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
|
/* -*- 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 <svl/lstner.hxx>
#include <svl/hint.hxx>
#include <svl/SfxBroadcaster.hxx>
#include <algorithm>
#include <cassert>
#include <deque>
TYPEINIT0(SfxListener);
typedef std::deque<SfxBroadcaster*> SfxBroadcasterArr_Impl;
struct SfxListener::Impl
{
SfxBroadcasterArr_Impl maBCs;
};
// simple ctor of class SfxListener
SfxListener::SfxListener() : mpImpl(new Impl)
{
}
// copy ctor of class SfxListener
SfxListener::SfxListener( const SfxListener &rListener ) : mpImpl(new Impl)
{
for ( size_t n = 0; n < rListener.mpImpl->maBCs.size(); ++n )
StartListening( *rListener.mpImpl->maBCs[n] );
}
// unregisters the SfxListener from its SfxBroadcasters
SfxListener::~SfxListener()
{
// unregister at all remaining broadcasters
for ( size_t nPos = 0; nPos < mpImpl->maBCs.size(); ++nPos )
{
SfxBroadcaster *pBC = mpImpl->maBCs[nPos];
pBC->RemoveListener(*this);
}
delete mpImpl;
}
// unregisters a specific SfxBroadcaster
void SfxListener::RemoveBroadcaster_Impl( SfxBroadcaster& rBroadcaster )
{
auto it = std::find( mpImpl->maBCs.begin(), mpImpl->maBCs.end(), &rBroadcaster );
if (it != mpImpl->maBCs.end()) {
mpImpl->maBCs.erase( it );
}
}
// registers a specific SfxBroadcaster
void SfxListener::StartListening( SfxBroadcaster& rBroadcaster, bool bPreventDups )
{
if ( !bPreventDups || !IsListening( rBroadcaster ) )
{
rBroadcaster.AddListener(*this);
mpImpl->maBCs.push_back( &rBroadcaster );
assert(IsListening(rBroadcaster) && "StartListening failed");
}
}
// unregisters a specific SfxBroadcaster
void SfxListener::EndListening( SfxBroadcaster& rBroadcaster, bool bAllDups )
{
SfxBroadcasterArr_Impl::iterator beginIt = mpImpl->maBCs.begin();
do
{
SfxBroadcasterArr_Impl::iterator it = std::find( beginIt, mpImpl->maBCs.end(), &rBroadcaster );
if ( it == mpImpl->maBCs.end() )
{
break;
}
rBroadcaster.RemoveListener(*this);
beginIt = mpImpl->maBCs.erase( it );
}
while ( bAllDups );
}
// unregisters all Broadcasters
void SfxListener::EndListeningAll()
{
// Attention: when optimizing this: Respect sideffects of RemoveListener!
while ( !mpImpl->maBCs.empty() )
{
SfxBroadcaster *pBC = mpImpl->maBCs.front();
pBC->RemoveListener(*this);
mpImpl->maBCs.pop_front();
}
}
bool SfxListener::IsListening( SfxBroadcaster& rBroadcaster ) const
{
return mpImpl->maBCs.end() != std::find( mpImpl->maBCs.begin(), mpImpl->maBCs.end(), &rBroadcaster );
}
sal_uInt16 SfxListener::GetBroadcasterCount() const
{
return mpImpl->maBCs.size();
}
SfxBroadcaster* SfxListener::GetBroadcasterJOE( sal_uInt16 nNo ) const
{
return mpImpl->maBCs[nNo];
}
// base implementation of notification handler
void SfxListener::Notify( SfxBroadcaster& rBroadcaster, const SfxHint& )
{
(void) rBroadcaster;
assert(IsListening(rBroadcaster));
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
