/trunk/libraries/libUIComponent/src/org/gvsig/gui/beans/swing/ValidatingTextField.java - | gvSIG desktop 1 - gvSIG

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       /*
        * The Unified Mapping Platform (JUMP) is an extensible, interactive GUI
        * for visualizing and manipulating spatial features with geometry and attributes.
+       *
        * Copyright (C) 2003 Vivid Solutions
+       *
        * This program 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
        * of the License, or (at your option) any later version.
+       *
        * This program 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 this program; if not, write to the Free Software
        * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+       *
        * For more information, contact:
+       *
        * Vivid Solutions
        * Suite #1A
        * 2328 Government Street
        * Victoria BC  V8T 5G5
        * Canada
+       *
        * (250)385-6040
        * www.vividsolutions.com
        */
       /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
+       *
        * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
+       *
        * This program 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
        * of the License, or (at your option) any later version.
+       *
        * This program 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 this program; if not, write to the Free Software
        * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.
+       *
        * For more information, contact:
+       *
        *  Generalitat Valenciana
        *   Conselleria d'Infraestructures i Transport
        *   Av. Blasco Ib??ez, 50
        *   46010 VALENCIA
        *   SPAIN
+       *
        *      +34 963862235
        *   gvsig@gva.es
        *      www.gvsig.gva.es
+       *
        *    or
+       *
        *   IVER T.I. S.A
        *   Salamanca 50
        *   46005 Valencia
        *   Spain
+       *
        *   +34 963163400
        *   dac@iver.es
        */
       package org.gvsig.gui.beans.swing;
       import java.awt.event.FocusAdapter;
       import java.awt.event.FocusEvent;
       import javax.swing.JOptionPane;
       import javax.swing.JTextField;
       import javax.swing.text.AttributeSet;
       import javax.swing.text.BadLocationException;
       import javax.swing.text.PlainDocument;
       import junit.framework.Assert;
       import org.gvsig.gui.beans.Messages;
       /**
        * Prevents the user from entering invalid data.
        */
       public class ValidatingTextField extends JTextField {
                       private static final long serialVersionUID = -3725027007216791855L;
                       public static final Validator LONG_VALIDATOR = new ValidatingTextField.Validator() {
                   public boolean isValid(String text) {
                       try {
                           Long.parseLong(text.trim());
                           return true;
                       } catch (NumberFormatException e) {
                           return false;
+                      }
+                  }
               };
           /**
            * Prevents the user from entering invalid integer.
            */
           public static final Validator INTEGER_VALIDATOR = new ValidatingTextField.Validator() {
                   public boolean isValid(String text) {
                       try {
                           Integer.parseInt(text.trim());
                           return true;
                       } catch (NumberFormatException e) {
                           return false;
+                      }
+                  }
               };
           /**
            * Prevents the user from entering invalid double.
            */
           public static final Validator DOUBLE_VALIDATOR = new ValidatingTextField.Validator() {
                   public boolean isValid(String text) {
                       try {
                           //Add "0" so user can type "-" [Jon Aquino]
                           Double.parseDouble(text.trim() + "0");
                           return true;
                       } catch (NumberFormatException e) {
                           return false;
+                      }
+                  }
               };
           /**
            * Cleaner that does nothing.
            */
           public static Cleaner DUMMY_CLEANER = new Cleaner() {
                   public String clean(String text) {
                       return text;
+                  }
               };
           /**
            * The validators allow the user to simply enter "+", "-", or ".". If the user
            * doesn't go any farther, this cleaner will set the text to 0, which is reasonable.
            */
           public static Cleaner NUMBER_CLEANER = new Cleaner() {
                   public String clean(String text) {
                       try {
                           Double.parseDouble(text.trim());
                           return text;
                       } catch (NumberFormatException e) {
                           return "0";
+                      }
+                  }
               };
           /**
            * Validator that does nothing.
            */
           public static Validator DUMMY_VALIDATOR = new Validator() {
                   public boolean isValid(String text) {
                       return true;
+                  }
               };
           private Cleaner cleaner;
           /**
            * Validator that uses dummy cleaner.
            */
           public ValidatingTextField(String text, int columns,
               final Validator validator) {
               this(text, columns, LEFT, validator, DUMMY_CLEANER);
+          }
           /**
            * Validator for text fields.
            */
           public ValidatingTextField(String text, int columns,
               int horizontalAlignment, final Validator validator,
               final Cleaner cleaner) {
               super(text, columns);
               this.cleaner = cleaner;
               setHorizontalAlignment(horizontalAlignment);
               installValidationBehavior(this, validator, cleaner);
               //Clean the text, mainly so that parties wishing to install a BlankCleaner
               //need only pass "" for the text. [Jon Aquino]
               setText(cleaner.clean(getText()));
               //Bonus: workaround for how GridBagLayout shrinks components to
               //minimum sizes if it can't accomodate their preferred sizes. [Jon Aquino]
               setMinimumSize(getPreferredSize());
+          }
           //Hopefully this will let us add validation behaviour to combo boxes. [Jon Aquino]
           public static void installValidationBehavior(final JTextField textField,
               final Validator validator, final Cleaner cleaner) {
               textField.setDocument(new PlainDocument() {
                 private static final long serialVersionUID = 7097829094600558963L;
                                                                       public void insertString(int offs, String str, AttributeSet a)
                           throws BadLocationException {
                           String currentText = this.getText(0, getLength());
                           String beforeOffset = currentText.substring(0, offs);
                           String afterOffset = currentText.substring(offs,
                                   currentText.length());
                           String proposedResult = beforeOffset + str + afterOffset;
                           if (validator.isValid(cleaner.clean(proposedResult))) {
                               super.insertString(offs, str, a);
+                          }
+                      }
                       public void remove(int offs, int len)
                           throws BadLocationException {
                           String currentText = this.getText(0, getLength());
                           String beforeOffset = currentText.substring(0, offs);
                           String afterOffset = currentText.substring(len + offs,
                                   currentText.length());
                           String proposedResult = beforeOffset + afterOffset;
                           if (validator.isValid(cleaner.clean(proposedResult))) {
                               super.remove(offs, len);
+                          }
+                      }
                   });
               textField.addFocusListener(new FocusAdapter() {
                       public void focusLost(FocusEvent e) {
                           textField.setText(cleaner.clean(textField.getText()));
+                      }
                   });
+          }
           public String getText() {
               //Focus may not be lost yet (e.g. when syncing with scrollbar) [Jon Aquino]
               return cleaner.clean(super.getText());
+          }
           public double getDouble() {
               return Double.parseDouble(getText().trim());
+          }
           public int getInteger() {
               return Integer.parseInt(getText().trim());
+          }
           public static interface Validator {
               public boolean isValid(String text);
+          }
           public static interface Cleaner {
               public String clean(String text);
+          }
       /**
        * Implements validator with a greater than threshold.
        */
           public static class GreaterThanValidator implements Validator {
               private double threshold;
               public GreaterThanValidator(double threshold) {
                   this.threshold = threshold;
+              }
               public boolean isValid(String text) {
                   return Double.parseDouble(text.trim()) > threshold;
+              }
+          }
       /**
        * Implements validator with a less than threshold.
        */
           public static class LessThanValidator implements Validator {
               private double threshold;
               public LessThanValidator(double threshold) {
                   this.threshold = threshold;
+              }
               public boolean isValid(String text) {
                   return Double.parseDouble(text.trim()) < threshold;
+              }
+          }
       /**
        * Implements validator with a greater than or equal to threshold.
        */
           public static class GreaterThanOrEqualValidator implements Validator {
               private double threshold;
               public GreaterThanOrEqualValidator(double threshold) {
                   this.threshold = threshold;
+              }
               public boolean isValid(String text) {
                   return Double.parseDouble(text.trim()) >= threshold;
+              }
+          }
       /**
        * Implements validator with a less than or equal to threshold.
        */
           public static class LessThanOrEqualValidator implements Validator {
               private double threshold;
               public LessThanOrEqualValidator(double threshold) {
                   this.threshold = threshold;
+              }
               public boolean isValid(String text) {
                   return Double.parseDouble(text.trim()) <= threshold;
+              }
+          }
           /**
        * Implements cleaner which cleans up blank strings.
        */
           public static class BlankCleaner implements Cleaner {
               private String replacement;
               public BlankCleaner(String replacement) {
                   this.replacement = replacement;
+              }
               public String clean(String text) {
                   return (text.trim().length() == 0) ? replacement : text;
+              }
+          }
           /**
            * Allow the user to start typing a number with "-" or "."
            * @author jaquino
+           *
            * To change the template for this generated type comment go to
            * Window>Preferences>Java>Code Generation>Code and Comments
            */
           public static class NumberCleaner implements Cleaner {
               private String textToAppend;
               public NumberCleaner(String textToAppend) {
                   this.textToAppend = textToAppend;
+              }
               public String clean(String text) {
                   if (text.trim().length() == 0) { return text; }
                   try {
                       Double.parseDouble(text);
                       return text;
+                  }
                   catch (NumberFormatException e) {
                       return text + textToAppend;
+                  }
+              }
+          }
           public static class MinIntCleaner implements Cleaner {
               private int minimum;
               public MinIntCleaner(int minimum) {
                   this.minimum = minimum;
+              }
               public String clean(String text) {
                       String s="";
                       s=""+ Math.max(minimum, Integer.parseInt(text));
                       return s;
+              }
+          }
       /**
        * Extends CompositeValidator to validat that integers is within a set of boundary values.
        */
           public static class BoundedIntValidator extends CompositeValidator {
               public BoundedIntValidator(int min, int max) {
                   super(new Validator[] {
                           INTEGER_VALIDATOR, new GreaterThanOrEqualValidator(min),
                           new LessThanOrEqualValidator(max)
                       });
                   Assert.assertTrue(min < max);
+              }
+          }
           public static class BoundedDoubleValidator extends CompositeValidator {
               public BoundedDoubleValidator(double min, boolean includeMin,
                   double max, boolean includeMax) {
                   super(new Validator[] {
                           DOUBLE_VALIDATOR,
                           includeMin
                           ? (Validator) new GreaterThanOrEqualValidator(min)
                           : new GreaterThanValidator(min),
                           includeMax ? (Validator) new LessThanOrEqualValidator(max)
                                      : new LessThanValidator(max)
                       });
                   Assert.assertTrue(min < max);
+              }
+          }
           public static class MaxIntCleaner implements Cleaner {
               private int maximum;
               public MaxIntCleaner(int maximum) {
                   this.maximum = maximum;
+              }
               public String clean(String text) {
                       String s="";
                       s=""+ Math.min(maximum, Integer.parseInt(text));
                       return s;
+              }
+          }
       /**
        * Implements validator to check for more than one condition.
        */
           public static class CompositeValidator implements Validator {
               private Validator[] validators;
               public CompositeValidator(Validator[] validators) {
                   this.validators = validators;
+              }
               public boolean isValid(String text) {
                   for (int i = 0; i < validators.length; i++) {
                       if (!validators[i].isValid(text)) {
                           return false;
+                      }
+                  }
                   return true;
+              }
+          }
           public static class CompositeCleaner implements Cleaner {
               private Cleaner[] cleaners;
               public CompositeCleaner(Cleaner[] cleaners) {
                   this.cleaners = cleaners;
+              }
               public String clean(String text) {
                   String result = text;
                   try{
                           for (int i = 0; i < cleaners.length; i++) {
                                   result = cleaners[i].clean(result);
+                          }
                       }catch (NumberFormatException e) {
                                           JOptionPane.showMessageDialog(null, Messages.getText("numero_incorrecto"));
+                         }
                   return result;
+              }
+          }
+      }