Ext.js
Ext = {};
// for old browsers
window["undefined"] = window["undefined"];
/**
* @class Ext
* Ext core utilties and functions
* @singleton
*/
// holder
/***
* Copies all the properties of config to obj.
* @param {Object} obj The receiver of the properties
* @param {Object} config The source of the properties
* @param {Object} defaults A different object that will also be applied for default values
* @return {Object} returns obj
* @member Ext apply
*/
Ext.apply = function(o, c, defaults){
if(defaults){
// no "this" reference for friendly out of scope calls
Ext.apply(o, defaults);
}
if(o && c && typeof c == 'object'){
for(var p in c){
o[p] = c[p];
}
}
return o;
};
(function(){
var idSeed = 0;
var ua = navigator.userAgent.toLowerCase();
var isStrict = document.compatMode == "CSS1Compat",
isOpera = ua.indexOf("opera") > -1,
isSafari = (/webkit|khtml/).test(ua),
isIE = ua.indexOf("msie") > -1,
isIE7 = ua.indexOf("msie 7") > -1,
isGecko = !isSafari && ua.indexOf("gecko") > -1,
isBorderBox = isIE && !isStrict,
isWindows = (ua.indexOf("windows") != -1 || ua.indexOf("win32") != -1),
isMac = (ua.indexOf("macintosh") != -1 || ua.indexOf("mac os x") != -1),
isSecure = window.location.href.toLowerCase().indexOf("https") === 0;
// remove css image flicker
if(isIE && !isIE7){
try{
document.execCommand("BackgroundImageCache", false, true);
}catch(e){}
}
Ext.apply(Ext, {
/**
* True if the browser is in strict mode
* @type Boolean
*/
isStrict : isStrict,
/**
* True if the page is running over SSL
* @type Boolean
*/
isSecure : isSecure,
/**
* True when the document is fully initialized and ready for action
* @type Boolean
*/
isReady : false,
/**
* URL to a blank file used by Ext when in secure mode for iframe src and onReady src to prevent
* the IE insecure content warning (defaults to javascript:false).
* @type String
*/
SSL_SECURE_URL : "javascript:false",
/**
* URL to a 1x1 transparent gif image used by Ext to create inline icons with CSS background images. (Defaults to
* "http://extjs.com/s.gif" and you should change this to a URL on your server).
* @type String
*/
BLANK_IMAGE_URL : "http:/"+"/extjs.com/s.gif",
emptyFn : function(){},
/**
* Copies all the properties of config to obj if they don't already exist.
* @param {Object} obj The receiver of the properties
* @param {Object} config The source of the properties
* @return {Object} returns obj
*/
applyIf : function(o, c){
if(o && c){
for(var p in c){
if(typeof o[p] == "undefined"){ o[p] = c[p]; }
}
}
return o;
},
/**
* Applies event listeners to elements by selectors when the document is ready.
* The event name is specified with an @ suffix.
<pre><code>
Ext.addBehaviors({
// add a listener for click on all anchors in element with id foo
'#foo a@click' : function(e, t){
// do something
},
// add the same listener to multiple selectors (separated by comma BEFORE the @)
'#foo a, #bar span.some-class@mouseover' : function(){
// do something
}
});
</code></pre>
* @param {Object} obj The list of behaviors to apply
*/
addBehaviors : function(o){
if(!Ext.isReady){
Ext.onReady(function(){
Ext.addBehaviors(o);
});
return;
}
var cache = {}; // simple cache for applying multiple behaviors to same selector does query multiple times
for(var b in o){
var parts = b.split('@');
if(parts[1]){ // for Object prototype breakers
var s = parts[0];
if(!cache[s]){
cache[s] = Ext.select(s);
}
cache[s].on(parts[1], o[b]);
}
}
cache = null;
},
/**
* Generates unique ids. If the element already has an id, it is unchanged
* @param {String/HTMLElement/Element} el （可选） The element to generate an id for
* @param {String} prefix （可选） Id prefix (defaults "ext-gen")
*/
id : function(el, prefix){
prefix = prefix || "ext-gen";
el = Ext.getDom(el);
var id = prefix + (++idSeed);
return el ? (el.id ? el.id : (el.id = id)) : id;
},
/**
* Extends one class with another class and optionally overrides members with the passed literal. This class
* also adds the function "override()" to the class that can be used to override
* members on an instance.
* @param {Object} subclass The class inheriting the functionality
* @param {Object} superclass The class being extended
* @param {Object} overrides （可选） A literal with members
* @method extend
*/
extend : function(){
// inline overrides
var io = function(o){
for(var m in o){
this[m] = o[m];
}
};
return function(sb, sp, overrides){
if(typeof sp == 'object'){
overrides = sp;
sp = sb;
sb = function(){sp.apply(this, arguments);};
}
var F = function(){}, sbp, spp = sp.prototype;
F.prototype = spp;
sbp = sb.prototype = new F();
sbp.constructor=sb;
sb.superclass=spp;
if(spp.constructor == Object.prototype.constructor){
spp.constructor=sp;
}
sb.override = function(o){
Ext.override(sb, o);
};
sbp.override = io;
sbp.__extcls = sb;
Ext.override(sb, overrides);
return sb;
};
}(),
override : function(origclass, overrides){
if(overrides){
var p = origclass.prototype;
for(var method in overrides){
p[method] = overrides[method];
}
}
},
/**
* Creates namespaces but does not assume YAHOO is the root.
* @param {String} namespace1
* @param {String} namespace2
* @param {String} etc
* @method namespace
*/
namespace : function(){
var a=arguments, o=null, i, j, d, rt;
for (i=0; i<a.length; ++i) {
d=a[i].split(".");
rt = d[0];
eval('if (typeof ' + rt + ' == "undefined"){' + rt + ' = {};} o = ' + rt + ';');
for (j=1; j<d.length; ++j) {
o[d[j]]=o[d[j]] || {};
o=o[d[j]];
}
}
},
/**
* Takes an object and converts it to an encoded URL. e.g. Ext.urlEncode({foo: 1, bar: 2}); would return "foo=1&bar=2". Optionally, property values can be arrays, instead of keys and the resulting string that's returned will contain a name/value pair for each array value.
* @param {Object} o
* @return {String}
*/
urlEnCode : function(o){
if(!o){
return "";
}
var buf = [];
for(var key in o){
var ov = o[key];
var type = typeof ov;
if(type == 'undefined'){
buf.push(encodeURIComponent(key), "=&");
}else if(type != "function" && type != "object"){
buf.push(encodeURIComponent(key), "=", encodeURIComponent(ov), "&");
}else if(ov instanceof Array){
for(var i = 0, len = ov.length; i < len; i++) {
buf.push(encodeURIComponent(key), "=", encodeURIComponent(ov[i] === undefined ? '' : ov[i]), "&");
}
}
}
buf.pop();
return buf.join("");
},
/**
* Takes an encoded URL and and converts it to an object. e.g. Ext.urlDecode("foo=1&bar=2"); would return {foo: 1, bar: 2} or Ext.urlDecode("foo=1&bar=2&bar=3&bar=4", true); would return {foo: 1, bar: [2, 3, 4]}.
* @param {String} string
* @param {Boolean} overwrite （可选） Items of the same name will overwrite previous values instead of creating an an array (Defaults to false).
* @return {Object} A literal with members
*/
urlDeCode : function(string, overwrite){
if(!string || !string.length){
return {};
}
var obj = {};
var pairs = string.split('&');
var pair, name, value;
for(var i = 0, len = pairs.length; i < len; i++){
pair = pairs[i].split('=');
name = decodeURIComponent(pair[0]);
value = decodeURIComponent(pair[1]);
if(overwrite !== true){
if(typeof obj[name] == "undefined"){
obj[name] = value;
}else if(typeof obj[name] == "string"){
obj[name] = [obj[name]];
obj[name].push(value);
}else{
obj[name].push(value);
}
}else{
obj[name] = value;
}
}
return obj;
},
/**
* Iterates an array calling the passed function with each item, stopping if your function returns false. If the
* passed array is not really an array, your function is called once with it.
* The supplied function is called with (Object item, Number index, Array allItems).
* @param {Array/NodeList/Mixed} array
* @param {Function} fn
* @param {Object} scope
*/
each : function(array, fn, scope){
if(typeof array.length == "undefined" || typeof array == "string"){
array = [array];
}
for(var i = 0, len = array.length; i < len; i++){
if(fn.call(scope || array[i], array[i], i, array) === false){ return i; };
}
},
// deprecated
combine : function(){
var as = arguments, l = as.length, r = [];
for(var i = 0; i < l; i++){
var a = as[i];
if(a instanceof Array){
r = r.concat(a);
}else if(a.length !== undefined && !a.substr){
r = r.concat(Array.prototype.slice.call(a, 0));
}else{
r.push(a);
}
}
return r;
},
/**
* Escapes the passed string for use in a regular expression
* @param {String} str
* @return {String}
*/
escapeRe : function(s) {
return s.replace(/([.*+?^${}()|[\]\/\\])/g, "\\$1");
},
// internal
callback : function(cb, scope, args, delay){
if(typeof cb == "function"){
if(delay){
cb.defer(delay, scope, args || []);
}else{
cb.apply(scope, args || []);
}
}
},
/**
* Return the dom node for the passed string (id), dom node, or Ext.Element
* @param {String/HTMLElement/Element) el
* @return HTMLElement
*/
getDom : function(el){
if(!el){
return null;
}
return el.dom ? el.dom : (typeof el == 'string' ? document.getElementById(el) : el);
},
/**
* Shorthand for {@link Ext.ComponentMgr#get}
* @param {String} id
* @return Ext.Component
*/
getCmp : function(id){
return Ext.ComponentMgr.get(id);
},
num : function(v, defaultValue){
if(typeof v != 'number'){
return defaultValue;
}
return v;
},
destroy : function(){
for(var i = 0, a = arguments, len = a.length; i < len; i++) {
var as = a[i];
if(as){
if(as.dom){
as.removeAllListeners();
as.remove();
continue;
}
if(typeof as.purgeListeners == 'function'){
as.purgeListeners();
}
if(typeof as.destroy == 'function'){
as.destroy();
}
}
}
},
/* @type Boolean */
isOpera : isOpera,
/* @type Boolean */
isSafari : isSafari,
/* @type Boolean */
isIE : isIE,
/* @type Boolean */
isIE7 : isIE7,
/* @type Boolean */
isGecko : isGecko,
/* @type Boolean */
isBorderBox : isBorderBox,
/* @type Boolean */
isWindows : isWindows,
/* @type Boolean */
isMac : isMac,
/**
By default, Ext intelligently decides whether floating elements should be shimmed. If you are using flash,
you may want to set this to true.
@type Boolean
*/
useShims : ((isIE && !isIE7) || (isGecko && isMac))
});
})();
Ext.namespace("Ext", "Ext.util", "Ext.grid", "Ext.dd", "Ext.tree", "Ext.data",
"Ext.form", "Ext.menu", "Ext.state", "Ext.lib", "Ext.layout");
/**
* @class Function
* These functions are available on every Function object (any javascript function).
*/
Ext.apply(Function.prototype, {
/**
* Creates a callback that passes arguments[0], arguments[1], arguments[2], ...
* Call directly on any function. Example: <code>myFunction.createCallback(myarg, myarg2)</code>
* Will create a function that is bound to those 2 args.
* @return {Function} The new function
*/
createCallback : function(/*args...*/){
// make args available, in function below
var args = arguments;
var method = this;
return function() {
return method.apply(window, args);
};
},
/**
* Creates a delegate (callback) that sets the scope to obj.
* Call directly on any function. Example: <code>this.myFunction.createDelegate(this)</code>
* Will create a function that is automatically scoped to this.
* @param {Object} obj （可选） The object for which the scope is set
* @param {Array} args （可选） Overrides arguments for the call. (Defaults to the arguments passed by the caller)
* @param {Boolean/Number} appendArgs （可选） if True args are appended to call args instead of overriding,
* if a number the args are inserted at the specified position
* @return {Function} The new function
*/
createDelegate : function(obj, args, appendArgs){
var method = this;
return function() {
var callArgs = args || arguments;
if(appendArgs === true){
callArgs = Array.prototype.slice.call(arguments, 0);
callArgs = callArgs.concat(args);
}else if(typeof appendArgs == "number"){
callArgs = Array.prototype.slice.call(arguments, 0); // copy arguments first
var applyArgs = [appendArgs, 0].concat(args); // create method call params
Array.prototype.splice.apply(callArgs, applyArgs); // splice them in
}
return method.apply(obj || window, callArgs);
};
},
/**
* Calls this function after the number of millseconds specified.
* @param {Number} millis The number of milliseconds for the setTimeout call (if 0 the function is executed immediately)
* @param {Object} obj （可选） The object for which the scope is set
* @param {Array} args （可选） Overrides arguments for the call. (Defaults to the arguments passed by the caller)
* @param {Boolean/Number} appendArgs （可选） if True args are appended to call args instead of overriding,
* if a number the args are inserted at the specified position
* @return {Number} The timeout id that can be used with clearTimeout
*/
defer : function(millis, obj, args, appendArgs){
var fn = this.createDelegate(obj, args, appendArgs);
if(millis){
return setTimeout(fn, millis);
}
fn();
return 0;
},
/**
* Create a combined function call sequence of the original function + the passed function.
* The resulting function returns the results of the original function.
* The passed fcn is called with the parameters of the original function
* @param {Function} fcn The function to sequence
* @param {Object} scope （可选） The scope of the passed fcn (Defaults to scope of original function or window)
* @return {Function} The new function
*/
createSequence : function(fcn, scope){
if(typeof fcn != "function"){
return this;
}
var method = this;
return function() {
var retval = method.apply(this || window, arguments);
fcn.apply(scope || this || window, arguments);
return retval;
};
},
/**
* Creates an interceptor function. The passed fcn is called before the original one. If it returns false, the original one is not called.
* The resulting function returns the results of the original function.
* The passed fcn is called with the parameters of the original function.
* @addon
* @param {Function} fcn The function to call before the original
* @param {Object} scope （可选） The scope of the passed fcn (Defaults to scope of original function or window)
* @return {Function} The new function
*/
createInterceptor : function(fcn, scope){
if(typeof fcn != "function"){
return this;
}
var method = this;
return function() {
fcn.target = this;
fcn.method = method;
if(fcn.apply(scope || this || window, arguments) === false){
return;
}
return method.apply(this || window, arguments);
};
}
});
Ext.applyIf(String, {
/*
* Escapes the passed string for ' and \
* @param {String} str
* @return {String}
*/
escape : function(string) {
return string.replace(/('|\\)/g, "\\$1");
},
leftPad : function (val, size, ch) {
var result = new String(val);
if (ch == null) {
ch = " ";
}
while (result.length < size) {
result = ch + result;
}
return result;
},
format : function(format){
var args = Array.prototype.slice.call(arguments, 1);
return format.replace(/\{(\d+)\}/g, function(m, i){
return args[i];
});
}
});
String.prototype.toggle = function(value, other){
return this == value ? other : value;
};
Ext.applyIf(Number.prototype, {
constrain : function(min, max){
return Math.min(Math.max(this, min), max);
}
});
Ext.applyIf(Array.prototype, {
indexOf : function(o){
for (var i = 0, len = this.length; i < len; i++){
if(this[i] == o) return i;
}
return -1;
},
remove : function(o){
var index = this.indexOf(o);
if(index != -1){
this.splice(index, 1);
}
}
});
/**
Returns the number of milliseconds between this date and date
@param {Date} date （可选） Defaults to now
@return {Number} The diff in milliseconds
@member Date getElapsed
*/
Date.prototype.getElapsed = function(date) {
return Math.abs((date || new Date()).getTime()-this.getTime());
};
Ext - Copyright © 2006-2007 Ext JS, LLC
All rights reserved.