1 /*
   2  * Copyright (c) 2011, 2012, 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.*;
  38 import javax.swing.text.JTextComponent;
  39 
  40 final class LWTextFieldPeer
  41         extends LWTextComponentPeer<TextField, JPasswordField>
  42         implements TextFieldPeer, ActionListener {
  43 
  44     LWTextFieldPeer(final TextField target,
  45                     final PlatformComponent platformComponent) {
  46         super(target, platformComponent);
  47     }
  48 
  49     @Override
  50     protected JPasswordField createDelegate() {
  51         return new JPasswordFieldDelegate();
  52     }
  53 
  54     @Override
  55     void initializeImpl() {
  56         super.initializeImpl();
  57         setEchoChar(getTarget().getEchoChar());
  58         synchronized (getDelegateLock()) {
  59             getDelegate().addActionListener(this);
  60         }
  61     }
  62 
  63     @Override
  64     public JTextComponent getTextComponent() {
  65         return getDelegate();
  66     }
  67 
  68     @Override
  69     public void setEchoChar(final char echoChar) {
  70         synchronized (getDelegateLock()) {
  71             getDelegate().setEchoChar(echoChar);
  72             final boolean cutCopyAllowed;
  73             final String focusInputMapKey;
  74             if (echoChar != 0) {
  75                 cutCopyAllowed = false;
  76                 focusInputMapKey = "PasswordField.focusInputMap";
  77             } else {
  78                 cutCopyAllowed = true;
  79                 focusInputMapKey = "TextField.focusInputMap";
  80             }
  81             getDelegate().putClientProperty("JPasswordField.cutCopyAllowed", cutCopyAllowed);
  82             InputMap inputMap = (InputMap) UIManager.get(focusInputMapKey);
  83             SwingUtilities.replaceUIInputMap(getDelegate(), JComponent.WHEN_FOCUSED, inputMap);
  84         }
  85     }
  86 
  87     @Override
  88     public Dimension getPreferredSize(final int columns) {
  89         return getMinimumSize(columns);
  90     }
  91 
  92     @Override
  93     public Dimension getMinimumSize(final int columns) {
  94         return getMinimumSize(1, columns);
  95     }
  96 
  97     @Override
  98     public void actionPerformed(final ActionEvent e) {
  99         postEvent(new ActionEvent(getTarget(), ActionEvent.ACTION_PERFORMED,
 100                 getText(), e.getWhen(), e.getModifiers()));
 101     }
 102 
 103     /**
 104      * Restoring native behavior. We should sets the selection range to zero,
 105      * when component lost its focus.
 106      *
 107      * @param e the focus event
 108      */
 109     @Override
 110     protected void handleJavaFocusEvent(final FocusEvent e) {
 111         if (e.getID() == FocusEvent.FOCUS_LOST) {
 112             // In order to de-select the selection
 113             setCaretPosition(0);
 114         }
 115         super.handleJavaFocusEvent(e);
 116     }
 117 
 118     private final class JPasswordFieldDelegate extends JPasswordField {
 119 
 120         // Empty non private constructor was added because access to this
 121         // class shouldn't be emulated by a synthetic accessor method.
 122         JPasswordFieldDelegate() {
 123             super();
 124         }
 125 
 126         @Override
 127         public void replaceSelection(String content) {
 128             getDocument().removeDocumentListener(LWTextFieldPeer.this);
 129             super.replaceSelection(content);
 130             // post only one text event in this case
 131             postTextEvent();
 132             getDocument().addDocumentListener(LWTextFieldPeer.this);
 133         }
 134 
 135         @Override
 136         public boolean hasFocus() {
 137             return getTarget().hasFocus();
 138         }
 139 
 140         @Override
 141         public Point getLocationOnScreen() {
 142             return LWTextFieldPeer.this.getLocationOnScreen();
 143         }
 144     }
 145 }