208 lines
6.7 KiB
Java
208 lines
6.7 KiB
Java
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/* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2003 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "Apache" and "Apache Software Foundation" and
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* "Apache POI" must not be used to endorse or promote products
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* derived from this software without prior written permission. For
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* written permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache",
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* "Apache POI", nor may "Apache" appear in their name, without
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* prior written permission of the Apache Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*/
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package org.apache.poi.hssf.contrib.view;
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import java.awt.*;
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import java.awt.event.*;
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import java.net.*;
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import java.applet.*;
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import java.io.*;
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import javax.swing.*;
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import org.apache.poi.hssf.usermodel.HSSFWorkbook;
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import org.apache.poi.hssf.usermodel.HSSFSheet;
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import org.apache.poi.hssf.usermodel.HSSFCell;
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/**
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* Sheet Viewer - Views XLS files via HSSF. Can be used as an applet with
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* filename="" or as a applications (pass the filename as the first parameter).
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* Or you can pass it a URL in a "url" parameter when run as an applet or just
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* that first parameter must start with http:// and it will guess its a url. I
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* only tested it as an applet though, so it probably won't work...you fix it.
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*
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* @author Andrew C. Oliver
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* @author Jason Height
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*/
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public class SViewer extends JApplet {
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private SViewerPanel panel;
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boolean isStandalone = false;
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String filename = null;
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/**Get a parameter value*/
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public String getParameter(String key, String def) {
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return isStandalone ? System.getProperty(key, def) :
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(getParameter(key) != null ? getParameter(key) : def);
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}
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/**Construct the applet*/
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public SViewer() {
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}
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/**Initialize the applet*/
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public void init() {
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try {
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jbInit();
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}
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catch(Exception e) {
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e.printStackTrace();
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System.exit(1);
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}
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}
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/**Component initialization*/
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private void jbInit() throws Exception {
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InputStream i = null;
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boolean isurl = false;
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if (filename == null) filename = getParameter("filename");
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if (filename == null || filename.substring(0,7).equals("http://")) {
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isurl = true;
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if (filename == null) filename = getParameter("url");
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i = getXLSFromURL(filename);
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}
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HSSFWorkbook wb = null;
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if (isurl) {
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wb = constructWorkbook(i);
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} else {
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wb = constructWorkbook(filename);
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}
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panel = new SViewerPanel(wb, false);
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getContentPane().setLayout(new BorderLayout());
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getContentPane().add(panel, BorderLayout.CENTER);
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}
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private HSSFWorkbook constructWorkbook(String filename) throws FileNotFoundException, IOException {
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HSSFWorkbook wb = null;
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FileInputStream in = new FileInputStream(filename);
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wb = new HSSFWorkbook(in);
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in.close();
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return wb;
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}
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private HSSFWorkbook constructWorkbook(InputStream in) throws IOException {
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HSSFWorkbook wb = null;
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wb = new HSSFWorkbook(in);
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in.close();
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return wb;
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}
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/**Start the applet*/
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public void start() {
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}
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/**Stop the applet*/
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public void stop() {
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}
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/**Destroy the applet*/
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public void destroy() {
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}
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/**Get Applet information*/
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public String getAppletInfo() {
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return "Applet Information";
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}
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/**Get parameter info*/
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public String[][] getParameterInfo() {
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return null;
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}
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/**
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* opens a url and returns an inputstream
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*
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*/
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private InputStream getXLSFromURL(String urlstring) throws MalformedURLException, IOException {
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URL url = new URL(urlstring);
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URLConnection uc = url.openConnection();
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String field = uc.getHeaderField(0);
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for (int i=0;field != null; i++) {
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System.out.println(field);
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field = uc.getHeaderField(i);
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}
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BufferedInputStream is = new BufferedInputStream(uc.getInputStream());
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return is;
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}
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/**Main method*/
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public static void main(String[] args) {
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SViewer applet = new SViewer();
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applet.isStandalone = true;
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applet.filename = args[0];
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Frame frame;
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frame = new Frame() {
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protected void processWindowEvent(WindowEvent e) {
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super.processWindowEvent(e);
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if (e.getID() == WindowEvent.WINDOW_CLOSING) {
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System.exit(0);
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}
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}
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public synchronized void setTitle(String title) {
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super.setTitle(title);
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enableEvents(AWTEvent.WINDOW_EVENT_MASK);
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}
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};
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frame.setTitle("Applet Frame");
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frame.add(applet, BorderLayout.CENTER);
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applet.init();
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applet.start();
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frame.setSize(400,320);
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Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
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frame.setLocation((d.width - frame.getSize().width) / 2, (d.height - frame.getSize().height) / 2);
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frame.setVisible(true);
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}
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}
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