com.lapis.jsfexporter.pdf.PDFExportType.java Source code

Introduction

Here is the source code for com.lapis.jsfexporter.pdf.PDFExportType.java

Source

/*
 * #%L
 * Lapis JSF Exporter - PDF export type
 * %%
 * Copyright (C) 2013 - 2015 Lapis Software Associates
 * %%
 * 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.
 * #L%
 */
package com.lapis.jsfexporter.pdf;

import java.io.ByteArrayOutputStream;

import javax.faces.context.ExternalContext;

import com.lapis.jsfexporter.api.IExportCell;
import com.lapis.jsfexporter.api.IExportRow;
import com.lapis.jsfexporter.api.IExportType;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Font;
import com.lowagie.text.FontFactory;
import com.lowagie.text.Phrase;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.PdfPCell;
import com.lowagie.text.pdf.PdfPTable;
import com.lowagie.text.pdf.PdfWriter;

public class PDFExportType implements IExportType<Document, Void, Integer> {

    private Document document;
    private PdfPTable table;
    private Font font;
    private int rowCount;
    private ByteArrayOutputStream buffer;

    public PDFExportType() {
        document = new Document();
        font = FontFactory.getFont("fonts/DroidSansFallbackFull.ttf", BaseFont.IDENTITY_H, true);
        buffer = new ByteArrayOutputStream();
        try {
            PdfWriter.getInstance(document, buffer);
        } catch (DocumentException e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public Document getContext() {
        return document;
    }

    @Override
    public void beginExport(int columnCount) {
        table = new PdfPTable(columnCount);
        if (!document.isOpen()) {
            document.open();
        }
    }

    @Override
    public Integer exportRow(IExportRow row) {
        for (IExportCell cell : row.getCells()) {
            PdfPCell pdfCell = new PdfPCell();
            pdfCell.setColspan(cell.getColumnSpanCount());
            pdfCell.setRowspan(cell.getRowSpanCount());
            pdfCell.setPhrase(new Phrase(cell.getValue(), font));
            table.addCell(pdfCell);
        }

        return rowCount++;
    }

    @Override
    public void endExport() {
        try {
            document.add(table);
        } catch (DocumentException e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public void writeExport(ExternalContext externalContext) throws Exception {
        document.close();
        buffer.writeTo(externalContext.getResponseOutputStream());
    }

    @Override
    public String getContentType() {
        return "application/pdf";
    }

    @Override
    public String getFileExtension() {
        return "pdf";
    }

}