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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 "headless/lib/browser/headless_tab_socket_impl.h" |
| 6 |
| 7 namespace headless { |
| 8 |
| 9 HeadlessTabSocketImpl::HeadlessTabSocketImpl() : listener_(nullptr) {} |
| 10 |
| 11 HeadlessTabSocketImpl::~HeadlessTabSocketImpl() {} |
| 12 |
| 13 void HeadlessTabSocketImpl::SendMessageToTab(const std::string& message) { |
| 14 AwaitNextMessageFromEmbedderCallback callback; |
| 15 |
| 16 { |
| 17 base::AutoLock lock(lock_); |
| 18 if (waiting_for_message_cb_.is_null() || !outgoing_message_queue_.empty()) { |
| 19 outgoing_message_queue_.push_back(message); |
| 20 return; |
| 21 } else { |
| 22 callback = waiting_for_message_cb_; |
| 23 waiting_for_message_cb_ = AwaitNextMessageFromEmbedderCallback(); |
| 24 DCHECK(waiting_for_message_cb_.is_null()); |
| 25 } |
| 26 } |
| 27 |
| 28 callback.Run(message); |
| 29 } |
| 30 |
| 31 void HeadlessTabSocketImpl::SetListener(Listener* listener) { |
| 32 std::list<std::string> messages; |
| 33 |
| 34 { |
| 35 base::AutoLock lock(lock_); |
| 36 listener_ = listener; |
| 37 if (!listener) |
| 38 return; |
| 39 |
| 40 std::swap(messages, incoming_message_queue_); |
| 41 } |
| 42 |
| 43 for (const std::string& message : messages) { |
| 44 listener_->OnMessageFromTab(message); |
| 45 } |
| 46 } |
| 47 |
| 48 void HeadlessTabSocketImpl::SendMessageToEmbedder(const std::string& message) { |
| 49 Listener* listener = nullptr; |
| 50 { |
| 51 base::AutoLock lock(lock_); |
| 52 if (listener_) { |
| 53 listener = listener_; |
| 54 } else { |
| 55 incoming_message_queue_.push_back(message); |
| 56 return; |
| 57 } |
| 58 } |
| 59 |
| 60 listener->OnMessageFromTab(message); |
| 61 } |
| 62 |
| 63 void HeadlessTabSocketImpl::AwaitNextMessageFromEmbedder( |
| 64 const AwaitNextMessageFromEmbedderCallback& callback) { |
| 65 std::string message; |
| 66 { |
| 67 base::AutoLock lock(lock_); |
| 68 if (outgoing_message_queue_.empty()) { |
| 69 waiting_for_message_cb_ = callback; |
| 70 DCHECK(!waiting_for_message_cb_.is_null()); |
| 71 return; |
| 72 } else { |
| 73 message = outgoing_message_queue_.front(); |
| 74 outgoing_message_queue_.pop_front(); |
| 75 } |
| 76 } |
| 77 callback.Run(message); |
| 78 } |
| 79 |
| 80 void HeadlessTabSocketImpl::CreateMojoService( |
| 81 mojo::InterfaceRequest<TabSocket> request) { |
| 82 mojo_bindings_.AddBinding(this, std::move(request)); |
| 83 } |
| 84 |
| 85 } // namespace headless |
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