Packagefeathers.controls
Classpublic class SimpleScrollBar
InheritanceSimpleScrollBar Inheritance FeathersControl Inheritance Sprite Inheritance DisplayObjectContainer Inheritance DisplayObject Inheritance EventDispatcher Inheritance Object
Implements IDirectionalScrollBar

Product Version : Feathers 1.0.0

Select a value between a minimum and a maximum by dragging a thumb over a physical range. This type of scroll bar does not have a visible track, and it does not have increment and decrement buttons. It is ideal for mobile applications where the scroll bar is often simply a visual element to indicate the scroll position. For a more feature-rich scroll bar, see the ScrollBar component.

The following example updates a list to use simple scroll bars:

list.horizontalScrollBarFactory = function():IScrollBar
{
    return new SimpleScrollBar();
};
list.verticalScrollBarFactory = function():IScrollBar
{
    return new SimpleScrollBar();
};

See also

How to use the Feathers SimpleScrollBar component
feathers.controls.ScrollBar


Public Properties
 PropertyDefined By
 InheritedaddedEffect : Function
An optional effect that is activated when the component is added to the stage.
FeathersControl
 Inheritedalpha : Number
The opacity of the object.
DisplayObject
 Inheritedbase : DisplayObject
[read-only] The topmost object in the display tree the object is part of.
DisplayObject
 InheritedblendMode : String
The blend mode determines how the object is blended with the objects underneath.
DisplayObject
 Inheritedbounds : Rectangle
[read-only] The bounds of the object relative to the local coordinates of the parent.
DisplayObject
  clampToRange : Boolean = false
Determines if the value should be clamped to the range between the minimum and maximum.
SimpleScrollBar
 InheriteddefaultTextEditorFactory : Function
[static] A function used by all UI controls that support text editor to create an ITextEditor instance.
FeathersControl
 InheriteddefaultTextRendererFactory : Function
[static] A function used by all UI controls that support text renderers to create an ITextRenderer instance.
FeathersControl
 Inheriteddepth : int
[read-only] The component's depth in the display list, relative to the stage.
FeathersControl
 InheritedeffectsSuspended : Boolean
[read-only] Indicates if effects have been suspended.
FeathersControl
 InheritedexplicitHeight : Number
[read-only] The height value explicitly set by passing a value to the height setter or by calling the setSize() function.
FeathersControl
 InheritedexplicitMaxHeight : Number
[read-only] The maximum height value explicitly set by passing a value to the maxHeight setter.
FeathersControl
 InheritedexplicitMaxWidth : Number
[read-only] The maximum width value explicitly set by passing a value to the maxWidth setter.
FeathersControl
 InheritedexplicitMinHeight : Number
[read-only] The minimum height value explicitly set by passing a value to the minHeight setter.
FeathersControl
 InheritedexplicitMinWidth : Number
[read-only] The minimum width value explicitly set by passing a value to the minWidth setter.
FeathersControl
 InheritedexplicitWidth : Number
[read-only] The width value explicitly set by passing a value to the width setter or to the setSize() method.
FeathersControl
 Inheritedfilter : FragmentFilter
The filter that is attached to the display object.
DisplayObject
 InheritedfocusInEffect : Function
An optional effect that is activated when the component receives focus.
FeathersControl
 InheritedfocusManager : IFocusManager
The implementation of this property is provided for convenience, but it cannot be used unless a subclass implements the IFocusDisplayObject interface. The current focus manager for this component.
FeathersControl
 InheritedfocusOutEffect : Function
An optional effect that is activated when the component loses focus.
FeathersControl
 InheritedfocusOwner : IFocusDisplayObject
The implementation of this property is provided for convenience, but it cannot be used unless a subclass implements the IFocusDisplayObject interface. Used for associating focusable display objects that are not direct children with an "owner" focusable display object, such as pop-ups.
FeathersControl
  globalStyleProvider : IStyleProvider
[static] The default IStyleProvider for all SimpleScrollBar components.
SimpleScrollBar
 Inheritedheight : Number
[override] The height of the component, in pixels.
FeathersControl
 InheritedhideEffect : Function
An optional effect that is activated when the component is hidden.
FeathersControl
 InheritedincludeInLayout : Boolean
Determines if the ILayout should use this object or ignore it.
FeathersControl
 Inheritedis3D : Boolean
[read-only] Indicates if this object or any of its parents is a 'Sprite3D' object.
DisplayObject
 InheritedisCreated : Boolean
[read-only] Determines if the component has been initialized and validated for the first time.
FeathersControl
 InheritedisEnabled : Boolean
Indicates whether the control is interactive or not.
FeathersControl
 InheritedisFocusEnabled : Boolean
The implementation of this property is provided for convenience, but it cannot be used unless a subclass implements the IFocusDisplayObject interface. Determines if this component can receive focus.
FeathersControl
 InheritedisInitialized : Boolean
[read-only] Determines if the component has been initialized yet.
FeathersControl
 InheritedisQuickHitAreaEnabled : Boolean
Similar to mouseChildren on the classic display list.
FeathersControl
 InheritedisShowingFocus : Boolean
[read-only] The implementation of this method is provided for convenience, but it cannot be used unless a subclass implements the IFocusDisplayObject interface. Indicates if the showFocus() method has been called on the object when it has focus.
FeathersControl
 InheritedlayoutData : ILayoutData
Extra parameters associated with this display object that will be used by the layout algorithm.
FeathersControl
  liveDragging : Boolean = true
Determines if the scroll bar dispatches the Event.CHANGE event every time the thumb moves, or only once it stops moving.
SimpleScrollBar
 InheritedmaintainTouchFocus : Boolean
[read-only] The implementation of this method is provided for convenience, but it cannot be used unless a subclass implements the IFocusDisplayObject interface. If true, the display object should remain in focus, even if something else is touched.
FeathersControl
 Inheritedmask : DisplayObject
The display object that acts as a mask for the current object.
DisplayObject
 InheritedmaskInverted : Boolean
Indicates if the masked region of this object is set to be inverted.
DisplayObject
 InheritedmaxHeight : Number
The maximum recommended height to be used for self-measurement and, optionally, by any code that is resizing this component.
FeathersControl
  maximum : Number
The maximum numeric value of the range.
SimpleScrollBar
 InheritedmaxWidth : Number
The maximum recommended width to be used for self-measurement and, optionally, by any code that is resizing this component.
FeathersControl
 InheritedminHeight : Number
The minimum recommended height to be used for self-measurement and, optionally, by any code that is resizing this component.
FeathersControl
  minimum : Number
The minimum numeric value of the range.
SimpleScrollBar
 InheritedminTouchHeight : Number
If using isQuickHitAreaEnabled, and the hit area's height is smaller than this value, it will be expanded.
FeathersControl
 InheritedminTouchWidth : Number
If using isQuickHitAreaEnabled, and the hit area's width is smaller than this value, it will be expanded.
FeathersControl
 InheritedminWidth : Number
The minimum recommended width to be used for self-measurement and, optionally, by any code that is resizing this component.
FeathersControl
 InheritedmoveEffect : Function
An optional effect that is activated when the component is moved to a new position.
FeathersControl
 Inheritedname : String
The name of the display object (default: null).
DisplayObject
 InheritednextDownFocus : IFocusDisplayObject
The implementation of this property is provided for convenience, but it cannot be used unless a subclass implements the IFocusDisplayObject interface. The next object that will receive focus when Keyboard.DOWN is pressed at KeyLocation.D_PAD and a focus manager is enabled.
FeathersControl
 InheritednextLeftFocus : IFocusDisplayObject
The implementation of this property is provided for convenience, but it cannot be used unless a subclass implements the IFocusDisplayObject interface. The next object that will receive focus when Keyboard.LEFT is pressed at KeyLocation.D_PAD and a focus manager is enabled.
FeathersControl
 InheritednextRightFocus : IFocusDisplayObject
The implementation of this property is provided for convenience, but it cannot be used unless a subclass implements the IFocusDisplayObject interface. The next object that will receive focus when Keyboard.RIGHT is pressed at KeyLocation.D_PAD and a focus manager is enabled.
FeathersControl
 InheritednextTabFocus : IFocusDisplayObject
The implementation of this property is provided for convenience, but it cannot be used unless a subclass implements the IFocusDisplayObject interface. The next object that will receive focus when the tab key is pressed when a focus manager is enabled.
FeathersControl
 InheritednextUpFocus : IFocusDisplayObject
The implementation of this property is provided for convenience, but it cannot be used unless a subclass implements the IFocusDisplayObject interface. The next object that will receive focus when Keyboard.UP is pressed at KeyLocation.D_PAD and a focus manager is enabled.
FeathersControl
 InheritednumChildren : int
[read-only] The number of children of this container.
DisplayObjectContainer
  page : Number
The amount the scroll bar value must change to get from one "page" to the next.
SimpleScrollBar
 Inheritedparent : DisplayObjectContainer
[read-only] The display object container that contains this display object.
DisplayObject
 InheritedpivotX : Number
The x coordinate of the object's origin in its own coordinate space (default: 0).
DisplayObject
 InheritedpivotY : Number
The y coordinate of the object's origin in its own coordinate space (default: 0).
DisplayObject
 InheritedpreviousTabFocus : IFocusDisplayObject
The implementation of this property is provided for convenience, but it cannot be used unless a subclass implements the IFocusDisplayObject interface. The previous object that will receive focus when the tab key is pressed while holding shift when a focus manager is enabled.
FeathersControl
  repeatDelay : Number
The time, in seconds, before actions are repeated.
SimpleScrollBar
 InheritedrequiresRedraw : Boolean
[read-only] Indicates if the object needs to be redrawn in the upcoming frame, i.e.
DisplayObject
 InheritedresizeEffect : Function
An optional effect that is activated when the component is resized with new dimensions.
FeathersControl
 Inheritedroot : DisplayObject
[read-only] The root object the display object is connected to (i.e.
DisplayObject
 Inheritedrotation : Number
The rotation of the object in radians.
DisplayObject
 Inheritedscale : Number
Sets both 'scaleX' and 'scaleY' to the same value.
DisplayObject
 InheritedscaleX : Number
The horizontal scale factor.
DisplayObject
 InheritedscaleY : Number
The vertical scale factor.
DisplayObject
 InheritedshowEffect : Function
An optional effect that is activated when the component is shown.
FeathersControl
 InheritedskewX : Number
The horizontal skew angle in radians.
DisplayObject
 InheritedskewY : Number
The vertical skew angle in radians.
DisplayObject
 Inheritedstage : Stage
[read-only] The stage the display object is connected to, or null if it is not connected to the stage.
DisplayObject
  step : Number
The amount the value must change to increment or decrement.
SimpleScrollBar
 InheritedstyleName : String
The concatenated styleNameList, with values separated by spaces.
FeathersControl
 InheritedstyleNameList : TokenList
[read-only] Contains a list of all "styles" assigned to this control.
FeathersControl
 InheritedstyleProvider : IStyleProvider
When a component initializes, a style provider may be used to set properties that affect the component's visual appearance.
FeathersControl
  thumbFactory : Function
A function used to generate the scroll bar's thumb sub-component.
SimpleScrollBar
  thumbProperties : Object
An object that stores properties for the scroll bar's thumb, and the properties will be passed down to the thumb when the scroll bar validates.
SimpleScrollBar
 InheritedtoolTip : String
Text to display in a tool tip to when hovering over this component, if the ToolTipManager is enabled.
FeathersControl
 Inheritedtouchable : Boolean
Indicates if this object (and its children) will receive touch events.
DisplayObject
 InheritedtouchGroup : Boolean
If a container is a 'touchGroup', it will act as a single touchable object.
DisplayObjectContainer
 InheritedtransformationMatrix : Matrix
The transformation matrix of the object relative to its parent.
DisplayObject
 InheritedtransformationMatrix3D : Matrix3D
[read-only] The 3D transformation matrix of the object relative to its parent.
DisplayObject
 InheriteduseHandCursor : Boolean
Indicates if the mouse cursor should transform into a hand while it's over the sprite.
DisplayObject
  value : Number
The current numeric value.
SimpleScrollBar
 Inheritedvisible : Boolean
The visibility of the object.
DisplayObject
 Inheritedwidth : Number
[override] The width of the component, in pixels.
FeathersControl
 Inheritedx : Number
The x coordinate of the object relative to the local coordinates of the parent.
DisplayObject
 Inheritedy : Number
The y coordinate of the object relative to the local coordinates of the parent.
DisplayObject
Protected Properties
 PropertyDefined By
 InheritedactualHeight : Number = 0
The final height value that should be used for layout.
FeathersControl
 InheritedactualMinHeight : Number = 0
The final minimum height value that should be used for layout.
FeathersControl
 InheritedactualMinWidth : Number = 0
The final minimum width value that should be used for layout.
FeathersControl
 InheritedactualWidth : Number = 0
The final width value that should be used for layout.
FeathersControl
 InheriteddefaultStyleProvider : IStyleProvider
[read-only] When the FeathersControl constructor is called, the styleProvider property is set to this value.
FeathersControl
  thumb : DisplayObject
The thumb sub-component.
SimpleScrollBar
  thumbStyleName : String = feathers-simple-scroll-bar-thumb
The value added to the styleNameList of the thumb.
SimpleScrollBar
Public Methods
 MethodDefined By
  
Constructor.
SimpleScrollBar
 Inherited
Adds a child to the container.
DisplayObjectContainer
 Inherited
Adds a child to the container at a certain index.
DisplayObjectContainer
 Inherited
addEventListener(type:String, listener:Function):void
[override] Registers an event listener at a certain object.
DisplayObject
 Inherited
alignPivot(horizontalAlign:String = center, verticalAlign:String = center):void
Moves the pivot point to a certain position within the local coordinate system of the object.
DisplayObject
 Inherited
broadcastEvent(event:Event):void
Dispatches an event on all children (recursively).
DisplayObjectContainer
 Inherited
broadcastEventWith(eventType:String, data:Object = null):void
Dispatches an event with the given parameters on all children (recursively).
DisplayObjectContainer
 Inherited
contains(child:DisplayObject):Boolean
Determines if a certain object is a child of the container (recursively).
DisplayObjectContainer
 Inherited
dispatchEvent(event:Event):void
Dispatches an event to all objects that have registered listeners for its type.
EventDispatcher
 Inherited
dispatchEventWith(type:String, bubbles:Boolean = false, data:Object = null):void
Dispatches an event with the given parameters to all objects that have registered listeners for the given type.
EventDispatcher
 Inherited
dispose():void
[override] Disposes the resources of all children.
DisplayObjectContainer
 Inherited
drawToBitmapData(out:BitmapData = null, color:uint = 0x0, alpha:Number = 0.0):BitmapData
Draws the object into a BitmapData object.
DisplayObject
 Inherited
getBounds(targetSpace:DisplayObject, resultRect:Rectangle = null):Rectangle
[override] Feathers components use an optimized getBounds() implementation that may sometimes behave differently than regular Starling display objects.
FeathersControl
 Inherited
Returns a child object at a certain index.
DisplayObjectContainer
 Inherited
Returns a child object with a certain name (non-recursively).
DisplayObjectContainer
 Inherited
Returns the index of a child within the container, or "-1" if it is not found.
DisplayObjectContainer
 Inherited
getTransformationMatrix(targetSpace:DisplayObject, out:Matrix = null):Matrix
Creates a matrix that represents the transformation from the local coordinate system to another.
DisplayObject
 Inherited
getTransformationMatrix3D(targetSpace:DisplayObject, out:Matrix3D = null):Matrix3D
Creates a matrix that represents the transformation from the local coordinate system to another.
DisplayObject
 Inherited
globalToLocal(globalPoint:Point, out:Point = null):Point
Transforms a point from global (stage) coordinates to the local coordinate system.
DisplayObject
 Inherited
globalToLocal3D(globalPoint:Point, out:Vector3D = null):Vector3D
Transforms a point from global (stage) coordinates to the 3D local coordinate system.
DisplayObject
 Inherited
hasEventListener(type:String, listener:Function = null):Boolean
If called with one argument, figures out if there are any listeners registered for the given event type.
EventDispatcher
 Inherited
hideFocus():void
The implementation of this method is provided for convenience, but it cannot be used unless a subclass implements the IFocusDisplayObject interface.
FeathersControl
 Inherited
hitTest(localPoint:Point):DisplayObject
[override] Returns the object that is found topmost beneath a point in local coordinates, or nil if the test fails.
DisplayObjectContainer
 Inherited
hitTestMask(localPoint:Point):Boolean
Checks if a certain point is inside the display object's mask.
DisplayObject
 Inherited
If the component has not yet initialized, initializes immediately.
FeathersControl
 Inherited
invalidate(flag:String):void
Call this function to tell the UI control that a redraw is pending.
FeathersControl
 Inherited
isInvalid(flag:String = null):Boolean
Indicates whether the control is pending validation or not.
FeathersControl
 Inherited
local3DToGlobal(localPoint:Vector3D, out:Point = null):Point
Transforms a 3D point from the local coordinate system to global (stage) coordinates.
DisplayObject
 Inherited
localToGlobal(localPoint:Point, out:Point = null):Point
Transforms a point from the local coordinate system to global (stage) coordinates.
DisplayObject
 Inherited
move(x:Number, y:Number):void
Sets both the x and the y positions of the control in a single function call.
FeathersControl
 Inherited
removeChild(child:DisplayObject, dispose:Boolean = false):DisplayObject
Removes a child from the container.
DisplayObjectContainer
 Inherited
removeChildAt(index:int, dispose:Boolean = false):DisplayObject
Removes a child at a certain index.
DisplayObjectContainer
 Inherited
removeChildren(beginIndex:int = 0, endIndex:int = -1, dispose:Boolean = false):void
Removes a range of children from the container (endIndex included).
DisplayObjectContainer
 Inherited
removeEventListener(type:String, listener:Function):void
[override] Removes an event listener from the object.
DisplayObject
 Inherited
removeEventListeners(type:String = null):void
[override] Removes all event listeners with a certain type, or all of them if type is null.
DisplayObject
 Inherited
removeFromParent(dispose:Boolean = false):void
Removes the object from its parent, if it has one, and optionally disposes it.
DisplayObject
 Inherited
removeFromParentWithEffect(effect:Function, dispose:Boolean = false):void
Plays an effect before removing the component from its parent.
FeathersControl
 Inherited
render(painter:Painter):void
[override] Renders the display object with the help of a painter object.
DisplayObjectContainer
 Inherited
Resets the styleProvider property to its default value, which is usually the global style provider for the component.
FeathersControl
 Inherited
Indicates that effects should be re-activated after being suspended.
FeathersControl
 Inherited
setChildIndex(child:DisplayObject, index:int):void
Moves a child to a certain index.
DisplayObjectContainer
 Inherited
Forces the object to be redrawn in the next frame.
DisplayObject
 Inherited
setSize(width:Number, height:Number):void
Sets both the width and the height of the control in a single function call.
FeathersControl
 Inherited
showFocus():void
The implementation of this method is provided for convenience, but it cannot be used unless a subclass implements the IFocusDisplayObject interface.
FeathersControl
 Inherited
sortChildren(compareFunction:Function):void
Sorts the children according to a given function (that works just like the sort function of the Vector class).
DisplayObjectContainer
 Inherited
Indicates that effects should not be activated temporarily.
FeathersControl
 Inherited
Swaps the indexes of two children.
DisplayObjectContainer
 Inherited
swapChildrenAt(index1:int, index2:int):void
Swaps the indexes of two children.
DisplayObjectContainer
 Inherited
validate():void
Immediately validates the display object, if it is invalid.
FeathersControl
Protected Methods
 MethodDefined By
  
If the component's dimensions have not been set explicitly, it will measure its content and determine an ideal size for itself.
SimpleScrollBar
 Inherited
clearInvalidationFlag(flag:String):void
Clears an invalidation flag.
FeathersControl
  
Creates and adds the thumb sub-component and removes the old instance, if one exists.
SimpleScrollBar
 Inherited
draw():void
Override to customize layout and to adjust properties of children.
FeathersControl
 Inherited
focusInHandler(event:Event):void
Default event handler for FeathersEventType.FOCUS_IN that may be overridden in subclasses to perform additional actions when the component receives focus.
FeathersControl
 Inherited
Default event handler for FeathersEventType.FOCUS_OUT that may be overridden in subclasses to perform additional actions when the component loses focus.
FeathersControl
 Inherited
The next style that is set will not be restricted.
FeathersControl
 Inherited
initialize():void
Called the first time that the UI control is added to the stage, and you should override this function to customize the initialization process.
FeathersControl
 Inherited
processStyleRestriction(key:Object):Boolean
Used by setters for properties that are considered "styles" to determine if the setter has been called directly on the component or from a style provider.
FeathersControl
 Inherited
Updates the focus indicator skin by showing or hiding it and adjusting its position and dimensions.
FeathersControl
 Inherited
saveMeasurements(width:Number, height:Number, minWidth:Number = 0, minHeight:Number = 0):Boolean
Saves the dimensions and minimum dimensions calculated for the component.
FeathersControl
 Inherited
setInvalidationFlag(flag:String):void
Sets an invalidation flag.
FeathersControl
 Inherited
setSizeInternal(width:Number, height:Number, canInvalidate:Boolean):Boolean
Sets the width and height of the control, with the option of invalidating or not.
FeathersControl
Events
 Event Summary Defined By
 InheritedDispatched when an object is added to a parent.DisplayObject
 InheritedDispatched when an object is connected to the stage (directly or indirectly).DisplayObject
  Dispatched when the user starts dragging the scroll bar's thumb.SimpleScrollBar
  Dispatched when the scroll bar's value changes.SimpleScrollBar
 InheritedDispatched after the component has validated for the first time.FeathersControl
  Dispatched when the user stops dragging the scroll bar's thumb.SimpleScrollBar
 InheritedDispatched once every frame on every object that is connected to the stage.DisplayObject
 InheritedDispatched after initialize() has been called, but before the first time that draw() has been called.FeathersControl
 InheritedDispatched when a key on the keyboard is pressed.DisplayObject
 InheritedDispatched when a key on the keyboard is released.DisplayObject
 InheritedDispatched when an object is removed from its parent.DisplayObject
 InheritedDispatched when an object is removed from the stage and won't be rendered any longer.DisplayObject
 InheritedDispatched when the width or height of the control changes.FeathersControl
 InheritedDispatched when an object is touched.DisplayObject
Styles
 Style Description Defined By
  
customThumbStyleName
Type: String
A style name to add to the scroll bar's thumb sub-component. Typically used by a theme to provide different styles to different scroll bars.

In the following example, a custom thumb style name is passed to the scroll bar:

scrollBar.customThumbStyleName = "my-custom-thumb";

In your theme, you can target this sub-component style name to provide different styles than the default:

getStyleProviderForClass( Button ).setFunctionForStyleName( "my-custom-thumb", setCustomThumbStyles );
The default value is null.

See also

SimpleScrollBar
  
direction
Type: String
Determines if the scroll bar's thumb can be dragged horizontally or vertically. When this value changes, the scroll bar's width and height values do not change automatically.

Note: When using a SimpleScrollBar with a scrolling container, the container will automatically set the correct direction value. Generally, you should not need to set this style manually.

In the following example, the direction is changed to vertical:

scrollBar.direction = Direction.VERTICAL;

Note: The Direction.NONE constant is not supported.

The default value is feathers.layout.Direction.HORIZONTAL.

See also

SimpleScrollBar
 InheritedType: starling.display.DisplayObject
If this component supports focus, this optional skin will be displayed above the component when showFocus() is called.

See also

FeathersControl
 InheritedType: Number
Quickly sets all focus padding properties to the same value.

See also

FeathersControl
 InheritedType: Number
The minimum space, in pixels, between the object's bottom edge and the bottom edge of the focus indicator skin.

See also

FeathersControl
 InheritedType: Number
The minimum space, in pixels, between the object's left edge and the left edge of the focus indicator skin.

See also

FeathersControl
 InheritedType: Number
The minimum space, in pixels, between the object's right edge and the right edge of the focus indicator skin.

See also

FeathersControl
 InheritedType: Number
The minimum space, in pixels, between the object's top edge and the top edge of the focus indicator skin.

See also

FeathersControl
  
padding
Type: Number
Quickly sets all padding properties to the same value. The padding getter always returns the value of paddingTop, but the other padding values may be different.

In the following example, the padding is changed to 20 pixels:

scrollBar.padding = 20;
The default value is 0.

See also

SimpleScrollBar
  
paddingBottom
Type: Number
The minimum space, in pixels, below the thumb.

In the following example, the bottom padding is changed to 20 pixels:

scrollBar.paddingBottom = 20;
The default value is 0.

See also

SimpleScrollBar
  
paddingLeft
Type: Number
The minimum space, in pixels, to the left of the thumb.

In the following example, the left padding is changed to 20 pixels:

scrollBar.paddingLeft = 20;
The default value is 0.

See also

SimpleScrollBar
  
paddingRight
Type: Number
The minimum space, in pixels, to the right of the thumb.

In the following example, the right padding is changed to 20 pixels:

scrollBar.paddingRight = 20;
The default value is 0.

See also

SimpleScrollBar
  
paddingTop
Type: Number
The minimum space, in pixels, above the thumb.

In the following example, the top padding is changed to 20 pixels:

scrollBar.paddingTop = 20;
The default value is 0.

See also

SimpleScrollBar
Public Constants
 ConstantDefined By
  DEFAULT_CHILD_STYLE_NAME_THUMB : String = feathers-simple-scroll-bar-thumb
[static] The default value added to the styleNameList of the thumb.
SimpleScrollBar
 InheritedINVALIDATION_FLAG_ALL : String = all
[static] Flag to indicate that everything is invalid and should be redrawn.
FeathersControl
 InheritedINVALIDATION_FLAG_DATA : String = data
[static] Invalidation flag to indicate that the primary data displayed by the UI control has changed.
FeathersControl
 InheritedINVALIDATION_FLAG_FOCUS : String = focus
[static] Invalidation flag to indicate that the focus of the UI control has changed.
FeathersControl
 InheritedINVALIDATION_FLAG_LAYOUT : String = layout
[static] Invalidation flag to indicate that the layout of the UI control has changed.
FeathersControl
 InheritedINVALIDATION_FLAG_SCROLL : String = scroll
[static] Invalidation flag to indicate that the scroll position of the UI control has changed.
FeathersControl
 InheritedINVALIDATION_FLAG_SELECTED : String = selected
[static] Invalidation flag to indicate that the selection of the UI control has changed.
FeathersControl
 InheritedINVALIDATION_FLAG_SIZE : String = size
[static] Invalidation flag to indicate that the dimensions of the UI control have changed.
FeathersControl
 InheritedINVALIDATION_FLAG_SKIN : String = skin
[static] Invalidation flag to indicate that the skin of the UI control has changed.
FeathersControl
 InheritedINVALIDATION_FLAG_STATE : String = state
[static] Invalidation flag to indicate that the state has changed.
FeathersControl
 InheritedINVALIDATION_FLAG_STYLES : String = styles
[static] Invalidation flag to indicate that the styles or visual appearance of the UI control has changed.
FeathersControl
Property Detail
clampToRangeproperty
public var clampToRange:Boolean = false

Determines if the value should be clamped to the range between the minimum and maximum. If false and the value is outside of the range, the thumb will shrink as if the range were increasing.

In the following example, the clamping behavior is updated:

    scrollBar.clampToRange = true;

The default value is false.

globalStyleProviderproperty 
public static var globalStyleProvider:IStyleProvider

The default IStyleProvider for all SimpleScrollBar components.

The default value is null.

See also

liveDraggingproperty 
public var liveDragging:Boolean = true

Determines if the scroll bar dispatches the Event.CHANGE event every time the thumb moves, or only once it stops moving.

In the following example, live dragging is disabled:

    scrollBar.liveDragging = false;

The default value is true.

maximumproperty 
maximum:Number

The maximum numeric value of the range.

In the following example, the maximum is changed to 100:

    component.minimum = 0;
    component.maximum = 100;
    component.step = 1;
    component.page = 10
    component.value = 12;

The default value is 0.


Implementation
    public function get maximum():Number
    public function set maximum(value:Number):void

See also

minimumproperty 
minimum:Number

The minimum numeric value of the range.

In the following example, the minimum is changed to 0:

    component.minimum = 0;
    component.maximum = 100;
    component.step = 1;
    component.page = 10
    component.value = 12;

The default value is 0.


Implementation
    public function get minimum():Number
    public function set minimum(value:Number):void

See also

pageproperty 
page:Number

The amount the scroll bar value must change to get from one "page" to the next.

If this value is 0, the step value will be used instead. If the step value is 0, paging is not possible.

In the following example, the page is changed to 10:

    scrollBar.minimum = 0;
    scrollBar.maximum = 100;
    scrollBar.step = 1;
    scrollBar.page = 10
    scrollBar.value = 12;

The default value is 0.


Implementation
    public function get page():Number
    public function set page(value:Number):void

See also

repeatDelayproperty 
repeatDelay:Number

The time, in seconds, before actions are repeated. The first repeat happens after a delay that is five times longer than the following repeats.

In the following example, the repeat delay is changed to 500 milliseconds:

    scrollBar.repeatDelay = 0.5;

The default value is 0.05.


Implementation
    public function get repeatDelay():Number
    public function set repeatDelay(value:Number):void
stepproperty 
step:Number

The amount the value must change to increment or decrement.

In the following example, the step is changed to 1:

    component.minimum = 0;
    component.maximum = 100;
    component.step = 1;
    component.page = 10
    component.value = 12;

The default value is 0.


Implementation
    public function get step():Number
    public function set step(value:Number):void

See also

thumbproperty 
protected var thumb:DisplayObject

The thumb sub-component.

For internal use in subclasses.

See also

thumbFactoryproperty 
thumbFactory:Function

A function used to generate the scroll bar's thumb sub-component. The thumb must be an instance of BasicButton. This factory can be used to change properties on the thumb when it is first created. For instance, if you are skinning Feathers components without a theme, you might use this factory to set skins and other styles on the thumb.

The function should have the following signature:

function():BasicButton

In the following example, a custom thumb factory is passed to the scroll bar:

    scrollBar.thumbFactory = function():BasicButton
    {
        var thumb:BasicButton = new BasicButton();
        var skin:ImageSkin = new ImageSkin( upTexture );
        skin.setTextureForState( ButtonState.DOWN, downTexture );
        thumb.defaultSkin = skin;
        return thumb;
    };

The default value is null.


Implementation
    public function get thumbFactory():Function
    public function set thumbFactory(value:Function):void

See also

thumbPropertiesproperty 
thumbProperties:Object

An object that stores properties for the scroll bar's thumb, and the properties will be passed down to the thumb when the scroll bar validates. For a list of available properties, refer to feathers.controls.BasicButton.

If the subcomponent has its own subcomponents, their properties can be set too, using attribute @ notation. For example, to set the skin on the thumb which is in a SimpleScrollBar, which is in a List, you can use the following syntax:

list.verticalScrollBarProperties.@thumbProperties.defaultSkin = new Image(texture);

Setting properties in a thumbFactory function instead of using thumbProperties will result in better performance.

In the following example, the scroll bar's thumb properties are updated:

    scrollBar.thumbProperties.defaultSkin = new Image( upTexture );
    scrollBar.thumbProperties.downSkin = new Image( downTexture );

The default value is null.


Implementation
    public function get thumbProperties():Object
    public function set thumbProperties(value:Object):void

See also

thumbStyleNameproperty 
protected var thumbStyleName:String = feathers-simple-scroll-bar-thumb

The value added to the styleNameList of the thumb. This variable is protected so that sub-classes can customize the thumb style name in their constructors instead of using the default style name defined by DEFAULT_CHILD_STYLE_NAME_THUMB.

To customize the thumb style name without subclassing, see customThumbStyleName.

See also

valueproperty 
value:Number

The current numeric value.

In the following example, the value is changed to 12:

    component.minimum = 0;
    component.maximum = 100;
    component.step = 1;
    component.page = 10
    component.value = 12;

The default value is 0.


Implementation
    public function get value():Number
    public function set value(value:Number):void

See also

Constructor Detail
SimpleScrollBar()Constructor
public function SimpleScrollBar()

Constructor.

Method Detail
autoSizeIfNeeded()method
protected function autoSizeIfNeeded():Boolean

If the component's dimensions have not been set explicitly, it will measure its content and determine an ideal size for itself. If the explicitWidth or explicitHeight member variables are set, those value will be used without additional measurement. If one is set, but not the other, the dimension with the explicit value will not be measured, but the other non-explicit dimension will still need measurement.

Calls saveMeasurements() to set up the actualWidth and actualHeight member variables used for layout.

Meant for internal use, and subclasses may override this function with a custom implementation.

Returns
Boolean
createThumb()method 
protected function createThumb():void

Creates and adds the thumb sub-component and removes the old instance, if one exists.

Meant for internal use, and subclasses may override this function with a custom implementation.

See also

Event Detail
beginInteraction Event
Event Object Type: starling.events.Event
Event.type property = feathers.events.FeathersEventType.BEGIN_INTERACTION

Dispatched when the user starts dragging the scroll bar's thumb.

The properties of the event object have the following values:

PropertyValue
bubblesfalse
currentTargetThe 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.
datanull
targetThe 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.

The FeathersEventType.BEGIN_INTERACTION event type is used by many UI controls where a drag or other interaction happens over time. An example is a Slider control where the user touches the thumb to begin dragging.
change Event  
Event Object Type: starling.events.Event
Event.type property = starling.events.Event.CHANGE

Dispatched when the scroll bar's value changes.

The properties of the event object have the following values:

PropertyValue
bubblesfalse
currentTargetThe 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.
datanull
targetThe 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.

An event type to be utilized in custom events. Not used by Starling right now.

See also

endInteraction Event  
Event Object Type: starling.events.Event
Event.type property = feathers.events.FeathersEventType.END_INTERACTION

Dispatched when the user stops dragging the scroll bar's thumb.

The properties of the event object have the following values:

PropertyValue
bubblesfalse
currentTargetThe 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.
datanull
targetThe 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.

The FeathersEventType.END_INTERACTION event type is used by many UI controls where a drag or other interaction happens over time. An example is a Slider control where the user stops touching the thumb after dragging.

Depending on the control, the result of the interaction may continue after the interaction ends. For instance, a Scroller may be "thrown", and the scrolling will continue animating after the user has finished interacting with it.

Constant Detail
DEFAULT_CHILD_STYLE_NAME_THUMBConstant
public static const DEFAULT_CHILD_STYLE_NAME_THUMB:String = feathers-simple-scroll-bar-thumb

The default value added to the styleNameList of the thumb.

See also