/usr/share/php/xajax/xajax_js/xajax_core_uncompressed.js is in php-xajax 0.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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File: xajax_core.js
This file contains the definition of the main xajax javascript core.
This is the client side code which runs on the web browser or similar
web enabled application. Include this in the HEAD of each page for
which you wish to use xajax.
Title: xajax core javascript library
Please see <copyright.inc.php> for a detailed description, copyright
and license information.
*/
/*
@package xajax
@version $Id: xajax_core_uncompressed.js 327 2007-02-28 16:55:26Z calltoconstruct $
@copyright Copyright (c) 2005-2007 by Jared White & J. Max Wilson
@copyright Copyright (c) 2008-2009 by Joseph Woolley, Steffen Konerow, Jared White & J. Max Wilson
@license http://www.xajaxproject.org/bsd_license.txt BSD License
*/
/*
Class: xajax.config
This class contains all the default configuration settings. These
are application level settings; however, they can be overridden
by including a xajax.config definition prior to including the
<xajax_core.js> file, or by specifying the appropriate configuration
options on a per call basis.
*/
if ('undefined' == typeof xajax)
xajax = {};
if ('undefined' == typeof xajax.config)
xajax.config = {};
/*
Function: xajax.config.setDefault
This function will set a default configuration option if it is
not already set.
Parameters:
option - (string):
The name of the option that will be set.
defaultValue - (unknown):
The value to use if a value was not already set.
*/
xajax.config.setDefault = function(option, defaultValue) {
if ('undefined' == typeof xajax.config[option])
xajax.config[option] = defaultValue;
}
/*
Object: commonHeaders
An array of header entries where the array key is the header
option name and the associated value is the value that will
set when the request object is initialized.
These headers will be set for both POST and GET requests.
*/
xajax.config.setDefault('commonHeaders', {
'If-Modified-Since': 'Sat, 1 Jan 2000 00:00:00 GMT'
});
/*
Object: postHeaders
An array of header entries where the array key is the header
option name and the associated value is the value that will
set when the request object is initialized.
*/
xajax.config.setDefault('postHeaders', {});
/*
Object: getHeaders
An array of header entries where the array key is the header
option name and the associated value is the value that will
set when the request object is initialized.
*/
xajax.config.setDefault('getHeaders', {});
/*
Boolean: waitCursor
true - xajax should display a wait cursor when making a request
false - xajax should not show a wait cursor during a request
*/
xajax.config.setDefault('waitCursor', false);
/*
Boolean: statusMessages
true - xajax should update the status bar during a request
false - xajax should not display the status of the request
*/
xajax.config.setDefault('statusMessages', false);
/*
Object: baseDocument
The base document that will be used throughout the code for
locating elements by ID.
*/
xajax.config.setDefault('baseDocument', document);
/*
String: requestURI
The URI that requests will be sent to.
*/
xajax.config.setDefault('requestURI', xajax.config.baseDocument.URL);
/*
String: defaultMode
The request mode.
'asynchronous' - The request will immediately return, the
response will be processed when (and if) it is received.
'synchronous' - The request will block, waiting for the
response. This option allows the server to return
a value directly to the caller.
*/
xajax.config.setDefault('defaultMode', 'asynchronous');
/*
String: defaultHttpVersion
The Hyper Text Transport Protocol version designated in the
header of the request.
*/
xajax.config.setDefault('defaultHttpVersion', 'HTTP/1.1');
/*
String: defaultContentType
The content type designated in the header of the request.
*/
xajax.config.setDefault('defaultContentType', 'application/x-www-form-urlencoded');
/*
Integer: defaultResponseDelayTime
The delay time, in milliseconds, associated with the
<xajax.callback.global.onRequestDelay> event.
*/
xajax.config.setDefault('defaultResponseDelayTime', 1000);
/*
Integer: defaultExpirationTime
The amount of time to wait, in milliseconds, before a request
is considered expired. This is used to trigger the
<xajax.callback.global.onExpiration event.
*/
xajax.config.setDefault('defaultExpirationTime', 10000);
/*
String: defaultMethod
The method used to send requests to the server.
'POST' - Generate a form POST request
'GET' - Generate a GET request; parameters are appended
to the <xajax.config.requestURI> to form a URL.
*/
xajax.config.setDefault('defaultMethod', 'POST'); // W3C: Method is case sensitive
/*
Integer: defaultRetry
The number of times a request should be retried
if it expires.
*/
xajax.config.setDefault('defaultRetry', 5);
/*
Object: defaultReturnValue
The value returned by <xajax.call> when in asynchronous
mode, or when a syncrhonous call does not specify the
return value.
*/
xajax.config.setDefault('defaultReturnValue', false);
/*
Integer: maxObjectDepth
The maximum depth of recursion allowed when serializing
objects to be sent to the server in a request.
*/
xajax.config.setDefault('maxObjectDepth', 20);
/*
Integer: maxObjectSize
The maximum number of members allowed when serializing
objects to be sent to the server in a request.
*/
xajax.config.setDefault('maxObjectSize', 2000);
xajax.config.setDefault('responseQueueSize', 1000);
/*
Class: xajax.config.status
Provides support for updating the browser's status bar during
the request process. By splitting the status bar functionality
into an object, the xajax developer has the opportunity to
customize the status bar messages prior to sending xajax requests.
*/
xajax.config.status = {
/*
Function: update
Constructs and returns a set of event handlers that will be
called by the xajax framework to set the status bar messages.
*/
update: function() {
return {
onRequest: function() {
window.status = 'Sending Request...';
},
onWaiting: function() {
window.status = 'Waiting for Response...';
},
onProcessing: function() {
window.status = 'Processing...';
},
onComplete: function() {
window.status = 'Done.';
}
}
},
/*
Function: dontUpdate
Constructs and returns a set of event handlers that will be
called by the xajax framework where status bar updates
would normally occur.
*/
dontUpdate: function() {
return {
onRequest: function() {},
onWaiting: function() {},
onProcessing: function() {},
onComplete: function() {}
}
}
}
/*
Class: xajax.config.cursor
Provides the base functionality for updating the browser's cursor
during requests. By splitting this functionalityh into an object
of it's own, xajax developers can now customize the functionality
prior to submitting requests.
*/
xajax.config.cursor = {
/*
Function: update
Constructs and returns a set of event handlers that will be
called by the xajax framework to effect the status of the
cursor during requests.
*/
update: function() {
return {
onWaiting: function() {
if (xajax.config.baseDocument.body)
xajax.config.baseDocument.body.style.cursor = 'wait';
},
onComplete: function() {
xajax.config.baseDocument.body.style.cursor = 'auto';
}
}
},
/*
Function: dontUpdate
Constructs and returns a set of event handlers that will
be called by the xajax framework where cursor status changes
would typically be made during the handling of requests.
*/
dontUpdate: function() {
return {
onWaiting: function() {},
onComplete: function() {}
}
}
}
/*
Class: xajax.tools
This contains utility functions which are used throughout
the xajax core.
*/
xajax.tools = {}
/*
Function: xajax.tools.$
Shorthand for finding a uniquely named element within
the document.
Parameters:
sId - (string):
The unique name of the element (specified by the
ID attribute), not to be confused with the name
attribute on form elements.
Returns:
object - The element found or null.
Note:
This function uses the <xajax.config.baseDocument>
which allows <xajax> to operate on the main window
document as well as documents from contained
iframes and child windows.
See also:
<xajax.$> and <xjx.$>
*/
xajax.tools.$ = function(sId) {
if (!sId)
return null;
var oDoc = xajax.config.baseDocument;
var obj = oDoc.getElementById(sId);
if (obj)
return obj;
if (oDoc.all)
return oDoc.all[sId];
return obj;
}
/*
Function xajax.tools.arrayContainsValue
Looks for a value within the specified array and, if found,
returns true; otherwise it returns false.
Parameters:
array - (object):
The array to be searched.
valueToCheck - (object):
The value to search for.
Returns:
true : The value is one of the values contained in the
array.
false : The value was not found in the specified array.
*/
xajax.tools.arrayContainsValue = function(array, valueToCheck) {
var i = 0;
var l = array.length;
while (i < l) {
if (array[i] == valueToCheck)
return true;
++i;
}
return false;
}
/*
Function: xajax.tools.doubleQuotes
Replace all occurances of the single quote character with a double
quote character.
Parameters:
haystack - The source string to be scanned.
Returns:
string - A new string with the modifications applied.
*/
xajax.tools.doubleQuotes = function(haystack) {
return haystack.replace(new RegExp("'", 'g'), '"');
}
/*
Function: xajax.tools.singleQuotes
Replace all occurances of the double quote character with a single
quote character.
haystack - The source string to be scanned.
Returns:
string - A new string with the modification applied.
*/
xajax.tools.singleQuotes = function(haystack) {
return haystack.replace(new RegExp('"', 'g'), "'");
}
/*
Function: xajax.tools._escape
Determine if the specified value contains special characters and
create a CDATA section so the value can be safely transmitted.
Parameters:
data - (string or other):
The source string value to be evaluated or an object of unknown
type.
Returns:
string - The string value, escaped if necessary or the object provided
if it is not a string.
Note:
When the specified object is NOT a string, the value is returned
as is.
*/
xajax.tools._escape = function(data) {
if ('undefined' == typeof data)
return data;
// 'object' is handled elsewhere,
// 'string' handled below,
// 'number' will be returned here
// 'boolean' will be returned here
if ('string' != typeof data)
return data;
var needCDATA = false;
if (encodeURIComponent(data) != data) {
needCDATA = true;
var segments = data.split('<![CDATA[');
var segLen = segments.length;
data = [];
for (var i = 0; i < segLen; ++i) {
var segment = segments[i];
var fragments = segment.split(']]>');
var fragLen = fragments.length;
segment = '';
for (var j = 0; j < fragLen; ++j) {
if (0 != j)
segment += ']]]]><![CDATA[>';
segment += fragments[j];
}
if (0 != i)
data.push('<![]]><![CDATA[CDATA[');
data.push(segment);
}
data = data.join('');
}
if (needCDATA)
data = '<![CDATA[' + data + ']]>';
return data;
}
/*
Function: xajax.tools._objectToXML
Convert a javascript object or array into XML suitable for
transmission to the server.
Parameters:
obj - The object or array to convert.
guard - An object used to track the level of recursion
when encoding javascript objects. When an object
contains a reference to it's parent and the parent
contains a reference to the child, an infinite
recursion will cause some browsers to crash.
Returns:
string - the xml representation of the object or array.
See also:
<xajax.config.maxObjectDepth> and <xajax.config.maxObjectSize>
*/
xajax.tools._objectToXML = function(obj, guard) {
var aXml = [];
aXml.push('<xjxobj>');
for (var key in obj) {
++guard.size;
if (guard.maxSize < guard.size)
return aXml.join('');
if ('undefined' != typeof obj[key]) {
if ('constructor' == key)
continue;
if ('function' == typeof obj[key])
continue;
aXml.push('<e><k>');
var val = xajax.tools._escape(key);
aXml.push(val);
aXml.push('</k><v>');
if ('object' == typeof obj[key]) {
++guard.depth;
if (guard.maxDepth > guard.depth) {
try {
aXml.push(xajax.tools._objectToXML(obj[key], guard));
} catch (e) {
// do nothing, if the debug module is installed
// it will catch the exception and handle it
}
}
--guard.depth;
} else {
var val = xajax.tools._escape(obj[key]);
if ('undefined' == typeof val || null == val) {
aXml.push('*');
} else {
var sType = typeof val;
if ('string' == sType)
aXml.push('S');
else if ('boolean' == sType)
aXml.push('B');
else if ('number' == sType)
aXml.push('N');
aXml.push(val);
}
}
aXml.push('</v></e>');
}
}
aXml.push('</xjxobj>');
return aXml.join('');
}
/*
Function: xajax.tools._enforceDataType
Ensure that the javascript variable created is of the correct data type.
Parameters:
value (string)
Returns:
(unknown) - The value provided converted to the correct data type.
*/
xajax.tools._enforceDataType = function(value) {
value = new String(value);
var type = value.substr(0, 1);
value = value.substr(1);
if ('*' == type)
value = null;
else if ('N' == type)
value = value - 0;
else if ('B' == type)
value = !!value;
// else if ('S' == type)
// value = new String(value);
return value;
}
/*
Function: xajax.tools._nodeToObject
Deserialize a javascript object from an XML node.
Parameters:
node - A node, likely from the xml returned by the server.
Returns:
object - The object extracted from the xml node.
*/
xajax.tools._nodeToObject = function(node) {
if (null == node)
return '';
if ('undefined' != typeof node.nodeName) {
if ('#cdata-section' == node.nodeName || '#text' == node.nodeName) {
var data = '';
do if (node.data) data += node.data; while (node = node.nextSibling);
return xajax.tools._enforceDataType(data);
} else if ('xjxobj' == node.nodeName) {
var key = null;
var value = null;
var data = new Array;
var child = node.firstChild;
while (child) {
if ('e' == child.nodeName) {
var grandChild = child.firstChild;
while (grandChild) {
if ('k' == grandChild.nodeName)
// Don't support objects here, only number, string, etc...
key = xajax.tools._enforceDataType(grandChild.firstChild.data);
else ('v' == grandChild.nodeName)
// Value might be object, string, number, boolean... even null or undefined
value = xajax.tools._nodeToObject(grandChild.firstChild);
grandChild = grandChild.nextSibling;
}
// Allow the value to be null or undefined (or a value)
if (null != key) { // && null != value) {
data[key] = value;
key = value = null;
}
}
child = child.nextSibling;
}
return data;
}
}
throw { code: 10001, data: node.nodeName };
}
/*
Function: xajax.tools.getRequestObject
Construct an XMLHttpRequest object dependent on the capabilities
of the browser.
Returns:
object - Javascript XHR object.
*/
xajax.tools.getRequestObject = function() {
if ('undefined' != typeof XMLHttpRequest) {
xajax.tools.getRequestObject = function() {
return new XMLHttpRequest();
}
} else if ('undefined' != typeof ActiveXObject) {
xajax.tools.getRequestObject = function() {
try {
return new ActiveXObject('Msxml2.XMLHTTP.4.0');
} catch (e) {
xajax.tools.getRequestObject = function() {
try {
return new ActiveXObject('Msxml2.XMLHTTP');
} catch (e2) {
xajax.tools.getRequestObject = function() {
return new ActiveXObject('Microsoft.XMLHTTP');
}
return xajax.tools.getRequestObject();
}
}
return xajax.tools.getRequestObject();
}
}
} else if (window.createRequest) {
xajax.tools.getRequestObject = function() {
return window.createRequest();
}
} else {
xajax.tools.getRequestObject = function() {
throw { code: 10002 };
}
}
// this would seem to cause an infinite loop, however, the function should
// be reassigned by now and therefore, it will not loop.
return xajax.tools.getRequestObject();
}
/*
Function: xajax.tools.getBrowserHTML
Insert the specified string of HTML into the document, then
extract it. This gives the browser the ability to validate
the code and to apply any transformations it deems appropriate.
Parameters:
sValue - (string):
A block of html code or text to be inserted into the
browser's document.
Returns:
The (potentially modified) html code or text.
*/
xajax.tools.getBrowserHTML = function(sValue) {
var oDoc = xajax.config.baseDocument;
if (!oDoc.body)
return '';
var elWorkspace = xajax.$('xajax_temp_workspace');
if (!elWorkspace)
{
elWorkspace = oDoc.createElement('div');
elWorkspace.setAttribute('id', 'xajax_temp_workspace');
elWorkspace.style.display = 'none';
elWorkspace.style.visibility = 'hidden';
oDoc.body.appendChild(elWorkspace);
}
elWorkspace.innerHTML = sValue;
var browserHTML = elWorkspace.innerHTML;
elWorkspace.innerHTML = '';
return browserHTML;
}
/*
Function: xajax.tools.willChange
Tests to see if the specified data is the same as the current
value of the element's attribute.
Parameters:
element - (string or object):
The element or it's unique name (specified by the ID attribute)
attribute - (string):
The name of the attribute.
newData - (string):
The value to be compared with the current value of the specified
element.
Returns:
true - The specified value differs from the current attribute value.
false - The specified value is the same as the current value.
*/
xajax.tools.willChange = function(element, attribute, newData) {
if ('string' == typeof element)
element = xajax.$(element);
if (element) {
var oldData;
eval('oldData=element.'+attribute);
return (newData != oldData);
}
return false;
}
/*
Function: xajax.tools.getFormValues
Build an associative array of form elements and their values from
the specified form.
Parameters:
element - (string): The unique name (id) of the form to be processed.
disabled - (boolean, optional): Include form elements which are currently disabled.
prefix - (string, optional): A prefix used for selecting form elements.
Returns:
An associative array of form element id and value.
*/
xajax.tools.getFormValues = function(parent) {
var submitDisabledElements = false;
if (arguments.length > 1 && arguments[1] == true)
submitDisabledElements = true;
var prefix = '';
if(arguments.length > 2)
prefix = arguments[2];
if ('string' == typeof parent)
parent = xajax.$(parent);
var aFormValues = {};
// JW: Removing these tests so that form values can be retrieved from a specified
// container element like a DIV, regardless of whether they exist in a form or not.
//
// if (parent.tagName)
// if ('FORM' == parent.tagName.toUpperCase())
if (parent)
if (parent.childNodes)
xajax.tools._getFormValues(aFormValues, parent.childNodes, submitDisabledElements, prefix);
return aFormValues;
}
/*
Function: xajax.tools._getFormValues
Used internally by <xajax.tools.getFormValues> to recursively get the value
of form elements. This function will extract all form element values
regardless of the depth of the element within the form.
*/
xajax.tools._getFormValues = function(aFormValues, children, submitDisabledElements, prefix)
{
var iLen = children.length;
for (var i = 0; i < iLen; ++i) {
var child = children[i];
if ('undefined' != typeof child.childNodes)
xajax.tools._getFormValues(aFormValues, child.childNodes, submitDisabledElements, prefix);
xajax.tools._getFormValue(aFormValues, child, submitDisabledElements, prefix);
}
}
/*
Function: xajax.tools._getFormValue
Used internally by <xajax.tools._getFormValues> to extract a single form value.
This will detect the type of element (radio, checkbox, multi-select) and
add it's value(s) to the form values array.
*/
xajax.tools._getFormValue = function(aFormValues, child, submitDisabledElements, prefix)
{
if (!child.name)
return;
if ('PARAM' == child.tagName) return;
if (child.disabled)
if (true == child.disabled)
if (false == submitDisabledElements)
return;
if (prefix != child.name.substring(0, prefix.length))
return;
if (child.type)
if (child.type == 'radio' || child.type == 'checkbox')
if (false == child.checked)
return;
var name = child.name;
var values = [];
if ('select-multiple' == child.type) {
var jLen = child.length;
for (var j = 0; j < jLen; ++j) {
var option = child.options[j];
if (true == option.selected)
values.push(option.value);
}
} else {
values = child.value;
}
var keyBegin = name.indexOf('[');
if (0 <= keyBegin) {
var n = name;
var k = n.substr(0, n.indexOf('['));
var a = n.substr(n.indexOf('['));
if (typeof aFormValues[k] == 'undefined')
aFormValues[k] = [];
var p = aFormValues; // pointer reset
while (a.length != 0) {
var sa = a.substr(0, a.indexOf(']')+1);
var lk = k; //save last key
var lp = p; //save last pointer
a = a.substr(a.indexOf(']')+1);
p = p[k];
k = sa.substr(1, sa.length-2);
if (k == '') {
if ('select-multiple' == child.type) {
k = lk; //restore last key
p = lp;
} else {
k = p.length;
}
}
if (typeof p[k] == 'undefined')
p[k] = [];
}
p[k] = values;
} else {
aFormValues[name] = values;
}
}
/*
Function: xajax.tools.stripOnPrefix
Detect, and if found, remove the prefix 'on' from the specified
string. This is used while working with event handlers.
Parameters:
sEventName - (string): The string to be modified.
Returns:
string - The modified string.
*/
xajax.tools.stripOnPrefix = function(sEventName) {
sEventName = sEventName.toLowerCase();
if (0 == sEventName.indexOf('on'))
sEventName = sEventName.replace(/on/,'');
return sEventName;
}
/*
Function: xajax.tools.addOnPrefix
Detect, and add if not found, the prefix 'on' from the specified
string. This is used while working with event handlers.
Parameters:
sEventName - (string): The string to be modified.
Returns:
string - The modified string.
*/
xajax.tools.addOnPrefix = function(sEventName) {
sEventName = sEventName.toLowerCase();
if (0 != sEventName.indexOf('on'))
sEventName = 'on' + sEventName;
return sEventName;
}
/*
Class: xajax.tools.xml
An object that contains utility function for processing
xml response packets.
*/
xajax.tools.xml = {};
/*
Function: xajax.tools.xml.parseAttributes
Take the parameters passed in the command of the XML response
and convert them to parameters of the args object. This will
serve as the command object which will be stored in the
response command queue.
Parameters:
child - (object): The xml child node which contains the
attributes for the current response command.
obj - (object): The current response command that will have the
attributes applied.
*/
xajax.tools.xml.parseAttributes = function(child, obj) {
var iLen = child.attributes.length;
for (var i = 0; i < iLen; ++i) {
var attr = child.attributes[i];
obj[attr.name] = attr.value;
}
}
/*
Function: xajax.tools.xml.parseChildren
Parses the child nodes of the command of the response XML. Generally,
the child nodes contain the data element of the command; this member
may be an object, which will be deserialized by <xajax._nodeToObject>
Parameters:
child - (object): The xml node that contains the child (data) for
the current response command object.
obj - (object): The response command object.
*/
xajax.tools.xml.parseChildren = function(child, obj) {
obj.data = '';
if (0 < child.childNodes.length) {
if (1 < child.childNodes.length) {
var grandChild = child.firstChild;
do {
if ('#cdata-section' == grandChild.nodeName || '#text' == grandChild.nodeName) {
obj.data += grandChild.data;
}
} while (grandChild = grandChild.nextSibling);
} else {
var grandChild = child.firstChild;
if ('xjxobj' == grandChild.nodeName) {
obj.data = xajax.tools._nodeToObject(grandChild);
return;
} else if ('#cdata-section' == grandChild.nodeName || '#text' == grandChild.nodeName) {
obj.data = grandChild.data;
}
}
} else if ('undefined' != typeof child.data) {
obj.data = child.data;
}
obj.data = xajax.tools._enforceDataType(obj.data);
}
/*
Function: xajax.tools.xml.processFragment
Parameters:
xmlNode - (object): The first xml node in the xml fragment.
seq - (number): A counter used to keep track of the sequence
of this command in the response.
oRet - (object): A variable that is used to return the request
"return value" for use with synchronous requests.
*/
xajax.tools.xml.processFragment = function(xmlNode, seq, oRet, oRequest) {
var xx = xajax;
var xt = xx.tools;
while (xmlNode) {
if ('cmd' == xmlNode.nodeName) {
var obj = {};
obj.fullName = '*unknown*';
obj.sequence = seq;
obj.request = oRequest;
obj.context = oRequest.context;
xt.xml.parseAttributes(xmlNode, obj);
xt.xml.parseChildren(xmlNode, obj);
xt.queue.push(xx.response, obj);
} else if ('xjxrv' == xmlNode.nodeName) {
oRet = xt._nodeToObject(xmlNode.firstChild);
} else if ('debugmsg' == xmlNode.nodeName) {
// txt = xt._nodeToObject(xmlNode.firstChild);
} else
throw { code: 10004, data: xmlNode.nodeName }
++seq;
xmlNode = xmlNode.nextSibling;
}
return oRet;
}
/*
Class: xajax.tools.queue
This contains the code and variables for building, populating
and processing First In Last Out (FILO) buffers.
*/
xajax.tools.queue = {}
/*
Function: create
Construct and return a new queue object.
Parameters:
size - (integer):
The number of entries the queue will be able to hold.
*/
xajax.tools.queue.create = function(size) {
return {
start: 0,
size: size,
end: 0,
commands: [],
timeout: null
}
}
/*
Function: xajax.tools.queue.retry
Maintains a retry counter for the given object.
Parameters:
obj - (object):
The object to track the retry count for.
count - (integer):
The number of times the operation should be attempted
before a failure is indicated.
Returns:
true - The object has not exhausted all the retries.
false - The object has exhausted the retry count specified.
*/
xajax.tools.queue.retry = function(obj, count) {
var retries = obj.retries;
if (retries) {
--retries;
if (1 > retries)
return false;
} else retries = count;
obj.retries = retries;
return true;
}
/*
Function: xajax.tools.queue.rewind
Rewind the buffer head pointer, effectively reinserting the
last retrieved object into the buffer.
Parameters:
theQ - (object):
The queue to be rewound.
*/
xajax.tools.queue.rewind = function(theQ) {
if (0 < theQ.start)
--theQ.start;
else
theQ.start = theQ.size;
}
/*
Function: xajax.tools.queue.setWakeup
Set or reset a timeout that is used to restart processing
of the queue. This allows the queue to asynchronously wait
for an event to occur (giving the browser time to process
pending events, like loading files)
Parameters:
theQ - (object):
The queue to process upon timeout.
when - (integer):
The number of milliseconds to wait before starting/
restarting the processing of the queue.
*/
xajax.tools.queue.setWakeup = function(theQ, when) {
if (null != theQ.timeout) {
clearTimeout(theQ.timeout);
theQ.timeout = null;
}
theQ.timout = setTimeout(function() { xajax.tools.queue.process(theQ); }, when);
}
/*
Function: xajax.tools.queue.process
While entries exist in the queue, pull and entry out and
process it's command. When a command returns false, the
processing is halted.
Parameters:
theQ - (object): The queue object to process. This should
have been crated by calling <xajax.tools.queue.create>.
Returns:
true - The queue was fully processed and is now empty.
false - The queue processing was halted before the
queue was fully processed.
Note:
- Use <xajax.tools.queue.setWakeup> or call this function to
cause the queue processing to continue.
- This will clear the associated timeout, this function is not
designed to be reentrant.
- When an exception is caught, do nothing; if the debug module
is installed, it will catch the exception and handle it.
*/
xajax.tools.queue.process = function(theQ) {
if (null != theQ.timeout) {
clearTimeout(theQ.timeout);
theQ.timeout = null;
}
var obj = xajax.tools.queue.pop(theQ);
while (null != obj) {
try {
if (false == xajax.executeCommand(obj))
return false;
} catch (e) {
}
delete obj;
obj = xajax.tools.queue.pop(theQ);
}
return true;
}
/*
Function: xajax.tools.queue.push
Push a new object into the tail of the buffer maintained by the
specified queue object.
Parameters:
theQ - (object):
The queue in which you would like the object stored.
obj - (object):
The object you would like stored in the queue.
*/
xajax.tools.queue.push = function(theQ, obj) {
var next = theQ.end + 1;
if (next > theQ.size)
next = 0;
if (next != theQ.start) {
theQ.commands[theQ.end] = obj;
theQ.end = next;
} else
throw { code: 10003 }
}
/*
Function: xajax.tools.queue.pushFront
Push a new object into the head of the buffer maintained by
the specified queue object. This effectively pushes an object
to the front of the queue... it will be processed first.
Parameters:
theQ - (object):
The queue in which you would like the object stored.
obj - (object):
The object you would like stored in the queue.
*/
xajax.tools.queue.pushFront = function(theQ, obj) {
xajax.tools.queue.rewind(theQ);
theQ.commands[theQ.start] = obj;
}
/*
Function: xajax.tools.queue.pop
Attempt to pop an object off the head of the queue.
Parameters:
theQ - (object):
The queue object you would like to modify.
Returns:
object - The object that was at the head of the queue or
null if the queue was empty.
*/
xajax.tools.queue.pop = function(theQ) {
var next = theQ.start;
if (next == theQ.end)
return null;
next++;
if (next > theQ.size)
next = 0;
var obj = theQ.commands[theQ.start];
delete theQ.commands[theQ.start];
theQ.start = next;
return obj;
}
/*
Class: xajax.responseProcessor
*/
xajax.responseProcessor = {};
/*
Function: xajax.responseProcessor.xml
Parse the response XML into a series of commands. The commands
are constructed by calling <xajax.tools.xml.parseAttributes> and
<xajax.tools.xml.parseChildren>.
Parameters:
oRequest - (object): The request context object.
*/
xajax.responseProcessor.xml = function(oRequest) {
var xx = xajax;
var xt = xx.tools;
var xcb = xx.callback;
var gcb = xcb.global;
var lcb = oRequest.callback;
var oRet = oRequest.returnValue;
if (xt.arrayContainsValue(xx.responseSuccessCodes, oRequest.request.status)) {
xcb.execute([gcb, lcb], 'onSuccess', oRequest);
var seq = 0;
if (oRequest.request.responseXML) {
var responseXML = oRequest.request.responseXML;
if (responseXML.documentElement) {
oRequest.status.onProcessing();
var child = responseXML.documentElement.firstChild;
oRet = xt.xml.processFragment(child, seq, oRet, oRequest);
}
}
var obj = {};
obj.fullName = 'Response Complete';
obj.sequence = seq;
obj.request = oRequest;
obj.context = oRequest.context;
obj.cmd = 'rcmplt';
xt.queue.push(xx.response, obj);
// do not re-start the queue if a timeout is set
if (null == xx.response.timeout)
xt.queue.process(xx.response);
} else if (xt.arrayContainsValue(xx.responseRedirectCodes, oRequest.request.status)) {
xcb.execute([gcb, lcb], 'onRedirect', oRequest);
window.location = oRequest.request.getResponseHeader('location');
xx.completeResponse(oRequest);
} else if (xt.arrayContainsValue(xx.responseErrorsForAlert, oRequest.request.status)) {
xcb.execute([gcb, lcb], 'onFailure', oRequest);
xx.completeResponse(oRequest);
}
return oRet;
}
/*
Class: xajax.js
Contains the functions for javascript file and function
manipulation.
*/
xajax.js = {}
/*
Function: xajax.js.includeScriptOnce
Add a reference to the specified script file if one does not
already exist in the HEAD of the current document.
This will effecitvely cause the script file to be loaded in
the browser.
Parameters:
fileName - (string): The URI of the file.
Returns:
true - The reference exists or was added.
*/
xajax.js.includeScriptOnce = function(command) {
command.fullName = 'includeScriptOnce';
var fileName = command.data;
// Check for existing script tag for this file.
var oDoc = xajax.config.baseDocument;
var loadedScripts = oDoc.getElementsByTagName('script');
var iLen = loadedScripts.length;
for (var i = 0; i < iLen; ++i) {
var script = loadedScripts[i];
if (script.src) {
if (0 <= script.src.indexOf(fileName))
return true;
}
}
return xajax.js.includeScript(command);
}
/*
Function: xajax.js.includeScript
Adds a SCRIPT tag referencing the specified file. This
effectively causes the script to be loaded in the browser.
Parameters:
command (object) - Xajax response object
Returns:
true - The reference was added.
*/
xajax.js.includeScript = function(command) {
command.fullName = 'includeScript';
var oDoc = xajax.config.baseDocument;
var objHead = oDoc.getElementsByTagName('head');
var objScript = oDoc.createElement('script');
objScript.src = command.data;
if ('undefined' == typeof command.type) objScript.type = 'text/javascript';
else objScript.type = command.type;
if ('undefined' != typeof command.type) objScript.setAttribute('id', command.elm_id);
objHead[0].appendChild(objScript);
return true;
}
/*
Function: xajax.js.removeScript
Locates a SCRIPT tag in the HEAD of the document which references
the specified file and removes it.
Parameters:
command (object) - Xajax response object
Returns:
true - The script was not found or was removed.
*/
xajax.js.removeScript = function(command) {
command.fullName = 'removeScript';
var fileName = command.data;
var unload = command.unld;
var oDoc = xajax.config.baseDocument;
var loadedScripts = oDoc.getElementsByTagName('script');
var iLen = loadedScripts.length;
for (var i = 0; i < iLen; ++i) {
var script = loadedScripts[i];
if (script.src) {
if (0 <= script.src.indexOf(fileName)) {
if ('undefined' != typeof unload) {
var args = {};
args.data = unload;
args.context = window;
xajax.js.execute(args);
}
var parent = script.parentNode;
parent.removeChild(script);
}
}
}
return true;
}
/*
Function: xajax.js.sleep
Causes the processing of items in the queue to be delayed
for the specified amount of time. This is an asynchronous
operation, therefore, other operations will be given an
opportunity to execute during this delay.
Parameters:
args - (object): The response command containing the following
parameters.
- args.prop: The number of 10ths of a second to sleep.
Returns:
true - The sleep operation completed.
false - The sleep time has not yet expired, continue sleeping.
*/
xajax.js.sleep = function(command) {
command.fullName = 'sleep';
// inject a delay in the queue processing
// handle retry counter
if (xajax.tools.queue.retry(command, command.prop)) {
xajax.tools.queue.setWakeup(xajax.response, 100);
return false;
}
// wake up, continue processing queue
return true;
}
/*
Function: xajax.js.confirmCommands
Prompt the user with the specified text, if the user responds by clicking
cancel, then skip the specified number of commands in the response command
queue. If the user clicks Ok, the command processing resumes normal
operation.
Parameters:
command (object) - xajax response object
Returns:
true - The operation completed successfully.
*/
xajax.js.confirmCommands = function(command) {
command.fullName = 'confirmCommands';
var msg = command.data;
var numberOfCommands = command.id;
if (false == confirm(msg)) {
while (0 < numberOfCommands) {
xajax.tools.queue.pop(xajax.response);
--numberOfCommands;
}
}
return true;
}
/*
Function: xajax.js.execute
Execute the specified string of javascript code, using the current
script context.
Parameters:
args - The response command object containing the following:
- args.data: (string): The javascript to be evaluated.
- args.context: (object): The javascript object that to be
referenced as 'this' in the script.
Returns:
unknown - A value set by the script using 'returnValue = '
true - If the script does not set a returnValue.
*/
xajax.js.execute = function(args) {
args.fullName = 'execute Javascript';
var returnValue = true;
args.context.xajaxDelegateCall = function() {
eval(args.data);
}
args.context.xajaxDelegateCall();
return returnValue;
}
/*
Function: xajax.js.waitFor
Test for the specified condition, using the current script
context; if the result is false, sleep for 1/10th of a
second and try again.
Parameters:
args - The response command object containing the following:
- args.data: (string): The javascript to evaluate.
- args.prop: (integer): The number of 1/10ths of a
second to wait before giving up.
- args.context: (object): The current script context object
which is accessable in the javascript being evaulated
via the 'this' keyword.
Returns:
false - The condition evaulates to false and the sleep time
has not expired.
true - The condition evaluates to true or the sleep time has
expired.
*/
xajax.js.waitFor = function(args) {
args.fullName = 'waitFor';
var bResult = false;
var cmdToEval = 'bResult = (';
cmdToEval += args.data;
cmdToEval += ');';
try {
args.context.xajaxDelegateCall = function() {
eval(cmdToEval);
}
args.context.xajaxDelegateCall();
} catch (e) {
}
if (false == bResult) {
// inject a delay in the queue processing
// handle retry counter
if (xajax.tools.queue.retry(args, args.prop)) {
xajax.tools.queue.setWakeup(xajax.response, 100);
return false;
}
// give up, continue processing queue
}
return true;
}
/*
Function: xajax.js.call
Call a javascript function with a series of parameters using
the current script context.
Parameters:
args - The response command object containing the following:
- args.data: (array): The parameters to pass to the function.
- args.func: (string): The name of the function to call.
- args.context: (object): The current script context object
which is accessable in the function name via the 'this'
keyword.
Returns:
true - The call completed successfully.
*/
xajax.js.call = function(args) {
args.fullName = 'call js function';
var parameters = args.data;
var scr = new Array();
scr.push(args.func);
scr.push('(');
if ('undefined' != typeof parameters) {
if ('object' == typeof parameters) {
var iLen = parameters.length;
if (0 < iLen) {
scr.push('parameters[0]');
for (var i = 1; i < iLen; ++i)
scr.push(', parameters[' + i + ']');
}
}
}
scr.push(');');
args.context.xajaxDelegateCall = function() {
eval(scr.join(''));
}
args.context.xajaxDelegateCall();
return true;
}
/*
Function: xajax.js.setFunction
Constructs the specified function using the specified javascript
as the body of the function.
Parameters:
args - The response command object which contains the following:
- args.func: (string): The name of the function to construct.
- args.data: (string): The script that will be the function body.
- args.context: (object): The current script context object
which is accessable in the script name via the 'this' keyword.
Returns:
true - The function was constructed successfully.
*/
xajax.js.setFunction = function(args) {
args.fullName = 'setFunction';
var code = new Array();
code.push(args.func);
code.push(' = function(');
if ('object' == typeof args.prop) {
var separator = '';
for (var m in args.prop) {
code.push(separator);
code.push(args.prop[m]);
separator = ',';
}
} else code.push(args.prop);
code.push(') { ');
code.push(args.data);
code.push(' }');
args.context.xajaxDelegateCall = function() {
eval(code.join(''));
}
args.context.xajaxDelegateCall();
return true;
}
/*
Function: xajax.js.wrapFunction
Construct a javascript function which will call the original function with
the same name, potentially executing code before and after the call to the
original function.
Parameters:
args - (object): The response command object which will contain
the following:
- args.func: (string): The name of the function to be wrapped.
- args.prop: (string): List of parameters used when calling the function.
- args.data: (array): The portions of code to be called before, after
or even between calls to the original function.
- args.context: (object): The current script context object which is
accessable in the function name and body via the 'this' keyword.
Returns:
true - The wrapper function was constructed successfully.
*/
xajax.js.wrapFunction = function(args) {
args.fullName = 'wrapFunction';
var code = new Array();
code.push(args.func);
code.push(' = xajax.js.makeWrapper(');
code.push(args.func);
code.push(', args.prop, args.data, args.type, args.context);');
args.context.xajaxDelegateCall = function() {
eval(code.join(''));
}
args.context.xajaxDelegateCall();
return true;
}
/*
Function: xajax.js.makeWrapper
Helper function used in the wrapping of an existing javascript function.
Parameters:
origFun - (string): The name of the original function.
args - (string): The list of parameters used when calling the function.
codeBlocks - (array): Array of strings of javascript code to be executed
before, after and perhaps between calls to the original function.
returnVariable - (string): The name of the variable used to retain the
return value from the call to the original function.
context - (object): The current script context object which is accessable
in the function name and body via the 'this' keyword.
Returns:
object - The complete wrapper function.
*/
xajax.js.makeWrapper = function(origFun, args, codeBlocks, returnVariable, context) {
var originalCall = '';
if (0 < returnVariable.length) {
originalCall += returnVariable;
originalCall += ' = ';
}
var originalCall = 'origFun(';
originalCall += args;
originalCall += '); ';
var code = 'wrapper = function(';
code += args;
code += ') { ';
if (0 < returnVariable.length) {
code += ' var ';
code += returnVariable;
code += ' = null;';
}
var separator = '';
var bLen = codeBlocks.length;
for (var b = 0; b < bLen; ++b) {
code += separator;
code += codeBlocks[b];
separator = originalCall;
}
if (0 < returnVariable.length) {
code += ' return ';
code += returnVariable;
code += ';';
}
code += ' } ';
var wrapper = null;
context.xajaxDelegateCall = function() {
eval(code);
}
context.xajaxDelegateCall();
return wrapper;
}
/*
Class: xajax.dom
*/
xajax.dom = {}
/*
Function: xajax.dom.assign
Assign an element's attribute to the specified value.
Parameters:
element - (object): The HTML element to effect.
property - (string): The name of the attribute to set.
data - (string): The new value to be applied.
Returns:
true - The operation completed successfully.
*/
xajax.dom.assign = function(element, property, data) {
if ('string' == typeof element)
element = xajax.$(element);
switch (property) {
case 'innerHTML':
element.innerHTML = data;
break;
case 'outerHTML':
if ('undefined' == typeof element.outerHTML) {
var r = xajax.config.baseDocument.createRange();
r.setStartBefore(element);
var df = r.createContextualFragment(data);
element.parentNode.replaceChild(df, element);
} else element.outerHTML = data;
break;
default:
if (xajax.tools.willChange(element, property, data))
eval('element.' + property + ' = data;');
break;
}
return true;
}
/*
Function: xajax.dom.append
Append the specified value to an element's attribute.
Parameters:
element - (object): The HTML element to effect.
property - (string): The name of the attribute to append to.
data - (string): The new value to be appended.
Returns:
true - The operation completed successfully.
*/
xajax.dom.append = function(element, property, data) {
if ('string' == typeof element)
element = xajax.$(element);
eval('element.' + property + ' += data;');
return true;
}
/*
Function: xajax.dom.prepend
Prepend the specified value to an element's attribute.
Parameters:
element - (object): The HTML element to effect.
property - (string): The name of the attribute.
data - (string): The new value to be prepended.
Returns:
true - The operation completed successfully.
*/
xajax.dom.prepend = function(element, property, data) {
if ('string' == typeof element)
element = xajax.$(element);
eval('element.' + property + ' = data + element.' + property);
return true;
}
/*
Function: xajax.dom.replace
Search and replace the specified text.
Parameters:
element - (string or object): The name of, or the element itself which is
to be modified.
sAttribute - (string): The name of the attribute to be set.
aData - (array): The search text and replacement text.
Returns:
true - The operation completed successfully.
*/
xajax.dom.replace = function(element, sAttribute, aData) {
var sSearch = aData['s'];
var sReplace = aData['r'];
if (sAttribute == 'innerHTML')
sSearch = xajax.tools.getBrowserHTML(sSearch);
if ('string' == typeof element)
element = xajax.$(element);
eval('var txt = element.' + sAttribute);
var bFunction = false;
if ('function' == typeof txt) {
txt = txt.join('');
bFunction = true;
}
var start = txt.indexOf(sSearch);
if (start > -1) {
var newTxt = [];
while (start > -1) {
var end = start + sSearch.length;
newTxt.push(txt.substr(0, start));
newTxt.push(sReplace);
txt = txt.substr(end, txt.length - end);
start = txt.indexOf(sSearch);
}
newTxt.push(txt);
newTxt = newTxt.join('');
if (bFunction) {
eval('element.' + sAttribute + '=newTxt;');
} else if (xajax.tools.willChange(element, sAttribute, newTxt)) {
eval('element.' + sAttribute + '=newTxt;');
}
}
return true;
}
/*
Function: xajax.dom.remove
Delete an element.
Parameters:
element - (string or object): The name of, or the element itself which
will be deleted.
Returns:
true - The operation completed successfully.
*/
xajax.dom.remove = function(element) {
if ('string' == typeof element)
element = xajax.$(element);
if (element && element.parentNode && element.parentNode.removeChild)
element.parentNode.removeChild(element);
return true;
}
/*
Function: xajax.dom.create
Create a new element and append it to the specified parent element.
Parameters:
objParent - (string or object): The name of, or the element itself
which will contain the new element.
sTag - (string): The tag name for the new element.
sId - (string): The value to be assigned to the id attribute of
the new element.
Returns:
true - The operation completed successfully.
*/
xajax.dom.create = function(objParent, sTag, sId) {
if ('string' == typeof objParent)
objParent = xajax.$(objParent);
var target = xajax.config.baseDocument.createElement(sTag);
target.setAttribute('id', sId);
if (objParent)
objParent.appendChild(target);
return true;
}
/*
Function: xajax.dom.insert
Insert a new element before the specified element.
Parameters:
objSibling - (string or object): The name of, or the element itself
that will be used as the reference point for insertion.
sTag - (string): The tag name for the new element.
sId - (string): The value that will be assigned to the new element's
id attribute.
Returns:
true - The operation completed successfully.
*/
xajax.dom.insert = function(objSibling, sTag, sId) {
if ('string' == typeof objSibling)
objSibling = xajax.$(objSibling);
var target = xajax.config.baseDocument.createElement(sTag);
target.setAttribute('id', sId);
objSibling.parentNode.insertBefore(target, objSibling);
return true;
}
/*
Function: xajax.dom.insertAfter
Insert a new element after the specified element.
Parameters:
objSibling - (string or object): The name of, or the element itself
that will be used as the reference point for insertion.
sTag - (string): The tag name for the new element.
sId - (string): The value that will be assigned to the new element's
id attribute.
Returns:
true - The operation completed successfully.
*/
xajax.dom.insertAfter = function(objSibling, sTag, sId) {
if ('string' == typeof objSibling)
objSibling = xajax.$(objSibling);
var target = xajax.config.baseDocument.createElement(sTag);
target.setAttribute('id', sId);
objSibling.parentNode.insertBefore(target, objSibling.nextSibling);
return true;
}
/*
Function: xajax.dom.contextAssign
Assign a value to a named member of the current script context object.
Parameters:
args - (object): The response command object which will contain the
following:
- args.prop: (string): The name of the member to assign.
- args.data: (string or object): The value to assign to the member.
- args.context: (object): The current script context object which
is accessable via the 'this' keyword.
Returns:
true - The operation completed successfully.
*/
xajax.dom.contextAssign = function(args) {
args.fullName = 'context assign';
var code = [];
code.push('this.');
code.push(args.prop);
code.push(' = data;');
code = code.join('');
args.context.xajaxDelegateCall = function(data) {
eval(code);
}
args.context.xajaxDelegateCall(args.data);
return true;
}
/*
Function: xajax.dom.contextAppend
Appends a value to a named member of the current script context object.
Parameters:
args - (object): The response command object which will contain the
following:
- args.prop: (string): The name of the member to append to.
- args.data: (string or object): The value to append to the member.
- args.context: (object): The current script context object which
is accessable via the 'this' keyword.
Returns:
true - The operation completed successfully.
*/
xajax.dom.contextAppend = function(args) {
args.fullName = 'context append';
var code = [];
code.push('this.');
code.push(args.prop);
code.push(' += data;');
code = code.join('');
args.context.xajaxDelegateCall = function(data) {
eval(code);
}
args.context.xajaxDelegateCall(args.data);
return true;
}
/*
Function: xajax.dom.contextPrepend
Prepend a value to a named member of the current script context object.
Parameters:
args - (object): The response command object which will contain the
following:
- args.prop: (string): The name of the member to prepend to.
- args.data: (string or object): The value to prepend to the member.
- args.context: (object): The current script context object which
is accessable via the 'this' keyword.
Returns:
true - The operation completed successfully.
*/
xajax.dom.contextPrepend = function(args) {
args.fullName = 'context prepend';
var code = [];
code.push('this.');
code.push(args.prop);
code.push(' = data + this.');
code.push(args.prop);
code.push(';');
code = code.join('');
args.context.xajaxDelegateCall = function(data) {
eval(code);
}
args.context.xajaxDelegateCall(args.data);
return true;
}
/*
Class: xajax.css
*/
xajax.css = {}
/*
Function: xajax.css.add
Add a LINK reference to the specified .css file if it does not
already exist in the HEAD of the current document.
Parameters:
filename - (string): The URI of the .css file to reference.
media - (string): The media type of the css file (print/screen/handheld,..)
Returns:
true - The operation completed successfully.
*/
xajax.css.add = function(fileName, media) {
var oDoc = xajax.config.baseDocument;
var oHeads = oDoc.getElementsByTagName('head');
var oHead = oHeads[0];
var oLinks = oHead.getElementsByTagName('link');
var found = false;
var iLen = oLinks.length;
for (var i = 0; i < iLen && false == found; ++i)
if (0 <= oLinks[i].href.indexOf(fileName) && oLinks[i].media == media)
found = true;
if (false == found) {
var oCSS = oDoc.createElement('link');
oCSS.rel = 'stylesheet';
oCSS.type = 'text/css';
oCSS.href = fileName;
oCSS.media = media;
oHead.appendChild(oCSS);
}
return true;
}
/*
Function: xajax.css.remove
Locate and remove a LINK reference from the current document's
HEAD.
Parameters:
filename - (string): The URI of the .css file.
Returns:
true - The operation completed successfully.
*/
xajax.css.remove = function(fileName, media) {
var oDoc = xajax.config.baseDocument;
var oHeads = oDoc.getElementsByTagName('head');
var oHead = oHeads[0];
var oLinks = oHead.getElementsByTagName('link');
var i = 0;
while (i < oLinks.length)
if (0 <= oLinks[i].href.indexOf(fileName) && oLinks[i].media == media)
oHead.removeChild(oLinks[i]);
else ++i;
return true;
}
/*
Function: xajax.css.waitForCSS
Attempt to detect when all .css files have been loaded once
they are referenced by a LINK tag in the HEAD of the current
document.
Parameters:
args - (object): The response command object which will contain
the following:
- args.prop - (integer): The number of 1/10ths of a second
to wait before giving up.
Returns:
true - The .css files appear to be loaded.
false - The .css files do not appear to be loaded and the timeout
has not expired.
*/
xajax.css.waitForCSS = function(args) {
var oDocSS = xajax.config.baseDocument.styleSheets;
var ssEnabled = [];
var iLen = oDocSS.length;
for (var i = 0; i < iLen; ++i) {
ssEnabled[i] = 0;
try {
ssEnabled[i] = oDocSS[i].cssRules.length;
} catch (e) {
try {
ssEnabled[i] = oDocSS[i].rules.length;
} catch (e) {
}
}
}
var ssLoaded = true;
var iLen = ssEnabled.length;
for (var i = 0; i < iLen; ++i)
if (0 == ssEnabled[i])
ssLoaded = false;
if (false == ssLoaded) {
// inject a delay in the queue processing
// handle retry counter
if (xajax.tools.queue.retry(args, args.prop)) {
xajax.tools.queue.setWakeup(xajax.response, 10);
return false;
}
// give up, continue processing queue
}
return true;
}
/*
Class: xajax.forms
*/
xajax.forms = {}
/*
Function: xajax.forms.getInput
Create and return a form input element with the specified parameters.
Parameters:
type - (string): The type of input element desired.
name - (string): The value to be assigned to the name attribute.
id - (string): The value to be assigned to the id attribute.
Returns:
object - The new input element.
*/
xajax.forms.getInput = function(type, name, id) {
if ('undefined' == typeof window.addEventListener) {
xajax.forms.getInput = function(type, name, id) {
return xajax.config.baseDocument.createElement('<input type="'+type+'" name="'+name+'" id="'+id+'">');
}
} else {
xajax.forms.getInput = function(type, name, id) {
var oDoc = xajax.config.baseDocument;
var Obj = oDoc.createElement('input');
Obj.setAttribute('type', type);
Obj.setAttribute('name', name);
Obj.setAttribute('id', id);
return Obj;
}
}
return xajax.forms.getInput(type, name, id);
}
/*
Function: xajax.forms.createInput
Create a new input element under the specified parent.
Parameters:
objParent - (string or object): The name of, or the element itself
that will be used as the reference for the insertion.
sType - (string): The value to be assigned to the type attribute.
sName - (string): The value to be assigned to the name attribute.
sId - (string): The value to be assigned to the id attribute.
Returns:
true - The operation completed successfully.
*/
xajax.forms.createInput = function(command) {
command.fullName = 'createInput';
var objParent = command.id;
var sType = command.type;
var sName = command.data;
var sId = command.prop;
if ('string' == typeof objParent)
objParent = xajax.$(objParent);
var target = xajax.forms.getInput(sType, sName, sId);
if (objParent && target)
{
objParent.appendChild(target);
}
return true;
}
/*
Function: xajax.forms.insertInput
Insert a new input element before the specified element.
Parameters:
objSibling - (string or object): The name of, or the element itself
that will be used as the reference for the insertion.
sType - (string): The value to be assigned to the type attribute.
sName - (string): The value to be assigned to the name attribute.
sId - (string): The value to be assigned to the id attribute.
Returns:
true - The operation completed successfully.
*/
xajax.forms.insertInput = function(command) {
command.fullName = 'insertInput';
var objSibling = command.id;
var sType = command.type;
var sName = command.data;
var sId = command.prop;
if ('string' == typeof objSibling)
objSibling = xajax.$(objSibling);
var target = xajax.forms.getInput(sType, sName, sId);
if (target && objSibling && objSibling.parentNode)
objSibling.parentNode.insertBefore(target, objSibling);
return true;
}
/*
Function: xajax.forms.insertInputAfter
Insert a new input element after the specified element.
Parameters:
objSibling - (string or object): The name of, or the element itself
that will be used as the reference for the insertion.
sType - (string): The value to be assigned to the type attribute.
sName - (string): The value to be assigned to the name attribute.
sId - (string): The value to be assigned to the id attribute.
Returns:
true - The operation completed successfully.
*/
xajax.forms.insertInputAfter = function(command) {
command.fullName = 'insertInputAfter';
var objSibling = command.id;
var sType = command.type;
var sName = command.data;
var sId = command.prop;
if ('string' == typeof objSibling)
objSibling = xajax.$(objSibling);
var target = xajax.forms.getInput(sType, sName, sId);
if (target && objSibling && objSibling.parentNode)
objSibling.parentNode.insertBefore(target, objSibling.nextSibling);
return true;
}
/*
Class: xajax.events
*/
xajax.events = {}
/*
Function: xajax.events.setEvent
Set an event handler.
Parameters:
command - (object): Response command object.
- id: Element ID
- prop: Event
- data: Code
Returns:
true - The operation completed successfully.
*/
xajax.events.setEvent = function(command) {
command.fullName = 'addEvent';
var element = command.id;
var sEvent = command.prop;
var code = command.data;
if ('string' == typeof element)
element = xajax.$(element);
sEvent = xajax.tools.addOnPrefix(sEvent);
code = xajax.tools.doubleQuotes(code);
eval('element.' + sEvent + ' = function() { ' + code + '; }');
return true;
}
/*
Function: xajax.events.addHandler
Add an event handler to the specified element.
Parameters:
element - (string or object): The name of, or the element itself
which will have the event handler assigned.
sEvent - (string): The name of the event.
fun - (string): The function to be called.
Returns:
true - The operation completed successfully.
*/
xajax.events.addHandler = function(element, sEvent, fun) {
if (window.addEventListener) {
xajax.events.addHandler = function(command) {
command.fullName = 'addHandler';
var element = command.id;
var sEvent = command.prop;
var fun = command.data;
if ('string' == typeof element)
element = xajax.$(element);
sEvent = xajax.tools.stripOnPrefix(sEvent);
eval('element.addEventListener("' + sEvent + '", ' + fun + ', false);');
return true;
}
} else {
xajax.events.addHandler = function(command) {
command.fullName = 'addHandler';
var element = command.id;
var sEvent = command.prop;
var fun = command.data;
if ('string' == typeof element)
element = xajax.$(element);
sEvent = xajax.tools.addOnPrefix(sEvent);
eval('element.attachEvent("' + sEvent + '", ' + fun + ', false);');
return true;
}
}
return xajax.events.addHandler(element, sEvent, fun);
}
/*
Function: xajax.events.removeHandler
Remove an event handler from an element.
Parameters:
element - (string or object): The name of, or the element itself which
will have the event handler removed.
event - (string): The name of the event for which this handler is
associated.
fun - The function to be removed.
Returns:
true - The operation completed successfully.
*/
xajax.events.removeHandler = function(element, sEvent, fun) {
if (window.removeEventListener) {
xajax.events.removeHandler = function(command) {
command.fullName = 'removeHandler';
var element = command.id;
var sEvent = command.prop;
var fun = command.data;
if ('string' == typeof element)
element = xajax.$(element);
sEvent = xajax.tools.stripOnPrefix(sEvent);
eval('element.removeEventListener("' + sEvent + '", ' + fun + ', false);');
return true;
}
} else {
xajax.events.removeHandler = function(command) {
command.fullName = 'removeHandler';
var element = command.id;
var sEvent = command.prop;
var fun = command.data;
if ('string' == typeof element)
element = xajax.$(element);
sEvent = xajax.tools.addOnPrefix(sEvent);
eval('element.detachEvent("' + sEvent + '", ' + fun + ', false);');
return true;
}
}
return xajax.events.removeHandler(element, sEvent, fun);
}
/*
Class: xajax.callback
*/
xajax.callback = {}
/*
Function: xajax.callback.create
Create a blank callback object. Two optional arguments let you
set the delay time for the onResponseDelay and onExpiration events.
Returns:
object - The callback object.
*/
xajax.callback.create = function() {
var xx = xajax;
var xc = xx.config;
var xcb = xx.callback;
var oCB = {}
oCB.timers = {};
oCB.timers.onResponseDelay = xcb.setupTimer(
(arguments.length > 0)
? arguments[0]
: xc.defaultResponseDelayTime);
oCB.timers.onExpiration = xcb.setupTimer(
(arguments.length > 1)
? arguments[1]
: xc.defaultExpirationTime);
oCB.onRequest = null;
oCB.onResponseDelay = null;
oCB.onExpiration = null;
oCB.beforeResponseProcessing = null;
oCB.onFailure = null;
oCB.onRedirect = null;
oCB.onSuccess = null;
oCB.onComplete = null;
return oCB;
}
/*
Function: xajax.callback.setupTimer
Create a timer to fire an event in the future. This will
be used fire the onRequestDelay and onExpiration events.
Parameters:
iDelay - (integer): The amount of time in milliseconds to delay.
Returns:
object - A callback timer object.
*/
xajax.callback.setupTimer = function(iDelay)
{
return { timer: null, delay: iDelay };
}
/*
Function: xajax.callback.clearTimer
Clear a callback timer for the specified function.
Parameters:
oCallback - (object): The callback object (or objects) that
contain the specified function timer to be cleared.
sFunction - (string): The name of the function associated
with the timer to be cleared.
*/
xajax.callback.clearTimer = function(oCallback, sFunction)
{
if ('undefined' != typeof oCallback.timers) {
if ('undefined' != typeof oCallback.timers[sFunction]) {
clearTimeout(oCallback.timers[sFunction].timer);
}
} else if ('object' == typeof oCallback) {
var iLen = oCallback.length;
for (var i = 0; i < iLen; ++i)
xajax.callback.clearTimer(oCallback[i], sFunction);
}
}
/*
Function: xajax.callback.execute
Execute a callback event.
Parameters:
oCallback - (object): The callback object (or objects) which
contain the event handlers to be executed.
sFunction - (string): The name of the event to be triggered.
args - (object): The request object for this request.
*/
xajax.callback.execute = function(oCallback, sFunction, args) {
if ('undefined' != typeof oCallback[sFunction]) {
var func = oCallback[sFunction];
if ('function' == typeof func) {
if ('undefined' != typeof oCallback.timers[sFunction]) {
oCallback.timers[sFunction].timer = setTimeout(function() {
func(args);
}, oCallback.timers[sFunction].delay);
}
else {
func(args);
}
}
} else if ('object' == typeof oCallback) {
var iLen = oCallback.length;
for (var i = 0; i < iLen; ++i)
xajax.callback.execute(oCallback[i], sFunction, args);
}
}
/*
Class: xajax.callback.global
The global callback object which is active for every request.
*/
xajax.callback.global = xajax.callback.create();
/*
Class: xajax
*/
/*
Object: xajax.response
The response queue that holds response commands, once received
from the server, until they are processed.
*/
xajax.response = xajax.tools.queue.create(xajax.config.responseQueueSize);
/*
Object: responseSuccessCodes
This array contains a list of codes which will be returned from the
server upon successful completion of the server portion of the
request.
These values should match those specified in the HTTP standard.
*/
xajax.responseSuccessCodes = ['0', '200'];
// 10.4.1 400 Bad Request
// 10.4.2 401 Unauthorized
// 10.4.3 402 Payment Required
// 10.4.4 403 Forbidden
// 10.4.5 404 Not Found
// 10.4.6 405 Method Not Allowed
// 10.4.7 406 Not Acceptable
// 10.4.8 407 Proxy Authentication Required
// 10.4.9 408 Request Timeout
// 10.4.10 409 Conflict
// 10.4.11 410 Gone
// 10.4.12 411 Length Required
// 10.4.13 412 Precondition Failed
// 10.4.14 413 Request Entity Too Large
// 10.4.15 414 Request-URI Too Long
// 10.4.16 415 Unsupported Media Type
// 10.4.17 416 Requested Range Not Satisfiable
// 10.4.18 417 Expectation Failed
// 10.5 Server Error 5xx
// 10.5.1 500 Internal Server Error
// 10.5.2 501 Not Implemented
// 10.5.3 502 Bad Gateway
// 10.5.4 503 Service Unavailable
// 10.5.5 504 Gateway Timeout
// 10.5.6 505 HTTP Version Not Supported
/*
Object: responseErrorsForAlert
This array contains a list of status codes returned by
the server to indicate that the request failed for some
reason.
*/
xajax.responseErrorsForAlert = ['400','401','402','403','404','500','501','502','503'];
// 10.3.1 300 Multiple Choices
// 10.3.2 301 Moved Permanently
// 10.3.3 302 Found
// 10.3.4 303 See Other
// 10.3.5 304 Not Modified
// 10.3.6 305 Use Proxy
// 10.3.7 306 (Unused)
// 10.3.8 307 Temporary Redirect
/*
Object: responseRedirectCodes
An array of status codes returned from the server to
indicate a request for redirect to another URL.
Typically, this is used by the server to send the browser
to another URL. This does not typically indicate that
the xajax request should be sent to another URL.
*/
xajax.responseRedirectCodes = ['301','302','307'];
/*
Class: xajax.command
The object that manages commands and command handlers.
*/
if ('undefined' == typeof xajax.command)
xajax.command = {};
/*
Function: xajax.command.create
Creates a new command (object) that will be populated with
command parameters and eventually passed to the command handler.
*/
xajax.command.create = function(sequence, request, context) {
var newCmd = {};
newCmd.cmd = '*';
newCmd.fullName = '* unknown command name *';
newCmd.sequence = sequence;
newCmd.request = request;
newCmd.context = context;
return newCmd;
}
/*
Class: xajax.command.handler
The object that manages command handlers.
*/
if ('undefined' == typeof xajax.command.handler)
xajax.command.handler = {};
/*
Object: handlers
An array that is used internally in the xajax.command.handler object
to keep track of command handlers that have been registered.
*/
if ('undefined' == typeof xajax.command.handler.handlers)
xajax.command.handler.handlers = [];
/*
Function: xajax.command.handler.register
Registers a new command handler.
*/
xajax.command.handler.register = function(shortName, func) {
xajax.command.handler.handlers[shortName] = func;
}
/*
Function: xajax.command.handler.unregister
Unregisters and returns a command handler.
Parameters:
shortName - (string): The name of the command handler.
Returns:
func - (function): The unregistered function.
*/
xajax.command.handler.unregister = function(shortName) {
var func = xajax.command.handler.handlers[shortName];
delete xajax.command.handler.handlers[shortName];
return func;
}
/*
Function: xajax.command.handler.isRegistered
Parameters:
command - (object):
- cmd: The Name of the function.
Returns:
boolean - (true or false): depending on whether a command handler has
been created for the specified command (object).
*/
xajax.command.handler.isRegistered = function(command) {
var shortName = command.cmd;
if (xajax.command.handler.handlers[shortName])
return true;
return false;
}
/*
Function: xajax.command.handler.call
Calls the registered command handler for the specified command
(you should always check isRegistered before calling this function)
Parameters:
command - (object):
- cmd: The Name of the function.
Returns:
true - (boolean) :
*/
xajax.command.handler.call = function(command) {
var shortName = command.cmd;
return xajax.command.handler.handlers[shortName](command);
}
xajax.command.handler.register('rcmplt', function(args) {
xajax.completeResponse(args.request);
return true;
});
xajax.command.handler.register('css', function(args) {
args.fullName = 'includeCSS';
if ('undefined' == typeof args.media)
args.media = 'screen';
return xajax.css.add(args.data, args.media);
});
xajax.command.handler.register('rcss', function(args) {
args.fullName = 'removeCSS';
if ('undefined' == typeof args.media)
args.media = 'screen';
return xajax.css.remove(args.data, args.media);
});
xajax.command.handler.register('wcss', function(args) {
args.fullName = 'waitForCSS';
return xajax.css.waitForCSS(args);
});
xajax.command.handler.register('as', function(args) {
args.fullName = 'assign/clear';
try {
return xajax.dom.assign(args.target, args.prop, args.data);
} catch (e) {
// do nothing, if the debug module is installed it will
// catch and handle the exception
}
return true;
});
xajax.command.handler.register('ap', function(args) {
args.fullName = 'append';
return xajax.dom.append(args.target, args.prop, args.data);
});
xajax.command.handler.register('pp', function(args) {
args.fullName = 'prepend';
return xajax.dom.prepend(args.target, args.prop, args.data);
});
xajax.command.handler.register('rp', function(args) {
args.fullName = 'replace';
return xajax.dom.replace(args.id, args.prop, args.data);
});
xajax.command.handler.register('rm', function(args) {
args.fullName = 'remove';
return xajax.dom.remove(args.id);
});
xajax.command.handler.register('ce', function(args) {
args.fullName = 'create';
return xajax.dom.create(args.id, args.data, args.prop);
});
xajax.command.handler.register('ie', function(args) {
args.fullName = 'insert';
return xajax.dom.insert(args.id, args.data, args.prop);
});
xajax.command.handler.register('ia', function(args) {
args.fullName = 'insertAfter';
return xajax.dom.insertAfter(args.id, args.data, args.prop);
});
xajax.command.handler.register('c:as', xajax.dom.contextAssign);
xajax.command.handler.register('c:ap', xajax.dom.contextAppend);
xajax.command.handler.register('c:pp', xajax.dom.contextPrepend);
xajax.command.handler.register('s', xajax.js.sleep);
xajax.command.handler.register('ino', xajax.js.includeScriptOnce);
xajax.command.handler.register('in', xajax.js.includeScript);
xajax.command.handler.register('rjs', xajax.js.removeScript);
xajax.command.handler.register('wf', xajax.js.waitFor);
xajax.command.handler.register('js', xajax.js.execute);
xajax.command.handler.register('jc', xajax.js.call);
xajax.command.handler.register('sf', xajax.js.setFunction);
xajax.command.handler.register('wpf', xajax.js.wrapFunction);
xajax.command.handler.register('al', function(args) {
args.fullName = 'alert';
alert(args.data);
return true;
});
xajax.command.handler.register('cc', xajax.js.confirmCommands);
xajax.command.handler.register('ci', xajax.forms.createInput);
xajax.command.handler.register('ii', xajax.forms.insertInput);
xajax.command.handler.register('iia', xajax.forms.insertInputAfter);
xajax.command.handler.register('ev', xajax.events.setEvent);
xajax.command.handler.register('ah', xajax.events.addHandler);
xajax.command.handler.register('rh', xajax.events.removeHandler);
xajax.command.handler.register('dbg', function(args) {
args.fullName = 'debug message';
return true;
});
/*
Function: xajax.initializeRequest
Initialize a request object, populating default settings, where
call specific settings are not already provided.
Parameters:
oRequest - (object): An object that specifies call specific settings
that will, in addition, be used to store all request related
values. This includes temporary values used internally by xajax.
*/
xajax.initializeRequest = function(oRequest) {
var xx = xajax;
var xc = xx.config;
oRequest.append = function(opt, def) {
if ('undefined' != typeof this[opt]) {
for (var itmName in def)
if ('undefined' == typeof this[opt][itmName])
this[opt][itmName] = def[itmName];
} else this[opt] = def;
}
oRequest.append('commonHeaders', xc.commonHeaders);
oRequest.append('postHeaders', xc.postHeaders);
oRequest.append('getHeaders', xc.getHeaders);
oRequest.set = function(option, defaultValue) {
if ('undefined' == typeof this[option])
this[option] = defaultValue;
}
oRequest.set('statusMessages', xc.statusMessages);
oRequest.set('waitCursor', xc.waitCursor);
oRequest.set('mode', xc.defaultMode);
oRequest.set('method', xc.defaultMethod);
oRequest.set('URI', xc.requestURI);
oRequest.set('httpVersion', xc.defaultHttpVersion);
oRequest.set('contentType', xc.defaultContentType);
oRequest.set('retry', xc.defaultRetry);
oRequest.set('returnValue', xc.defaultReturnValue);
oRequest.set('maxObjectDepth', xc.maxObjectDepth);
oRequest.set('maxObjectSize', xc.maxObjectSize);
oRequest.set('context', window);
var xcb = xx.callback;
var gcb = xcb.global;
var lcb = xcb.create();
lcb.take = function(frm, opt) {
if ('undefined' != typeof frm[opt]) {
lcb[opt] = frm[opt];
lcb.hasEvents = true;
}
delete frm[opt];
}
lcb.take(oRequest, 'onRequest');
lcb.take(oRequest, 'onResponseDelay');
lcb.take(oRequest, 'onExpiration');
lcb.take(oRequest, 'beforeResponseProcessing');
lcb.take(oRequest, 'onFailure');
lcb.take(oRequest, 'onRedirect');
lcb.take(oRequest, 'onSuccess');
lcb.take(oRequest, 'onComplete');
if ('undefined' != typeof oRequest.callback) {
if (lcb.hasEvents)
oRequest.callback = [oRequest.callback, lcb];
} else
oRequest.callback = lcb;
oRequest.status = (oRequest.statusMessages)
? xc.status.update()
: xc.status.dontUpdate();
oRequest.cursor = (oRequest.waitCursor)
? xc.cursor.update()
: xc.cursor.dontUpdate();
oRequest.method = oRequest.method.toUpperCase();
if ('GET' != oRequest.method)
oRequest.method = 'POST'; // W3C: Method is case sensitive
oRequest.requestRetry = oRequest.retry;
oRequest.append('postHeaders', {
'content-type': oRequest.contentType
});
delete oRequest['append'];
delete oRequest['set'];
delete oRequest['take'];
if ('undefined' == typeof oRequest.URI)
throw { code: 10005 }
}
/*
Function: xajax.processParameters
Processes request specific parameters and generates the temporary
variables needed by xajax to initiate and process the request.
Parameters:
oRequest - A request object, created initially by a call to
<xajax.initializeRequest>
Note:
This is called once per request; upon a request failure, this
will not be called for additional retries.
*/
xajax.processParameters = function(oRequest) {
var xx = xajax;
var xt = xx.tools;
var rd = [];
var separator = '';
for (var sCommand in oRequest.functionName) {
if ('constructor' != sCommand) {
rd.push(separator);
rd.push(sCommand);
rd.push('=');
rd.push(encodeURIComponent(oRequest.functionName[sCommand]));
separator = '&';
}
}
var dNow = new Date();
rd.push('&xjxr=');
rd.push(dNow.getTime());
delete dNow;
if (oRequest.parameters) {
var i = 0;
var iLen = oRequest.parameters.length;
while (i < iLen) {
var oVal = oRequest.parameters[i];
if ('object' == typeof oVal && null != oVal) {
try {
var oGuard = {};
oGuard.depth = 0;
oGuard.maxDepth = oRequest.maxObjectDepth;
oGuard.size = 0;
oGuard.maxSize = oRequest.maxObjectSize;
oVal = xt._objectToXML(oVal, oGuard);
} catch (e) {
oVal = '';
// do nothing, if the debug module is installed
// it will catch the exception and handle it
}
rd.push('&xjxargs[]=');
oVal = encodeURIComponent(oVal);
rd.push(oVal);
++i;
} else {
rd.push('&xjxargs[]=');
oVal = xt._escape(oVal);
if ('undefined' == typeof oVal || null == oVal) {
rd.push('*');
} else {
var sType = typeof oVal;
if ('string' == sType)
rd.push('S');
else if ('boolean' == sType)
rd.push('B');
else if ('number' == sType)
rd.push('N');
oVal = encodeURIComponent(oVal);
rd.push(oVal);
}
++i;
}
}
}
oRequest.requestURI = oRequest.URI;
if ('GET' == oRequest.method) {
oRequest.requestURI += oRequest.requestURI.indexOf('?')== -1 ? '?' : '&';
oRequest.requestURI += rd.join('');
rd = [];
}
oRequest.requestData = rd.join('');
}
/*
Function: xajax.prepareRequest
Prepares the XMLHttpRequest object for this xajax request.
Parameters:
oRequest - (object): An object created by a call to <xajax.initializeRequest>
which already contains the necessary parameters and temporary variables
needed to initiate and process a xajax request.
Note:
This is called each time a request object is being prepared for a
call to the server. If the request is retried, the request must be
prepared again.
*/
xajax.prepareRequest = function(oRequest) {
var xx = xajax;
var xt = xx.tools;
oRequest.request = xt.getRequestObject();
oRequest.setRequestHeaders = function(headers) {
if ('object' == typeof headers) {
for (var optionName in headers)
this.request.setRequestHeader(optionName, headers[optionName]);
}
}
oRequest.setCommonRequestHeaders = function() {
this.setRequestHeaders(this.commonHeaders);
}
oRequest.setPostRequestHeaders = function() {
this.setRequestHeaders(this.postHeaders);
}
oRequest.setGetRequestHeaders = function() {
this.setRequestHeaders(this.getHeaders);
}
if ('asynchronous' == oRequest.mode) {
// references inside this function should be expanded
// IOW, don't use shorthand references like xx for xajax
oRequest.request.onreadystatechange = function() {
if (oRequest.request.readyState != 4)
return;
xajax.responseReceived(oRequest);
}
oRequest.finishRequest = function() {
return this.returnValue;
}
} else {
oRequest.finishRequest = function() {
return xajax.responseReceived(oRequest);
}
}
if ('undefined' != typeof oRequest.userName && 'undefined' != typeof oRequest.password) {
oRequest.open = function() {
this.request.open(
this.method,
this.requestURI,
'asynchronous' == this.mode,
oRequest.userName,
oRequest.password);
}
} else {
oRequest.open = function() {
this.request.open(
this.method,
this.requestURI,
'asynchronous' == this.mode);
}
}
if ('POST' == oRequest.method) { // W3C: Method is case sensitive
oRequest.applyRequestHeaders = function() {
this.setCommonRequestHeaders();
try {
this.setPostRequestHeaders();
} catch (e) {
this.method = 'GET';
this.requestURI += this.requestURI.indexOf('?')== -1 ? '?' : '&';
this.requestURI += this.requestData;
this.requestData = '';
if (0 == this.requestRetry) this.requestRetry = 1;
throw e;
}
}
} else {
oRequest.applyRequestHeaders = function() {
this.setCommonRequestHeaders();
this.setGetRequestHeaders();
}
}
}
/*
Function: xajax.request
Initiates a request to the server.
Parameters:
functionName - (object): An object containing the name of the function to execute
on the server. The standard request is: {xjxfun:'function_name'}
oRequest - (object, optional): A request object which
may contain call specific parameters. This object will be
used by xajax to store all the request parameters as well
as temporary variables needed during the processing of the
request.
*/
xajax.request = function() {
var numArgs = arguments.length;
if (0 == numArgs)
return false;
var oRequest = {}
if (1 < numArgs)
oRequest = arguments[1];
oRequest.functionName = arguments[0];
var xx = xajax;
xx.initializeRequest(oRequest);
xx.processParameters(oRequest);
while (0 < oRequest.requestRetry) {
try {
--oRequest.requestRetry;
xx.prepareRequest(oRequest);
return xx.submitRequest(oRequest);
} catch (e) {
xajax.callback.execute(
[xajax.callback.global, oRequest.callback],
'onFailure', oRequest);
if (0 == oRequest.requestRetry)
throw e;
}
}
}
/*
Function: xajax.call
Initiates a call to the server.
Parameters:
sFunctionName - (string): The name of the function to execute
on the server.
oRequestOptions - (object, optional): A request object which
may contain call specific parameters. This object will be
used by xajax to store all the request parameters as well
as temporary variables needed during the processing of the
request.
Returns:
unknown - For asynchronous calls, the return value will always
be the value set for <xajax.config.defaultReturnValue>
*/
xajax.call = function() {
var numArgs = arguments.length;
if (0 == numArgs)
return false;
var oRequest = {}
if (1 < numArgs)
oRequest = arguments[1];
oRequest.functionName = { xjxfun: arguments[0] };
var xx = xajax;
xx.initializeRequest(oRequest);
xx.processParameters(oRequest);
while (0 < oRequest.requestRetry) {
try {
--oRequest.requestRetry;
xx.prepareRequest(oRequest);
return xx.submitRequest(oRequest);
} catch (e) {
xajax.callback.execute(
[xajax.callback.global, oRequest.callback],
'onFailure', oRequest);
if (0 == oRequest.requestRetry)
throw e;
}
}
}
/*
Function: xajax.submitRequest
Create a request object and submit the request using the specified
request type; all request parameters should be finalized by this
point. Upon failure of a POST, this function will fall back to a
GET request.
Parameters:
oRequest - (object): The request context object.
*/
xajax.submitRequest = function(oRequest) {
oRequest.status.onRequest();
var xcb = xajax.callback;
var gcb = xcb.global;
var lcb = oRequest.callback;
xcb.execute([gcb, lcb], 'onResponseDelay', oRequest);
xcb.execute([gcb, lcb], 'onExpiration', oRequest);
xcb.execute([gcb, lcb], 'onRequest', oRequest);
oRequest.open();
oRequest.applyRequestHeaders();
oRequest.cursor.onWaiting();
oRequest.status.onWaiting();
xajax._internalSend(oRequest);
// synchronous mode causes response to be processed immediately here
return oRequest.finishRequest();
}
/*
Function: xajax._internalSend
This function is used internally by xajax to initiate a request to the
server.
Parameters:
oRequest - (object): The request context object.
*/
xajax._internalSend = function(oRequest) {
// this may block if synchronous mode is selected
oRequest.request.send(oRequest.requestData);
}
/*
Function: xajax.abortRequest
Abort the request.
Parameters:
oRequest - (object): The request context object.
*/
xajax.abortRequest = function(oRequest)
{
oRequest.aborted = true;
oRequest.request.abort();
xajax.completeResponse(oRequest);
}
/*
Function: xajax.responseReceived
Process the response.
Parameters:
oRequest - (object): The request context object.
*/
xajax.responseReceived = function(oRequest) {
var xx = xajax;
var xcb = xx.callback;
var gcb = xcb.global;
var lcb = oRequest.callback;
// sometimes the responseReceived gets called when the
// request is aborted
if (oRequest.aborted)
return;
xcb.clearTimer([gcb, lcb], 'onExpiration');
xcb.clearTimer([gcb, lcb], 'onResponseDelay');
xcb.execute([gcb, lcb], 'beforeResponseProcessing', oRequest);
var fProc = xx.getResponseProcessor(oRequest);
if ('undefined' == typeof fProc) {
xcb.execute([gcb, lcb], 'onFailure', oRequest);
xx.completeResponse(oRequest);
return;
}
return fProc(oRequest);
}
/*
Function: xajax.getResponseProcessor
This function attempts to determine, based on the content type of the
reponse, what processor should be used for handling the response data.
The default xajax response will be text/xml which will invoke the
xajax xml response processor. Other response processors may be added
in the future. The user can specify their own response processor on
a call by call basis.
Parameters:
oRequest - (object): The request context object.
*/
xajax.getResponseProcessor = function(oRequest) {
var fProc;
if ('undefined' == typeof oRequest.responseProcessor) {
var cTyp = oRequest.request.getResponseHeader('content-type');
if (cTyp) {
if (0 <= cTyp.indexOf('text/xml')) {
fProc = xajax.responseProcessor.xml;
// } else if (0 <= cTyp.indexOf('application/json')) {
// fProc = xajax.responseProcessor.json;
}
}
} else fProc = oRequest.responseProcessor;
return fProc;
}
/*
Function: xajax.executeCommand
Perform a lookup on the command specified by the response command
object passed in the first parameter. If the command exists, the
function checks to see if the command references a DOM object by
ID; if so, the object is located within the DOM and added to the
command data. The command handler is then called.
If the command handler returns true, it is assumed that the command
completed successfully. If the command handler returns false, then the
command is considered pending; xajax enters a wait state. It is up
to the command handler to set an interval, timeout or event handler
which will restart the xajax response processing.
Parameters:
obj - (object): The response command to be executed.
Returns:
true - The command completed successfully.
false - The command signalled that it needs to pause processing.
*/
xajax.executeCommand = function(command) {
if (xajax.command.handler.isRegistered(command)) {
// it is important to grab the element here as the previous command
// might have just created the element
if (command.id)
command.target = xajax.$(command.id);
// process the command
if (false == xajax.command.handler.call(command)) {
xajax.tools.queue.pushFront(xajax.response, command);
return false;
}
}
return true;
}
/*
Function: xajax.completeResponse
Called by the response command queue processor when all commands have
been processed.
Parameters:
oRequest - (object): The request context object.
*/
xajax.completeResponse = function(oRequest) {
xajax.callback.execute(
[xajax.callback.global, oRequest.callback],
'onComplete', oRequest);
oRequest.cursor.onComplete();
oRequest.status.onComplete();
// clean up -- these items are restored when the request is initiated
delete oRequest['functionName'];
delete oRequest['requestURI'];
delete oRequest['requestData'];
delete oRequest['requestRetry'];
delete oRequest['request'];
delete oRequest['set'];
delete oRequest['open'];
delete oRequest['setRequestHeaders'];
delete oRequest['setCommonRequestHeaders'];
delete oRequest['setPostRequestHeaders'];
delete oRequest['setGetRequestHeaders'];
delete oRequest['applyRequestHeaders'];
delete oRequest['finishRequest'];
delete oRequest['status'];
delete oRequest['cursor'];
}
/*
Function: xajax.$
Shortcut to <xajax.tools.$>.
*/
xajax.$ = xajax.tools.$;
/*
Function: xajax.getFormValues
Shortcut to <xajax.tools.getFormValues>.
*/
xajax.getFormValues = xajax.tools.getFormValues;
/*
Boolean: xajax.isLoaded
true - xajax module is loaded.
*/
xajax.isLoaded = true;
/*
Class: xjx
Contains shortcut's to frequently used functions.
*/
xjx = {}
/*
Function: xjx.$
Shortcut to <xajax.tools.$>.
*/
xjx.$ = xajax.tools.$;
/*
Function: xjx.getFormValues
Shortcut to <xajax.tools.getFormValues>.
*/
xjx.getFormValues = xajax.tools.getFormValues;
/*
Function: xjx.call
Shortcut to <xajax.call>.
*/
xjx.call = xajax.call;
xjx.request = xajax.request;
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