base::Bind: Remove scoped_callback_factory.h.

base/memory/scoped_callback_factory.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// ScopedCallbackFactory helps in cases where you wish to allocate a Callback
-// (see base/callback.h), but need to prevent any pending callbacks from
-// executing when your object gets destroyed.
-//
-// EXAMPLE:
-//
-//  void GatherDataAsynchronously(Callback1<Data>::Type* callback);
-//
-//  class MyClass {
-//   public:
-//    MyClass() : factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
-//    }
-//
-//    void Process() {
-//      GatherDataAsynchronously(factory_.NewCallback(&MyClass::GotData));
-//    }
-//
-//   private:
-//    void GotData(const Data& data) {
-//      ...
-//    }
-//
-//    base::ScopedCallbackFactory<MyClass> factory_;
-//  };
-//
-// In the above example, the Process function calls GatherDataAsynchronously to
-// kick off some asynchronous processing that upon completion will notify a
-// callback.  If in the meantime, the MyClass instance is destroyed, when the
-// callback runs, it will notice that the MyClass instance is dead, and it will
-// avoid calling the GotData method.
-
-#ifndef BASE_MEMORY_SCOPED_CALLBACK_FACTORY_H_
-#define BASE_MEMORY_SCOPED_CALLBACK_FACTORY_H_
-
-#include "base/callback_old.h"
-#include "base/memory/weak_ptr.h"
-
-namespace base {
-
-template <class T>
-class ScopedCallbackFactory {
- public:
-  explicit ScopedCallbackFactory(T* obj) : weak_factory_(obj) {
-  }
-
-  typename Callback0::Type* NewCallback(
-      void (T::*method)()) {
-    return new CallbackImpl<void (T::*)(), Tuple0 >(
-        weak_factory_.GetWeakPtr(), method);
-  }
-
-  template <typename Arg1>
-  typename Callback1<Arg1>::Type* NewCallback(
-      void (T::*method)(Arg1)) {
-    return new CallbackImpl<void (T::*)(Arg1), Tuple1<Arg1> >(
-        weak_factory_.GetWeakPtr(), method);
-  }
-
-  template <typename Arg1, typename Arg2>
-  typename Callback2<Arg1, Arg2>::Type* NewCallback(
-      void (T::*method)(Arg1, Arg2)) {
-    return new CallbackImpl<void (T::*)(Arg1, Arg2), Tuple2<Arg1, Arg2> >(
-        weak_factory_.GetWeakPtr(), method);
-  }
-
-  template <typename Arg1, typename Arg2, typename Arg3>
-  typename Callback3<Arg1, Arg2, Arg3>::Type* NewCallback(
-      void (T::*method)(Arg1, Arg2, Arg3)) {
-    return new CallbackImpl<void (T::*)(Arg1, Arg2, Arg3),
-                            Tuple3<Arg1, Arg2, Arg3> >(
-        weak_factory_.GetWeakPtr(), method);
-  }
-
-  template <typename Arg1, typename Arg2, typename Arg3, typename Arg4>
-  typename Callback4<Arg1, Arg2, Arg3, Arg4>::Type* NewCallback(
-      void (T::*method)(Arg1, Arg2, Arg3, Arg4)) {
-    return new CallbackImpl<void (T::*)(Arg1, Arg2, Arg3, Arg4),
-                            Tuple4<Arg1, Arg2, Arg3, Arg4> >(
-        weak_factory_.GetWeakPtr(), method);
-  }
-
-  template <typename Arg1, typename Arg2, typename Arg3, typename Arg4,
-            typename Arg5>
-  typename Callback5<Arg1, Arg2, Arg3, Arg4, Arg5>::Type* NewCallback(
-      void (T::*method)(Arg1, Arg2, Arg3, Arg4, Arg5)) {
-    return new CallbackImpl<void (T::*)(Arg1, Arg2, Arg3, Arg4, Arg5),
-                            Tuple5<Arg1, Arg2, Arg3, Arg4, Arg5> >(
-        weak_factory_.GetWeakPtr(), method);
-  }
-
-  void RevokeAll() { weak_factory_.InvalidateWeakPtrs(); }
-  bool HasPendingCallbacks() const { return weak_factory_.HasWeakPtrs(); }
-
- private:
-  template <typename Method>
-  class CallbackStorage {
-   public:
-    CallbackStorage(const WeakPtr<T>& obj, Method meth)
-        : obj_(obj),
-          meth_(meth) {
-    }
-
-   protected:
-    WeakPtr<T> obj_;
-    Method meth_;
-  };
-
-  template <typename Method, typename Params>
-  class CallbackImpl : public CallbackStorage<Method>,
-                       public CallbackRunner<Params> {
-   public:
-    CallbackImpl(const WeakPtr<T>& obj, Method meth)
-        : CallbackStorage<Method>(obj, meth) {
-    }
-    virtual void RunWithParams(const Params& params) {
-      // Use "this->" to force C++ to look inside our templatized base class;
-      // see Effective C++, 3rd Ed, item 43, p210 for details.
-      if (!this->obj_)
-        return;
-      DispatchToMethod(this->obj_.get(), this->meth_, params);
-    }
-  };
-
-  WeakPtrFactory<T> weak_factory_;
-};
-
-}  // namespace base
-
-#endif  // BASE_MEMORY_SCOPED_CALLBACK_FACTORY_H_