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class ProgressEvent

package openfl.events

extends Event

@:directlyUsed@:fileXml("tags=\"haxe,release\"")@:noDebug

Available on all platforms

A ProgressEvent object is dispatched when a load operation has begun or a socket has received data. These events are usually generated when SWF files, images or data are loaded into an application. There are two types of progress events: ProgressEvent.PROGRESS and ProgressEvent.SOCKET_DATA. Additionally, in AIR ProgressEvent objects are dispatched when a data is sent to or from a child process using the NativeProcess class.

Static variables

@:value("progress")staticinlineread onlyPROGRESS:EventType<ProgressEvent> = "progress"

Defines the value of the type property of a progress event object.

This event has the following properties:

PropertyValue
bubblesfalse
bytesLoadedThe number of items or bytes loaded at the time the listener processes the event.
bytesTotalThe total number of items or bytes that ultimately will be loaded if the loading process succeeds.
cancelablefalse; there is no default behavior to cancel.
currentTargetThe object that is actively processing the Event object with an event listener.
targetThe object reporting progress.

@:value("socketData")staticinlineread onlySOCKET_DATA:EventType<ProgressEvent> = "socketData"

Defines the value of the type property of a socketData event object. This event has the following properties:

PropertyValue
bubblesfalse
cancelablefalse; there is no default behavior to cancel.
currentTargetThe object that is actively processing the Event.
bytesLoadedThe number of items or bytes loaded at the time the listener processes the event.
bytesTotal0; this property is not used by socketData event objects.
targetThe socket reporting progress.

@:value("standardErrorData")staticinlineread onlySTANDARD_ERROR_DATA:EventType<ProgressEvent> = "standardErrorData"

Available on AIR, Android, Flash, HashLink, Linux, Neko, Windows, iOS, macOS

Defines the value of the type property of a standardErrorData event object. This event has the following properties:

PropertyValue
bubblesfalse
cancelablefalse; there is no default behavior to cancel.
currentTargetThe object that is actively processing the Event.
bytesLoadedThe number of bytes of output data buffered by the NativeProcessObject.standardError due to this event.
bytesTotal0; this property is not used by standardErrorData event objects.
targetThe NativeProcess object reporting output data.

@:value("standardOutputData")staticinlineread onlySTANDARD_OUTPUT_DATA:EventType<ProgressEvent> = "standardOutputData"

Available on AIR, Android, Flash, HashLink, Linux, Neko, Windows, iOS, macOS

Defines the value of the type property of a standardOutputData event object. This event has the following properties:

PropertyValue
bubblesfalse
cancelablefalse; there is no default behavior to cancel.
currentTargetThe object that is actively processing the Event.
bytesLoadedThe number of bytes of output data buffered by the NativeProcessObject.standardOutput due to this event.
bytesTotal0; this property is not used by standardOutputData event objects.
targetThe NativeProcess object reporting output data.

Constructor

@:value({ bytesTotal : 0, bytesLoaded : 0, cancelable : false, bubbles : false })new(type:String, bubbles:Bool = false, cancelable:Bool = false, bytesLoaded:Float = 0, bytesTotal:Float = 0)

Creates an Event object that contains information about progress events. Event objects are passed as parameters to event listeners.

Parameters:

type

The type of the event. Possible values are:ProgressEvent.PROGRESS, ProgressEvent.SOCKET_DATA, ProgressEvent.STANDARD_ERROR_DATA, ProgressEvent.STANDARD_INPUT_PROGRESS, and ProgressEvent.STANDARD_OUTPUT_DATA.

bubbles

Determines whether the Event object participates in the bubbling stage of the event flow.

cancelable

Determines whether the Event object can be canceled.

bytesLoaded

The number of items or bytes loaded at the time the listener processes the event.

bytesTotal

The total number of items or bytes that will be loaded if the loading process succeeds.

Variables

bytesLoaded:Float

The number of items or bytes loaded when the listener processes the event.

bytesTotal:Float

The total number of items or bytes that will be loaded if the loading process succeeds. If the progress event is dispatched/attached to a Socket object, the bytesTotal will always be 0 unless a value is specified in the bytesTotal parameter of the constructor. The actual number of bytes sent back or forth is not set and is up to the application developer.

Methods

Inherited Variables

Defined by Event

read onlybubbles:Bool

Indicates whether an event is a bubbling event. If the event can bubble, this value is true; otherwise it is false.

When an event occurs, it moves through the three phases of the event flow: the capture phase, which flows from the top of the display list hierarchy to the node just before the target node; the target phase, which comprises the target node; and the bubbling phase, which flows from the node subsequent to the target node back up the display list hierarchy.

Some events, such as the activate and unload events, do not have a bubbling phase. The bubbles property has a value of false for events that do not have a bubbling phase.

read onlycancelable:Bool

Indicates whether the behavior associated with the event can be prevented. If the behavior can be canceled, this value is true; otherwise it is false.

read onlycurrentTarget:Object

The object that is actively processing the Event object with an event listener. For example, if a user clicks an OK button, the current target could be the node containing that button or one of its ancestors that has registered an event listener for that event.

read onlyeventPhase:EventPhase

The current phase in the event flow. This property can contain the following numeric values:

read onlytarget:Object

The event target. This property contains the target node. For example, if a user clicks an OK button, the target node is the display list node containing that button.

read onlytype:String

The type of event. The type is case-sensitive.

Inherited Methods

Defined by Event

@:value({ p5 : null, p4 : null, p3 : null, p2 : null, p1 : null })formatToString(className:String, ?p1:String, ?p2:String, ?p3:String, ?p4:String, ?p5:String):String

A utility function for implementing the toString() method in custom OpenFL Event classes. Overriding the toString() method is recommended, but not required.

class PingEvent extends Event {
	var URL:String;

	public function new() {
		super();
	}

	public override function toString():String {
		return formatToString("PingEvent", "type", "bubbles", "cancelable", "eventPhase", "URL");
	}
}

Parameters:

className

The name of your custom Event class. In the previous example, the className parameter is PingEvent.

Returns:

The name of your custom Event class and the String value of your ...arguments parameter.

isDefaultPrevented():Bool

Checks whether the preventDefault() method has been called on the event. If the preventDefault() method has been called, returns true; otherwise, returns false.

Returns:

If preventDefault() has been called, returns true; otherwise, returns false.

preventDefault():Void

Cancels an event's default behavior if that behavior can be canceled. Many events have associated behaviors that are carried out by default. For example, if a user types a character into a text field, the default behavior is that the character is displayed in the text field. Because the TextEvent.TEXT_INPUT event's default behavior can be canceled, you can use the preventDefault() method to prevent the character from appearing. An example of a behavior that is not cancelable is the default behavior associated with the Event.REMOVED event, which is generated whenever Flash Player is about to remove a display object from the display list. The default behavior (removing the element) cannot be canceled, so the preventDefault() method has no effect on this default behavior. You can use the Event.cancelable property to check whether you can prevent the default behavior associated with a particular event. If the value of Event.cancelable is true, then preventDefault() can be used to cancel the event; otherwise, preventDefault() has no effect.

stopImmediatePropagation():Void

Prevents processing of any event listeners in the current node and any subsequent nodes in the event flow. This method takes effect immediately, and it affects event listeners in the current node. In contrast, the stopPropagation() method doesn't take effect until all the event listeners in the current node finish processing.

Note: This method does not cancel the behavior associated with this event; see preventDefault() for that functionality.

stopPropagation():Void

Prevents processing of any event listeners in nodes subsequent to the current node in the event flow. This method does not affect any event listeners in the current node (currentTarget). In contrast, the stopImmediatePropagation() method prevents processing of event listeners in both the current node and subsequent nodes. Additional calls to this method have no effect. This method can be called in any phase of the event flow.

Note: This method does not cancel the behavior associated with this event; see preventDefault() for that functionality.