content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you under the Apache License, Version 2.0 (the
   *  "License"); you may not use this file except in compliance
   *  with the License.  You may obtain a copy of the License at
   *
   *        http://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing,
   *  software distributed under the License is distributed on an
   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   *  KIND, either express or implied.  See the License for the
   *  specific language governing permissions and limitations
   *  under the License.
   */
  package org.apache.causeway.core.metamodel.tabular.internal;
  
  import java.util.Optional;
  
  import org.jspecify.annotations.Nullable;
  
  import org.apache.causeway.applib.annotation.Where;
  import org.apache.causeway.applib.services.filter.CollectionFilterService;
  import org.apache.causeway.commons.collections.Can;
  import org.apache.causeway.commons.internal.binding._Bindables;
  import org.apache.causeway.commons.internal.binding._Bindables.BooleanBindable;
  import org.apache.causeway.core.metamodel.consent.InteractionInitiatedBy;
  import org.apache.causeway.core.metamodel.object.ManagedObject;
  import org.apache.causeway.core.metamodel.object.ManagedObjects;
  import org.apache.causeway.core.metamodel.spec.feature.ObjectAssociation;
  import org.apache.causeway.core.metamodel.tabular.DataColumn;
  import org.apache.causeway.core.metamodel.tabular.DataRow;
  
  import org.jspecify.annotations.NonNull;
  
  record DataRowInternal(
      int rowIndex,
      ManagedObject rowElement,
      BooleanBindable selectToggleBindable,
      DataTableInternal parentTable,
      Optional<CollectionFilterService.Tokens> filterTokens
      ) implements DataRow {
  
      DataRowInternal(
              final int rowIndex,
              final @NonNull DataTableInternal parentTable,
              final @NonNull ManagedObject rowElement,
              final CollectionFilterService.@Nullable Tokens filterTokens) {
          this(rowIndex, rowElement, _Bindables.forBoolean(false), parentTable, Optional.ofNullable(filterTokens));
          selectToggleBindable.addListener((event, old, neW)->parentTable.handleRowSelectToggle());
      }
  
      @Override
      public Optional<DataColumn> lookupColumnById(final @NonNull String columnId) {
          return parentTable.dataColumnsObservable().getValue().stream()
                  .filter(dataColumn->dataColumn.columnId().equals(columnId))
                  .findFirst();
      }
  
      /**
       * Can be none, one or many per table cell.
       */
      @Override
      public Can<ManagedObject> getCellElementsForColumn(final @NonNull DataColumn column) {
          final ObjectAssociation assoc = column.associationMetaModel();
          var interactionInitiatedBy = InteractionInitiatedBy.PASS_THROUGH;
          return assoc.getSpecialization().fold(
                  property-> Can.of(
                          // similar to ManagedProperty#reassessPropertyValue
                          property.isVisible(rowElement(), interactionInitiatedBy, Where.ALL_TABLES).isAllowed()
                                  ? property.get(rowElement(), interactionInitiatedBy)
                                  : ManagedObject.empty(property.getElementType())),
                  collection-> ManagedObjects.unpack(
                          collection.isVisible(rowElement(), interactionInitiatedBy, Where.ALL_TABLES).isAllowed()
                                  ? collection.get(rowElement(), interactionInitiatedBy)
                                  : null
                  ));
      }
  
      /**
       * Can be none, one or many per table cell. (returns empty Can if column not found)
       */
      @Override
      public Can<ManagedObject> getCellElementsForColumn(final @NonNull String columnId) {
          return lookupColumnById(columnId)
                  .map(this::getCellElementsForColumn)
                  .orElseGet(Can::empty);
      }
  
  }
  