QObjectComputedProperty docs: move example to snippet

This patch amends 89a4c8d40d2ee1b8794dd7fcf80d226c5c87ba6c.
It moves the code sample into a separate snippet file, which allows us
to use Q_OBJECT macro in it without complaints from moc.

Task-number: QTBUG-97656
Pick-to: 6.2
Change-Id: I368d8dd8c00dbbebd8a6bf3788be796c8ca4bce8
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

1 files changed, 37 insertions, 0 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 3d63abe590..ae1d2202e7 100644
--- a/src/corelib/doc/snippets/code/src_corelib_kernel_qproperty.cpp
+++ b/src/corelib/doc/snippets/code/src_corelib_kernel_qproperty.cpp
@@ -160,3 +160,40 @@ int main()
 
 #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.markDirty();
+    }
+private:
+    Q_DECLARE_PRIVATE(MyClass)
+};
+//! [5]