Package | spark.components.supportClasses |
Class | public class TrackBase |
Inheritance | TrackBase Range SkinnableComponent UIComponent FlexSprite Sprite DisplayObjectContainer InteractiveObject DisplayObject EventDispatcher Object |
Subclasses | ScrollBarBase, SliderBase |
Language Version: | ActionScript 3.0 |
Product Version: | Flex 4 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
thumb
and
track
.
The TrackBase class also provides the code for
dragging the thumb button, which is shared by the Slider and ScrollBar classes.
MXML SyntaxHide MXML SyntaxThe <s:TrackBase>
tag inherits all of the tag
attributes of its superclass and adds the following tag attributes:
<s:TrackBase Styles slideDuration="300" Events change="No default" changing="No default" thumbDrag="No default" thumbPress="No default" thumbRelease="No default" />
See also
spark.components.supportClasses.ScrollBar
Method | Defined By | ||
---|---|---|---|
Constructor. | TrackBase | ||
addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registers an event listener object with an EventDispatcher object so that the listener
receives notification of an event. | EventDispatcher | ||
Indicates whether the security restrictions
would cause any display objects to be omitted from the list returned by calling
the DisplayObjectContainer.getObjectsUnderPoint() method
with the specified point point. | DisplayObjectContainer | ||
Queues a function to be called later. | UIComponent | ||
Increases or decreases value by stepSize. | Range | ||
Deletes a style property from this component instance. | UIComponent | ||
Determines whether the specified display object is a child of the DisplayObjectContainer instance or
the instance itself. | DisplayObjectContainer | ||
Converts a Point object from content coordinates to global coordinates. | UIComponent | ||
Converts a Point object from content to local coordinates. | UIComponent | ||
Returns a set of properties that identify the child within
this container. | UIComponent | ||
Returns a set of properties that identify the child within
this container. | UIComponent | ||
Creates an id reference to this IUIComponent object
on its parent document object. | UIComponent | ||
Deletes the id reference to this IUIComponent object
on its parent document object. | UIComponent | ||
Returns a UITextFormat object corresponding to the text styles
for this UIComponent. | UIComponent | ||
[override]
Dispatches an event into the event flow. | UIComponent | ||
Shows or hides the focus indicator around this component. | UIComponent | ||
drawRoundRect(x:Number, y:Number, w:Number, h:Number, r:Object = null, c:Object = null, alpha:Object = null, rot:Object = null, gradient:String = null, ratios:Array = null, hole:Object = null):void
Programmatically draws a rectangle into this skin's Graphics object. | UIComponent | ||
Called by the effect instance when it stops playing on the component. | UIComponent | ||
Called by the effect instance when it starts playing on the component. | UIComponent | ||
Ends all currently playing effects on the component. | UIComponent | ||
Executes all the bindings for which the UIComponent object is the destination. | UIComponent | ||
Called after printing is complete. | UIComponent | ||
Provides the automation object at the specified index. | UIComponent | ||
Provides the automation object list . | UIComponent | ||
Returns a rectangle that defines the area of the display object relative to the coordinate system
of the targetCoordinateSpace object. | DisplayObject | ||
Returns the x coordinate of the element's bounds at the specified element size. | UIComponent | ||
Returns the y coordinate of the element's bounds at the specified element size. | UIComponent | ||
Returns the child display object that exists with the specified name. | DisplayObjectContainer | ||
Finds the type selectors for this UIComponent instance. | UIComponent | ||
Returns a layout constraint value, which is the same as
getting the constraint style for this component. | UIComponent | ||
A convenience method for determining whether to use the
explicit or measured height
| UIComponent | ||
A convenience method for determining whether to use the
explicit or measured width
| UIComponent | ||
Gets the object that currently has focus. | UIComponent | ||
Returns the element's layout height. | UIComponent | ||
Returns the element's layout width. | UIComponent | ||
Returns the x coordinate that the element uses to draw on screen. | UIComponent | ||
Returns the y coordinate that the element uses to draw on screen. | UIComponent | ||
Returns the transform matrix that is used to calculate the component's
layout relative to its siblings. | UIComponent | ||
Returns the layout transform Matrix3D for this element. | UIComponent | ||
Returns the element's maximum height. | UIComponent | ||
Returns the element's maximum width. | UIComponent | ||
Returns the element's minimum height. | UIComponent | ||
Returns the element's minimum width. | UIComponent | ||
Returns an array of objects that lie under the specified point and are children
(or grandchildren, and so on) of this DisplayObjectContainer instance. | DisplayObjectContainer | ||
Returns the element's preferred height. | UIComponent | ||
Returns the element's preferred width. | UIComponent | ||
Returns a rectangle that defines the boundary of the display object,
based on the coordinate system defined by the targetCoordinateSpace
parameter, excluding any strokes on shapes. | DisplayObject | ||
Returns the item in the dataProvider that was used
by the specified Repeater to produce this Repeater, or
null if this Repeater isn't repeated. | UIComponent | ||
Gets a style property that has been set anywhere in this
component's style lookup chain. | UIComponent | ||
Converts a Point object from global to content coordinates. | UIComponent | ||
Converts the point object from the Stage (global) coordinates
to the display object's (local) coordinates. | DisplayObject | ||
Converts a two-dimensional point from the Stage (global) coordinates to a
three-dimensional display object's (local) coordinates. | DisplayObject | ||
Checks whether the EventDispatcher object has any listeners registered for a specific type
of event. | EventDispatcher | ||
Indicates whether an object has a specified property defined. | Object | ||
Determines whether the specified state has been defined on this
UIComponent. | UIComponent | ||
Evaluates the bounding box of the display object to see if it overlaps or intersects with the
bounding box of the obj display object. | DisplayObject | ||
Evaluates the display object to see if it overlaps or intersects with the
point specified by the x and y parameters. | DisplayObject | ||
Returns a box Matrix which can be passed to the
drawRoundRect() method
as the rot parameter when drawing a horizontal gradient. | UIComponent | ||
Initializes the internal structure of this component. | UIComponent | ||
Initializes various properties which keep track of repeated instances
of this component. | UIComponent | ||
Marks a component so that its updateDisplayList()
method gets called during a later screen update. | UIComponent | ||
Called by a component's items to indicate that their depth
property has changed. | UIComponent | ||
Marks a component so that its commitProperties()
method gets called during a later screen update. | UIComponent | ||
Marks a component so that its measure()
method gets called during a later screen update. | UIComponent | ||
Marks the component so that the new state of the skin is set
during a later screen update. | SkinnableComponent | ||
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | ||
Converts a three-dimensional point of the three-dimensional display
object's (local) coordinates to a two-dimensional point in the Stage (global) coordinates. | DisplayObject | ||
Converts a Point object from local to content coordinates. | UIComponent | ||
Converts the point object from the display object's (local) coordinates to the
Stage (global) coordinates. | DisplayObject | ||
Returns true if cssState matches currentCSSState. | UIComponent | ||
Determines whether this instance is the same as, or is a subclass of,
the given type. | UIComponent | ||
Measures the specified HTML text, which can contain HTML tags such
as <font> and <b>,
assuming that it is displayed
in a single-line UITextField using a UITextFormat
determined by the styles of this UIComponent. | UIComponent | ||
Measures the specified text, assuming that it is displayed
in a single-line UITextField (or UIFTETextField) using a UITextFormat
determined by the styles of this UIComponent. | UIComponent | ||
Moves the component to a specified position within its parent. | UIComponent | ||
Propagates style changes to the children. | UIComponent | ||
Returns true if the chain of owner properties
points from child to this UIComponent. | UIComponent | ||
Called by Flex when a UIComponent object is added to or removed from a parent. | UIComponent | ||
Prepares an IFlexDisplayObject for printing. | UIComponent | ||
Indicates whether the specified property exists and is enumerable. | Object | ||
Builds or rebuilds the CSS style cache for this component
and, if the recursive parameter is true,
for all descendants of this component as well. | UIComponent | ||
For each effect event, registers the EffectManager
as one of the event listeners. | UIComponent | ||
Removes a listener from the EventDispatcher object. | EventDispatcher | ||
Replays the specified event. | UIComponent | ||
Resolves a child by using the id provided. | UIComponent | ||
[static]
Resumes the background processing of methods
queued by callLater(), after a call to
suspendBackgroundProcessing(). | UIComponent | ||
Sizes the object. | UIComponent | ||
Sets a layout constraint value, which is the same as
setting the constraint style for this component. | UIComponent | ||
Set the current state. | UIComponent | ||
Sets the focus to this component. | UIComponent | ||
Sets the coordinates that the element uses to draw on screen. | UIComponent | ||
Sets the layout size of the element. | UIComponent | ||
Sets the transform Matrix that is used to calculate the component's layout
size and position relative to its siblings. | UIComponent | ||
Sets the transform Matrix3D that is used to calculate the component's layout
size and position relative to its siblings. | UIComponent | ||
Sets the availability of a dynamic property for loop operations. | Object | ||
Sets a style property on this component instance. | UIComponent | ||
Called when the visible property changes. | UIComponent | ||
Lets the user drag the specified sprite. | Sprite | ||
Ends the startDrag() method. | Sprite | ||
Detects changes to style properties. | UIComponent | ||
Flex calls the stylesInitialized() method when
the styles for a component are first initialized. | UIComponent | ||
[static]
Blocks the background processing of methods
queued by callLater(),
until resumeBackgroundProcessing() is called. | UIComponent | ||
Returns the string representation of this object, formatted according to locale-specific conventions. | Object | ||
[override]
Returns a string indicating the location of this object
within the hierarchy of DisplayObjects in the Application. | FlexSprite | ||
transformAround(transformCenter:Vector3D, scale:Vector3D = null, rotation:Vector3D = null, translation:Vector3D = null, postLayoutScale:Vector3D = null, postLayoutRotation:Vector3D = null, postLayoutTranslation:Vector3D = null, invalidateLayout:Boolean = true):void
A utility method to update the rotation, scale, and translation of the
transform while keeping a particular point, specified in the component's
own coordinate space, fixed in the parent's coordinate space. | UIComponent | ||
A utility method to transform a point specified in the local
coordinates of this object to its location in the object's parent's
coordinates. | UIComponent | ||
Validates the position and size of children and draws other
visuals. | UIComponent | ||
Validate and update the properties and layout of this object
and redraw it, if necessary. | UIComponent | ||
Used by layout logic to validate the properties of a component
by calling the commitProperties() method. | UIComponent | ||
Validates the measured size of the component
If the LayoutManager.invalidateSize() method is called with
this ILayoutManagerClient, then the validateSize() method
is called when it's time to do measurements. | UIComponent | ||
Handles both the valid and invalid events from a
validator assigned to this component. | UIComponent | ||
Returns the primitive value of the specified object. | Object | ||
Returns a box Matrix which can be passed to drawRoundRect()
as the rot parameter when drawing a vertical gradient. | UIComponent | ||
Checks whether an event listener is registered with this EventDispatcher object or any of
its ancestors for the specified event type. | EventDispatcher |
Method | Defined By | ||
---|---|---|---|
Adjust the focus rectangle. | UIComponent | ||
Commits the computed matrix built from the combination of the layout
matrix and the transform offsets to the flash displayObject's transform. | UIComponent | ||
This is an internal method used by the Flex framework
to support the Dissolve effect. | UIComponent | ||
Create the skin for the component. | SkinnableComponent | ||
Determines if the call to the measure() method can be skipped. | UIComponent | ||
Performs any final processing after child objects are created. | UIComponent | ||
Clear out references to skin parts. | SkinnableComponent | ||
Processes the properties set on the component. | UIComponent | ||
Create child objects of the component. | UIComponent | ||
Create an instance of a dynamic skin part. | SkinnableComponent | ||
Creates a new object using a context
based on the embedded font being used. | UIComponent | ||
Creates the object using a given moduleFactory. | UIComponent | ||
Destroys and removes the skin for this component. | SkinnableComponent | ||
Helper method for dispatching a PropertyChangeEvent
when a property is updated. | UIComponent | ||
Find the skin parts in the skin class and assign them to the properties of the component. | SkinnableComponent | ||
The event handler called when a UIComponent object gets focus. | UIComponent | ||
The event handler called when a UIComponent object loses focus. | UIComponent | ||
Returns the name of the state to be applied to the skin. | SkinnableComponent | ||
Returns a specific instance of a dynamic part. | SkinnableComponent | ||
Initializes the implementation and storage of some of the less frequently
used advanced layout features of a component. | UIComponent | ||
Finalizes the initialization of this component. | UIComponent | ||
Initializes this component's accessibility code. | UIComponent | ||
Helper method to invalidate parent size and display list if
this object affects its layout (includeInLayout is true). | UIComponent | ||
Typically overridden by components containing UITextField objects,
where the UITextField object gets focus. | UIComponent | ||
The event handler called for a keyDown event. | UIComponent | ||
The event handler called for a keyUp event. | UIComponent | ||
Calculates the default size, and optionally the default minimum size,
of the component. | UIComponent | ||
Returns the sum of the minimum with an integer multiple of interval that's
closest to value, unless value is closer to the maximum limit,
in which case the maximum is returned. | Range | ||
Returns the number of instances of a dynamic part. | SkinnableComponent | ||
Called when a skin part is added. | SkinnableComponent | ||
Called when an instance of a skin part is being removed. | SkinnableComponent | ||
Converts a track-relative x,y pixel location into a value between
the minimum and maximum, inclusive. | TrackBase | ||
Remove an instance of a dynamic part. | SkinnableComponent | ||
This method is called when a UIComponent is constructed,
and again whenever the ResourceManager dispatches
a "change" Event to indicate
that the localized resources have changed in some way. | UIComponent | ||
Specifies a transform stretch factor in the horizontal and vertical direction. | UIComponent | ||
Sets the backing store for the value property and
dispatches a valueCommit event if the property changes. | Range | ||
This method is called when a state changes to check whether
state-specific styles apply to this component. | UIComponent | ||
Draws the object and/or sizes and positions its children. | UIComponent | ||
Sets the bounds of skin parts, typically the thumb, whose geometry isn't fully
specified by the skin's layout. | TrackBase |
Event | Summary | Defined By | ||
---|---|---|---|---|
[broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active. | EventDispatcher | |||
Dispatched when the component is added to a container as a content child by using the addChild(), addChildAt(), addElement(), or addElementAt() method. | UIComponent | |||
Dispatched when a display object is added to the display list. | DisplayObject | |||
Dispatched when a display object is added to the on stage display list, either directly or through the addition of a sub tree in which the display object is contained. | DisplayObject | |||
Dispatched when the value of the control changes as a result of user interaction. | TrackBase | |||
Dispatched at the end of a user interaction or when an animation ends. | TrackBase | |||
Dispatched at the start of a user interaction or when an animation starts. | TrackBase | |||
Dispatched when the user selects 'Clear' (or 'Delete') from the text context menu. | InteractiveObject | |||
Dispatched when a user presses and releases the main button of the user's pointing device over the same InteractiveObject. | InteractiveObject | |||
Dispatched when a user gesture triggers the context menu associated with this interactive object in an AIR application. | InteractiveObject | |||
Dispatched when the user activates the platform specific accelerator key combination for a copy operation or selects 'Copy' from the text context menu. | InteractiveObject | |||
Dispatched when the component has finished its construction, property processing, measuring, layout, and drawing. | UIComponent | |||
Dispatched after the view state has changed. | UIComponent | |||
Dispatched after the currentState property changes, but before the view state changes. | UIComponent | |||
Dispatched when the user activates the platform specific accelerator key combination for a cut operation or selects 'Cut' from the text context menu. | InteractiveObject | |||
[broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive. | EventDispatcher | |||
Dispatched when a user presses and releases the main button of a pointing device twice in rapid succession over the same InteractiveObject when that object's doubleClickEnabled flag is set to true. | InteractiveObject | |||
Dispatched by the drag initiator (the component that is the source of the data being dragged) when the drag operation completes, either when you drop the dragged data onto a drop target or when you end the drag-and-drop operation without performing a drop. | UIComponent | |||
Dispatched by the drop target when the user releases the mouse over it. | UIComponent | |||
Dispatched by a component when the user moves the mouse over the component during a drag operation. | UIComponent | |||
Dispatched by the component when the user drags outside the component, but does not drop the data onto the target. | UIComponent | |||
Dispatched by a component when the user moves the mouse while over the component during a drag operation. | UIComponent | |||
Dispatched by the drag initiator when starting a drag operation. | UIComponent | |||
Dispatched after an effect ends. | UIComponent | |||
Dispatched just before an effect starts. | UIComponent | |||
Dispatched after an effect is stopped, which happens only by a call to stop() on the effect. | UIComponent | |||
[broadcast event] Dispatched when the playhead is entering a new frame. | DisplayObject | |||
Dispatched after the component has entered a view state. | UIComponent | |||
[broadcast event] Dispatched when the playhead is exiting the current frame. | DisplayObject | |||
Dispatched just before the component exits a view state. | UIComponent | |||
Dispatched after a display object gains focus. | InteractiveObject | |||
Dispatched after a display object loses focus. | InteractiveObject | |||
[broadcast event] Dispatched after the constructors of frame display objects have run but before frame scripts have run. | DisplayObject | |||
Dispatched when an object's state changes from visible to invisible. | UIComponent | |||
Dispatched when the component has finished its construction and has all initialization properties set. | UIComponent | |||
Dispatched when a component is monitored by a Validator and the validation failed. | UIComponent | |||
Dispatched when the user presses a key. | InteractiveObject | |||
Dispatched when the user attempts to change focus by using keyboard navigation. | InteractiveObject | |||
Dispatched when the user releases a key. | InteractiveObject | |||
Dispatched when a user presses and releases the middle button of the user's pointing device over the same InteractiveObject. | InteractiveObject | |||
Dispatched when a user presses the middle pointing device button over an InteractiveObject instance. | InteractiveObject | |||
Dispatched when a user releases the pointing device button over an InteractiveObject instance. | InteractiveObject | |||
Dispatched when a user presses the pointing device button over an InteractiveObject instance. | InteractiveObject | |||
Dispatched from a component opened using the PopUpManager when the user clicks outside it. | UIComponent | |||
Dispatched when the user attempts to change focus by using a pointer device. | InteractiveObject | |||
Dispatched when a user moves the pointing device while it is over an InteractiveObject. | InteractiveObject | |||
Dispatched when the user moves a pointing device away from an InteractiveObject instance. | InteractiveObject | |||
Dispatched when the user moves a pointing device over an InteractiveObject instance. | InteractiveObject | |||
Dispatched when a user releases the pointing device button over an InteractiveObject instance. | InteractiveObject | |||
Dispatched when a mouse wheel is spun over an InteractiveObject instance. | InteractiveObject | |||
Dispatched from a component opened using the PopUpManager when the user scrolls the mouse wheel outside it. | UIComponent | |||
Dispatched when the object has moved. | UIComponent | |||
Dispatched by the drag initiator InteractiveObject when the user releases the drag gesture. | InteractiveObject | |||
Dispatched by the target InteractiveObject when a dragged object is dropped on it and the drop has been accepted with a call to DragManager.acceptDragDrop(). | InteractiveObject | |||
Dispatched by an InteractiveObject when a drag gesture enters its boundary. | InteractiveObject | |||
Dispatched by an InteractiveObject when a drag gesture leaves its boundary. | InteractiveObject | |||
Dispatched by an InteractiveObject continually while a drag gesture remains within its boundary. | InteractiveObject | |||
Dispatched at the beginning of a drag operation by the InteractiveObject that is specified as the drag initiator in the DragManager.doDrag() call. | InteractiveObject | |||
Dispatched during a drag operation by the InteractiveObject that is specified as the drag initiator in the DragManager.doDrag() call. | InteractiveObject | |||
Dispatched when the user activates the platform specific accelerator key combination for a paste operation or selects 'Paste' from the text context menu. | InteractiveObject | |||
Dispatched at the beginning of the component initialization sequence. | UIComponent | |||
Dispatched when the component is removed from a container as a content child by using the removeChild(), removeChildAt(), removeElement(), or removeElementAt() method. | UIComponent | |||
Dispatched when a display object is about to be removed from the display list. | DisplayObject | |||
Dispatched when a display object is about to be removed from the display list, either directly or through the removal of a sub tree in which the display object is contained. | DisplayObject | |||
[broadcast event] Dispatched when the display list is about to be updated and rendered. | DisplayObject | |||
Dispatched when the component is resized. | UIComponent | |||
Dispatched when a user presses and releases the right button of the user's pointing device over the same InteractiveObject. | InteractiveObject | |||
Dispatched when a user presses the pointing device button over an InteractiveObject instance. | InteractiveObject | |||
Dispatched when a user releases the pointing device button over an InteractiveObject instance. | InteractiveObject | |||
Dispatched when the user moves a pointing device away from an InteractiveObject instance. | InteractiveObject | |||
Dispatched when the user moves a pointing device over an InteractiveObject instance. | InteractiveObject | |||
Dispatched when the user activates the platform specific accelerator key combination for a select all operation or selects 'Select All' from the text context menu. | InteractiveObject | |||
Dispatched when an object's state changes from invisible to visible. | UIComponent | |||
Dispatched when the value of the object's tabChildren flag changes. | InteractiveObject | |||
Dispatched when the object's tabEnabled flag changes. | InteractiveObject | |||
Dispatched when the value of the object's tabIndex property changes. | InteractiveObject | |||
Dispatched when a user enters one or more characters of text. | InteractiveObject | |||
Dispatched when the thumb is pressed and then moved by the mouse. | TrackBase | |||
Dispatched when the thumb is pressed, meaning the user presses the mouse button over the thumb. | TrackBase | |||
Dispatched when the thumb is released, meaning the user releases the mouse button after a thumbPress event. | TrackBase | |||
Dispatched by the component when it is time to create a ToolTip. | UIComponent | |||
Dispatched by the component when its ToolTip has been hidden and is to be discarded soon. | UIComponent | |||
Dispatched by the component when its ToolTip is about to be hidden. | UIComponent | |||
Dispatched by the component when its ToolTip is about to be shown. | UIComponent | |||
Dispatched by the component when its ToolTip has been shown. | UIComponent | |||
Dispatched by a component whose toolTip property is set, as soon as the user moves the mouse over it. | UIComponent | |||
Dispatched when an object has had its commitProperties(), measure(), and updateDisplayList() methods called (if needed). | UIComponent | |||
Dispatched when a component is monitored by a Validator and the validation succeeded. | UIComponent | |||
Dispatched when values are changed programmatically or by user interaction. | UIComponent |
Styles are either common or associated with a specific theme. If the style is common, it can be used with any theme. If a style is associated with a specific theme, it can only be used if your application uses that theme.
Style | Description | Defined By | ||
---|---|---|---|---|
Type: String CSS Inheritance: no The vertical distance in pixels from the top edge of the content area to the control's baseline position. | UIComponent | |||
Type: String CSS Inheritance: no The vertical distance, in pixels, from the bottom edge of the component to the bottom edge of its parent container's content area. | UIComponent | |||
Type: Class Name of the skin class to use for this component when a validation error occurs. | SkinnableComponent | |||
Type: String CSS Inheritance: no Blend mode used by the focus rectangle. | UIComponent | |||
Type: Class CSS Inheritance: no Skin used to draw the focus rectangle. | UIComponent | |||
Type: Number Format: Length CSS Inheritance: no Thickness, in pixels, of the focus rectangle outline. | UIComponent | |||
Type: String CSS Inheritance: no The horizontal distance in pixels from the center of the component's content area to the center of the component. | UIComponent | |||
Type: String CSS Inheritance: no The horizontal distance, in pixels, from the left edge of the component to the left edge of its parent container's content area. | UIComponent | |||
Type: String CSS Inheritance: no The horizontal distance, in pixels, from the right edge of the component to the right edge of its parent container's content area. | UIComponent | |||
Type: Class Name of the skin class to use for this component. | SkinnableComponent | |||
slideDuration | Type: Number Format: Time CSS Inheritance: no Duration in milliseconds for a sliding animation when you click on the track to move a thumb. This style is used for both Sliders and Scrollbars. For Sliders, any click on the track will cause an animation using this style, as the thumb will move to the clicked position. For ScrollBars, this style is used only when shift-clicking on the track, which causes the thumb to move to the clicked position. Clicking on a ScrollBar track when the shift key is not pressed will result in paging behavior instead. The smoothScrolling style must also be set on the
ScrollBar to get animated behavior when shift-clicking.
This duration is for an animation that covers the entire distance of the track; smaller distances will use a proportionally smaller duration. The default value is 300 . | TrackBase | ||
Type: String CSS Inheritance: no The vertical distance, in pixels, from the top edge of the component to the top edge of its parent container's content area. | UIComponent | |||
Type: String CSS Inheritance: no The vertical distance in pixels from the center of the component's content area to the center of the component. | UIComponent |
This component uses skins made up of skin parts. Do not set the skin parts directly. The component's skin sets the skin parts.
Skin Part | Description | Defined By | ||
---|---|---|---|---|
thumb:Button | Required: false Part Type: Static A skin part that defines a button that can be dragged along the track to increase or decrease the value property. Updates to the value property automatically update the position of the thumb button with respect to the track. | TrackBase | ||
track:Button | Required: false Part Type: Static A skin part that defines a button that, when pressed, sets the value property to the value corresponding with the current button position on the track. | TrackBase |
To skin the component, implement a skin that defines the following states. Although you must implement all skin states, a skin state can be empty. An empty skin state specifies no changes to the default skin state.
Skin State | Description | Defined By | ||
---|---|---|---|---|
disabled | Disabled State | TrackBase | ||
normal | Normal State | TrackBase |
TrackBase | () | Constructor |
public function TrackBase()
Language Version: | ActionScript 3.0 |
Product Version: | Flex 4 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Constructor.
pointToValue | () | method |
protected function pointToValue(x:Number, y:Number):Number
Language Version: | ActionScript 3.0 |
Product Version: | Flex 4 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Converts a track-relative x,y pixel location into a value between the minimum and maximum, inclusive.
TrackBase subclasses must override this method and perform conversions that take their own geometry into account. For example, a vertical slider might compute a value like this:
return (y / track.height) (maximum - minimum);
By default, this method returns minimum
.
Parameters
x:Number — The x coordinate of the location relative to the track's origin.
| |
y:Number — The y coordinate of the location relative to the track's origin.
|
Number — A value between the minimum and maximum, inclusive.
|
updateSkinDisplayList | () | method |
protected function updateSkinDisplayList():void
Language Version: | ActionScript 3.0 |
Product Version: | Flex 4 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Sets the bounds of skin parts, typically the thumb, whose geometry isn't fully specified by the skin's layout.
Most subclasses override this method to update the thumb's size, position, and
visibility, based on the minimum
, maximum
, and value
properties.
By default, this method does nothing.
change | Event |
flash.events.Event
property Event.type =
flash.events.Event.CHANGE
Language Version: | ActionScript 3.0 |
Product Version: | Flex 4 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Dispatched when the value of the control changes as a result of user interaction.
TheEvent.CHANGE
constant defines the value of the type
property of a change
event object.
This event has the following properties:
Property | Value |
---|---|
bubbles | true |
cancelable | false ; there is no default behavior to cancel. |
currentTarget | The object that is actively processing the Event object with an event listener. |
target | The object that has had its value modified.
The target is not always the object in the display list
that registered the event listener. Use the currentTarget
property to access the object in the display list that is currently processing the event. |
changeEnd | Event |
mx.events.FlexEvent
property FlexEvent.type =
mx.events.FlexEvent.CHANGE_END
Language Version: | ActionScript 3.0 |
Product Version: | Flex 4 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Dispatched at the end of a user interaction or when an animation ends.
TheFlexEvent.CHANGE_END
constant defines the value of the
type
property of the event object for a changeEnd
event.
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 . |
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. |
changeStart | Event |
mx.events.FlexEvent
property FlexEvent.type =
mx.events.FlexEvent.CHANGE_START
Language Version: | ActionScript 3.0 |
Product Version: | Flex 4 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Dispatched at the start of a user interaction or when an animation starts.
TheFlexEvent.CHANGE_START
constant defines the value of the
type
property of the event object for a changeStart
event.
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 . |
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. |
thumbDrag | Event |
spark.events.TrackBaseEvent
property TrackBaseEvent.type =
spark.events.TrackBaseEvent.THUMB_DRAG
Language Version: | ActionScript 3.0 |
Product Version: | Flex 4 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Dispatched when the thumb is pressed and then moved by the mouse.
This event is always preceded by a thumbPress
event.
TrackBaseEvent.THUMB_DRAG
constant defines the value of the
type
property of the event object for a thumbDrag
event.
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 . |
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. |
thumbPress | Event |
spark.events.TrackBaseEvent
property TrackBaseEvent.type =
spark.events.TrackBaseEvent.THUMB_PRESS
Language Version: | ActionScript 3.0 |
Product Version: | Flex 4 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Dispatched when the thumb is pressed, meaning the user presses the mouse button over the thumb.
TheTrackBaseEvent.THUMB_PRESS
constant defines the value of the
type
property of the event object for a thumbPress
event.
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 . |
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. |
thumbRelease | Event |
spark.events.TrackBaseEvent
property TrackBaseEvent.type =
spark.events.TrackBaseEvent.THUMB_RELEASE
Language Version: | ActionScript 3.0 |
Product Version: | Flex 4 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Dispatched when the thumb is released,
meaning the user releases the mouse button after
a thumbPress
event.
TrackBaseEvent.THUMB_RELEASE
constant defines the value of the
type
property of the event object for a thumbRelease
event.
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 . |
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. |
Fri Mar 19 2010, 02:45 AM -07:00