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| 1 // Copyright 2017 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 "components/keyboard_lock/keyboard_lock_host.h" |
| 6 |
| 7 #include <utility> |
| 8 |
| 9 #include "base/logging.h" |
| 10 #include "base/memory/singleton.h" |
| 11 |
| 12 namespace keyboard_lock { |
| 13 |
| 14 namespace { |
| 15 |
| 16 class HostKeyEventInterceptorRetriever : public KeyEventInterceptor::Retriever { |
| 17 public: |
| 18 HostKeyEventInterceptorRetriever() = default; |
| 19 ~HostKeyEventInterceptorRetriever() override = default; |
| 20 |
| 21 KeyEventInterceptor* Get() override; |
| 22 }; |
| 23 |
| 24 KeyEventInterceptor* HostKeyEventInterceptorRetriever::Get() { |
| 25 return KeyboardLockHost::GetInstance()->interceptor(); |
| 26 } |
| 27 |
| 28 } // namespace |
| 29 |
| 30 KeyboardLockHost::KeyboardLockHost() = default; |
| 31 KeyboardLockHost::~KeyboardLockHost() = default; |
| 32 |
| 33 // static |
| 34 KeyboardLockHost* KeyboardLockHost::GetInstance() { |
| 35 return base::Singleton<KeyboardLockHost, |
| 36 base::LeakySingletonTraits<KeyboardLockHost>>::get(); |
| 37 } |
| 38 |
| 39 void KeyboardLockHost::SetKeyEventInterceptor( |
| 40 std::unique_ptr<KeyEventInterceptor> interceptor) { |
| 41 base::AutoLock lock(lock_); |
| 42 DCHECK(!interceptor_); |
| 43 DCHECK(interceptor); |
| 44 interceptor_ = std::move(interceptor); |
| 45 } |
| 46 |
| 47 KeyEventInterceptor* KeyboardLockHost::interceptor() { |
| 48 base::AutoLock lock(lock_); |
| 49 return interceptor_.get(); |
| 50 } |
| 51 |
| 52 std::unique_ptr<KeyEventInterceptor::Retriever> |
| 53 KeyboardLockHost::GetInterceptorRetriever() { |
| 54 return std::unique_ptr<KeyEventInterceptor::Retriever>( |
| 55 new HostKeyEventInterceptorRetriever()); |
| 56 } |
| 57 |
| 58 } // namespace keyboard_lock |
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