1 files changed, 50 insertions, 0 deletions
diff --git a/dom/base/TimeoutHandler.h b/dom/base/TimeoutHandler.h
new file mode 100644
index 000000000..cb0a0ce94
--- /dev/null
+++ b/dom/base/TimeoutHandler.h
@@ -0,0 +1,50 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_timeout_handler_h
+#define mozilla_dom_timeout_handler_h
+
+#include "nsCOMPtr.h"
+#include "nsISupports.h"
+#include "nsITimeoutHandler.h"
+
+namespace mozilla {
+namespace dom {
+
+/**
+ * Utility class for implementing nsITimeoutHandlers, designed to be subclassed.
+ */
+class TimeoutHandler : public nsITimeoutHandler
+{
+public:
+  // TimeoutHandler doesn't actually contain cycles, but subclasses
+  // probably will.
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_CLASS(TimeoutHandler)
+
+  virtual nsresult Call() override;
+  virtual void GetLocation(const char** aFileName, uint32_t* aLineNo,
+                           uint32_t* aColumn) override;
+  virtual void MarkForCC() override {}
+protected:
+  TimeoutHandler() : mFileName(""), mLineNo(0), mColumn(0) {}
+  explicit TimeoutHandler(JSContext *aCx);
+
+  virtual ~TimeoutHandler() {}
+private:
+  TimeoutHandler(const TimeoutHandler&) = delete;
+  TimeoutHandler& operator=(const TimeoutHandler&) = delete;
+  TimeoutHandler& operator=(const TimeoutHandler&&) = delete;
+
+  nsCString mFileName;
+  uint32_t mLineNo;
+  uint32_t mColumn;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_timeout_handler_h