/**
    * This file Copyright (c) 2015-2018 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.ui.workbench.contenttool.search;
  
  import info.magnolia.i18nsystem.SimpleTranslator;
  import info.magnolia.ui.vaadin.extension.ShortcutProtector;
  import info.magnolia.ui.vaadin.icon.Icon;
  
  import java.util.Arrays;
  
  import javax.inject.Inject;
  
  import org.apache.commons.lang3.StringUtils;
  
  import com.vaadin.event.FieldEvents.FocusListener;
  import com.vaadin.event.ShortcutAction;
  import com.vaadin.ui.Button;
  import com.vaadin.ui.Component;
  import com.vaadin.ui.CssLayout;
  import com.vaadin.v7.data.Property;
  import com.vaadin.v7.ui.TextField;
  
  /**
   * Implementation of {@link SearchContentToolView}.
   */
  public class SearchContentToolViewImpl extends CssLayout implements SearchContentToolView {
  
      private final SimpleTranslator i18n;
  
      private TextField searchField;
  
      private SearchContentToolView.Listener listener;
  
      private final Property.ValueChangeListener searchFieldListener = new Property.ValueChangeListener() {
  
          @Override
          public void valueChange(Property.ValueChangeEvent event) {
              listener.onSearch(searchField.getValue());
  
              boolean hasSearchContent = !searchField.getValue().isEmpty();
              if (hasSearchContent) {
                  addStyleName("has-content");
              } else {
                  removeStyleName("has-content");
              }
              searchField.focus();
          }
      };
  
      @Inject
      public SearchContentToolViewImpl(SimpleTranslator i18n) {
          this.i18n = i18n;
          Button clearSearchBoxButton = new Button();
          clearSearchBoxButton.setStyleName("m-closebutton");
          clearSearchBoxButton.addStyleName("icon-delete-search");
          clearSearchBoxButton.addStyleName("searchbox-clearbutton");
          // Preventing the button to spoil the tab-navigation due to its changing display value.
          clearSearchBoxButton.setTabIndex(-1);
          clearSearchBoxButton.addClickListener((Button.ClickListener) event -> searchField.clear());
  
          Icon searchIcon = new Icon("search");
          searchIcon.addStyleName("searchbox-icon");
  
          searchField = buildSearchField();
  
          setVisible(true);
          addComponent(searchIcon);
          addComponent(searchField);
         addComponent(clearSearchBoxButton);
         setStyleName("searchbox");
     }
 
     private TextField buildSearchField() {
         final TextField field = new TextField();
         ShortcutProtector.extend(field, Arrays.asList(ShortcutAction.KeyCode.ENTER));
         final String inputPrompt = i18n.translate("toolbar.search.prompt");
 
         field.setInputPrompt(inputPrompt);
         field.setSizeUndefined();
         field.addStyleName("searchfield");
 
         // TextField has to be immediate to fire value changes when pressing Enter, avoiding ShortcutListener overkill.
         field.addValueChangeListener(searchFieldListener);
 
         field.addFocusListener((FocusListener) event -> {
             // put the cursor at the end of the field
             TextField tf = (TextField) event.getSource();
             tf.setCursorPosition(tf.getValue().length());
         });
 
         // No blur handler.
         return field;
     }
 
     @Override
     public void setListener(SearchContentToolView.Listener listener) {
         this.listener = listener;
     }
 
     @Override
     public void setSearchQuery(String searchQuery) {
         if (searchField == null) {
             return;
         }
         // turn off value change listener, so that presenter does not think there was user input and searches again
         searchField.removeValueChangeListener(searchFieldListener);
         if (StringUtils.isNotBlank(searchQuery)) {
             searchField.setValue(searchQuery);
             searchField.focus();
         } else {
             searchField.setValue("");
             removeStyleName("has-content");
         }
         searchField.addValueChangeListener(searchFieldListener);
     }
 
     @Override
     public Component asVaadinComponent() {
         return this;
     }
 }