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IndexChangedEvent

Package | mx.events
Class | public class IndexChangedEvent
Inheritance | IndexChangedEvent flash.events.Event

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

The IndexChangedEvent class represents events that are dispatched when an index changes. This event can indicate that the index value of a child of a container changed, the displayed child of a navigator container such as an Accordion or ViewStack changed, or the order of column headers in a DataGrid control changed.

See also

mx.core.Container

Public Properties

| Property | Defined By
--- | --- | ---
|  | newIndex : Number The zero-based index after the change. | IndexChangedEvent
|  | oldIndex : Number The zero-based index before the change. | IndexChangedEvent
|  | relatedObject : DisplayObject The child object whose index changed, or the object associated with the new index. | IndexChangedEvent
|  | triggerEvent : Event The event that triggered this event. | IndexChangedEvent

Public Methods

| Method | Defined By
--- | --- | ---
|  | IndexChangedEvent(type:String, bubbles:Boolean = false, cancelable:Boolean = false, relatedObject:DisplayObject = null, oldIndex:Number = -1, newIndex:Number = -1, triggerEvent:Event = null) Constructor. | IndexChangedEvent

Public Constants

| Constant | Defined By
--- | --- | ---
|  | CHANGE : String = change [static] The IndexChangedEvent.CHANGE constant defines the value of the type property of the event object for a change event, which indicates that an index has changed, such as when and Accordion control changes the displayed panel or a ViewStack changes views. | IndexChangedEvent
|  | CHILD_INDEX_CHANGE : String = childIndexChange [static] The IndexChangedEvent.CHILD_INDEX_CHANGE constant defines the value of the type property of the event object for a childIndexChange event, which indicates that a component's index among a container's children has changed. | IndexChangedEvent
|  | HEADER_SHIFT : String = headerShift [static] The IndexChangedEvent.HEADER_SHIFT constant defines the value of the type property of the event object for a headerShift event, which indicates that a header has changed its index, as when a user drags a DataGrid column to a new position. | IndexChangedEvent

Property Detail

newIndex | property

`public var newIndex:Number`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

The zero-based index after the change. For `change` events it is the index of the current child. For `childIndexChange` events, it is the new index of the child. For `headerShift` events, it is the new index of the header.

oldIndex | property |

`public var oldIndex:Number`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

The zero-based index before the change. For `change` events it is the index of the previous child. For `childIndexChange` events, it is the previous index of the child. For `headerShift` events, it is the previous index of the header.

relatedObject | property |

`public var relatedObject:DisplayObject`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

The child object whose index changed, or the object associated with the new index. This property is not set for header changes.

triggerEvent | property |

`public var triggerEvent:Event`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

The event that triggered this event. Indicates whether this event was caused by a mouse or keyboard interaction. The value is `null` when a container dispatches a `childIndexChanged` event.

Constructor Detail

IndexChangedEvent | () | Constructor

`public function IndexChangedEvent(type:String, bubbles:Boolean = false, cancelable:Boolean = false, relatedObject:DisplayObject = null, oldIndex:Number = -1, newIndex:Number = -1, triggerEvent:Event = null)`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

Constructor. Normally called by a Flex control and not used in application code.

Parameters

| `type:String` — The event type; indicates the action that caused the event.
| `bubbles:Boolean` (default = `false`)`` — Specifies whether the event can bubble up the display list hierarchy.
| `cancelable:Boolean` (default = `false`)`` — Specifies whether the behavior associated with the event can be prevented.
| `relatedObject:DisplayObject` (default = `null`)`` — The child object associated with the index change.
| `oldIndex:Number` (default = `-1`)`` — The zero-based index before the change.
| `newIndex:Number` (default = `-1`)`` — The zero-based index after the change.
| `triggerEvent:Event` (default = `null`)`` — The event that triggered this event.

Constant Detail

CHANGE | Constant

`public static const CHANGE:String = change`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

The IndexChangedEvent.CHANGE constant defines the value of the `type` property of the event object for a `change` event, which indicates that an index has changed, such as when and Accordion control changes the displayed panel or a ViewStack changes views.

The properties of the event object have the following values:

Property | Value
--- | ---
`bubbles` | false
`cancelable` | false
`currentTarget` | The Object that defines the event listener that handles the event. For example, if you use `myButton.addEventListener()` to register an event listener, myButton is the value of the `currentTarget`.
`inputType` | Indicates whether this event was caused by a mouse or keyboard interaction.
`newIndex` | The zero-based index after the change.
`oldIndex` | The zero-based index before the change.
`relatedObject` | Contains a reference to the child object that corresponds to the new index.
`target` | The Object that dispatched the event; it is not always the Object listening for the event. Use the `currentTarget` property to always access the Object listening for the event.
`TriggerEvent` | The event that triggered this event.
`Type` | IndexChangedEvent.CHANGE

CHILD_INDEX_CHANGE | Constant |

`public static const CHILD_INDEX_CHANGE:String = childIndexChange`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

The IndexChangedEvent.CHILD_INDEX_CHANGE constant defines the value of the `type` property of the event object for a childIndexChange event, which indicates that a component's index among a container's children has changed.

The properties of the event object have the following values:

Property | Value
--- | ---
`bubbles` | false
`cancelable` | false
`currentTarget` | The Object that defines the event listener that handles the event. For example, if you use `myButton.addEventListener()` to register an event listener, myButton is the value of the `currentTarget`.
`inputType` | Indicates whether this event was caused by a mouse or keyboard interaction.
`newIndex` | The zero-based index of the child after the change.
`oldIndex` | The zero-based index of the child before the change.
`relatedObject` | Contains a reference to the child object whose index changed.
`target` | The Object that dispatched the event; it is not always the Object listening for the event. Use the `currentTarget` property to always access the Object listening for the event.
`TriggerEvent` | null
`Type` | IndexChangedEvent.CHILD_INDEX_CHANGE

HEADER_SHIFT | Constant |

`public static const HEADER_SHIFT:String = headerShift`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

The IndexChangedEvent.HEADER_SHIFT constant defines the value of the `type` property of the event object for a `headerShift` event, which indicates that a header has changed its index, as when a user drags a DataGrid column to a new position.

The properties of the event object have the following values:

Property | Value
--- | ---
`bubbles` | false
`cancelable` | false
`currentTarget` | The Object that defines the event listener that handles the event. For example, if you use `myButton.addEventListener()` to register an event listener, myButton is the value of the `currentTarget`.
`inputType` | Indicates whether this event was caused by a mouse or keyboard interaction.
`newIndex` | The zero-based index of the header after the change.
`oldIndex` | The zero-based index of the header before the change.
`relatedObject` | null
`target` | The Object that dispatched the event; it is not always the Object listening for the event. Use the `currentTarget` property to always access the Object listening for the event.
`TriggerEvent` | The event that triggered this event.
`Type` | IndexChangedEvent.HEADER_SHIFT

Wed Nov 15 2017, 09:50 AM +01:00