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</span> * @author Jacky Nguyen <jacky@sencha.com>
* @docauthor Jacky Nguyen <jacky@sencha.com>
* @class Ext.Class
- *
- * Handles class creation throughout the whole framework. Note that most of the time {@link Ext#define Ext.define} should
- * be used instead, since it's a higher level wrapper that aliases to {@link Ext.ClassManager#create}
- * to enable namespacing and dynamic dependency resolution.
- *
- * # Basic syntax: #
- *
- * Ext.define(className, properties);
- *
- * in which `properties` is an object represent a collection of properties that apply to the class. See
- * {@link Ext.ClassManager#create} for more detailed instructions.
- *
- * Ext.define('Person', {
- * name: 'Unknown',
- *
- * constructor: function(name) {
- * if (name) {
- * this.name = name;
- * }
- *
- * return this;
- * },
- *
- * eat: function(foodType) {
- * alert("I'm eating: " + foodType);
- *
- * return this;
- * }
- * });
- *
- * var aaron = new Person("Aaron");
- * aaron.eat("Sandwich"); // alert("I'm eating: Sandwich");
- *
- * Ext.Class has a powerful set of extensible {@link Ext.Class#registerPreprocessor pre-processors} which takes care of
- * everything related to class creation, including but not limited to inheritance, mixins, configuration, statics, etc.
- *
- * # Inheritance: #
- *
- * Ext.define('Developer', {
- * extend: 'Person',
- *
- * constructor: function(name, isGeek) {
- * this.isGeek = isGeek;
- *
- * // Apply a method from the parent class' prototype
- * this.callParent([name]);
- *
- * return this;
- *
- * },
- *
- * code: function(language) {
- * alert("I'm coding in: " + language);
- *
- * this.eat("Bugs");
- *
- * return this;
- * }
- * });
- *
- * var jacky = new Developer("Jacky", true);
- * jacky.code("JavaScript"); // alert("I'm coding in: JavaScript");
- * // alert("I'm eating: Bugs");
- *
- * See {@link Ext.Base#callParent} for more details on calling superclass' methods
- *
- * # Mixins: #
- *
- * Ext.define('CanPlayGuitar', {
- * playGuitar: function() {
- * alert("F#...G...D...A");
- * }
- * });
- *
- * Ext.define('CanComposeSongs', {
- * composeSongs: function() { ... }
- * });
- *
- * Ext.define('CanSing', {
- * sing: function() {
- * alert("I'm on the highway to hell...")
- * }
- * });
- *
- * Ext.define('Musician', {
- * extend: 'Person',
- *
- * mixins: {
- * canPlayGuitar: 'CanPlayGuitar',
- * canComposeSongs: 'CanComposeSongs',
- * canSing: 'CanSing'
- * }
- * })
- *
- * Ext.define('CoolPerson', {
- * extend: 'Person',
- *
- * mixins: {
- * canPlayGuitar: 'CanPlayGuitar',
- * canSing: 'CanSing'
- * },
- *
- * sing: function() {
- * alert("Ahem....");
- *
- * this.mixins.canSing.sing.call(this);
- *
- * alert("[Playing guitar at the same time...]");
- *
- * this.playGuitar();
- * }
- * });
- *
- * var me = new CoolPerson("Jacky");
- *
- * me.sing(); // alert("Ahem...");
- * // alert("I'm on the highway to hell...");
- * // alert("[Playing guitar at the same time...]");
- * // alert("F#...G...D...A");
- *
- * # Config: #
- *
- * Ext.define('SmartPhone', {
- * config: {
- * hasTouchScreen: false,
- * operatingSystem: 'Other',
- * price: 500
- * },
- *
- * isExpensive: false,
- *
- * constructor: function(config) {
- * this.initConfig(config);
- *
- * return this;
- * },
- *
- * applyPrice: function(price) {
- * this.isExpensive = (price > 500);
- *
- * return price;
- * },
- *
- * applyOperatingSystem: function(operatingSystem) {
- * if (!(/^(iOS|Android|BlackBerry)$/i).test(operatingSystem)) {
- * return 'Other';
- * }
- *
- * return operatingSystem;
- * }
- * });
- *
- * var iPhone = new SmartPhone({
- * hasTouchScreen: true,
- * operatingSystem: 'iOS'
- * });
- *
- * iPhone.getPrice(); // 500;
- * iPhone.getOperatingSystem(); // 'iOS'
- * iPhone.getHasTouchScreen(); // true;
- * iPhone.hasTouchScreen(); // true
- *
- * iPhone.isExpensive; // false;
- * iPhone.setPrice(600);
- * iPhone.getPrice(); // 600
- * iPhone.isExpensive; // true;
- *
- * iPhone.setOperatingSystem('AlienOS');
- * iPhone.getOperatingSystem(); // 'Other'
- *
- * # Statics: #
- *
- * Ext.define('Computer', {
- * statics: {
- * factory: function(brand) {
- * // 'this' in static methods refer to the class itself
- * return new this(brand);
- * }
- * },
- *
- * constructor: function() { ... }
- * });
- *
- * var dellComputer = Computer.factory('Dell');
- *
- * Also see {@link Ext.Base#statics} and {@link Ext.Base#self} for more details on accessing
- * static properties within class methods
*
+ * Handles class creation throughout the framework. This is a low level factory that is used by Ext.ClassManager and generally
+ * should not be used directly. If you choose to use Ext.Class you will lose out on the namespace, aliasing and depency loading
+ * features made available by Ext.ClassManager. The only time you would use Ext.Class directly is to create an anonymous class.
+ *
+ * If you wish to create a class you should use {@link Ext#define Ext.define} which aliases
+ * {@link Ext.ClassManager#create Ext.ClassManager.create} to enable namespacing and dynamic dependency resolution.
+ *
+ * Ext.Class is the factory and **not** the superclass of everything. For the base class that **all** Ext classes inherit
+ * from, see {@link Ext.Base}.
*/
(function() {
</span> * @method constructor
* Creates new class.
* @param {Object} classData An object represent the properties of this class
- * @param {Function} createdFn Optional, the callback function to be executed when this class is fully created.
+ * @param {Function} createdFn (Optional) The callback function to be executed when this class is fully created.
* Note that the creation process can be asynchronous depending on the pre-processors used.
* @return {Ext.Base} The newly created class
*/
Ext.Class = Class = function(newClass, classData, onClassCreated) {
- if (typeof newClass !== 'function') {
+ if (typeof newClass != 'function') {
onClassCreated = classData;
classData = newClass;
newClass = function() {
registeredPreprocessors = Class.getPreprocessors(),
index = 0,
preprocessors = [],
- preprocessor, preprocessors, staticPropertyName, process, i, j, ln;
+ preprocessor, staticPropertyName, process, i, j, ln;
for (i = 0, ln = baseStaticProperties.length; i < ln; i++) {
staticPropertyName = baseStaticProperties[i];
for (j = 0, ln = preprocessorStack.length; j < ln; j++) {
preprocessor = preprocessorStack[j];
- if (typeof preprocessor === 'string') {
+ if (typeof preprocessor == 'string') {
preprocessor = registeredPreprocessors[preprocessor];
if (!preprocessor.always) {
}
}
- classData.onClassCreated = onClassCreated;
+ classData.onClassCreated = onClassCreated || Ext.emptyFn;
classData.onBeforeClassCreated = function(cls, data) {
onClassCreated = data.onClassCreated;
cls.implement(data);
- if (onClassCreated) {
- onClassCreated.call(cls, cls);
- }
+ onClassCreated.call(cls, cls);
};
process = function(cls, data) {
<span id='Ext-Class-property-preprocessors'> /** @private */
</span> preprocessors: {},
-<span id='Ext-Class-method-registerPreprocessor'> /**
+<span id='Ext-Class-static-method-registerPreprocessor'> /**
</span> * Register a new pre-processor to be used during the class creation process
*
- * @member Ext.Class registerPreprocessor
+ * @member Ext.Class
* @param {String} name The pre-processor's name
* @param {Function} fn The callback function to be executed. Typical format:
-
- function(cls, data, fn) {
- // Your code here
-
- // Execute this when the processing is finished.
- // Asynchronous processing is perfectly ok
- if (fn) {
- fn.call(this, cls, data);
- }
- });
-
- * Passed arguments for this function are:
*
- * - `{Function} cls`: The created class
- * - `{Object} data`: The set of properties passed in {@link Ext.Class} constructor
- * - `{Function} fn`: The callback function that <b>must</b> to be executed when this pre-processor finishes,
+ * function(cls, data, fn) {
+ * // Your code here
+ *
+ * // Execute this when the processing is finished.
+ * // Asynchronous processing is perfectly ok
+ * if (fn) {
+ * fn.call(this, cls, data);
+ * }
+ * });
+ *
+ * @param {Function} fn.cls The created class
+ * @param {Object} fn.data The set of properties passed in {@link Ext.Class} constructor
+ * @param {Function} fn.fn The callback function that **must** to be executed when this pre-processor finishes,
* regardless of whether the processing is synchronous or aynchronous
*
* @return {Ext.Class} this
- * @markdown
+ * @static
*/
registerPreprocessor: function(name, fn, always) {
this.preprocessors[name] = {
return this;
},
-<span id='Ext-Class-method-getPreprocessor'> /**
+<span id='Ext-Class-static-method-getPreprocessor'> /**
</span> * Retrieve a pre-processor callback function by its name, which has been registered before
*
* @param {String} name
* @return {Function} preprocessor
+ * @static
*/
getPreprocessor: function(name) {
return this.preprocessors[name];
return this.preprocessors;
},
-<span id='Ext-Class-method-getDefaultPreprocessors'> /**
+<span id='Ext-Class-static-method-getDefaultPreprocessors'> /**
</span> * Retrieve the array stack of default pre-processors
*
- * @return {Function} defaultPreprocessors
+ * @return {Function[]} defaultPreprocessors
+ * @static
*/
getDefaultPreprocessors: function() {
return this.defaultPreprocessors || [];
},
-<span id='Ext-Class-method-setDefaultPreprocessors'> /**
+<span id='Ext-Class-static-method-setDefaultPreprocessors'> /**
</span> * Set the default array stack of default pre-processors
*
- * @param {Array} preprocessors
+ * @param {Function/Function[]} preprocessors
* @return {Ext.Class} this
+ * @static
*/
setDefaultPreprocessors: function(preprocessors) {
this.defaultPreprocessors = Ext.Array.from(preprocessors);
return this;
},
-<span id='Ext-Class-method-setDefaultPreprocessorPosition'> /**
-</span> * Insert this pre-processor at a specific position in the stack, optionally relative to
+<span id='Ext-Class-static-method-setDefaultPreprocessorPosition'> /**
+</span> * Inserts this pre-processor at a specific position in the stack, optionally relative to
* any existing pre-processor. For example:
-
- Ext.Class.registerPreprocessor('debug', function(cls, data, fn) {
- // Your code here
-
- if (fn) {
- fn.call(this, cls, data);
- }
- }).insertDefaultPreprocessor('debug', 'last');
-
+ *
+ * Ext.Class.registerPreprocessor('debug', function(cls, data, fn) {
+ * // Your code here
+ *
+ * if (fn) {
+ * fn.call(this, cls, data);
+ * }
+ * }).setDefaultPreprocessorPosition('debug', 'last');
+ *
* @param {String} name The pre-processor name. Note that it needs to be registered with
- * {@link Ext#registerPreprocessor registerPreprocessor} before this
+ * {@link #registerPreprocessor registerPreprocessor} before this
* @param {String} offset The insertion position. Four possible values are:
* 'first', 'last', or: 'before', 'after' (relative to the name provided in the third argument)
* @param {String} relativeName
* @return {Ext.Class} this
- * @markdown
+ * @static
*/
setDefaultPreprocessorPosition: function(name, offset, relativeName) {
var defaultPreprocessors = this.defaultPreprocessors,
index;
- if (typeof offset === 'string') {
+ if (typeof offset == 'string') {
if (offset === 'first') {
defaultPreprocessors.unshift(name);
delete data.extend;
+ //<feature classSystem.inheritableStatics>
// Statics inheritance
parentStatics = parentPrototype.$inheritableStatics;
}
}
}
+ //</feature>
+ //<feature classSystem.config>
// Merge the parent class' config object without referencing it
if (parentPrototype.config) {
clsPrototype.config = Ext.Object.merge({}, parentPrototype.config);
else {
clsPrototype.config = {};
}
+ //</feature>
+ //<feature classSystem.onClassExtended>
if (clsPrototype.$onExtended) {
clsPrototype.$onExtended.call(cls, cls, data);
}
clsPrototype.$onExtended = data.onClassExtended;
delete data.onClassExtended;
}
+ //</feature>
}, true);
+ //<feature classSystem.statics>
<span id='Ext-Class-cfg-statics'> /**
</span> * @cfg {Object} statics
* List of static methods for this class. For example:
* var dellComputer = Computer.factory('Dell');
*/
Class.registerPreprocessor('statics', function(cls, data) {
- var statics = data.statics,
- name;
-
- for (name in statics) {
- if (statics.hasOwnProperty(name)) {
- cls[name] = statics[name];
- }
- }
+ cls.addStatics(data.statics);
delete data.statics;
});
+ //</feature>
+ //<feature classSystem.inheritableStatics>
<span id='Ext-Class-cfg-inheritableStatics'> /**
</span> * @cfg {Object} inheritableStatics
* List of inheritable static methods for this class.
* Otherwise just like {@link #statics} but subclasses inherit these methods.
*/
Class.registerPreprocessor('inheritableStatics', function(cls, data) {
- var statics = data.inheritableStatics,
- inheritableStatics,
- prototype = cls.prototype,
- name;
-
- inheritableStatics = prototype.$inheritableStatics;
-
- if (!inheritableStatics) {
- inheritableStatics = prototype.$inheritableStatics = [];
- }
-
- for (name in statics) {
- if (statics.hasOwnProperty(name)) {
- cls[name] = statics[name];
- inheritableStatics.push(name);
- }
- }
+ cls.addInheritableStatics(data.inheritableStatics);
delete data.inheritableStatics;
});
+ //</feature>
-<span id='Ext-Class-cfg-mixins'> /**
-</span> * @cfg {Object} mixins
- * List of classes to mix into this class. For example:
- *
- * Ext.define('CanSing', {
- * sing: function() {
- * alert("I'm on the highway to hell...")
- * }
- * });
- *
- * Ext.define('Musician', {
- * extend: 'Person',
- *
- * mixins: {
- * canSing: 'CanSing'
- * }
- * })
- */
- Class.registerPreprocessor('mixins', function(cls, data) {
- cls.mixin(data.mixins);
-
- delete data.mixins;
- });
-
+ //<feature classSystem.config>
<span id='Ext-Class-cfg-config'> /**
</span> * @cfg {Object} config
* List of configuration options with their default values, for which automatically
data[setter] = function(val) {
var ret = this[apply].call(this, val, this[pName]);
- if (ret !== undefined) {
+ if (typeof ret != 'undefined') {
this[pName] = ret;
}
Ext.Object.merge(prototype.config, data.config);
delete data.config;
});
+ //</feature>
+
+ //<feature classSystem.mixins>
+<span id='Ext-Class-cfg-mixins'> /**
+</span> * @cfg {Object} mixins
+ * List of classes to mix into this class. For example:
+ *
+ * Ext.define('CanSing', {
+ * sing: function() {
+ * alert("I'm on the highway to hell...")
+ * }
+ * });
+ *
+ * Ext.define('Musician', {
+ * extend: 'Person',
+ *
+ * mixins: {
+ * canSing: 'CanSing'
+ * }
+ * })
+ */
+ Class.registerPreprocessor('mixins', function(cls, data) {
+ var mixins = data.mixins,
+ name, mixin, i, ln;
+
+ delete data.mixins;
+
+ Ext.Function.interceptBefore(data, 'onClassCreated', function(cls) {
+ if (mixins instanceof Array) {
+ for (i = 0,ln = mixins.length; i < ln; i++) {
+ mixin = mixins[i];
+ name = mixin.prototype.mixinId || mixin.$className;
- Class.setDefaultPreprocessors(['extend', 'statics', 'inheritableStatics', 'mixins', 'config']);
+ cls.mixin(name, mixin);
+ }
+ }
+ else {
+ for (name in mixins) {
+ if (mixins.hasOwnProperty(name)) {
+ cls.mixin(name, mixins[name]);
+ }
+ }
+ }
+ });
+ });
+ //</feature>
+
+ Class.setDefaultPreprocessors([
+ 'extend'
+ //<feature classSystem.statics>
+ ,'statics'
+ //</feature>
+ //<feature classSystem.inheritableStatics>
+ ,'inheritableStatics'
+ //</feature>
+ //<feature classSystem.config>
+ ,'config'
+ //</feature>
+ //<feature classSystem.mixins>
+ ,'mixins'
+ //</feature>
+ ]);
+
+ //<feature classSystem.backwardsCompatible>
// Backwards compatible
Ext.extend = function(subclass, superclass, members) {
if (arguments.length === 2 && Ext.isObject(superclass)) {
}
members.extend = superclass;
- members.preprocessors = ['extend', 'mixins', 'config', 'statics'];
+ members.preprocessors = [
+ 'extend'
+ //<feature classSystem.statics>
+ ,'statics'
+ //</feature>
+ //<feature classSystem.inheritableStatics>
+ ,'inheritableStatics'
+ //</feature>
+ //<feature classSystem.mixins>
+ ,'mixins'
+ //</feature>
+ //<feature classSystem.config>
+ ,'config'
+ //</feature>
+ ];
if (subclass) {
cls = new Class(subclass, members);
return cls;
};
+ //</feature>
})();
</pre>
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