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-/* TextField.java -- A one line text entry field
- Copyright (C) 1999, 2002, 2004, 2006, 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 java.awt;
-
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
-import java.awt.peer.ComponentPeer;
-import java.awt.peer.TextFieldPeer;
-import java.util.EventListener;
-
-import javax.accessibility.AccessibleContext;
-import javax.accessibility.AccessibleStateSet;
-
-/**
- * This class implements a single line text entry field widget
- *
- * @author Aaron M. Renn (arenn@urbanophile.com)
- */
-public class TextField extends TextComponent
-{
-
- /**
- * The number used to generate the name returned by getName.
- */
- private static transient long next_textfield_number;
-
-
- private static final long serialVersionUID = -2966288784432217853L;
-
-
- /**
- * @serial The number of columns in the text entry field.
- */
- private int columns;
-
- /**
- * @serial The character that is echoed when doing protected input
- */
- private char echoChar;
-
- // List of registered ActionListener's for this object.
- private ActionListener action_listeners;
-
- /**
- * Initializes a new instance of <code>TextField</code> that is empty
- * and has one column.
- *
- * @exception HeadlessException If GraphicsEnvironment.isHeadless() is true,
- */
- public TextField()
- {
- this("", 0);
- }
-
- /**
- * Initializes a new instance of <code>TextField</code> containing
- * the specified text. The number of columns will be equal to the
- * length of the text string.
- *
- * @param text The text to display in the field.
- *
- * @exception HeadlessException If GraphicsEnvironment.isHeadless() is true,
- */
- public TextField(String text)
- {
- this(text, (text == null) ? 0 : text.length());
- }
-
- /**
- * Initializes a new instance of <code>TextField</code> that is empty
- * and has the specified number of columns.
- *
- * @param columns The number of columns in the text field.
- *
- * @exception HeadlessException If GraphicsEnvironment.isHeadless() is true,
- */
- public TextField(int columns)
- {
- this("", columns);
- }
-
- /**
- * Initializes a new instance of <code>TextField</code> with the
- * specified text and number of columns.
- *
- * @param text The text to display in the field.
- * @param columns The number of columns in the field.
- *
- * @exception HeadlessException If GraphicsEnvironment.isHeadless() is true,
- */
- public TextField(String text, int columns)
- {
- super(text);
-
- if (columns < 0)
- this.columns = 0;
- else
- this.columns = columns;
-
- if (GraphicsEnvironment.isHeadless())
- throw new HeadlessException ();
- }
-
- /**
- * Returns the number of columns in the field.
- *
- * @return The number of columns in the field.
- */
- public int getColumns()
- {
- return(columns);
- }
-
- /**
- * Sets the number of columns in this field to the specified value.
- *
- * @param columns The new number of columns in the field.
- *
- * @exception IllegalArgumentException If columns is less than zero.
- */
- public synchronized void setColumns(int columns)
- {
- if (columns < 0)
- throw new IllegalArgumentException("Value is less than zero: " +
- columns);
-
- this.columns = columns;
- // FIXME: How to we communicate this to our peer?
- }
-
- /**
- * Returns the character that is echoed to the screen when a text
- * field is protected (such as when a password is being entered).
- *
- * @return The echo character for this text field.
- */
- public char getEchoChar()
- {
- return(echoChar);
- }
-
- /**
- * Sets the character that is echoed when protected input such as
- * a password is displayed.
- *
- * @param echoChar The new echo character.
- */
- public void setEchoChar(char echoChar)
- {
- setEchoCharacter(echoChar);
- }
-
- /**
- * Sets the character that is echoed when protected input such as
- * a password is displayed.
- *
- * @param echoChar The new echo character.
- *
- * @deprecated This method is deprecated in favor of
- * <code>setEchoChar()</code>
- */
- public void setEchoCharacter(char echoChar)
- {
- this.echoChar = echoChar;
-
- TextFieldPeer peer = (TextFieldPeer) getPeer ();
- if (peer != null)
- peer.setEchoChar (echoChar);
- }
-
- /**
- * Tests whether or not this text field has an echo character set
- * so that characters the user type are not echoed to the screen.
- *
- * @return <code>true</code> if an echo character is set,
- * <code>false</code> otherwise.
- */
- public boolean echoCharIsSet()
- {
- if (echoChar == '\u0000')
- return(false);
- else
- return(true);
- }
-
- /**
- * Returns the minimum size for this text field.
- *
- * @return The minimum size for this text field.
- */
- public Dimension getMinimumSize()
- {
- return getMinimumSize (getColumns ());
- }
-
- /**
- * Returns the minimum size of a text field with the specified number
- * of columns.
- *
- * @param columns The number of columns to get the minimum size for.
- */
- public Dimension getMinimumSize(int columns)
- {
- return minimumSize(columns);
- }
-
- /**
- * Returns the minimum size for this text field.
- *
- * @return The minimum size for this text field.
- *
- * @deprecated This method is deprecated in favor of
- * <code>getMinimumSize()</code>.
- */
- public Dimension minimumSize()
- {
- return minimumSize(getColumns ());
- }
-
- /**
- * Returns the minimum size of a text field with the specified number
- * of columns.
- *
- * @param columns The number of columns to get the minimum size for.
- *
- * @deprecated This method is deprecated in favor of
- * <code>getMinimumSize(int)</code>.
- */
- public Dimension minimumSize(int columns)
- {
- if (isMinimumSizeSet())
- return new Dimension(minSize);
-
- TextFieldPeer peer = (TextFieldPeer) getPeer ();
- if (peer == null)
- return new Dimension(getWidth(), getHeight());
-
- return peer.getMinimumSize (columns);
- }
-
- /**
- * Returns the preferred size for this text field.
- *
- * @return The preferred size for this text field.
- */
- public Dimension getPreferredSize()
- {
- return getPreferredSize(getColumns ());
- }
-
- /**
- * Returns the preferred size of a text field with the specified number
- * of columns.
- *
- * @param columns The number of columns to get the preferred size for.
- */
- public Dimension getPreferredSize(int columns)
- {
- return preferredSize(columns);
- }
-
- /**
- * Returns the preferred size for this text field.
- *
- * @return The preferred size for this text field.
- *
- * @deprecated This method is deprecated in favor of
- * <code>getPreferredSize()</code>.
- */
- public Dimension preferredSize()
- {
- return preferredSize(getColumns ());
- }
-
- /**
- * Returns the preferred size of a text field with the specified number
- * of columns.
- *
- * @param columns The number of columns to get the preferred size for.
- *
- * @deprecated This method is deprecated in favor of
- * <code>getPreferredSize(int)</code>.
- */
- public Dimension preferredSize(int columns)
- {
- if (isPreferredSizeSet())
- return new Dimension(prefSize);
-
- TextFieldPeer peer = (TextFieldPeer) getPeer ();
- if (peer == null)
- return new Dimension (getWidth(), getHeight());
-
- return peer.getPreferredSize (columns);
- }
-
- /**
- * Notifies this object that it should create its native peer.
- */
- public void addNotify()
- {
- if (getPeer() != null)
- return;
-
- setPeer((ComponentPeer)getToolkit().createTextField(this));
- super.addNotify();
- }
-
- /**
- * Addes a new listener to the list of action listeners for this
- * object.
- *
- * @param listener The listener to add to the list.
- */
- public synchronized void addActionListener(ActionListener listener)
- {
- action_listeners = AWTEventMulticaster.add(action_listeners, listener);
-
- enableEvents(AWTEvent.ACTION_EVENT_MASK);
- }
-
- /**
- * Removes the specified listener from the list of action listeners
- * for this object.
- *
- * @param listener The listener to remove from the list.
- */
- public synchronized void removeActionListener(ActionListener listener)
- {
- action_listeners = AWTEventMulticaster.remove(action_listeners, listener);
- }
-
- /**
- * Processes the specified event. If the event is an instance of
- * <code>ActionEvent</code> then <code>processActionEvent()</code> is
- * called to process it, otherwise the event is sent to the
- * superclass.
- *
- * @param event The event to process.
- */
- protected void processEvent(AWTEvent event)
- {
- if (event instanceof ActionEvent)
- processActionEvent((ActionEvent)event);
- else
- super.processEvent(event);
- }
-
- /**
- * Processes an action event by calling any registered listeners.
- * Note to subclasses: This method is not called unless action events
- * are enabled on this object. This will be true if any listeners
- * are registered, or if action events were specifically enabled
- * using <code>enableEvents()</code>.
- *
- * @param event The event to process.
- */
- protected void processActionEvent(ActionEvent event)
- {
- if (action_listeners != null)
- action_listeners.actionPerformed(event);
- }
-
- void dispatchEventImpl(AWTEvent e)
- {
- if (e.id <= ActionEvent.ACTION_LAST
- && e.id >= ActionEvent.ACTION_FIRST
- && (action_listeners != null
- || (eventMask & AWTEvent.ACTION_EVENT_MASK) != 0))
- processEvent(e);
- else
- super.dispatchEventImpl(e);
- }
-
- /**
- * Returns a debug string for this object.
- *
- * @return A debug string for this object.
- */
- protected String paramString()
- {
- return(getClass().getName() + "(columns=" + getColumns() + ",echoChar=" +
- getEchoChar());
- }
-
- /**
- * Returns an array of all the objects currently registered as FooListeners
- * upon this <code>TextField</code>. FooListeners are registered using the
- * addFooListener method.
- *
- * @exception ClassCastException If listenerType doesn't specify a class or
- * interface that implements java.util.EventListener.
- *
- * @since 1.3
- */
- public <T extends EventListener> T[] getListeners (Class<T> listenerType)
- {
- if (listenerType == ActionListener.class)
- return AWTEventMulticaster.getListeners (action_listeners, listenerType);
-
- return super.getListeners (listenerType);
- }
-
- /**
- * Return all ActionListeners register to this <code>TextField</code> object
- * as an array.
- *
- * @since 1.4
- */
- public ActionListener[] getActionListeners ()
- {
- return (ActionListener[]) getListeners (ActionListener.class);
- }
-
- /**
- * Generate a unique name for this <code>TextField</code>.
- *
- * @return A unique name for this <code>TextField</code>.
- */
- String generateName()
- {
- return "textfield" + getUniqueLong();
- }
-
- private static synchronized long getUniqueLong()
- {
- return next_textfield_number++;
- }
-
- protected class AccessibleAWTTextField extends AccessibleAWTTextComponent
- {
- private static final long serialVersionUID = 6219164359235943158L;
-
- protected AccessibleAWTTextField()
- {
- }
-
- public AccessibleStateSet getAccessibleStateSet()
- {
- return super.getAccessibleStateSet();
- }
- }
-
- public AccessibleContext getAccessibleContext()
- {
- return new AccessibleAWTTextField();
- }
-
-}