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1 : : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : : /*
3 : : * This file is part of the LibreOffice project.
4 : : *
5 : : * This Source Code Form is subject to the terms of the Mozilla Public
6 : : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : : *
9 : : * This file incorporates work covered by the following license notice:
10 : : *
11 : : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : : * contributor license agreements. See the NOTICE file distributed
13 : : * with this work for additional information regarding copyright
14 : : * ownership. The ASF licenses this file to you under the Apache
15 : : * License, Version 2.0 (the "License"); you may not use this file
16 : : * except in compliance with the License. You may obtain a copy of
17 : : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : : */
19 : : #ifndef CHART2_WEAKLISTENERADAPTER_HXX
20 : : #define CHART2_WEAKLISTENERADAPTER_HXX
21 : :
22 : : #include <com/sun/star/uno/XWeak.hpp>
23 : : #include <com/sun/star/lang/XEventListener.hpp>
24 : : #include <com/sun/star/util/XModifyListener.hpp>
25 : : #include <com/sun/star/view/XSelectionChangeListener.hpp>
26 : : #include <cppuhelper/weakref.hxx>
27 : : #include <cppuhelper/implbase1.hxx>
28 : :
29 : : namespace chart
30 : : {
31 : : // --------------------------------------------------------------------------------
32 : :
33 : : /** Adapter that enables adding listeners as weak UNO references. Thus, adding
34 : : an object as listener to a broadcaster does not increase its reference
35 : : count.
36 : :
37 : : <p>The helper class, of course, is held as hard reference at the
38 : : broadcaster, but this should never be a problem as the adapter's life time
39 : : depends on no other object.</p>
40 : :
41 : : <p>Note that in order to remove an object as listener, you have to remove
42 : : the same wrapper that you added, i.e., you should store the adapter as a
43 : : member in the adaptee class for later use.</p>
44 : : */
45 : : template< class Listener >
46 : : class WeakListenerAdapter : public
47 : : ::cppu::WeakImplHelper1< Listener >
48 : : {
49 : : public:
50 : 0 : explicit WeakListenerAdapter( const ::com::sun::star::uno::Reference< Listener > & xListener ) :
51 [ # # ]: 0 : m_xListener( xListener )
52 : 0 : {}
53 : 15662 : explicit WeakListenerAdapter( const ::com::sun::star::uno::WeakReference< Listener > & xListener ) :
54 [ + - ]: 15662 : m_xListener( xListener )
55 : 15662 : {}
56 : 15662 : virtual ~WeakListenerAdapter()
57 [ # # ][ # # ]: 15662 : {}
[ + - ][ - + ]
58 : :
59 : : protected:
60 : : // ____ XEventListener (base of all listeners) ____
61 : 146 : virtual void SAL_CALL disposing(
62 : : const ::com::sun::star::lang::EventObject& Source )
63 : : throw (::com::sun::star::uno::RuntimeException)
64 : : {
65 : : ::com::sun::star::uno::Reference<
66 : : ::com::sun::star::lang::XEventListener > xEventListener =
67 : : ::com::sun::star::uno::Reference<
68 : : ::com::sun::star::lang::XEventListener >(
69 [ + - ][ + - ]: 146 : ::com::sun::star::uno::Reference< Listener >( m_xListener), ::com::sun::star::uno::UNO_QUERY );
[ # # ][ # # ]
70 [ + + # # ]: 146 : if( xEventListener.is())
71 [ + - ][ + - ]: 146 : xEventListener->disposing( Source );
[ # # ][ # # ]
72 : 146 : }
73 : :
74 : 20069 : ::com::sun::star::uno::Reference< Listener > getListener() const
75 : : {
76 : 20069 : return m_xListener;
77 : : }
78 : :
79 : : private:
80 : : ::com::sun::star::uno::WeakReference< Listener > m_xListener;
81 : : };
82 : :
83 : : // --------------------------------------------------------------------------------
84 : :
85 : : class WeakModifyListenerAdapter :
86 : : public WeakListenerAdapter< ::com::sun::star::util::XModifyListener >
87 : : {
88 : : public:
89 : : explicit WeakModifyListenerAdapter(
90 : : const ::com::sun::star::uno::WeakReference< ::com::sun::star::util::XModifyListener > & xListener );
91 : : virtual ~WeakModifyListenerAdapter();
92 : :
93 : : protected:
94 : : // ____ XModifyListener ____
95 : : virtual void SAL_CALL modified( const ::com::sun::star::lang::EventObject& aEvent )
96 : : throw (::com::sun::star::uno::RuntimeException);
97 : : };
98 : :
99 : : // --------------------------------------------------------------------------------
100 : :
101 : : class WeakSelectionChangeListenerAdapter :
102 : : public WeakListenerAdapter< ::com::sun::star::view::XSelectionChangeListener >
103 : : {
104 : : public:
105 : : explicit WeakSelectionChangeListenerAdapter(
106 : : const ::com::sun::star::uno::Reference< ::com::sun::star::view::XSelectionChangeListener > & xListener );
107 : : virtual ~WeakSelectionChangeListenerAdapter();
108 : :
109 : : protected:
110 : : // ____ XSelectionChangeListener ____
111 : : virtual void SAL_CALL selectionChanged(
112 : : const ::com::sun::star::lang::EventObject& aEvent )
113 : : throw (::com::sun::star::uno::RuntimeException);
114 : : };
115 : :
116 : : } // namespace chart
117 : :
118 : : // CHART2_WEAKLISTENERADAPTER_HXX
119 : : #endif
120 : :
121 : : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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