Slowness with custom event queue

[gschrader]

When you have a custom event queue then any call to waitForIdle will wait until the idleTimeout because the following:

while (eventQueue.peekEvent() != null) 

peekEvent returns an InvocationEvent caused by a timer blinking the caret in the textfield.

Here is a testcase that illustrates the issue:

package org.fest.swing.core;

import org.fest.swing.test.recorder.KeyRecorder;
import org.fest.swing.timing.Condition;
import org.junit.After;
import org.junit.Test;

import java.awt.*;
import java.util.concurrent.Executors;

import static java.awt.event.KeyEvent.*;
import static org.fest.swing.timing.Pause.pause;
import static org.fest.swing.timing.Timeout.timeout;
import static org.fest.util.Arrays.array;

/**
 * Tests for issue with slow waitForIdle with a custom event queue
 *
 * @author Glen Schrader
 * @author Alex Ruiz
 */
public class CustomEventQueue_Test extends BasicRobot_TestCase {
    private CustomEventQueue newEventQueue = new CustomEventQueue();

    @Override
    void beforeShowingWindow() {
        Toolkit.getDefaultToolkit().getSystemEventQueue().push(newEventQueue);
    }

    @After
    public void cleanup() {
        newEventQueue.remove();
    }

    @Test
    public void type_keys_before_timeout() {
        giveFocusToTextField();
        final KeyRecorder recorder = KeyRecorder.attachTo(window.textField);
        Executors.newSingleThreadExecutor().execute(new Runnable() {
            public void run() {
                robot.pressAndReleaseKeys(VK_A, VK_B, VK_C);
            }
        });
        pause(new Condition("until all keys are typed") {
            @Override
            public boolean test() {
                Integer[] expectedKeys = array(VK_A, VK_B, VK_C);
                return recorder.keysWerePressed(expectedKeys) && recorder.keysWereReleased(expectedKeys);
            }
        }, timeout(1000));
    }

    private class CustomEventQueue extends EventQueue {
        protected void dispatchEvent(final AWTEvent event) {
            super.dispatchEvent(event);
        }

        public void remove() {
            pop();
        }
    }
}

As discussed at https://groups.google.com/d/msg/easytesting/bAt1nWx55FM/CPbXguc3whQJ