wutil.java

Java写的ERP系统

	 *  @return Clear Frame Script
	 */
	public static script getClearFrame (String target)
	{
		StringBuffer cmd = new StringBuffer();
		cmd.append("var d = parent.").append(target).append(".document;\n");
		cmd.append("d.open();\n");
		cmd.append("d.write('<link href=\"").append(WEnv.getStylesheetURL()).append("\" rel=\"stylesheet\">');\n");
		cmd.append("d.close();");
		//
		return new script(cmd.toString());
	}   //  getClearFrame


	/**
	 * 	Return a link and script with new location
	 * 	@param url forward url
	 * 	@return html
	 */
	public static HtmlCode getForward (String url)
	{
		HtmlCode retValue = new HtmlCode();
		//	Link
		a a = new a(url);
		a.addElement(url);
		retValue.addElement(a);
		//	Java Script	- document.location
		script script = new script("window.top.location.replace('" + url + "');");
		retValue.addElement(script);
		//
		return retValue;
	}	//	getForward

	/**
	 * 	Create Forward Page
	 * 	@param response response
	 * 	@param title page title
	 * 	@param forwardURL url
	 * 	@throws ServletException
	 * 	@throws IOException
	 */
	public static void createForwardPage (HttpServletResponse response,
		String title, String forwardURL) throws ServletException, IOException
	{
		response.setContentType("text/html; charset=UTF-8");
		WDoc doc = WDoc.create(title);
		doc.getBody().addElement(WUtil.getForward(forwardURL));
		PrintWriter out = response.getWriter();
		doc.output(out);
		out.flush();
		if (out.checkError())
			s_log.error("createForwardPage - error writing");
		out.close();
	}	//	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;
		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)
		{
			s_log.warn ("isEmailValid - " + 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)
		{
			s_log.error("propertiesEncode-store", e);
		}
		String result = new String (bos.toByteArray());
	//	System.out.println("String=" + result);
		String enc = "UTF-8";
		try
		{
			result = java.net.URLEncoder.encode(result, enc);
		}
		catch (UnsupportedEncodingException e)
		{
			s_log.error("propertiesEncode-encode-" + enc, e);
			enc = System.getProperty("file.encoding");      //  Windows default is Cp1252
			try
			{
				result = java.net.URLEncoder.encode(result, enc);
			}
			catch (Exception ex)
			{
				s_log.error("propertiesEncode-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);
		String enc = "UTF-8";
		try
		{
			result = java.net.URLDecoder.decode(data, enc);
		}
		catch (UnsupportedEncodingException e)
		{
			s_log.error("propertiesDecode-decode-" + enc, e);
			enc = System.getProperty("file.encoding");      //  Windows default is Cp1252
			try
			{
				result = java.net.URLEncoder.encode(data, enc);
			}
			catch (Exception ex)
			{
				s_log.error("propertiesDecode-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)
		{
			s_log.error("propertiesDecode-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
			retValue[i] = new option(list[i].getID()).addElement(list[i].getName());

			//  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

}   //  WUtil