Ext.data.JsonP.Ext_util_KeyMap({"alternateClassNames":["Ext.KeyMap"],"aliases":{},"enum":null,"parentMixins":[],"tagname":"class","subclasses":[],"extends":"Ext.Base","uses":[],"html":"
Alternate names
Ext.KeyMap
Hierarchy
Ext.Base
Ext.util.KeyMap
Files
KeyMap.js

Handles mapping key events to handling functions for an element or a Component. One KeyMap can be used for multiple\nactions.

\n\n

A KeyMap must be configured with a target as an event source which may be an Element or a Component.

\n\n

If the target is an element, then the keydown event will trigger the invocation of bindings.

\n\n

It is possible to configure the KeyMap with a custom eventName to listen for. This may be useful when the\ntarget is a Component.

\n\n

The KeyMap's event handling requires that the first parameter passed is a key event. So if the Component's event\nsignature is different, specify a processEvent configuration which accepts the event's parameters and\nreturns a key event.

\n\n

Functions specified in bindings are called with this signature : (String key, Ext.EventObject e) (if the\nmatch is a multi-key combination the callback will still be called only once). A KeyMap can also handle a string\nrepresentation of keys. By default KeyMap starts enabled.

\n\n

Usage:

\n\n
// map one key by key code\nvar map = new Ext.util.KeyMap({\n    target: \"my-element\",\n    key: 13, // or Ext.EventObject.ENTER\n    fn: myHandler,\n    scope: myObject\n});\n\n// map multiple keys to one action by string\nvar map = new Ext.util.KeyMap({\n    target: \"my-element\",\n    key: \"a\\r\\n\\t\",\n    fn: myHandler,\n    scope: myObject\n});\n\n// map multiple keys to multiple actions by strings and array of codes\nvar map = new Ext.util.KeyMap({\n    target: \"my-element\",\n    binding: [{\n        key: [10,13],\n        fn: function(){ alert(\"Return was pressed\"); }\n    }, {\n        key: \"abc\",\n        fn: function(){ alert('a, b or c was pressed'); }\n    }, {\n        key: \"\\t\",\n        ctrl:true,\n        shift:true,\n        fn: function(){ alert('Control + shift + tab was pressed.'); }\n    }]\n});\n
\n\n

Since 4.1.0, KeyMaps can bind to Components and process key-based events fired by Components.

\n\n

To bind to a Component, use the single parameter form of constructor and include the Component event name\nto listen for, and a processEvent implementation which returns the key event for further processing by\nthe KeyMap:

\n\n
var map = new Ext.util.KeyMap({\n    target: myGridView,\n    eventName: 'itemkeydown',\n    processEvent: function(view, record, node, index, event) {\n\n        // Load the event with the extra information needed by the mappings\n        event.view = view;\n        event.store = view.getStore();\n        event.record = record;\n        event.index = index;\n        return event;\n    },\n    binding: {\n        key: Ext.EventObject.DELETE,\n        fn: function(keyCode, e) {\n            e.store.remove(e.record);\n\n            // Attempt to select the record that's now in its place\n            e.view.getSelectionModel().select(e.index);\n            e.view.el.focus();\n        }\n    }\n});\n
\n
Defined By

Config options

Ext.util.KeyMap
view source
: Object/Object[][]
Either a single object describing a handling function for s specified key (or set of keys), or\nan array of such objects. ...

Either a single object describing a handling function for s specified key (or set of keys), or\nan array of such objects.

\n
  • key : String/String[]

    A single keycode or an array of keycodes to handle

    \n
  • shift : Boolean

    True to handle key only when shift is pressed, False to handle the\n key only when shift is not pressed (defaults to undefined)

    \n
  • ctrl : Boolean

    True to handle key only when ctrl is pressed, False to handle the\n key only when ctrl is not pressed (defaults to undefined)

    \n
  • alt : Boolean

    True to handle key only when alt is pressed, False to handle the key\n only when alt is not pressed (defaults to undefined)

    \n
  • handler : Function

    The function to call when KeyMap finds the expected key combination

    \n
  • fn : Function

    Alias of handler (for backwards-compatibility)

    \n
  • scope : Object

    The scope of the callback function

    \n
  • defaultEventAction : String

    A default action to apply to the event. Possible values\n are: stopEvent, stopPropagation, preventDefault. If no value is set no action is performed.

    \n
Ext.util.KeyMap
view source
: String
The event to listen for to pick up key events. ...

The event to listen for to pick up key events.

\n

Defaults to: 'keydown'

Ext.util.KeyMap
view source
: Boolean
Configure this as true if there are any input fields within the target, and this KeyNav\nshould not process events fro...

Configure this as true if there are any input fields within the target, and this KeyNav\nshould not process events from input fields, (<input>, <textarea> and elements withcontentEditable=\"true\"`)

\n

Defaults to: false

Ext.util.KeyMap
view source
: Function
An optional event processor function which accepts the argument list provided by the\nconfigured event of the target, ...

An optional event processor function which accepts the argument list provided by the\nconfigured event of the target, and returns a keyEvent for processing by the KeyMap.

\n\n

This may be useful when the target is a Component with s complex event signature, where the event is not\nthe first parameter. Extra information from the event arguments may be injected into the event for use by the handler\nfunctions before returning it.

\n
Ext.util.KeyMap
view source
: Object
The scope (this context) in which the processEvent method is executed. ...

The scope (this context) in which the processEvent method is executed.

\n

Defaults to: this

Ext.util.KeyMap
view source
target : Ext.Component/Ext.Element/HTMLElement/String

The object on which to listen for the event specified by the eventName config option.

\n

The object on which to listen for the event specified by the eventName config option.

\n

Properties

Defined By

Instance Properties

Ext.Base
view source
: Stringprivate
...
\n

Defaults to: 'Ext.Base'

Ext.Base
view source
: Objectprivate
...
\n

Defaults to: {}

Ext.Base
view source
: Arrayprivate
...
\n

Defaults to: []

Ext.Base
view source
: Objectprivate
...
\n

Defaults to: {}

Ext.Base
view source
: Booleanprivate
...
\n

Defaults to: true

Ext.Base
view source
: Ext.Classprotected
Get the reference to the current class from which this object was instantiated. ...

Get the reference to the current class from which this object was instantiated. Unlike statics,\nthis.self is scope-dependent and it's meant to be used for dynamic inheritance. See statics\nfor a detailed comparison

\n\n
Ext.define('My.Cat', {\n    statics: {\n        speciesName: 'Cat' // My.Cat.speciesName = 'Cat'\n    },\n\n    constructor: function() {\n        alert(this.self.speciesName); // dependent on 'this'\n    },\n\n    clone: function() {\n        return new this.self();\n    }\n});\n\n\nExt.define('My.SnowLeopard', {\n    extend: 'My.Cat',\n    statics: {\n        speciesName: 'Snow Leopard'         // My.SnowLeopard.speciesName = 'Snow Leopard'\n    }\n});\n\nvar cat = new My.Cat();                     // alerts 'Cat'\nvar snowLeopard = new My.SnowLeopard();     // alerts 'Snow Leopard'\n\nvar clone = snowLeopard.clone();\nalert(Ext.getClassName(clone));             // alerts 'My.SnowLeopard'\n
\n
Defined By

Static Properties

Ext.Base
view source
: Arrayprivatestatic
...
\n

Defaults to: []

Methods

Defined By

Instance Methods

Ext.util.KeyMap
view source
new( config ) : Ext.util.KeyMap
...
\n

Parameters

Returns

Ext.util.KeyMap
view source
( binding )
Add a new binding to this KeyMap. ...

Add a new binding to this KeyMap.

\n\n

Usage:

\n\n
// Create a KeyMap\nvar map = new Ext.util.KeyMap(document, {\n    key: Ext.EventObject.ENTER,\n    fn: handleKey,\n    scope: this\n});\n\n//Add a new binding to the existing KeyMap later\nmap.addBinding({\n    key: 'abc',\n    shift: true,\n    fn: handleKey,\n    scope: this\n});\n
\n

Parameters

  • binding : Object/Object[]

    A single KeyMap config or an array of configs.\nThe following config object properties are supported:

    \n
    • key : String/Array

      A single keycode or an array of keycodes to handle.

      \n
    • shift : Boolean

      True to handle key only when shift is pressed,\nFalse to handle the keyonly when shift is not pressed (defaults to undefined).

      \n
    • ctrl : Boolean

      True to handle key only when ctrl is pressed,\nFalse to handle the key only when ctrl is not pressed (defaults to undefined).

      \n
    • alt : Boolean

      True to handle key only when alt is pressed,\nFalse to handle the key only when alt is not pressed (defaults to undefined).

      \n
    • handler : Function

      The function to call when KeyMap finds the\nexpected key combination.

      \n
    • fn : Function

      Alias of handler (for backwards-compatibility).

      \n
    • scope : Object

      The scope of the callback function.

      \n
    • defaultEventAction : String

      A default action to apply to the event.\nPossible values are: stopEvent, stopPropagation, preventDefault. If no value is\nset no action is performed..

      \n
Ext.Base
view source
( args ) : Objectdeprecatedprotected
Call the original method that was previously overridden with override\n\nExt.define('My.Cat', {\n constructor: functi...

Call the original method that was previously overridden with override

\n\n
Ext.define('My.Cat', {\n    constructor: function() {\n        alert(\"I'm a cat!\");\n    }\n});\n\nMy.Cat.override({\n    constructor: function() {\n        alert(\"I'm going to be a cat!\");\n\n        this.callOverridden();\n\n        alert(\"Meeeeoooowwww\");\n    }\n});\n\nvar kitty = new My.Cat(); // alerts \"I'm going to be a cat!\"\n                          // alerts \"I'm a cat!\"\n                          // alerts \"Meeeeoooowwww\"\n
\n
\n

This method has been deprecated

\n

as of 4.1. Use callParent instead.

\n\n
\n

Parameters

  • args : Array/Arguments

    The arguments, either an array or the arguments object\nfrom the current method, for example: this.callOverridden(arguments)

    \n

Returns

  • Object

    Returns the result of calling the overridden method

    \n
Ext.Base
view source
( args ) : Objectprotected
Call the \"parent\" method of the current method. ...

Call the \"parent\" method of the current method. That is the method previously\noverridden by derivation or by an override (see Ext.define).

\n\n
 Ext.define('My.Base', {\n     constructor: function (x) {\n         this.x = x;\n     },\n\n     statics: {\n         method: function (x) {\n             return x;\n         }\n     }\n });\n\n Ext.define('My.Derived', {\n     extend: 'My.Base',\n\n     constructor: function () {\n         this.callParent([21]);\n     }\n });\n\n var obj = new My.Derived();\n\n alert(obj.x);  // alerts 21\n
\n\n

This can be used with an override as follows:

\n\n
 Ext.define('My.DerivedOverride', {\n     override: 'My.Derived',\n\n     constructor: function (x) {\n         this.callParent([x*2]); // calls original My.Derived constructor\n     }\n });\n\n var obj = new My.Derived();\n\n alert(obj.x);  // now alerts 42\n
\n\n

This also works with static methods.

\n\n
 Ext.define('My.Derived2', {\n     extend: 'My.Base',\n\n     statics: {\n         method: function (x) {\n             return this.callParent([x*2]); // calls My.Base.method\n         }\n     }\n });\n\n alert(My.Base.method(10);     // alerts 10\n alert(My.Derived2.method(10); // alerts 20\n
\n\n

Lastly, it also works with overridden static methods.

\n\n
 Ext.define('My.Derived2Override', {\n     override: 'My.Derived2',\n\n     statics: {\n         method: function (x) {\n             return this.callParent([x*2]); // calls My.Derived2.method\n         }\n     }\n });\n\n alert(My.Derived2.method(10); // now alerts 40\n
\n\n

To override a method and replace it and also call the superclass method, use\ncallSuper. This is often done to patch a method to fix a bug.

\n

Parameters

  • args : Array/Arguments

    The arguments, either an array or the arguments object\nfrom the current method, for example: this.callParent(arguments)

    \n

Returns

  • Object

    Returns the result of calling the parent method

    \n
Ext.Base
view source
( args ) : Objectprotected
This method is used by an override to call the superclass method but bypass any\noverridden method. ...

This method is used by an override to call the superclass method but bypass any\noverridden method. This is often done to \"patch\" a method that contains a bug\nbut for whatever reason cannot be fixed directly.

\n\n

Consider:

\n\n
 Ext.define('Ext.some.Class', {\n     method: function () {\n         console.log('Good');\n     }\n });\n\n Ext.define('Ext.some.DerivedClass', {\n     method: function () {\n         console.log('Bad');\n\n         // ... logic but with a bug ...\n\n         this.callParent();\n     }\n });\n
\n\n

To patch the bug in DerivedClass.method, the typical solution is to create an\noverride:

\n\n
 Ext.define('App.paches.DerivedClass', {\n     override: 'Ext.some.DerivedClass',\n\n     method: function () {\n         console.log('Fixed');\n\n         // ... logic but with bug fixed ...\n\n         this.callSuper();\n     }\n });\n
\n\n

The patch method cannot use callParent to call the superclass method since\nthat would call the overridden method containing the bug. In other words, the\nabove patch would only produce \"Fixed\" then \"Good\" in the console log, whereas,\nusing callParent would produce \"Fixed\" then \"Bad\" then \"Good\".

\n

Parameters

  • args : Array/Arguments

    The arguments, either an array or the arguments object\nfrom the current method, for example: this.callSuper(arguments)

    \n

Returns

  • Object

    Returns the result of calling the superclass method

    \n
Ext.util.KeyMap
view source
( binding, event ) : Booleanprivate
Check if the modifiers on the event match those on the binding ...

Check if the modifiers on the event match those on the binding

\n

Parameters

Returns

  • Boolean

    True if the event matches the binding

    \n
Ext.Base
view source
( )private
...
\n
Ext.util.KeyMap
view source
( removeTarget )
Destroys the KeyMap instance and removes all handlers. ...

Destroys the KeyMap instance and removes all handlers.

\n

Parameters

Overrides: Ext.Base.destroy

Ext.util.KeyMap
view source
( )
Disable this KeyMap ...

Disable this KeyMap

\n
Ext.util.KeyMap
view source
( )
Enables this KeyMap ...

Enables this KeyMap

\n
Ext.Base
view source
( name )private
...
\n

Parameters

Ext.Base
view source
( [name] ) : Object/Mixed
Returns the initial configuration passed to constructor when instantiating\nthis class. ...

Returns the initial configuration passed to constructor when instantiating\nthis class.

\n

Parameters

  • name : String (optional)

    Name of the config option to return.

    \n

Returns

  • Object/Mixed

    The full config object or a single config value\nwhen name parameter specified.

    \n
Ext.util.KeyMap
view source
( event )private
Process the event from the target. ...

Process the event from the target.

\n

Parameters

Ext.Base
view source
( config )private
...
\n

Parameters

Ext.Base
view source
( config ) : Ext.Basechainableprotected
Initialize configuration for this class. ...

Initialize configuration for this class. a typical example:

\n\n
Ext.define('My.awesome.Class', {\n    // The default config\n    config: {\n        name: 'Awesome',\n        isAwesome: true\n    },\n\n    constructor: function(config) {\n        this.initConfig(config);\n    }\n});\n\nvar awesome = new My.awesome.Class({\n    name: 'Super Awesome'\n});\n\nalert(awesome.getName()); // 'Super Awesome'\n
\n

Parameters

Returns

Ext.util.KeyMap
view source
( ) : Boolean
Returns true if this KeyMap is enabled ...

Returns true if this KeyMap is enabled

\n

Returns

Ext.util.KeyMap
view source
( el, binding, [eventName] )private
Old constructor signature ...

Old constructor signature

\n

Parameters

Ext.util.KeyMap
view source
( key, fn, [scope] )
Shorthand for adding a single key listener. ...

Shorthand for adding a single key listener.

\n

Parameters

  • key : Number/Number[]/Object

    Either the numeric key code, array of key codes or an object with the\nfollowing options: {key: (number or array), shift: (true/false), ctrl: (true/false), alt: (true/false)}

    \n
  • fn : Function

    The function to call

    \n
  • scope : Object (optional)

    The scope (this reference) in which the function is executed.\nDefaults to the browser window.

    \n
Ext.Base
view source
( names, callback, scope )private
...
\n

Parameters

Ext.util.KeyMap
view source
( binding, event )private
Process a particular binding and fire the handler if necessary. ...

Process a particular binding and fire the handler if necessary.

\n

Parameters

Ext.util.KeyMap
view source
( keyCode )private
...
\n

Parameters

Ext.util.KeyMap
view source
( binding )
Remove a binding from this KeyMap. ...

Remove a binding from this KeyMap.

\n

Parameters

Ext.Base
view source
( config, applyIfNotSet ) : Ext.Basechainableprivate
...
\n

Parameters

Returns

Ext.util.KeyMap
view source
( disabled )
Convenience function for setting disabled/enabled by boolean. ...

Convenience function for setting disabled/enabled by boolean.

\n

Parameters

Ext.Base
view source
( ) : Ext.Classprotected
Get the reference to the class from which this object was instantiated. ...

Get the reference to the class from which this object was instantiated. Note that unlike self,\nthis.statics() is scope-independent and it always returns the class from which it was called, regardless of what\nthis points to during run-time

\n\n
Ext.define('My.Cat', {\n    statics: {\n        totalCreated: 0,\n        speciesName: 'Cat' // My.Cat.speciesName = 'Cat'\n    },\n\n    constructor: function() {\n        var statics = this.statics();\n\n        alert(statics.speciesName);     // always equals to 'Cat' no matter what 'this' refers to\n                                        // equivalent to: My.Cat.speciesName\n\n        alert(this.self.speciesName);   // dependent on 'this'\n\n        statics.totalCreated++;\n    },\n\n    clone: function() {\n        var cloned = new this.self;                      // dependent on 'this'\n\n        cloned.groupName = this.statics().speciesName;   // equivalent to: My.Cat.speciesName\n\n        return cloned;\n    }\n});\n\n\nExt.define('My.SnowLeopard', {\n    extend: 'My.Cat',\n\n    statics: {\n        speciesName: 'Snow Leopard'     // My.SnowLeopard.speciesName = 'Snow Leopard'\n    },\n\n    constructor: function() {\n        this.callParent();\n    }\n});\n\nvar cat = new My.Cat();                 // alerts 'Cat', then alerts 'Cat'\n\nvar snowLeopard = new My.SnowLeopard(); // alerts 'Cat', then alerts 'Snow Leopard'\n\nvar clone = snowLeopard.clone();\nalert(Ext.getClassName(clone));         // alerts 'My.SnowLeopard'\nalert(clone.groupName);                 // alerts 'Cat'\n\nalert(My.Cat.totalCreated);             // alerts 3\n
\n

Returns

Ext.util.KeyMap
view source
( key, fn, [scope] )
Shorthand for removing a single key listener. ...

Shorthand for removing a single key listener.

\n

Parameters

  • key : Number/Number[]/Object

    Either the numeric key code, array of key codes or an object with the\nfollowing options: {key: (number or array), shift: (true/false), ctrl: (true/false), alt: (true/false)}

    \n
  • fn : Function

    The function to call

    \n
  • scope : Object (optional)

    The scope (this reference) in which the function is executed.\nDefaults to the browser window.

    \n
Defined By

Static Methods

Ext.Base
view source
( config )privatestatic
...
\n

Parameters

Ext.Base
view source
( members )chainableprivatestatic
...
\n

Parameters

Ext.Base
view source
( name, member )chainableprivatestatic
...
\n

Parameters

Ext.Base
view source
( members )chainablestatic
Add methods / properties to the prototype of this class. ...

Add methods / properties to the prototype of this class.

\n\n
Ext.define('My.awesome.Cat', {\n    constructor: function() {\n        ...\n    }\n});\n\n My.awesome.Cat.addMembers({\n     meow: function() {\n        alert('Meowww...');\n     }\n });\n\n var kitty = new My.awesome.Cat;\n kitty.meow();\n
\n

Parameters

Ext.Base
view source
( members ) : Ext.Basechainablestatic
Add / override static properties of this class. ...

Add / override static properties of this class.

\n\n
Ext.define('My.cool.Class', {\n    ...\n});\n\nMy.cool.Class.addStatics({\n    someProperty: 'someValue',      // My.cool.Class.someProperty = 'someValue'\n    method1: function() { ... },    // My.cool.Class.method1 = function() { ... };\n    method2: function() { ... }     // My.cool.Class.method2 = function() { ... };\n});\n
\n

Parameters

Returns

Ext.Base
view source
( xtype )chainableprivatestatic
...
\n

Parameters

Ext.Base
view source
( fromClass, members ) : Ext.Basechainableprivatestatic
Borrow another class' members to the prototype of this class. ...

Borrow another class' members to the prototype of this class.

\n\n
Ext.define('Bank', {\n    money: '$$$',\n    printMoney: function() {\n        alert('$$$$$$$');\n    }\n});\n\nExt.define('Thief', {\n    ...\n});\n\nThief.borrow(Bank, ['money', 'printMoney']);\n\nvar steve = new Thief();\n\nalert(steve.money); // alerts '$$$'\nsteve.printMoney(); // alerts '$$$$$$$'\n
\n

Parameters

  • fromClass : Ext.Base

    The class to borrow members from

    \n
  • members : Array/String

    The names of the members to borrow

    \n

Returns

Ext.Base
view source
( ) : Objectstatic
Create a new instance of this Class. ...

Create a new instance of this Class.

\n\n
Ext.define('My.cool.Class', {\n    ...\n});\n\nMy.cool.Class.create({\n    someConfig: true\n});\n
\n\n

All parameters are passed to the constructor of the class.

\n

Returns

Ext.Base
view source
( alias, origin )static
Create aliases for existing prototype methods. ...

Create aliases for existing prototype methods. Example:

\n\n
Ext.define('My.cool.Class', {\n    method1: function() { ... },\n    method2: function() { ... }\n});\n\nvar test = new My.cool.Class();\n\nMy.cool.Class.createAlias({\n    method3: 'method1',\n    method4: 'method2'\n});\n\ntest.method3(); // test.method1()\n\nMy.cool.Class.createAlias('method5', 'method3');\n\ntest.method5(); // test.method3() -> test.method1()\n
\n

Parameters

Ext.Base
view source
( config )privatestatic
...
\n

Parameters

Ext.Base
view source
( ) : Stringstatic
Get the current class' name in string format. ...

Get the current class' name in string format.

\n\n
Ext.define('My.cool.Class', {\n    constructor: function() {\n        alert(this.self.getName()); // alerts 'My.cool.Class'\n    }\n});\n\nMy.cool.Class.getName(); // 'My.cool.Class'\n
\n

Returns

Ext.Base
view source
( )deprecatedstatic
Adds members to class. ...

Adds members to class.

\n
\n

This method has been deprecated since 4.1

\n

Use addMembers instead.

\n\n
\n
Ext.Base
view source
( name, mixinClass )privatestatic
Used internally by the mixins pre-processor ...

Used internally by the mixins pre-processor

\n

Parameters

Ext.Base
view source
( fn, scope )chainableprivatestatic
...
\n

Parameters

Ext.Base
view source
( members ) : Ext.Basechainabledeprecatedstatic
Override members of this class. ...

Override members of this class. Overridden methods can be invoked via\ncallParent.

\n\n
Ext.define('My.Cat', {\n    constructor: function() {\n        alert(\"I'm a cat!\");\n    }\n});\n\nMy.Cat.override({\n    constructor: function() {\n        alert(\"I'm going to be a cat!\");\n\n        this.callParent(arguments);\n\n        alert(\"Meeeeoooowwww\");\n    }\n});\n\nvar kitty = new My.Cat(); // alerts \"I'm going to be a cat!\"\n                          // alerts \"I'm a cat!\"\n                          // alerts \"Meeeeoooowwww\"\n
\n\n

As of 4.1, direct use of this method is deprecated. Use Ext.define\ninstead:

\n\n
Ext.define('My.CatOverride', {\n    override: 'My.Cat',\n    constructor: function() {\n        alert(\"I'm going to be a cat!\");\n\n        this.callParent(arguments);\n\n        alert(\"Meeeeoooowwww\");\n    }\n});\n
\n\n

The above accomplishes the same result but can be managed by the Ext.Loader\nwhich can properly order the override and its target class and the build process\ncan determine whether the override is needed based on the required state of the\ntarget class (My.Cat).

\n
\n

This method has been deprecated since 4.1.0

\n

Use Ext.define instead

\n\n
\n

Parameters

  • members : Object

    The properties to add to this class. This should be\nspecified as an object literal containing one or more properties.

    \n

Returns

Ext.Base
view source
( )privatestatic
...
\n
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