1 /*
   2  * Copyright (c) 2011, 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 
  27 package sun.lwawt;
  28 
  29 import java.awt.Dimension;
  30 import java.awt.Point;
  31 import java.awt.TextField;
  32 import java.awt.event.ActionEvent;
  33 import java.awt.event.ActionListener;
  34 import java.awt.event.FocusEvent;
  35 import java.awt.peer.TextFieldPeer;
  36 
  37 import javax.swing.JPasswordField;
  38 import javax.swing.text.JTextComponent;
  39 
  40 import javax.tools.annotation.GenerateNativeHeader;
  41 
  42 /* No native methods here, but the constants are needed in the supporting JNI code */
  43 @GenerateNativeHeader
  44 final class LWTextFieldPeer
  45         extends LWTextComponentPeer<TextField, JPasswordField>
  46         implements TextFieldPeer, ActionListener {
  47 
  48     private static final int DEFAULT_COLUMNS = 1;
  49 
  50     LWTextFieldPeer(final TextField target,
  51                     final PlatformComponent platformComponent) {
  52         super(target, platformComponent);
  53     }
  54 
  55     @Override
  56     protected JPasswordField createDelegate() {
  57         return new JTextAreaDelegate();
  58     }
  59 
  60     @Override
  61     void initializeImpl() {
  62         super.initializeImpl();
  63         setEchoChar(getTarget().getEchoChar());
  64         synchronized (getDelegateLock()) {
  65             getDelegate().addActionListener(this);
  66         }
  67     }
  68 
  69     @Override
  70     public JTextComponent getTextComponent() {
  71         return getDelegate();
  72     }
  73 
  74     @Override
  75     public void setEchoChar(final char echoChar) {
  76         synchronized (getDelegateLock()) {
  77             getDelegate().setEchoChar(echoChar);
  78             getDelegate().putClientProperty("JPasswordField.cutCopyAllowed",
  79                                             getDelegate().echoCharIsSet()
  80                                             ? Boolean.FALSE : Boolean.TRUE);
  81         }
  82     }
  83 
  84     @Override
  85     public Dimension getPreferredSize(final int columns) {
  86         return getPreferredSize(1, columns);
  87     }
  88 
  89     @Override
  90     public Dimension getMinimumSize(final int columns) {
  91         return getPreferredSize(columns);
  92     }
  93 
  94     @Override
  95     public Dimension getMinimumSize() {
  96         return getMinimumSize(DEFAULT_COLUMNS);
  97     }
  98 
  99     @Override
 100     public void actionPerformed(final ActionEvent e) {
 101         postEvent(new ActionEvent(getTarget(), ActionEvent.ACTION_PERFORMED,
 102                 getText(), e.getWhen(), e.getModifiers()));
 103     }
 104 
 105     /**
 106      * Restoring native behavior. We should sets the selection range to zero,
 107      * when component lost its focus.
 108      *
 109      * @param e the focus event
 110      */
 111     @Override
 112     protected void handleJavaFocusEvent(final FocusEvent e) {
 113         if (e.getID() == FocusEvent.FOCUS_LOST) {
 114             // In order to de-select the selection
 115             setCaretPosition(0);
 116         }
 117         super.handleJavaFocusEvent(e);
 118     }
 119 
 120     private final class JTextAreaDelegate extends JPasswordField {
 121 
 122         // Empty non private constructor was added because access to this
 123         // class shouldn't be emulated by a synthetic accessor method.
 124         JTextAreaDelegate() {
 125             super();
 126         }
 127 
 128         @Override
 129         public void replaceSelection(String content) {
 130             getDocument().removeDocumentListener(LWTextFieldPeer.this);
 131             super.replaceSelection(content);
 132             // post only one text event in this case
 133             postTextEvent();
 134             getDocument().addDocumentListener(LWTextFieldPeer.this);
 135         }
 136 
 137         @Override
 138         public boolean hasFocus() {
 139             return getTarget().hasFocus();
 140         }
 141 
 142         @Override
 143         public Point getLocationOnScreen() {
 144             return LWTextFieldPeer.this.getLocationOnScreen();
 145         }
 146     }
 147 }