1 files changed, 80 insertions, 49 deletions
diff --git a/src/corelib/doc/snippets/code/src_corelib_kernel_qproperty.cpp b/src/corelib/doc/snippets/code/src_corelib_kernel_qproperty.cpp
index a402a70599..c2b55c9684 100644
--- a/src/corelib/doc/snippets/code/src_corelib_kernel_qproperty.cpp
+++ b/src/corelib/doc/snippets/code/src_corelib_kernel_qproperty.cpp
@@ -1,52 +1,5 @@
-/****************************************************************************
-**
-** Copyright (C) 2020 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the documentation of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** 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 The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-**   * Redistributions of source code must retain the above copyright
-**     notice, this list of conditions and the following disclaimer.
-**   * Redistributions in binary form must reproduce the above copyright
-**     notice, this list of conditions and the following disclaimer in
-**     the documentation and/or other materials provided with the
-**     distribution.
-**   * Neither the name of The Qt Company Ltd nor the names of its
-**     contributors may be used to endorse or promote products derived
-**     from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
+// Copyright (C) 2020 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
 #include <QObject>
 #include <QDebug>
@@ -119,3 +72,81 @@ void usage_QBindable() {
     qDebug() << bindableX.hasBinding() << myObject->x(); // prints true 84
     //! [3]
 }
+
+//! [4]
+#include <QObject>
+#include <QProperty>
+#include <QDebug>
+
+class Foo : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(int myVal READ myVal WRITE setMyVal BINDABLE bindableMyVal)
+public:
+    int myVal() { return myValMember.value(); }
+    void setMyVal(int newvalue) { myValMember = newvalue; }
+    QBindable<int> bindableMyVal() { return &myValMember; }
+signals:
+    void myValChanged();
+
+private:
+    Q_OBJECT_BINDABLE_PROPERTY(Foo, int, myValMember, &Foo::myValChanged);
+};
+
+int main()
+{
+    bool debugout(true); // enable debug log
+    Foo myfoo;
+    QProperty<int> prop(42);
+    QObject::connect(&myfoo, &Foo::myValChanged, [&]() {
+        if (debugout)
+            qDebug() << myfoo.myVal();
+    });
+    myfoo.bindableMyVal().setBinding([&]() { return prop.value(); }); // prints "42"
+
+    prop = 5; // prints "5"
+    debugout = false;
+    prop = 6; // prints nothing
+    debugout = true;
+    prop = 7; // prints "7"
+}
+
+#include "main.moc"
+//! [4]
+
+//! [5]
+class Client{};
+
+class MyClassPrivate : public QObjectPrivate
+{
+public:
+    QList<Client> clients;
+    bool hasClientsActualCalculation() const { return clients.size() > 0; }
+    Q_OBJECT_COMPUTED_PROPERTY(MyClassPrivate, bool, hasClientsData,
+                               &MyClassPrivate::hasClientsActualCalculation)
+};
+
+class MyClass : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(bool hasClients READ hasClients STORED false BINDABLE bindableHasClients)
+public:
+    QBindable<bool> bindableHasClients()
+    {
+        return QBindable<bool>(&d_func()->hasClientsData);
+    }
+    bool hasClients() const
+    {
+        return d_func()->hasClientsData.value();
+    }
+    void addClient(const Client &c)
+    {
+        Q_D(MyClass);
+        d->clients.push_back(c);
+        // notify that the value could have changed
+        d->hasClientsData.notify();
+    }
+private:
+    Q_DECLARE_PRIVATE(MyClass)
+};
+//! [5]