Method loadFromJsonDocument

app/src/DataModel/ProjectModel.cpp:2401–2490

* @brief Deserialises a project from an in-memory QJsonDocument; older-schema * loads deliberately drop customizeWorkspaces and clear m_workspaces because * migrated projects can carry stale refs that would blank the dashboard, so * forcing the auto layout is preferred over honouring those refs. */

 * forcing the auto layout is preferred over honouring those refs.
 */
bool DataModel::ProjectModel::loadFromJsonDocument(const QJsonDocument& document,
                                                   const QString& sourcePath)
{
  if (document.isEmpty())
    return false;

  m_autoSaveSuspended = true;
  if (m_autoSaveTimer)
    m_autoSaveTimer->stop();

  m_groups.clear();
  m_actions.clear();
  m_sources.clear();
  m_workspaces.clear();
  m_widgetSettings  = QJsonObject();
  m_treeExpansion   = QJsonObject();
  m_diagramCollapse = QJsonObject();

  m_filePath = sourcePath;

  const auto json                = document.object();
  const QString legacyParserCode = json.value(QLatin1StringView("frameParser")).toString();
  const bool legacyUniqueIds     = !json.contains(Keys::NextUniqueId);

  const int loadedSchema = ss_jsr(json, Keys::SchemaVersion, 0).toInt();
  const bool olderSchema = loadedSchema < DataModel::kSchemaVersion;

  m_apiCallAllowFullSurface = ss_jsr(json, Keys::ApiCallAllowFullSurface, false).toBool();
  DataModel::ScriptApiCall::setAllowFullSurface(m_apiCallAllowFullSurface);

  m_controlScriptCode = ss_jsr(json, Keys::ControlScriptCode, "").toString();
  DataModel::ControlScript::instance().setCode(m_controlScriptCode);

  loadProjectRootScalars(json);
  loadProjectArrays(json, legacyParserCode);
  enforceGplSingleSource();
  resolveDatasetTransformLanguages();
  resolveDatasetVirtualFlags();

  seedNextUniqueIdFromGroups();
  loadWidgetSettingsAndWorkspaces(json);

  if (olderSchema) {
    m_customizeWorkspaces = false;
    m_workspaces.clear();
  }

  if (legacyUniqueIds) {
    migrateLegacyWorkspaceRefs();
    migrateLegacyXAxisIds();
  }

  migrateLegacyWaterfallYAxisIds();

  loadPointCount(json);
  loadPlotTimeRange(json);
  loadChangeDrivenTransforms(json);
  migrateLegacyLayoutKeys();