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Diffstat (limited to 'forms/source/helper/windowstateguard.cxx')
| -rw-r--r-- | forms/source/helper/windowstateguard.cxx | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/forms/source/helper/windowstateguard.cxx b/forms/source/helper/windowstateguard.cxx new file mode 100644 index 000000000000..a35ebd68ff44 --- /dev/null +++ b/forms/source/helper/windowstateguard.cxx @@ -0,0 +1,228 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_forms.hxx" +#include "windowstateguard.hxx" +#include "frm_strings.hxx" + +/** === begin UNO includes === **/ +#include <com/sun/star/awt/XWindowListener2.hpp> +#include <com/sun/star/beans/XPropertySet.hpp> +/** === end UNO includes === **/ +#include <cppuhelper/implbase1.hxx> +#include <tools/diagnose_ex.h> + +//........................................................................ +namespace frm +{ +//........................................................................ + + /** === begin UNO using === **/ + 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::RuntimeException; + using ::com::sun::star::uno::UNO_QUERY; + using ::com::sun::star::uno::Exception; + /** === end UNO using === **/ + + //==================================================================== + //= WindowStateGuard_Impl + //==================================================================== + typedef ::cppu::WeakImplHelper1 < 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 ::com::sun::star::lang::EventObject& e ) throw (::com::sun::star::uno::RuntimeException); + virtual void SAL_CALL windowDisabled( const ::com::sun::star::lang::EventObject& e ) throw (::com::sun::star::uno::RuntimeException); + + // XWindowListener + virtual void SAL_CALL windowResized( const ::com::sun::star::awt::WindowEvent& e ) throw (::com::sun::star::uno::RuntimeException); + virtual void SAL_CALL windowMoved( const ::com::sun::star::awt::WindowEvent& e ) throw (::com::sun::star::uno::RuntimeException); + virtual void SAL_CALL windowShown( const ::com::sun::star::lang::EventObject& e ) throw (::com::sun::star::uno::RuntimeException); + virtual void SAL_CALL windowHidden( const ::com::sun::star::lang::EventObject& e ) throw (::com::sun::star::uno::RuntimeException); + + // XEventListener + virtual void SAL_CALL disposing( const ::com::sun::star::lang::EventObject& Source ) throw (::com::sun::star::uno::RuntimeException); + + private: + /** ensures that the window's Enabled state matches what is described at the model + @precond + our mutex is locked + */ + void impl_ensureEnabledState_nothrow() const; + }; + + //-------------------------------------------------------------------- + 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_incrementInterlockedCount( &m_refCount ); + { + m_xWindow->addWindowListener( this ); + } + osl_decrementInterlockedCount( &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() const + { + try + { + sal_Bool bEnabled = m_xWindow->isEnabled(); + sal_Bool bShouldBeEnabled = sal_False; + OSL_VERIFY( m_xModelProps->getPropertyValue( PROPERTY_ENABLED ) >>= bShouldBeEnabled ); + + if ( !bShouldBeEnabled && bEnabled ) + m_xWindow->setEnable( sal_False ); + } + catch( const Exception& ) + { + DBG_UNHANDLED_EXCEPTION(); + } + } + + //-------------------------------------------------------------------- + void SAL_CALL WindowStateGuard_Impl::windowEnabled( const EventObject& /*e*/ ) throw (RuntimeException) + { + ::osl::MutexGuard aGuard( m_aMutex ); + impl_ensureEnabledState_nothrow(); + } + + //-------------------------------------------------------------------- + void SAL_CALL WindowStateGuard_Impl::windowDisabled( const EventObject& /*e*/ ) throw (RuntimeException) + { + ::osl::MutexGuard aGuard( m_aMutex ); + impl_ensureEnabledState_nothrow(); + } + + //-------------------------------------------------------------------- + void SAL_CALL WindowStateGuard_Impl::windowResized( const WindowEvent& /*e*/ ) throw (RuntimeException) + { + // not interested in + } + + //-------------------------------------------------------------------- + void SAL_CALL WindowStateGuard_Impl::windowMoved( const WindowEvent& /*e*/ ) throw (RuntimeException) + { + // not interested in + } + + //-------------------------------------------------------------------- + void SAL_CALL WindowStateGuard_Impl::windowShown( const EventObject& /*e*/ ) throw (RuntimeException) + { + // not interested in + } + + //-------------------------------------------------------------------- + void SAL_CALL WindowStateGuard_Impl::windowHidden( const EventObject& /*e*/ ) throw (RuntimeException) + { + // not interested in + } + + //-------------------------------------------------------------------- + void SAL_CALL WindowStateGuard_Impl::disposing( const EventObject& Source ) throw (RuntimeException) + { + OSL_ENSURE( Source.Source == m_xWindow, "WindowStateGuard_Impl::disposing: where does this come from?" ); + (void)Source; + dispose(); + } + + //==================================================================== + //= WindowStateGuard + //==================================================================== + //-------------------------------------------------------------------- + WindowStateGuard::WindowStateGuard() + { + } + + //-------------------------------------------------------------------- + WindowStateGuard::~WindowStateGuard() + { + } + + //-------------------------------------------------------------------- + void WindowStateGuard::attach( const Reference< XWindow2 >& _rxWindow, const Reference< XControlModel >& _rxModel ) + { + if ( m_pImpl.is() ) + { + m_pImpl->dispose(); + m_pImpl = NULL; + } + + 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: */ |