JSProcessModel.hpp

#pragma once
#include <Process/Process.hpp>
#include <Process/Script/ScriptProcess.hpp>
 
#include <JS/JSProcessMetadata.hpp>
#include <JS/Qml/QmlObjects.hpp>
#include <score/serialization/MapSerialization.hpp>
#include <QQmlComponent>
 
#include <score_plugin_js_export.h>
 
#include <memory>
#include <verdigris>
class QQuickItem;
 
namespace JS
{
class Script;
class ProcessModel;
 
struct QmlSource {
  QmlSource() = default;
  ~QmlSource() = default;
  QmlSource(const QmlSource&) = default;
  QmlSource(QmlSource&&) = default;
 
  QmlSource(const QString& execution, const QString& ui)
      : execution{execution}
      , ui{ui}
  {
  }
 
  QmlSource(const std::vector<QString>& vec)
  {
    SCORE_ASSERT(vec.size() == 2);
    execution = vec[0];
    ui = vec[1];
  }
 
  QmlSource& operator=(const QmlSource&) = default;
  QmlSource& operator=(QmlSource&&) = default;
 
  QString execution;
  QString ui;
 
  struct MemberSpec
  {
    const QString name;
    const QString QmlSource::*pointer;
    const std::string_view language{};
  };
 
  static const inline std::array<MemberSpec, 2> specification{
                                                              MemberSpec{QObject::tr("Execution"), &QmlSource::execution, "QML"},
                                                              MemberSpec{QObject::tr("GUI"), &QmlSource::ui, "QML"},
  };
 
  friend bool operator==(const QmlSource& lhs, const QmlSource& rhs) {
    return lhs.execution == rhs.execution && lhs.ui == rhs.ui;
  }
  friend bool operator!=(const QmlSource& lhs, const QmlSource& rhs) {
    return !(lhs == rhs);
  }
  friend bool operator!=(const QmlSource& lhs, const std::vector<QString>& rhs) {
    return rhs.size() != 2 || lhs.execution != rhs[0]|| lhs.ui != rhs[1];
  }
  friend bool operator!=(const std::vector<QString>& rhs, const QmlSource& lhs) {
    return rhs.size() != 2 || lhs.execution != rhs[0]|| lhs.ui != rhs[1];
  }
};
 
 
struct ComponentCache
{
  struct Cache
  {
    QByteArray key;
    std::unique_ptr<QQmlComponent> component{};
    std::unique_ptr<JS::Script> object{};
  };
 
  JS::Script*
  getExecution(const JS::ProcessModel& process, const QByteArray& str, bool isFile) noexcept;
  QQmlComponent*
  getUi(const JS::ProcessModel& process, const QByteArray& str, bool isFile) noexcept;
  const Cache* tryGet(const QByteArray& str, bool isFile) const noexcept;
 
  static QByteArray key(const QByteArray& str, bool isFile) noexcept;
 
  ComponentCache();
  ~ComponentCache();
 
private:
  std::vector<Cache> m_map;
 
};
 
class SCORE_PLUGIN_JS_EXPORT ProcessModel final : public Process::ProcessModel
{
  SCORE_SERIALIZE_FRIENDS
  PROCESS_METADATA_IMPL_NOFLAGS(JS::ProcessModel)
  W_OBJECT(ProcessModel)
public:
  bool hasExternalUI() const noexcept { return bool(m_ui_component); }
 
  explicit ProcessModel(
      const TimeVal& duration, const QString& data, const Id<Process::ProcessModel>& id,
      QObject* parent);
 
  template <typename Impl>
  explicit ProcessModel(Impl& vis, QObject* parent)
      : Process::ProcessModel{vis, parent}
  {
    vis.writeTo(*this);
  }
  Process::ProcessFlags flags() const noexcept override;
  void setExecutionScript(const QString& script);
  const QString& executionScript() const noexcept { return m_program.execution; }
  void executionScriptOk() W_SIGNAL(executionScriptOk);
  void executionScriptChanged(const QString& arg_1) W_SIGNAL(executionScriptChanged, arg_1);
  const QByteArray& qmlData() const noexcept { return m_qmlData; }
 
  void setUiScript(const QString& script);
  const QString& uiScript() const noexcept { return m_program.ui; }
  void uiScriptOk() W_SIGNAL(uiScriptOk);
  void uiScriptChanged(const QString& arg_1) W_SIGNAL(uiScriptChanged, arg_1);
 
  void setState(const JS::JSState& s);
  void updateState(const QString& k, const ossia::value& v);
  const JS::JSState& state() const noexcept { return m_state; }
  void stateChanged() W_SIGNAL(stateChanged);
  void stateElementChanged(const QString& k, const ossia::value& v) W_SIGNAL(stateElementChanged, k, v);
 
  JS::Script* currentExecutionObject() const noexcept;
  QQuickItem* currentUI() const noexcept;
  bool isGpu() const noexcept;
  bool hasUi() const noexcept;
  QWidget* createWindowForUI(const score::DocumentContext& ctx,
                             QWidget* parent) const noexcept;
  QQuickItem* createItemForUI(const score::DocumentContext& ctx) const noexcept;
 
  ~ProcessModel() override;
 
  QString rootPath() const noexcept;
 
  const QString& rootFile() const noexcept { return m_root; }
 
  bool followsRootFile() const noexcept { return !m_root.isEmpty() && !m_modified; }
 
  bool externalSourceOutOfDate() const noexcept override { return m_outOfDate; }
  score::Command*
  refreshFromExternalSource(const score::DocumentContext& ctx) const override;
 
  static QmlSource readProgramFromFile(const QString& qmlPath) noexcept;
 
  static QString uiPathFor(const QString& qmlPath) noexcept;
  bool validate(const std::vector<QString>& str) const noexcept;
  void errorMessage(const QString& arg_2) const
      W_SIGNAL(errorMessage, arg_2);
 
  const QmlSource& program() const noexcept { return m_program; }
  [[nodiscard]] Process::ScriptChangeResult setProgram(const QmlSource& f);
  void programChanged() W_SIGNAL(programChanged);
 
  void mapExternalFiles(Process::ExternalFileMap& map) override;
 
  void uiToExecution(const QVariant& v) W_SIGNAL(uiToExecution, v);
  void executionToUi(const QVariant& v) W_SIGNAL(executionToUi, v);
 
  PROPERTY(QString, executionScript READ executionScript WRITE setExecutionScript NOTIFY executionScriptChanged)
  PROPERTY(QString, uiScript READ uiScript WRITE setUiScript NOTIFY uiScriptChanged)
  PROPERTY(JS::QmlSource, program READ program WRITE setProgram NOTIFY programChanged)
  PROPERTY(JS::JSState, state READ state WRITE setState NOTIFY stateChanged)
private:
  QString effect() const noexcept override;
  void loadPreset(const Process::Preset& preset) override;
  Process::Preset savePreset() const noexcept override;
  bool presetMatches(const Process::Preset& preset) const noexcept override;
  Process::ScriptChangeResult setQmlData(const QByteArray&, bool isFile);
 
  QString m_root;
  QmlSource m_program;
  void updateFileLink() noexcept;
 
  QByteArray m_qmlData;
 
  QQmlComponent* m_ui_component{};
  mutable QPointer<QQuickItem> m_ui_object{};
 
  mutable ComponentCache m_cache;
  JS::JSState m_state;
  bool m_isFile{};
  bool m_modified{true};
  bool m_outOfDate{};
};
}
 
W_REGISTER_ARGTYPE(JS::JSState)