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<pre class="prettyprint lang-js"><span id='Ext-Object'>/**
</span> * @author Jacky Nguyen <jacky@sencha.com>
* @docauthor Jacky Nguyen <jacky@sencha.com>
* @class Ext.Object
*
* A collection of useful static methods to deal with objects.
*
* @singleton
*/
(function() {
// The "constructor" for chain:
var TemplateClass = function(){},
ExtObject = Ext.Object = {
<span id='Ext-Object-method-chain'> /**
</span> * Returns a new object with the given object as the prototype chain.
* @param {Object} object The prototype chain for the new object.
*/
chain: function (object) {
TemplateClass.prototype = object;
var result = new TemplateClass();
TemplateClass.prototype = null;
return result;
},
<span id='Ext-Object-method-toQueryObjects'> /**
</span> * Converts a `name` - `value` pair to an array of objects with support for nested structures. Useful to construct
* query strings. For example:
*
* var objects = Ext.Object.toQueryObjects('hobbies', ['reading', 'cooking', 'swimming']);
*
* // objects then equals:
* [
* { name: 'hobbies', value: 'reading' },
* { name: 'hobbies', value: 'cooking' },
* { name: 'hobbies', value: 'swimming' },
* ];
*
* var objects = Ext.Object.toQueryObjects('dateOfBirth', {
* day: 3,
* month: 8,
* year: 1987,
* extra: {
* hour: 4
* minute: 30
* }
* }, true); // Recursive
*
* // objects then equals:
* [
* { name: 'dateOfBirth[day]', value: 3 },
* { name: 'dateOfBirth[month]', value: 8 },
* { name: 'dateOfBirth[year]', value: 1987 },
* { name: 'dateOfBirth[extra][hour]', value: 4 },
* { name: 'dateOfBirth[extra][minute]', value: 30 },
* ];
*
* @param {String} name
* @param {Object/Array} value
* @param {Boolean} [recursive=false] True to traverse object recursively
* @return {Array}
*/
toQueryObjects: function(name, value, recursive) {
var self = ExtObject.toQueryObjects,
objects = [],
i, ln;
if (Ext.isArray(value)) {
for (i = 0, ln = value.length; i < ln; i++) {
if (recursive) {
objects = objects.concat(self(name + '[' + i + ']', value[i], true));
}
else {
objects.push({
name: name,
value: value[i]
});
}
}
}
else if (Ext.isObject(value)) {
for (i in value) {
if (value.hasOwnProperty(i)) {
if (recursive) {
objects = objects.concat(self(name + '[' + i + ']', value[i], true));
}
else {
objects.push({
name: name,
value: value[i]
});
}
}
}
}
else {
objects.push({
name: name,
value: value
});
}
return objects;
},
<span id='Ext-Object-method-toQueryString'> /**
</span> * Takes an object and converts it to an encoded query string.
*
* Non-recursive:
*
* Ext.Object.toQueryString({foo: 1, bar: 2}); // returns "foo=1&bar=2"
* Ext.Object.toQueryString({foo: null, bar: 2}); // returns "foo=&bar=2"
* Ext.Object.toQueryString({'some price': '$300'}); // returns "some%20price=%24300"
* Ext.Object.toQueryString({date: new Date(2011, 0, 1)}); // returns "date=%222011-01-01T00%3A00%3A00%22"
* Ext.Object.toQueryString({colors: ['red', 'green', 'blue']}); // returns "colors=red&colors=green&colors=blue"
*
* Recursive:
*
* Ext.Object.toQueryString({
* username: 'Jacky',
* dateOfBirth: {
* day: 1,
* month: 2,
* year: 1911
* },
* hobbies: ['coding', 'eating', 'sleeping', ['nested', 'stuff']]
* }, true); // returns the following string (broken down and url-decoded for ease of reading purpose):
* // username=Jacky
* // &dateOfBirth[day]=1&dateOfBirth[month]=2&dateOfBirth[year]=1911
* // &hobbies[0]=coding&hobbies[1]=eating&hobbies[2]=sleeping&hobbies[3][0]=nested&hobbies[3][1]=stuff
*
* @param {Object} object The object to encode
* @param {Boolean} [recursive=false] Whether or not to interpret the object in recursive format.
* (PHP / Ruby on Rails servers and similar).
* @return {String} queryString
*/
toQueryString: function(object, recursive) {
var paramObjects = [],
params = [],
i, j, ln, paramObject, value;
for (i in object) {
if (object.hasOwnProperty(i)) {
paramObjects = paramObjects.concat(ExtObject.toQueryObjects(i, object[i], recursive));
}
}
for (j = 0, ln = paramObjects.length; j < ln; j++) {
paramObject = paramObjects[j];
value = paramObject.value;
if (Ext.isEmpty(value)) {
value = '';
}
else if (Ext.isDate(value)) {
value = Ext.Date.toString(value);
}
params.push(encodeURIComponent(paramObject.name) + '=' + encodeURIComponent(String(value)));
}
return params.join('&');
},
<span id='Ext-Object-method-fromQueryString'> /**
</span> * Converts a query string back into an object.
*
* Non-recursive:
*
* Ext.Object.fromQueryString("foo=1&bar=2"); // returns {foo: 1, bar: 2}
* Ext.Object.fromQueryString("foo=&bar=2"); // returns {foo: null, bar: 2}
* Ext.Object.fromQueryString("some%20price=%24300"); // returns {'some price': '$300'}
* Ext.Object.fromQueryString("colors=red&colors=green&colors=blue"); // returns {colors: ['red', 'green', 'blue']}
*
* Recursive:
*
* Ext.Object.fromQueryString(
* "username=Jacky&"+
* "dateOfBirth[day]=1&dateOfBirth[month]=2&dateOfBirth[year]=1911&"+
* "hobbies[0]=coding&hobbies[1]=eating&hobbies[2]=sleeping&"+
* "hobbies[3][0]=nested&hobbies[3][1]=stuff", true);
*
* // returns
* {
* username: 'Jacky',
* dateOfBirth: {
* day: '1',
* month: '2',
* year: '1911'
* },
* hobbies: ['coding', 'eating', 'sleeping', ['nested', 'stuff']]
* }
*
* @param {String} queryString The query string to decode
* @param {Boolean} [recursive=false] Whether or not to recursively decode the string. This format is supported by
* PHP / Ruby on Rails servers and similar.
* @return {Object}
*/
fromQueryString: function(queryString, recursive) {
var parts = queryString.replace(/^\?/, '').split('&'),
object = {},
temp, components, name, value, i, ln,
part, j, subLn, matchedKeys, matchedName,
keys, key, nextKey;
for (i = 0, ln = parts.length; i < ln; i++) {
part = parts[i];
if (part.length > 0) {
components = part.split('=');
name = decodeURIComponent(components[0]);
value = (components[1] !== undefined) ? decodeURIComponent(components[1]) : '';
if (!recursive) {
if (object.hasOwnProperty(name)) {
if (!Ext.isArray(object[name])) {
object[name] = [object[name]];
}
object[name].push(value);
}
else {
object[name] = value;
}
}
else {
matchedKeys = name.match(/(\[):?([^\]]*)\]/g);
matchedName = name.match(/^([^\[]+)/);
//<debug error>
if (!matchedName) {
throw new Error('[Ext.Object.fromQueryString] Malformed query string given, failed parsing name from "' + part + '"');
}
//</debug>
name = matchedName[0];
keys = [];
if (matchedKeys === null) {
object[name] = value;
continue;
}
for (j = 0, subLn = matchedKeys.length; j < subLn; j++) {
key = matchedKeys[j];
key = (key.length === 2) ? '' : key.substring(1, key.length - 1);
keys.push(key);
}
keys.unshift(name);
temp = object;
for (j = 0, subLn = keys.length; j < subLn; j++) {
key = keys[j];
if (j === subLn - 1) {
if (Ext.isArray(temp) && key === '') {
temp.push(value);
}
else {
temp[key] = value;
}
}
else {
if (temp[key] === undefined || typeof temp[key] === 'string') {
nextKey = keys[j+1];
temp[key] = (Ext.isNumeric(nextKey) || nextKey === '') ? [] : {};
}
temp = temp[key];
}
}
}
}
}
return object;
},
<span id='Ext-Object-method-each'> /**
</span> * Iterates through an object and invokes the given callback function for each iteration.
* The iteration can be stopped by returning `false` in the callback function. For example:
*
* var person = {
* name: 'Jacky'
* hairColor: 'black'
* loves: ['food', 'sleeping', 'wife']
* };
*
* Ext.Object.each(person, function(key, value, myself) {
* console.log(key + ":" + value);
*
* if (key === 'hairColor') {
* return false; // stop the iteration
* }
* });
*
* @param {Object} object The object to iterate
* @param {Function} fn The callback function.
* @param {String} fn.key
* @param {Object} fn.value
* @param {Object} fn.object The object itself
* @param {Object} [scope] The execution scope (`this`) of the callback function
*/
each: function(object, fn, scope) {
for (var property in object) {
if (object.hasOwnProperty(property)) {
if (fn.call(scope || object, property, object[property], object) === false) {
return;
}
}
}
},
<span id='Ext-Object-method-merge'> /**
</span> * Merges any number of objects recursively without referencing them or their children.
*
* var extjs = {
* companyName: 'Ext JS',
* products: ['Ext JS', 'Ext GWT', 'Ext Designer'],
* isSuperCool: true,
* office: {
* size: 2000,
* location: 'Palo Alto',
* isFun: true
* }
* };
*
* var newStuff = {
* companyName: 'Sencha Inc.',
* products: ['Ext JS', 'Ext GWT', 'Ext Designer', 'Sencha Touch', 'Sencha Animator'],
* office: {
* size: 40000,
* location: 'Redwood City'
* }
* };
*
* var sencha = Ext.Object.merge(extjs, newStuff);
*
* // extjs and sencha then equals to
* {
* companyName: 'Sencha Inc.',
* products: ['Ext JS', 'Ext GWT', 'Ext Designer', 'Sencha Touch', 'Sencha Animator'],
* isSuperCool: true,
* office: {
* size: 40000,
* location: 'Redwood City',
* isFun: true
* }
* }
*
* @param {Object} destination The object into which all subsequent objects are merged.
* @param {Object...} object Any number of objects to merge into the destination.
* @return {Object} merged The destination object with all passed objects merged in.
*/
merge: function(destination) {
var i = 1,
ln = arguments.length,
mergeFn = ExtObject.merge,
cloneFn = Ext.clone,
object, key, value, sourceKey;
for (; i < ln; i++) {
object = arguments[i];
for (key in object) {
value = object[key];
if (value && value.constructor === Object) {
sourceKey = destination[key];
if (sourceKey && sourceKey.constructor === Object) {
mergeFn(sourceKey, value);
}
else {
destination[key] = cloneFn(value);
}
}
else {
destination[key] = value;
}
}
}
return destination;
},
<span id='Ext-Object-method-mergeIf'> /**
</span> * @private
* @param destination
*/
mergeIf: function(destination) {
var i = 1,
ln = arguments.length,
cloneFn = Ext.clone,
object, key, value;
for (; i < ln; i++) {
object = arguments[i];
for (key in object) {
if (!(key in destination)) {
value = object[key];
if (value && value.constructor === Object) {
destination[key] = cloneFn(value);
}
else {
destination[key] = value;
}
}
}
}
return destination;
},
<span id='Ext-Object-method-getKey'> /**
</span> * Returns the first matching key corresponding to the given value.
* If no matching value is found, null is returned.
*
* var person = {
* name: 'Jacky',
* loves: 'food'
* };
*
* alert(Ext.Object.getKey(person, 'food')); // alerts 'loves'
*
* @param {Object} object
* @param {Object} value The value to find
*/
getKey: function(object, value) {
for (var property in object) {
if (object.hasOwnProperty(property) && object[property] === value) {
return property;
}
}
return null;
},
<span id='Ext-Object-method-getValues'> /**
</span> * Gets all values of the given object as an array.
*
* var values = Ext.Object.getValues({
* name: 'Jacky',
* loves: 'food'
* }); // ['Jacky', 'food']
*
* @param {Object} object
* @return {Array} An array of values from the object
*/
getValues: function(object) {
var values = [],
property;
for (property in object) {
if (object.hasOwnProperty(property)) {
values.push(object[property]);
}
}
return values;
},
<span id='Ext-Object-method-getKeys'> /**
</span> * Gets all keys of the given object as an array.
*
* var values = Ext.Object.getKeys({
* name: 'Jacky',
* loves: 'food'
* }); // ['name', 'loves']
*
* @param {Object} object
* @return {String[]} An array of keys from the object
* @method
*/
getKeys: (typeof Object.keys == 'function')
? function(object){
if (!object) {
return [];
}
return Object.keys(object);
}
: function(object) {
var keys = [],
property;
for (property in object) {
if (object.hasOwnProperty(property)) {
keys.push(property);
}
}
return keys;
},
<span id='Ext-Object-method-getSize'> /**
</span> * Gets the total number of this object's own properties
*
* var size = Ext.Object.getSize({
* name: 'Jacky',
* loves: 'food'
* }); // size equals 2
*
* @param {Object} object
* @return {Number} size
*/
getSize: function(object) {
var size = 0,
property;
for (property in object) {
if (object.hasOwnProperty(property)) {
size++;
}
}
return size;
},
<span id='Ext-Object-method-classify'> /**
</span> * @private
*/
classify: function(object) {
var prototype = object,
objectProperties = [],
propertyClassesMap = {},
objectClass = function() {
var i = 0,
ln = objectProperties.length,
property;
for (; i < ln; i++) {
property = objectProperties[i];
this[property] = new propertyClassesMap[property]();
}
},
key, value;
for (key in object) {
if (object.hasOwnProperty(key)) {
value = object[key];
if (value && value.constructor === Object) {
objectProperties.push(key);
propertyClassesMap[key] = ExtObject.classify(value);
}
}
}
objectClass.prototype = prototype;
return objectClass;
}
};
<span id='Ext-method-merge'>/**
</span> * A convenient alias method for {@link Ext.Object#merge}.
*
* @member Ext
* @method merge
* @inheritdoc Ext.Object#merge
*/
Ext.merge = Ext.Object.merge;
<span id='Ext-property-mergeIf'>/**
</span> * @private
* @member Ext
*/
Ext.mergeIf = Ext.Object.mergeIf;
<span id='Ext-method-urlEncode'>/**
</span> *
* @member Ext
* @method urlEncode
* @inheritdoc Ext.Object#toQueryString
* @deprecated 4.0.0 Use {@link Ext.Object#toQueryString} instead
*/
Ext.urlEncode = function() {
var args = Ext.Array.from(arguments),
prefix = '';
// Support for the old `pre` argument
if ((typeof args[1] === 'string')) {
prefix = args[1] + '&';
args[1] = false;
}
return prefix + ExtObject.toQueryString.apply(ExtObject, args);
};
<span id='Ext-method-urlDecode'>/**
</span> * Alias for {@link Ext.Object#fromQueryString}.
*
* @member Ext
* @method urlDecode
* @inheritdoc Ext.Object#fromQueryString
* @deprecated 4.0.0 Use {@link Ext.Object#fromQueryString} instead
*/
Ext.urlDecode = function() {
return ExtObject.fromQueryString.apply(ExtObject, arguments);
};
}());
</pre>
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