Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/**
 * Copyright 2009 - 2016 Jörgen Lundgren
 * 
 * This file is part of org.macroing.cit.java.
 * 
 * org.macroing.cit.java is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * org.macroing.cit.java is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with org.macroing.cit.java. If not, see <http://www.gnu.org/licenses/>.
 */

import java.awt.Component;

import java.lang.reflect.InvocationTargetException;

import java.util.concurrent.atomic.AtomicReference;
import java.util.function.Consumer;
import java.util.function.Supplier;

import javax.swing.SwingUtilities;

public class Main {
    public static int getWidth(final Component component) {
        return component != null ? runInEDT(() -> Integer.valueOf(component.getWidth())).intValue() : 0;
    }

    /**
     * Runs arbitrary code in the Event Dispatch Thread.
     * <p>
     * Returns the fetched {@code Object}, which may be {@code null}.
     * <p>
     * This method is implemented in terms of {@code runInEDT(supplier, null)}.
     * 
     * @param <T> the type of the returned result
     * @param supplier the {@code Supplier}, which may be {@code null}
     * @return the fetched {@code Object}, which may be {@code null}
     */
    public static <T> T runInEDT(final Supplier<T> supplier) {
        return runInEDT(supplier, null);
    }

    /**
     * Runs arbitrary code in the Event Dispatch Thread.
     * <p>
     * Returns the fetched {@code Object}, which may be {@code null}.
     * <p>
     * This method is implemented in terms of {@code runInEDT(supplier, consumer, null)}.
     * 
     * @param <T> the type of the returned result
     * @param supplier the {@code Supplier}, which may be {@code null}
     * @param consumer the {@code Consumer}, which may be {@code null}
     * @return the fetched {@code Object}, which may be {@code null}
     */
    public static <T> T runInEDT(final Supplier<T> supplier, final Consumer<T> consumer) {
        return runInEDT(supplier, consumer, null);
    }

    /**
     * Runs arbitrary code in the Event Dispatch Thread.
     * <p>
     * The first operation performed by this method is fetching the {@code Object} to return. If {@code supplier} is not {@code null}, its {@code get()} method will be called to fetch the {@code Object}. But if {@code supplier} is {@code null}, or it
     * produces a {@code null} "value" from its {@code get()} method, then {@code defaultObject}, which may also be {@code null}, will be used instead.
     * <p>
     * The second operation performed by this method is handling the {@code Object} to return. So if neither {@code consumer} nor the fetched {@code Object} are {@code null}, the fetched {@code Object} will be handed to {@code consumer}.
     * <p>
     * Returns the fetched {@code Object}, which may be {@code null}.
     * 
     * @param <T> the type of the returned result
     * @param supplier the {@code Supplier}, which may be {@code null}
     * @param consumer the {@code Consumer}, which may be {@code null}
     * @param defaultObject the default {@code Object}, which may be {@code null}
     * @return the fetched {@code Object}, which may be {@code null}
     */
    public static <T> T runInEDT(final Supplier<T> supplier, final Consumer<T> consumer, final T defaultObject) {
        final AtomicReference<T> atomicReference = new AtomicReference<>();

        if (supplier != null) {
            runInEDT(() -> atomicReference.set(supplier.get()));
        }

        if (defaultObject != null) {
            atomicReference.compareAndSet(null, defaultObject);
        }

        if (atomicReference.get() != null && consumer != null) {
            runInEDT(() -> consumer.accept(atomicReference.get()));
        }

        return atomicReference.get();
    }

    /**
     * Runs arbitrary code in the Event Dispatch Thread.
     * 
     * @param runnable the {@code Runnable} to run in the Event Dispatch Thread
     */
    public static void runInEDT(final Runnable runnable) {
        if (runnable != null) {
            if (SwingUtilities.isEventDispatchThread()) {
                runnable.run();
            } else {
                invokeAndWait(runnable);
            }
        }
    }

    /**
     * Invokes {@code runnable} in the Event Dispatch Thread and waits for its execution to complete.
     * <p>
     * This method is similar to the one provided by {@code SwingUtilities}. But it differs in that you don't have to catch its checked {@code Exception}s. It simply ignores them.
     * <p>
     * If {@code runnable} is {@code null}, nothing will happen.
     * 
     * @param runnable the {@code Runnable} to invoke and execute in the Event Dispatch Thread
     */
    public static void invokeAndWait(final Runnable runnable) {
        if (runnable != null) {
            try {
                SwingUtilities.invokeAndWait(runnable);
            } catch (final InvocationTargetException | InterruptedException e) {
                //            Do nothing.
            }
        }
    }
}