qaccessiblecache.cpp

Absolute File Name:

/home/qt/qt5_coco/qt5/qtbase/src/gui/accessible/qaccessiblecache.cpp

Source code

Switch to Preprocessed file

Line Source Count

1 /**************************************************************************** -

2 ** -

4 ** Contact: http://www.qt.io/licensing/ -

5 ** -

6 ** This file is part of the QtGui module of the Qt Toolkit. -

7 ** -

8 ** $QT_BEGIN_LICENSE:LGPL21$ -

9 ** Commercial License Usage -

10 ** Licensees holding valid commercial Qt licenses may use this file in -

11 ** accordance with the commercial license agreement provided with the -

12 ** Software or, alternatively, in accordance with the terms contained in -

13 ** a written agreement between you and The Qt Company. For licensing terms -

14 ** and conditions see http://www.qt.io/terms-conditions. For further -

15 ** information use the contact form at http://www.qt.io/contact-us. -

16 ** -

17 ** GNU Lesser General Public License Usage -

18 ** Alternatively, this file may be used under the terms of the GNU Lesser -

19 ** General Public License version 2.1 or version 3 as published by the Free -

20 ** Software Foundation and appearing in the file LICENSE.LGPLv21 and -

21 ** LICENSE.LGPLv3 included in the packaging of this file. Please review the -

22 ** following information to ensure the GNU Lesser General Public License -

23 ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and -

24 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -

25 ** -

26 ** As a special exception, The Qt Company gives you certain additional -

27 ** rights. These rights are described in The Qt Company LGPL Exception -

28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -

29 ** -

30 ** $QT_END_LICENSE$ -

31 ** -

32 ****************************************************************************/ -

33 -

34 #include "qaccessiblecache_p.h" -

35 -

36 #ifndef QT_NO_ACCESSIBILITY -

37 -

38 QT_BEGIN_NAMESPACE -

39 -

40 /*! -

41 \class QAccessibleCache -

42 \internal -

43 \brief Maintains a cache of accessible interfaces. -

44 */ -

45 -

Q_GLOBAL_STATIC(QAccessibleCache, qAccessibleCache)

never executed: end of block

never executed: guard.store(QtGlobalStatic::Destroyed);

never executed: return &holder.value;

guard.load() =...c::Initialized	Description
TRUE	never evaluated
FALSE	never evaluated

47 -

48 QAccessibleCache *QAccessibleCache::instance() -

49 { -

return qAccessibleCache;

never executed: return qAccessibleCache;

51 } -

52 -

53 /* -

54 The ID is always in the range [INT_MAX+1, UINT_MAX]. -

55 This makes it easy on windows to reserve the positive integer range -

56 for the index of a child and not clash with the unique ids. -

57 */ -

58 QAccessible::Id QAccessibleCache::acquireId() const -

59 { -

60 static const QAccessible::Id FirstId = QAccessible::Id(INT_MAX) + 1; -

61 static QAccessible::Id lastUsedId = FirstId; -

62 -

while (idToInterface.contains(lastUsedId)) {

idToInterface....ns(lastUsedId)	Description
TRUE	never evaluated
FALSE	never evaluated

64 // (wrap back when when we reach UINT_MAX - 1) -

65 // -1 because on Android -1 is taken for the "View" so just avoid it completely for consistency -

if (lastUsedId == UINT_MAX - 1)

lastUsedId == ...* 2U + 1U) - 1	Description
TRUE	never evaluated
FALSE	never evaluated

lastUsedId = FirstId;

never executed: lastUsedId = FirstId;

68 else -

++lastUsedId;

never executed: ++lastUsedId;

70 } -

71 -

return lastUsedId;

never executed: return lastUsedId;

73 } -

74 -

75 QAccessibleInterface *QAccessibleCache::interfaceForId(QAccessible::Id id) const -

76 { -

return idToInterface.value(id);

never executed: return idToInterface.value(id);

78 } -

79 -

80 QAccessible::Id QAccessibleCache::idForInterface(QAccessibleInterface *iface) const -

81 { -

return interfaceToId.value(iface);

never executed: return interfaceToId.value(iface);

83 } -

84 -

85 QAccessible::Id QAccessibleCache::insert(QObject *object, QAccessibleInterface *iface) const -

86 { -

87 Q_ASSERT(iface); -

88 Q_UNUSED(object) -

89 -

90 // object might be 0 -

91 Q_ASSERT(!objectToId.contains(object)); -

92 Q_ASSERT_X(!interfaceToId.contains(iface), "", "Accessible interface inserted into cache twice!"); -

93 -

94 QAccessible::Id id = acquireId(); -

95 QObject *obj = iface->object(); -

96 Q_ASSERT(object == obj); -

if (obj) {

obj	Description
TRUE	never evaluated
FALSE	never evaluated

98 objectToId.insert(obj, id); -

99 connect(obj, &QObject::destroyed, this, &QAccessibleCache::objectDestroyed); -

100

}

never executed: end of block

101 idToInterface.insert(id, iface); -

102 interfaceToId.insert(iface, id); -

103

return id;

never executed: return id;

104 } -

105 -

106 void QAccessibleCache::objectDestroyed(QObject* obj) -

107 { -

108 QAccessible::Id id = objectToId.value(obj); -

109

if (id) {

id	Description
TRUE	never evaluated
FALSE	never evaluated

110 Q_ASSERT_X(idToInterface.contains(id), "", "QObject with accessible interface deleted, where interface not in cache!"); -

111 deleteInterface(id, obj); -

112

}

never executed: end of block

113

}

never executed: end of block

114 -

115 void QAccessibleCache::deleteInterface(QAccessible::Id id, QObject *obj) -

116 { -

117 QAccessibleInterface *iface = idToInterface.take(id); -

118 interfaceToId.take(iface); -

119

if (!obj)

!obj	Description
TRUE	never evaluated
FALSE	never evaluated

120

obj = iface->object();

never executed: obj = iface->object();

121

if (obj)

obj	Description
TRUE	never evaluated
FALSE	never evaluated

122

objectToId.remove(obj);

never executed: objectToId.remove(obj);

123 delete iface; -

124 -

125 #ifdef Q_OS_MAC -

126 removeCocoaElement(id); -

127 #endif -

128

}

never executed: end of block

129 -

130 QT_END_NAMESPACE -

131 -

132 #endif -

Source code

Switch to Preprocessed file

Generated by Squish Coco Non-Commercial 4.3.0-BETA-master-30-08-2018-4cb69e9