+++ /dev/null
-/* TextComponent.java -- Widgets for entering text
- 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.TextEvent;
-import java.awt.event.TextListener;
-import java.awt.peer.TextComponentPeer;
-import java.awt.peer.ComponentPeer;
-
-/**
- * This class provides common functionality for widgets than
- * contain text.
- *
- * @author Aaron M. Renn (arenn@urbanophile.com)
- */
-public class TextComponent extends Component implements java.io.Serializable
-{
-
-/*
- * Static Variables
- */
-
-// Constant for serialization
-private static final long serialVersionUID = -2214773872412987419L;
-
-/*
- * Instance Variables
- */
-
-/**
- * @serial Indicates whether or not this component is editable.
- */
-private boolean editable;
-
-/**
- * @serial The starting position of the selected text region.
- */
-private int selectionStart;
-
-/**
- * @serial The ending position of the selected text region.
- */
-private int selectionEnd;
-
-/**
- * @serial The text in the component
- */
-private String text;
-
-/**
- * A list of listeners that will receive events from this object.
- */
-protected transient TextListener textListener;
-
-/*************************************************************************/
-
-/*
- * Constructors
- */
-
-TextComponent(String text)
-{
- this.text = text;
-}
-
-/*************************************************************************/
-
-/*
- * Instance Methods
- */
-
-/**
- * Returns the text in this component
- *
- * @return The text in this component.
- */
-public synchronized String
-getText()
-{
- TextComponentPeer tcp = (TextComponentPeer)getPeer();
- if (tcp != null)
- text = tcp.getText();
-
- return(text);
-}
-
-/*************************************************************************/
-
-/**
- * Sets the text in this component to the specified string.
- *
- * @param text The new text for this component.
- */
-public synchronized void
-setText(String text)
-{
- if (text == null)
- text = "";
-
- this.text = text;
-
- TextComponentPeer tcp = (TextComponentPeer)getPeer();
- if (tcp != null)
- tcp.setText(text);
-}
-
-/*************************************************************************/
-
-/**
- * Returns a string that contains the text that is currently selected.
- *
- * @return The currently selected text region.
- */
-public synchronized String
-getSelectedText()
-{
- String alltext = getText();
- int start = getSelectionStart();
- int end = getSelectionEnd();
-
- return(alltext.substring(start, end));
-}
-
-/*************************************************************************/
-
-/**
- * Returns the starting position of the selected text region.
- * // FIXME: What is returned if there is no selected text?
- *
- * @return The starting position of the selected text region.
- */
-public synchronized int
-getSelectionStart()
-{
- TextComponentPeer tcp = (TextComponentPeer)getPeer();
- if (tcp != null)
- selectionStart = tcp.getSelectionStart();
-
- return(selectionStart);
-}
-
-/*************************************************************************/
-
-/**
- * Sets the starting position of the selected region to the
- * specified value. If the specified value is out of range, then it
- * will be silently changed to the nearest legal value.
- *
- * @param selectionStart The new start position for selected text.
- */
-public synchronized void
-setSelectionStart(int selectionStart)
-{
- select(selectionStart, getSelectionEnd());
-}
-
-/*************************************************************************/
-
-/**
- * Returns the ending position of the selected text region.
- * // FIXME: What is returned if there is no selected text.
- *
- * @return The ending position of the selected text region.
- */
-public synchronized int
-getSelectionEnd()
-{
- TextComponentPeer tcp = (TextComponentPeer)getPeer();
- if (tcp != null)
- selectionEnd = tcp.getSelectionEnd();
-
- return(selectionEnd);
-}
-
-/*************************************************************************/
-
-/**
- * Sets the ending position of the selected region to the
- * specified value. If the specified value is out of range, then it
- * will be silently changed to the nearest legal value.
- *
- * @param selectionEnd The new start position for selected text.
- */
-public synchronized void
-setSelectionEnd(int selectionEnd)
-{
- select(getSelectionStart(), selectionEnd);
-}
-
-/*************************************************************************/
-
-/**
- * This method sets the selected text range to the text between the
- * specified start and end positions. Illegal values for these
- * positions are silently fixed.
- *
- * @param startSelection The new start position for the selected text.
- * @param endSelection The new end position for the selected text.
- */
-public synchronized void
-select(int selectionStart, int endSelection)
-{
- if (selectionStart < 0)
- selectionStart = 0;
-
- if (selectionStart > getText().length())
- selectionStart = text.length();
-
- if (selectionEnd > text.length())
- selectionEnd = text.length();
-
- if (selectionStart > getSelectionEnd())
- selectionStart = selectionEnd;
-
- this.selectionStart = selectionStart;
- this.selectionEnd = selectionEnd;
-
- TextComponentPeer tcp = (TextComponentPeer)getPeer();
- if (tcp != null)
- tcp.select(selectionStart, selectionEnd);
-}
-
-/*************************************************************************/
-
-/**
- * Selects all of the text in the component.
- */
-public synchronized void
-selectAll()
-{
- select(0, getText().length());
-}
-
-/*************************************************************************/
-
-/**
- * Returns the current caret position in the text.
- *
- * @return The caret position in the text.
- */
-public synchronized int
-getCaretPosition()
-{
- TextComponentPeer tcp = (TextComponentPeer)getPeer();
- if (tcp != null)
- return(tcp.getCaretPosition());
- else
- return(0);
-}
-
-/*************************************************************************/
-
-/**
- * Sets the caret position to the specified value.
- *
- * @param caretPosition The new caret position.
- */
-public synchronized void
-setCaretPosition(int caretPosition)
-{
- TextComponentPeer tcp = (TextComponentPeer)getPeer();
- if (tcp != null)
- tcp.setCaretPosition(caretPosition);
-}
-
-/*************************************************************************/
-
-/**
- * Tests whether or not this component's text can be edited.
- *
- * @return <code>true</code> if the text can be edited, <code>false</code>
- * otherwise.
- */
-public boolean
-isEditable()
-{
- return(editable);
-}
-
-/*************************************************************************/
-
-/**
- * Sets whether or not this component's text can be edited.
- *
- * @param editable <code>true</code> to enable editing of the text,
- * <code>false</code> to disable it.
- */
-public synchronized void
-setEditable(boolean editable)
-{
- this.editable = editable;
-
- TextComponentPeer tcp = (TextComponentPeer)getPeer();
- if (tcp != null)
- tcp.setEditable(editable);
-}
-
-/*************************************************************************/
-
-/**
- * Notifies the component that it should destroy its native peer.
- */
-public void
-removeNotify()
-{
- super.removeNotify();
-}
-
-/*************************************************************************/
-
-/**
- * Adds a new listener to the list of text listeners for this
- * component.
- *
- * @param listener The listener to be added.
- */
-public synchronized void
-addTextListener(TextListener listener)
-{
- textListener = AWTEventMulticaster.add(textListener, listener);
-
- enableEvents(AWTEvent.TEXT_EVENT_MASK);
-}
-
-/*************************************************************************/
-
-/**
- * Removes the specified listener from the list of listeners
- * for this component.
- *
- * @param listener The listener to remove.
- */
-public synchronized void
-removeTextListener(TextListener listener)
-{
- textListener = AWTEventMulticaster.remove(textListener, listener);
-}
-
-/*************************************************************************/
-
-/**
- * Processes the specified event for this component. Text events are
- * processed by calling the <code>processTextEvent()</code> method.
- * All other events are passed to the superclass method.
- *
- * @param event The event to process.
- */
-protected void
-processEvent(AWTEvent event)
-{
- if (event instanceof TextEvent)
- processTextEvent((TextEvent)event);
- else
- super.processEvent(event);
-}
-
-/*************************************************************************/
-
-/**
- * Processes the specified text event by dispatching it to any listeners
- * that are registered. Note that this method will only be called
- * if text event's are enabled. This will be true if there are any
- * registered listeners, or if the event has been specifically
- * enabled using <code>enableEvents()</code>.
- *
- * @param event The text event to process.
- */
-protected void
-processTextEvent(TextEvent event)
-{
- if (textListener != null)
- textListener.textValueChanged(event);
-}
-
-/*************************************************************************/
-
-/**
- * Returns a debugging string.
- *
- * @return A debugging string.
- */
-protected String
-paramString()
-{
- return(getClass().getName() + "(text=" + getText() + ")");
-}
-
-} // class TextComponent
-
projects / msp430-gcc.git / blobdiff