| /************************************************************** |
| * |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| #ifndef CHART2_WEAKLISTENERADAPTER_HXX |
| #define CHART2_WEAKLISTENERADAPTER_HXX |
| |
| #include <com/sun/star/uno/XWeak.hpp> |
| #include <com/sun/star/lang/XEventListener.hpp> |
| #include <com/sun/star/util/XModifyListener.hpp> |
| #include <com/sun/star/view/XSelectionChangeListener.hpp> |
| #include <cppuhelper/weakref.hxx> |
| #include <cppuhelper/implbase1.hxx> |
| |
| namespace chart |
| { |
| // -------------------------------------------------------------------------------- |
| |
| /** Adapter that enables adding listeners as weak UNO references. Thus, adding |
| an object as listener to a broadcaster does not increase its reference |
| count. |
| |
| <p>The helper class, of course, is held as hard reference at the |
| broadcaster, but this should never be a problem as the adapter's life time |
| depends on no other object.</p> |
| |
| <p>Note that in order to remove an object as listener, you have to remove |
| the same wrapper that you added, i.e., you should store the adapter as a |
| member in the adaptee class for later use.</p> |
| */ |
| template< class Listener > |
| class WeakListenerAdapter : public |
| ::cppu::WeakImplHelper1< Listener > |
| { |
| public: |
| explicit WeakListenerAdapter( const ::com::sun::star::uno::Reference< Listener > & xListener ) : |
| m_xListener( xListener ) |
| {} |
| explicit WeakListenerAdapter( const ::com::sun::star::uno::WeakReference< Listener > & xListener ) : |
| m_xListener( xListener ) |
| {} |
| virtual ~WeakListenerAdapter() |
| {} |
| |
| protected: |
| // ____ XEventListener (base of all listeners) ____ |
| virtual void SAL_CALL disposing( |
| const ::com::sun::star::lang::EventObject& Source ) |
| throw (::com::sun::star::uno::RuntimeException) |
| { |
| ::com::sun::star::uno::Reference< |
| ::com::sun::star::lang::XEventListener > xEventListener = |
| ::com::sun::star::uno::Reference< |
| ::com::sun::star::lang::XEventListener >( |
| ::com::sun::star::uno::Reference< Listener >( m_xListener), ::com::sun::star::uno::UNO_QUERY ); |
| if( xEventListener.is()) |
| xEventListener->disposing( Source ); |
| } |
| |
| ::com::sun::star::uno::Reference< Listener > getListener() const |
| { |
| return m_xListener; |
| } |
| |
| private: |
| ::com::sun::star::uno::WeakReference< Listener > m_xListener; |
| }; |
| |
| // -------------------------------------------------------------------------------- |
| |
| class WeakModifyListenerAdapter : |
| public WeakListenerAdapter< ::com::sun::star::util::XModifyListener > |
| { |
| public: |
| explicit WeakModifyListenerAdapter( |
| const ::com::sun::star::uno::WeakReference< ::com::sun::star::util::XModifyListener > & xListener ); |
| virtual ~WeakModifyListenerAdapter(); |
| |
| protected: |
| // ____ XModifyListener ____ |
| virtual void SAL_CALL modified( const ::com::sun::star::lang::EventObject& aEvent ) |
| throw (::com::sun::star::uno::RuntimeException); |
| }; |
| |
| // -------------------------------------------------------------------------------- |
| |
| class WeakSelectionChangeListenerAdapter : |
| public WeakListenerAdapter< ::com::sun::star::view::XSelectionChangeListener > |
| { |
| public: |
| explicit WeakSelectionChangeListenerAdapter( |
| const ::com::sun::star::uno::Reference< ::com::sun::star::view::XSelectionChangeListener > & xListener ); |
| virtual ~WeakSelectionChangeListenerAdapter(); |
| |
| protected: |
| // ____ XSelectionChangeListener ____ |
| virtual void SAL_CALL selectionChanged( |
| const ::com::sun::star::lang::EventObject& aEvent ) |
| throw (::com::sun::star::uno::RuntimeException); |
| }; |
| |
| } // namespace chart |
| |
| // CHART2_WEAKLISTENERADAPTER_HXX |
| #endif |