webutil.java

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			cookie.setComment("(c) ComPiere, Inc - Jorg Janke");
			cookie.setSecure(false);
			cookie.setPath("/");
			if (cookieProperties.size() == 0)
				cookie.setMaxAge(0);            //  delete cookie
			else
				cookie.setMaxAge(2592000);      //  30 days in seconds   60*60*24*30
			response.addCookie(cookie);
		}
		//  add diagnostics
		if (debug && WebEnv.DEBUG)
		{
		//	doc.output(System.out);
			WebEnv.addFooter(request, response, servlet, doc.getBody());
		//	doc.output(System.out);
		}
	//	String content = doc.toString();
	//  response.setContentLength(content.length());    //  causes problems at the end of the output

		//  print document
		PrintWriter out = response.getWriter();     //  with character encoding support
		doc.output(out);
		out.flush();
		if (out.checkError())
			log.log(Level.SEVERE, "error writing");
		//  binary output (is faster but does not do character set conversion)
	//	OutputStream out = response.getOutputStream();
	//	byte[] data = doc.toString().getBytes();
	//	response.setContentLength(data.length);
	//	out.write(doc.toString().getBytes());
		//
		out.close();
	}   //  createResponse

	
	/**************************************************************************
	 *  Create Java Script to clear Target frame
	 *
	 *  @param targetFrame target frame
	 *  @return Clear Frame Script
	 */
	public static script getClearFrame (String targetFrame)
	{
		StringBuffer cmd = new StringBuffer();
		cmd.append("<!-- clear frame\n")
			.append("var d = parent.").append(targetFrame).append(".document;\n")
			.append("d.open();\n")
			.append("d.write('<link href=\"").append(WebEnv.getStylesheetURL()).append("\" rel=\"stylesheet\">');\n")
			.append("d.close();\n")
			.append("// -- clear frame -->");
		//
		return new script(cmd.toString());
	}   //  getClearFrame


	/**
	 * 	Return a link and script with new location.
	 * 	@param url forward url
	 * 	@param delaySec delay in seconds (default 3)
	 * 	@return html
	 */
	public static HtmlCode getForward (String url, int delaySec)
	{
		if (delaySec <= 0)
			delaySec = 3;
		HtmlCode retValue = new HtmlCode();
		//	Link
		a a = new a(url);
		a.addElement(url);
		retValue.addElement(a);
		//	Java Script	- document.location - 
		script script = new script("setTimeout(\"window.top.location.replace('" + url 
			+ "')\"," + (delaySec+1000) + ");");
		retValue.addElement(script);
		//
		return retValue;
	}	//	getForward

	/**
	 * 	Create Forward Page
	 * 	@param response response
	 * 	@param title page title
	 * 	@param forwardURL url
	 * 	@param delaySec delay in seconds (default 3)
	 * 	@throws ServletException
	 * 	@throws IOException
	 */
	public static void createForwardPage (HttpServletResponse response,
		String title, String forwardURL, int delaySec) throws ServletException, IOException
	{
		response.setContentType("text/html; charset=UTF-8");
		WebDoc doc = WebDoc.create(title);
		body b = doc.getBody();
		b.addElement(getForward(forwardURL, delaySec));
		PrintWriter out = response.getWriter();
		doc.output(out);
		out.flush();
		if (out.checkError())
			log.log(Level.SEVERE, "Error writing");
		out.close();
		log.fine(forwardURL + " - " + title);
	}	//	createForwardPage


	/**
	 * 	Does Test exist
	 *	@param test string
	 *	@return true if String with data
	 */
	public static boolean exists (String test)
	{
		if (test == null)
			return false;
		return test.length() > 0;
	}	//	exists

	/**
	 * 	Does Parameter exist
	 * 	@param request request
	 *	@param parameter string
	 *	@return true if String with data
	 */
	public static boolean exists (HttpServletRequest request, String parameter)
	{
		if (request == null || parameter == null)
			return false;
		try
		{
			String enc = request.getCharacterEncoding();
			if (enc == null)
				request.setCharacterEncoding(WebEnv.ENCODING);
		}
		catch (Exception e)
		{
			log.log(Level.SEVERE, "Set CharacterEncoding=" + WebEnv.ENCODING, e);
		}
		return exists (request.getParameter(parameter));
	}	//	exists


	/**
	 *	Is EMail address valid
	 * 	@param email mail address
	 * 	@return true if valid
	 */
	public static boolean isEmailValid (String email)
	{
		if (email == null || email.length () == 0)
			return false;
		try
		{
			InternetAddress ia = new InternetAddress (email, true);
			return true;
		}
		catch (AddressException ex)
		{
			log.warning (email + " - "
				+ ex.getLocalizedMessage ());
		}
		return false;
	}	//	isEmailValid


	/**************************************************************************
	 *  Decode Properties into String (URL encoded)
	 *
	 *  @param pp properties
	 *  @return Encoded String
	 */
	public static String propertiesEncode (Properties pp)
	{
		ByteArrayOutputStream bos = new ByteArrayOutputStream();
		try
		{
			pp.store(bos, "Compiere");   //  Header
		}
		catch (IOException e)
		{
			log.log(Level.SEVERE, "store", e);
		}
		String result = new String (bos.toByteArray());
	//	System.out.println("String=" + result);
		try
		{
			result = URLEncoder.encode(result, WebEnv.ENCODING);
		}
		catch (UnsupportedEncodingException e)
		{
			log.log(Level.SEVERE, "encode" + WebEnv.ENCODING, e);
			String enc = System.getProperty("file.encoding");      //  Windows default is Cp1252
			try
			{
				result = URLEncoder.encode(result, enc);
				log.info("encode: " + enc);
			}
			catch (Exception ex)
			{
				log.log(Level.SEVERE, "encode", ex);
			}
		}
	//	System.out.println("String-Encoded=" + result);
		return result;
	}   //  propertiesEncode

	/**
	 *  Decode data String (URL encoded) into Properties
	 *
	 *  @param data data
	 *  @return Properties
	 */
	public static Properties propertiesDecode (String data)
	{
		String result = null;
	//	System.out.println("String=" + data);
		try
		{
			result = URLDecoder.decode(data, WebEnv.ENCODING);
		}
		catch (UnsupportedEncodingException e)
		{
			log.log(Level.SEVERE, "decode" + WebEnv.ENCODING, e);
			String enc = System.getProperty("file.encoding");      //  Windows default is Cp1252
			try
			{
				result = URLEncoder.encode(data, enc);
				log.log(Level.SEVERE, "decode: " + enc);
			}
			catch (Exception ex)
			{
				log.log(Level.SEVERE, "decode", ex);
			}
		}
	//	System.out.println("String-Decoded=" + result);

		ByteArrayInputStream bis = new ByteArrayInputStream(result.getBytes());
		Properties pp = new Properties();
		try
		{
			pp.load(bis);
		}
		catch (IOException e)
		{
			log.log(Level.SEVERE, "load", e);
		}
		return pp;
	}   //  propertiesDecode

	
	/**************************************************************************
	 *  Convert Array of NamePair to HTTP Option Array.
	 *  <p>
	 *  If the ArrayList does not contain NamePairs, the String value is used
	 *  @see org.compiere.util.NamePair
	 *  @param  list    ArrayList containing NamePair values
	 *  @param  default_ID  Sets the default if the key/ID value is found.
	 *      If the value is null or empty, the first value is selected
	 *  @return Option Array
	 */
	public static option[] convertToOption (NamePair[] list, String default_ID)
	{
		int size = list.length;
		option[] retValue = new option[size];
		for (int i = 0; i < size; i++)
		{
			boolean selected = false;
			//  select first entry
			if (i == 0 && (default_ID == null || default_ID.length() == 0))
				selected = true;

			//  Create option
			String name = Util.maskHTML(list[i].getName());
			retValue[i] = new option(list[i].getID()).addElement(name);

			//  Select if ID/Key is same as default ID
			if (default_ID != null && default_ID.equals(list[i].getID()))
				selected = true;
			retValue[i].setSelected(selected);
		}
		return retValue;
	}   //  convertToOption

	
	/**
	 *  Create label/field table row
	 *
	 *  @param line - null for new line (table row)
	 *  @param FORMNAME form name
	 *  @param PARAMETER parameter name
	 *  @param labelText label
	 *  @param inputType HTML input type
	 *  @param value data value
	 *  @param sizeDisplay display size
	 *  @param size data size
	 *  @param longField field spanning two columns
	 *  @param mandatory mark as mandatory
	 *  @param onChange onChange call
	 *  @param script script
	 *  @return tr table row
	 */
	static public tr createField (tr line, String FORMNAME, String PARAMETER,
		String labelText, String inputType, Object value,
		int sizeDisplay, int size, boolean longField, 
		boolean mandatory, String onChange, StringBuffer script)
	{
		if (line == null)
			line = new tr();
		String labelInfo = labelText;
		if (mandatory)
		{
			labelInfo += "&nbsp;<font color=\"red\">*</font>";
			String fName = "document." + FORMNAME + "." + PARAMETER;
			script.append(fName).append(".required=true; ");
		}

		label llabel = new label().setFor(PARAMETER).addElement(labelInfo);
		llabel.setID("ID_" + PARAMETER + "_Label");
	//	label.setTitle(description);
		line.addElement(new td().addElement(llabel).setAlign(AlignType.RIGHT));
		input iinput = new input(inputType, PARAMETER, value == null ? "" : value.toString());
		iinput.setSize(sizeDisplay).setMaxlength(size);
		iinput.setID("ID_" + PARAMETER);
		if (onChange != null && onChange.length() > 0)
			iinput.setOnChange(onChange);
		iinput.setTitle(labelText);
		td field = new td().addElement(iinput).setAlign(AlignType.LEFT);
		if (longField)
			field.setColSpan(3);
		line.addElement(field);
		return line;
	}   //  addField

	/**
	 * 	Get Close PopUp Buton
	 *	@return button
	 */
	public static input createClosePopupButton()
	{
		input close = new input (input.TYPE_BUTTON, "closePopup", "Close");
		close.setTitle ("Close PopUp");	//	Help
		close.setOnClick ("closePopup();return false;");
		return close;
	}	//	getClosePopupButton
	
	
	/**
	 * 	Stream Attachment Entry
	 *	@param response response
	 *	@param attachment attachment
	 *	@param attachmentIndex logical index
	 *	@return error message or null
	 */
	public static String streamAttachment (HttpServletResponse response, 
		MAttachment attachment, int attachmentIndex)
	{
		if (attachment == null)
			return "No Attachment";
		
		int realIndex = -1;
		MAttachmentEntry[] entries = attachment.getEntries();
		for (int i = 0; i < entries.length; i++)
		{
			MAttachmentEntry entry = entries[i];
			if (entry.getIndex() == attachmentIndex)
			{
				realIndex = i;
				break;
			}
		}
		if (realIndex < 0)
		{
			log.fine("No Attachment Entry for Index=" 
				+ attachmentIndex + " - " + attachment);
			return "Attachment Entry not found";
		}
		
		MAttachmentEntry entry = entries[realIndex];
		if (entry.getData() == null)
		{
			log.fine("Empty Attachment Entry for Index=" 
				+ attachmentIndex + " - " + attachment);
			return "Attachment Entry empty";
		}
		
		//	Stream Attachment Entry
		try
		{
			int bufferSize = 2048; //	2k Buffer
			int fileLength = entry.getData().length;
			//
			response.setContentType(entry.getContentType());
			response.setBufferSize(bufferSize);
			response.setContentLength(fileLength);
			//
			log.fine(entry.toString());
			long time = System.currentTimeMillis();		//	timer start
			//
			ServletOutputStream out = response.getOutputStream ();
			out.write (entry.getData());
			out.flush();
			out.close();
			//
			time = System.currentTimeMillis() - time;
			double speed = (fileLength/1024) / ((double)time/1000);
			log.info("Length=" 
				+ fileLength + " - " 
				+ time + " ms - " 
				+ speed + " kB/sec - " + entry.getContentType());
		}
		catch (IOException ex)
		{
			log.log(Level.SEVERE, ex.toString());
			return "Streaming error - " + ex;
		}
		return null;
	}	//	streamAttachment

	
	/**
	 * 	Stream File
	 *	@param response response
	 *	@param file file to stream
	 *	@return error message or null
	 */
	public static String streamFile (HttpServletResponse response, File file)
	{
		if (file == null)
			return "No File";
		if (!file.exists())
			return "File not found: " + file.getAbsolutePath();
		
		MimeType mimeType = MimeType.get(file.getAbsolutePath());
		//	Stream File
		try
		{
			int bufferSize = 2048; //	2k Buffer
			int fileLength = (int)file.length();
			//
			response.setContentType(mimeType.getMimeType());
			response.setBufferSize(bufferSize);
			response.setContentLength(fileLength);
			//
			log.fine(file.toString());
			long time = System.currentTimeMillis();		//	timer start
			//	Get Data
			FileInputStream in = new FileInputStream(file);
			ServletOutputStream out = response.getOutputStream ();
			int c = 0;
			while ((c = in.read()) != -1)
				out.write(c);
			//
			out.flush();
			out.close();
			in.close();
			//
			time = System.currentTimeMillis() - time;
			double speed = (fileLength/1024) / ((double)time/1000);
			log.info("Length=" 
				+ fileLength + " - " 
				+ time + " ms - " 
				+ speed + " kB/sec - " + mimeType);
		}
		catch (IOException ex)
		{
			log.log(Level.SEVERE, ex.toString());
			return "Streaming error - " + ex;
		}
		return null;
	}	//	streamFile
	
}   //  WUtil