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1 // Copyright 2014 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 #ifndef MOJO_COMMON_WEAK_BINDING_SET_H_ | |
6 #define MOJO_COMMON_WEAK_BINDING_SET_H_ | |
7 | |
8 #include <algorithm> | |
9 #include <vector> | |
10 | |
11 #include "base/memory/weak_ptr.h" | |
12 #include "mojo/public/cpp/bindings/binding.h" | |
13 | |
14 namespace mojo { | |
15 | |
16 // Use this class to manage a set of bindings each of which is | |
17 // owned by the pipe it is bound to. | |
18 template <typename Interface> | |
19 class WeakBindingSet { | |
20 public: | |
21 WeakBindingSet() {} | |
22 ~WeakBindingSet() { CloseAllBindings(); } | |
23 | |
24 void AddBinding(Interface* impl, InterfaceRequest<Interface> request) { | |
25 bindings_.emplace_back(new Binding<Interface>(impl, request.Pass())); | |
26 auto* binding = bindings_.back().get(); | |
27 // Set the connection error handler for the newly added Binding to be a | |
28 // function that will erase it from the vector. | |
29 binding->set_connection_error_handler([this, binding]() { | |
30 auto it = | |
31 std::find_if(bindings_.begin(), bindings_.end(), | |
32 [binding](const std::unique_ptr<Binding<Interface>>& b) { | |
33 return (b.get() == binding); | |
34 }); | |
35 DCHECK(it != bindings_.end()); | |
36 bindings_.erase(it); | |
37 }); | |
38 } | |
39 | |
40 void CloseAllBindings() { | |
41 bindings_.clear(); | |
42 } | |
43 | |
44 size_t size() const { return bindings_.size(); } | |
45 | |
46 private: | |
47 std::vector<std::unique_ptr<Binding<Interface>>> bindings_; | |
48 | |
49 DISALLOW_COPY_AND_ASSIGN(WeakBindingSet); | |
50 }; | |
51 | |
52 } // namespace mojo | |
53 | |
54 #endif // MOJO_COMMON_WEAK_BINDING_SET_H_ | |
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