Formatting functions for GWT client side (Ext GWT)
/*
* Ext GWT - Ext for GWT
* Copyright(c) 2007-2009, Ext JS, LLC.
* licensing@extjs.com
*
* http://extjs.com/license
*/
//package com.extjs.gxt.ui.client.util;
import java.util.Iterator;
import java.util.Map;
/**
* Formatting functions.
*/
public class Format {
public static native String camelize(String s)/*-{
return (s.match(/\-/gi) ? s.toLowerCase().replace(/\-(\w)/gi, function(a, c){return c.toUpperCase();}) : s);
}-*/;
public static String capitalize(String value) {
return value == null ? value : value.substring(0, 1).toUpperCase() + value.substring(1).toLowerCase();
}
/**
* Truncate a string and add an ellipsis ('...') to the end if it exceeds the
* specified length.
*
* @param value the string to truncate
* @param len the maximum length to allow before truncating
* @return the converted text
*/
public static String ellipse(String value, int len) {
if (value != null && value.length() > len) {
return value.substring(0, len - 3) + "...";
}
return value;
}
public static native String escape(String s)/*-{
return s.replace(/('|\\)/g, "\\$1");
}-*/;
public static String fileSize(int size) {
if (size < 1024) {
return size + " bytes";
} else if (size < 1048576) {
return (Math.round(((size * 10) / 1024)) / 10) + " KB";
} else {
return (Math.round(((size * 10) / 1048576)) / 10) + " MB";
}
}
public static String htmlDecode(String value) {
return value == null ? value
: value.replace("&", "&").replace(">", ">").replace("<", "<").replace(""", "\"");
}
public static String htmlEncode(String value) {
return value == null ? value
: value.replace("&", "&").replace(">", ">").replace("<", "<").replace("\"", """);
}
public static native String hyphenize(String name) /*-{
return name.replace(/([A-Z])/g, "-$1" ).toLowerCase();
}-*/;
public static native String stripScripts(String v) /*-{
return !v ? v : String(v).replace(/(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)/ig, "");
}-*/;
public static native String stripTags(String v) /*-{
return !v ? v : String(v).replace(/<\/?[^>]+>/gi, "");
}-*/;
/**
* Substitutes the indexed parameters.
*
* @param text the text
* @param param the parameter
* @return the new text
*/
public static String substitute(String text, int param) {
return substitute(text, safeRegexReplacement("" + param));
}
/**
* Substitutes the named parameters. The passed keys and values must be
* Strings.
*
* @param text the text
* @param params the parameters
* @return the new text
*/
public static String substitute(String text, Map<String, Object> params) {
Iterator<String> it = params.keySet().iterator();
while (it.hasNext()) {
String key = it.next();
text = text.replaceAll("\\{" + key + "}", safeRegexReplacement(params.get(key).toString()));
}
return text;
}
/**
* Substitutes the indexed parameters.
*
* @param text the text
* @param params the parameters
* @return the new text
*/
public static String substitute(String text, Object... params) {
for (int i = 0; i < params.length; i++) {
Object p = params[i];
if (p == null) {
p = "";
}
text = text.replaceAll("\\{" + i + "}", safeRegexReplacement(p.toString()));
}
return text;
}
/**
* Substitutes the named parameters. The passed keys and values must be
* Strings.
*
* @param text the text
* @param keys the parameter names
* @param params the parameter values
* @return the new text
*/
public static String substitute(String text, String[] keys, Map<String, Object> params) {
for (int i = 0; i < keys.length; i++) {
text = text.replaceAll("\\{" + keys[i] + "}", safeRegexReplacement((String) params.get(keys[i])));
}
return text;
}
/**
* Replace any \ or $ characters in the replacement string with an escaped \\
* or \$.
*
* @param replacement the regular expression replacement text
* @return null if replacement is null or the result of escaping all \ and $
* characters
*/
private static String safeRegexReplacement(String replacement) {
if (replacement == null) {
return replacement;
}
return replacement.replaceAll("\\\\", "\\\\\\\\").replaceAll("\\$", "\\\\\\$");
}
}
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