svn-gvsig-desktop / tags / v1_0_2_Build_905 / applications / appgvSIG / src / com / iver / cit / gvsig / gui / ValidatingTextField.java @ 10767
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1 | 312 | fernando | /*
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2 | * The Unified Mapping Platform (JUMP) is an extensible, interactive GUI
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3 | * for visualizing and manipulating spatial features with geometry and attributes.
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4 | *
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5 | * Copyright (C) 2003 Vivid Solutions
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6 | *
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7 | * This program is free software; you can redistribute it and/or
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8 | * modify it under the terms of the GNU General Public License
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9 | * as published by the Free Software Foundation; either version 2
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10 | * of the License, or (at your option) any later version.
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11 | *
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12 | * This program is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with this program; if not, write to the Free Software
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19 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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20 | *
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21 | * For more information, contact:
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22 | *
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23 | * Vivid Solutions
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24 | * Suite #1A
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25 | * 2328 Government Street
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26 | * Victoria BC V8T 5G5
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27 | * Canada
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28 | *
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29 | * (250)385-6040
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30 | * www.vividsolutions.com
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31 | */
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32 | 1103 | fjp | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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33 | *
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34 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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35 | *
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36 | * This program is free software; you can redistribute it and/or
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37 | * modify it under the terms of the GNU General Public License
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38 | * as published by the Free Software Foundation; either version 2
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39 | * of the License, or (at your option) any later version.
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40 | *
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41 | * This program is distributed in the hope that it will be useful,
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42 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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43 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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44 | * GNU General Public License for more details.
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45 | *
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46 | * You should have received a copy of the GNU General Public License
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47 | * along with this program; if not, write to the Free Software
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48 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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49 | *
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50 | * For more information, contact:
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51 | *
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52 | * Generalitat Valenciana
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53 | * Conselleria d'Infraestructures i Transport
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54 | * Av. Blasco Ib??ez, 50
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55 | * 46010 VALENCIA
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56 | * SPAIN
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57 | *
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58 | * +34 963862235
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59 | * gvsig@gva.es
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60 | * www.gvsig.gva.es
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61 | *
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62 | * or
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63 | *
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64 | * IVER T.I. S.A
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65 | * Salamanca 50
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66 | * 46005 Valencia
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67 | * Spain
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68 | *
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69 | * +34 963163400
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70 | * dac@iver.es
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71 | */
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72 | 312 | fernando | package com.iver.cit.gvsig.gui; |
73 | |||
74 | 7053 | caballero | import java.awt.Component; |
75 | 312 | fernando | import java.awt.event.FocusAdapter; |
76 | import java.awt.event.FocusEvent; |
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77 | |||
78 | 7053 | caballero | import javax.swing.JOptionPane; |
79 | 312 | fernando | import javax.swing.JTextField; |
80 | import javax.swing.text.AttributeSet; |
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81 | import javax.swing.text.BadLocationException; |
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82 | import javax.swing.text.PlainDocument; |
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83 | |||
84 | 7053 | caballero | import com.iver.andami.PluginServices; |
85 | 312 | fernando | import com.vividsolutions.jts.util.Assert; |
86 | |||
87 | |||
88 | /**
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89 | * Prevents the user from entering invalid data.
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90 | */
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91 | public class ValidatingTextField extends JTextField { |
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92 | public static final Validator LONG_VALIDATOR = new ValidatingTextField.Validator() { |
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93 | public boolean isValid(String text) { |
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94 | try {
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95 | Long.parseLong(text.trim());
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96 | |||
97 | return true; |
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98 | } catch (NumberFormatException e) { |
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99 | return false; |
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100 | } |
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101 | } |
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102 | }; |
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103 | |||
104 | /**
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105 | * Prevents the user from entering invalid integer.
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106 | */
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107 | public static final Validator INTEGER_VALIDATOR = new ValidatingTextField.Validator() { |
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108 | public boolean isValid(String text) { |
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109 | try {
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110 | Integer.parseInt(text.trim());
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111 | |||
112 | return true; |
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113 | } catch (NumberFormatException e) { |
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114 | return false; |
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115 | } |
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116 | } |
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117 | }; |
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118 | |||
119 | /**
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120 | * Prevents the user from entering invalid double.
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121 | */
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122 | public static final Validator DOUBLE_VALIDATOR = new ValidatingTextField.Validator() { |
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123 | public boolean isValid(String text) { |
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124 | try {
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125 | //Add "0" so user can type "-" [Jon Aquino]
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126 | Double.parseDouble(text.trim() + "0"); |
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127 | |||
128 | return true; |
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129 | } catch (NumberFormatException e) { |
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130 | return false; |
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131 | } |
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132 | } |
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133 | }; |
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134 | |||
135 | /**
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136 | * Cleaner that does nothing.
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137 | */
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138 | public static Cleaner DUMMY_CLEANER = new Cleaner() { |
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139 | public String clean(String text) { |
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140 | return text;
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141 | } |
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142 | }; |
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143 | |||
144 | /**
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145 | * The validators allow the user to simply enter "+", "-", or ".". If the user
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146 | * doesn't go any farther, this cleaner will set the text to 0, which is reasonable.
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147 | */
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148 | public static Cleaner NUMBER_CLEANER = new Cleaner() { |
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149 | public String clean(String text) { |
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150 | try {
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151 | Double.parseDouble(text.trim());
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152 | |||
153 | return text;
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154 | } catch (NumberFormatException e) { |
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155 | return "0"; |
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156 | } |
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157 | } |
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158 | }; |
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159 | |||
160 | /**
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161 | * Validator that does nothing.
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162 | */
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163 | public static Validator DUMMY_VALIDATOR = new Validator() { |
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164 | public boolean isValid(String text) { |
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165 | return true; |
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166 | } |
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167 | }; |
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168 | |||
169 | private Cleaner cleaner;
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170 | |||
171 | /**
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172 | * Validator that uses dummy cleaner.
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173 | */
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174 | public ValidatingTextField(String text, int columns, |
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175 | final Validator validator) { |
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176 | this(text, columns, LEFT, validator, DUMMY_CLEANER);
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177 | } |
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178 | |||
179 | /**
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180 | * Validator for text fields.
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181 | */
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182 | public ValidatingTextField(String text, int columns, |
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183 | int horizontalAlignment, final Validator validator, |
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184 | final Cleaner cleaner) {
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185 | super(text, columns);
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186 | this.cleaner = cleaner;
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187 | setHorizontalAlignment(horizontalAlignment); |
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188 | installValidationBehavior(this, validator, cleaner);
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189 | |||
190 | //Clean the text, mainly so that parties wishing to install a BlankCleaner
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191 | //need only pass "" for the text. [Jon Aquino]
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192 | setText(cleaner.clean(getText())); |
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193 | |||
194 | //Bonus: workaround for how GridBagLayout shrinks components to
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195 | //minimum sizes if it can't accomodate their preferred sizes. [Jon Aquino]
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196 | setMinimumSize(getPreferredSize()); |
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197 | } |
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198 | |||
199 | //Hopefully this will let us add validation behaviour to combo boxes. [Jon Aquino]
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200 | public static void installValidationBehavior(final JTextField textField, |
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201 | final Validator validator, final Cleaner cleaner) { |
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202 | textField.setDocument(new PlainDocument() { |
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203 | public void insertString(int offs, String str, AttributeSet a) |
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204 | throws BadLocationException { |
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205 | String currentText = this.getText(0, getLength()); |
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206 | String beforeOffset = currentText.substring(0, offs); |
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207 | String afterOffset = currentText.substring(offs,
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208 | currentText.length()); |
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209 | String proposedResult = beforeOffset + str + afterOffset;
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210 | if (validator.isValid(cleaner.clean(proposedResult))) {
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211 | super.insertString(offs, str, a);
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212 | } |
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213 | } |
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214 | |||
215 | public void remove(int offs, int len) |
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216 | throws BadLocationException { |
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217 | String currentText = this.getText(0, getLength()); |
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218 | String beforeOffset = currentText.substring(0, offs); |
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219 | String afterOffset = currentText.substring(len + offs,
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220 | currentText.length()); |
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221 | String proposedResult = beforeOffset + afterOffset;
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222 | if (validator.isValid(cleaner.clean(proposedResult))) {
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223 | super.remove(offs, len);
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224 | } |
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225 | } |
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226 | }); |
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227 | textField.addFocusListener(new FocusAdapter() { |
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228 | public void focusLost(FocusEvent e) { |
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229 | textField.setText(cleaner.clean(textField.getText())); |
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230 | } |
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231 | }); |
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232 | } |
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233 | |||
234 | public String getText() { |
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235 | //Focus may not be lost yet (e.g. when syncing with scrollbar) [Jon Aquino]
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236 | return cleaner.clean(super.getText()); |
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237 | } |
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238 | |||
239 | public double getDouble() { |
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240 | return Double.parseDouble(getText().trim()); |
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241 | } |
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242 | |||
243 | public int getInteger() { |
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244 | return Integer.parseInt(getText().trim()); |
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245 | } |
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246 | |||
247 | public static interface Validator { |
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248 | public boolean isValid(String text); |
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249 | } |
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250 | |||
251 | public static interface Cleaner { |
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252 | public String clean(String text); |
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253 | } |
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254 | |||
255 | /**
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256 | * Implements validator with a greater than threshold.
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257 | */
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258 | |||
259 | public static class GreaterThanValidator implements Validator { |
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260 | private double threshold; |
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261 | |||
262 | public GreaterThanValidator(double threshold) { |
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263 | this.threshold = threshold;
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264 | } |
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265 | |||
266 | public boolean isValid(String text) { |
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267 | return Double.parseDouble(text.trim()) > threshold; |
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268 | } |
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269 | } |
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270 | /**
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271 | * Implements validator with a less than threshold.
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272 | */
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273 | |||
274 | public static class LessThanValidator implements Validator { |
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275 | private double threshold; |
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276 | |||
277 | public LessThanValidator(double threshold) { |
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278 | this.threshold = threshold;
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279 | } |
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280 | |||
281 | public boolean isValid(String text) { |
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282 | return Double.parseDouble(text.trim()) < threshold; |
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283 | } |
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284 | } |
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285 | /**
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286 | * Implements validator with a greater than or equal to threshold.
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287 | */
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288 | |||
289 | public static class GreaterThanOrEqualValidator implements Validator { |
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290 | private double threshold; |
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291 | |||
292 | public GreaterThanOrEqualValidator(double threshold) { |
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293 | this.threshold = threshold;
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294 | } |
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295 | |||
296 | public boolean isValid(String text) { |
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297 | return Double.parseDouble(text.trim()) >= threshold; |
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298 | } |
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299 | } |
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300 | /**
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301 | * Implements validator with a less than or equal to threshold.
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302 | */
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303 | |||
304 | public static class LessThanOrEqualValidator implements Validator { |
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305 | private double threshold; |
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306 | |||
307 | public LessThanOrEqualValidator(double threshold) { |
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308 | this.threshold = threshold;
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309 | } |
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310 | |||
311 | public boolean isValid(String text) { |
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312 | return Double.parseDouble(text.trim()) <= threshold; |
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313 | } |
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314 | } |
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315 | 7053 | caballero | |
316 | 312 | fernando | /**
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317 | * Implements cleaner which cleans up blank strings.
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318 | */
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319 | |||
320 | |||
321 | public static class BlankCleaner implements Cleaner { |
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322 | private String replacement; |
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323 | |||
324 | public BlankCleaner(String replacement) { |
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325 | this.replacement = replacement;
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326 | } |
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327 | |||
328 | public String clean(String text) { |
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329 | return (text.trim().length() == 0) ? replacement : text; |
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330 | } |
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331 | } |
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332 | 7053 | caballero | |
333 | 312 | fernando | /**
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334 | * Allow the user to start typing a number with "-" or "."
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335 | * @author jaquino
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336 | *
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337 | * To change the template for this generated type comment go to
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338 | * Window>Preferences>Java>Code Generation>Code and Comments
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339 | */
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340 | public static class NumberCleaner implements Cleaner { |
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341 | private String textToAppend; |
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342 | |||
343 | public NumberCleaner(String textToAppend) { |
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344 | this.textToAppend = textToAppend;
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345 | } |
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346 | |||
347 | public String clean(String text) { |
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348 | if (text.trim().length() == 0) { return text; } |
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349 | try {
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350 | Double.parseDouble(text);
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351 | return text;
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352 | } |
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353 | catch (NumberFormatException e) { |
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354 | return text + textToAppend;
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355 | } |
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356 | } |
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357 | 7053 | caballero | } |
358 | 312 | fernando | |
359 | public static class MinIntCleaner implements Cleaner { |
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360 | private int minimum; |
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361 | |||
362 | public MinIntCleaner(int minimum) { |
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363 | this.minimum = minimum;
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364 | } |
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365 | |||
366 | public String clean(String text) { |
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367 | 7053 | caballero | String s=""; |
368 | s=""+ Math.max(minimum, Integer.parseInt(text)); |
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369 | return s;
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370 | 312 | fernando | } |
371 | } |
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372 | |||
373 | /**
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374 | * Extends CompositeValidator to validat that integers is within a set of boundary values.
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375 | */
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376 | public static class BoundedIntValidator extends CompositeValidator { |
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377 | public BoundedIntValidator(int min, int max) { |
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378 | super(new Validator[] { |
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379 | INTEGER_VALIDATOR, new GreaterThanOrEqualValidator(min),
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380 | new LessThanOrEqualValidator(max)
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381 | }); |
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382 | Assert.isTrue(min < max); |
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383 | } |
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384 | } |
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385 | |||
386 | public static class BoundedDoubleValidator extends CompositeValidator { |
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387 | public BoundedDoubleValidator(double min, boolean includeMin, |
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388 | double max, boolean includeMax) { |
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389 | super(new Validator[] { |
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390 | DOUBLE_VALIDATOR, |
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391 | includeMin |
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392 | ? (Validator) new GreaterThanOrEqualValidator(min) |
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393 | : new GreaterThanValidator(min),
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394 | includeMax ? (Validator) new LessThanOrEqualValidator(max) |
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395 | : new LessThanValidator(max)
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396 | }); |
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397 | Assert.isTrue(min < max); |
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398 | } |
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399 | } |
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400 | |||
401 | public static class MaxIntCleaner implements Cleaner { |
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402 | private int maximum; |
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403 | |||
404 | public MaxIntCleaner(int maximum) { |
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405 | this.maximum = maximum;
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406 | } |
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407 | |||
408 | public String clean(String text) { |
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409 | 7053 | caballero | String s=""; |
410 | s=""+ Math.min(maximum, Integer.parseInt(text)); |
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411 | return s;
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412 | 312 | fernando | } |
413 | } |
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414 | /**
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415 | * Implements validator to check for more than one condition.
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416 | */
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417 | |||
418 | public static class CompositeValidator implements Validator { |
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419 | private Validator[] validators; |
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420 | |||
421 | public CompositeValidator(Validator[] validators) { |
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422 | this.validators = validators;
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423 | } |
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424 | |||
425 | public boolean isValid(String text) { |
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426 | for (int i = 0; i < validators.length; i++) { |
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427 | if (!validators[i].isValid(text)) {
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428 | return false; |
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429 | } |
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430 | } |
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431 | |||
432 | return true; |
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433 | } |
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434 | } |
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435 | |||
436 | public static class CompositeCleaner implements Cleaner { |
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437 | private Cleaner[] cleaners; |
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438 | |||
439 | public CompositeCleaner(Cleaner[] cleaners) { |
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440 | this.cleaners = cleaners;
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441 | } |
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442 | |||
443 | public String clean(String text) { |
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444 | String result = text;
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445 | 7053 | caballero | try{
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446 | for (int i = 0; i < cleaners.length; i++) { |
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447 | result = cleaners[i].clean(result); |
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448 | } |
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449 | }catch (NumberFormatException e) { |
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450 | JOptionPane.showMessageDialog((Component)PluginServices.getMainFrame(),PluginServices.getText(this,"numero_incorrecto")); |
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451 | } |
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452 | 312 | fernando | |
453 | 7053 | caballero | |
454 | 312 | fernando | return result;
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455 | } |
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456 | } |
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457 | } |