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/**
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* Copyright (C) 2020 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.ui.element;
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import java.math.BigDecimal;
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import org.apache.commons.lang3.StringUtils;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.events.ModifyEvent;
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import org.eclipse.swt.widgets.Display;
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/**
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* @author k.luther
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* @since May 27, 2020
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*/
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public class BigDecimalWithLabelElement extends NumberWithLabelElement {
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public BigDecimalWithLabelElement(CdmFormFactory toolkit, ICdmFormElement parentElement, String labelString,
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Number initialNumber, int style) {
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super(toolkit, parentElement, labelString, initialNumber, style);
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}
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private BigDecimal start;
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private BigDecimal end;
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@Override
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public void modifyText(ModifyEvent event) {
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String value = text.getText();
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if(StringUtils.isBlank(value)){
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text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
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super.modifyText(event);
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return;
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}
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try{
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String pattern = "-?\\d{0,9}(.\\d{0,9})?";
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if (value.matches(pattern)){
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if ("-".equals(value)){
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//accept entry
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}else{
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BigDecimal number = new BigDecimal(value);
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if((start != null && number.compareTo(start) < 0 || (end != null && number.compareTo(end) > 0))){
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exception = new NumberFormatException("You entered a number that is not within the allowed bounds.");
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throw exception;
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}
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}
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}else{
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exception = new NumberFormatException("You entered a number that is not within the allowed bounds.");
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throw exception;
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}
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}catch(NumberFormatException e){
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text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_RED));
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firePropertyChangeEvent(new CdmPropertyChangeEvent(this, event));
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exception = e;
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return;
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}
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exception = null;
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text.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
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super.modifyText(event);
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}
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/**
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* <p>setLimits</p>
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*
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* @param numberOfDigits a int.
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* @param start a {@link java.lang.Integer} object.
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* @param end a {@link java.lang.Integer} object.
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*/
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public void setLimits(int numberOfDigits, BigDecimal start, BigDecimal end){
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text.setTextLimit(numberOfDigits);
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this.start = start;
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this.end = end;
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}
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public BigDecimal getBigDecimal(){
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String text = super.getText();
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if (StringUtils.isBlank(text) || "-".equals(text)){
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return null;
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}
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try {
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return new BigDecimal(text);
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} catch (NumberFormatException e) {
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exception = e;
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return null;
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}
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}
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}
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