Upstream version 10.39.225.0

[platform/framework/web/crosswalk.git] / src / mojo / bindings / js / waiting_callback.h

diff --git a/src/mojo/bindings/js/waiting_callback.h b/src/mojo/bindings/js/waiting_callback.h
index bc17d19..1871d93 100644 (file)
--- a/src/mojo/bindings/js/waiting_callback.h
+++ b/src/mojo/bindings/js/waiting_callback.h
@@ -8,38 +8,52 @@
 #include "gin/handle.h"
 #include "gin/runner.h"
 #include "gin/wrappable.h"
-#include "mojo/public/c/system/async_waiter.h"
+#include "mojo/bindings/js/handle.h"
+#include "mojo/bindings/js/handle_close_observer.h"
+#include "mojo/public/c/environment/async_waiter.h"
+#include "mojo/public/cpp/system/core.h"
 
 namespace mojo {
 namespace js {
 
-class WaitingCallback : public gin::Wrappable<WaitingCallback> {
+class WaitingCallback : public gin::Wrappable<WaitingCallback>,
+                        public gin::HandleCloseObserver {
  public:
   static gin::WrapperInfo kWrapperInfo;
 
+  // Creates a new WaitingCallback.
   static gin::Handle<WaitingCallback> Create(
-      v8::Isolate* isolate, v8::Handle<v8::Function> callback);
+      v8::Isolate* isolate,
+      v8::Handle<v8::Function> callback,
+      gin::Handle<gin::HandleWrapper> handle_wrapper,
+      MojoHandleSignals signals);
 
-  MojoAsyncWaitID wait_id() const {
-    return wait_id_;
-  }
-
-  void set_wait_id(MojoAsyncWaitID wait_id) {
-    wait_id_ = wait_id;
-  }
-
-  // MojoAsyncWaitCallback
-  static void CallOnHandleReady(void* closure, MojoResult result);
+  // Cancels the callback. Does nothing if a callback is not pending. This is
+  // implicitly invoked from the destructor but can be explicitly invoked as
+  // necessary.
+  void Cancel();
 
  private:
-  WaitingCallback(v8::Isolate* isolate, v8::Handle<v8::Function> callback);
+  WaitingCallback(v8::Isolate* isolate,
+                  v8::Handle<v8::Function> callback,
+                  gin::Handle<gin::HandleWrapper> handle_wrapper);
   virtual ~WaitingCallback();
 
+  // Callback from MojoAsyncWaiter. |closure| is the WaitingCallback.
+  static void CallOnHandleReady(void* closure, MojoResult result);
+
+  // Invoked from CallOnHandleReady() (CallOnHandleReady() must be static).
   void OnHandleReady(MojoResult result);
 
+  // Invoked by the HandleWrapper if the handle is closed while this wait is
+  // still in progress.
+  virtual void OnWillCloseHandle() OVERRIDE;
+
   base::WeakPtr<gin::Runner> runner_;
   MojoAsyncWaitID wait_id_;
 
+  gin::HandleWrapper* handle_wrapper_;
+
   DISALLOW_COPY_AND_ASSIGN(WaitingCallback);
 };