/*
    * 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.TethysUIScrollButtonManager;
  import io.github.tonywasher.joceanus.tethys.api.field.TethysUIDataEditField.TethysUIScrollButtonField;
  import io.github.tonywasher.joceanus.tethys.api.menu.TethysUIScrollMenu;
  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.TethysUISwingScrollButtonManager;
  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.function.Consumer;
  
  /**
   * ScrollButtonField class.
   *
   * @param <T> the data type
   */
  public final class TethysUISwingScrollButtonField<T>
          extends TethysUISwingDataTextField<T>
          implements TethysUIScrollButtonField<T> {
      /**
       * The scroll manager.
       */
      private final TethysUISwingScrollButtonManager<T> theManager;
  
      /**
       * The configurator.
       */
      private Consumer<TethysUIScrollMenu<T>> theConfigurator;
  
      /**
       * The button.
       */
      private final JButton theButton;
  
      /**
       * Are we editing a cell?
       */
      private boolean isCellEditing;
  
      /**
       * Constructor.
       *
       * @param pFactory the GUI factory
       * @param pClazz   the value class
       */
      TethysUISwingScrollButtonField(final TethysUICoreFactory<?> pFactory,
                                     final Class<T> pClazz) {
          this(pFactory, pClazz, new JLabel());
      }
  
      /**
       * Constructor.
       *
       * @param pFactory the GUI factory
       * @param pClazz   the value class
       * @param pLabel   the label
       */
      private TethysUISwingScrollButtonField(final TethysUICoreFactory<?> pFactory,
                                             final Class<T> pClazz,
                                             final JLabel pLabel) {
          this(pFactory, pFactory.buttonFactory().newScrollButton(pClazz), pLabel);
      }
  
      /**
       * Constructor.
       *
       * @param pFactory the GUI factory
       * @param pManager the manager
       * @param pLabel   the label
       */
      private TethysUISwingScrollButtonField(final TethysUICoreFactory<?> pFactory,
                                             final TethysUIScrollButtonManager<T> pManager,
                                             final JLabel pLabel) {
          /* Initialise underlying class */
          super(pFactory, TethysUISwingNode.getComponent(pManager), pLabel);
  
         /* Store the manager and button */
         theManager = (TethysUISwingScrollButtonManager<T>) pManager;
         theButton = getEditControl();
 
         /* Set listener on manager */
         pManager.getEventRegistrar().addEventListener(this::handleEvent);
         theManager.getMenu().getEventRegistrar().addEventListener(TethysUIEvent.WINDOWCLOSED, e -> haltCellEditing());
 
         /* Set configurator */
         theConfigurator = p -> {
         };
     }
 
     @Override
     public T getCastValue(final Object pValue) {
         return theManager.getValueClass().cast(pValue);
     }
 
     /**
      * handle Scroll 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 void setMenuConfigurator(final Consumer<TethysUIScrollMenu<T>> pConfigurator) {
         theConfigurator = pConfigurator;
         theManager.setMenuConfigurator(theConfigurator);
     }
 
     @Override
     public JButton getEditControl() {
         return (JButton) super.getEditControl();
     }
 
     @Override
     public void setValue(final T pValue) {
         /* Store the value */
         super.setValue(pValue);
 
         /* Declare value to the manager */
         theManager.setValue(pValue);
         getLabel().setText(theButton.getText());
     }
 
     @Override
     public void startCellEditing(final Rectangle pCell) {
         isCellEditing = true;
         final TethysUISwingScrollMenu<T> myMenu = theManager.getMenu();
         theConfigurator.accept(myMenu);
         if (!myMenu.isEmpty()) {
             myMenu.showMenuAtPosition(pCell, SwingConstants.BOTTOM);
         } else {
             haltCellEditing();
         }
     }
 
     /**
      * haltCellEditing.
      */
     private void haltCellEditing() {
         if (isCellEditing) {
             fireEvent(TethysUIEvent.EDITFOCUSLOST, this);
         }
         isCellEditing = false;
     }
 
     @Override
     public TethysUISwingScrollButtonField<T> cloneField(final JLabel pLabel) {
         return new TethysUISwingScrollButtonField<>(getGuiFactory(), theManager.getValueClass(), pLabel);
     }
 }