blob: 4f96072d8e853baaac97dfa03ee38e15d090ae38 (
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
|
/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#include <QtGui/qtguiglobal.h>
#if QT_CONFIG(accessibility)
#include "qwinrtuiaprovidercache.h"
QT_BEGIN_NAMESPACE
// Private constructor
QWinRTUiaProviderCache::QWinRTUiaProviderCache()
{
}
// shared instance
QWinRTUiaProviderCache *QWinRTUiaProviderCache::instance()
{
static QWinRTUiaProviderCache providerCache;
return &providerCache;
}
// Returns the provider instance associated with the ID, or nullptr.
QWinRTUiaBaseProvider *QWinRTUiaProviderCache::providerForId(QAccessible::Id id) const
{
return m_providerTable.value(id);
}
// Inserts a provider in the cache and associates it with an accessibility ID.
void QWinRTUiaProviderCache::insert(QAccessible::Id id, QWinRTUiaBaseProvider *provider)
{
remove(id);
if (provider) {
m_providerTable[id] = provider;
m_inverseTable[provider] = id;
// Connects the destroyed signal to our slot, to remove deleted objects from the cache.
QObject::connect(provider, &QObject::destroyed, this, &QWinRTUiaProviderCache::objectDestroyed);
}
}
// Removes deleted provider objects from the cache.
void QWinRTUiaProviderCache::objectDestroyed(QObject *obj)
{
// We have to use the inverse table to map the object address back to its ID,
// since at this point (called from QObject destructor), it has already been
// partially destroyed and we cannot treat it as a provider.
auto it = m_inverseTable.find(obj);
if (it != m_inverseTable.end()) {
m_providerTable.remove(*it);
m_inverseTable.remove(obj);
}
}
// Removes a provider with a given id from the cache.
void QWinRTUiaProviderCache::remove(QAccessible::Id id)
{
m_inverseTable.remove(m_providerTable.value(id));
m_providerTable.remove(id);
}
QT_END_NAMESPACE
#endif // QT_CONFIG(accessibility)
|