eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/element/NumberWithLabelElementComposite.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.element;
  11
  12 import org.eclipse.swt.SWT;
  13 import org.eclipse.swt.events.ModifyEvent;
  14 import org.eclipse.swt.widgets.Composite;
  15 import org.eclipse.swt.widgets.Display;
  16 import org.eclipse.ui.forms.widgets.FormToolkit;
  17
  18 import eu.etaxonomy.cdm.common.CdmUtils;
  19
  20 /**
  21  * @author pplitzner
  22  * @date 31.07.2013
  23  *
  24  */
  25 public class NumberWithLabelElementComposite extends TextWithLabelComposite{
  26
  27     private Float start;
  28     private Float end;
  29
  30     private NumberFormatException exception;
  31
  32     /**
  33      * <p>Constructor for NumberWithLabelElement.</p>
  34      *
  35      * @param toolkit a {@link eu.etaxonomy.taxeditor.ui.element.CdmFormFactory} object.
  36      * @param parentElement a {@link eu.etaxonomy.taxeditor.ui.element.ICdmFormElement} object.
  37      * @param labelString a {@link java.lang.String} object.
  38      * @param initialInteger a {@link java.lang.Integer} object.
  39      * @param style a int.
  40      */
  41     public NumberWithLabelElementComposite(Composite parent, FormToolkit formFactory, ICdmFormElement parentFormElement,
  42             String labelString, Integer initialInteger, int style){
  43         this(parent, formFactory, parentFormElement, labelString, new Float(initialInteger), style);
  44     }
  45
  46     /**
  47      * <p>Constructor for NumberWithLabelElement.</p>
  48      *
  49      * @param toolkit a {@link eu.etaxonomy.taxeditor.ui.element.CdmFormFactory} object.
  50      * @param parentElement a {@link eu.etaxonomy.taxeditor.ui.element.ICdmFormElement} object.
  51      * @param labelString a {@link java.lang.String} object.
  52      * @param initialFloat a {@link java.lang.Float} object.
  53      * @param style a int.
  54      * @wbp.parser.constructor
  55      */
  56     public NumberWithLabelElementComposite(Composite parent, FormToolkit formFactory,
  57             ICdmFormElement parentElement, String labelString,
  58             Float initialFloat, int style) {
  59         super(parent, formFactory, parentElement, labelString, null, null, style);
  60         setFloat(initialFloat);
  61     }
  62
  63     /**
  64      * <p>setInteger</p>
  65      *
  66      * @param number a {@link java.lang.Integer} object.
  67      */
  68     public void setInteger(Integer number) {
  69         super.setText(getStringRepresentation(number));
  70     }
  71
  72     /**
  73      * <p>setFloat</p>
  74      *
  75      * @param number a {@link java.lang.Float} object.
  76      */
  77     public void setFloat(Float number) {
  78         super.setText(getStringRepresentation(number));
  79     }
  80
  81     /**
  82      * <p>getInteger</p>
  83      *
  84      * @return a {@link java.lang.Integer} object.
  85      */
  86     public Integer getInteger() {
  87         String text = super.getText().trim();
  88         return text.equals("") ? 0 : new Integer(text);
  89     }
  90
  91     /**
  92      * <p>getFloat</p>
  93      *
  94      * @return a {@link java.lang.Float} object.
  95      */
  96     public Float getFloat(){
  97         String text = super.getText();
  98         return new Float(text);
  99     }
 100
 101     private String getStringRepresentation(Object number){
 102         if(number != null){
 103             return number.toString();
 104         }
 105         return null;
 106     }
 107
 108     /* (non-Javadoc)
 109      * @see eu.etaxonomy.taxeditor.forms.AbstractCdmFormElement#propertyChange(org.eclipse.jface.util.PropertyChangeEvent)
 110      */
 111     /** {@inheritDoc} */
 112     @Override
 113     public void modifyText(ModifyEvent event) {
 114         String value = text.getText();
 115         if(CdmUtils.isEmpty(value)){
 116             text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
 117             return;
 118         }
 119
 120         try{
 121
 122             Float number = Float.parseFloat(value);
 123
 124             if((start != null && number < start) || (end != null && number > end)){
 125                 throw new NumberFormatException("You entered a number that is not within the allowed bounds.");
 126             }
 127
 128         }catch(NumberFormatException e){
 129             text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_RED));
 130             firePropertyChangeEvent(new CdmPropertyChangeEvent(this, e));
 131             exception = e;
 132             return;
 133         }
 134
 135         exception = null;
 136         text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
 137
 138         super.modifyText(event);
 139     }
 140
 141     /**
 142      * <p>setLimits</p>
 143      *
 144      * @param numberOfDigits a int.
 145      * @param start a {@link java.lang.Integer} object.
 146      * @param end a {@link java.lang.Integer} object.
 147      */
 148     public void setLimits(int numberOfDigits, Integer start, Integer end){
 149         setLimits(numberOfDigits, start.floatValue(), end.floatValue());
 150     }
 151
 152     /**
 153      * <p>setLimits</p>
 154      *
 155      * @param numberOfDigits a int.
 156      * @param start a {@link java.lang.Float} object.
 157      * @param end a {@link java.lang.Float} object.
 158      */
 159     public void setLimits(int numberOfDigits, Float start, Float end){
 160         text.setTextLimit(numberOfDigits);
 161         this.start = start;
 162         this.end = end;
 163     }
 164
 165     /**
 166      * <p>Getter for the field <code>exception</code>.</p>
 167      *
 168      * @return the exception
 169      */
 170     public NumberFormatException getException() {
 171         return exception;
 172     }
 173 }