taxeditor-store/src/main/java/eu/etaxonomy/taxeditor/ui/forms/NumberWithLabelElement.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2007 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10
  11 package eu.etaxonomy.taxeditor.ui.forms;
  12
  13 import org.eclipse.swt.SWT;
  14 import org.eclipse.swt.events.ModifyEvent;
  15 import org.eclipse.swt.widgets.Display;
  16
  17 import eu.etaxonomy.cdm.common.CdmUtils;
  18
  19
  20 /**
  21  * <p>NumberWithLabelElement class.</p>
  22  *
  23  * @author n.hoffmann
  24  * @created Mar 22, 2010
  25  * @version 1.0
  26  */
  27 public class NumberWithLabelElement extends TextWithLabelElement {
  28
  29         private Float start;
  30         private Float end;
  31
  32         private NumberFormatException exception;
  33
  34         /**
  35          * <p>Constructor for NumberWithLabelElement.</p>
  36          *
  37          * @param toolkit a {@link eu.etaxonomy.taxeditor.ui.forms.CdmFormFactory} object.
  38          * @param parentElement a {@link eu.etaxonomy.taxeditor.ui.forms.ICdmFormElement} object.
  39          * @param labelString a {@link java.lang.String} object.
  40          * @param initialInteger a {@link java.lang.Integer} object.
  41          * @param style a int.
  42          */
  43         public NumberWithLabelElement(CdmFormFactory toolkit,
  44                         ICdmFormElement parentElement, String labelString,
  45                         Integer initialInteger, int style) {
  46                 super(toolkit, parentElement, labelString, null, null, style);
  47                 setInteger(initialInteger);
  48         }
  49
  50         /**
  51          * <p>Constructor for NumberWithLabelElement.</p>
  52          *
  53          * @param toolkit a {@link eu.etaxonomy.taxeditor.ui.forms.CdmFormFactory} object.
  54          * @param parentElement a {@link eu.etaxonomy.taxeditor.ui.forms.ICdmFormElement} object.
  55          * @param labelString a {@link java.lang.String} object.
  56          * @param initialFloat a {@link java.lang.Float} object.
  57          * @param style a int.
  58          */
  59         public NumberWithLabelElement(CdmFormFactory toolkit,
  60                         ICdmFormElement parentElement, String labelString,
  61                         Float initialFloat, int style) {
  62                 super(toolkit, parentElement, labelString, null, null, style);
  63                 setFloat(initialFloat);
  64         }
  65
  66         /**
  67          * <p>setInteger</p>
  68          *
  69          * @param number a {@link java.lang.Integer} object.
  70          */
  71         public void setInteger(Integer number) {
  72                 super.setText(getStringRepresentation(number));
  73         }
  74
  75         /**
  76          * <p>setFloat</p>
  77          *
  78          * @param number a {@link java.lang.Float} object.
  79          */
  80         public void setFloat(Float number) {
  81                 super.setText(getStringRepresentation(number));
  82         }
  83
  84         /**
  85          * <p>getInteger</p>
  86          *
  87          * @return a {@link java.lang.Integer} object.
  88          */
  89         public Integer getInteger() {
  90                 String text = super.getText().trim();
  91                 return text.equals("") ? 0 : new Integer(text);
  92         }
  93
  94         /**
  95          * <p>getFloat</p>
  96          *
  97          * @return a {@link java.lang.Float} object.
  98          */
  99         public Float getFloat(){
 100                 String text = super.getText();
 101                 return new Float(text);
 102         }
 103
 104         private String getStringRepresentation(Object number){
 105                 if(number != null){
 106                         return number.toString();
 107                 }
 108                 return null;
 109         }
 110
 111         /* (non-Javadoc)
 112          * @see eu.etaxonomy.taxeditor.forms.AbstractCdmFormElement#propertyChange(org.eclipse.jface.util.PropertyChangeEvent)
 113          */
 114         /** {@inheritDoc} */
 115         @Override
 116         public void modifyText(ModifyEvent event) {
 117                 String value = text.getText();
 118                 if(CdmUtils.isEmpty(value)){
 119                         text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
 120                         return;
 121                 }
 122
 123                 try{
 124
 125                         Float number = Float.parseFloat(value);
 126
 127                         if((start != null && number < start) || (end != null && number > end)){
 128                                 throw new NumberFormatException("You entered a number that is not within the allowed bounds.");
 129                         }
 130
 131                 }catch(NumberFormatException e){
 132                         text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_RED));
 133                         firePropertyChangeEvent(new CdmPropertyChangeEvent(this, e));
 134                         return;
 135                 }
 136
 137                 exception = null;
 138                 text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
 139
 140                 super.modifyText(event);
 141         }
 142
 143         /**
 144          * <p>setLimits</p>
 145          *
 146          * @param numberOfDigits a int.
 147          * @param start a {@link java.lang.Integer} object.
 148          * @param end a {@link java.lang.Integer} object.
 149          */
 150         public void setLimits(int numberOfDigits, Integer start, Integer end){
 151                 setLimits(numberOfDigits, start.floatValue(), end.floatValue());
 152         }
 153
 154         /**
 155          * <p>setLimits</p>
 156          *
 157          * @param numberOfDigits a int.
 158          * @param start a {@link java.lang.Float} object.
 159          * @param end a {@link java.lang.Float} object.
 160          */
 161         public void setLimits(int numberOfDigits, Float start, Float end){
 162                 text.setTextLimit(numberOfDigits);
 163                 this.start = start;
 164                 this.end = end;
 165         }
 166
 167         /**
 168          * <p>Getter for the field <code>exception</code>.</p>
 169          *
 170          * @return the exception
 171          */
 172         public NumberFormatException getException() {
 173                 return exception;
 174         }
 175 }