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
|
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: http://www.qt-project.org/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qplatformaccessibility_qpa.h"
#include <private/qfactoryloader_p.h>
#include "qaccessibleplugin.h"
#include "qaccessibleobject.h"
#include "qaccessiblebridge.h"
#include <QtGui/QGuiApplication>
QT_BEGIN_NAMESPACE
/* accessiblebridge plugin discovery stuff */
#ifndef QT_NO_LIBRARY
Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, bridgeloader,
(QAccessibleBridgeFactoryInterface_iid, QLatin1String("/accessiblebridge")))
#endif
Q_GLOBAL_STATIC(QVector<QAccessibleBridge *>, bridges)
/*!
\class QPlatformAccessibility
\brief The QPlatformAccessibility class is the base class for
integrating accessibility backends
\preliminary
\ingroup accessibility
\sa QAccessible
*/
QPlatformAccessibility::QPlatformAccessibility()
{
}
QPlatformAccessibility::~QPlatformAccessibility()
{
}
void QPlatformAccessibility::notifyAccessibilityUpdate(QObject *o,
int who,
QAccessible::Event reason)
{
initialize();
if (!bridges() || bridges()->isEmpty())
return;
QAccessibleInterface *iface = QAccessible::queryAccessibleInterface(o);
if (!iface)
return;
// updates for List/Table/Tree should send child
if (who) {
QAccessibleInterface *child = iface->child(who - 1);
if (child) {
delete iface;
iface = child;
who = 0;
}
}
for (int i = 0; i < bridges()->count(); ++i)
bridges()->at(i)->notifyAccessibilityUpdate(reason, iface, who);
delete iface;
}
void QPlatformAccessibility::setRootObject(QObject *o)
{
initialize();
if (bridges()->isEmpty())
return;
if (!o)
return;
for (int i = 0; i < bridges()->count(); ++i) {
QAccessibleInterface *iface = QAccessible::queryAccessibleInterface(o);
bridges()->at(i)->setRootObject(iface);
}
}
void QPlatformAccessibility::initialize()
{
static bool isInit = false;
if (isInit)
return;
isInit = true; // ### not atomic
#ifndef QT_NO_LIBRARY
const QStringList l = bridgeloader()->keys();
for (int i = 0; i < l.count(); ++i) {
if (QAccessibleBridgeFactoryInterface *factory =
qobject_cast<QAccessibleBridgeFactoryInterface*>(bridgeloader()->instance(l.at(i)))) {
QAccessibleBridge * bridge = factory->create(l.at(i));
if (bridge) {
bridges()->append(bridge);
}
}
}
#endif
}
void QPlatformAccessibility::cleanup()
{
qDeleteAll(*bridges());
}
QT_END_NAMESPACE
|
