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.
This mixin provides a common interface for objects that can be positioned, e.g. Ext.Component and Ext.dom.Element
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:
true
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
Setting this property to false will prevent nulling object references
on a Class instance after destruction. Setting this to "async" will delay
the clearing for approx 50ms.
Defaults to:
true
Available since: 6.2.0
Setting this property to true will result in setting the object's
prototype to null after the destruction sequence is fully completed.
After that, most attempts at calling methods on the object instance
will result in "method not defined" exception. This can be very helpful
with tracking down otherwise hard to find bugs like runaway Ajax requests,
timed functions not cleared on destruction, etc.
Note that this option can only work in browsers that support Object.setPrototypeOf
method, and is only available in debugging mode.
Defaults to:
false
Available since: 6.2.0
This property is set to true after the destroy method is called.
Defaults to:
false
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
This method applies a versioned, deprecation declaration to this class. This
is typically called by the deprecated config.
deprecations : Object
Aligns the element with another element relative to the specified anchor points. If the other element is the document it aligns it to the viewport. The position parameter is optional, and can be specified in any one of the following formats:
t/r/b/l) followed by a percentage along that side. This describes a
point to align with a similar point in the target. So 't0-b0' would be
the same as 'tl-bl', 'l0-r50' would place the top left corner of this item
halfway down the right edge of the target item. This allows more flexibility
and also describes which two edges are considered adjacent when positioning a tip pointer.In addition to the anchor points, the position parameter also supports the "?" character. If "?" is passed at the end of the position string, the element will attempt to align as specified, but the position will be adjusted to constrain to the viewport if necessary. Note that the element being aligned might be swapped to align to a different position than that specified in order to enforce the viewport constraints. Following are all of the supported anchor positions:
Value Description
----- -----------------------------
tl The top left corner
t The center of the top edge
tr The top right corner
l The center of the left edge
c The center
r The center of the right edge
bl The bottom left corner
b The center of the bottom edge
br The bottom right corner
Example Usage:
// align el to other-el using the default positioning
// ("tl-bl", non-constrained)
el.alignTo("other-el");
// align the top left corner of el with the top right corner of other-el
// (constrained to viewport)
el.alignTo("other-el", "tl-tr?");
// align the bottom right corner of el with the center left edge of other-el
el.alignTo("other-el", "br-l?");
// align the center of el with the bottom left corner of other-el and
// adjust the x position by -6 pixels (and the y position by 0)
el.alignTo("other-el", "c-bl", [-6, 0]);
// align the 25% point on the bottom edge of this el
// with the 75% point on the top edge of other-el.
el.alignTo("other-el", 'b25-c75');
element : Ext.util.Positionable/HTMLElement/String
The Positionable, HTMLElement, or id of the element to align to.
position : String (optional)
The position to align to
Defaults to: "tl-bl?"
offsets : Number[] (optional)
Offset the positioning by [x, y] Element animation config object
this
anchorToEl : Ext.util.Positionable/HTMLElement/String
The Positionable, HTMLElement, or id of the element to align to.
alignment : String (optional)
The position to align to
Defaults to: "tl-bl?"
offsets : Number[] (optional)
Offset the positioning by [x, y]
animate : Boolean/Object (optional)
true for the default animation or a standard Element animation config object
this
Anchors an element to another element and realigns it when the window is resized.
anchorToEl : Ext.util.Positionable/HTMLElement/String
The Positionable, HTMLElement, or id of the element to align to.
alignment : String (optional)
The position to align to
Defaults to: "tl-bl?"
offsets : Number[] (optional)
Offset the positioning by [x, y]
animate : Boolean/Object (optional)
true for the default animation or a standard Element animation config object
monitorScroll : Boolean/Number (optional)
True to monitor body scroll and reposition. If this parameter is a number, it is used as the buffer delay in milliseconds.
Defaults to: 50
callback : Function (optional)
The function to call after the animation finishes
this
Calculates x,y coordinates specified by the anchor position on the element, adding extraX and extraY values.
anchor : String (optional)
The specified anchor position. See alignTo for details on supported anchor positions.
Defaults to: 'tl'
extraX : Number (optional)
value to be added to the x coordinate
extraY : Number (optional)
value to be added to the y coordinate
size : Object (optional)
An object containing the size to use for calculating anchor position {width: (target width), height: (target height)} (defaults to the element's current size)
[x, y] An array containing the element's x and y coordinates
Calculates the new [x,y] position to move this Positionable into a constrain region.
By default, this Positionable is constrained to be within the container it was added to, or the element it was rendered to.
Priority is given to constraining the top and left within the constraint.
An alternative constraint may be passed.
constrainTo : String/HTMLElement/Ext.dom.Element/Ext.util.Region (optional)
The Element or Ext.util.Region into which this Component is to be constrained. Defaults to the element into which this Positionable was rendered, or this Component's {@link Ext.Component#constrainTo.
proposedPosition : Number[] (optional)
A proposed [X, Y] position to test for validity
and to coerce into constraints instead of using this Positionable's current position.
local : Boolean (optional)
The proposedPosition is local (relative to floatParent if a floating Component)
proposedSize : Number[] (optional)
A proposed [width, height] size to use when calculating
constraints instead of using this Positionable's current size.
If the element needs to be translated, the new [X, Y] position within
constraints if possible, giving priority to keeping the top and left edge in the constrain region.
Otherwise, false.
Call the original method that was previously overridden with Ext.Base#override
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.callOverridden();
alert("Meeeeoooowwww");
}
});
var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
// alerts "I'm a cat!"
// alerts "Meeeeoooowwww"
args : Array/Arguments
The arguments, either an array or the arguments object
from the current method, for example: this.callOverridden(arguments)
Returns the result of calling the overridden method
Deprecated since version 4.1.0
Use method-callParent instead.
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 and private methods.
Ext.define('My.Derived2', {
extend: 'My.Base',
// privates: {
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',
// privates: {
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 method-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 method-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
Clips this Component/Element to fit within the passed element's or component's view area
clippingEl : Ext.Component/Ext.dom.Element/Ext.util.Region
The Component or element or Region which should clip this element even if this element is outside the bounds of that region.
sides : Number
The sides to clip 1=top, 2=right, 4=bottom, 8=left.
This is to support components being clipped to their logical owner, such as a grid row editor when the row being edited scrolls out of sight. The editor should be clipped at the edge of the scrolling element.
This function converts a legacy alignment string such as 't-b' into a pair of edge, offset objects which describe the alignment points of the two regions.
So tl-br becomes {myEdge:'t', offset:0}, {otherEdge:'b', offset:100}
This not only allows more flexibility in the alignment possibilities, but it also resolves any ambiguity as to chich two edges are desired to be adjacent if an anchor pointer is required.
posSpec : Object
This method is called to cleanup an object and its resources. After calling this method, the object should not be used any further in any way, including access to its methods and properties.
To prevent potential memory leaks, all object references will be nulled
at the end of destruction sequence, unless clearPropertiesOnDestroy
is set to false.
Destroys member properties by name.
If a property name is the name of a config, the getter is not invoked, so if the config has not been initialized, nothing will be done.
The property will be destroyed, and the corrected name (if the property is a config
and config names are prefixed) will set to null in this object's dictionary.
args : String...
One or more names of the properties to destroy and remove from the object.
Gets the x,y coordinates to align this element with another element. See alignTo for more info on the supported position values.
alignToEl : Ext.util.Positionable/HTMLElement/String
The Positionable, HTMLElement, or id of the element to align to.
position : String (optional)
The position to align to
Defaults to: "tl-bl?"
offsets : Number[] (optional)
Offset the positioning by [x, y]
[x, y]
Gets the x,y coordinates of an element specified by the anchor position on the element.
el : Ext.dom.Element
The element
anchor : String (optional)
The specified anchor position. See alignTo for details on supported anchor positions.
Defaults to: 'tl'
local : Boolean (optional)
True to get the local (element top/left-relative) anchor position instead of page coordinates
size : Object (optional)
An object containing the size to use for calculating anchor position {width: (target width), height: (target height)} (defaults to the element's current size)
[x, y] An array containing the element's x and y coordinates
Gets the x,y coordinates specified by the anchor position on the element.
anchor : String (optional)
The specified anchor position. See alignTo for details on supported anchor positions.
Defaults to: 'tl'
local : Boolean (optional)
True to get the local (element top/left-relative) anchor position instead of page coordinates
size : Object (optional)
An object containing the size to use for calculating anchor position {width: (target width), height: (target height)} (defaults to the element's current size)
[x, y] An array containing the element's x and y coordinates
Returns the size of the element's borders and padding.
an object with the following numeric properties
Return an object defining the area of this Element which can be passed to setBox to set another Element's size/location to match this element.
contentBox : Boolean (optional)
If true a box for the content of the element is returned.
local : Boolean (optional)
If true the element's left and top relative to its
offsetParent are returned instead of page x/y.
An object in the format
Returns a region object that defines the client area of this element.
That is, the area within any scrollbars.
A Region containing "top, left, bottom, right" properties.
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
ifInitialized : Boolean (optional)
true to only return the initialized property value,
not the raw config value, and not to trigger initialization. Returns undefined if the
property has not yet been initialized.
Defaults to: false
The config property value.
Returns the content region of this element for purposes of constraining or clipping floating children. That is the region within the borders and scrollbars, but not within the padding.
A Region containing "top, left, bottom, right" properties.
Returns the [X, Y] vector by which this Positionable's element must be translated to make a best
attempt to constrain within the passed constraint. Returns false if the element
does not need to be moved.
Priority is given to constraining the top and left within the constraint.
The constraint may either be an existing element into which the element is to be constrained, or a Ext.util.Region into which this element is to be constrained.
By default, any extra shadow around the element is not included in the constrain calculations - the edges
of the element are used as the element bounds. To constrain the shadow within the constrain region, set the
constrainShadow property on this element to true.
constrainTo : Ext.util.Positionable/HTMLElement/String/Ext.util.Region (optional)
The Positionable, HTMLElement, element id, or Region into which the element is to be constrained.
proposedPosition : Number[] (optional)
A proposed [X, Y] position to test for validity
and to produce a vector for instead of using the element's current position
proposedSize : Number[] (optional)
A proposed [width, height] size to constrain
instead of using the element's current size
If the element needs to be translated, an [X, Y]
vector by which this element must be translated. Otherwise, false.
Returns the initial configuration passed to the constructor when instantiating this class.
Given this example Ext.button.Button definition and instance:
Ext.define('MyApp.view.Button', {
extend: 'Ext.button.Button',
xtype: 'mybutton',
scale: 'large',
enableToggle: true
});
var btn = Ext.create({
xtype: 'mybutton',
renderTo: Ext.getBody(),
text: 'Test Button'
});
Calling btn.getInitialConfig() would return an object including the config
options passed to the create method:
xtype: 'mybutton',
renderTo: // The document body itself
text: 'Test Button'
Calling btn.getInitialConfig('text')returns 'Test Button'.
name : String (optional)
Name of the config option to return.
The full config object or a single config value
when name parameter specified.
Returns the x coordinate of this element reletive to its offsetParent.
The local x coordinate
Returns the x and y coordinates of this element relative to its offsetParent.
The local XY position of the element
Returns the y coordinate of this element reletive to its offsetParent.
The local y coordinate
Returns the offsets of this element from the passed element. The element must both be part of the DOM tree and not have display:none to have page coordinates.
offsetsTo : Ext.util.Positionable/HTMLElement/String
The Positionable, HTMLElement, or element id to get get the offsets from.
The XY page offsets (e.g. [100, -200])
Returns a region object that defines the area of this element.
contentBox : Boolean (optional)
If true a box for the content of the element is returned.
local : Boolean (optional)
If true the element's left and top relative to its
offsetParent are returned instead of page x/y.
A Region containing "top, left, bottom, right" properties.
Returns the content region of this element. That is the region within the borders and padding.
A Region containing "top, left, bottom, right" member data.
Gets the current X position of the DOM element based on page coordinates.
The X position of the element
Gets the current position of the DOM element based on page coordinates.
The XY position of the element
Gets the current Y position of the DOM element based on page coordinates.
The Y position of the element
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
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.
Move the element relative to its current position.
direction : String
Possible values are:
"l" (or "left")"r" (or "right")"t" (or "top", or "up")"b" (or "bottom", or "down")distance : Number
How far to move the element in pixels
Move the element relative to its current position.
direction : String
Possible values are:
"l" (or "left")"r" (or "right")"t" (or "top", or "up")"b" (or "bottom", or "down")distance : Number
How far to move the element in pixels
animate : Boolean/Object (optional)
true for the default animation or a standard Element animation config object
Remove any anchor to this element. See anchorTo.
this
Converts local coordinates into page-level coordinates
xy : Number[]
The local x and y coordinates
The translated coordinates
Sets the element's box.
box : Object
The box to fill {x, y, width, height}
this
Sets the element's box. If animate is true then x, y, width, and height will be animated concurrently.
box : Object
The box to fill {x, y, width, height}
animate : Boolean/Object (optional)
true for the default animation or a standard Element animation config object
this
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 the local x coordinate of this element using CSS style. When used on an absolute positioned element this method is symmetrical with getLocalX, but may not be symmetrical when used on a relatively positioned element.
x : Number
The x coordinate. A value of null sets the left style to 'auto'.
this
Sets the local x and y coordinates of this element using CSS style. When used on an absolute positioned element this method is symmetrical with getLocalXY, but may not be symmetrical when used on a relatively positioned element.
x : Number/Array
The x coordinate or an array containing [x, y]. A value of
null sets the left style to 'auto'
y : Number (optional)
The y coordinate, required if x is not an array. A value of
null sets the top style to 'auto'
this
Sets the local y coordinate of this element using CSS style. When used on an absolute positioned element this method is symmetrical with getLocalY, but may not be symmetrical when used on a relatively positioned element.
y : Number
The y coordinate. A value of null sets the top style to 'auto'.
this
Sets the X position of the DOM element based on page coordinates.
x : Number
The X position
this
Sets the X position of the DOM element based on page coordinates.
x : Number
The X position
animate : Boolean/Object (optional)
True for the default animation, or a standard Element animation config object
this
Sets the position of the DOM element in page coordinates.
pos : Number[]
Contains X & Y [x, y] values for new position (coordinates are page-based)
this
Sets the position of the DOM element in page coordinates.
pos : Number[]
Contains X & Y [x, y] values for new position (coordinates are page-based)
animate : Boolean/Object (optional)
True for the default animation, or a standard Element animation config object
this
Sets the Y position of the DOM element based on page coordinates.
y : Number
The Y position
this
Sets the Y position of the DOM element based on page coordinates.
y : Number
The Y position
animate : Boolean/Object (optional)
True for the default animation, or a standard Element animation config object
this
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
Translates the passed page coordinates into left/top css values for the element
x : Number/Array
The page x or an array containing [x, y]
y : Number (optional)
The page y, required if x is not an array
An object with left and top properties. e.g. {left: (value), top: (value)}
Translates the passed page coordinates into x and y css values for the element
x : Number/Array
The page x or an array containing [x, y]
y : Number (optional)
The page y, required if x is not an array
An object with x and y properties. e.g. {x: (value), y: (value)}
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 : Ext.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 Ext.Base#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
Ext JS | Terms of Use