Many classes have shortcut names used when creating (instantiating) a class with a
configuration object. The shortcut name is referred to as an alias (or xtype if the
class extends Ext.Component). The alias/xtype is listed next to the class name of
applicable classes for quick reference.
Framework classes or their members may be specified as private or protected. Else,
the class / member is public. Public, protected, and private are access
descriptors used to convey how and when the class or class member should be used.
Public classes and class members are available for use by any other class or application code and may be relied upon as a stable and persistent within major product versions. Public classes and members may safely be extended via a subclass.
Protected class members are stable public members intended to be used by the
owning class or its subclasses. Protected members may safely be extended via a subclass.
Private classes and class members are used internally by the framework and are not intended to be used by application developers. Private classes and members may change or be omitted from the framework at any time without notice and should not be relied upon in application logic.
static label next to the
method name. *See Static below.Below is an example class member that we can disect to show the syntax of a class member (the lookupComponent method as viewed from the Ext.button.Button class in this case).
Let's look at each part of the member row:
lookupComponent in this example)( item ) in this example)Ext.Component in this case). This may be omitted for methods that do not
return anything other than undefined or may display as multiple possible values
separated by a forward slash / signifying that what is returned may depend on the
results of the method call (i.e. a method may return a Component if a get method calls is
successful or false if unsuccessful which would be displayed as
Ext.Component/Boolean).PROTECTED in
this example - see the Flags section below)Ext.container.Container in this example). The source
class will be displayed as a blue link if the member originates from the current class
and gray if it is inherited from an ancestor or mixed-in class.view source in the example)item : Object in the example).undefined a "Returns" section
will note the type of class or object returned and a description (Ext.Component in the
example)Available since 3.4.0 - not pictured in
the example) just after the member descriptionDefaults to: false)The API documentation uses a number of flags to further commnicate the class member's function and intent. The label may be represented by a text label, an abbreviation, or an icon.
classInstance.method1().method2().etc();false is returned from
an event handler- Indicates a framework class
- A singleton framework class. *See the singleton flag for more information
- A component-type framework class (any class within the Ext JS framework that extends Ext.Component)
- Indicates that the class, member, or guide is new in the currently viewed version
- Indicates a class member of type config
- Indicates a class member of type property
- Indicates a class member of type
method
- Indicates a class member of type event
- Indicates a class member of type
theme variable
- Indicates a class member of type
theme mixin
- Indicates that the class, member, or guide is new in the currently viewed version
Just below the class name on an API doc page is a row of buttons corresponding to the types of members owned by the current class. Each button shows a count of members by type (this count is updated as filters are applied). Clicking the button will navigate you to that member section. Hovering over the member-type button will reveal a popup menu of all members of that type for quick navigation.
Getting and setter methods that correlate to a class config option will show up in the methods section as well as in the configs section of both the API doc and the member-type menus just beneath the config they work with. The getter and setter method documentation will be found in the config row for easy reference.
Your page history is kept in localstorage and displayed (using the available real estate) just below the top title bar. By default, the only search results shown are the pages matching the product / version you're currently viewing. You can expand what is displayed by clicking on the button on the right-hand side of the history bar and choosing the "All" radio option. This will show all recent pages in the history bar for all products / versions.
Within the history config menu you will also see a listing of your recent page visits. The results are filtered by the "Current Product / Version" and "All" radio options. Clicking on the button will clear the history bar as well as the history kept in local storage.
If "All" is selected in the history config menu the checkbox option for "Show product details in the history bar" will be enabled. When checked, the product/version for each historic page will show alongside the page name in the history bar. Hovering the cursor over the page names in the history bar will also show the product/version as a tooltip.
Both API docs and guides can be searched for using the search field at the top of the page.
On API doc pages there is also a filter input field that filters the member rows using the filter string. In addition to filtering by string you can filter the class members by access level, inheritance, and read only. This is done using the checkboxes at the top of the page.
The checkbox at the bottom of the API class navigation tree filters the class list to include or exclude private classes.
Clicking on an empty search field will show your last 10 searches for quick navigation.
Each API doc page (with the exception of Javascript primitives pages) has a menu view of metadata relating to that class. This metadata view will have one or more of the following:
Ext.button.Button class has an alternate class name of Ext.Button). Alternate class
names are commonly maintained for backward compatibility.Runnable examples (Fiddles) are expanded on a page by default. You can collapse and expand example code blocks individually using the arrow on the top-left of the code block. You can also toggle the collapse state of all examples using the toggle button on the top-right of the page. The toggle-all state will be remembered between page loads.
Class members are collapsed on a page by default. You can expand and collapse members using the arrow icon on the left of the member row or globally using the expand / collapse all toggle button top-right.
Viewing the docs on narrower screens or browsers will result in a view optimized for a smaller form factor. The primary differences between the desktop and "mobile" view are:
The class source can be viewed by clicking on the class name at the top of an API doc page. The source for class members can be viewed by clicking on the "view source" link on the right-hand side of the member row.
The Connection class encapsulates a connection to the page's originating domain, allowing requests to be made either to a configured URL, or to a URL specified at request time.
Requests made by this class are asynchronous, and will return immediately. No data from the server will be available to the statement immediately following the request call. To process returned data, use a success callback in the request options object, or an event listener.
File uploads are not performed using normal "Ajax" techniques, that is they are not performed using XMLHttpRequests. Instead the form is submitted in the standard manner with the DOM <form> element temporarily modified to have its target set to refer to a dynamically generated, hidden <iframe> which is inserted into the document but removed after the return data has been gathered.
The server response is parsed by the browser to create the document for the IFRAME. If the server is using JSON to send the return object, then the Content-Type header must be set to "text/html" in order to tell the browser to insert the text unchanged into the document body.
Characters which are significant to an HTML parser must be sent as HTML entities, so encode < as <, & as
& etc.
The response text is retrieved from the document, and a fake XMLHttpRequest object is created containing a responseText property in order to conform to the requirements of event handlers and callbacks.
Be aware that file upload packets are sent with the content type multipart/form and some server technologies (notably JEE) may require some custom processing in order to retrieve parameter names and parameter values from the packet content.
Also note that it's not possible to check the response code of the hidden iframe, so the success handler will ALWAYS fire.
The class supports posting binary data to the server by using native browser capabilities, or a flash polyfill plugin in browsers that do not support native binary posting (e.g. Internet Explorer version 9 or less). A number of limitations exist when the polyfill is used:
true if this request should run asynchronously. Setting this to false should generally
be avoided, since it will cause the UI to be blocked, the user won't be able to interact
with the browser until the request completes.
Defaults to:
true
True if the response should be treated as binary data. If true, the binary data will be accessible as a "responseBytes" property on the response object.
Defaults to:
false
The event name to bubble, or an Array of event names.
Defaults to:
null
True to enable CORS support on the XHR object. Currently the only effect of this option is to use the XDomainRequest object instead of XMLHttpRequest if the browser is IE8 or above.
Defaults to:
false
An object containing request headers which are added to each request made by this object.
Defaults to:
null
Sets the value of defaultHeaders
defaultHeaders : Object
The default header to be sent out with any post request.
Defaults to:
'application/x-www-form-urlencoded; charset=UTF-8'
Sets the value of defaultPostHeader
defaultPostHeader : String
The header to send with Ajax requests. Also see useDefaultXhrHeader.
Defaults to:
'XMLHttpRequest'
Sets the value of defaultXhrHeader
defaultXhrHeader : String
True to add a unique cache-buster param to GET requests.
Defaults to:
true
Sets the value of disableCaching
disableCaching : Boolean
Change the parameter which is sent went disabling caching through a cache buster.
Defaults to:
'_dc'
Sets the value of disableCachingParam
disableCachingParam : String
A config object containing one or more event handlers to be added to this object during initialization. This
should be a valid listeners config object as specified in the addListener example for attaching
multiple handlers at once.
See the Event guide for more
Note: It is bad practice to specify a listener's config when you are defining a class using Ext.define().
Instead, only specify listeners when you are instantiating your class with Ext.create().
Defaults to:
null
The default HTTP method to be used for requests.
If not set, but request params are present, POST will be used; otherwise, GET will be used.
Defaults to:
null
true to send the defaultXhrHeader along with any request.
Defaults to:
true
Sets the value of useDefaultXhrHeader
useDefaultXhrHeader : Boolean
True to set withCredentials = true on the XHR object
Defaults to:
false
Sets the value of withCredentials
withCredentials : Boolean
The value true causes config values to be stored on instances using a
property name prefixed with an underscore ("_") character. A value of false
stores config values as properties using their exact name (no prefix).
Defaults to:
false
Available since: 5.0.0
The value true instructs the initConfig method to only honor values for
properties declared in the config block of a class. When false, properties
that are not declared in a config block will be placed on the instance.
Defaults to:
true
Available since: 5.0.0
Creates the appropriate XHR transport for this browser.
Defaults to:
(function() {
var options = [
function() {
return new XMLHttpRequest();
},
function() {
return new ActiveXObject('MSXML2.XMLHTTP.3.0');
},
function() {
return new ActiveXObject('MSXML2.XMLHTTP');
},
function() {
return new ActiveXObject('Microsoft.XMLHTTP');
}
],
i = 0,
len = options.length,
xhr;
for (; i < len; ++i) {
try {
xhr = options[i];
xhr();
break;
} catch (e) {}
}
return xhr;
}())
This object holds a key for any event that has a listener. The listener may be set directly on the instance, or on its class or a super class or on the Ext.app.EventBus. The values of this object are truthy (a non-zero number) and falsy (0 or undefined). They do not represent an exact count of listeners. The value for an event is truthy if the event must be fired and is falsy if there is no need to fire the event.
The intended use of this property is to avoid the expense of fireEvent calls when there are no listeners. This can be particularly helpful when one would otherwise have to call fireEvent hundreds or thousands of times. It is used like this:
if (this.hasListeners.foo) {
this.fireEvent('foo', this, arg1);
}
This property is set to true during the call to initConfig.
Defaults to:
false
Available since: 5.0.0
This property is set to true if this instance is the first of its class.
Defaults to:
false
Available since: 5.0.0
This value is true and is used to identify plain objects from instances of
a defined class.
Defaults to:
true
Get the reference to the current class from which this object was instantiated. Unlike Ext.Base#statics,
this.self is scope-dependent and it's meant to be used for dynamic inheritance. See Ext.Base#statics
for a detailed comparison
Ext.define('My.Cat', {
statics: {
speciesName: 'Cat' // My.Cat.speciesName = 'Cat'
},
constructor: function() {
alert(this.self.speciesName); // dependent on 'this'
},
clone: function() {
return new this.self();
}
});
Ext.define('My.SnowLeopard', {
extend: 'My.Cat',
statics: {
speciesName: 'Snow Leopard' // My.SnowLeopard.speciesName = 'Snow Leopard'
}
});
var cat = new My.Cat(); // alerts 'Cat'
var snowLeopard = new My.SnowLeopard(); // alerts 'Snow Leopard'
var clone = snowLeopard.clone();
alert(Ext.getClassName(clone)); // alerts 'My.SnowLeopard'
Defaults to:
Base
Aborts an active request.
request : Object (optional)
Defaults to the last request
Appends an after-event handler.
Same as addListener with order set to 'after'.
eventName : String/String[]/Object
The name of the event to listen for.
fn : Function/String
The method the event invokes.
scope : Object (optional)
The scope for fn.
options : Object (optional)
An object containing handler configuration.
Appends a before-event handler. Returning false from the handler will stop the event.
Same as addListener with order set to 'before'.
eventName : String/String[]/Object
The name of the event to listen for.
fn : Function/String
The method the event invokes.
scope : Object (optional)
The scope for fn.
options : Object (optional)
An object containing handler configuration.
This method applies a versioned, deprecation declaration to this class. This
is typically called by the deprecated config.
deprecations : Object
Adds the specified events to the list of events which this Observable may fire.
eventNames : Object/String...
Either an object with event names as properties with a value of true
or the first event name string if multiple event names are being passed as separate parameters.
Deprecated since version 2.0
It's no longer needed to add events before firing.
Appends an event handler to this object. You can review the available handlers by looking at the 'events' section of the documentation for the component you are working with.
Using the options argument, it is possible to combine different types of listeners:
A delayed, one-time listener:
container.addListener('tap', this.handleTap, this, {
single: true,
delay: 100
});
The method also allows for a single argument to be passed which is a config object containing properties which specify multiple events. For example:
container.addListener({
tap : this.onTap,
swipe: this.onSwipe,
scope: this // Important. Ensure "this" is correct during handler execution
});
One can also specify options for each event handler separately:
container.addListener({
tap : { fn: this.onTap, scope: this, single: true },
swipe: { fn: button.onSwipe, scope: button }
});
See the Events Guide for more.
eventName : String/String[]/Object
The name of the event to listen for. May also be an object who's property names are event names.
fn : Function/String
The method the event invokes. Will be called with arguments given to
fireEvent plus the options parameter described below.
scope : Object (optional)
The scope (this reference) in which the handler function is executed. If
omitted, defaults to the object which fired the event.
options : Object (optional)
An object containing handler configuration.
This object may contain any of the following properties:
scope : Object (optional)
The scope (this reference) in which the handler function is executed. If omitted, defaults to the object
which fired the event.
delay : Number (optional)
The number of milliseconds to delay the invocation of the handler after the event fires.
single : Boolean (optional)
true to add a handler to handle just the next firing of the event, and then remove itself.
order : String (optional)
The order of when the listener should be added into the listener queue.
If you set an order of before and the event you are listening to is preventable, you can return false and it will stop the event.
Available options are before, current and after.
Defaults to:
current
buffer : Number (optional)
Causes the handler to be delayed by the specified number of milliseconds. If the event fires again within that time, the original handler is not invoked, but the new handler is scheduled in its place.
element : String (optional)
If this observable is a Component, allows you to add a listener onto a element of the component using the element's reference.
Ext.create('Ext.Component', {
listeners: {
element: 'element',
tap: function() {
alert('element tap!');
}
}
});
In Sencha Touch, All components have the element reference, which is the outer
most element of the component. Ext.Container also has the innerElement
element which contains all children. In most cases element is adequate.
delegate : String (optional)
For Ext.dom.Element, a simple DOM selector to filter the target or look for a descendant of the target.
Sencha Touch Components can use Ext.ComponentQuery selectors to filter child Components.
// Create a container with a two children; a button and a toolbar
var container = Ext.create('Ext.Container', {
items: [
{
xtype: 'toolbar',
docked: 'top',
title: 'My Toolbar'
},
{
xtype: 'button',
text: 'My Button'
}
]
});
container.addListener({
// Ext.Buttons have an xtype of 'button', so we use that are a selector for our delegate
delegate: 'button',
tap: function() {
alert('Button tapped!');
}
});
capture : Boolean
true to initiate capture which will fire the
listeners on the target Element before any descendant Elements. Normal events
start with the target element and propagate upward to ancestor elements, whereas
captured events propagate from the top of the DOM downward to descendant elements.
This option achieves the same result as the useCapture parameter in the standard
JavaScript addEventListener method.
order : String (optional)
The order of when the listener should be added into the listener queue.
Possible values are before, current and after.
Defaults to: 'current'
Adds listeners to any Observable object (or Element) which are automatically removed when this Component is destroyed.
object : Ext.mixin.Observable/HTMLElement
The item to which to add a listener/listeners.
eventName : Object/String
The event name, or an object containing event name properties.
fn : Function (optional)
If the eventName parameter was an event name, this is the handler function.
scope : Object (optional)
If the eventName parameter was an event name, this is the scope in which
the handler function is executed.
options : Object (optional)
If the eventName parameter was an event name, this is the
addListener options.
Deprecated since version 2.0
All listeners are now automatically managed where necessary. Simply use addListener.
Call the "parent" method of the current method. That is the method previously overridden by derivation or by an override (see Ext#define).
Ext.define('My.Base', {
constructor: function (x) {
this.x = x;
},
statics: {
method: function (x) {
return x;
}
}
});
Ext.define('My.Derived', {
extend: 'My.Base',
constructor: function () {
this.callParent([21]);
}
});
var obj = new My.Derived();
alert(obj.x); // alerts 21
This can be used with an override as follows:
Ext.define('My.DerivedOverride', {
override: 'My.Derived',
constructor: function (x) {
this.callParent([x*2]); // calls original My.Derived constructor
}
});
var obj = new My.Derived();
alert(obj.x); // now alerts 42
This also works with static methods.
Ext.define('My.Derived2', {
extend: 'My.Base',
statics: {
method: function (x) {
return this.callParent([x*2]); // calls My.Base.method
}
}
});
alert(My.Base.method(10)); // alerts 10
alert(My.Derived2.method(10)); // alerts 20
Lastly, it also works with overridden static methods.
Ext.define('My.Derived2Override', {
override: 'My.Derived2',
statics: {
method: function (x) {
return this.callParent([x*2]); // calls My.Derived2.method
}
}
});
alert(My.Derived2.method(10); // now alerts 40
To override a method and replace it and also call the superclass method, use callSuper. This is often done to patch a method to fix a bug.
args : Array/Arguments
The arguments, either an array or the arguments object
from the current method, for example: this.callParent(arguments)
Returns the result of calling the parent method
This method is used by an override to call the superclass method but bypass any overridden method. This is often done to "patch" a method that contains a bug but for whatever reason cannot be fixed directly.
Consider:
Ext.define('Ext.some.Class', {
method: function () {
console.log('Good');
}
});
Ext.define('Ext.some.DerivedClass', {
extend: 'Ext.some.Class',
method: function () {
console.log('Bad');
// ... logic but with a bug ...
this.callParent();
}
});
To patch the bug in Ext.some.DerivedClass.method, the typical solution is to create an
override:
Ext.define('App.patches.DerivedClass', {
override: 'Ext.some.DerivedClass',
method: function () {
console.log('Fixed');
// ... logic but with bug fixed ...
this.callSuper();
}
});
The patch method cannot use callParent to call the superclass method since
that would call the overridden method containing the bug. In other words, the
above patch would only produce "Fixed" then "Good" in the console log, whereas,
using callParent would produce "Fixed" then "Bad" then "Good".
args : Array/Arguments
The arguments, either an array or the arguments object
from the current method, for example: this.callSuper(arguments)
Returns the result of calling the superclass method
actionFn : Object
eventName : Object
fn : Object
scope : Object
options : Object
order : Object
Cleans up any left over information from the request
request : Object
The request
Creates an event handling function which re-fires the event from this object as the passed event name.
newName : String
This method is called to cleanup an object and its resources. After calling this method, the object should not be used any further.
name : Object
fn : Object
scope : Object
options : Object
order : Object
Enables events fired by this Observable to bubble up an owner hierarchy by calling this.getBubbleTarget() if
present. There is no implementation in the Observable base class.
events : String/String[]
The event name to bubble, or an Array of event names.
Fires the specified event with the passed parameters and execute a function (action)
at the end if there are no listeners that return false.
eventName : String
The name of the event to fire.
args : Array
Arguments to pass to handers.
fn : Function
Action.
scope : Object
Scope of fn.
Fires the specified event with the passed parameters (minus the event name, plus the options object passed
to addListener).
The first argument is the name of the event. Every other argument passed will be available when you listen for the event.
Firstly, we set up a listener for our new event.
this.on('myevent', function(arg1, arg2, arg3, arg4, options, e) {
console.log(arg1); // true
console.log(arg2); // 2
console.log(arg3); // { test: 'foo' }
console.log(arg4); // 14
console.log(options); // the options added when adding the listener
console.log(e); // the event object with information about the event
});
And then we can fire off the event.
this.fireEvent('myevent', true, 2, { test: 'foo' }, 14);
An event may be set to bubble up an Observable parent hierarchy by calling enableBubble.
eventName : String
The name of the event to fire.
args : Object...
Variable number of parameters are passed to handlers.
Returns false if any of the handlers return false.
Fires the specified event with the passed parameter list.
An event may be set to bubble up an Observable parent hierarchy (See Ext.Component#getBubbleTarget) by calling enableBubble.
eventName : String
The name of the event to fire.
args : Object[]
An array of parameters which are passed to handlers.
returns false if any of the handlers return false otherwise it returns true.
Gets binary data from the xhr response object and returns it as a byte array
xhr : Object
the xhr response object
Returns a specified config property value. If the name parameter is not passed, all current configuration options will be returned as key value pairs.
name : String (optional)
The name of the config property to get.
peek : Boolean (optional)
true to peek at the raw value without calling the getter.
Defaults to: false
The config property value.
Gets the form object from options.
options : Object
The request options
The form, null if not passed
Retrieves the id of this component. Will autogenerate an id if one has not already been set.
id
Returns the initial configuration passed to constructor when instantiating this class.
name : String (optional)
Name of the config option to return.
The full config object or a single config value
when name parameter specified.
Gets the most recent request
The request. Null if there is no recent request
Creates the appropriate XDR transport for this browser.
Checks to see if this object has any listeners for a specified event
eventName : String
The name of the event to check for
True if the event is being listened for, else false
Initialize configuration for this class. a typical example:
Ext.define('My.awesome.Class', {
// The default config
config: {
name: 'Awesome',
isAwesome: true
},
constructor: function(config) {
this.initConfig(config);
}
});
var awesome = new My.awesome.Class({
name: 'Super Awesome'
});
alert(awesome.getName()); // 'Super Awesome'
instanceConfig : Object
this
Injects a vbscript tag containing a 'getIEByteArray' method for reading binary data from an xhr response in IE8 and below.
Detects whether the form is intended to be used for an upload.
options : Object
Determines whether this object has a request outstanding.
request : Object (optional)
Defaults to the last transaction
True if there is an outstanding request.
Checks if all events, or a specific event, is suspended.
eventName : String (optional)
The name of the specific event to check
true if events are suspended
Adds a "destroyable" object to an internal list of objects that will be destroyed
when this instance is destroyed (via destroy).
name : String
value : Object
The value passed.
Alias for addManagedListener. Adds listeners to any Observable object (or Element) which are automatically removed when this Component is destroyed.
object : Ext.mixin.Observable/HTMLElement
The item to which to add a listener/listeners.
eventName : Object/String
The event name, or an object containing event name properties.
fn : Function (optional)
If the eventName parameter was an event name, this is the handler function.
scope : Object (optional)
If the eventName parameter was an event name, this is the scope in which
the handler function is executed.
options : Object (optional)
If the eventName parameter was an event name, this is the
addListener options.
Deprecated since version 2.0.0
This is now done automatically
Alias for removeManagedListener. Adds listeners to any Observable object (or Element) which are automatically removed when this Component is destroyed.
object : Ext.mixin.Observable/HTMLElement
The item to which to add a listener/listeners.
eventName : Object/String
The event name, or an object containing event name properties.
fn : Function (optional)
If the eventName parameter was an event name, this is the handler function.
scope : Object (optional)
If the eventName parameter was an event name, this is the scope in which
the handler function is executed.
Deprecated since version 2.0.0
This is now done automatically
Creates the appropriate XHR transport for a given request on this browser. On IE
this may be an XDomainRequest rather than an XMLHttpRequest.
options : Object
Alias for addListener. Appends an event handler to this object. You can review the available handlers by looking at the 'events' section of the documentation for the component you are working with.
Using the options argument, it is possible to combine different types of listeners:
A delayed, one-time listener:
container.addListener('tap', this.handleTap, this, {
single: true,
delay: 100
});
The method also allows for a single argument to be passed which is a config object containing properties which specify multiple events. For example:
container.addListener({
tap : this.onTap,
swipe: this.onSwipe,
scope: this // Important. Ensure "this" is correct during handler execution
});
One can also specify options for each event handler separately:
container.addListener({
tap : { fn: this.onTap, scope: this, single: true },
swipe: { fn: button.onSwipe, scope: button }
});
See the Events Guide for more.
eventName : String/String[]/Object
The name of the event to listen for. May also be an object who's property names are event names.
fn : Function/String
The method the event invokes. Will be called with arguments given to
fireEvent plus the options parameter described below.
scope : Object (optional)
The scope (this reference) in which the handler function is executed. If
omitted, defaults to the object which fired the event.
options : Object (optional)
An object containing handler configuration.
This object may contain any of the following properties:
scope : Object (optional)
The scope (this reference) in which the handler function is executed. If omitted, defaults to the object
which fired the event.
delay : Number (optional)
The number of milliseconds to delay the invocation of the handler after the event fires.
single : Boolean (optional)
true to add a handler to handle just the next firing of the event, and then remove itself.
order : String (optional)
The order of when the listener should be added into the listener queue.
If you set an order of before and the event you are listening to is preventable, you can return false and it will stop the event.
Available options are before, current and after.
Defaults to:
current
buffer : Number (optional)
Causes the handler to be delayed by the specified number of milliseconds. If the event fires again within that time, the original handler is not invoked, but the new handler is scheduled in its place.
element : String (optional)
If this observable is a Component, allows you to add a listener onto a element of the component using the element's reference.
Ext.create('Ext.Component', {
listeners: {
element: 'element',
tap: function() {
alert('element tap!');
}
}
});
In Sencha Touch, All components have the element reference, which is the outer
most element of the component. Ext.Container also has the innerElement
element which contains all children. In most cases element is adequate.
delegate : String (optional)
For Ext.dom.Element, a simple DOM selector to filter the target or look for a descendant of the target.
Sencha Touch Components can use Ext.ComponentQuery selectors to filter child Components.
// Create a container with a two children; a button and a toolbar
var container = Ext.create('Ext.Container', {
items: [
{
xtype: 'toolbar',
docked: 'top',
title: 'My Toolbar'
},
{
xtype: 'button',
text: 'My Button'
}
]
});
container.addListener({
// Ext.Buttons have an xtype of 'button', so we use that are a selector for our delegate
delegate: 'button',
tap: function() {
alert('Button tapped!');
}
});
capture : Boolean
true to initiate capture which will fire the
listeners on the target Element before any descendant Elements. Normal events
start with the target element and propagate upward to ancestor elements, whereas
captured events propagate from the top of the DOM downward to descendant elements.
This option achieves the same result as the useCapture parameter in the standard
JavaScript addEventListener method.
order : String (optional)
The order of when the listener should be added into the listener queue.
Possible values are before, current and after.
Defaults to: 'current'
Alias for addAfterListener. Appends an after-event handler.
Same as addListener with order set to 'after'.
eventName : String/String[]/Object
The name of the event to listen for.
fn : Function/String
The method the event invokes.
scope : Object (optional)
The scope for fn.
options : Object (optional)
An object containing handler configuration.
Alias for addBeforeListener.
Appends a before-event handler. Returning false from the handler will stop the event.
Same as addListener with order set to 'before'.
eventName : String/String[]/Object
The name of the event to listen for.
fn : Function/String
The method the event invokes.
scope : Object (optional)
The scope for fn.
options : Object (optional)
An object containing handler configuration.
To be called when the request has come back from the server
request : Object
The response
Fires when the state of the xhr changes
request : Object
The request
Callback handler for the upload function. After we've submitted the form via the iframe this creates a bogus response object to simulate an XHR and populates its responseText from the now-loaded iframe's document body (or a textarea inside the body). We then clean up by removing the iframe
frame : Object
options : Object
Creates and opens an appropriate XHR transport for a given request on this browser. This logic is contained in an individual method to allow for overrides to process all of the parameters and options and return a suitable, open connection.
options : Object
requestOptions : Object
async : Object
username : Object
password : Object
Checks if the response status was successful
status : Number
The status code
An object containing success/status state
args : Object
fn : Object
scope : Object
options : Object
order : Object
Relays selected events from the specified Observable as if the events were fired by this.
object : Object
The Observable whose events this object is to relay.
events : String/Array/Object
Array of event names to relay.
Removes a before-event handler.
Same as removeListener with order set to 'after'.
eventName : String/String[]/Object
The name of the event the handler was associated with.
fn : Function/String
The handler to remove.
scope : Object (optional)
The scope originally specified for fn.
options : Object (optional)
Extra options object.
Removes a before-event handler.
Same as removeListener with order set to 'before'.
eventName : String/String[]/Object
The name of the event the handler was associated with.
fn : Function/String
The handler to remove.
scope : Object (optional)
The scope originally specified for fn.
options : Object (optional)
Extra options object.
Removes an event handler.
eventName : String/String[]/Object
The type of event the handler was associated with.
fn : Function/String
The handler to remove. This must be a reference to the function passed into the addListener call.
scope : Object (optional)
The scope originally specified for the handler. It must be the same as the scope argument specified in the original call to addListener or the listener will not be removed.
options : Object (optional)
Extra options object. See addListener for details.
order : String (optional)
The order of the listener to remove.
Possible values are before, current and after.
Defaults to: 'current'
Adds listeners to any Observable object (or Element) which are automatically removed when this Component is destroyed.
object : Ext.mixin.Observable/HTMLElement
The item to which to add a listener/listeners.
eventName : Object/String
The event name, or an object containing event name properties.
fn : Function (optional)
If the eventName parameter was an event name, this is the handler function.
scope : Object (optional)
If the eventName parameter was an event name, this is the scope in which
the handler function is executed.
Deprecated since version 2.0
All listeners are now automatically managed where necessary. Simply use removeListener.
Sends an HTTP request to a remote server.
Important: Ajax server requests are asynchronous, and this call will return before the response has been received. Process any returned data in a callback function.
Ext.Ajax.request({
url: 'ajax_demo/sample.json',
success: function(response, opts) {
var obj = Ext.decode(response.responseText);
console.dir(obj);
},
failure: function(response, opts) {
console.log('server-side failure with status code ' + response.status);
}
});
To execute a callback function in the correct scope, use the scope option.
options : Object
An object which may contain the following properties:
(The options object may also contain any other property which might be needed to perform postprocessing in a callback because it is passed to callback functions.)
The URL to which to send the request, or a function
to call which returns a URL string. The scope of the function is specified by the scope option.
Defaults to the configured url.
async : Boolean
true if this request should run asynchronously.
Setting this to false should generally be avoided, since it will cause the UI to be
blocked, the user won't be able to interact with the browser until the request completes.
Defaults to true.
params : Object / String / Function
An object containing properties which are
used as parameters to the request, a url encoded string or a function to call to get either. The scope
of the function is specified by the scope option.
method : String
The HTTP method to use for the request. Defaults to the configured method, or if no method was configured, "GET" if no parameters are being sent, and "POST" if parameters are being sent. Note that the method name is case-sensitive and should be all caps.
callback : Function
The function to be called upon receipt of the HTTP response. The callback is called regardless of success or failure and is passed the following parameters:
options : Object
The parameter to the request call.
success : Boolean
True if the request succeeded.
response : Object
The XMLHttpRequest object containing the response data. See www.w3.org/TR/XMLHttpRequest/ for details about accessing elements of the response.
success : Function
The function to be called upon success of the request. The callback is passed the following parameters:
response : Object
The XMLHttpRequest object containing the response data.
options : Object
The parameter to the request call.
failure : Function
The function to be called upon failure of the request. The callback is passed the following parameters:
response : Object
The XMLHttpRequest object containing the response data.
options : Object
The parameter to the request call.
scope : Object
The scope in which to execute the callbacks: The "this" object for
the callback function. If the url, or params options were specified as functions from which to
draw values, then this also serves as the scope for those function calls. Defaults to the browser
window.
timeout : Number
The timeout in milliseconds to be used for this request. Defaults to 30 seconds.
form : Ext.dom.Element / HTMLElement / String
The <form> Element or the id of the <form>
to pull parameters from.
isUpload : Boolean
Only meaningful when used with the form option.
True if the form object is a file upload (will be set automatically if the form was configured
with enctype "multipart/form-data").
File uploads are not performed using normal "Ajax" techniques, that is they are not
performed using XMLHttpRequests. Instead the form is submitted in the standard manner with the
DOM <form> element temporarily modified to have its target
set to refer to a dynamically generated, hidden <iframe> which is inserted
into the document but removed after the return data has been gathered.
The server response is parsed by the browser to create the document for the IFRAME. If the server is using JSON to send the return object, then the Content-Type header must be set to "text/html" in order to tell the browser to insert the text unchanged into the document body.
The response text is retrieved from the document, and a fake XMLHttpRequest object is created
containing a responseText property in order to conform to the requirements of event handlers
and callbacks.
Be aware that file upload packets are sent with the content type multipart/form and some server technologies (notably JEE) may require some custom processing in order to retrieve parameter names and parameter values from the packet content.
headers : Object
Request headers to set for the request.
The XHR will attempt to set an appropriate Content-Type based on the params/data passed
to the request. To prevent this, setting the Content-Type header to null or undefined
will not attempt to set any Content-Type and it will be left to the browser.
xmlData : Object
XML document to use for the post. Note: This will be used instead of params for the post data. Any params will be appended to the URL.
JSON data to use as the post. Note: This will be used instead of params for the post data. Any params will be appended to the URL.
rawData : String
A raw string to use as the post. Note: This will be used instead of params for the post data. Any params will be appended to the URL.
binaryData : Array
An array of bytes to submit in binary form. Any params will be appended to the URL. If binaryData is present, you must set binary to true and options.method to POST.
disableCaching : Boolean
True to add a unique cache-buster param to GET requests.
withCredentials : Boolean
True to add the withCredentials property to the XHR object
username : String
The username to pass when using withCredentials.
password : String
The password to pass when using withCredentials.
binary : Boolean
True if the response should be treated as binary data. If true, the binary data will be accessible as a "responseBytes" property on the response object.
The request object. This may be used to cancel the request.
This method determines the scope (the this pointer) of named listeners that have
not be given a specific scope. For example:
component.on({
click: 'onClick'
});
The default implementation of this method returns this object. Components and other observable objects that have natural hierarchies can override this method to pick the desired scope using other means.
Available since: 5.0.0
defaultScope : Object (optional)
The default scope to return if none is found.
Defaults to: this
The object on which non-scoped, named listeners should be fired.
Resumes firing of the named event(s).
After calling this method to resume events, the events will fire when requested to fire.
Note that if the suspendEvent method is called multiple times for a certain event, this converse method will have to be called the same number of times for it to resume firing.
eventName : String...
Multiple event names to resume.
Resumes firing events (see suspendEvents).
discardQueuedEvents : Boolean
Pass as true to discard any queued events.
Sets a single/multiple configuration options.
name : String/Object
The name of the property to set, or a set of key value pairs to set.
value : Object (optional)
The value to set for the name parameter.
this
Sets various options such as the url, params for the request
options : Object
The initial options
scope : Object
The scope to execute in
The params for the request
Setup all the headers for the request
xhr : Object
The xhr object
options : Object
The options for the request
data : Object
The data for the request
params : Object
The params for the request
Template method for overriding method
options : Object
method : String
The modified method
This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.
Template method for overriding params
options : Object
params : String
The modified params
This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.
Template method for overriding url
options : Object
url : String
The modified url
This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.
Get the reference to the class from which this object was instantiated. Note that unlike Ext.Base#self,
this.statics() is scope-independent and it always returns the class from which it was called, regardless of what
this points to during run-time
Ext.define('My.Cat', {
statics: {
totalCreated: 0,
speciesName: 'Cat' // My.Cat.speciesName = 'Cat'
},
constructor: function() {
var statics = this.statics();
alert(statics.speciesName); // always equals to 'Cat' no matter what 'this' refers to
// equivalent to: My.Cat.speciesName
alert(this.self.speciesName); // dependent on 'this'
statics.totalCreated++;
},
clone: function() {
var cloned = new this.self(); // dependent on 'this'
cloned.groupName = this.statics().speciesName; // equivalent to: My.Cat.speciesName
return cloned;
}
});
Ext.define('My.SnowLeopard', {
extend: 'My.Cat',
statics: {
speciesName: 'Snow Leopard' // My.SnowLeopard.speciesName = 'Snow Leopard'
},
constructor: function() {
this.callParent();
}
});
var cat = new My.Cat(); // alerts 'Cat', then alerts 'Cat'
var snowLeopard = new My.SnowLeopard(); // alerts 'Cat', then alerts 'Snow Leopard'
var clone = snowLeopard.clone();
alert(Ext.getClassName(clone)); // alerts 'My.SnowLeopard'
alert(clone.groupName); // alerts 'Cat'
alert(My.Cat.totalCreated); // alerts 3
Suspends firing of the named event(s).
After calling this method to suspend events, the events will no longer fire when requested to fire.
Note that if this is called multiple times for a certain event, the converse method resumeEvent will have to be called the same number of times for it to resume firing.
eventName : String...
Multiple event names to suspend.
Suspends the firing of all events. (see resumeEvents)
queueSuspended : Boolean
true to queue up suspended events to be fired
after the resumeEvents call instead of discarding all suspended events.
Alias for removeListener. Removes an event handler.
eventName : String/String[]/Object
The type of event the handler was associated with.
fn : Function/String
The handler to remove. This must be a reference to the function passed into the addListener call.
scope : Object (optional)
The scope originally specified for the handler. It must be the same as the scope argument specified in the original call to addListener or the listener will not be removed.
options : Object (optional)
Extra options object. See addListener for details.
order : String (optional)
The order of the listener to remove.
Possible values are before, current and after.
Defaults to: 'current'
Alias for removeAfterListener. Removes a before-event handler.
Same as removeListener with order set to 'after'.
eventName : String/String[]/Object
The name of the event the handler was associated with.
fn : Function/String
The handler to remove.
scope : Object (optional)
The scope originally specified for fn.
options : Object (optional)
Extra options object.
Alias for removeBeforeListener. Removes a before-event handler.
Same as removeListener with order set to 'before'.
eventName : String/String[]/Object
The name of the event the handler was associated with.
fn : Function/String
The handler to remove.
scope : Object (optional)
The scope originally specified for fn.
options : Object (optional)
Extra options object.
Destroys a given set of linked objects. This is only needed if
the linked object is being destroyed before this instance.
names : String[]
The names of the linked objects to destroy.
this
Uploads a form using a hidden iframe.
form : String/HTMLElement/Ext.dom.Element
The form to upload
url : String
The url to post to
params : String
Any extra parameters to pass
options : Object
The initial options
Adds new config properties to this class. This is called for classes when they are declared, then for any mixins that class may define and finally for any overrides defined that target the class.
config : Object
mixinClass : Class (optional)
The mixin class if the configs are from a mixin.
Add methods / properties to the prototype of this class.
Ext.define('My.awesome.Cat', {
constructor: function() {
...
}
});
My.awesome.Cat.addMembers({
meow: function() {
alert('Meowww...');
}
});
var kitty = new My.awesome.Cat();
kitty.meow();
members : Object
The members to add to this class.
isStatic : Boolean (optional)
Pass true if the members are static.
Defaults to: false
privacy : Boolean (optional)
Pass true if the members are private. This
only has meaning in debug mode and only for methods.
Defaults to: false
Add / override static properties of this class.
Ext.define('My.cool.Class', {
...
});
My.cool.Class.addStatics({
someProperty: 'someValue', // My.cool.Class.someProperty = 'someValue'
method1: function() { ... }, // My.cool.Class.method1 = function() { ... };
method2: function() { ... } // My.cool.Class.method2 = function() { ... };
});
members : Object
this
Borrow another class' members to the prototype of this class.
Ext.define('Bank', {
money: '$$$',
printMoney: function() {
alert('$$$$$$$');
}
});
Ext.define('Thief', {
...
});
Thief.borrow(Bank, ['money', 'printMoney']);
var steve = new Thief();
alert(steve.money); // alerts '$$$'
steve.printMoney(); // alerts '$$$$$$$'
fromClass : Ext.Base
The class to borrow members from
members : Array/String
The names of the members to borrow
this
Create a new instance of this Class.
Ext.define('My.cool.Class', {
...
});
My.cool.Class.create({
someConfig: true
});
All parameters are passed to the constructor of the class.
the created instance.
Create aliases for existing prototype methods. Example:
Ext.define('My.cool.Class', {
method1: function() { ... },
method2: function() { ... }
});
var test = new My.cool.Class();
My.cool.Class.createAlias({
method3: 'method1',
method4: 'method2'
});
test.method3(); // test.method1()
My.cool.Class.createAlias('method5', 'method3');
test.method5(); // test.method3() -> test.method1()
alias : String/Object
The new method name, or an object to set multiple aliases. See flexSetter
origin : String/Object
The original method name
Returns the Ext.Configurator for this class.
Get the current class' name in string format.
Ext.define('My.cool.Class', {
constructor: function() {
alert(this.self.getName()); // alerts 'My.cool.Class'
}
});
My.cool.Class.getName(); // 'My.cool.Class'
className
Used internally by the mixins pre-processor
name : Object
mixinClass : Object
Override members of this class. Overridden methods can be invoked via callParent.
Ext.define('My.Cat', {
constructor: function() {
alert("I'm a cat!");
}
});
My.Cat.override({
constructor: function() {
alert("I'm going to be a cat!");
this.callParent(arguments);
alert("Meeeeoooowwww");
}
});
var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
// alerts "I'm a cat!"
// alerts "Meeeeoooowwww"
Direct use of this method should be rare. Use Ext.define instead:
Ext.define('My.CatOverride', {
override: 'My.Cat',
constructor: function() {
alert("I'm going to be a cat!");
this.callParent(arguments);
alert("Meeeeoooowwww");
}
});
The above accomplishes the same result but can be managed by the Ext.Loader which can properly order the override and its target class and the build process can determine whether the override is needed based on the required state of the target class (My.Cat).
members : Object
The properties to add to this class. This should be specified as an object literal containing one or more properties.
this class
Fires before a network request is made to retrieve a data object.
conn : Ext.data.Connection
This Connection object.
options : Object
The options config object passed to the request method.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires if the request was successfully completed.
conn : Ext.data.Connection
This Connection object.
response : Object
The XHR object containing the response data. See The XMLHttpRequest Object for details.
options : Object
The options config object passed to the request method.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
Fires if an error HTTP status was returned from the server. This event may also be listened to in the event that a request has timed out or has been aborted. See HTTP Status Code Definitions for details of HTTP status codes.
conn : Ext.data.Connection
This Connection object.
response : Object
The XHR object containing the response data. See The XMLHttpRequest Object for details.
options : Object
The options config object passed to the request method.
eOpts : Object
The options object passed to Ext.util.Observable.addListener.
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