1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#include "qaccessibleobject.h"
5
6#if QT_CONFIG(accessibility)
7
8#include <QtGui/QGuiApplication>
9#include <QtGui/QWindow>
10
11#include "qpointer.h"
12#include "qmetaobject.h"
13
14QT_BEGIN_NAMESPACE
15
16class QAccessibleObjectPrivate
17{
18public:
19 QPointer<QObject> object;
20};
21
22/*!
23 \class QAccessibleObject
24 \brief The QAccessibleObject class implements parts of the
25 QAccessibleInterface for QObjects.
26
27 \ingroup accessibility
28 \inmodule QtGui
29
30 This class is part of \l {Accessibility for QWidget Applications}.
31
32 This class is mainly provided for convenience. All subclasses of
33 the QAccessibleInterface that provide implementations of non-widget objects
34 should use this class as their base class.
35
36 \sa QAccessible, QAccessibleWidget
37*/
38
39/*!
40 Creates a QAccessibleObject for \a object.
41*/
42QAccessibleObject::QAccessibleObject(QObject *object)
43{
44 d = new QAccessibleObjectPrivate;
45 d->object = object;
46}
47
48/*!
49 Destroys the QAccessibleObject.
50
51 This only happens when a call to release() decrements the internal
52 reference counter to zero.
53*/
54QAccessibleObject::~QAccessibleObject()
55{
56 delete d;
57}
58
59/*!
60 \reimp
61*/
62QObject *QAccessibleObject::object() const
63{
64 return d->object;
65}
66
67/*!
68 \reimp
69*/
70bool QAccessibleObject::isValid() const
71{
72 return !d->object.isNull();
73}
74
75/*! \reimp */
76QRect QAccessibleObject::rect() const
77{
78 return QRect();
79}
80
81/*! \reimp */
82void QAccessibleObject::setText(QAccessible::Text, const QString &)
83{
84}
85
86/*! \reimp */
87QAccessibleInterface *QAccessibleObject::childAt(int x, int y) const
88{
89 for (int i = 0; i < childCount(); ++i) {
90 QAccessibleInterface *childIface = child(index: i);
91 Q_ASSERT(childIface);
92 if (childIface->isValid() && childIface->rect().contains(ax: x,ay: y))
93 return childIface;
94 }
95 return nullptr;
96}
97
98/*!
99 \class QAccessibleApplication
100 \brief The QAccessibleApplication class implements the QAccessibleInterface for QApplication.
101
102 \internal
103
104 \ingroup accessibility
105*/
106
107/*!
108 Creates a QAccessibleApplication for the QApplication object referenced by qApp.
109*/
110QAccessibleApplication::QAccessibleApplication()
111: QAccessibleObject(qApp)
112{
113}
114
115QWindow *QAccessibleApplication::window() const
116{
117 // an application can have several windows, and AFAIK we don't need
118 // to notify about changes on the application.
119 return nullptr;
120}
121
122// all toplevel windows except popups and the desktop
123static QObjectList topLevelObjects()
124{
125 QObjectList list;
126 const QWindowList tlw(QGuiApplication::topLevelWindows());
127 for (int i = 0; i < tlw.size(); ++i) {
128 QWindow *w = tlw.at(i);
129 if (w->type() != Qt::Popup && w->type() != Qt::Desktop) {
130 if (QAccessibleInterface *root = w->accessibleRoot()) {
131 if (root->object())
132 list.append(t: root->object());
133 }
134 }
135 }
136
137 return list;
138}
139
140/*! \reimp */
141int QAccessibleApplication::childCount() const
142{
143 return topLevelObjects().size();
144}
145
146/*! \reimp */
147int QAccessibleApplication::indexOfChild(const QAccessibleInterface *child) const
148{
149 if (!child)
150 return -1;
151 const QObjectList tlw(topLevelObjects());
152 return tlw.indexOf(t: child->object());
153}
154
155QAccessibleInterface *QAccessibleApplication::parent() const
156{
157 return nullptr;
158}
159
160QAccessibleInterface *QAccessibleApplication::child(int index) const
161{
162 const QObjectList tlo(topLevelObjects());
163 if (index >= 0 && index < tlo.size())
164 return QAccessible::queryAccessibleInterface(tlo.at(i: index));
165 return nullptr;
166}
167
168
169/*! \reimp */
170QAccessibleInterface *QAccessibleApplication::focusChild() const
171{
172 if (QWindow *window = QGuiApplication::focusWindow())
173 return window->accessibleRoot();
174 return nullptr;
175}
176
177/*! \reimp */
178QString QAccessibleApplication::text(QAccessible::Text t) const
179{
180 switch (t) {
181 case QAccessible::Name:
182 return QGuiApplication::applicationName();
183 case QAccessible::Description:
184 return QGuiApplication::applicationFilePath();
185 case QAccessible::Identifier:
186 return QGuiApplication::desktopFileName();
187 default:
188 break;
189 }
190 return QString();
191}
192
193/*! \reimp */
194QAccessible::Role QAccessibleApplication::role() const
195{
196 return QAccessible::Application;
197}
198
199/*! \reimp */
200QAccessible::State QAccessibleApplication::state() const
201{
202 return QAccessible::State();
203}
204
205
206QT_END_NAMESPACE
207
208#endif // QT_CONFIG(accessibility)
209

source code of qtbase/src/gui/accessible/qaccessibleobject.cpp