/**
 * PlatformUtil.java
 *
 * Copyright (c) 2011-2015, JFXtras
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the organization nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package be.iminds.ilabt.jfed.util;

import com.sun.javafx.tk.Toolkit;
import javafx.application.Platform;

import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executor;
import java.util.concurrent.FutureTask;

/**
 * User: Tom Eugelink
 * Date: 26-12-13
 * Time: 14:02
 */
public class FXPlatformUtil {

    /**
     * Invokes a Runnable in JFX Thread and waits until it's finished.
     * Similar to SwingUtilities.invokeAndWait.
     * This method is not intended to be called from the FAT, but when this happens the runnable is executed synchronously.
     *
     * @param runnable
     *            The Runnable that has to be executed on JFX application thread.
     * @throws RuntimeException which wraps a possible InterruptedException or ExecutionException
     */
    static public void runAndWait(final Runnable runnable) {
        // running this from the FAT
        if (Platform.isFxApplicationThread()) {
            runnable.run();
            return;
        }

        // run from a separate thread
        try {
            FutureTask<Void> future = new FutureTask<>(runnable, null);
            Platform.runLater(future);
            future.get();
        }
        catch (InterruptedException | ExecutionException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * Invokes a Callable in JFX Thread and waits until it's finished.
     * Similar to SwingUtilities.invokeAndWait.
     * This method is not intended to be called from the FAT, but when this happens the callable is executed synchronously.
     *
     * @param callable
     *            The Callable that has to be executed on JFX application thread.
     * @return the result of callable.call();
     * @throws RuntimeException which wraps a possible Exception, InterruptedException or ExecutionException
     */
    static public <V> V runAndWait(final Callable<V> callable) {
        // running this from the FAT
        if (Platform.isFxApplicationThread()) {
            try {
                return callable.call();
            }
            catch (Exception e) {
                throw new RuntimeException(e);
            }
        }

        // run from a separate thread
        try {
            FutureTask<V> future = new FutureTask<>(callable);
            Platform.runLater(future);
            return future.get();
        }
        catch (InterruptedException | ExecutionException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     *
     */
    static public void waitForPaintPulse() {
        FXPlatformUtil.runAndWait(() -> Toolkit.getToolkit().firePulse());
    }

    public static Executor getExecutor() {
        return Platform::runLater;
    }
}
