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Terms, Icons, and Labels

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.

Access Levels

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.

Member Types

Member Syntax

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).

lookupComponent ( item ) : Ext.Component
protected

Called when a raw config object is added to this container either during initialization of the items config, or when new items are added), or {@link #insert inserted.

This method converts the passed object into an instanced child component.

This may be overridden in subclasses when special processing needs to be applied to child creation.

Parameters

item :  Object

The config object being added.

Returns
Ext.Component

The component to be added.

Let's look at each part of the member row:

Member Flags

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.

Class Icons

- 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

Member Icons

- 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

Class Member Quick-Nav Menu

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.

Getter and Setter Methods

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.

History Bar

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.

Search and Filters

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.

API Doc Class Metadata

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:

Expanding and Collapsing Examples and Class Members

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.

Desktop -vs- Mobile View

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:

Viewing the Class Source

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.

Ext JS 7.2.0 - Classic Toolkit


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Ext.Config private

NPM Package

@sencha/ext-core

Hierarchy

Ext.Config
NOTE: This is a private utility class for internal use by the framework. Don't rely on its existence.

Summary

This class manages a config property. Instances of this type are created and cached as classes declare their config properties. One instance of this class is created per config property name.

 Ext.define('MyClass', {
     config: {
         foo: 42
     }
 });

This uses the cached Ext.Config instance for the "foo" property.

When config properties apply options to config properties a prototype chained object is created from the cached instance. For example:

 Ext.define('MyClass', {
     config: {
         foo: {
             $value: 42,
             lazy: true
         }
     }
 });

This creates a prototype chain to the cached "foo" instance of Ext.Config and applies the lazy option to that new instance. This chained instance is then kept by the Ext.Configurator for that class.

No members found using the current filters

configs

Optional Configs

cached : Boolean
private pri

When set as true the config property will be stored on the class prototype once the first instance has had a chance to process the default value.

Defaults to:

false

Available since: 5.0.0

evented : Boolean
private pri

When set as true the config property will be treated as a Ext.Evented.

Defaults to:

false

Available since: 6.0.0

lazy : Boolean
private pri

When set as true the config property will not be immediately initialized during the initConfig call.

Defaults to:

false

Available since: 5.0.0

merge : Function

This function if supplied will be called as classes or instances provide values that need to be combined with inherited values. The function should return the value that will be the config value. Further calls may receive such returned values as oldValue.

Properties

newValue : Mixed

The new value to merge with the old.

oldValue : Mixed

The current value prior to newValue being merged.

target : Mixed

The class or instance to which the merged config value will be applied.

mixinClass : Ext.Class

The mixin providing the newValue or null if the newValue is not being provided by a mixin.

properties

Instance Properties

name : String
readonly ro private pri

The name of this config property.

Defaults to:

name

Available since: 5.0.0

names : Object
readonly ro private pri

This object holds the cached names used to lookup properties or methods for this config property. The properties of this object are explained in the context of an example property named "foo".

Defaults to:

{
    internal: '_' + name,
    initializing: 'is' + capitalizedName + 'Initializing',
    apply: 'apply' + capitalizedName,
    update: 'update' + capitalizedName,
    get: 'get' + capitalizedName,
    set: 'set' + capitalizedName,
    initGet: 'initGet' + capitalizedName,
    changeEvent: name.toLowerCase() + 'change'
}

Available since: 5.0.0

Properties

internal : String

The default backing property ("_foo").

initializing : String

The property that is true when the config is being initialized ("isFooInitializing").

apply : String

The name of the applier method ("applyFoo").

update : String

The name of the updater method ("updateFoo").

get : String

The name of the getter method ("getFoo").

set : String

The name of the setter method ("setFoo").

initGet : String

The name of the initializing getter ("initGetFoo").

changeEvent : String

The name of the change event ("foochange").

methods

Instance Methods

getInternalName ( target ) : String

Returns the name of the property that stores this config on the given instance or class prototype.

Parameters

target :  Object

Returns

:String

mergeSets ( newValue, oldValue, [preserveExisting] ) : Object
private pri

Merges the newValue and the oldValue assuming that these are basically objects the represent sets. For example something like:

 {
     foo: true,
     bar: true
 }

The merge process converts arrays like the following into the above:

 [ 'foo', 'bar' ]

Available since: 5.0.0

Parameters

newValue :  String/String[]/Object

oldValue :  Object

preserveExisting :  Boolean (optional)

Defaults to: false

Returns

:Object

Ext JS 7.2.0 - Classic Toolkit