1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QQUICKACCESSIBLEATTACHED_H
#define QQUICKACCESSIBLEATTACHED_H
#include <QtQuick/qquickitem.h>
#include <QtCore/qobject.h>
#include <QtCore/qstring.h>
#ifndef QT_NO_ACCESSIBILITY
#include <QtGui/qaccessible.h>
#include <private/qtquickglobal_p.h>
QT_BEGIN_NAMESPACE
#define STATE_PROPERTY(P) \
Q_PROPERTY(bool P READ P WRITE set_ ## P NOTIFY P ## Changed FINAL) \
bool P() const { return m_state.P ; } \
void set_ ## P(bool arg) \
{ \
if (m_state.P == arg) \
return; \
m_state.P = arg; \
emit P ## Changed(arg); \
QAccessible::State changedState; \
changedState.P = true; \
QAccessibleStateChangeEvent ev(parent(), changedState); \
QAccessible::updateAccessibility(&ev); \
} \
Q_SIGNAL void P ## Changed(bool arg);
class Q_QUICK_PRIVATE_EXPORT QQuickAccessibleAttached : public QObject
{
Q_OBJECT
Q_PROPERTY(QAccessible::Role role READ role WRITE setRole NOTIFY roleChanged FINAL)
Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged FINAL)
Q_PROPERTY(QString description READ description WRITE setDescription NOTIFY descriptionChanged FINAL)
public:
Q_ENUMS(QAccessible::Role QAccessible::Event)
STATE_PROPERTY(checkable)
STATE_PROPERTY(checked)
STATE_PROPERTY(editable)
STATE_PROPERTY(focusable)
STATE_PROPERTY(focused)
STATE_PROPERTY(multiLine)
STATE_PROPERTY(readOnly)
STATE_PROPERTY(selected)
STATE_PROPERTY(selectable)
STATE_PROPERTY(pressed)
STATE_PROPERTY(checkStateMixed)
STATE_PROPERTY(defaultButton)
STATE_PROPERTY(passwordEdit)
STATE_PROPERTY(selectableText)
QQuickAccessibleAttached(QObject *parent);
~QQuickAccessibleAttached();
QAccessible::Role role() const { return m_role; }
void setRole(QAccessible::Role role)
{
if (role != m_role) {
m_role = role;
Q_EMIT roleChanged();
// There is no way to signify role changes at the moment.
// QAccessible::updateAccessibility(parent(), 0, QAccessible::);
switch (role) {
case QAccessible::CheckBox:
case QAccessible::RadioButton:
m_state.focusable = true;
m_state.checkable = true;
break;
case QAccessible::Button:
case QAccessible::MenuItem:
case QAccessible::PageTab:
case QAccessible::EditableText:
case QAccessible::SpinBox:
case QAccessible::ComboBox:
case QAccessible::Terminal:
case QAccessible::ScrollBar:
m_state.focusable = true;
break;
default:
break;
}
}
}
QString name() const {
if (m_state.passwordEdit)
return QString();
return m_name;
}
void setName(const QString &name) {
if (name != m_name) {
m_name = name;
Q_EMIT nameChanged();
QAccessibleEvent ev(parent(), QAccessible::NameChanged);
QAccessible::updateAccessibility(&ev);
}
}
QString description() const { return m_description; }
void setDescription(const QString &description)
{
if (m_description != description) {
m_description = description;
Q_EMIT descriptionChanged();
QAccessibleEvent ev(parent(), QAccessible::DescriptionChanged);
QAccessible::updateAccessibility(&ev);
}
}
// Factory function
static QQuickAccessibleAttached *qmlAttachedProperties(QObject *obj);
static QQuickAccessibleAttached *attachedProperties(const QObject *obj)
{
return qobject_cast<QQuickAccessibleAttached*>(qmlAttachedPropertiesObject<QQuickAccessibleAttached>(obj, false));
}
// Property getter
static QVariant property(const QObject *object, const char *propertyName)
{
if (QObject *attachedObject = QQuickAccessibleAttached::attachedProperties(object))
return attachedObject->property(propertyName);
return QVariant();
}
static bool setProperty(QObject *object, const char *propertyName, const QVariant &value)
{
QObject *obj = qmlAttachedPropertiesObject<QQuickAccessibleAttached>(object, true);
if (!obj) {
qWarning("cannot set property Accessible.%s of QObject %s", propertyName, object->metaObject()->className());
return false;
}
return obj->setProperty(propertyName, value);
}
static QObject *findAccessible(QObject *object, QAccessible::Role role = QAccessible::NoRole)
{
while (object) {
QQuickAccessibleAttached *att = QQuickAccessibleAttached::attachedProperties(object);
if (att && (role == QAccessible::NoRole || att->role() == role)) {
break;
}
object = object->parent();
}
return object;
}
QAccessible::State state() { return m_state; }
public Q_SLOTS:
void valueChanged() {
QAccessibleValueChangeEvent ev(parent(), parent()->property("value"));
QAccessible::updateAccessibility(&ev);
}
void cursorPositionChanged() {
QAccessibleTextCursorEvent ev(parent(), parent()->property("cursorPosition").toInt());
QAccessible::updateAccessibility(&ev);
}
Q_SIGNALS:
void roleChanged();
void nameChanged();
void descriptionChanged();
private:
QQuickItem *item() const { return static_cast<QQuickItem*>(parent()); }
QAccessible::Role m_role;
QAccessible::State m_state;
QString m_name;
QString m_description;
public:
using QObject::property;
};
QT_END_NAMESPACE
QML_DECLARE_TYPE(QQuickAccessibleAttached)
QML_DECLARE_TYPEINFO(QQuickAccessibleAttached, QML_HAS_ATTACHED_PROPERTIES)
#endif // QT_NO_ACCESSIBILITY
#endif
|
