forked from jeresig/env-js
/
env.rhino.js
10093 lines (8825 loc) · 314 KB
/
env.rhino.js
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/*
* Envjs env-js.1.0.rc5
* Pure JavaScript Browser Environment
* By John Resig <http://ejohn.org/>
* Copyright 2008-2009 John Resig, under the MIT License
*/
/**
* @author thatcher
*/
var Envjs = function(){
if(arguments.length === 2){
for ( var i in arguments[1] ) {
var g = arguments[1].__lookupGetter__(i),
s = arguments[1].__lookupSetter__(i);
if ( g || s ) {
if ( g ) Envjs.__defineGetter__(i, g);
if ( s ) Envjs.__defineSetter__(i, s);
} else
Envjs[i] = arguments[1][i];
}
}
window.location = arguments[0];
};
/*
* env.rhino.js
*/
(function($env){
//You can emulate different user agents by overriding these after loading env
$env.appCodeName = "Envjs";//eg "Mozilla"
$env.appName = "Resig/20070309 BirdDog/0.0.0.1";//eg "Gecko/20070309 Firefox/2.0.0.3"
//set this to true and see profile/profile.js to select which methods
//to profile
$env.profile = false;
$env.log = function(msg, level){};
$env.debug = function(){};
$env.info = function(){};
$env.warn = function(){};
$env.error = function(){};
$env.debugParser = false;
//uncomment these if you want to get some internal log statementes
/*$env.debug = function(msg){
$env.log(msg,"DEBUG");
};*/
$env.info = function(msg){
$env.log(msg,"INFO");
};
$env.warn = function(msg){
$env.log(msg,"WARNIING");
};
$env.error = function(msg, e){
$env.log(msg+ " Line: "+ $env.lineSource(e),'ERROR');
$env.log(e||"",'ERROR');
};
$env.info("Initializing Core Platform Env");
// if we're running in an environment without env.js' custom extensions
// for manipulating the JavaScript scope chain, put in trivial emulations
$env.debug("performing check for custom Java methods in env-js.jar");
var countOfMissing = 0, dontCare;
try { dontCare = globalize; }
catch (ex){ globalize = function(){ return {}; };
countOfMissing++; }
try { dontCare = getScope; }
catch (ex){ getScope = function(){}; countOfMissing++; }
try { dontCare = setScope; }
catch (ex){ setScope = function(){}; countOfMissing++; }
try { dontCare = configureScope; }
catch (ex){ configureScope = function(){}; countOfMissing++; }
try { dontCare = restoreScope; }
catch (ex){ restoreScope = function(){}; countOfMissing++; }
if (countOfMissing != 0 && countOfMissing != 5)
$env.warning("Some but not all of scope-manipulation functions were " +
"not present in environment. JavaScript execution may " +
"not occur correctly.");
$env.lineSource = function(e){};
$env.hashCode = function(obj){};
//resolves location relative to base or window location
$env.location = function(path, base){};
//For Java the window.timer is created using the java.lang.Thread in combination
//with the java.lang.Runnable
$env.timer = function(fn, time){};
$env.wait = function(wait){};
$env.javaEnabled = false;
//Used in the XMLHttpRquest implementation to run a
// request in a seperate thread
$env.runAsync = function(fn){};
//Used to write to a local file
$env.writeToFile = function(text, url){};
//Used to write to a local file
$env.writeToTempFile = function(text, suffix){};
//Used to delete a local file
$env.deleteFile = function(url){};
$env.connection = function(xhr, responseHandler, data){};
$env.parseHTML = function(htmlstring){};
$env.parseXML = function(xmlstring){};
$env.xpath = function(expression, doc){};
$env.tmpdir = '';
$env.os_name = '';
$env.os_arch = '';
$env.os_version = '';
$env.lang = '';
$env.platform = "Rhino ";//how do we get the version
$env.load = function(){};
$env.safeScript = function(){
//do nothing
};
$env.scriptTypes = {
"text/javascript" :false,
"text/envjs" :true
};
$env.onScriptLoadError = function(){};
$env.loadLocalScript = function(script, parser){
$env.debug("loading script ");
var types, type, src, i, base,
docWrites = [],
write = document.write,
writeln = document.writeln;
//temporarily replace document write becuase the function
//has a different meaning during parsing
document.write = function(text){
docWrites.push(text);
};
try{
if(script.type){
types = script.type?script.type.split(";"):[];
for(i=0;i<types.length;i++){
if($env.scriptTypes[types[i]]){
if(script.src){
$env.info("loading allowed external script :" + script.src);
//lets you register a function to execute
//before the script is loaded
if($env.beforeload){
for(src in $env.beforeload){
if(script.src.match(src)){
$env.beforeload[src]();
}
}
}
base = "" + window.location;
load($env.location(script.src.match(/([^\?#]*)/)[1], base ));
//lets you register a function to execute
//after the script is loaded
if($env.afterload){
for(src in $env.afterload){
if(script.src.match(src)){
$env.afterload[src]();
}
}
}
}else{
$env.loadInlineScript(script);
}
}else{
if(!script.src && script.type == "text/javascript"){
$env.loadInlineScript(script);
}
}
}
}else{
//anonymous type and anonymous src means inline
if(!script.src){
$env.loadInlineScript(script);
}
}
}catch(e){
$env.error("Error loading script.", e);
$env.onScriptLoadError(script);
}finally{
if(parser){
parser.appendFragment(docWrites.join(''));
}
//return document.write to it's non-script loading form
document.write = write;
document.writeln = writeln;
}
};
$env.loadInlineScript = function(script){};
$env.globalize = function(){};
$env.getScope = function(){};
$env.setScope = function(){};
$env.configureScope = function(){};
$env.restoreScope = function(){};
$env.loadFrame = function(frame, url){
try {
var frameWindow,
makingNewWinFlag = !(frame._content);
if (makingNewWinFlag)
// a blank object, inherits from original global
// see org.mozilla.javascript.tools.envjs.Window.java
frameWindow = $env.globalize();
else
frameWindow = frame._content;
// define local variables with content of things that are
// in current global/window, because when the following
// function executes we'll have a new/blank
// global/window and won't be able to get at them....
var local__window__ = $env.window,
local_env = $env,
local_window = frame.ownerDocument.parentWindow;
// a local function gives us something whose scope
// is easy to change
var __frame__ = function(){
if (makingNewWinFlag){
local__window__(frameWindow,
local_env,
local_window,
local_window.top);
}
frameWindow.location = url;
}
// change scope of window object creation
// functions, so that functions/code they create
// will be scoped to new window object
// getScope()/setScope() from Window.java
var scopes = {
frame : $env.getScope(__frame__),
window : $env.getScope(local__window__),
global_load: $env.getScope(load),
local_load: $env.getScope($env.loadLocalScript)
};
$env.setScope(__frame__, frameWindow);
$env.setScope(local__window__, frameWindow);
$env.setScope($env.load, frameWindow);
$env.setScope($env.loadLocalScript, frameWindow);
__frame__();
frame._content = frameWindow;
// now restore the scope
$env.setScope(__frame__, scopes.frame);
$env.setScope(local__window__, scopes.window);
$env.setScope($env.load, scopes.global_load);
$env.setScope($env.loadLocalScript, scopes.local_load);
} catch(e){
$env.error("failed to load frame content: from " + url, e);
}
};
})(Envjs);/*
* env.rhino.js
*/
(function($env){
$env.log = function(msg, level){
print(' '+ (level?level:'LOG') + ':\t['+ new Date()+"] {ENVJS} "+msg);
};
$env.lineSource = function(e){
return e&&e.rhinoException?e.rhinoException.lineSource():"(line ?)";
};
$env.hashCode = function(obj){
return obj?obj.hashCode().toString()+'':null;
};
//For Java the window.location object is a java.net.URL
$env.location = function(path, base){
var protocol = new RegExp('(^file\:|^http\:|^https\:)');
var m = protocol.exec(path);
if(m&&m.length>1){
return new java.net.URL(path).toString()+'';
}else if(base){
return new java.net.URL(new java.net.URL(base), path).toString()+'';
}else{
//return an absolute url from a url relative to the window location
if(window.location.href.length > 0){
base = window.location.href.substring(0, window.location.href.lastIndexOf('/'));
return base + '/' + path;
}else{
return new java.io.File( path ).toURL().toString()+'';
}
}
};
var timers = [];
//For Java the window.timer is created using the java.lang.Thread in combination
//with the java.lang.Runnable
$env.timer = function(fn, time){
var running = true;
var run = sync(function(){ //while happening only thing in this timer
//$env.debug("running timed function");
fn();
});
var _this = this;
var thread = new java.lang.Thread(new java.lang.Runnable({
run: function(){
try {
while (running){
java.lang.Thread.currentThread().sleep(time);
run.apply(_this);
}
}catch(e){
$env.debug("interuption running timed function");
_this.stop();
$env.onInterrupt();
};
}
}));
this.start = function(){
thread.start();
};
this.stop = sync(function(num){
running = false;
thread.interrupt();
})
};
//Since we're running in rhino I guess we can safely assume
//java is 'enabled'. I'm sure this requires more thought
//than I've given it here
$env.javaEnabled = true;
//Used in the XMLHttpRquest implementation to run a
// request in a seperate thread
$env.onInterrupt = function(){};
$env.runAsync = function(fn){
$env.debug("running async");
var running = true;
var run = sync(function(){ //while happening only thing in this timer
//$env.debug("running timed function");
fn();
});
var async = (new java.lang.Thread(new java.lang.Runnable({
run: run
})));
try{
async.start();
}catch(e){
$env.error("error while running async", e);
async.interrupt();
$env.onInterrupt();
}
};
//Used to write to a local file
$env.writeToFile = function(text, url){
$env.debug("writing text to url : " + url);
var out = new java.io.FileWriter(
new java.io.File(
new java.net.URI(url.toString())));
out.write( text, 0, text.length );
out.flush();
out.close();
};
//Used to write to a local file
$env.writeToTempFile = function(text, suffix){
$env.debug("writing text to temp url : " + suffix);
// Create temp file.
var temp = java.io.File.createTempFile("envjs-tmp", suffix);
// Delete temp file when program exits.
temp.deleteOnExit();
// Write to temp file
var out = new java.io.FileWriter(temp);
out.write(text, 0, text.length);
out.close();
return temp.getAbsolutePath().toString()+'';
};
//Used to delete a local file
$env.deleteFile = function(url){
var file = new java.io.File( new java.net.URI( url ) );
file["delete"]();
};
$env.connection = function(xhr, responseHandler, data){
var url = java.net.URL(xhr.url);//, $w.location);
var connection;
if ( /^file\:/.test(url) ) {
try{
if ( xhr.method == "PUT" ) {
var text = data || "" ;
$env.writeToFile(text, url);
} else if ( xhr.method == "DELETE" ) {
$env.deleteFile(url);
} else {
connection = url.openConnection();
connection.connect();
//try to add some canned headers that make sense
try{
if(xhr.url.match(/html$/)){
xhr.responseHeaders["Content-Type"] = 'text/html';
}else if(xhr.url.match(/.xml$/)){
xhr.responseHeaders["Content-Type"] = 'text/xml';
}else if(xhr.url.match(/.js$/)){
xhr.responseHeaders["Content-Type"] = 'text/javascript';
}else if(xhr.url.match(/.json$/)){
xhr.responseHeaders["Content-Type"] = 'application/json';
}else{
xhr.responseHeaders["Content-Type"] = 'text/plain';
}
//xhr.responseHeaders['Last-Modified'] = connection.getLastModified();
//xhr.responseHeaders['Content-Length'] = headerValue+'';
//xhr.responseHeaders['Date'] = new Date()+'';*/
}catch(e){
$env.error('failed to load response headers',e);
}
}
}catch(e){
$env.error('failed to open file '+ url, e);
connection = null;
xhr.readyState = 4;
xhr.statusText = "Local File Protocol Error";
xhr.responseText = "<html><head/><body><p>"+ e+ "</p></body></html>";
}
} else {
connection = url.openConnection();
connection.setRequestMethod( xhr.method );
// Add headers to Java connection
for (var header in xhr.headers){
connection.addRequestProperty(header+'', xhr.headers[header]+'');
}
//write data to output stream if required
if(data&&data.length&&data.length>0){
if ( xhr.method == "PUT" || xhr.method == "POST" ) {
connection.setDoOutput(true);
var outstream = connection.getOutputStream(),
outbuffer = new java.lang.String(data).getBytes('UTF-8');
outstream.write(outbuffer, 0, outbuffer.length);
outstream.close();
}
}else{
connection.connect();
}
}
if(connection){
try{
var respheadlength = connection.getHeaderFields().size();
// Stick the response headers into responseHeaders
for (var i = 0; i < respheadlength; i++) {
var headerName = connection.getHeaderFieldKey(i);
var headerValue = connection.getHeaderField(i);
if (headerName)
xhr.responseHeaders[headerName+''] = headerValue+'';
}
}catch(e){
$env.error('failed to load response headers',e);
}
xhr.readyState = 4;
xhr.status = parseInt(connection.responseCode,10) || undefined;
xhr.statusText = connection.responseMessage || "";
var contentEncoding = connection.getContentEncoding() || "utf-8",
baos = new java.io.ByteArrayOutputStream(),
buffer = java.lang.reflect.Array.newInstance(java.lang.Byte.TYPE, 1024),
length,
stream = null,
responseXML = null;
try{
stream = (contentEncoding.equalsIgnoreCase("gzip") || contentEncoding.equalsIgnoreCase("decompress") )?
new java.util.zip.GZIPInputStream(connection.getInputStream()) :
connection.getInputStream();
}catch(e){
if (connection.getResponseCode() == 404)
$env.info('failed to open connection stream \n' +
e.toString(), e);
else
$env.error('failed to open connection stream \n' +
e.toString(), e);
stream = connection.getErrorStream();
}
while ((length = stream.read(buffer)) != -1) {
baos.write(buffer, 0, length);
}
baos.close();
stream.close();
xhr.responseText = java.nio.charset.Charset.forName("UTF-8").
decode(java.nio.ByteBuffer.wrap(baos.toByteArray())).toString()+"";
}
if(responseHandler){
$env.debug('calling ajax response handler');
responseHandler();
}
};
var htmlDocBuilder = Packages.javax.xml.parsers.DocumentBuilderFactory.newInstance();
htmlDocBuilder.setNamespaceAware(false);
htmlDocBuilder.setValidating(false);
var htmlCleaner,
cleanXMLSerializer,
cleanerProperties,
htmlTransformer,
htmlOutputProps;
$env.fixHTML = false;
$env.cleanHTML = function(xmlString){
var htmlString;
$env.debug('Cleaning html :\n'+xmlString);
if(!htmlCleaner){
cleanerProperties = new org.htmlcleaner.CleanerProperties();
cleanerProperties.setOmitHtmlEnvelope(true);
cleanerProperties.setTranslateSpecialEntities(true);
cleanerProperties.setAdvancedXmlEscape(true);
cleanerProperties.setUseCdataForScriptAndStyle(false);
cleanerProperties.setOmitXmlDeclaration(true);
htmlCleaner = new org.htmlcleaner.HtmlCleaner(cleanerProperties);
cleanXMLSerializer = new org.htmlcleaner.SimpleXmlSerializer(cleanerProperties);
//may have been initialized in $env.xslt
/*transformerFactory = transformerFactory||
Packages.javax.xml.transform.TransformerFactory.newInstance();
htmlTransformer = transformerFactory.newTransformer();
htmlOutputProps = new java.util.Properties();
htmlOutputProps.put(javax.xml.transform.OutputKeys.METHOD, "xml");
htmlOutputProps.put(javax.xml.transform.OutputKeys.INDENT , "no");
htmlOutputProps.put(javax.xml.transform.OutputKeys.ENCODING , "UTF-8");
htmlOutputProps.put(javax.xml.transform.OutputKeys.OMIT_XML_DECLARATION , "yes");
htmlTransformer.setOutputProperties(htmlOutputProps)*/
}
/*var node = cleanXMLSerializer.createDOM(htmlCleaner.clean(xmlString)),
outText = new java.io.StringWriter();
htmlTransformer.transform(
new javax.xml.transform.dom.DOMSource(node),
new javax.xml.transform.stream.StreamResult(outText));
htmlString = outText.toString()+'';*/
htmlString = cleanXMLSerializer.getXmlAsString(htmlCleaner.clean(xmlString));
//$env.info('Cleaned html :\n'+htmlString);
return htmlString;
};
var xmlDocBuilder = Packages.javax.xml.parsers.DocumentBuilderFactory.newInstance();
xmlDocBuilder.setNamespaceAware(true);
xmlDocBuilder.setValidating(false);
$env.parseXML = function(xmlstring){
return xmlDocBuilder.newDocumentBuilder().parse(
new java.io.ByteArrayInputStream(
(new java.lang.String(xmlstring)).getBytes("UTF8")));
};
$env.xpath = function(expression, doc){
return Packages.javax.xml.xpath.
XPathFactory.newInstance().newXPath().
evaluate(expression, doc, javax.xml.xpath.XPathConstants.NODESET);
};
var jsonmlxslt;
$env.jsonml = function(xmlstring){
jsonmlxslt = jsonmlxslt||$env.xslt($env.xml2jsonml.toXMLString());
var jsonml = $env.xslttransform(jsonmlxslt, xmlstring);
//$env.debug('jsonml :\n'+jsonml);
return eval(jsonml);
};
var transformerFactory;
$env.xslt = function(xsltstring){
transformerFactory = transformerFactory||
Packages.javax.xml.transform.TransformerFactory.newInstance();
return transformerFactory.newTransformer(
new javax.xml.transform.dom.DOMSource(
$env.parseXML(xsltstring)
)
);
};
$env.xslttransform = function(xslt, xmlstring){
var baos = new java.io.ByteArrayOutputStream();
xslt.transform(
new javax.xml.transform.dom.DOMSource($env.parseHTML(xmlstring)),
new javax.xml.transform.stream.StreamResult(baos)
);
return java.nio.charset.Charset.forName("UTF-8").
decode(java.nio.ByteBuffer.wrap(baos.toByteArray())).toString()+"";
};
$env.tmpdir = java.lang.System.getProperty("java.io.tmpdir");
$env.os_name = java.lang.System.getProperty("os.name");
$env.os_arch = java.lang.System.getProperty("os.arch");
$env.os_version = java.lang.System.getProperty("os.version");
$env.lang = java.lang.System.getProperty("user.lang");
$env.platform = "Rhino ";//how do we get the version
//injected by org.mozilla.javascript.tools.envjs.
$env.load = load;
$env.safeScript = function(){
//do nothing
};
$env.scriptTypes = {
"text/javascript" :false,
"text/envjs" :true
};
$env.loadInlineScript = function(script){
var tmpFile = $env.writeToTempFile(script.text, 'js') ;
$env.debug("loading " + tmpFile);
$env.load(tmpFile);
};
//injected by org.mozilla.javascript.tools.envjs.
$env.globalize = globalize;
$env.getScope = getScope;
$env.setScope = setScope;
$env.configureScope = configureScope;
$env.restoreScope = restoreScope;
})(Envjs);/*
* Envjs env-js.1.0.rc5
* Pure JavaScript Browser Environment
* By John Resig <http://ejohn.org/>
* Copyright 2008-2009 John Resig, under the MIT License
*/
try {
Envjs.window = function($w,
$env,
$parentWindow,
$initTop){
// The Window Object
var __this__ = $w;
$w.__defineGetter__('window', function(){
return __this__;
});
/*
* window.js
* - this file will be wrapped in a closure providing the window object as $w
*/
// a logger or empty function available to all modules.
var $log = $env.log,
$debug = $env.debug,
$info = $env.info,
$warn = $env.warn,
$error = $env.error;
//The version of this application
var $version = "0.1";
//This should be hooked to git or svn or whatever
var $revision = "0.0.0.0";
//These descriptions of window properties are taken loosely David Flanagan's
//'JavaScript - The Definitive Guide' (O'Reilly)
/**> $cookies - see cookie.js <*/
// read only boolean specifies whether the window has been closed
var $closed = false;
// a read/write string that specifies the default message that appears in the status line
var $defaultStatus = "Done";
// a read-only reference to the Document object belonging to this window
/**> $document - See document.js <*/
//IE only, refers to the most recent event object - this maybe be removed after review
var $event = null;
//A read-only array of window objects
//var $frames = []; // TODO: since window.frames can be accessed like a
// hash, will need an object to really implement
// a read-only reference to the History object
/**> $history - see location.js <**/
// read-only properties that specify the height and width, in pixels
var $innerHeight = 600, $innerWidth = 800;
// a read-only reference to the Location object. the location object does expose read/write properties
/**> $location - see location.js <**/
// The name of window/frame. Set directly, when using open(), or in frameset.
// May be used when specifying the target attribute of links
var $name;
// a read-only reference to the Navigator object
/**> $navigator - see navigator.js <**/
// a read/write reference to the Window object that contained the script that called open() to
//open this browser window. This property is valid only for top-level window objects.
var $opener;
// Read-only properties that specify the total height and width, in pixels, of the browser window.
// These dimensions include the height and width of the menu bar, toolbars, scrollbars, window
// borders and so on. These properties are not supported by IE and IE offers no alternative
// properties;
var $outerHeight = $innerHeight, $outerWidth = $innerWidth;
// Read-only properties that specify the number of pixels that the current document has been scrolled
//to the right and down. These are not supported by IE.
var $pageXOffset = 0, $pageYOffset = 0;
//A read-only reference to the Window object that contains this window or frame. If the window is
// a top-level window, parent refers to the window itself. If this window is a frame, this property
// refers to the window or frame that conatins it.
var $parent = $parentWindow;
// a read-only refernce to the Screen object that specifies information about the screen:
// the number of available pixels and the number of available colors.
/**> $screen - see screen.js <**/
// read only properties that specify the coordinates of the upper-left corner of the screen.
var $screenX = 0, $screenY = 0;
var $screenLeft = $screenX, $screenTop = $screenY;
// a read/write string that specifies the current contents of the status line.
var $status = '';
// a read-only reference to the top-level window that contains this window. If this
// window is a top-level window it is simply a refernce to itself. If this window
// is a frame, the top property refers to the top-level window that contains the frame.
var $top = $initTop;
// the window property is identical to the self property and to this obj
var $window = $w;
$debug("Initializing Window.");
__extend__($w,{
get closed(){return $closed;},
get defaultStatus(){return $defaultStatus;},
set defaultStatus(_defaultStatus){$defaultStatus = _defaultStatus;},
//get document(){return $document;}, - see document.js
get event(){return $event;},
get frames(){return undefined;}, // TODO: not yet any code to maintain list
get length(){return undefined;}, // should be frames.length, but.... TODO
//get history(){return $history;}, - see location.js
get innerHeight(){return $innerHeight;},
get innerWidth(){return $innerWidth;},
get clientHeight(){return $innerHeight;},
get clientWidth(){return $innerWidth;},
//get location(){return $location;}, see location.js
get name(){return $name;},
set name(newName){ $name = newName; },
//get navigator(){return $navigator;}, see navigator.js
get opener(){return $opener;},
get outerHeight(){return $outerHeight;},
get outerWidth(){return $outerWidth;},
get pageXOffest(){return $pageXOffset;},
get pageYOffset(){return $pageYOffset;},
get parent(){return $parent;},
//get screen(){return $screen;}, see screen.js
get screenLeft(){return $screenLeft;},
get screenTop(){return $screenTop;},
get screenX(){return $screenX;},
get screenY(){return $screenY;},
get self(){return $window;},
get status(){return $status;},
set status(_status){$status = _status;},
get top(){return $top || $window;},
get window(){return $window;}
});
$w.open = function(url, name, features, replace){
//TODO. Remember to set $opener, $name
};
$w.close = function(){
//TODO. Remember to set $closed
};
/* Time related functions - see timer.js
* - clearTimeout
* - clearInterval
* - setTimeout
* - setInterval
*/
/*
* Events related functions - see event.js
* - addEventListener
* - attachEvent
* - detachEvent
* - removeEventListener
*
* These functions are identical to the Element equivalents.
*/
/*
* UIEvents related functions - see uievent.js
* - blur
* - focus
*
* These functions are identical to the Element equivalents.
*/
/* Dialog related functions - see dialog.js
* - alert
* - confirm
* - prompt
*/
/* Screen related functions - see screen.js
* - moveBy
* - moveTo
* - print
* - resizeBy
* - resizeTo
* - scrollBy
* - scrollTo
*/
/* CSS related functions - see css.js
* - getComputedStyle
*/
/*
* Shared utility methods
*/
// Helper method for extending one object with another.
function __extend__(a,b) {
for ( var i in b ) {
var g = b.__lookupGetter__(i), s = b.__lookupSetter__(i);
if ( g || s ) {
if ( g ) a.__defineGetter__(i, g);
if ( s ) a.__defineSetter__(i, s);
} else
a[i] = b[i];
} return a;
};
// from ariel flesler http://flesler.blogspot.com/2008/11/fast-trim-function-for-javascript.html
// this might be a good utility function to provide in the env.core
// as in might be useful to the parser and other areas as well
function trim( str ){
return (str || "").replace( /^\s+|\s+$/g, "" );
};
/*function trim( str ){
var start = -1,
end = str.length;
/*jsl:ignore*
while( str.charCodeAt(--end) < 33 );
while( str.charCodeAt(++start) < 33 );
/*jsl:end*
return str.slice( start, end + 1 );
};*/
//from jQuery
function __setArray__( target, array ) {
// Resetting the length to 0, then using the native Array push
// is a super-fast way to populate an object with array-like properties
target.length = 0;
Array.prototype.push.apply( target, array );
};
$debug("Defining NodeList");
/*
* NodeList - DOM Level 2
*/
/**
* @class DOMNodeList - provides the abstraction of an ordered collection of nodes
*
* @author Jon van Noort (jon@webarcana.com.au)
*
* @param ownerDocument : DOMDocument - the ownerDocument
* @param parentNode : DOMNode - the node that the DOMNodeList is attached to (or null)
*/
var DOMNodeList = function(ownerDocument, parentNode) {
this.length = 0;
this.parentNode = parentNode;
this.ownerDocument = ownerDocument;
this._readonly = false;
__setArray__(this, []);
};
__extend__(DOMNodeList.prototype, {
item : function(index) {
var ret = null;
//$log("NodeList item("+index+") = " + this[index]);
if ((index >= 0) && (index < this.length)) { // bounds check
ret = this[index]; // return selected Node
}
return ret; // if the index is out of bounds, default value null is returned
},
get xml() {
var ret = "";
// create string containing the concatenation of the string values of each child
for (var i=0; i < this.length; i++) {
if(this[i]){
if(this[i].nodeType == DOMNode.TEXT_NODE && i>0 && this[i-1].nodeType == DOMNode.TEXT_NODE){
//add a single space between adjacent text nodes
ret += " "+this[i].xml;
}else{
ret += this[i].xml;
}
}
}
return ret;
},
toArray: function () {
var children = [];
for ( var i=0; i < this.length; i++) {
children.push (this[i]);
}
return children;
},
toString: function(){
return "[ "+(this.length > 0?Array.prototype.join.apply(this, [", "]):"Empty NodeList")+" ]";
}
});
/**
* @method DOMNodeList._findItemIndex - find the item index of the node with the specified internal id
* @author Jon van Noort (jon@webarcana.com.au)
* @param id : int - unique internal id
* @return : int
*/
var __findItemIndex__ = function (nodelist, id) {
var ret = -1;
// test that id is valid
if (id > -1) {
for (var i=0; i<nodelist.length; i++) {
// compare id to each node's _id
if (nodelist[i]._id == id) { // found it!
ret = i;
break;
}
}
}
return ret; // if node is not found, default value -1 is returned
};
/**
* @method DOMNodeList._insertBefore - insert the specified Node into the NodeList before the specified index
* Used by DOMNode.insertBefore(). Note: DOMNode.insertBefore() is responsible for Node Pointer surgery
* DOMNodeList._insertBefore() simply modifies the internal data structure (Array).
*
* @author Jon van Noort (jon@webarcana.com.au)
* @param newChild : DOMNode - the Node to be inserted
* @param refChildIndex : int - the array index to insert the Node before
*/
var __insertBefore__ = function(nodelist, newChild, refChildIndex) {
if ((refChildIndex >= 0) && (refChildIndex <= nodelist.length)) { // bounds check
if (newChild.nodeType == DOMNode.DOCUMENT_FRAGMENT_NODE) { // node is a DocumentFragment
// append the children of DocumentFragment
Array.prototype.splice.apply(nodelist,[refChildIndex, 0].concat(newChild.childNodes.toArray()));
}
else {
// append the newChild