exportcsvtag.java

exTreme taglib的使用

/*
 * Copyright 2004 original author or authors.
 *
 * 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.extremecomponents.table.tag;

import org.apache.commons.lang.StringUtils;
import org.extremecomponents.table.bean.Attributes;
import org.extremecomponents.table.bean.Export;
import org.extremecomponents.table.handler.ExportHandler;
import org.extremecomponents.table.view.CsvView;

/**
 * @jsp.tag name="exportCsv" display-name="ExportCsvTag" body-content="JSP"
 *          description="Export data for a csv view."
 * 
 * @author Jeff Johnston
 */
public class ExportCsvTag extends ExportTag {
    private String delimiter;

    /**
     * @jsp.attribute description="What to use as the file delimiter. The
     *                default is a comma." required="false" rtexprvalue="true"
     */
    public String getDelimiter() {
        return TagUtils.evaluateExpressionAsString("delimiter", delimiter, this, pageContext);
    }

    public void setDelimiter(String delimiter) {
        this.delimiter = delimiter;
    }

    public void addExtendedAttributes(Attributes attributes) {
        String view = attributes.getAttributeAsString(Export.VIEW);
        if (StringUtils.isBlank(view)) {
            attributes.addAttribute(Export.VIEW, ExportHandler.CSV);
            attributes.addAttribute(Export.IMAGE_NAME, ExportHandler.CSV);
        }
        attributes.addAttribute(CsvView.DELIMITER, getDelimiter());
    }

    public void release() {
        delimiter = null;
        super.release();
    }
}