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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtGui module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "qaccessible.h" |
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43 #include "qaccessiblebridge.h" |
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44 |
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45 #ifndef QT_NO_ACCESSIBILITY |
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46 |
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47 #include "qcoreapplication.h" |
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48 #include "qmutex.h" |
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49 #include "qvector.h" |
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50 #include "private/qfactoryloader_p.h" |
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51 |
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52 #include <stdlib.h> |
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53 |
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54 QT_BEGIN_NAMESPACE |
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55 |
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56 #ifndef QT_NO_LIBRARY |
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57 Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader, |
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58 (QAccessibleBridgeFactoryInterface_iid, QLatin1String("/accessiblebridge"))) |
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59 #endif |
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60 Q_GLOBAL_STATIC(QVector<QAccessibleBridge *>, bridges) |
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61 static bool isInit = false; |
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62 |
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63 void QAccessible::initialize() |
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64 { |
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65 if (isInit) |
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66 return; |
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67 isInit = true; |
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68 |
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69 if (qgetenv("QT_ACCESSIBILITY") != "1") |
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70 return; |
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71 #ifndef QT_NO_LIBRARY |
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72 const QStringList l = loader()->keys(); |
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73 for (int i = 0; i < l.count(); ++i) { |
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74 if (QAccessibleBridgeFactoryInterface *factory = |
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75 qobject_cast<QAccessibleBridgeFactoryInterface*>(loader()->instance(l.at(i)))) { |
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76 QAccessibleBridge * bridge = factory->create(l.at(i)); |
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77 if (bridge) |
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78 bridges()->append(bridge); |
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79 } |
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80 } |
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81 #endif |
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82 } |
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83 |
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84 void QAccessible::cleanup() |
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85 { |
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86 qDeleteAll(*bridges()); |
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87 } |
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88 |
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89 void QAccessible::updateAccessibility(QObject *o, int who, Event reason) |
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90 { |
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91 Q_ASSERT(o); |
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92 |
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93 if (updateHandler) { |
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94 updateHandler(o, who, reason); |
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95 return; |
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96 } |
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97 |
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98 initialize(); |
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99 if (bridges()->isEmpty()) |
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100 return; |
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101 |
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102 QAccessibleInterface *iface = QAccessible::queryAccessibleInterface(o); |
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103 if (!iface) |
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104 return; |
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105 |
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106 for (int i = 0; i < bridges()->count(); ++i) |
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107 bridges()->at(i)->notifyAccessibilityUpdate(reason, iface, who); |
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108 delete iface; |
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109 } |
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110 |
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111 void QAccessible::setRootObject(QObject *o) |
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112 { |
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113 if (rootObjectHandler) { |
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114 rootObjectHandler(o); |
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115 return; |
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116 } |
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117 |
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118 initialize(); |
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119 if (bridges()->isEmpty()) |
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120 return; |
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121 |
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122 if (!o) |
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123 return; |
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124 |
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125 for (int i = 0; i < bridges()->count(); ++i) { |
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126 QAccessibleInterface *iface = QAccessible::queryAccessibleInterface(o); |
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127 bridges()->at(i)->setRootObject(iface); |
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128 } |
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129 } |
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130 |
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131 QT_END_NAMESPACE |
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132 |
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133 #endif // QT_NO_ACCESSIBILITY |
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134 |