hydrograph.ui.propertywindow.widgets.customwidgets.databasecomponents.ModifyListenerForDBComp.java Source code

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Here is the source code for hydrograph.ui.propertywindow.widgets.customwidgets.databasecomponents.ModifyListenerForDBComp.java

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/*******************************************************************************
 * Copyright 2017 Capital One Services, LLC and Bitwise, Inc.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package hydrograph.ui.propertywindow.widgets.customwidgets.databasecomponents;

import java.math.BigInteger;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.lang.StringUtils;
import org.eclipse.jface.fieldassist.ControlDecoration;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.widgets.Text;

import hydrograph.ui.common.util.Constants;
import hydrograph.ui.common.util.CustomColorRegistry;
import hydrograph.ui.common.util.ParameterUtil;
import hydrograph.ui.propertywindow.messages.Messages;

/**
 * ModifyListenerForDBComp validate numeric fields and compare the fields
 * @author Bitwise
 *
 */
public class ModifyListenerForDBComp implements ModifyListener {
    private Text lowerBoundText;
    private Text upperBoundText;
    private ControlDecoration lowerBoundTextDecorator;
    private ControlDecoration upperBoundTextDecorator;

    public ModifyListenerForDBComp(Text upperBoundText, Text lowerBoundText,
            ControlDecoration lowerBoundTextDecorator, ControlDecoration upperBoundTextDecorator) {
        this.lowerBoundText = lowerBoundText;
        this.upperBoundText = upperBoundText;
        this.lowerBoundTextDecorator = lowerBoundTextDecorator;
        this.upperBoundTextDecorator = upperBoundTextDecorator;
    }

    @Override
    public void modifyText(ModifyEvent event) {
        if (event.getSource() == lowerBoundText) {
            validate(lowerBoundText, upperBoundText, lowerBoundTextDecorator, upperBoundTextDecorator,
                    lowerBoundText.getText(), upperBoundText.getText());
        } else {
            validate(upperBoundText, lowerBoundText, upperBoundTextDecorator, lowerBoundTextDecorator,
                    lowerBoundText.getText(), upperBoundText.getText());
        }
    }

    private void validate(Text text1, Text text2, ControlDecoration text1Decorator,
            ControlDecoration text2Decorator, String lowerValue, String upperValue) {
        if (validateNumericField(text1.getText())) {
            text1Decorator.hide();
            if (StringUtils.isNotBlank(text2.getText()) && validateNumericField(text2.getText())) {
                if (compareBigIntegerValue(upperValue, lowerValue) == -1) {
                    text1Decorator.show();
                    text1Decorator.setDescriptionText(Messages.UPPER_LOWER_BOUND_ERROR);
                } else {
                    text1Decorator.hide();
                    text2Decorator.hide();
                }
            }
        } else {
            text1Decorator.show();
            text1.setBackground(CustomColorRegistry.INSTANCE.getColorFromRegistry(255, 255, 255));
            text1Decorator.setDescriptionText(Messages.DB_NUMERIC_PARAMETERZIATION_ERROR);
            validateFieldWithParameter(text1.getText(), text1Decorator);
            validateFieldWithParameter(text2.getText(), text2Decorator);
        }
    }

    /**
     * The Function will compare bigInteger values
     * @param value1
     * @param value2
     * @return
     */
    private int compareBigIntegerValue(String value1, String value2) {
        BigInteger int1 = BigInteger.valueOf(Long.parseLong(value1));
        BigInteger int2 = BigInteger.valueOf(Long.parseLong(value2));

        return int1.compareTo(int2);
    }

    /**
     * The Function used to validate parameter field 
     * @param text
     * @param txtDecorator
     */
    private void validateFieldWithParameter(String text, ControlDecoration txtDecorator) {
        if (StringUtils.isNotBlank(text)) {
            if (ParameterUtil.isParameter(text) || validateNumericField(text)) {
                txtDecorator.hide();
            } else {
                txtDecorator.show();
                txtDecorator.setDescriptionText(Messages.DB_NUMERIC_PARAMETERZIATION_ERROR);

            }
        }
    }

    /**
     * The Function used to validate the field & field should be positive integer
     * @param text
     * @param text1Decorator
     * @return
     */
    private boolean validateNumericField(String text) {
        if (StringUtils.isNotBlank(text)) {
            Matcher matchs = Pattern.compile(Constants.NUMERIC_REGEX).matcher(text);
            if (matchs.matches()) {
                return true;
            }
        }
        return false;
    }
}