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From Apache Wiki <wikidi...@apache.org>
Subject [Tapestry Wiki] Update of "Tapestry5OutputLocaleNumber" by MarcusVeloso
Date Sat, 03 Nov 2007 20:09:21 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Tapestry Wiki" for change notification.

The following page has been changed by MarcusVeloso:
http://wiki.apache.org/tapestry/Tapestry5OutputLocaleNumber

The comment on the change is:
  

------------------------------------------------------------------------------
- Creating a new component for formatting numbers and dates according to locale, using literals
(date, integer, decimal or currency). It's based on Output component.
+ A component to display formatted numbers and dates according to locale, using literals (integer,
decimal, currency, date e date(MM/yyyy)). It's based on Tapestry Output component.
  
- === MyOutput.java ===
+ === OutputLocale.java ===
  {{{
  import java.text.DateFormat;
  import java.text.DecimalFormat;
@@ -10, +10 @@

  import java.text.NumberFormat;
  import java.text.SimpleDateFormat;
  import java.util.Date;
- import java.util.Locale;
  
  import org.apache.tapestry.ComponentResources;
  import org.apache.tapestry.MarkupWriter;
@@ -21, +20 @@

  import org.apache.tapestry.ioc.services.ThreadLocale;
  
  /** component that formats a value and outputs it. */
- public class MyOutput {
+ public class OutputLocale {
  	@Parameter(required = true)
  	private Object _value;
  
@@ -33, +32 @@

  
  	@Inject
  	private ComponentResources _resources;
- 
+ 	
  	@Inject
+ 	private RequestGlobals _requestGlobals;
- 	@Service("ThreadLocale")
- 	private ThreadLocale _threadLocale;
  
  	boolean beginRender(MarkupWriter writer) throws Exception {
  		String formatted = null;
  
- 		if (_format instanceof String) {
+ 		if (_format instanceof String) 
+ 		{
- 			if (_format.toString().equalsIgnoreCase("integer"))
+ 			if (_format.toString().equalsIgnoreCase("integer")) // Syntax: format="literal:integer"
  
  				formatted = integer().format(_value);
  
- 			else if (_format.toString().equalsIgnoreCase("decimal"))
+ 			else if (_format.toString().equalsIgnoreCase("decimal")) // Syntax: format="literal:decimal"
  
  				formatted = decimal().format(_value);
  
- 			else if (_format.toString().equalsIgnoreCase("currency"))
+ 			else if (_format.toString().equalsIgnoreCase("currency")) // Syntax: format="literal:currency"
  
  				formatted = currency().format(_value);
  
- 			else if (_format.toString().substring(0, 4)
- 					.equalsIgnoreCase("date"))
+ 			// Null date.
+ 			else if (_format.toString().substring(0, 4).equalsIgnoreCase("date") && _value
== null)
+ 				formatted = "";
+ 
+ 			else if (_format.toString().substring(0, 4).equalsIgnoreCase("date")) 	// Syntax: format="literal:date"
or format="literal:date(MM/dd/yyyy)"
  
  				if (_format.toString().indexOf('(') >= 0) {
  
- 					if (_format.toString().indexOf(')') < 0)
+ 					if ((_format.toString().indexOf(')') < 0) ||
- 						throw new Exception(
- 								"Closing parenthesis does not exists");
- 					if (_format.toString().indexOf(')') < _format.toString().indexOf('(')
+ 						(_format.toString().indexOf(')') < _format.toString().indexOf('(')
- 							|| _format.toString().indexOf(')') != _format.toString().length() - 1)
+ 						|| _format.toString().indexOf(')') != _format.toString().length() - 1))
- 						throw new Exception("Syntax error! The correct syntax is format=\"literal:date\" or
format=\"literal:date(stringPattern)\"");
- 
- 					formatted = formatDate((Date) _value, _format.toString().substring(_format.toString().indexOf('(')
+ 1,	_format.toString().indexOf(')')));
+ 						formatted = "?literal:"+_format.toString()+"?"; 
+ 					else {
+ 						try {
+ 							formatted = formatDate((Date) _value, _format.toString().substring(
+ 								_format.toString().indexOf('(') + 1, 
+ 								_format.toString().indexOf(')')));
+ 						}
+ 						catch (Exception e) {
+ 							formatted = "?literal:"+_format.toString()+"?"; }
+ 					}
  
  				} else {
  					if (_format.toString().length() > 4)
- 						throw new Exception("Syntax error! The correct syntax is format=\"literal:date\" or
format=\"literal:date(stringPattern)\"");
- 
+ 						formatted = "?literal:"+_format.toString()+"?";
+ 					else
- 					formatted = date().format(_value);
+ 						formatted = date().format(_value);
- 
  				}
  
  			else
- 
- 				throw new Exception("Unknown literal format");
+ 				
+ 				formatted = "?literal:"+_format.toString()+"?";  // Unknown literal format.
  		}
  
  		else {
@@ -102, +108 @@

  		return false;
  	}
  
- 	private Locale _localeDefault = _threadLocale.getLocale().getDefault();
- 
  	public NumberFormat integer() {
- 		NumberFormat fmt = NumberFormat.getInstance(_localeDefault);
+ 		NumberFormat fmt = NumberFormat.getInstance(
+ 			_requestGlobals.getRequest().getLocale());
  		fmt.setMaximumFractionDigits(0);
  		return fmt;
  	}
  
  	public DecimalFormat decimal() {
- 		return (DecimalFormat) NumberFormat.getInstance(_localeDefault);
+ 		return (DecimalFormat) NumberFormat.getInstance(
+ 			_requestGlobals.getRequest().getLocale());
  	}
  
  	public DecimalFormat currency() {
- 		DecimalFormat fmt = (DecimalFormat) NumberFormat.getCurrencyInstance(_localeDefault);
+ 		DecimalFormat fmt = (DecimalFormat) NumberFormat.getCurrencyInstance(
+ 			_requestGlobals.getRequest().getLocale());
  		fmt.setDecimalSeparatorAlwaysShown(true);
  		fmt.setMaximumFractionDigits(2);
  		fmt.setMinimumFractionDigits(2);
@@ -124, +131 @@

  
  	public DateFormat date() {
  		return (DateFormat) DateFormat.getDateInstance(DateFormat.MEDIUM,
- 				_localeDefault);
+ 			_requestGlobals.getRequest().getLocale());
  	}
  
  	public String formatDate(Date d, String pattern) {
- 		SimpleDateFormat sdf = new SimpleDateFormat(pattern, _localeDefault);
+ 		SimpleDateFormat sdf = new SimpleDateFormat(pattern, 
+ 			_requestGlobals.getRequest().getLocale());
- 		return (d==null?"":sdf.format(d));
+ 		return sdf.format(d);
  	}
  
  }
  }}}
  
  [[BR]]
- Done. Now we need some page for test, something like:
+ Testing...
  
- === TestOutputLocaleNumber.java ===
+ === TestOutputLocale.java ===
  {{{
  package org.example.hilo.pages;
  
- public class TestOutputLocaleNumber
+ public class TestOutputLocale
  {
  	private float _valor=12345.6789f;
  
@@ -159, +167 @@

  }
  }}}
  
- === TestOutputLocaleNumber.html ===
+ === TestOutputLocale.tml ===
  {{{
  <html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd">
  	<head>
- 		<title>Output Locale Number</title>
+ 		<title>Output Locale</title>
  	</head>
  
  	<body>
@@ -179, +187 @@

  			${valor}</p>
  
  		<p>using format="literal:integer" results<br/>
- 			<span t:type="MyOutput" value="valor" format="literal:integer"/></p>
+ 			<span t:type="OutputLocale" value="valor" format="literal:integer"/></p>
  
  		<p>using format="literal:decimal" results<br/>
- 			<span t:type="MyOutput" value="valor" format="literal:decimal"/></p>
+ 			<span t:type="OutputLocale" value="valor" format="literal:decimal"/></p>
  
  		<p>using format="literal:currency" results<br/>
- 			<span t:type="MyOutput" value="valor" format="literal:currency"/></p>
+ 			<span t:type="OutputLocale" value="valor" format="literal:currency"/></p>
  
                  <p>using format="literal:date" results<br/>
- 			<span t:type="MyOutput" value="someDate" format="literal:date"/></p>
+ 			<span t:type="OutputLocale" value="someDate" format="literal:date"/></p>
  
                  <p>using format="literal:date(yyyy-MM-dd)" results<br/>
- 			<span t:type="MyOutput" value="someDate" format="literal:date(yyyy-MM-dd)"/></p>
+ 			<span t:type="OutputLocale" value="someDate" format="literal:date(yyyy-MM-dd)"/></p>
  
  		<p>using format="someFormat" acts exactly like in Output component</p>
  
@@ -203, +211 @@

  }}}
  
  [[BR]]
- As you can see here, we can extend components and learn a little more about Tapestry 5.
Thank you Howard!
+ We can extend components and learn a little bit about Tapestry 5. Thank you Howard!
+ [[BR]][[BR]]
+ Marcus Veloso
  [[BR]]
  

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