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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "base/callback_list.h"
      6 
      7 #include "base/basictypes.h"
      8 #include "base/bind.h"
      9 #include "base/bind_helpers.h"
     10 #include "base/memory/scoped_ptr.h"
     11 
     12 namespace base {
     13 
     14 class Foo {
     15  public:
     16   Foo() {}
     17   ~Foo() {}
     18 };
     19 
     20 class FooListener {
     21  public:
     22   FooListener() {}
     23 
     24   void GotAScopedFoo(scoped_ptr<Foo> f) { foo_ = f.Pass(); }
     25 
     26   scoped_ptr<Foo> foo_;
     27 
     28  private:
     29   DISALLOW_COPY_AND_ASSIGN(FooListener);
     30 };
     31 
     32 
     33 #if defined(NCTEST_MOVE_ONLY_TYPE_PARAMETER)  // [r"calling a private constructor of class"]
     34 
     35 // Callbacks run with a move-only typed parameter.
     36 //
     37 // CallbackList does not support move-only typed parameters. Notify() is
     38 // designed to take zero or more parameters, and run each registered callback
     39 // with them. With move-only types, the parameter will be set to NULL after the
     40 // first callback has been run.
     41 void WontCompile() {
     42   FooListener f;
     43   CallbackList<void(scoped_ptr<Foo>)> c1;
     44   scoped_ptr<CallbackList<void(scoped_ptr<Foo>)>::Subscription> sub =
     45       c1.Add(Bind(&FooListener::GotAScopedFoo, Unretained(&f)));
     46   c1.Notify(scoped_ptr<Foo>(new Foo()));
     47 }
     48 
     49 #endif
     50 
     51 }  // namespace base
     52