org.webguitoolkit.ui.util.export.PDFEvent.java Source code

Introduction

Here is the source code for org.webguitoolkit.ui.util.export.PDFEvent.java

Source

/*
Copyright 2008 Endress+Hauser Infoserve GmbH&Co KG 
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.webguitoolkit.ui.util.export;

/**
 * (c) 2009, Endress&Hauser InfoServe GmbH & Co KG
 * Created on 07.10.2008
 */

import java.net.URL;
import java.text.DateFormat;
import java.util.Date;

import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.webguitoolkit.ui.controls.table.Table;
import org.webguitoolkit.ui.controls.util.TextService;

import com.lowagie.text.Document;
import com.lowagie.text.Element;
import com.lowagie.text.ExceptionConverter;
import com.lowagie.text.Image;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfPTable;
import com.lowagie.text.pdf.PdfPageEventHelper;
import com.lowagie.text.pdf.PdfWriter;

/**
 * @author & Lars Brler
 * 
 */
public class PDFEvent extends PdfPageEventHelper {

    private static final Logger logger = Logger.getLogger(PDFEvent.class);
    private Table wgtTable;

    public PDFEvent() {
        super();
    }

    public PDFEvent(Table wgtTable) {
        super();
        this.wgtTable = wgtTable;
    }

    public void onEndPage(PdfWriter writer, Document document) {
        TableExportOptions exportOptions = wgtTable.getExportOptions();
        try {
            Rectangle page = document.getPageSize();
            if (exportOptions.isShowDefaultHeader() || StringUtils.isNotEmpty(exportOptions.getHeaderImage())) {
                PdfPTable head = new PdfPTable(3);
                head.getDefaultCell().setBorder(Rectangle.NO_BORDER);
                Paragraph title = new Paragraph(wgtTable.getTitle());
                title.setAlignment(Element.ALIGN_LEFT);
                head.addCell(title);

                Paragraph empty = new Paragraph("");
                head.addCell(empty);
                if (StringUtils.isNotEmpty(exportOptions.getHeaderImage())) {
                    try {
                        URL absoluteFileUrl = wgtTable.getPage().getClass()
                                .getResource("/" + exportOptions.getHeaderImage());
                        if (absoluteFileUrl != null) {
                            String path = absoluteFileUrl.getPath();
                            Image jpg = Image.getInstance(path);
                            jpg.scaleAbsoluteHeight(40);
                            jpg.scaleAbsoluteWidth(200);
                            head.addCell(jpg);
                        }
                    } catch (Exception e) {
                        logger.error(e.getMessage());
                        Paragraph noImage = new Paragraph("Image not found!");
                        head.addCell(noImage);
                    }
                } else {
                    head.addCell(empty);
                }
                head.setTotalWidth(page.getWidth() - document.leftMargin() - document.rightMargin());
                head.writeSelectedRows(0, -1, document.leftMargin(),
                        page.getHeight() - document.topMargin() + head.getTotalHeight(), writer.getDirectContent());
            }

            if (exportOptions.isShowDefaultFooter() || StringUtils.isNotEmpty(exportOptions.getFooterText())
                    || exportOptions.isShowPageNumber()) {
                PdfPTable foot = new PdfPTable(3);
                String footerText = exportOptions.getFooterText() != null ? exportOptions.getFooterText() : "";

                if (!exportOptions.isShowDefaultFooter()) {
                    foot.addCell(new Paragraph(footerText));
                    foot.addCell(new Paragraph(""));
                } else {
                    foot.getDefaultCell().setBorder(Rectangle.NO_BORDER);
                    String leftText = "";
                    if (StringUtils.isNotEmpty(exportOptions.getFooterText())) {
                        leftText = exportOptions.getFooterText();
                    }
                    Paragraph left = new Paragraph(leftText);
                    left.setAlignment(Element.ALIGN_LEFT);
                    foot.addCell(left);

                    DateFormat df = DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.MEDIUM,
                            TextService.getLocale());
                    Date today = new Date();
                    String date = df.format(today);
                    Paragraph center = new Paragraph(date);
                    center.setAlignment(Element.ALIGN_CENTER);
                    foot.addCell(center);
                }

                if (exportOptions.isShowPageNumber()) {
                    Paragraph right = new Paragraph(
                            TextService.getString("pdf.page@Page:") + " " + writer.getPageNumber());
                    right.setAlignment(Element.ALIGN_LEFT);
                    foot.addCell(right);

                    foot.setTotalWidth(page.getWidth() - document.leftMargin() - document.rightMargin());
                    foot.writeSelectedRows(0, -1, document.leftMargin(), document.bottomMargin(),
                            writer.getDirectContent());
                } else {
                    foot.addCell(new Paragraph(""));
                }
            }
        } catch (Exception e) {
            throw new ExceptionConverter(e);
        }
    }

    public void onOpenDocument(PdfWriter writer, Document document) {
    }

    public void onCloseDocument(PdfWriter writer, Document document) {
    }

    public void onStartPage(PdfWriter writer, Document document) {
    }

    public void onParagraph(PdfWriter writer, Document document, float paragraphPosition) {
    }

    public void onParagraphEnd(PdfWriter writer, Document document, float paragraphPosition) {
    }

    public void onChapter(PdfWriter writer, Document document, float paragraphPosition, Paragraph title) {
    }

    public void onChapterEnd(PdfWriter writer, Document document, float paragraphPosition) {
    }

    public void onSection(PdfWriter writer, Document document, float paragraphPosition, int depth,
            Paragraph title) {
    }

    public void onSectionEnd(PdfWriter writer, Document document, float paragraphPosition) {
    }

    public void onGenericTag(PdfWriter writer, Document document, Rectangle rect, String text) {
    }

}