blob: ed7d2932abb9efc5ed855347a3de4973ec91de5a (
plain)
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
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/* -*- 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 <windowstateguard.hxx>
#include <frm_strings.hxx>
#include <com/sun/star/awt/XWindowListener2.hpp>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <cppuhelper/implbase.hxx>
#include <comphelper/diagnose_ex.hxx>
namespace frm
{
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::UNO_QUERY;
using ::com::sun::star::uno::Exception;
typedef ::cppu::WeakImplHelper < 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 css::lang::EventObject& e ) override;
virtual void SAL_CALL windowDisabled( const css::lang::EventObject& e ) override;
// XWindowListener
virtual void SAL_CALL windowResized( const css::awt::WindowEvent& e ) override;
virtual void SAL_CALL windowMoved( const css::awt::WindowEvent& e ) override;
virtual void SAL_CALL windowShown( const css::lang::EventObject& e ) override;
virtual void SAL_CALL windowHidden( const css::lang::EventObject& e ) override;
// XEventListener
virtual void SAL_CALL disposing( const css::lang::EventObject& Source ) override;
private:
/** ensures that the window's Enabled state matches what is described at the model
@precond
our mutex is locked
*/
void impl_ensureEnabledState_nothrow_nolck();
};
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_atomic_increment( &m_refCount );
{
m_xWindow->addWindowListener( this );
}
osl_atomic_decrement( &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_nolck()
{
try
{
Reference< XWindow2 > xWindow;
Reference< XPropertySet > xModelProps;
bool bShouldBeEnabled = false;
{
::osl::MutexGuard aGuard( m_aMutex );
if ( !m_xWindow.is() || !m_xModelProps.is() )
return;
xWindow = m_xWindow;
xModelProps = m_xModelProps;
}
// fdo#42157: do not lock m_aMutex to prevent deadlock
bool const bEnabled = xWindow->isEnabled();
OSL_VERIFY( xModelProps->getPropertyValue( PROPERTY_ENABLED )
>>= bShouldBeEnabled );
if ( !bShouldBeEnabled && bEnabled )
xWindow->setEnable( false );
}
catch( const Exception& )
{
DBG_UNHANDLED_EXCEPTION("forms.helper");
}
}
void SAL_CALL WindowStateGuard_Impl::windowEnabled( const EventObject& /*e*/ )
{
impl_ensureEnabledState_nothrow_nolck();
}
void SAL_CALL WindowStateGuard_Impl::windowDisabled( const EventObject& /*e*/ )
{
impl_ensureEnabledState_nothrow_nolck();
}
void SAL_CALL WindowStateGuard_Impl::windowResized( const WindowEvent& /*e*/ )
{
// not interested in
}
void SAL_CALL WindowStateGuard_Impl::windowMoved( const WindowEvent& /*e*/ )
{
// not interested in
}
void SAL_CALL WindowStateGuard_Impl::windowShown( const EventObject& /*e*/ )
{
// not interested in
}
void SAL_CALL WindowStateGuard_Impl::windowHidden( const EventObject& /*e*/ )
{
// not interested in
}
void SAL_CALL WindowStateGuard_Impl::disposing( const EventObject& Source )
{
OSL_ENSURE( Source.Source == m_xWindow, "WindowStateGuard_Impl::disposing: where does this come from?" );
dispose();
}
WindowStateGuard::WindowStateGuard()
{
}
WindowStateGuard::~WindowStateGuard()
{
}
void WindowStateGuard::attach( const Reference< XWindow2 >& _rxWindow, const Reference< XControlModel >& _rxModel )
{
if ( m_pImpl.is() )
{
m_pImpl->dispose();
m_pImpl = nullptr;
}
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: */
|
