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39 #include "qplatformaccessibility.h"
40 #include <private/qfactoryloader_p.h>
41 #include "qaccessibleplugin.h"
42 #include "qaccessibleobject.h"
43 #include "qaccessiblebridge.h"
44 #include <QtGui/QGuiApplication>
45
46 #include <QDebug>
47
48 QT_BEGIN_NAMESPACE
49
50 #ifndef QT_NO_ACCESSIBILITY
51
52 /* accessiblebridge plugin discovery stuff */
53 Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, bridgeloader,
54 (QAccessibleBridgeFactoryInterface_iid, QLatin1String("/accessiblebridge")))
55
Q_GLOBAL_STATIC(QVector<QAccessibleBridge * >,bridges)56 Q_GLOBAL_STATIC(QVector<QAccessibleBridge *>, bridges)
57
58 /*!
59 \class QPlatformAccessibility
60 \since 5.0
61 \internal
62 \preliminary
63 \ingroup qpa
64 \ingroup accessibility
65
66 \brief The QPlatformAccessibility class is the base class for
67 integrating accessibility backends
68
69 \sa QAccessible
70 */
71 QPlatformAccessibility::QPlatformAccessibility()
72 : m_active(false)
73 {
74 }
75
~QPlatformAccessibility()76 QPlatformAccessibility::~QPlatformAccessibility()
77 {
78 }
79
notifyAccessibilityUpdate(QAccessibleEvent * event)80 void QPlatformAccessibility::notifyAccessibilityUpdate(QAccessibleEvent *event)
81 {
82 initialize();
83
84 if (!bridges() || bridges()->isEmpty())
85 return;
86
87 for (int i = 0; i < bridges()->count(); ++i)
88 bridges()->at(i)->notifyAccessibilityUpdate(event);
89 }
90
setRootObject(QObject * o)91 void QPlatformAccessibility::setRootObject(QObject *o)
92 {
93 initialize();
94 if (bridges()->isEmpty())
95 return;
96
97 if (!o)
98 return;
99
100 for (int i = 0; i < bridges()->count(); ++i) {
101 QAccessibleInterface *iface = QAccessible::queryAccessibleInterface(o);
102 bridges()->at(i)->setRootObject(iface);
103 }
104 }
105
initialize()106 void QPlatformAccessibility::initialize()
107 {
108 static bool isInit = false;
109 if (isInit)
110 return;
111 isInit = true; // ### not atomic
112
113 typedef QMultiMap<int, QString> PluginKeyMap;
114 typedef PluginKeyMap::const_iterator PluginKeyMapConstIterator;
115
116 const PluginKeyMap keyMap = bridgeloader()->keyMap();
117 QAccessibleBridgePlugin *factory = nullptr;
118 int i = -1;
119 const PluginKeyMapConstIterator cend = keyMap.constEnd();
120 for (PluginKeyMapConstIterator it = keyMap.constBegin(); it != cend; ++it) {
121 if (it.key() != i) {
122 i = it.key();
123 factory = qobject_cast<QAccessibleBridgePlugin*>(bridgeloader()->instance(i));
124 }
125 if (factory)
126 if (QAccessibleBridge *bridge = factory->create(it.value()))
127 bridges()->append(bridge);
128 }
129 }
130
cleanup()131 void QPlatformAccessibility::cleanup()
132 {
133 qDeleteAll(*bridges());
134 }
135
setActive(bool active)136 void QPlatformAccessibility::setActive(bool active)
137 {
138 m_active = active;
139 QAccessible::setActive(active);
140 }
141
142 #endif // QT_NO_ACCESSIBILITY
143
144 QT_END_NAMESPACE
145