flutter_flutter/engine/src/flutter/runtime/runtime_controller.cc

// Copyright 2015 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 "flutter/runtime/runtime_controller.h"

#include "flutter/glue/trace_event.h"
#include "flutter/lib/ui/compositing/scene.h"
#include "flutter/lib/ui/ui_dart_state.h"
#include "flutter/lib/ui/window/window.h"
#include "flutter/runtime/dart_controller.h"
#include "flutter/runtime/runtime_delegate.h"
#include "lib/tonic/dart_message_handler.h"

using tonic::DartState;

namespace blink {

std::unique_ptr<RuntimeController> RuntimeController::Create(
    RuntimeDelegate* client) {
  return std::unique_ptr<RuntimeController>(new RuntimeController(client));
}

RuntimeController::RuntimeController(RuntimeDelegate* client)
    : client_(client) {}

RuntimeController::~RuntimeController() {}

void RuntimeController::CreateDartController(
    const std::string& script_uri, const uint8_t* isolate_snapshot_data,
    const uint8_t* isolate_snapshot_instr) {
  FTL_DCHECK(!dart_controller_);

  dart_controller_.reset(new DartController());
  dart_controller_->CreateIsolateFor(
      script_uri, isolate_snapshot_data, isolate_snapshot_instr,
      std::make_unique<UIDartState>(this, std::make_unique<Window>(this)));

  UIDartState* dart_state = dart_controller_->dart_state();
  DartState::Scope scope(dart_state);
  dart_state->window()->DidCreateIsolate();
  client_->DidCreateMainIsolate(dart_state->isolate());

  Window* window = GetWindow();

  window->UpdateWindowMetrics(viewport_metrics_);
  window->UpdateLocale(language_code_, country_code_);

  if (semantics_enabled_)
    window->UpdateSemanticsEnabled(semantics_enabled_);
}

void RuntimeController::SetViewportMetrics(const ViewportMetrics& metrics) {
  viewport_metrics_ = metrics;
  GetWindow()->UpdateWindowMetrics(viewport_metrics_);
}

void RuntimeController::SetLocale(const std::string& language_code,
                                  const std::string& country_code) {
  if (language_code_ == language_code && country_code_ == country_code)
    return;

  language_code_ = language_code;
  country_code_ = country_code;
  GetWindow()->UpdateLocale(language_code_, country_code_);
}

void RuntimeController::SetSemanticsEnabled(bool enabled) {
  if (semantics_enabled_ == enabled)
    return;
  semantics_enabled_ = enabled;
  GetWindow()->UpdateSemanticsEnabled(semantics_enabled_);
}

void RuntimeController::BeginFrame(ftl::TimePoint frame_time) {
  GetWindow()->BeginFrame(frame_time);
}

void RuntimeController::DispatchPlatformMessage(
    ftl::RefPtr<PlatformMessage> message) {
  TRACE_EVENT0("flutter", "RuntimeController::DispatchPlatformMessage");
  GetWindow()->DispatchPlatformMessage(std::move(message));
}

void RuntimeController::DispatchPointerDataPacket(
    const PointerDataPacket& packet) {
  TRACE_EVENT0("flutter", "RuntimeController::DispatchPointerDataPacket");
  GetWindow()->DispatchPointerDataPacket(packet);
}

void RuntimeController::DispatchSemanticsAction(int32_t id,
                                                SemanticsAction action) {
  TRACE_EVENT0("flutter", "RuntimeController::DispatchSemanticsAction");
  GetWindow()->DispatchSemanticsAction(id, action);
}

Window* RuntimeController::GetWindow() {
  return dart_controller_->dart_state()->window();
}

void RuntimeController::ScheduleFrame() {
  client_->ScheduleFrame();
}

void RuntimeController::Render(Scene* scene) {
  client_->Render(scene->takeLayerTree());
}

void RuntimeController::UpdateSemantics(SemanticsUpdate* update) {
  if (semantics_enabled_)
    client_->UpdateSemantics(update->takeNodes());
}

void RuntimeController::HandlePlatformMessage(
    ftl::RefPtr<PlatformMessage> message) {
  client_->HandlePlatformMessage(std::move(message));
}

void RuntimeController::DidCreateSecondaryIsolate(Dart_Isolate isolate) {
  client_->DidCreateSecondaryIsolate(isolate);
}

Dart_Port RuntimeController::GetMainPort() {
  if (!dart_controller_) {
    return ILLEGAL_PORT;
  }
  if (!dart_controller_->dart_state()) {
    return ILLEGAL_PORT;
  }
  return dart_controller_->dart_state()->main_port();
}

std::string RuntimeController::GetIsolateName() {
  if (!dart_controller_) {
    return "";
  }
  if (!dart_controller_->dart_state()) {
    return "";
  }
  return dart_controller_->dart_state()->debug_name();
}

bool RuntimeController::HasLivePorts() {
  if (!dart_controller_) {
    return false;
  }
  UIDartState* dart_state = dart_controller_->dart_state();
  if (!dart_state) {
    return false;
  }
  DartState::Scope scope(dart_state);
  return Dart_HasLivePorts();
}

tonic::DartErrorHandleType RuntimeController::GetLastError() {
  if (!dart_controller_) {
    return tonic::kNoError;
  }
  UIDartState* dart_state = dart_controller_->dart_state();
  if (!dart_state) {
    return tonic::kNoError;
  }
  return dart_state->message_handler().isolate_last_error();
}

}  // namespace blink