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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
#include <sal/config.h>
#include <osl/diagnose.h>
#include <unotools/sharedunocomponent.hxx>
#include <com/sun/star/lang/XComponent.hpp>
#include <com/sun/star/util/CloseVetoException.hpp>
#include <com/sun/star/util/XCloseable.hpp>
#include <cppuhelper/implbase.hxx>
#include <tools/debug.hxx>
#include <comphelper/diagnose_ex.hxx>
namespace utl
{
using ::com::sun::star::uno::XInterface;
using ::com::sun::star::uno::Reference;
using ::com::sun::star::uno::Exception;
using ::com::sun::star::uno::UNO_QUERY;
using ::com::sun::star::lang::EventObject;
using ::com::sun::star::util::XCloseable;
using ::com::sun::star::util::XCloseListener;
using ::com::sun::star::util::CloseVetoException;
//= DisposableComponent
DisposableComponent::DisposableComponent( const Reference< XInterface >& _rxComponent )
:m_xComponent( _rxComponent, UNO_QUERY )
{
DBG_ASSERT( m_xComponent.is() || !_rxComponent.is(), "DisposableComponent::DisposableComponent: should be an XComponent!" );
}
DisposableComponent::~DisposableComponent()
{
if ( m_xComponent.is() )
{
try
{
m_xComponent->dispose();
}
catch( const Exception& )
{
TOOLS_WARN_EXCEPTION( "unotools", "DisposableComponent::~DisposableComponent" );
}
m_xComponent.clear();
}
}
typedef ::cppu::WeakImplHelper < XCloseListener
> CloseableComponentImpl_Base;
class CloseableComponentImpl : public CloseableComponentImpl_Base
{
private:
Reference< XCloseable > m_xCloseable;
CloseableComponentImpl(const CloseableComponentImpl&) = delete;
CloseableComponentImpl& operator=(const CloseableComponentImpl&) = delete;
public:
explicit CloseableComponentImpl( const Reference< XInterface >& _rxComponent );
/** closes the component
@nofail
*/
void nf_closeComponent();
protected:
virtual ~CloseableComponentImpl() override;
// XCloseListener overridables
virtual void SAL_CALL queryClosing( const EventObject& Source, sal_Bool GetsOwnership ) override;
virtual void SAL_CALL notifyClosing( const EventObject& Source ) override;
// XEventListener overridables
virtual void SAL_CALL disposing( const css::lang::EventObject& Source ) override;
private:
/** starts or stops being a CloseListener at the component
Only to be called upon construction of the instance, or when the component
is to be closed.
@nofail
*/
void impl_nf_switchListening( bool _bListen );
};
CloseableComponentImpl::CloseableComponentImpl( const Reference< XInterface >& _rxComponent )
:m_xCloseable( _rxComponent, UNO_QUERY )
{
DBG_ASSERT( m_xCloseable.is() || !_rxComponent.is(), "CloseableComponentImpl::CloseableComponentImpl: component is not an XCloseable!" );
impl_nf_switchListening( true );
}
CloseableComponentImpl::~CloseableComponentImpl()
{
nf_closeComponent();
}
void CloseableComponentImpl::nf_closeComponent()
{
if ( !m_xCloseable.is() )
// nothing to do
return;
// stop listening
impl_nf_switchListening( false );
// close
try
{
m_xCloseable->close( true );
}
catch( const CloseVetoException& ) { /* fine */ }
catch( const Exception& )
{
TOOLS_WARN_EXCEPTION( "unotools", "CloseableComponentImpl::nf_closeComponent: caught an unexpected exception!" );
}
// reset
m_xCloseable.clear();
}
void CloseableComponentImpl::impl_nf_switchListening( bool _bListen )
{
if ( !m_xCloseable.is() )
return;
try
{
if ( _bListen )
m_xCloseable->addCloseListener( this );
else
m_xCloseable->removeCloseListener( this );
}
catch( const Exception& )
{
TOOLS_WARN_EXCEPTION( "unotools", "CloseableComponentImpl::impl_nf_switchListening" );
}
}
void SAL_CALL CloseableComponentImpl::queryClosing( const EventObject& Source, sal_Bool /*GetsOwnership*/ )
{
// as long as we live, somebody wants to keep the object alive. So, veto the
// closing
DBG_ASSERT( Source.Source == m_xCloseable, "CloseableComponentImpl::queryClosing: where did this come from?" );
throw CloseVetoException();
}
void SAL_CALL CloseableComponentImpl::notifyClosing( const EventObject& Source )
{
DBG_ASSERT( Source.Source == m_xCloseable, "CloseableComponentImpl::notifyClosing: where did this come from?" );
// this should be unreachable: As long as we're a CloseListener, we veto the closing. If we're going
// to close the component ourself, then we revoke ourself as listener *before* the close call. So,
// if this here fires, something went definitely wrong.
OSL_FAIL( "CloseableComponentImpl::notifyClosing: unreachable!" );
}
void SAL_CALL CloseableComponentImpl::disposing( const EventObject& Source )
{
DBG_ASSERT( Source.Source == m_xCloseable, "CloseableComponentImpl::disposing: where did this come from?" );
OSL_FAIL( "CloseableComponentImpl::disposing: unreachable!" );
// same reasoning for this assertion as in ->notifyClosing
}
CloseableComponent::CloseableComponent( const Reference< XInterface >& _rxComponent )
:m_pImpl( new CloseableComponentImpl( _rxComponent ) )
{
}
CloseableComponent::~CloseableComponent()
{
// close the component, deliver ownership to anybody who wants to veto the close
m_pImpl->nf_closeComponent();
}
} // namespace utl
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
