Async::wait

Useful in i.e. loops that have to wait a bit before every execution.

2 files changed, 18 insertions, 0 deletions

diff --git a/async/src/async.cpp b/async/src/async.cpp
index e92d333..0e86a84 100644
--- a/async/src/async.cpp
+++ b/async/src/async.cpp
@@ -20,6 +20,7 @@
 #include <QCoreApplication>
 #include <QDebug>
 #include <QEventLoop>
+#include <QTimer>
 
 using namespace Async;
 
@@ -133,3 +134,15 @@ Job<void> Async::dowhile(ThenTask<bool> body)
     });
 }
 
+Job<void> Async::wait(int delay)
+{
+    auto timer = QSharedPointer<QTimer>::create();
+    return Async::start<void>([timer, delay](Async::Future<void> &future) {
+        timer->setSingleShot(true);
+        QObject::connect(timer.data(), &QTimer::timeout, [&future]() {
+            future.setFinished();
+        });
+        timer->start(delay);
+    });
+}
+
diff --git a/async/src/async.h b/async/src/async.h
index 18b5979..b1f1121 100644
--- a/async/src/async.h
+++ b/async/src/async.h
@@ -285,6 +285,11 @@ template<typename Out>
 Job<Out> iterate(const Out &container);
 
 /**
+ * Async delay.
+ */
+Job<void> wait(int delay);
+
+/**
  * A null job.
  *
  * An async noop.