm <rt@openoffice.org>2004-07-06 12:13:51 +0000
committerRĂ¼diger Timm <rt@openoffice.org>2004-07-06 12:13:51 +0000
commit096f444d2eca6b606eca4e74d790ca76595b4348 (patch)
tree07925ffd3453647668f0c3ee70100563738b28cf /unotools
parentda18994e4398de46e36957e5382d58c93ff4d173 (diff)
INTEGRATION: CWS dba13 (1.1.2); FILE ADDED
2004/06/18 13:54:09 fs 1.1.2.1: helper class for observing the application shutdown (for non-UNO components)
Diffstat (limited to 'unotools')
-rw-r--r--unotools/source/misc/desktopterminationobserver.cxx280
1 files changed, 280 insertions, 0 deletions
diff --git a/unotools/source/misc/desktopterminationobserver.cxx b/unotools/source/misc/desktopterminationobserver.cxx
new file mode 100644
index 000000000000..09aa00b239de
--- /dev/null
+++ b/unotools/source/misc/desktopterminationobserver.cxx
@@ -0,0 +1,280 @@
+/*************************************************************************
+ *
+ * $RCSfile: desktopterminationobserver.cxx,v $
+ *
+ * $Revision: 1.2 $
+ *
+ * last change: $Author: rt $ $Date: 2004-07-06 13:13:51 $
+ *
+ * The Contents of this file are made available subject to the terms of
+ * either of the following licenses
+ *
+ * - GNU Lesser General Public License Version 2.1
+ * - Sun Industry Standards Source License Version 1.1
+ *
+ * Sun Microsystems Inc., October, 2000
+ *
+ * GNU Lesser General Public License Version 2.1
+ * =============================================
+ * Copyright 2000 by Sun Microsystems, Inc.
+ * 901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ *
+ * Sun Industry Standards Source License Version 1.1
+ * =================================================
+ * The contents of this file are subject to the Sun Industry Standards
+ * Source License Version 1.1 (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.openoffice.org/license.html.
+ *
+ * Software provided under this License is provided on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+ * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
+ * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
+ * See the License for the specific provisions governing your rights and
+ * obligations concerning the Software.
+ *
+ * The Initial Developer of the Original Code is: Sun Microsystems, Inc.
+ *
+ * Copyright: 2000 by Sun Microsystems, Inc.
+ *
+ * All Rights Reserved.
+ *
+ * Contributor(s): _______________________________________
+ *
+ *
+ ************************************************************************/
+
+#ifndef UNOTOOLS_INC_UNOTOOLS_DESKTOPTERMINATIONOBSERVER_HXX
+#include <unotools/desktopterminationobserver.hxx>
+#endif
+
+/** === begin UNO includes === **/
+#ifndef _COM_SUN_STAR_FRAME_XTERMINATELISTENER_HPP_
+#include <com/sun/star/frame/XTerminateListener.hpp>
+#endif
+#ifndef _COM_SUN_STAR_FRAME_XDESKTOP_HPP_
+#include <com/sun/star/frame/XDesktop.hpp>
+#endif
+/** === end UNO includes === **/
+
+#ifndef _CPPUHELPER_IMPLBASE1_HXX_
+#include <cppuhelper/implbase1.hxx>
+#endif
+#ifndef _COMPHELPER_PROCESSFACTORY_HXX_
+#include <comphelper/processfactory.hxx>
+#endif
+
+#include <list>
+
+//........................................................................
+namespace utl
+{
+//........................................................................
+
+ using namespace ::com::sun::star::uno;
+ using namespace ::com::sun::star::lang;
+ using namespace ::com::sun::star::frame;
+
+ namespace
+ {
+ //................................................................
+ typedef ::std::list< ITerminationListener* > Listeners;
+
+ struct ListenerAdminData
+ {
+ Listeners aListeners;
+ bool bAlreadyTerminated;
+ bool bCreatedAdapter;
+
+ ListenerAdminData() : bAlreadyTerminated( false ), bCreatedAdapter( false ) { }
+ };
+
+ //................................................................
+ ListenerAdminData& getListenerAdminData()
+ {
+ static ListenerAdminData s_aData;
+ return s_aData;
+ }
+
+ //================================================================
+ //= OObserverImpl
+ //================================================================
+ class OObserverImpl : public ::cppu::WeakImplHelper1< XTerminateListener >
+ {
+ public:
+ static void ensureObservation();
+
+ protected:
+ OObserverImpl();
+ ~OObserverImpl();
+
+ private:
+ // XTerminateListener
+ virtual void SAL_CALL queryTermination( const EventObject& Event ) throw (TerminationVetoException, RuntimeException);
+ virtual void SAL_CALL notifyTermination( const EventObject& Event ) throw (RuntimeException);
+
+ // XEventListener
+ virtual void SAL_CALL disposing( const ::com::sun::star::lang::EventObject& Source ) throw (::com::sun::star::uno::RuntimeException);
+ };
+
+ //--------------------------------------------------------------------
+ OObserverImpl::OObserverImpl()
+ {
+ }
+
+ //--------------------------------------------------------------------
+ OObserverImpl::~OObserverImpl()
+ {
+ }
+
+ //--------------------------------------------------------------------
+ void OObserverImpl::ensureObservation()
+ {
+ {
+ if ( getListenerAdminData().bCreatedAdapter )
+ return;
+ ::osl::MutexGuard aGuard( ::osl::Mutex::getGlobalMutex() );
+ if ( getListenerAdminData().bCreatedAdapter )
+ return;
+
+ getListenerAdminData().bCreatedAdapter = true;
+ }
+
+ try
+ {
+ Reference< XDesktop > xDesktop;
+ xDesktop = xDesktop.query( ::comphelper::getProcessServiceFactory()->createInstance( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.frame.Desktop" ) ) ) );
+ OSL_ENSURE( xDesktop.is(), "OObserverImpl::ensureObservation: could not ensureObservation the desktop!" );
+ if ( xDesktop.is() )
+ xDesktop->addTerminateListener( new OObserverImpl );
+ }
+ catch( const Exception& )
+ {
+ OSL_ENSURE( sal_False, "OObserverImpl::ensureObservation: caught an exception!" );
+ }
+ }
+
+ //--------------------------------------------------------------------
+ void SAL_CALL OObserverImpl::queryTermination( const EventObject& Event ) throw (TerminationVetoException, RuntimeException)
+ {
+ Listeners aToNotify;
+ {
+ ::osl::MutexGuard aGuard( ::osl::Mutex::getGlobalMutex() );
+ aToNotify = getListenerAdminData().aListeners;
+ }
+
+ for ( Listeners::const_iterator listener = aToNotify.begin();
+ listener != aToNotify.end();
+ ++listener
+ )
+ {
+ if ( !(*listener)->queryTermination() )
+ throw TerminationVetoException();
+ }
+ }
+
+ //--------------------------------------------------------------------
+ void SAL_CALL OObserverImpl::notifyTermination( const EventObject& Event ) throw (RuntimeException)
+ {
+ // get the listeners
+ Listeners aToNotify;
+ {
+ ::osl::MutexGuard aGuard( ::osl::Mutex::getGlobalMutex() );
+ OSL_ENSURE( !getListenerAdminData().bAlreadyTerminated, "OObserverImpl::notifyTermination: terminated twice?" );
+ aToNotify = getListenerAdminData().aListeners;
+ getListenerAdminData().bAlreadyTerminated = true;
+ }
+
+ // notify the listeners
+ for ( Listeners::const_iterator listener = aToNotify.begin();
+ listener != aToNotify.end();
+ ++listener
+ )
+ {
+ (*listener)->notifyTermination();
+ }
+
+ // clear the listener container
+ {
+ ::osl::MutexGuard aGuard( ::osl::Mutex::getGlobalMutex() );
+ getListenerAdminData().aListeners.clear();
+ }
+ }
+
+ //--------------------------------------------------------------------
+ void SAL_CALL OObserverImpl::disposing( const EventObject& Event ) throw (RuntimeException)
+ {
+#if OSL_DEBUG_LEVEL > 0
+ ::osl::MutexGuard aGuard( ::osl::Mutex::getGlobalMutex() );
+ OSL_ENSURE( getListenerAdminData().bAlreadyTerminated, "OObserverImpl::disposing: disposing without terminated?" );
+#endif
+ // not interested in
+ }
+ }
+
+ //====================================================================
+ //= DesktopTerminationObserver
+ //====================================================================
+ //--------------------------------------------------------------------
+ void DesktopTerminationObserver::registerTerminationListener( ITerminationListener* _pListener )
+ {
+ if ( !_pListener )
+ return;
+
+ {
+ ::osl::MutexGuard aGuard( ::osl::Mutex::getGlobalMutex() );
+ if ( getListenerAdminData().bAlreadyTerminated )
+ {
+ _pListener->notifyTermination();
+ return;
+ }
+
+ getListenerAdminData().aListeners.push_back( _pListener );
+ }
+
+ OObserverImpl::ensureObservation();
+ }
+
+ //--------------------------------------------------------------------
+ void DesktopTerminationObserver::revokeTerminationListener( ITerminationListener* _pListener )
+ {
+ ::osl::MutexGuard aGuard( ::osl::Mutex::getGlobalMutex() );
+ if ( getListenerAdminData().bAlreadyTerminated )
+ {
+ _pListener->notifyTermination();
+ return;
+ }
+
+ Listeners& rListeners = getListenerAdminData().aListeners;
+ for ( Listeners::iterator lookup = rListeners.begin();
+ lookup != rListeners.end();
+ ++lookup
+ )
+ {
+ if ( *lookup == _pListener )
+ {
+ rListeners.erase( lookup );
+ break;
+ }
+ }
+ }
+
+//........................................................................
+} // namespace utl
+//........................................................................
+