The WheelEvent interface represents events that occur due to the user moving a mouse wheel or similar input device.

Documentation WheelEvent by Mozilla Contributors, licensed under CC-BY-SA 2.5.

See:

Constructor

new (type:String, ?eventInitDict:WheelEventInit)

Throws:

null

DOMError

Variables

read onlydeltaMode:Int

Returns an unsigned long representing the unit of the delta values scroll amount. Permitted values are:

Constant Value Description
DOM_DELTA_PIXEL 0x00 The delta values are specified in pixels.
DOM_DELTA_LINE 0x01 The delta values are specified in lines.
DOM_DELTA_PAGE 0x02 The delta values are specified in pages.

read onlydeltaX:Float

Returns a double representing the horizontal scroll amount.

read onlydeltaY:Float

Returns a double representing the vertical scroll amount.

read onlydeltaZ:Float

Returns a double representing the scroll amount for the z-axis.

Static variables

staticinline read onlyDOM_DELTA_LINE:Int = 1

staticinline read onlyDOM_DELTA_PAGE:Int = 2

staticinline read onlyDOM_DELTA_PIXEL:Int = 0

Inherited Variables

Defined by MouseEvent

read onlyaltKey:Bool

Returns true if the alt key was down when the mouse event was fired.

read onlybutton:Int

The button number that was pressed when the mouse event was fired. 

read onlybuttons:Int

The buttons being pressed when the mouse event was fired

read onlyclientX:Int

The X coordinate of the mouse pointer in local (DOM content) coordinates.

read onlyclientY:Int

The Y coordinate of the mouse pointer in local (DOM content) coordinates.

read onlyctrlKey:Bool

Returns true if the control key was down when the mouse event was fired.

read onlymetaKey:Bool

Returns true if the meta key was down when the mouse event was fired.

read onlymovementX:Int

The X coordinate of the mouse pointer relative to the position of the last mousemove event.

read onlymovementY:Int

The Y coordinate of the mouse pointer relative to the position of the last mousemove event.

read onlyoffsetX:Int

The X coordinate of the mouse pointer relative to the position of the padding edge of the target node.

read onlyoffsetY:Int

The Y coordinate of the mouse pointer relative to the position of the padding edge of the target node.

read onlyregion:String

Returns the id of the hit region affected by the event. If no hit region is affected, null is returned.

read onlyrelatedTarget:EventTarget

The secondary target for the event, if there is one.

read onlyscreenX:Int

The X coordinate of the mouse pointer in global (screen) coordinates.

read onlyscreenY:Int

The Y coordinate of the mouse pointer in global (screen) coordinates.

read onlyshiftKey:Bool

Returns true if the shift key was down when the mouse event was fired.

Defined by UIEvent

cancelBubble:Bool

Is a Boolean indicating whether the bubbling of the event has been canceled or not.

read onlydetail:Int

Returns a long with details about the event, depending on the event type.

read onlyisChar:Bool

Returns a Boolean indicating whether the event produced a key character or not.

read onlylayerX:Int

Returns the horizontal coordinate of the event relative to the current layer.

read onlylayerY:Int

Returns the vertical coordinate of the event relative to the current layer.

read onlypageX:Int

Returns the horizontal coordinate of the event relative to the whole document.

read onlypageY:Int

Returns the vertical coordinate of the event relative to the whole document.

read onlyrangeOffset:Int

read onlyrangeParent:Node

read onlyview:Window

Returns a WindowProxy that contains the view that generated the event.

read onlywhich:Int

Returns the numeric keyCode of the key pressed, or the character code (charCode) for an alphanumeric key pressed.

Defined by Event

read onlybubbles:Bool

A Boolean indicating whether the event bubbles up through the DOM or not.

read onlycancelable:Bool

A Boolean indicating whether the event is cancelable.

read onlycurrentTarget:EventTarget

A reference to the currently registered target for the event. This is the object to which the event is currently slated to be sent to; it's possible this has been changed along the way through retargeting.

read onlydefaultPrevented:Bool

Indicates whether or not event.preventDefault() has been called on the event.

read onlyeventPhase:Int

Indicates which phase of the event flow is being processed.

read onlyexplicitOriginalTarget:EventTarget

The explicit original target of the event (Mozilla-specific).

read onlyisTrusted:Bool

Indicates whether or not the event was initiated by the browser (after a user click for instance) or by a script (using an event creation method, like event.initEvent)

read onlyoriginalTarget:EventTarget

The original target of the event, before any retargetings (Mozilla-specific).

read onlytarget:EventTarget

A reference to the target to which the event was originally dispatched.

read onlytimeStamp:Float

The time at which the event was created, in milliseconds. By specification, this value is time since epoch, but in reality browsers' definitions vary; in addition, work is underway to change this to be a DOMHighResTimeStamp instead.

read onlytype:String

The name of the event (case-insensitive).

Inherited Methods

Defined by MouseEvent

getModifierState (keyArg:String):Bool

Returns the current state of the specified modifier key. See the KeyboardEvent.getModifierState() for details.

initMouseEvent (typeArg:String, canBubbleArg:Bool, cancelableArg:Bool, viewArg:Window, detailArg:Int, screenXArg:Int, screenYArg:Int, clientXArg:Int, clientYArg:Int, ctrlKeyArg:Bool, altKeyArg:Bool, shiftKeyArg:Bool, metaKeyArg:Bool, buttonArg:Int, relatedTargetArg:EventTarget):Void

Initializes the value of a MouseEvent created. If the event has already being dispatched, this method does nothing.

initNSMouseEvent (typeArg:String, canBubbleArg:Bool, cancelableArg:Bool, viewArg:Window, detailArg:Int, screenXArg:Int, screenYArg:Int, clientXArg:Int, clientYArg:Int, ctrlKeyArg:Bool, altKeyArg:Bool, shiftKeyArg:Bool, metaKeyArg:Bool, buttonArg:Int, relatedTargetArg:EventTarget, pressure:Float, inputSourceArg:Int):Void

Defined by UIEvent

initUIEvent (aType:String, aCanBubble:Bool, aCancelable:Bool, aView:Window, aDetail:Int):Void

Initializes a UIEvent object. If the event has already being dispatched, this method does nothing.

Defined by Event

getPreventDefault ():Bool

Non-standard. Returns the value of Event.defaultPrevented. Use Event.defaultPrevented instead.

initEvent (type:String, bubbles:Bool, cancelable:Bool):Void

Initializes the value of an Event created. If the event has already being dispatched, this method does nothing.

preventDefault ():Void

Cancels the event (if it is cancelable).

stopImmediatePropagation ():Void

For this particular event, no other listener will be called. Neither those attached on the same element, nor those attached on elements which will be traversed later (in capture phase, for instance)

stopPropagation ():Void

Stops the propagation of events further along in the DOM.