com.automaster.autoview.server.servlet.TableHeader.java Source code

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Here is the source code for com.automaster.autoview.server.servlet.TableHeader.java

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/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package com.automaster.autoview.server.servlet;

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.ExceptionConverter;
import com.itextpdf.text.Image;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.ColumnText;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfPageEventHelper;
import com.itextpdf.text.pdf.PdfTemplate;
import com.itextpdf.text.pdf.PdfWriter;

/**
 *
 * @author Adriano
 */
class TableHeader extends PdfPageEventHelper {
    /** The header text. */
    String header;
    /** The template with the total number of pages. */
    PdfTemplate total;

    /**
     * Allows us to change the content of the header.
     * @param header The new header String
     */
    public void setHeader(String header) {
        this.header = header;
    }

    /**
     * Creates the PdfTemplate that will hold the total number of pages.
     * @see com.itextpdf.text.pdf.PdfPageEventHelper#onOpenDocument(
     *      com.itextpdf.text.pdf.PdfWriter, com.itextpdf.text.Document)
     */
    public void onOpenDocument(PdfWriter writer, Document document) {
        total = writer.getDirectContent().createTemplate(30, 16);
    }

    /**
     * Adds a header to every page
     * @see com.itextpdf.text.pdf.PdfPageEventHelper#onEndPage(
     *      com.itextpdf.text.pdf.PdfWriter, com.itextpdf.text.Document)
     */
    public void onEndPage(PdfWriter writer, Document document) {
        PdfPTable table = new PdfPTable(3);
        try {
            table.setWidths(new int[] { 24, 24, 2 });
            table.setTotalWidth(527);
            table.setLockedWidth(true);
            table.getDefaultCell().setFixedHeight(20);
            table.getDefaultCell().setBorder(Rectangle.BOTTOM);
            table.addCell(header);
            table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_RIGHT);
            table.addCell(String.format("Pgina %d de", writer.getPageNumber()));
            PdfPCell cell = new PdfPCell(Image.getInstance(total));
            cell.setBorder(Rectangle.BOTTOM);
            table.addCell(cell);
            table.writeSelectedRows(0, -1, 34, 803, writer.getDirectContent());
        } catch (DocumentException de) {
            throw new ExceptionConverter(de);
        }
    }

    /**
     * Fills out the total number of pages before the document is closed.
     * @see com.itextpdf.text.pdf.PdfPageEventHelper#onCloseDocument(
     *      com.itextpdf.text.pdf.PdfWriter, com.itextpdf.text.Document)
     */
    public void onCloseDocument(PdfWriter writer, Document document) {
        ColumnText.showTextAligned(total, Element.ALIGN_LEFT,
                new Phrase(String.valueOf(writer.getPageNumber() - 1)), 2, 2, 0);
    }
}