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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 /forms/source/helper/windowstateguard.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 'forms/source/helper/windowstateguard.cxx')
-rw-r--r--forms/source/helper/windowstateguard.cxx213
1 files changed, 213 insertions, 0 deletions
diff --git a/forms/source/helper/windowstateguard.cxx b/forms/source/helper/windowstateguard.cxx
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+++ b/forms/source/helper/windowstateguard.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 <windowstateguard.hxx>
+#include <frm_strings.hxx>
+
+#include <com/sun/star/awt/XWindowListener2.hpp>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <cppuhelper/implbase.hxx>
+#include <tools/diagnose_ex.h>
+
+
+namespace frm
+{
+
+
+ using ::com::sun::star::awt::XWindowListener2;
+ using ::com::sun::star::uno::Reference;
+ using ::com::sun::star::awt::XWindow2;
+ using ::com::sun::star::awt::WindowEvent;
+ using ::com::sun::star::uno::RuntimeException;
+ using ::com::sun::star::awt::XControlModel;
+ using ::com::sun::star::beans::XPropertySet;
+ using ::com::sun::star::lang::EventObject;
+ using ::com::sun::star::uno::UNO_QUERY;
+ using ::com::sun::star::uno::Exception;
+
+ typedef ::cppu::WeakImplHelper < XWindowListener2
+ > WindowStateGuard_Impl_Base;
+ class WindowStateGuard_Impl : public WindowStateGuard_Impl_Base
+ {
+ private:
+ ::osl::Mutex m_aMutex;
+ Reference< XWindow2 > m_xWindow;
+ Reference< XPropertySet > m_xModelProps;
+
+ public:
+ /** constructs the instance
+ @param _rxWindow
+ the window at which to listen. Must not be <NULL/>.
+ @param _rxModel
+ the model which acts as the reference for the states to be enforced. Must not be <NULL/>.
+ */
+ WindowStateGuard_Impl( const Reference< XWindow2 >& _rxWindow, const Reference< XPropertySet >& _rxMdelProps );
+
+ void dispose();
+
+ protected:
+ // XWindowListener2
+ virtual void SAL_CALL windowEnabled( const css::lang::EventObject& e ) override;
+ virtual void SAL_CALL windowDisabled( const css::lang::EventObject& e ) override;
+
+ // XWindowListener
+ virtual void SAL_CALL windowResized( const css::awt::WindowEvent& e ) override;
+ virtual void SAL_CALL windowMoved( const css::awt::WindowEvent& e ) override;
+ virtual void SAL_CALL windowShown( const css::lang::EventObject& e ) override;
+ virtual void SAL_CALL windowHidden( const css::lang::EventObject& e ) override;
+
+ // XEventListener
+ virtual void SAL_CALL disposing( const css::lang::EventObject& Source ) override;
+
+ private:
+ /** ensures that the window's Enabled state matches what is described at the model
+ @precond
+ our mutex is locked
+ */
+ void impl_ensureEnabledState_nothrow_nolck();
+ };
+
+
+ WindowStateGuard_Impl::WindowStateGuard_Impl( const Reference< XWindow2 >& _rxWindow, const Reference< XPropertySet >& _rxMdelProps )
+ :m_xWindow( _rxWindow )
+ ,m_xModelProps( _rxMdelProps )
+ {
+ if ( !m_xWindow.is() || !m_xModelProps.is() )
+ throw RuntimeException();
+
+ osl_atomic_increment( &m_refCount );
+ {
+ m_xWindow->addWindowListener( this );
+ }
+ osl_atomic_decrement( &m_refCount );
+ }
+
+
+ void WindowStateGuard_Impl::dispose()
+ {
+ ::osl::MutexGuard aGuard( m_aMutex );
+ if ( !m_xWindow.is() )
+ // already disposed
+ return;
+
+ m_xWindow->removeWindowListener( this );
+ m_xWindow.clear();
+ }
+
+
+ void WindowStateGuard_Impl::impl_ensureEnabledState_nothrow_nolck()
+ {
+ try
+ {
+ Reference< XWindow2 > xWindow;
+ Reference< XPropertySet > xModelProps;
+ bool bShouldBeEnabled = false;
+ {
+ ::osl::MutexGuard aGuard( m_aMutex );
+ if ( !m_xWindow.is() || !m_xModelProps.is() )
+ return;
+ xWindow = m_xWindow;
+ xModelProps = m_xModelProps;
+ }
+ // fdo#42157: do not lock m_aMutex to prevent deadlock
+ bool const bEnabled = xWindow->isEnabled();
+ OSL_VERIFY( xModelProps->getPropertyValue( PROPERTY_ENABLED )
+ >>= bShouldBeEnabled );
+
+ if ( !bShouldBeEnabled && bEnabled )
+ xWindow->setEnable( false );
+ }
+ catch( const Exception& )
+ {
+ DBG_UNHANDLED_EXCEPTION("forms.helper");
+ }
+ }
+
+
+ void SAL_CALL WindowStateGuard_Impl::windowEnabled( const EventObject& /*e*/ )
+ {
+ impl_ensureEnabledState_nothrow_nolck();
+ }
+
+
+ void SAL_CALL WindowStateGuard_Impl::windowDisabled( const EventObject& /*e*/ )
+ {
+ impl_ensureEnabledState_nothrow_nolck();
+ }
+
+
+ void SAL_CALL WindowStateGuard_Impl::windowResized( const WindowEvent& /*e*/ )
+ {
+ // not interested in
+ }
+
+
+ void SAL_CALL WindowStateGuard_Impl::windowMoved( const WindowEvent& /*e*/ )
+ {
+ // not interested in
+ }
+
+
+ void SAL_CALL WindowStateGuard_Impl::windowShown( const EventObject& /*e*/ )
+ {
+ // not interested in
+ }
+
+
+ void SAL_CALL WindowStateGuard_Impl::windowHidden( const EventObject& /*e*/ )
+ {
+ // not interested in
+ }
+
+
+ void SAL_CALL WindowStateGuard_Impl::disposing( const EventObject& Source )
+ {
+ OSL_ENSURE( Source.Source == m_xWindow, "WindowStateGuard_Impl::disposing: where does this come from?" );
+ dispose();
+ }
+
+ WindowStateGuard::WindowStateGuard()
+ {
+ }
+
+
+ WindowStateGuard::~WindowStateGuard()
+ {
+ }
+
+
+ void WindowStateGuard::attach( const Reference< XWindow2 >& _rxWindow, const Reference< XControlModel >& _rxModel )
+ {
+ if ( m_pImpl.is() )
+ {
+ m_pImpl->dispose();
+ m_pImpl = nullptr;
+ }
+
+ Reference< XPropertySet > xModelProps( _rxModel, UNO_QUERY );
+ OSL_ENSURE( xModelProps.is() || !_rxModel.is(), "WindowStateGuard::attach: a model which is no XPropertySet?" );
+ if ( _rxWindow.is() && xModelProps.is() )
+ m_pImpl = new WindowStateGuard_Impl( _rxWindow, xModelProps );
+ }
+
+
+} // namespace frm
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */