// 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.

#include "services/ui/ime/ime_driver_bridge.h"

#include "services/service_manager/public/cpp/connector.h"
#include "services/ui/ime/ime_registrar_impl.h"

namespace ui {

IMEDriverBridge::IMEDriverBridge() {}

IMEDriverBridge::~IMEDriverBridge() {}

void IMEDriverBridge::Init(service_manager::Connector* connector,
                           bool is_test_config) {
  if (is_test_config)
    connector->StartService("test_ime_driver");
  // For non test configs we assume a client registers with us.
}

void IMEDriverBridge::AddBinding(mojom::IMEDriverRequest request) {
  bindings_.AddBinding(this, std::move(request));
}

void IMEDriverBridge::SetDriver(mojom::IMEDriverPtr driver) {
  // TODO(moshayedi): crbug.com/669681. Handle switching drivers properly. For
  // now we only register the first driver to avoid clients of the previous
  // driver from hanging.
  if (driver_)
    return;

  driver_ = std::move(driver);

  while (!pending_requests_.empty()) {
    driver_->StartSession(std::move(pending_requests_.front()));
    pending_requests_.pop();
  }
}

void IMEDriverBridge::StartSession(mojom::StartSessionDetailsPtr details) {
  if (driver_.get()) {
    // TODO(moshayedi): crbug.com/634431. This will forward all calls from
    // clients to the driver as they are. We may need to check |caret_bounds|
    // parameter of InputMethod::OnCaretBoundsChanged() here and limit them to
    // client's focused window.
    driver_->StartSession(std::move(details));
  } else {
    pending_requests_.push(std::move(details));
  }
}

}  // namespace ui