/*
    * Tethys: GUI Utilities
    * Copyright 2012-2026. Tony Washer
    *
    * Licensed 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 io.github.tonywasher.joceanus.tethys.swing.field;
  
  import io.github.tonywasher.joceanus.oceanus.event.OceanusEvent;
  import io.github.tonywasher.joceanus.tethys.api.base.TethysUIEvent;
  import io.github.tonywasher.joceanus.tethys.api.button.TethysUIListButtonManager;
  import io.github.tonywasher.joceanus.tethys.api.field.TethysUIDataEditField.TethysUIListButtonField;
  import io.github.tonywasher.joceanus.tethys.core.factory.TethysUICoreFactory;
  import io.github.tonywasher.joceanus.tethys.swing.base.TethysUISwingNode;
  import io.github.tonywasher.joceanus.tethys.swing.button.TethysUISwingListButtonManager;
  import io.github.tonywasher.joceanus.tethys.swing.menu.TethysUISwingScrollMenu;
  
  import javax.swing.JButton;
  import javax.swing.JLabel;
  import javax.swing.SwingConstants;
  import java.awt.Rectangle;
  import java.util.Iterator;
  import java.util.List;
  import java.util.function.Supplier;
  
  /**
   * ListButtonField class.
   *
   * @param <T> the data type
   */
  public class TethysUISwingListButtonField<T extends Comparable<? super T>>
          extends TethysUISwingDataTextField<List<T>>
          implements TethysUIListButtonField<T> {
      /**
       * The icon manager.
       */
      private final TethysUISwingListButtonManager<T> theManager;
  
      /**
       * Are we editing a cell?
       */
      private boolean isCellEditing;
  
      /**
       * Constructor.
       *
       * @param pFactory the GUI factory
       */
      TethysUISwingListButtonField(final TethysUICoreFactory<?> pFactory) {
          this(pFactory, new JLabel());
      }
  
      /**
       * Constructor.
       *
       * @param pFactory the GUI factory
       * @param pLabel   the label
       */
      private TethysUISwingListButtonField(final TethysUICoreFactory<?> pFactory,
                                           final JLabel pLabel) {
          this(pFactory, pFactory.buttonFactory().newListButton(), pLabel);
      }
  
      /**
       * Constructor.
       *
       * @param pFactory the GUI factory
       * @param pManager the manager
       * @param pLabel   the label
       */
      private TethysUISwingListButtonField(final TethysUICoreFactory<?> pFactory,
                                           final TethysUIListButtonManager<T> pManager,
                                           final JLabel pLabel) {
          /* Initialise underlying class */
          super(pFactory, TethysUISwingNode.getComponent(pManager), pLabel);
  
          /* Store the manager and button */
          theManager = (TethysUISwingListButtonManager<T>) pManager;
  
          /* Set listener on manager */
          pManager.getEventRegistrar().addEventListener(this::handleEvent);
          theManager.getMenu().getEventRegistrar().addEventListener(TethysUIEvent.WINDOWCLOSED, e -> haltCellEditing());
      }
  
      @SuppressWarnings("unchecked")
      @Override
      public List<T> getCastValue(final Object pValue) {
          return (List<T>) pValue;
      }
 
     /**
      * handle List Button event.
      *
      * @param pEvent the even
      */
     private void handleEvent(final OceanusEvent<TethysUIEvent> pEvent) {
         switch (pEvent.getEventId()) {
             case NEWVALUE:
                 setValue(theManager.getValue());
                 fireEvent(TethysUIEvent.NEWVALUE, pEvent.getDetails());
                 break;
             case EDITFOCUSLOST:
                 haltCellEditing();
                 break;
             default:
                 break;
         }
     }
 
     @Override
     public JButton getEditControl() {
         return (JButton) super.getEditControl();
     }
 
     @Override
     public void setValue(final List<T> pValue) {
         super.setValue(pValue);
         theManager.setValue(pValue);
         updateText();
     }
 
     /**
      * Update the button text.
      */
     private void updateText() {
         getLabel().setText(theManager.getText());
     }
 
     @Override
     public void startCellEditing(final Rectangle pCell) {
         isCellEditing = true;
         theManager.buildMenu();
         final TethysUISwingScrollMenu<T> myMenu = theManager.getMenu();
         myMenu.showMenuAtPosition(pCell, SwingConstants.BOTTOM);
     }
 
     /**
      * haltCellEditing.
      */
     private void haltCellEditing() {
         isCellEditing = false;
     }
 
     @Override
     public TethysUISwingListButtonField<T> cloneField(final JLabel pLabel) {
         return new TethysUISwingListButtonField<>(getGuiFactory(), pLabel);
     }
 
     @Override
     public void setSelectables(final Supplier<Iterator<T>> pSelectables) {
         theManager.setSelectables(pSelectables);
     }
 }