Initial commit.

ext/libstrawberry-common/core/closure.cpp

@@ -0,0 +1,71 @@
+/* This file is part of Strawberry.
+   Copyright 2011, David Sansome <me@davidsansome.com>
+
+   Strawberry is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Strawberry is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "closure.h"
+
+#include "core/timeconstants.h"
+
+namespace _detail {
+
+ClosureBase::ClosureBase(ObjectHelper *helper)
+    : helper_(helper) {
+}
+
+ClosureBase::~ClosureBase() {
+}
+
+CallbackClosure::CallbackClosure(QObject *sender, const char *signal, std::function<void()> callback)
+    : ClosureBase(new ObjectHelper(sender, signal, this)),
+    callback_(callback) {
+}
+
+void CallbackClosure::Invoke() {
+  callback_();
+}
+
+ObjectHelper* ClosureBase::helper() const {
+  return helper_;
+}
+
+ObjectHelper::ObjectHelper(QObject *sender, const char *signal, ClosureBase *closure) : closure_(closure) {
+
+  connect(sender, signal, SLOT(Invoked()));
+  connect(sender, SIGNAL(destroyed()), SLOT(deleteLater()));
+
+}
+
+void ObjectHelper::Invoked() {
+  closure_->Invoke();
+  deleteLater();
+}
+
+void Unpack(QList<QGenericArgument>*) {}
+
+}  // namespace _detail
+
+_detail::ClosureBase* NewClosure(QObject *sender, const char *signal, std::function<void()> callback) {
+  return new _detail::CallbackClosure(sender, signal, callback);
+}
+
+void DoAfter(QObject *receiver, const char *slot, int msec) {
+  QTimer::singleShot(msec, receiver, slot);
+}
+
+void DoInAMinuteOrSo(QObject *receiver, const char *slot) {
+  int msec = (60 + (qrand() % 60)) * kMsecPerSec;
+  DoAfter(receiver, slot, msec);
+}