eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/campanula/basicFields/NumberFieldController.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2013 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 package eu.etaxonomy.taxeditor.ui.campanula.basicFields;
  11
  12 import org.eclipse.swt.SWT;
  13 import org.eclipse.swt.events.ModifyEvent;
  14 import org.eclipse.swt.widgets.Display;
  15 import org.eclipse.swt.widgets.Text;
  16
  17 import eu.etaxonomy.cdm.common.CdmUtils;
  18 import eu.etaxonomy.taxeditor.ui.campanula.compatibility.ICdmFormElement;
  19 import eu.etaxonomy.taxeditor.ui.element.CdmFormFactory;
  20 import eu.etaxonomy.taxeditor.ui.element.CdmPropertyChangeEvent;
  21
  22 /**
  23  * @author pplitzner
  24  * @date 12.08.2013
  25  *
  26  */
  27 public class NumberFieldController extends TextFieldController {
  28     private Float start;
  29     private Float end;
  30
  31     private NumberFormatException exception;
  32
  33     /**
  34      * <p>Constructor for NumberWithLabelElement.</p>
  35      *
  36      * @param toolkit a {@link eu.etaxonomy.taxeditor.ui.element.CdmFormFactory} object.
  37      * @param parentElement a {@link eu.etaxonomy.taxeditor.ui.element.ICdmFormElement} object.
  38      * @param labelString a {@link java.lang.String} object.
  39      * @param initialNumber a {@link java.lang.Integer} object.
  40      * @param style a int.
  41      */
  42     public NumberFieldController(Text controlledText, CdmFormFactory formFactory, ICdmFormElement parentElement, Number initialNumber){
  43         super(controlledText, formFactory, parentElement, null, null);
  44         //WindowBuilder exception handling
  45         if(initialNumber==null){
  46             initialNumber = 0;
  47         }
  48         setNumber(initialNumber);
  49     }
  50
  51     /**
  52      * <p>setInteger</p>
  53      *
  54      * @param number a {@link java.lang.Integer} object.
  55      */
  56     public void setInteger(Integer number) {
  57         super.setText(getStringRepresentation(number));
  58     }
  59
  60     /**
  61          * <p>setNumber</p>
  62      *
  63          * @param number a {@link java.lang.Number} object.
  64      */
  65         public void setNumber(Number number) {
  66         super.setText(getStringRepresentation(number));
  67     }
  68
  69     /**
  70      * <p>getInteger</p>
  71      *
  72      * @return a {@link java.lang.Integer} object.
  73      */
  74     public Integer getInteger() {
  75         String text = super.getText().trim();
  76         return text.equals("") ? 0 : new Integer(text);
  77     }
  78
  79     /**
  80      * <p>getFloat</p>
  81      *
  82      * @return a {@link java.lang.Float} object.
  83      */
  84     public Float getFloat(){
  85         String text = super.getText();
  86         return new Float(text);
  87     }
  88
  89         /**
  90          * <p>getDouble</p>
  91          *
  92          * @return a {@link java.lang.Float} object.
  93          */
  94         public Double getDouble(){
  95                 String text = super.getText();
  96                 return new Double(text);
  97         }
  98
  99     private String getStringRepresentation(Object number){
 100         if(number != null){
 101             return number.toString();
 102         }
 103         return null;
 104     }
 105
 106     /* (non-Javadoc)
 107      * @see eu.etaxonomy.taxeditor.forms.AbstractCdmFormElement#propertyChange(org.eclipse.jface.util.PropertyChangeEvent)
 108      */
 109     /** {@inheritDoc} */
 110     @Override
 111     public void modifyText(ModifyEvent event) {
 112         String value = text.getText();
 113         if(CdmUtils.isEmpty(value)){
 114             text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
 115             return;
 116         }
 117
 118         try{
 119
 120             Float number = Float.parseFloat(value);
 121
 122             if((start != null && number < start) || (end != null && number > end)){
 123                 throw new NumberFormatException("You entered a number that is not within the allowed bounds.");
 124             }
 125
 126         }catch(NumberFormatException e){
 127             text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_RED));
 128             firePropertyChangeEvent(new CdmPropertyChangeEvent(this, e));
 129             exception = e;
 130             return;
 131         }
 132
 133         exception = null;
 134         text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
 135
 136         super.modifyText(event);
 137     }
 138
 139     /**
 140      * <p>setLimits</p>
 141      *
 142      * @param numberOfDigits a int.
 143      * @param start a {@link java.lang.Integer} object.
 144      * @param end a {@link java.lang.Integer} object.
 145      */
 146     public void setLimits(int numberOfDigits, Integer start, Integer end){
 147         setLimits(numberOfDigits, start.floatValue(), end.floatValue());
 148     }
 149
 150     /**
 151      * <p>setLimits</p>
 152      *
 153      * @param numberOfDigits a int.
 154      * @param start a {@link java.lang.Float} object.
 155      * @param end a {@link java.lang.Float} object.
 156      */
 157     public void setLimits(int numberOfDigits, Float start, Float end){
 158         text.setTextLimit(numberOfDigits);
 159         this.start = start;
 160         this.end = end;
 161     }
 162
 163     /**
 164      * <p>Getter for the field <code>exception</code>.</p>
 165      *
 166      * @return the exception
 167      */
 168     public NumberFormatException getException() {
 169         return exception;
 170     }
 171 }