org.activiti.designer.property.extension.util.ExtensionPropertyUtil.java Source code

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Here is the source code for org.activiti.designer.property.extension.util.ExtensionPropertyUtil.java

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/* 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 org.activiti.designer.property.extension.util;

import org.activiti.designer.integration.servicetask.PropertyType;
import org.activiti.designer.property.custom.PeriodPropertyElement;
import org.apache.commons.lang.StringUtils;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Spinner;

/**
 * Provides utilities for extension property editing.
 * 
 * @author Tiese Barrell
 * @since 0.6.1
 * @version 1
 */
public final class ExtensionPropertyUtil {

    private ExtensionPropertyUtil() {

    }

    /**
     * Inspects the provided parent component and extracts the value for the
     * {@link PropertyType#PERIOD} enclosed.
     * 
     * @param parent
     *          the parent component
     */
    public static final String getPeriodValueFromParent(final Composite parent) {

        String[] values = new String[PeriodPropertyElement.values().length];

        for (final Control control : parent.getChildren()) {
            if (control instanceof Spinner) {
                final String periodKey = (String) control.getData("PERIOD_KEY");
                final PeriodPropertyElement element = PeriodPropertyElement.byShortFormat(periodKey);

                if (element != null) {
                    final int elementValue = ((Spinner) control).getSelection();
                    final String elementStringValue = elementValue + element.getShortFormat();
                    values[element.getOrder()] = elementStringValue;
                }
            }
        }

        final StringBuilder builder = new StringBuilder();
        for (int i = 0; i < values.length; i++) {
            builder.append(values[i]);
            if (i != values.length - 1) {
                builder.append(" ");
            }
        }
        String value = builder.toString();
        return value;
    }

    /**
     * Inspects the provided value and extracts the value for the
     * {@link PeriodPropertyElement} provided.
     * 
     * @param parent
     *          the parent component
     */
    public static final int getPeriodPropertyElementFromValue(final String value,
            final PeriodPropertyElement propertyElement) {

        int result = 0;
        final String[] elementValues = value.split(" ");

        if (propertyElement != null) {
            final String stripped = StringUtils.substringBeforeLast(elementValues[propertyElement.getOrder()],
                    propertyElement.getShortFormat());
            result = Integer.parseInt(stripped);
        }
        return result;
    }
}