| // Copyright 2016 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. |
| |
| #ifndef MojoHelper_h |
| #define MojoHelper_h |
| |
| #include "base/bind.h" |
| #include "mojo/public/cpp/bindings/callback.h" |
| #include "mojo/public/cpp/bindings/wtf_array.h" |
| #include "platform/heap/HeapAllocator.h" |
| #include <utility> |
| |
| namespace blink { |
| |
| // Binds an instance of a class to its member function. Does not bind anything |
| // else. Provides limited access to base::Bind() function. base::Bind() could |
| // be dangerous if it's used across threads, so we don't want to allow general |
| // use of base::Bind(). See also "platform/ThreadSafeFunctional.h". |
| template <typename Class, typename ReturnType, typename... Args> |
| mojo::Callback<ReturnType(Args...)> |
| sameThreadBindForMojo(ReturnType (Class::*method)(Args...), Class* instance) |
| { |
| return base::Bind(method, base::Unretained(instance)); |
| } |
| |
| } // namespace blink |
| |
| namespace mojo { |
| |
| // A |TypeConverter| that will create a |WTFArray<T>| containing a copy of the |
| // contents of a |blink::HeapVector<E>|, using |TypeConverter<T, E>| to copy |
| // each element. The returned array will always be non-null. |
| template <typename T, typename E> |
| struct TypeConverter<WTFArray<T>, blink::HeapVector<E>> { |
| static WTFArray<T> Convert(const blink::HeapVector<E>& input) |
| { |
| WTFArray<T> result(input.size()); |
| for (size_t i = 0; i < input.size(); ++i) |
| result[i] = TypeConverter<T, E>::Convert(input[i]); |
| return std::move(result); |
| } |
| }; |
| |
| } // namespace mojo |
| |
| #endif // MojoHelper_h |