doc/src/snippets/code/doc_src_qt4-accessibility.qdoc
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the documentation of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
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    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 //! [environment]
       
    43 export QT_ACCESSIBILITY=1
       
    44 //! [environment]
       
    45 
       
    46 //! [0]
       
    47 class MyWidgetInterface : public QAccessibleWidget
       
    48 {
       
    49 public:
       
    50     MyWidgetInterface(QWidget *widget, Role role);
       
    51 
       
    52     QString text(Text text, int child) const;
       
    53     State state(int child) const;
       
    54     QString actionText(int action, Text text, int child) const;
       
    55     bool doAction(int action, int child, const QVariantList &params);
       
    56     ...
       
    57 };
       
    58 //! [0]
       
    59 
       
    60 
       
    61 //! [1]
       
    62 bool MyWidgetInterface::doAction(int action, int child,
       
    63                                  const QVariantList &params)
       
    64 {
       
    65     if (child || !widget()->isEnabled())
       
    66         return false;
       
    67 
       
    68     switch (action) {
       
    69     case DefaultAction:
       
    70     case Press:
       
    71         {
       
    72             MyWidget *widget = qobject_cast<MyWidget *>(object());
       
    73             if (widget)
       
    74                 widget->click();
       
    75         }
       
    76         return true;
       
    77     }
       
    78     return QAccessibleWidget::doAction(action, child, params);
       
    79 }
       
    80 //! [1]
       
    81 
       
    82 
       
    83 //! [2]
       
    84 QStringList MyFactory::keys() const
       
    85 {
       
    86     return QStringList() << "MyWidget" << "MyOtherWidget";
       
    87 }
       
    88 
       
    89 QAccessibleInterface *MyFactory::create(const QString &className,
       
    90                                         QObject *object)
       
    91 {
       
    92     if (classname == "MyWidget")
       
    93         return new MyWidgetInterface(object);
       
    94     if (classname == "MyOtherWidget")
       
    95         return new MyOtherWidgetInterface(object);
       
    96     return 0;
       
    97 }
       
    98 
       
    99 Q_EXPORT_PLUGIN2(myfactory, MyFactory)
       
   100 //! [2]