office-gobmx/sdext/source/presenter/PresenterCurrentSlideObserver.cxx
Henry Castro f153be729e lok: remove event listener when disposing
In order to prevent that the event listener
holds the object reference count when removed,
ensure they are removed when disposing the object.

Change-Id: I7cb4cb7d87acfc9610c2498760ade531456fe22e
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/113493
Tested-by: Jenkins
Reviewed-by: Henry Castro <hcastro@collabora.com>
2021-04-08 13:58:11 +02:00

130 lines
4.1 KiB
C++

/* -*- 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 "PresenterCurrentSlideObserver.hxx"
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
namespace sdext::presenter {
//===== PresenterCurrentSlideObserver =========================================
PresenterCurrentSlideObserver::PresenterCurrentSlideObserver (
const ::rtl::Reference<PresenterController>& rxPresenterController,
const Reference<presentation::XSlideShowController>& rxSlideShowController)
: PresenterCurrentSlideObserverInterfaceBase(m_aMutex),
mpPresenterController(rxPresenterController),
mxSlideShowController(rxSlideShowController)
{
if( mpPresenterController.is() )
{
mpPresenterController->addEventListener(this);
}
if( mxSlideShowController.is() )
{
// Listen for events from the slide show controller.
mxSlideShowController->addSlideShowListener(static_cast<XSlideShowListener*>(this));
}
}
PresenterCurrentSlideObserver::~PresenterCurrentSlideObserver()
{
}
void SAL_CALL PresenterCurrentSlideObserver::disposing()
{
// Disconnect form the slide show controller.
if(mxSlideShowController.is())
{
mxSlideShowController->removeSlideShowListener(static_cast<XSlideShowListener*>(this));
mxSlideShowController = nullptr;
}
if (mpPresenterController.is())
mpPresenterController->removeEventListener(this);
}
//----- XSlideShowListener ----------------------------------------------------
void SAL_CALL PresenterCurrentSlideObserver::beginEvent (
const Reference<animations::XAnimationNode>&)
{}
void SAL_CALL PresenterCurrentSlideObserver::endEvent (
const Reference<animations::XAnimationNode>&)
{}
void SAL_CALL PresenterCurrentSlideObserver::repeat (
const css::uno::Reference<css::animations::XAnimationNode>&,
sal_Int32)
{}
void SAL_CALL PresenterCurrentSlideObserver::paused()
{
}
void SAL_CALL PresenterCurrentSlideObserver::resumed()
{
}
void SAL_CALL PresenterCurrentSlideObserver::slideEnded (sal_Bool bReverse)
{
// Determine whether the new current slide (the one after the one that
// just ended) is the slide past the last slide in the presentation,
// i.e. the one that says something like "click to end presentation...".
if (mxSlideShowController.is() && !bReverse)
if (mxSlideShowController->getNextSlideIndex() < 0)
if( mpPresenterController.is() )
mpPresenterController->UpdateCurrentSlide(+1);
}
void SAL_CALL PresenterCurrentSlideObserver::hyperLinkClicked (const OUString &)
{
}
void SAL_CALL PresenterCurrentSlideObserver::slideTransitionStarted()
{
if( mpPresenterController.is() )
mpPresenterController->UpdateCurrentSlide(0);
}
void SAL_CALL PresenterCurrentSlideObserver::slideTransitionEnded()
{
}
void SAL_CALL PresenterCurrentSlideObserver::slideAnimationsEnded()
{
}
//----- XEventListener --------------------------------------------------------
void SAL_CALL PresenterCurrentSlideObserver::disposing (
const lang::EventObject& rEvent)
{
if (rEvent.Source == Reference<XInterface>(static_cast<XWeak*>(mpPresenterController.get())))
dispose();
else if (rEvent.Source == mxSlideShowController)
mxSlideShowController = nullptr;
}
} // end of namespace ::sdext::presenter
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */