1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: WeakListenerAdapter.hxx,v $
* $Revision: 1.4.44.1 $
*
* 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.
*
************************************************************************/
#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
|
