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https://bitbucket.org/smil3y/kde-playground.git
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118 lines
3.7 KiB
C++
118 lines
3.7 KiB
C++
/* qeventloopinteractor.cpp
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Copyright (C) 2003, 2007 Klarälvdalens Datakonsult AB
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This file is part of QGPGME.
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QGPGME is free software; you can redistribute it and/or modify it
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under the terms of the GNU Library General Public License as published
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by the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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QGPGME is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with QGPGME; see the file COPYING.LIB. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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// -*- c++ -*-
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#include <qgpgme/eventloopinteractor.h>
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#include <gpgme++/context.h>
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#include <QCoreApplication>
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#include <QSocketNotifier>
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#include <QPointer>
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using namespace GpgME;
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QGpgME::EventLoopInteractor::EventLoopInteractor( QObject * parent )
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: QObject( parent ), GpgME::EventLoopInteractor()
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{
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setObjectName( QLatin1String( "QGpgME::EventLoopInteractor::instance()" ) );
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if ( !parent ) {
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if ( QCoreApplication * const app = QCoreApplication::instance() ) {
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connect( app, SIGNAL(aboutToQuit()), SLOT(deleteLater()) );
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connect( app, SIGNAL(aboutToQuit()), SIGNAL(aboutToDestroy()) );
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}
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}
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mSelf = this;
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}
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QGpgME::EventLoopInteractor::~EventLoopInteractor() {
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emit aboutToDestroy();
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mSelf = 0;
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}
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QGpgME::EventLoopInteractor * QGpgME::EventLoopInteractor::mSelf = 0;
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QGpgME::EventLoopInteractor * QGpgME::EventLoopInteractor::instance() {
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if ( !mSelf ) {
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#ifndef NDEBUG
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if ( !QCoreApplication::instance() ) {
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qWarning( "QGpgME::EventLoopInteractor: Need a Q(Core)Application object before calling instance()!" );
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} else {
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#endif
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(void)new EventLoopInteractor;
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#ifndef NDEBUG
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}
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#endif
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}
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return mSelf;
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}
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namespace {
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template <typename T_Enableable>
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class QDisabler {
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const QPointer<T_Enableable> o;
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const bool wasEnabled;
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public:
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explicit QDisabler( T_Enableable * t ) : o( t ), wasEnabled( o && o->isEnabled() )
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{
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if ( t ) {
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t->setEnabled( false );
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}
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}
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~QDisabler()
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{
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if ( o ) {
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o->setEnabled( wasEnabled );
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}
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}
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};
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}
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void QGpgME::EventLoopInteractor::slotWriteActivity( int socket ) {
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// Make sure to disable the notifier while we are processing the event, as
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// it's easy to run into re-entrancy issues, if actOn causes things to return
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// to the event loop in some way (such as showing the passphrase dialog).
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// We use a qpointer as actOn will destroy the notifier, when it's done with the FD
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const QDisabler<QSocketNotifier> disabled( qobject_cast<QSocketNotifier*>( sender() ) );
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actOn( socket , Write );
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}
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void QGpgME::EventLoopInteractor::slotReadActivity( int socket ) {
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const QDisabler<QSocketNotifier> disabled( qobject_cast<QSocketNotifier*>( sender() ) );
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actOn( socket , Read );
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}
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void QGpgME::EventLoopInteractor::nextTrustItemEvent( GpgME::Context * context, const GpgME::TrustItem & item ) {
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emit nextTrustItemEventSignal( context, item );
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}
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void QGpgME::EventLoopInteractor::nextKeyEvent( GpgME::Context * context, const GpgME::Key & key ) {
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emit nextKeyEventSignal( context, key );
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}
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void QGpgME::EventLoopInteractor::operationDoneEvent( GpgME::Context * context, const GpgME::Error & e ) {
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emit operationDoneEventSignal( context, e );
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}
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void QGpgME::EventLoopInteractor::operationStartEvent( GpgME::Context * context ) {
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emit operationStartEventSignal( context );
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}
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