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/*
* Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
@test
@key headful
@bug 4632143
@summary Unit test for the RFE window/frame/dialog always on top
@author dom@sparc.spb.su: area=awt.toplevel
@run main/othervm/timeout=600 AutoTestOnTop
*/
import java.awt.AWTEvent;
import java.awt.AWTException;
import java.awt.Component;
import java.awt.Dialog;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.IllegalComponentStateException;
import java.awt.Point;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.Window;
import java.awt.event.AWTEventListener;
import java.awt.event.FocusEvent;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.event.PaintEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Vector;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JWindow;
/**
* @author tav@sparc.spb.su
* @author dom@sparc.spb.su
* Tests that always-on-top windows combine correctly with different kinds of window in different styles and conditions.
*
* !!! WARNING !!!
* The test fails sometimes because the toFront() method doesn't guarantee
* that after its invocation the frame will be placed above all other windows.
*/
public class AutoTestOnTop {
private static final int X = 300;
private static final int Y = 300;
static Window topw;
static Frame parentw = new Frame();
static Window f;
static Frame parentf = new Frame();
static final Object uncheckedSrc = new Object(); // used when no need to check event source
static volatile Object eventSrc = uncheckedSrc;
static boolean dispatchedCond;
static Semaphore STATE_SEMA = new Semaphore();
static Semaphore VIS_SEMA = new Semaphore();
static Vector errors = new Vector();
static boolean isUnix = false;
static StringBuffer msgError = new StringBuffer();
static StringBuffer msgCase = new StringBuffer();
static StringBuffer msgAction = new StringBuffer();
static StringBuffer msgFunc = new StringBuffer();
static StringBuffer msgVisibility = new StringBuffer();
static volatile int stageNum;
static volatile int actNum;
static volatile int testResult = 0;
static volatile boolean doCheckEvents;
static volatile boolean eventsCheckPassed;
static boolean[] eventsCheckInitVals = new boolean[] { // Whether events are checked for abcence or precence
true, true, true, true, true, false, false, false, false
};
static String[] msgEventsChecks = new String[] {
null, null, null, null, null,
"expected WindowEvent.WINDOW_STATE_CHANGED hasn't been generated",
"expected WindowEvent.WINDOW_STATE_CHANGED hasn't been generated",
"expected WindowEvent.WINDOW_STATE_CHANGED hasn't been generated",
"expected WindowEvent.WINDOW_STATE_CHANGED hasn't been generated",
};
static final int stagesCount = 7;
static final int actionsCount = 9;
static Method[] preActions = new Method[actionsCount];
static Method[] postActions = new Method[actionsCount];
static Method[] isActionsAllowed = new Method[actionsCount];
static Method[] checksActionEvents = new Method[actionsCount];
static Robot robot;
static boolean doStartTest;
static String osName = System.getProperty("os.name");
public static void main(String[] args) {
checkTesting();
}
public static void performTesting() {
isUnix = osName.equals("Linux") || osName.equals("SunOS");
Toolkit.getDefaultToolkit().addAWTEventListener(new AWTEventListener() {
public void eventDispatched(AWTEvent e) {
if (e.getID() == MouseEvent.MOUSE_CLICKED) {
if (eventSrc != null & eventSrc != uncheckedSrc && e.getSource() != eventSrc) {
error("Test failed: stage #" + stageNum + ", action # " + actNum + ": " + msgCase + ": " + msgAction + ": " + msgError);
testResult = -1;
}
if (eventSrc != null){
synchronized (eventSrc) {
dispatchedCond = true;
eventSrc.notify();
}
}
}
if (doCheckEvents && (e.getSource() == topw || e.getSource() == f)) {
//System.err.println("AWTEventListener: catched the event " + e);
try {
checksActionEvents[actNum].invoke(null, new Object[] {e});
} catch (InvocationTargetException ite) {
ite.printStackTrace();
} catch (IllegalAccessException iae) {
iae.printStackTrace();
}
return;
}
}
}, 0xffffffffffffffffL);
Method[] allMethods;
try {
allMethods = AutoTestOnTop.class.getDeclaredMethods();
} catch (SecurityException se) {
throw new RuntimeException(se);
}
for (int i = 0; i < allMethods.length; i++) {
String name = allMethods[i].getName();
if (name.startsWith("preAction")) {
preActions[name.charAt(name.length() - 1) - '0'] = allMethods[i];
} else if (name.startsWith("postAction")) {
postActions[name.charAt(name.length() - 1) - '0'] = allMethods[i];
} else if (name.startsWith("isActionAllowed")) {
isActionsAllowed[name.charAt(name.length() - 1) - '0'] = allMethods[i];
} else if (name.startsWith("checkActionEvents")) {
checksActionEvents[name.charAt(name.length() - 1) - '0'] = allMethods[i];
}
}
f = new Frame("Auxiliary Frame");
f.setBounds(X, Y, 650, 100);
f.setVisible(true);
waitTillShown(f);
try {
robot = new Robot();
robot.setAutoDelay(100);
} catch (AWTException e) {
throw new RuntimeException("Error: unable to create robot", e);
}
mainTest();
if (testResult != 0) {
System.err.println("The following errors were encountered: ");
for (int i = 0; i < errors.size(); i++) {
System.err.println(errors.get(i).toString());
}
throw new RuntimeException("Test failed.");
} else {
System.err.println("Test PASSED.");
}
}
public static void mainTest() {
// stageNum = 0;
// for (int i = 0; i < 5; i++) {
// actNum = 2;
// System.err.println("************************* A C T I O N " + actNum + " *************************");
// doStage(stageNum, actNum);
// // pause(500);
// actNum = 3;
// System.err.println("************************* A C T I O N " + actNum + " *************************");
// doStage(stageNum, actNum);
// // pause(500);
// }
for (stageNum = 0; stageNum < stagesCount; stageNum++) {
System.err.println("************************* S T A G E " + stageNum + " *************************");
for (actNum = 0; actNum < actionsCount; actNum++) {
System.err.println("************************* A C T I O N " + actNum + " *************************");
doStage(stageNum, actNum);
} // for thru actNum
} // fow thru stageNum
eventSrc = null;
}
private static void doStage(int stageNum, int actNum) {
try {
if (!((Boolean)isActionsAllowed[actNum].invoke(null, new Object[0])).booleanValue()) {
System.err.println("Action skipped due to a platform limitations");
return;
}
STATE_SEMA.reset();
createWindow(stageNum);
//*************************
// Set window always-on-top
//*************************
preActions[actNum].invoke(null, new Object[0]);
setAlwaysOnTop(topw, true);
waitForIdle(true);
if (!topw.isAlwaysOnTopSupported()) return;
postActions[actNum].invoke(null, new Object[0]);
waitForIdle(false);
STATE_SEMA.reset();
testForAlwaysOnTop();
//*****************************
// Set window not always-on-top
//*****************************
preActions[actNum].invoke(null, new Object[0]);
setAlwaysOnTop(topw, false);
waitForIdle(true);
postActions[actNum].invoke(null, new Object[0]);
waitForIdle(false);
STATE_SEMA.reset();
testForNotAlwaysOnTop();
} catch (InvocationTargetException ite) {
ite.printStackTrace();
} catch (Exception ex) {
throw new RuntimeException(ex);
}
}
private static void checkTesting() {
if (Toolkit.getDefaultToolkit().isAlwaysOnTopSupported()) {
performTesting();
}
}
public static void testForAlwaysOnTop() {
System.err.println("Checking for always-on-top " + topw);
ensureInitialWinPosition(topw);
// Check that always-on-top window is topmost.
// - Click on always-on-top window on the windows cross area.
clickOn(topw, f, 10, 50, "setting " + msgVisibility +
" window (1) always-on-top didn't make it topmost");
// Check that we can't change z-order of always-on-top window.
// - a) Try to put the other window on the top.
f.toFront();
clickOn(uncheckedSrc, f, 450, 50, ""); // coz toFront() works not always
pause(300);
// - b) Click on always-on-top window on the windows cross area.
clickOn(topw, f, 10, 50, "setting " + msgVisibility +
" window (1) always-on-top didn't make it such");
// Ask for always-on-top property
if (isAlwaysOnTop(topw) != true)
error("Test failed: stage #" + stageNum + ", action #" + actNum + ": " + msgCase + ": " + msgAction +
": isAlwaysOnTop() returned 'false' for window (1) set always-on-top at state "
+ msgVisibility);
}
public static void testForNotAlwaysOnTop() {
System.err.println("Checking for non always-on-top of " + topw);
ensureInitialWinPosition(topw);
if (msgVisibility.equals("visible") && actNum != 2) {
// Check that the window remains topmost.
// - click on the window on the windows cross area.
clickOn(topw, f, 10, 50, "setting " + msgVisibility +
" window (1) not always-on-top didn't keep it topmost");
}
// Check that we can change z-order of not always-on-top window.
// - a) try to put the other window on the top.
f.toFront();
clickOn(uncheckedSrc, f, 450, 50, ""); // coz toFront() works not always
pause(300);
// - b) click on not always-on-top window on the windows cross area.
clickOn(f, f, 10, 50, "setting " + msgVisibility +
" window (1) not always-on-top didn't make it such");
// Ask for always-on-top property
if (isAlwaysOnTop(topw) != false)
error("Test failed: stage #" + stageNum + ", action #" + actNum + ": " + msgCase + ": " + msgAction +
": isAlwaysOnTop() returned 'true' for window (1) set not always-on-top at state "
+ msgVisibility);
}
private static void createWindow(int stageNum) {
// Free native resourses
if (topw != null) {
topw.dispose();
}
switch (stageNum) {
case 0:
topw = new Frame("Top Frame");
msgCase.replace(0, msgCase.length(), "Frame (1) over Frame (2)");
break;
case 1:
topw = new JFrame("Top JFrame");
msgCase.replace(0, msgCase.length(), "JFrame (1) over Frame (2)");
break;
case 2:
topw = new Dialog(parentw, "Top Dialog");
msgCase.replace(0, msgCase.length(), "Dialog (1) over Frame (2)");
break;
case 3:
topw = new JDialog(parentw, "Top JDialog");
msgCase.replace(0, msgCase.length(), "JDialog (1) over Frame (2)");
break;
case 4:
topw = new Frame("Top Frame");
f.dispose();
f = new Dialog(parentf, "Auxiliary Dialog");
f.setBounds(X, Y, 650, 100);
f.setVisible(true);
waitTillShown(f);
msgCase.replace(0, msgCase.length(), "Frame (1) over Dialog (2)");
break;
case 5:
topw = new Window(parentw);
msgCase.replace(0, msgCase.length(), "Window (1) over Frame (2)");
break;
case 6:
topw = new JWindow(parentw);
msgCase.replace(0, msgCase.length(), "JWindow (1) over Frame (2)");
break;
}
topw.addWindowStateListener(new WindowAdapter() {
public void windowStateChanged(WindowEvent e) {
System.err.println("* " + e);
STATE_SEMA.raise();
}
});
topw.setSize(300, 100);
}
/**
* 0: setting always-on-top to invisible window
* 1: setting always-on-top to visible window
* 2: always-on-top on visible non-focusable window
* 3: always-on-top on visible, dragging topw after that
* 4: always-on-top on visible, dragging f after that
* 5: always-on-top on (visible, maximized), make normal after that
* 6: always-on-top on (visible, iconified), make normal after that
* 7: always-on-top on visible, iconify/deiconify after that
* 8: always-on-top on visible, maximize/restore after that
*/
public static void preAction_0() {
topw.setVisible(false);
}
public static void postAction_0() {
if (topw.isShowing()) {
error("Test failed: stage #" + stageNum + ", action #" + actNum + ": " + msgCase +
": no actions with windows: changing always-on-top property at window (1) state 'invisible' makes window (1) visible");
}
setWindowVisible("no actions with windows", "invisible");
}
public static boolean isActionAllowed_0() {
// Window on Linux is always always-on-top!
return !((stageNum == 5 || stageNum == 6) && isUnix) && (stageNum < stagesCount);
}
public static void checkActionEvents_0(AWTEvent e) {
System.err.println(e.toString());
}
public static void preAction_1() {
setWindowVisible("no actions with windows", "visible");
}
public static void postAction_1() {}
public static boolean isActionAllowed_1() {
return !((stageNum == 5 || stageNum == 6) && isUnix) && (stageNum < stagesCount );
}
public static void checkActionEvents_1(AWTEvent e) {
System.err.println(e.toString());
if (e instanceof PaintEvent) {
return;
}
eventsCheckPassed = false;
error("Test failed: stage #" + stageNum + ", action # " + actNum + ": " + msgCase + ": " + msgAction + ": after call " + msgFunc +
": unexpected event " + e + " was generated");
}
public static void preAction_2() {
setWindowVisible("when window (1) set not focusable", "visible");
topw.setFocusableWindowState(false);
f.toFront();
pause(300);
}
public static void postAction_2() {}
public static boolean isActionAllowed_2() {
return !((stageNum == 5 || stageNum == 6) && isUnix) && (stageNum < stagesCount);
}
public static void checkActionEvents_2(AWTEvent e) {
System.err.println(e.toString());
if ( (e.getID() >= FocusEvent.FOCUS_FIRST && e.getID() <= FocusEvent.FOCUS_LAST) ||
(e.getID() == WindowEvent.WINDOW_LOST_FOCUS && e.getID() == WindowEvent.WINDOW_GAINED_FOCUS)) {
eventsCheckPassed = false;
error("Test failed: stage #" + stageNum + ", action # " + actNum + ": " + msgCase + ": " +
msgAction + ": after call " + msgFunc +
": unexpected event " + e + " was generated");
}
}
public static void preAction_3() {
setWindowVisible("after dragging", "visible");
}
public static void postAction_3() {
Point p = topw.getLocationOnScreen();
int x = p.x + 150, y = p.y + 5;
try { // Take a pause to avoid double click
Thread.sleep(500); // when called one after another.
} catch (InterruptedException ie) {
ie.printStackTrace();
} catch (IllegalComponentStateException e) {
e.printStackTrace();
}
// Drag the window.
robot.mouseMove(x, y);
robot.mousePress(InputEvent.BUTTON1_MASK);
robot.mouseMove(X + 150, Y + 100);
robot.mouseMove(x, y);
robot.mouseRelease(InputEvent.BUTTON1_MASK);
}
public static boolean isActionAllowed_3() {
return (stageNum < 5);
}
public static void checkActionEvents_3(AWTEvent e) {
System.err.println(e.toString());
}
public static void preAction_4() {
setWindowVisible("after dragging window (2)", "visible");
}
public static void postAction_4() {
Point p = f.getLocationOnScreen();
int x = p.x + 400, y = p.y + 5;
try { // Take a pause to avoid double click
Thread.sleep(500); // when called one after another.
} catch (InterruptedException ie) {
ie.printStackTrace();
} catch (IllegalComponentStateException e) {
e.printStackTrace();
}
// Drag the window.
robot.mouseMove(x, y);
robot.mousePress(InputEvent.BUTTON1_MASK);
robot.mouseMove(X + 400, Y + 100);
robot.mouseMove(x, y);
robot.mouseRelease(InputEvent.BUTTON1_MASK);
ensureInitialWinPosition(f);
}
public static boolean isActionAllowed_4() {
return !((stageNum == 5 || stageNum == 6) && isUnix);
}
public static void checkActionEvents_4(AWTEvent e) {
System.err.println(e.toString());
}
// Metacity has a bug not allowing to set a window to NORMAL state!!!
public static void preAction_5() {
setWindowVisible("at state 'maximized'", "visible");
((Frame)topw).setExtendedState(Frame.MAXIMIZED_BOTH);
waitForStateChange();
}
public static void postAction_5() {
((Frame)topw).setExtendedState(Frame.NORMAL);
waitForStateChange();
}
public static boolean isActionAllowed_5() {
return (stageNum < 2);
}
public static void checkActionEvents_5(AWTEvent e) {
System.err.println("=" + e.toString());
if (e.getID() == WindowEvent.WINDOW_STATE_CHANGED) {
eventsCheckPassed = true;
}
}
public static void preAction_6() {
setWindowVisible("at state 'iconified'", "visible");
System.err.println("Iconifying " + topw);
((Frame)topw).setExtendedState(Frame.ICONIFIED);
if (!waitForStateChange()) {
error("Test failed: stage #" + stageNum + ", action # " + actNum + ": " + msgCase + ": " + msgAction + ": after call " + msgFunc +
": state change to ICONIFIED hasn't been generated");
}
}
public static void postAction_6() {
System.err.println("Restoring " + topw);
((Frame)topw).setExtendedState(Frame.NORMAL);
if (!waitForStateChange()) {
error("Test failed: stage #" + stageNum + ", action # " + actNum + ": " + msgCase + ": " + msgAction + ": after call " + msgFunc +
": state change to NORMAL hasn't been generated");
}
}
public static boolean isActionAllowed_6() {
return (stageNum < 2 );
}
public static void checkActionEvents_6(AWTEvent e) {
System.err.println("+" + e.toString());
if (e.getID() == WindowEvent.WINDOW_STATE_CHANGED) {
eventsCheckPassed = true;
}
}
public static void preAction_7() {
setWindowVisible("before state 'iconified'", "visible");
}
public static void postAction_7() {
System.err.println("Setting iconified");
((Frame)topw).setExtendedState(Frame.ICONIFIED);
if (!waitForStateChange()) {
error("Test failed: stage #" + stageNum + ", action # " + actNum + ": " + msgCase + ": " + msgAction + ": after call " + msgFunc +
": state change to ICONIFIED hasn't been generated");
}
System.err.println("Setting normal");
((Frame)topw).setExtendedState(Frame.NORMAL);
if (!waitForStateChange()) {
error("Test failed: stage #" + stageNum + ", action # " + actNum + ": " + msgCase + ": " + msgAction + ": after call " + msgFunc +
": state change to NORMAL hasn't been generated");
}
}
public static boolean isActionAllowed_7() {
return (stageNum < 2);
}
public static void checkActionEvents_7(AWTEvent e) {
System.err.println(e.toString());
if (e.getID() == WindowEvent.WINDOW_STATE_CHANGED) {
eventsCheckPassed = true;
}
}
public static void preAction_8() {
setWindowVisible("before state 'maximized'", "visible");
}
public static void postAction_8() {
((Frame)topw).setExtendedState(Frame.MAXIMIZED_BOTH);
if (!waitForStateChange()) {
error("Test failed: stage #" + stageNum + ", action # " + actNum + ": " + msgCase + ": " + msgAction + ": after call " + msgFunc +
": state change to MAXIMIZED hasn't been generated");
}
((Frame)topw).setExtendedState(Frame.NORMAL);
if (!waitForStateChange()) {
error("Test failed: stage #" + stageNum + ", action # " + actNum + ": " + msgCase + ": " + msgAction + ": after call " + msgFunc +
": state change to NORMAL hasn't been generated");
}
}
public static boolean isActionAllowed_8() {
return (stageNum < 2);
}
public static void checkActionEvents_8(AWTEvent e) {
System.err.println(e.toString());
if (e.getID() == WindowEvent.WINDOW_STATE_CHANGED) {
eventsCheckPassed = true;
}
}
//***************************************************************************
private static void setWindowVisible(String mAction, String mVisibility) {
msgAction.replace(0, msgAction.length(), mAction);
msgVisibility.replace(0, msgVisibility.length(), mVisibility);
topw.setVisible(true);
pause(100); // Needs for Sawfish
topw.setLocation(X, Y);
waitTillShown(topw);
f.toFront();
pause(300);
}
private static void clickOn(Object src, Window relwin, int x, int y, String errorStr) {
Point p = relwin.getLocationOnScreen();
int counter = 10;
while (--counter > 0) {
eventSrc = src;
msgError.replace(0, msgError.length(), errorStr);
robot.mouseMove(p.x + x, p.y + y);
robot.mousePress(InputEvent.BUTTON1_MASK);
robot.mouseRelease(InputEvent.BUTTON1_MASK);
synchronized (eventSrc) {
if (!dispatchedCond) {
try {
eventSrc.wait(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
if (!dispatchedCond) {
//System.err.println("clickOn: MOUSE_CLICKED event losed, trying to generate it again...");
continue;
}
dispatchedCond = false;
}
break;
} // end while
if (counter <= 0) {
eventSrc = uncheckedSrc;
error("Test: internal error: could't catch MOUSE_CLICKED event. Skip testing this stage");
}
}
private static void setAlwaysOnTop(Window w, boolean value) {
System.err.println("Setting always on top on " + w + " to " + value);
robot.mouseMove(X - 50, Y - 50); // Move out of the window
msgFunc.replace(0, msgCase.length(), "setAlwaysOnTop()");
try {
w.setAlwaysOnTop(value);
} catch (Exception e) {
error("Test failed: stage#" + stageNum + "action #" + actNum + ": " + msgCase + ": " + msgAction +
": setAlwaysOnTop(" + value + ") called at state " + msgVisibility +
" threw exeption " + e);
}
}
private static boolean isAlwaysOnTop(Window w) {
robot.mouseMove(X - 50, Y - 50); // Move out of the window
msgFunc.replace(0, msgCase.length(), "isAlwaysOnTop()");
boolean result = false;
try {
result = w.isAlwaysOnTop();
} catch (Exception e) {
error("Test failed: stage #" + stageNum + ", action # " + actNum + ": " + msgCase + ": " + msgAction +
": isAlwaysOnTop() called at state " + msgVisibility +
" threw exeption " + e);
}
return result;
}
private static void waitTillShown(Component c) {
while (true) {
try {
Thread.sleep(100);
c.getLocationOnScreen();
break;
} catch (InterruptedException e) {
e.printStackTrace();
break;
}
}
}
private static void waitForIdle(boolean doCheck) {
try {
robot.waitForIdle();
EventQueue.invokeAndWait( new Runnable() {
public void run() {} // Dummy implementation
} );
} catch(InterruptedException ite) {
System.err.println("waitForIdle, non-fatal exception caught:");
ite.printStackTrace();
} catch(InvocationTargetException ine) {
System.err.println("waitForIdle, non-fatal exception caught:");
ine.printStackTrace();
}
doCheckEvents = doCheck;
if (doCheck) {
eventsCheckPassed = eventsCheckInitVals[actNum]; // Initialize
} else if (!eventsCheckPassed &&
msgEventsChecks[actNum] != null) {
// Some expected event hasn't been catched,
// so give it one more chance...
doCheckEvents = true;
pause(500);
doCheckEvents = false;
if (!eventsCheckPassed) {
testResult = -1;
error("Test failed: stage #" + stageNum + ", action # " + actNum + ": " + msgCase + ": " + msgAction + ": after call "
+ msgFunc + ": " + msgEventsChecks[actNum]);
}
}
}
private static boolean waitForStateChange() {
System.err.println("------- Waiting for state change");
try {
STATE_SEMA.doWait(3000);
} catch (InterruptedException ie) {
System.err.println("Wait interrupted: " + ie);
}
boolean state = STATE_SEMA.getState();
STATE_SEMA.reset();
robot.delay(1000); // animation normal <--> maximized states
return state;
}
private static void ensureInitialWinPosition(Window w) {
int counter = 30;
while (w.getLocationOnScreen().y != Y && --counter > 0) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
break;
}
}
if (counter <= 0) {
w.setLocation(X, Y);
pause(100);
System.err.println("Test: window set to initial position forcedly");
}
}
private static void pause(int mls) {
try {
Thread.sleep(mls);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
private static void error(String msg) {
errors.add(msg);
System.err.println(msg);
}
}
class Semaphore {
boolean state = false;
int waiting = 0;
public Semaphore() {
}
public synchronized void doWait() throws InterruptedException {
if (state) {
return;
}
waiting++;
wait();
waiting--;
}
public synchronized void doWait(int timeout) throws InterruptedException {
if (state) {
return;
}
waiting++;
wait(timeout);
waiting--;
}
public synchronized void raise() {
state = true;
if (waiting > 0) {
notifyAll();
}
}
public synchronized void doNotify() {
notifyAll();
}
public synchronized boolean getState() {
return state;
}
public synchronized void reset() {
state = false;
}
}