1 /*

     2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package jdk.nashorn.tools.jjs;

    27 

    28 import java.awt.BorderLayout;

    29 import java.awt.FlowLayout;

    30 import java.awt.event.KeyEvent;

    31 import java.awt.event.WindowAdapter;

    32 import java.awt.event.WindowEvent;

    33 import java.util.function.Consumer;

    34 import javax.swing.JButton;

    35 import javax.swing.JFrame;

    36 import javax.swing.JPanel;

    37 import javax.swing.JScrollPane;

    38 import javax.swing.JTextArea;

    39 import javax.swing.SwingUtilities;

    40 

    41 /**

    42  * A minimal Swing editor as a fallback when the user does not specify an

    43  * external editor.

    44  */

    45 final class EditPad extends JFrame implements Runnable {

    46     private static final long serialVersionUID = 1;

    47     private final Consumer<String> errorHandler;

    48     private final String initialText;

    49     private final boolean[] closeLock;

    50     private final Consumer<String> saveHandler;

    51 

    52     EditPad(final Consumer<String> errorHandler, final String initialText,

    53             final boolean[] closeLock, final Consumer<String> saveHandler) {

    54         super("Edit Pad (Experimental)");

    55         this.errorHandler = errorHandler;

    56         this.initialText = initialText;

    57         this.closeLock = closeLock;

    58         this.saveHandler = saveHandler;

    59     }

    60 

    61     @Override

    62     public void run() {

    63         addWindowListener(new WindowAdapter() {

    64             @Override

    65             public void windowClosing(final WindowEvent e) {

    66                 EditPad.this.dispose();

    67                 notifyClose();

    68             }

    69         });

    70         setLocationRelativeTo(null);

    71         setLayout(new BorderLayout());

    72         JTextArea textArea = new JTextArea(initialText);

    73         add(new JScrollPane(textArea), BorderLayout.CENTER);

    74         add(buttons(textArea), BorderLayout.SOUTH);

    75 

    76         setSize(800, 600);

    77         setVisible(true);

    78     }

    79 

    80     private JPanel buttons(final JTextArea textArea) {

    81         FlowLayout flow = new FlowLayout();

    82         flow.setHgap(35);

    83         JPanel buttons = new JPanel(flow);

    84         JButton cancel = new JButton("Cancel");

    85         cancel.setMnemonic(KeyEvent.VK_C);

    86         JButton accept = new JButton("Accept");

    87         accept.setMnemonic(KeyEvent.VK_A);

    88         JButton exit = new JButton("Exit");

    89         exit.setMnemonic(KeyEvent.VK_X);

    90         buttons.add(cancel);

    91         buttons.add(accept);

    92         buttons.add(exit);

    93 

    94         cancel.addActionListener(e -> {

    95             close();

    96         });

    97         accept.addActionListener(e -> {

    98             saveHandler.accept(textArea.getText());

    99         });

   100         exit.addActionListener(e -> {

   101             saveHandler.accept(textArea.getText());

   102             close();

   103         });

   104 

   105         return buttons;

   106     }

   107 

   108     private void close() {

   109         setVisible(false);

   110         dispose();

   111         notifyClose();

   112     }

   113 

   114     private void notifyClose() {

   115         synchronized (closeLock) {

   116             closeLock[0] = true;

   117             closeLock.notify();

   118         }

   119     }

   120 

   121     static void edit(final Consumer<String> errorHandler, final String initialText,

   122             final Consumer<String> saveHandler) {

   123         boolean[] closeLock = new boolean[1];

   124         SwingUtilities.invokeLater(

   125                 new EditPad(errorHandler, initialText, closeLock, saveHandler));

   126         synchronized (closeLock) {

   127             while (!closeLock[0]) {

   128                 try {

   129                     closeLock.wait();

   130                 } catch (final InterruptedException ex) {

   131                     // ignore and loop

   132                 }

   133             }

   134         }

   135     }

   136 }