eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/section/campanula/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.section.campanula;
  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.element.CdmFormFactory;
  19 import eu.etaxonomy.taxeditor.ui.element.CdmPropertyChangeEvent;
  20 import eu.etaxonomy.taxeditor.ui.element.ICdmFormElement;
  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 initialInteger a {@link java.lang.Integer} object.
  40      * @param style a int.
  41      */
  42     public NumberFieldController(Text controlledText, CdmFormFactory formFactory, ICdmFormElement parentElement, Integer initialInteger){
  43         super(controlledText, formFactory, parentElement, null, null);
  44         //WindowBuilder exception handling
  45         if(initialInteger==null){
  46             initialInteger = 0;
  47         }
  48         setInteger(initialInteger);
  49     }
  50
  51     /**
  52      * <p>Constructor for NumberWithLabelElement.</p>
  53      *
  54      * @param toolkit a {@link eu.etaxonomy.taxeditor.ui.element.CdmFormFactory} object.
  55      * @param parentElement a {@link eu.etaxonomy.taxeditor.ui.element.ICdmFormElement} object.
  56      * @param labelString a {@link java.lang.String} object.
  57      * @param initialFloat a {@link java.lang.Float} object.
  58      * @param style a int.
  59      * @wbp.parser.constructor
  60      */
  61     public NumberFieldController(Text controlledText, CdmFormFactory formFactory,
  62             ICdmFormElement parentElement, Float initialFloat) {
  63         super(controlledText, formFactory, parentElement, null, null);
  64         //WindowBuilder exception handling
  65         if(initialFloat==null){
  66             initialFloat = 0f;
  67         }
  68         setFloat(initialFloat);
  69     }
  70
  71     /**
  72      * <p>setInteger</p>
  73      *
  74      * @param number a {@link java.lang.Integer} object.
  75      */
  76     public void setInteger(Integer number) {
  77         super.setText(getStringRepresentation(number));
  78     }
  79
  80     /**
  81      * <p>setFloat</p>
  82      *
  83      * @param number a {@link java.lang.Float} object.
  84      */
  85     public void setFloat(Float number) {
  86         super.setText(getStringRepresentation(number));
  87     }
  88
  89     /**
  90      * <p>getInteger</p>
  91      *
  92      * @return a {@link java.lang.Integer} object.
  93      */
  94     public Integer getInteger() {
  95         String text = super.getText().trim();
  96         return text.equals("") ? 0 : new Integer(text);
  97     }
  98
  99     /**
 100      * <p>getFloat</p>
 101      *
 102      * @return a {@link java.lang.Float} object.
 103      */
 104     public Float getFloat(){
 105         String text = super.getText();
 106         return new Float(text);
 107     }
 108
 109     private String getStringRepresentation(Object number){
 110         if(number != null){
 111             return number.toString();
 112         }
 113         return null;
 114     }
 115
 116     /* (non-Javadoc)
 117      * @see eu.etaxonomy.taxeditor.forms.AbstractCdmFormElement#propertyChange(org.eclipse.jface.util.PropertyChangeEvent)
 118      */
 119     /** {@inheritDoc} */
 120     @Override
 121     public void modifyText(ModifyEvent event) {
 122         String value = text.getText();
 123         if(CdmUtils.isEmpty(value)){
 124             text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
 125             return;
 126         }
 127
 128         try{
 129
 130             Float number = Float.parseFloat(value);
 131
 132             if((start != null && number < start) || (end != null && number > end)){
 133                 throw new NumberFormatException("You entered a number that is not within the allowed bounds.");
 134             }
 135
 136         }catch(NumberFormatException e){
 137             text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_RED));
 138             firePropertyChangeEvent(new CdmPropertyChangeEvent(this, e));
 139             exception = e;
 140             return;
 141         }
 142
 143         exception = null;
 144         text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
 145
 146         super.modifyText(event);
 147     }
 148
 149     /**
 150      * <p>setLimits</p>
 151      *
 152      * @param numberOfDigits a int.
 153      * @param start a {@link java.lang.Integer} object.
 154      * @param end a {@link java.lang.Integer} object.
 155      */
 156     public void setLimits(int numberOfDigits, Integer start, Integer end){
 157         setLimits(numberOfDigits, start.floatValue(), end.floatValue());
 158     }
 159
 160     /**
 161      * <p>setLimits</p>
 162      *
 163      * @param numberOfDigits a int.
 164      * @param start a {@link java.lang.Float} object.
 165      * @param end a {@link java.lang.Float} object.
 166      */
 167     public void setLimits(int numberOfDigits, Float start, Float end){
 168         text.setTextLimit(numberOfDigits);
 169         this.start = start;
 170         this.end = end;
 171     }
 172
 173     /**
 174      * <p>Getter for the field <code>exception</code>.</p>
 175      *
 176      * @return the exception
 177      */
 178     public NumberFormatException getException() {
 179         return exception;
 180     }
 181 }