Transparently handle QFuture<T> method return types

When a client invokes a method returning a QFuture<T>, QWebChannel will
now automatically attach a continuation and send the contained result
after the QFuture<T> has finished.

[ChangeLog] Transparently handle QFuture<T> method return types

Task-number: QTBUG-92903
Change-Id: I4069d51e79447dee249bb8af52a16e4496484093
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Arno Rehn <a.rehn@menlosystems.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/webchannel/qwebchannel.cpp b/src/webchannel/qwebchannel.cpp
index 4752891..b268e95 100644
--- a/src/webchannel/qwebchannel.cpp
+++ b/src/webchannel/qwebchannel.cpp
@@ -66,6 +66,9 @@ QT_BEGIN_NAMESPACE
     On the client side, a JavaScript object will be created for any published C++ QObject. It mirrors the
     C++ object's API and thus is intuitively useable.
 
+    QWebChannel transparently supports QFuture. When a client calls a method that returns a QFuture,
+    QWebChannel will send a response with the QFuture result only after the QFuture has finished.
+
     The C++ QWebChannel API makes it possible to talk to any HTML client, which could run on a local
     or even remote machine. The only limitation is that the HTML client supports the JavaScript
     features used by \c{qwebchannel.js}. As such, one can interact