root / trunk / libraries / libUIComponent / src / org / gvsig / gui / awt / event / specificCaretPosition / SpecificCaretPositionListeners.java @ 13136
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package org.gvsig.gui.awt.event.specificCaretPosition; |
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import java.awt.event.FocusAdapter; |
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import java.awt.event.FocusEvent; |
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import javax.swing.event.CaretEvent; |
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import javax.swing.event.CaretListener; |
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import javax.swing.event.DocumentEvent; |
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import javax.swing.event.DocumentListener; |
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import javax.swing.text.JTextComponent; |
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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/**
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* This class has a method which adds the necessary listeners for convert a JTextComponent to another which can be configurated
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* its 'text visible positions when isn't edited' behaviour: left positions, right positions or like JTextComponent (doesn't change text visible positions)
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*
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* @author Pablo Piqueras Bartolom? (p_queras@hotmail.com)
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*/
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public class SpecificCaretPositionListeners { |
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/**
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* Adds three listeners to a JTextComponent component:
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* - A FocusListener -> if this component loses its focus -> set caret position to 0
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* - A DocumentListener -> if this component doesn't have the focus and its caret position has changed -> set caret position to 0
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* - A CaretListener -> sometimes DocumentListener doesn't take effect, but this listener does
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* @param component
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*/
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public static void setListeners(final JTextComponent component) { |
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// The Focus Listener
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component.addFocusListener(new FocusAdapter() { |
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/*
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* (non-Javadoc)
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* @see java.awt.event.FocusListener#focusLost(java.awt.event.FocusEvent)
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*/
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public void focusLost(FocusEvent e) { |
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switch (((ISpecificCaretPosition)component).getCaretPositionMode()) {
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case ISpecificCaretPosition.LEFT_POSITIONS:
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(component).setCaretPosition(0);
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break;
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case ISpecificCaretPosition.RIGHT_POSITIONS:
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(component).setCaretPosition(component.getDocument().getLength()); |
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break;
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case ISpecificCaretPosition.LIKE_JTEXTCOMPONENT: // Do nothing |
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break;
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} |
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} |
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}); |
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// The Document Listener
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component.getDocument().addDocumentListener(new DocumentListener() { |
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/*
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* (non-Javadoc)
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* @see javax.swing.event.DocumentListener#changedUpdate(javax.swing.event.DocumentEvent)
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*/
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public void changedUpdate(DocumentEvent e) { |
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if (!component.isFocusOwner()) {
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switch (((ISpecificCaretPosition)component).getCaretPositionMode()) {
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case ISpecificCaretPosition.LEFT_POSITIONS:
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(component).setCaretPosition(0);
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break;
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case ISpecificCaretPosition.RIGHT_POSITIONS:
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(component).setCaretPosition(component.getDocument().getLength()); |
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break;
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case ISpecificCaretPosition.LIKE_JTEXTCOMPONENT: // Do nothing |
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break;
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} |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see javax.swing.event.DocumentListener#insertUpdate(javax.swing.event.DocumentEvent)
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*/
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public void insertUpdate(DocumentEvent e) { |
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if (!component.isFocusOwner()) {
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switch (((ISpecificCaretPosition)component).getCaretPositionMode()) {
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case ISpecificCaretPosition.LEFT_POSITIONS:
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(component).setCaretPosition(0);
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break;
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case ISpecificCaretPosition.RIGHT_POSITIONS:
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(component).setCaretPosition(component.getDocument().getLength()); |
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break;
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case ISpecificCaretPosition.LIKE_JTEXTCOMPONENT: // Do nothing |
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break;
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} |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see javax.swing.event.DocumentListener#removeUpdate(javax.swing.event.DocumentEvent)
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*/
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public void removeUpdate(DocumentEvent e) { |
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if (!component.isFocusOwner()) {
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switch (((ISpecificCaretPosition)component).getCaretPositionMode()) {
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case ISpecificCaretPosition.LEFT_POSITIONS:
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(component).setCaretPosition(0);
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break;
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case ISpecificCaretPosition.RIGHT_POSITIONS:
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(component).setCaretPosition(component.getDocument().getLength()); |
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break;
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case ISpecificCaretPosition.LIKE_JTEXTCOMPONENT: // Do nothing |
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break;
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} |
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} |
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} |
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}); |
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// The Caret Listener
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component.addCaretListener(new CaretListener() { |
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/*
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* (non-Javadoc)
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* @see javax.swing.event.CaretListener#caretUpdate(javax.swing.event.CaretEvent)
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*/
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public void caretUpdate(CaretEvent e) { |
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if (!component.isFocusOwner()) {
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switch (((ISpecificCaretPosition)component).getCaretPositionMode()) {
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case ISpecificCaretPosition.LEFT_POSITIONS:
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if ((component).getCaretPosition() != 0) |
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(component).setCaretPosition(0);
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break;
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case ISpecificCaretPosition.RIGHT_POSITIONS:
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if ((component).getCaretPosition() != component.getDocument().getLength())
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(component).setCaretPosition(component.getDocument().getLength()); |
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break;
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case ISpecificCaretPosition.LIKE_JTEXTCOMPONENT: // Do nothing |
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break;
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} |
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} |
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} |
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}); |
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} |
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} |