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42 #include "qquickaccessibleattached_p.h"
44 #ifndef QT_NO_ACCESSIBILITY
46 #include "private/qquickitem_p.h"
51 \qmlclass Accessible QQuickAccessibleAttached
52 \inqmlmodule QtQuick 2
53 \ingroup qml-basic-interaction-elements
54 \brief Attached property to enable accessibility of QML items.
56 Items the user interacts with or that give information to the user
57 need to expose their information in a semantic way.
58 Then assistive tools can make use of that information to enable
59 users to interact with the application in various ways.
61 This enables Qt Quick applications to be used with screen-readers for example.
63 The most important properties to set are \l name and \l role.
69 \qmlproperty string QtQuick2::Accessible::name
71 This property sets an accessible name.
72 For a button for example, this should have a binding to its text.
73 In general this property should be set to a simple and concise
74 but human readable name. Do not include the type of control
75 you want to represent but just the name.
79 \qmlproperty string QtQuick2::Accessible::description
81 This property sets an accessible description.
82 Similar to the name it describes the item. The description
83 can be a little more verbose and tell what the item does,
84 for example the functionallity of the button it describes.
88 \qmlproperty enumeration QtQuick2::Accessible::role
90 This flags sets the semantic type of the widget.
91 A button for example would have "Button" as type.
92 The value must be one of \l QAccessible::Role .
101 Accessible.name: label.text
102 Accessible.role: Accessible.Button
106 Some roles have special semantics.
107 In order to implement check boxes for example a "checked" property is expected.
112 \o \bold {Expected property}
118 \o The check state of the check box.
122 \o The selected state of the radio button.
126 \o Whether the button is checkable.
130 \o Whether the button is checked (only if checkable is true).
136 QQuickAccessibleAttached::QQuickAccessibleAttached(QObject *parent)
140 QQuickItem *item = qobject_cast<QQuickItem*>(parent);
144 // Enable accessibility for items with accessible content. This also
145 // enables accessibility for the ancestors of souch items.
146 item->d_func()->setAccessibleFlagAndListener();
147 QAccessible::updateAccessibility(item, 0, QAccessible::ObjectCreated);
150 QQuickAccessibleAttached::~QQuickAccessibleAttached()
154 QQuickAccessibleAttached *QQuickAccessibleAttached::qmlAttachedProperties(QObject *obj)
156 return new QQuickAccessibleAttached(obj);