235 lines
9.3 KiB
C++
235 lines
9.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but 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 Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#include "windowstateguard.hxx"
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#include "frm_strings.hxx"
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/** === begin UNO includes === **/
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#include <com/sun/star/awt/XWindowListener2.hpp>
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#include <com/sun/star/beans/XPropertySet.hpp>
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/** === end UNO includes === **/
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#include <cppuhelper/implbase1.hxx>
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#include <tools/diagnose_ex.h>
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//........................................................................
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namespace frm
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{
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//........................................................................
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/** === begin UNO using === **/
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using ::com::sun::star::awt::XWindowListener2;
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using ::com::sun::star::uno::Reference;
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using ::com::sun::star::awt::XWindow2;
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using ::com::sun::star::awt::WindowEvent;
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using ::com::sun::star::uno::RuntimeException;
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using ::com::sun::star::awt::XControlModel;
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using ::com::sun::star::beans::XPropertySet;
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using ::com::sun::star::lang::EventObject;
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using ::com::sun::star::uno::RuntimeException;
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using ::com::sun::star::uno::UNO_QUERY;
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using ::com::sun::star::uno::Exception;
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/** === end UNO using === **/
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//====================================================================
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//= WindowStateGuard_Impl
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//====================================================================
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typedef ::cppu::WeakImplHelper1 < XWindowListener2
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> WindowStateGuard_Impl_Base;
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class WindowStateGuard_Impl : public WindowStateGuard_Impl_Base
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{
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private:
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::osl::Mutex m_aMutex;
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Reference< XWindow2 > m_xWindow;
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Reference< XPropertySet > m_xModelProps;
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public:
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/** constructs the instance
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@param _rxWindow
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the window at which to listen. Must not be <NULL/>.
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@param _rxModel
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the model which acts as the reference for the states to be enforced. Must not be <NULL/>.
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*/
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WindowStateGuard_Impl( const Reference< XWindow2 >& _rxWindow, const Reference< XPropertySet >& _rxMdelProps );
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void dispose();
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protected:
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// XWindowListener2
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virtual void SAL_CALL windowEnabled( const ::com::sun::star::lang::EventObject& e ) throw (::com::sun::star::uno::RuntimeException);
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virtual void SAL_CALL windowDisabled( const ::com::sun::star::lang::EventObject& e ) throw (::com::sun::star::uno::RuntimeException);
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// XWindowListener
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virtual void SAL_CALL windowResized( const ::com::sun::star::awt::WindowEvent& e ) throw (::com::sun::star::uno::RuntimeException);
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virtual void SAL_CALL windowMoved( const ::com::sun::star::awt::WindowEvent& e ) throw (::com::sun::star::uno::RuntimeException);
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virtual void SAL_CALL windowShown( const ::com::sun::star::lang::EventObject& e ) throw (::com::sun::star::uno::RuntimeException);
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virtual void SAL_CALL windowHidden( const ::com::sun::star::lang::EventObject& e ) throw (::com::sun::star::uno::RuntimeException);
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// XEventListener
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virtual void SAL_CALL disposing( const ::com::sun::star::lang::EventObject& Source ) throw (::com::sun::star::uno::RuntimeException);
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private:
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/** ensures that the window's Enabled state matches what is described at the model
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@precond
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our mutex is locked
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*/
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void impl_ensureEnabledState_nothrow_nolck();
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};
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//--------------------------------------------------------------------
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WindowStateGuard_Impl::WindowStateGuard_Impl( const Reference< XWindow2 >& _rxWindow, const Reference< XPropertySet >& _rxMdelProps )
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:m_xWindow( _rxWindow )
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,m_xModelProps( _rxMdelProps )
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{
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if ( !m_xWindow.is() || !m_xModelProps.is() )
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throw RuntimeException();
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osl_incrementInterlockedCount( &m_refCount );
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{
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m_xWindow->addWindowListener( this );
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}
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osl_decrementInterlockedCount( &m_refCount );
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}
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//--------------------------------------------------------------------
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void WindowStateGuard_Impl::dispose()
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( !m_xWindow.is() )
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// already disposed
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return;
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m_xWindow->removeWindowListener( this );
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m_xWindow.clear();
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}
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//--------------------------------------------------------------------
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void WindowStateGuard_Impl::impl_ensureEnabledState_nothrow_nolck()
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{
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try
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{
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Reference< XWindow2 > xWindow;
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Reference< XPropertySet > xModelProps;
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sal_Bool bShouldBeEnabled = sal_False;
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( !m_xWindow.is() || !m_xModelProps.is() )
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return;
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xWindow = m_xWindow;
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xModelProps = m_xModelProps;
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}
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// fdo#42157: do not lock m_aMutex to prevent deadlock
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bool const bEnabled = xWindow->isEnabled();
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OSL_VERIFY( xModelProps->getPropertyValue( PROPERTY_ENABLED )
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>>= bShouldBeEnabled );
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if ( !bShouldBeEnabled && bEnabled )
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xWindow->setEnable( sal_False );
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}
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catch( const Exception& )
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{
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DBG_UNHANDLED_EXCEPTION();
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}
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}
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//--------------------------------------------------------------------
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void SAL_CALL WindowStateGuard_Impl::windowEnabled( const EventObject& /*e*/ ) throw (RuntimeException)
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{
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impl_ensureEnabledState_nothrow_nolck();
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}
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//--------------------------------------------------------------------
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void SAL_CALL WindowStateGuard_Impl::windowDisabled( const EventObject& /*e*/ ) throw (RuntimeException)
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{
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impl_ensureEnabledState_nothrow_nolck();
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}
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//--------------------------------------------------------------------
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void SAL_CALL WindowStateGuard_Impl::windowResized( const WindowEvent& /*e*/ ) throw (RuntimeException)
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{
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// not interested in
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}
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//--------------------------------------------------------------------
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void SAL_CALL WindowStateGuard_Impl::windowMoved( const WindowEvent& /*e*/ ) throw (RuntimeException)
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{
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// not interested in
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}
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//--------------------------------------------------------------------
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void SAL_CALL WindowStateGuard_Impl::windowShown( const EventObject& /*e*/ ) throw (RuntimeException)
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{
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// not interested in
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}
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//--------------------------------------------------------------------
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void SAL_CALL WindowStateGuard_Impl::windowHidden( const EventObject& /*e*/ ) throw (RuntimeException)
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{
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// not interested in
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}
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//--------------------------------------------------------------------
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void SAL_CALL WindowStateGuard_Impl::disposing( const EventObject& Source ) throw (RuntimeException)
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{
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OSL_ENSURE( Source.Source == m_xWindow, "WindowStateGuard_Impl::disposing: where does this come from?" );
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(void)Source;
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dispose();
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}
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//====================================================================
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//= WindowStateGuard
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//====================================================================
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//--------------------------------------------------------------------
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WindowStateGuard::WindowStateGuard()
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{
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}
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//--------------------------------------------------------------------
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WindowStateGuard::~WindowStateGuard()
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{
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}
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//--------------------------------------------------------------------
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void WindowStateGuard::attach( const Reference< XWindow2 >& _rxWindow, const Reference< XControlModel >& _rxModel )
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{
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if ( m_pImpl.is() )
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{
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m_pImpl->dispose();
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m_pImpl = NULL;
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}
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Reference< XPropertySet > xModelProps( _rxModel, UNO_QUERY );
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OSL_ENSURE( xModelProps.is() || !_rxModel.is(), "WindowStateGuard::attach: a model which is no XPropertySet?" );
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if ( _rxWindow.is() && xModelProps.is() )
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m_pImpl = new WindowStateGuard_Impl( _rxWindow, xModelProps );
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}
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//........................................................................
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} // namespace frm
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//........................................................................
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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