PresentationModelObservable.java

  1. /*
  2.  * *************************************************************************************************************************************************************
  3.  *
  4.  * SteelBlue: DCI User Interfaces
  5.  * http://tidalwave.it/projects/steelblue
  6.  *
  7.  * Copyright (C) 2015 - 2025 by Tidalwave s.a.s. (http://tidalwave.it)
  8.  *
  9.  * *************************************************************************************************************************************************************
  10.  *
  11.  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
  12.  * You may obtain a copy of the License at
  13.  *
  14.  *     http://www.apache.org/licenses/LICENSE-2.0
  15.  *
  16.  * 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
  17.  * CONDITIONS OF ANY KIND, either express or implied.  See the License for the specific language governing permissions and limitations under the License.
  18.  *
  19.  * *************************************************************************************************************************************************************
  20.  *
  21.  * git clone https://bitbucket.org/tidalwave/steelblue-src
  22.  * git clone https://github.com/tidalwave-it/steelblue-src
  23.  *
  24.  * *************************************************************************************************************************************************************
  25.  */
  26. package it.tidalwave.ui.javafx.impl.common;

  27. import jakarta.annotation.Nonnull;
  28. import java.util.Optional;
  29. import java.util.function.Supplier;
  30. import javafx.beans.value.ObservableValueBase;
  31. import javafx.scene.control.TableColumn;
  32. import javafx.scene.control.TreeTableColumn;
  33. import it.tidalwave.role.Aggregate;
  34. import it.tidalwave.ui.core.role.PresentationModel;
  35. import lombok.RequiredArgsConstructor;

  36. /***************************************************************************************************************************************************************
  37.  *
  38.  * @author  Fabrizio Giudici
  39.  *
  40.  **************************************************************************************************************************************************************/
  41. @RequiredArgsConstructor
  42. public final class PresentationModelObservable extends ObservableValueBase
  43.   {
  44.     @Nonnull
  45.     private final Supplier<PresentationModel> rowPresentationModelSupplier;

  46.     @Nonnull
  47.     private final Supplier<String> columnKeySupplier;

  48.     @Override @Nonnull
  49.     public PresentationModel getValue()
  50.       {
  51.         final var rowPm = rowPresentationModelSupplier.get();
  52.         final var aggregate =
  53.                 (Optional<Aggregate<PresentationModel>>)(Object)rowPm.maybeAs(Aggregate.class);
  54.         // FIXME: uses the column header names, should be an internal id instead
  55.         return aggregate.flatMap(a -> a.getByName(columnKeySupplier.get()))
  56.                         .map(columnPm -> PresentationModelAsDelegateDecorator.decorating(columnPm, rowPm))
  57.                         .orElse(PresentationModel.empty());
  58.       }

  59.     @Nonnull
  60.     public static PresentationModelObservable of (
  61.             @Nonnull final TableColumn.CellDataFeatures<PresentationModel, PresentationModel> cell)
  62.       {
  63.         return new PresentationModelObservable(
  64.                 () -> cell.getValue(),
  65.                 () -> cell.getTableColumn().getText());
  66.       }

  67.     @Nonnull
  68.     public static PresentationModelObservable of (
  69.             @Nonnull final TreeTableColumn.CellDataFeatures<PresentationModel, PresentationModel> cell)
  70.       {
  71.         return new PresentationModelObservable(
  72.                 () -> cell.getValue().getValue(),
  73.                 () -> cell.getTreeTableColumn().getText());
  74.       }
  75.   }