svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.utils / src / main / java / org / gvsig / utils / swing / JComboBox.java @ 40561
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 gvSIG Association.
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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 3
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.utils.swing; |
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import java.awt.event.ActionEvent; |
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import java.awt.event.KeyEvent; |
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import java.awt.event.KeyListener; |
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import java.util.Vector; |
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import javax.swing.ComboBoxModel; |
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import javax.swing.DefaultComboBoxModel; |
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import javax.swing.JTextField; |
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import javax.swing.plaf.basic.BasicComboBoxEditor; |
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/**
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* ComboBox autocompletable
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*
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* @author Fernando Gonz?lez Cort?s
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*/
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public class JComboBox extends javax.swing.JComboBox { |
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/**
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* Construye un combobox
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*/
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public JComboBox() { |
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super();
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init(); |
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} |
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/**
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* Construye un combobox
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*
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* @param arg0
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*/
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public JComboBox(Object[] arg0) { |
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super(arg0);
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init(); |
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} |
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/**
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* Construye un combobox
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*
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* @param arg0
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*/
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public JComboBox(Vector arg0) { |
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super(arg0);
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init(); |
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} |
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/**
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* Construye un combobox
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*
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* @param arg0
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*/
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public JComboBox(ComboBoxModel arg0) { |
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super(arg0);
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init(); |
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} |
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/**
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* Inicializa el combo
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*/
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private void init() { |
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this.setEditor(new BasicComboBoxEditor()); |
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JTextField jtext = (JTextField) JComboBox.this.getEditor() |
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.getEditorComponent(); |
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jtext.addKeyListener(new MyKeyListener());
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jtext.setText("");
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} |
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/**
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* Manejador de los eventos Key para hacer el autocompletado
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*
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* @author Fernando Gonz?lez Cort?s
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*/
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public class MyKeyListener implements KeyListener { |
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private int lastCaretPosition = 0; |
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private String lastText = ""; |
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private boolean bAutocompletar=true; |
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/**
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* Devuelve dada una String, la String del modelo que empieza por dicha
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* String si hay alguna, o null si no hay ninguna
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*
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* @param text texto que se busca en el modelo
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*
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* @return String del modelo o null
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*/
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private String isInModel(String text) { |
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DefaultComboBoxModel model = (DefaultComboBoxModel) JComboBox.this.getModel(); |
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for (int i = 0; i < model.getSize(); i++) { |
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if ((model.getElementAt(i).toString()).startsWith(text)) {
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return model.getElementAt(i).toString();
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} |
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} |
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return null; |
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} |
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/**
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* @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
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*/
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public void actionPerformed(ActionEvent arg0) { |
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JTextField jtext = (JTextField) JComboBox.this.getEditor() |
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.getEditorComponent(); |
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String texto = jtext.getText();
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String text = isInModel(texto);
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if (text != null) { |
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int caretPos = texto.length();
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jtext.setText(text); |
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jtext.setCaretPosition(caretPos); |
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jtext.setSelectionStart(caretPos); |
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jtext.setSelectionEnd(text.length()); |
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} |
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} |
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/**
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* @see java.awt.event.KeyListener#keyPressed(java.awt.event.KeyEvent)
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*/
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public void keyPressed(KeyEvent e) { |
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JTextField jtext = (JTextField) JComboBox.this.getEditor() |
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.getEditorComponent(); |
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bAutocompletar = true;
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if ((e.getKeyCode() == KeyEvent.VK_BACK_SPACE) |
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|| (e.getKeyCode() == KeyEvent.VK_DELETE))
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{ |
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bAutocompletar = false;
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/* if ((lastCaretPosition >=0) &&
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(lastCaretPosition <= jtext.getText().length()))
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jtext.setCaretPosition(lastCaretPosition); */
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} |
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} |
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/**
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* @see java.awt.event.KeyListener#keyReleased(java.awt.event.KeyEvent)
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*/
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public void keyReleased(KeyEvent e) { |
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JTextField jtext = (JTextField) JComboBox.this.getEditor() |
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.getEditorComponent(); |
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String texto = jtext.getText().substring(0, jtext.getCaretPosition()); |
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if (!bAutocompletar) return; |
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String text = isInModel(texto);
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if (!jtext.getText().equals(lastText) && (text != null)) { |
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int caretPos = texto.length();
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jtext.setText(text); |
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jtext.setCaretPosition(text.length()); |
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jtext.moveCaretPosition(caretPos); |
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lastText = text; |
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lastCaretPosition = caretPos; |
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JComboBox.this.setSelectedItem(text);
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} else {
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lastCaretPosition = jtext.getCaretPosition(); |
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} |
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} |
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/**
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* @see java.awt.event.KeyListener#keyTyped(java.awt.event.KeyEvent)
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*/
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public void keyTyped(KeyEvent e) { |
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} |
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} |
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} |