eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/element/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.element;
  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 import eu.etaxonomy.taxeditor.ui.campanula.compatibility.ICdmFormElement;
  19
  20
  21 /**
  22  * <p>NumberWithLabelElement class.</p>
  23  *
  24  * @author n.hoffmann
  25  * @created Mar 22, 2010
  26  * @version 1.0
  27  */
  28 public class NumberWithLabelElement extends TextWithLabelElement {
  29
  30         private Float start;
  31         private Float end;
  32
  33         private NumberFormatException exception;
  34
  35         /**
  36          * <p>Constructor for NumberWithLabelElement.</p>
  37          *
  38          * @param toolkit a {@link eu.etaxonomy.taxeditor.ui.element.CdmFormFactory} object.
  39          * @param parentElement a {@link eu.etaxonomy.taxeditor.ui.element.ICdmFormElement} object.
  40          * @param labelString a {@link java.lang.String} object.
  41          * @param initialNumber a {@link java.lang.Number} object.
  42          * @param style a int.
  43          */
  44         public NumberWithLabelElement(CdmFormFactory toolkit,
  45                         ICdmFormElement parentElement, String labelString,
  46                         Number initialNumber, int style) {
  47                 super(toolkit, parentElement, labelString, null, null, style);
  48                 setNumber(initialNumber);
  49         }
  50
  51
  52         /**
  53          * <p>setNumber</p>
  54          *
  55          * @param number a {@link java.lang.Number} object.
  56          */
  57         public void setNumber(Number number) {
  58                 super.setText(getStringRepresentation(number));
  59         }
  60
  61         /**
  62          * <p>getInteger</p>
  63          *
  64          * @return a {@link java.lang.Integer} object.
  65          */
  66         public Integer getInteger() {
  67                 String text = super.getText().trim();
  68                 return text.equals("") ? 0 : new Integer(text);
  69         }
  70
  71         /**
  72          * <p>getFloat</p>
  73          *
  74          * @return a {@link java.lang.Float} object.
  75          */
  76         public Float getFloat(){
  77                 String text = super.getText();
  78                 return new Float(text);
  79         }
  80
  81         /**
  82          * <p>getDouble</p>
  83          *
  84          * @return a {@link java.lang.Float} object.
  85          */
  86         public Double getDouble(){
  87                 String text = super.getText();
  88                 return new Double(text);
  89         }
  90
  91         private String getStringRepresentation(Object number){
  92                 if(number != null){
  93                         return number.toString();
  94                 }
  95                 return null;
  96         }
  97
  98         /* (non-Javadoc)
  99          * @see eu.etaxonomy.taxeditor.forms.AbstractCdmFormElement#propertyChange(org.eclipse.jface.util.PropertyChangeEvent)
 100          */
 101         /** {@inheritDoc} */
 102         @Override
 103         public void modifyText(ModifyEvent event) {
 104                 String value = text.getText();
 105                 if(CdmUtils.isEmpty(value)){
 106                         text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
 107                         return;
 108                 }
 109
 110                 try{
 111
 112                         Float number = Float.parseFloat(value);
 113
 114                         if((start != null && number < start) || (end != null && number > end)){
 115                                 throw new NumberFormatException("You entered a number that is not within the allowed bounds.");
 116                         }
 117
 118                 }catch(NumberFormatException e){
 119                         text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_RED));
 120                         firePropertyChangeEvent(new CdmPropertyChangeEvent(this, e));
 121                         exception = e;
 122                         return;
 123                 }
 124
 125                 exception = null;
 126                 text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
 127
 128                 super.modifyText(event);
 129         }
 130
 131         /**
 132          * <p>setLimits</p>
 133          *
 134          * @param numberOfDigits a int.
 135          * @param start a {@link java.lang.Integer} object.
 136          * @param end a {@link java.lang.Integer} object.
 137          */
 138         public void setLimits(int numberOfDigits, Integer start, Integer end){
 139                 setLimits(numberOfDigits, start.floatValue(), end.floatValue());
 140         }
 141
 142         /**
 143          * <p>setLimits</p>
 144          *
 145          * @param numberOfDigits a int.
 146          * @param start a {@link java.lang.Float} object.
 147          * @param end a {@link java.lang.Float} object.
 148          */
 149         public void setLimits(int numberOfDigits, Float start, Float end){
 150                 text.setTextLimit(numberOfDigits);
 151                 this.start = start;
 152                 this.end = end;
 153         }
 154
 155         /**
 156          * <p>Getter for the field <code>exception</code>.</p>
 157          *
 158          * @return the exception
 159          */
 160         public NumberFormatException getException() {
 161                 return exception;
 162         }
 163 }