mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-22 12:20:44 +08:00
956e776dd2
* java/awt/TextField.java: Replaced with Classpath version. * java/awt/TextArea.java: Replaced with Classpath version. * java/awt/TextComponent.java: Replaced with Classpath version. From-SVN: r49113
470 lines
12 KiB
Java
470 lines
12 KiB
Java
/* TextField.java -- A one line text entry field
|
|
Copyright (C) 1999 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., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 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.TextFieldPeer;
|
|
import java.awt.peer.TextComponentPeer;
|
|
import java.awt.peer.ComponentPeer;
|
|
|
|
/**
|
|
* This class implements a single line text entry field widget
|
|
*
|
|
* @author Aaron M. Renn (arenn@urbanophile.com)
|
|
*/
|
|
public class TextField extends TextComponent implements java.io.Serializable
|
|
{
|
|
|
|
/*
|
|
* Static Variables
|
|
*/
|
|
|
|
// Serialization constant
|
|
private static final long serialVersionUID = -2966288784432217853L;
|
|
|
|
/*************************************************************************/
|
|
|
|
/*
|
|
* Instance Variables
|
|
*/
|
|
|
|
/**
|
|
* @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;
|
|
|
|
/*************************************************************************/
|
|
|
|
/*
|
|
* Constructors
|
|
*/
|
|
|
|
/*
|
|
* Initializes a new instance of <code>TextField</code> that is empty
|
|
* and has one column.
|
|
*/
|
|
public
|
|
TextField()
|
|
{
|
|
this("", 1);
|
|
}
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
public
|
|
TextField(String text)
|
|
{
|
|
this(text, 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.
|
|
*/
|
|
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.
|
|
*/
|
|
public
|
|
TextField(String text, int columns)
|
|
{
|
|
super(text);
|
|
this.columns = columns;
|
|
}
|
|
|
|
/*************************************************************************/
|
|
|
|
/*
|
|
* Instance Methods
|
|
*/
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
this.echoChar = echoChar;
|
|
|
|
TextFieldPeer tfp = (TextFieldPeer)getPeer();
|
|
if (tfp != null)
|
|
tfp.setEchoChar(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)
|
|
{
|
|
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)
|
|
{
|
|
TextFieldPeer tfp = (TextFieldPeer)getPeer();
|
|
if (tfp == null)
|
|
return(null); // FIXME: What do we do if there is no peer?
|
|
|
|
return(tfp.getMinimumSize(columns));
|
|
}
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Returns the minimum size for this text field.
|
|
*
|
|
* @return The minimum size for this text field.
|
|
*
|
|
* @deprecated This method is depcreated in favor of
|
|
* <code>getMinimumSize()</code>.
|
|
*/
|
|
public Dimension
|
|
minimumSize()
|
|
{
|
|
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.
|
|
*
|
|
* @deprecated This method is deprecated in favor of
|
|
* <code>getMinimumSize(int)</code>.
|
|
*/
|
|
public Dimension
|
|
minimumSize(int columns)
|
|
{
|
|
return(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)
|
|
{
|
|
TextFieldPeer tfp = (TextFieldPeer)getPeer();
|
|
if (tfp == null)
|
|
return(null); // FIXME: What do we do if there is no peer?
|
|
|
|
return(tfp.getPreferredSize(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(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.
|
|
*
|
|
* @deprecated This method is deprecated in favor of
|
|
* <code>getPreferredSize(int)</code>.
|
|
*/
|
|
public Dimension
|
|
preferredSize(int columns)
|
|
{
|
|
return(getPreferredSize(columns));
|
|
}
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Notifies this object that it should create its native peer.
|
|
*/
|
|
public void
|
|
addNotify()
|
|
{
|
|
if (getPeer() != null)
|
|
return;
|
|
|
|
setPeer((ComponentPeer)getToolkit().createTextField(this));
|
|
}
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Returns a debug string for this object.
|
|
*
|
|
* @return A debug string for this object.
|
|
*/
|
|
protected String
|
|
paramString()
|
|
{
|
|
return(getClass().getName() + "(columns=" + getColumns() + ",echoChar=" +
|
|
getEchoChar());
|
|
}
|
|
|
|
} // class TextField
|