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58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
// Copyright 2018 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_FUCHSIA_SCOPED_SERVICE_BINDING_H_
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#define BASE_FUCHSIA_SCOPED_SERVICE_BINDING_H_
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#include <lib/fidl/cpp/binding_set.h>
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#include "base/bind.h"
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#include "base/fuchsia/service_directory.h"
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namespace base {
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namespace fuchsia {
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template <typename Interface>
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class ScopedServiceBinding {
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public:
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// |service_directory| and |impl| must outlive the binding.
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ScopedServiceBinding(ServiceDirectory* service_directory, Interface* impl)
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: directory_(service_directory), impl_(impl) {
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directory_->AddService(
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Interface::Name_,
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BindRepeating(&ScopedServiceBinding::BindClient, Unretained(this)));
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}
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~ScopedServiceBinding() { directory_->RemoveService(Interface::Name_); }
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void SetOnLastClientCallback(base::OnceClosure on_last_client_callback) {
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on_last_client_callback_ = std::move(on_last_client_callback);
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bindings_.set_empty_set_handler(
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fit::bind_member(this, &ScopedServiceBinding::OnBindingSetEmpty));
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}
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private:
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void BindClient(zx::channel channel) {
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bindings_.AddBinding(impl_,
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fidl::InterfaceRequest<Interface>(std::move(channel)));
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}
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void OnBindingSetEmpty() {
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bindings_.set_empty_set_handler(nullptr);
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std::move(on_last_client_callback_).Run();
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}
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ServiceDirectory* const directory_;
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Interface* const impl_;
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fidl::BindingSet<Interface> bindings_;
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base::OnceClosure on_last_client_callback_;
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DISALLOW_COPY_AND_ASSIGN(ScopedServiceBinding);
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};
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} // namespace fuchsia
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} // namespace base
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#endif // BASE_FUCHSIA_SCOPED_SERVICE_BINDING_H_
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