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Java example source code file (NoEventsTest.java)

This example Java source code file (NoEventsTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

awt, button, checkbox, choice, def_height, dimension, event, frame, globallistener, label, noeventstest, robot, testdialog, testpanel, testwindow, util, window

The NoEventsTest.java Java example source code

/*
 * Copyright (c) 2008, 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
  @bug 4452384
  @summary Tests that non-focusable windows doesn't generate any focus events when accessed.
  @author Denis.Mikhalkin: area=awt.focus
  @run main NoEventsTest
*/

import java.awt.*;
import java.awt.event.*;
import java.util.*;

public class NoEventsTest extends Frame {
    public static final int DEF_WIDTH = 400,
        DEF_HEIGHT = 300,
        DEF_TOP = 1,
        DEF_LEFT = 100,
        DEF_ROW = 0,
        DEF_COL = 0;
    static boolean automatic = true;
    static Window[] windows;
    static Frame main_frame, jumpingFrame;
    static Button focus_button;
    static Robot robot;
    static void pause(int timeout) {
        Toolkit.getDefaultToolkit().sync();
        robot.waitForIdle();
        robot.delay(100);
    }
    static GlobalListener listener;
    public static void main(String[] args) {

        listener = new GlobalListener();
        Toolkit.getDefaultToolkit().addAWTEventListener(listener,
                                                        AWTEvent.FOCUS_EVENT_MASK |
                                                        AWTEvent.WINDOW_EVENT_MASK);
        try{
            robot = new Robot();
        } catch(Exception e) {}
        // Create several pairs - focusable Frame with focusable component(button) and non-focusable:
        // window, resizable frame, non-resizable frame, dialog, non-resiable dialog
        main_frame = new Frame("focusable frame");
        focus_button = new Button("button to focus");
        main_frame.add(focus_button);
        main_frame.pack();
        main_frame.setVisible(true);
        main_frame.setLocation(10, 600);
        main_frame.addWindowListener(new WindowAdapter() {
                public void windowClosing(WindowEvent e) {
                    listener.report();
                    System.exit(0);
                }
            });

        jumpingFrame = new Frame("Jumping frame");
        jumpingFrame.setBounds(DEF_LEFT, DEF_TOP, DEF_WIDTH, DEF_HEIGHT);

        windows = new Window[7];
        windows[0] = new TestWindow(0, 0, false, main_frame);
        //windows[1] = new TestWindow(2, 1, true, main_frame);
        windows[2] = new NoEventsTest(1, 0, false, true);
        windows[3] = new NoEventsTest(2, 0, false, false);
        //windows[4] = new Test(3, 0, true, true);
        windows[5] = new TestDialog(0, 1, false, true, main_frame);
        windows[6] = new TestDialog(1, 1, false, false, main_frame);
        if (!automatic) {
            int windowInd;
            for (windowInd = 0; windowInd < windows.length; windowInd++) {
                if (windows[windowInd] != null) {
                    windows[windowInd].setVisible(true);
                }
            }
        }
        // Run the test
        // 1. Click on all controls, check for no focus events for non-focusable, right focus events for focusable
        // 2. Perform some action with control, check if it works
        if (automatic) {
            int windowInd;
            for (windowInd = 0; windowInd < windows.length; windowInd++) {
                if (windows[windowInd] != null) {
                    windows[windowInd].setVisible(true);
                    focus_button.requestFocus();
                    pause(1000);

                    // Verify that click on non-focusable window causes no focus lost on active window
                    performFocusClick(windows[windowInd]);
                    focus_button.requestFocus();
                    pause(500);
                    performActionClick(windows[windowInd]);

                    // Verify that toFront, toBack doesn't cause non-focusable window to become active
                    jumpingFrame.setVisible(true);
                    pause(1000);
                      jumpingFrame.toBack();
                      pause(500);
                      jumpingFrame.toFront();
                      pause(500);
                      windows[windowInd].toBack();
                      pause(500);
                      windows[windowInd].toFront();
                      pause(500);

                    // Verify that iconifiyng/deiconfiying and
                    // zooming/unzooming doesn't cause non-focusable
                    // window to become active
                    if (windows[windowInd] instanceof Frame) {
                        Frame toTest = (Frame)windows[windowInd];
                        // Deiconification currently doesn't work!
//                        toTest.setExtendedState(Frame.ICONIFIED);
//                        pause(500);
//                        toTest.setExtendedState(Frame.NORMAL);
                        pause(500);
                        toTest.setExtendedState(Frame.MAXIMIZED_BOTH);
                        pause(500);
                        toTest.setExtendedState(Frame.NORMAL);
                    }

                    windows[windowInd].dispose();
                    jumpingFrame.dispose();
                }
            }
            pause(1000);
            System.err.println("Test finished.");
            if (!listener.report()) {
                throw new RuntimeException("Test Failed. See error stream output for details");
            }
        }
    }
    static void performFocusClick(Window parent) {
        if (parent == null) {
            return;
        }
        for (int compInd = 0; compInd < parent.getComponentCount(); compInd++) {
            Component child = parent.getComponent(compInd);
            if (child instanceof TestPanel) {
                TestPanel pan = (TestPanel)child;
                pan.performFocusClicks(robot);
                pause(100);
            }
        }
    }
    static void performActionClick(Window parent) {
        if (parent == null) {
            return;
        }
        for (int compInd = 0; compInd < parent.getComponentCount(); compInd++) {
            Component child = parent.getComponent(compInd);
            if (child instanceof TestPanel) {
                TestPanel pan = (TestPanel)child;
                pan.performActionClicks(robot);
                pause(100);
            }
        }
    }
    public NoEventsTest(int row, int col, boolean focusable, boolean resizable) {
        super("Frame" + row + "" + col);
        TestPanel panel = new TestPanel(row, col);
        if (NoEventsTest.automatic) {
            row = NoEventsTest.DEF_ROW;
            col = NoEventsTest.DEF_COL;
        }
        setName(getTitle());
        add("Center", panel);
        Label l = new Label(getClass().getSuperclass().getName() + ", " + (focusable?"focusable":"non-focusable") +
                            ", " + (resizable?"resizable":"non-resizable"));
        l.setBackground(Color.green);
        add("North", l);
        setBounds(NoEventsTest.DEF_LEFT + DEF_WIDTH*col, DEF_TOP + DEF_HEIGHT*row, DEF_WIDTH, DEF_HEIGHT);
        if (!focusable) {
            setFocusableWindowState(false);
        }
        if (!resizable) {
            setResizable(false);
        }
//        setVisible(true);
    }
}
class TestWindow extends Window {
    public TestWindow(int row, int col, boolean focusable, Frame owner) {
        super(owner);
        setName("Window" + row + "" + col);
        TestPanel panel = new TestPanel(row, col);
        if (NoEventsTest.automatic) {
            row = NoEventsTest.DEF_ROW;
            col = NoEventsTest.DEF_COL;
        }

        add("Center", panel);
        Label l = new Label(getClass().getSuperclass().getName() + ", " + (focusable?"focusable":"non-focusable") +
                            ", " + (false?"resizable":"non-resizable"));
        l.setBackground(Color.green);
        add("North", l);

        setBounds(NoEventsTest.DEF_LEFT + NoEventsTest.DEF_WIDTH*col, NoEventsTest.DEF_TOP + NoEventsTest.DEF_HEIGHT*row, NoEventsTest.DEF_WIDTH, NoEventsTest.DEF_HEIGHT);
        if (!focusable) {
            setFocusableWindowState(false);
        }
//        setVisible(true);
    }
}
class TestDialog extends Dialog {
    public TestDialog(int row, int col, boolean focusable, boolean resizable, Frame owner) {
        super(owner);
        setName("Dialog" + row + "" + col);
        TestPanel panel = new TestPanel(row, col);
        if (NoEventsTest.automatic) {
            row = NoEventsTest.DEF_ROW;
            col = NoEventsTest.DEF_COL;
        }

        add("Center", panel);
        Label l = new Label(getClass().getSuperclass().getName() + ", " + (focusable?"focusable":"non-focusable") +
                            ", " + (resizable?"resizable":"non-resizable"));
        l.setBackground(Color.green);
        add("North", l);

        setBounds(NoEventsTest.DEF_LEFT + NoEventsTest.DEF_WIDTH*col, NoEventsTest.DEF_TOP + NoEventsTest.DEF_HEIGHT*row, NoEventsTest.DEF_WIDTH, NoEventsTest.DEF_HEIGHT);
        if (!focusable) {
            setFocusableWindowState(false);
        }
        if (!resizable) {
            setResizable(false);
        }
//        setVisible(true);
    }
}

class TestPanel extends Panel {

    void clickComponent(Component comp, Robot robot) {
        if (comp instanceof Choice) {
            return;
        }
        Point compLoc = comp.getLocationOnScreen();
        Dimension size = comp.getSize();
        robot.mouseMove(compLoc.x + size.width/2, compLoc.y + size.height/2);
        robot.mousePress(InputEvent.BUTTON1_MASK);
        robot.mouseRelease(InputEvent.BUTTON1_MASK);
    }
    void performFocusClicks(Robot robot) {
        for (int childInd = 0; childInd < getComponentCount(); childInd++) {
            performFocusClick(getComponent(childInd), robot);
        }
    }
    void performFocusClick(Component comp, Robot robot) {
        clickComponent(comp, robot);
    }

    void performActionClicks(Robot robot) {
        for (int childInd = 0; childInd < getComponentCount(); childInd++) {
            performActionClick(getComponent(childInd), robot);
        }
    }
    void performActionClick(Component comp, Robot robot) {
    }

    public TestPanel(int row, int col) {
        setLayout(new FlowLayout());
        Button b;
        add(b = new Button("press"+ row + "" + col));
        b.setName(b.getLabel());
//         b.addMouseListener(new MouseAdapter() {
//                 public void mousePressed(MouseEvent e) {
//                     System.err.println(e);
//                 }
//             });
        TextField t;
        add(t = new TextField("text" + row + "" + col));
        t.setName(t.getText());

        java.awt.List list = new java.awt.List();
        add(list);
        list.setName("list");
        list.add("one");
        list.add("two");
        list.add("three");
        list.setMultipleMode(true);
        list.setName("list" + row + "" + col);

        Checkbox check = new Checkbox("checker");
        add(check);
        check.setName("check" + row + "" + col);

        Choice choice = new Choice();
        choice.add("one");
        choice.add("two");
        choice.add("three");
        add(choice);
        choice.setName("choice" + row + "" + col);

        Canvas can = new Canvas() {
                public Dimension getPreferredSize() {
                    return new Dimension(10, 10);
                }
            };
        can.setBackground(Color.blue);
        add(can);
        can.setName("canvas" + row + "" + col);

        TextArea ta = new TextArea("text\ntttt\naaaa\nwwwww\nqqqqqq\neeeeee\nrrrrrr\nyyyyyy\nuuuuu", 3, 5);
        add(ta);
        ta.setName("textarea" + row + "" + col);

        Scrollbar bar = new Scrollbar(Scrollbar.HORIZONTAL);
        add(bar);
        bar.setName("scrollbar" + row + "" + col);

        CheckboxGroup group = new CheckboxGroup();
        Checkbox ch1 = new Checkbox("one", group, true);
        Checkbox ch2 = new Checkbox("two", group, false);
        add(ch1);
        add(ch2);
        ch1.setName("checkbox1 " + row + "" + col);
        ch2.setName("checkbox2 " + row + "" + col);


        ScrollPane pane = new ScrollPane(ScrollPane.SCROLLBARS_ALWAYS);
        add(pane);
        Button bigButton = new Button("abc") {
                public Dimension getPreferredSize() {
                    return new Dimension(100, 100);
                }
            };
        pane.add(bigButton);
        bigButton.setName("bigbutton" + row + "" + col);
    }
}

class GlobalListener implements AWTEventListener {
    java.util.List errors = new java.util.LinkedList();
    public boolean report() {
        if (errors.size() != 0) {
            System.err.println("Test FAILED");
        } else {
            System.err.println("Test PASSED");
            return true;
        }
        ListIterator iter = errors.listIterator();
        while (iter.hasNext()) {
            System.err.println(iter.next());
        }
        return false;
    }
    public GlobalListener() {
    }
    Window getWindowParent(Component comp) {
        while (comp != null && !(comp instanceof Window)) {
            comp = comp.getParent();
        }
        return (Window)comp;
    }
    void reportError(AWTEvent e, String message) {
        String error = "ERROR: " + message + " : " + e;
        errors.add(error);
        System.err.println(error);
    }
    public void eventDispatched(AWTEvent e) {
        Component comp = (Component)e.getSource();
        Window parent = getWindowParent(comp);
        if (!(e instanceof WindowEvent || e instanceof FocusEvent)) {
            System.err.println("Strange event " + e);
        }

        // Skip WINDOW_OPENED
        if (e.getID() == WindowEvent.WINDOW_CLOSING) {
            System.err.println(e);
        }
        switch (e.getID()) {
          case WindowEvent.WINDOW_OPENED:
          case WindowEvent.WINDOW_CLOSING:
          case WindowEvent.WINDOW_CLOSED:
          case WindowEvent.WINDOW_ICONIFIED:
          case WindowEvent.WINDOW_DEICONIFIED:
          case WindowEvent.WINDOW_STATE_CHANGED:
            return;
          case WindowEvent.WINDOW_LOST_FOCUS: {
              WindowEvent we = (WindowEvent)e;
              if (we.getOppositeWindow() != null && !we.getOppositeWindow().getFocusableWindowState()) {
                  reportError(e, "frame lost focus because of non-focusable window");
              }
              break;
          }
        }
        // Check that Window owner is focusable
        if (!parent.getFocusableWindowState()) {
            reportError(e, "focus event for component in non-focusable window " + parent.getName());
        }
        if (!comp.isFocusable()) {
            reportError(e, "focus event for non-focusable component");
        }
//         if (e instanceof WindowEvent || e instanceof FocusEvent) {
// //             System.err.println(e);
//         }
    }
}

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