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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/javax/swing/JPasswordField.java
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+/* JPasswordField.java --
+ Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package javax.swing;
+
+import java.io.IOException;
+import java.io.ObjectOutputStream;
+
+import javax.accessibility.AccessibleContext;
+import javax.accessibility.AccessibleRole;
+import javax.swing.text.BadLocationException;
+import javax.swing.text.Document;
+
+/**
+ * class JPasswordField
+ *
+ * @author Andrew Selkirk
+ * @author Lillian Angel
+ * @version 1.0
+ */
+public class JPasswordField extends JTextField
+{
+ /**
+ * AccessibleJPasswordField
+ */
+ protected class AccessibleJPasswordField extends AccessibleJTextField
+ {
+ private static final long serialVersionUID = -8477039424200681086L;
+
+ /**
+ * Constructor AccessibleJPasswordField
+ */
+ protected AccessibleJPasswordField()
+ {
+ // Nothing to do here.
+ }
+
+ /**
+ * getAccessibleRole
+ *
+ * @return AccessibleRole
+ */
+ public AccessibleRole getAccessibleRole()
+ {
+ return AccessibleRole.PASSWORD_TEXT;
+ }
+ }
+
+ /**
+ * echoChar. Default is 0.
+ */
+ private char echoChar = 0;
+
+ /**
+ * Creates a <code>JPasswordField</code> object.
+ */
+ public JPasswordField()
+ {
+ this(null, null, 0);
+ }
+
+ /**
+ * Creates a <code>JPasswordField</code> object.
+ *
+ * @param text the initial text
+ */
+ public JPasswordField(String text)
+ {
+ this(null, text, 0);
+ }
+
+ /**
+ * Creates a <code>JPasswordField</code> object.
+ *
+ * @param columns the number of columns
+ */
+ public JPasswordField(int columns)
+ {
+ this(null, null, columns);
+ }
+
+ /**
+ * Creates a <code>JPasswordField</code> object.
+ *
+ * @param text the initial text
+ * @param columns the number of columns
+ */
+ public JPasswordField(String text, int columns)
+ {
+ this(null, text, columns);
+ }
+
+ /**
+ * Creates a <code>JPasswordField</code> object.
+ *
+ * @param document the document to use
+ * @param text the initial text
+ * @param columns the number of columns
+ */
+ public JPasswordField(Document document, String text, int columns)
+ {
+ super(document, text, columns);
+ }
+
+ /**
+ * writeObject
+ *
+ * @param stream the stream to write to
+ *
+ * @exception IOException if an error occurs
+ */
+ private void writeObject(ObjectOutputStream stream) throws IOException
+ {
+ // TODO: Implement me.
+ }
+
+ /**
+ * Returns the <code>UIClassID</code>
+ *
+ * @return the string "PasswordFieldUI"
+ */
+ public String getUIClassID()
+ {
+ return "PasswordFieldUI";
+ }
+
+ /**
+ * getEchoChar
+ *
+ * @return the echo char
+ */
+ public char getEchoChar()
+ {
+ return echoChar;
+ }
+
+ /**
+ * setEchoChar
+ *
+ * @param echo the echo char
+ */
+ public void setEchoChar(char echo)
+ {
+ this.echoChar = echo;
+ }
+
+ /**
+ * Returns true if this JPasswordField has a character set for echoing.
+ * A character is considered to be set if the echo character is not 0.
+ *
+ * @return <code>true</code> if the echo char is set,
+ * <code>false</code> otherwise.
+ */
+ public boolean echoCharIsSet()
+ {
+ return echoChar != 0;
+ }
+
+ /**
+ * Copies the selected text into the clipboard. This operation is not
+ * allowed in a password input field.
+ */
+ public void copy()
+ {
+ UIManager.getLookAndFeel().provideErrorFeedback(this);
+ }
+
+ /**
+ * Cuts the selected text and puts it into the clipboard. This operation
+ * is not allowed in a password input field.
+ */
+ public void cut()
+ {
+ UIManager.getLookAndFeel().provideErrorFeedback(this);
+ }
+
+ /**
+ * Returns the text contained in this TextComponent. If the
+ * underlying document is null, will give a NullPointerException.
+ *
+ * @return String
+ *
+ * @deprecated
+ */
+ public String getText()
+ {
+ try
+ {
+ return getDocument().getText(0, getDocument().getLength());
+ }
+ catch (BadLocationException ble)
+ {
+ // This should never happen.
+ throw new AssertionError(ble);
+ }
+ }
+
+ /**
+ * Fetches a portion of the text represented by the component.
+ * Returns an empty string if length is 0. If the
+ * underlying document is null, will give a NullPointerException.
+ *
+ * @param offset TODO
+ * @param length TODO
+ *
+ * @return String
+ *
+ * @exception BadLocationException TODO
+ *
+ * @deprecated
+ */
+ public String getText(int offset, int length) throws BadLocationException
+ {
+ return getDocument().getText(offset, length);
+ }
+
+ /**
+ * Returns the text contained in this TextComponent. If the underlying
+ * document is null, will give a NullPointerException.
+ * For stronger security, it is recommended that the returned character
+ * array be cleared after use by setting each character to zero.
+ *
+ * @return char[]
+ */
+ public char[] getPassword()
+ {
+ return getText().toCharArray();
+ }
+
+ /**
+ * Returns a string representation of this JPasswordField. This method is
+ * intended to be used only for debugging purposes,
+ * and the content and format of the returned string may vary between
+ * implementations. The returned string may be empty but may not be null.
+ *
+ * @return String
+ */
+ protected String paramString()
+ {
+ try
+ {
+ return getText();
+ }
+ catch (NullPointerException npe)
+ {
+ return "";
+ }
+ }
+
+ /**
+ * getAccessibleContext
+ *
+ * @return the <code>AccessibleContext</code> object
+ */
+ public AccessibleContext getAccessibleContext()
+ {
+ if (accessibleContext == null)
+ accessibleContext = new AccessibleJPasswordField();
+
+ return accessibleContext;
+ }
+}