Content of file JavaFXSafeProxy.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>JavaFXSafeProxy.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 - JavaFX Bindings</a> &gt; <a href="index.source.html" class="el_package">it.tidalwave.role.ui.javafx.impl.util</a> &gt; <span class="el_source">JavaFXSafeProxy.java</span></div><h1>JavaFXSafeProxy.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 &quot;License&quot;); 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 &quot;AS IS&quot; 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.util;

import javax.annotation.Nonnull;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicReference;
import lombok.Getter;
import lombok.RequiredArgsConstructor;
import lombok.Setter;
import lombok.extern.slf4j.Slf4j;

/***********************************************************************************************************************
 *
 * An {@link InvocationHandler} that safely wraps all method calls with {@link #Platform.runLater(Runnable)}. The caller
 * is not blocked if the method is declared as {@code void}; it is blocked otherwise, so it can immediately retrieve
 * the result.
 *
 * This behaviour is required by {@link JavaFXSafeProxyCreator.#createNodeAndDelegate()}.
 *
 * TODO: add support for aysnc returning a Future.
add support for aysnc returning a Future.
* * @author Fabrizio Giudici * **********************************************************************************************************************/ <span class="nc bnc" id="L52" title="All 2 branches missed.">@RequiredArgsConstructor @Slf4j</span> public class JavaFXSafeProxy&lt;T&gt; implements InvocationHandler { <span class="nc bnc" id="L55" title="All 2 branches missed."> @Nonnull @Getter @Setter</span> private T delegate; @Override public Object invoke (@Nonnull final Object proxy, @Nonnull final Method method, @Nonnull final Object[] args) throws Throwable { <span class="nc" id="L62"> final AtomicReference&lt;Object&gt; result = new AtomicReference&lt;&gt;();</span> <span class="nc" id="L63"> final AtomicReference&lt;Throwable&gt; throwable = new AtomicReference&lt;&gt;();</span> <span class="nc" id="L64"> final CountDownLatch waitForReturn = new CountDownLatch(1);</span> <span class="nc" id="L66"> JavaFXSafeRunner.runSafely(() -&gt;</span> { try { <span class="nc" id="L70"> log.trace(&quot;&gt;&gt;&gt;&gt; safely invoking {}&quot;, method);</span> <span class="nc" id="L71"> result.set(method.invoke(delegate, args));</span> } <span class="nc" id="L73"> catch (Throwable t)</span> { <span class="nc" id="L75"> throwable.set(t);</span> <span class="nc" id="L76"> log.warn(&quot;Exception while calling JavaFX&quot;, t);</span> } finally { <span class="nc" id="L80"> waitForReturn.countDown();</span> } <span class="nc" id="L82"> });</span> <span class="nc bnc" id="L84" title="All 2 branches missed."> if (method.getReturnType().equals(void.class))</span> { <span class="nc" id="L86"> return null;</span> } <span class="nc" id="L89"> log.trace(&quot;&gt;&gt;&gt;&gt; waiting for method completion&quot;);</span> <span class="nc" id="L90"> waitForReturn.await();</span> // This is probably useless - void methods return asynchronously <span class="nc bnc" id="L93" title="All 2 branches missed."> if (throwable.get() != null)</span> { <span class="nc" id="L95"> throw throwable.get();</span> } <span class="nc" id="L98"> return result.get();</span> } } </pre><div class="footer"><span class="right">Created with <a href="http://www.jacoco.org/jacoco">JaCoCo</a> 0.8.7.202105040129</span></div></body></html>