/**
    * This file Copyright (c) 2015 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.dam.external.app.field.factory;
  
  import info.magnolia.dam.api.ItemKey;
  import info.magnolia.dam.external.app.field.AssetLinkField;
  import info.magnolia.objectfactory.ComponentProvider;
  import info.magnolia.ui.api.app.AppController;
  import info.magnolia.ui.api.app.ChooseDialogCallback;
  import info.magnolia.ui.api.context.UiContext;
  import info.magnolia.ui.form.field.definition.LinkFieldDefinition;
  import info.magnolia.ui.form.field.factory.AbstractFieldFactory;
  
  import javax.inject.Inject;
  
  import org.apache.commons.lang3.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.vaadin.data.Item;
  import com.vaadin.ui.Button;
  import com.vaadin.ui.Field;
  
  /**
   * {@link AssetLinkField} factory.
   *
   * @param <D> definition.
   */
  public class AssetLinkFieldFactory<D extends LinkFieldDefinition> extends AbstractFieldFactory<D, String> {
  
      private static final Logger log = LoggerFactory.getLogger(AssetLinkFieldFactory.class);
  
      private final AppController appController;
      private final UiContext uiContext;
      private ComponentProvider componentProvider;
  
      private AssetLinkField linkField;
  
      @Inject
      public AssetLinkFieldFactory(D definition, Item relatedFieldItem, AppController appController, UiContext uiContext, ComponentProvider componentProvider) {
          super(definition, relatedFieldItem);
          this.appController = appController;
          this.uiContext = uiContext;
          this.componentProvider = componentProvider;
      }
  
      @Override
      public void setComponentProvider(ComponentProvider componentProvider) {
          super.setComponentProvider(componentProvider);
          this.componentProvider = componentProvider;
      }
  
      @Override
      protected Field<String> createFieldComponent() {
          linkField = new AssetLinkField(definition, componentProvider);
          // Set Caption
          linkField.setButtonCaptionNew(getMessage(definition.getButtonSelectNewLabel()));
          linkField.setButtonCaptionOther(getMessage(definition.getButtonSelectOtherLabel()));
          // Add a callback listener on the select button
          linkField.getSelectButton().addClickListener(createButtonClickListener());
          return linkField;
      }
  
      /**
       * Create the Button click Listener. On click: Create a Dialog and
       * Initialize callback handling.
       */
      private Button.ClickListener createButtonClickListener() {
         return new Button.ClickListener() {
             @Override
             public void buttonClick(Button.ClickEvent event) {
                 ChooseDialogCallback callback = createChooseDialogCallback();
                 String value = linkField.getTextField().getValue();
                 if (StringUtils.isNotBlank(definition.getTargetTreeRootPath())) {
                     appController.openChooseDialog(definition.getAppName(), uiContext, definition.getTargetTreeRootPath(), value, callback);
                 } else {
                     appController.openChooseDialog(definition.getAppName(), uiContext, value, callback);
                 }
             }
         };
     }
 
     protected ChooseDialogCallback createChooseDialogCallback() {
         return new ChooseDialogCallback() {
 
             @Override
             public void onItemChosen(String actionName, final Object chosenValue) {
                 if (chosenValue instanceof ItemKey) {
                     ItemKey key = (ItemKey) chosenValue;
                     String compoundId = key.asString();
                     linkField.setValue(compoundId);
                 }
             }
 
             @Override
             public void onCancel() {
             }
         };
     }
 }