Content of file ComboBoxBindings.java.html
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en"><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/><link rel="stylesheet" href="../../jacoco-resources/report.css" type="text/css"/><link rel="shortcut icon" href="../../jacoco-resources/report.gif" type="image/gif"/><title>ComboBoxBindings.java</title><link rel="stylesheet" href="../../jacoco-resources/prettify.css" type="text/css"/><script type="text/javascript" src="../../jacoco-resources/prettify.js"></script></head><body onload="window['PR_TAB_WIDTH']=4;prettyPrint()"><div class="breadcrumb" id="breadcrumb"><span class="info"><a href="../../jacoco-sessions.html" class="el_session">Sessions</a></span><a href="../../index.html" class="el_report">SteelBlue - Examples - Large</a> > <a href="../index.html" class="el_bundle">it-tidalwave-role-ui-javafx</a> > <a href="index.source.html" class="el_package">it.tidalwave.role.ui.javafx.impl.combobox</a> > <span class="el_source">ComboBoxBindings.java</span></div><h1>ComboBoxBindings.java</h1><pre class="source lang-java linenums">/*
* *********************************************************************************************************************
*
* SteelBlue: DCI User Interfaces
* http://tidalwave.it/projects/steelblue
*
* Copyright (C) 2015 - 2021 by Tidalwave s.a.s. (http://tidalwave.it)
*
* *********************************************************************************************************************
*
* 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.
*
* *********************************************************************************************************************
*
* git clone https://bitbucket.org/tidalwave/steelblue-src
* git clone https://github.com/tidalwave-it/steelblue-src
*
* *********************************************************************************************************************
*/
package it.tidalwave.role.ui.javafx.impl.combobox;
import javax.annotation.Nonnull;
import java.util.List;
import java.util.Optional;
import java.util.concurrent.Executor;
import javafx.collections.ObservableList;
import javafx.util.Callback;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.beans.value.ChangeListener;
import javafx.beans.property.ReadOnlyObjectProperty;
import javafx.scene.control.ListCell;
import javafx.scene.control.ListView;
import javafx.scene.control.ComboBox;
import it.tidalwave.role.ui.PresentationModel;
import it.tidalwave.role.ui.UserAction;
import it.tidalwave.role.ui.UserActionProvider;
import it.tidalwave.role.ui.javafx.impl.list.AsObjectListCell;
import it.tidalwave.role.ui.javafx.impl.common.CellBinder;
import it.tidalwave.role.ui.javafx.impl.common.ChangeListenerSelectableAdapter;
import it.tidalwave.role.ui.javafx.impl.common.DelegateSupport;
import it.tidalwave.role.ui.javafx.impl.common.JavaFXWorker;
import lombok.extern.slf4j.Slf4j;
import static it.tidalwave.role.ui.javafx.impl.common.JavaFXWorker.childrenPm;
import static javafx.scene.input.KeyCode.*;
import static it.tidalwave.role.ui.UserActionProvider._UserActionProvider_;
/***********************************************************************************************************************
*
* @author Fabrizio Giudici
*
**********************************************************************************************************************/
<span class="nc" id="L60">@Slf4j</span>
public class ComboBoxBindings extends DelegateSupport
{
@Nonnull
private final CellBinder cellBinder;
private final Callback<ListView<PresentationModel>, ListCell<PresentationModel>> cellFactory;
<span class="nc" id="L68"> private final ChangeListener<PresentationModel> changeListener = new ChangeListenerSelectableAdapter(executor);</span>
/*******************************************************************************************************************
*
* Event handler that executes the default action bound to the given combobox item.
*
******************************************************************************************************************/
<span class="nc" id="L75"> private final EventHandler<ActionEvent> eventHandler = event -></span>
{
<span class="nc" id="L77"> final ComboBox<PresentationModel> comboBox = (ComboBox<PresentationModel>)event.getSource();</span>
<span class="nc" id="L78"> final PresentationModel selectedPm = comboBox.getSelectionModel().getSelectedItem();</span>
<span class="nc" id="L79"> selectedPm.maybeAs(_UserActionProvider_)</span>
<span class="nc" id="L80"> .flatMap(UserActionProvider::getOptionalDefaultAction)</span>
<span class="nc" id="L81"> .ifPresent(UserAction::actionPerformed);</span>
<span class="nc" id="L82"> };</span>
/*******************************************************************************************************************
*
*
*
******************************************************************************************************************/
public ComboBoxBindings (@Nonnull final Executor executor, @Nonnull final CellBinder cellBinder)
{
<span class="nc" id="L91"> super(executor);</span>
<span class="nc" id="L92"> this.cellBinder = cellBinder;</span>
<span class="nc" id="L93"> cellFactory = comboBox -> new AsObjectListCell<>(cellBinder);</span>
<span class="nc" id="L94"> }</span>
/*******************************************************************************************************************
*
* {@inheritDoc}
*
******************************************************************************************************************/
public void bind (@Nonnull final ComboBox<PresentationModel> comboBox,
@Nonnull final PresentationModel pm,
@Nonnull final Optional<Runnable> callback)
{
<span class="nc" id="L105"> comboBox.setCellFactory(cellFactory);</span>
<span class="nc" id="L106"> comboBox.setButtonCell(new AsObjectListCell<>(cellBinder));</span>
<span class="nc" id="L107"> comboBox.setOnAction(eventHandler);</span>
// FIXME: WEAK LISTENERS
// FIXME: this won't work with any external navigation system, such as CEC menus
// TODO: try by having CEC selection emulating RETURN and optionally accepting RETURN here
<span class="nc" id="L113"> comboBox.setOnKeyPressed(event -></span>
{
<span class="nc bnc" id="L115" title="All 2 branches missed."> if (List.of(SPACE, ENTER).contains(event.getCode()))</span>
{
<span class="nc" id="L117"> comboBox.show();</span>
}
<span class="nc" id="L119"> });</span>
<span class="nc" id="L121"> final ReadOnlyObjectProperty<PresentationModel> selectedProperty = comboBox.getSelectionModel().selectedItemProperty();</span>
<span class="nc" id="L122"> selectedProperty.removeListener(changeListener);</span>
<span class="nc" id="L123"> JavaFXWorker.run(executor,</span>
<span class="nc" id="L124"> () -> childrenPm(pm),</span>
<span class="nc" id="L125"> items -> finalize(comboBox, items, selectedProperty, callback));</span>
<span class="nc" id="L126"> }</span>
/*******************************************************************************************************************
*
******************************************************************************************************************/
private void finalize (@Nonnull final ComboBox<PresentationModel> comboBox,
@Nonnull final ObservableList<PresentationModel> items,
@Nonnull final ReadOnlyObjectProperty<PresentationModel> selectedProperty,
@Nonnull final Optional<Runnable> callback)
{
<span class="nc" id="L136"> comboBox.setItems(items);</span>
<span class="nc bnc" id="L138" title="All 2 branches missed."> if (!items.isEmpty())</span>
{
<span class="nc" id="L140"> comboBox.getSelectionModel().select(items.get(0));</span>
}
<span class="nc" id="L143"> selectedProperty.addListener(changeListener);</span>
<span class="nc" id="L144"> callback.ifPresent(Runnable::run);</span>
<span class="nc" id="L145"> }</span>
}
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