mx.controls.listClasses

# IListItemRenderer - AS3 Flex

Package | mx.controls.listClasses
Interface | public interface IListItemRenderer extends IDataRenderer , IEventDispatcher , IFlexDisplayObject , ILayoutManagerClient , ISimpleStyleClient , IUIComponent , IBitmapDrawable
Implementors | AdvancedDataGridGroupItemRenderer, AdvancedDataGridHeaderRenderer, AdvancedDataGridItemRenderer, AdvancedListBase, Button, ComboBox, Container, DataGridItemRenderer, DateField, FTEAdvancedDataGridItemRenderer, FTEDataGridItemRenderer, HTML, Image, Label, ListBase, ListItemRenderer, MXAdvancedDataGridItemRenderer, MXItemRenderer, MenuItemRenderer, NumericStepper, OLAPDataGridGroupRenderer, TextArea, TileListItemRenderer, TreeItemRenderer

Language Version: | ActionScript 3.0

Product Version: | Flex 3

Runtime Versions: | Flash Player 9, AIR 1.1

Item renderers and item editors for list components must implement the IListItemRenderer interface. The IListItemRenderer interface is a set of several other interfaces. It does not define any new class methods or properties.

The set of interfaces includes the following: IDataRenderer, IFlexDisplayObject, ILayoutManagerClient, ISimpleStyleClient, IUIComponent. The UIComponent class implements all of these interfaces, except the IDataRenderer interface. Therefore, if you create a custom item renderer or item editor as a subclass of the UIComponent class, you only have to implement the IDataRenderer interface and then you can add to the class definition that the class implements IDataRenderer and IListItemRenderer.

IListItemRenderers are generally dedicated to displaying a particular field from the data provider item and cannot be re-used in other DataGrid columns or in other lists with different fields. If you want to create a renderer that can be re-used you can also implement IDropInListItemRenderer, and the list will pass more data to the renderer that allows the renderer to be re-used with different data fields.

Item renderers and item editors are passed data from a list class' data provider using the IDataRenderer interface. Renderers and editors that implement the IDropInListItemRenderer interface get other information from the list class. The item renderer or item editor uses one or both pieces of information to display the data.

The renderers and editors are often recycled. Once they are created, they may be used again simply by being given a new data and optional `listData` property. Therefore in your implementation you must make sure that component properties are not assumed to contain their initial, or default values.

Public Properties
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| Property | Defined By
--- | --- | ---
|  | accessibilityProperties : AccessibilityProperties The current accessibility options for this display object. | IFlexDisplayObject
|  | alpha : Number Indicates the alpha transparency value of the object specified. | IFlexDisplayObject
|  | baselinePosition : Number [read-only] The y-coordinate of the baseline of the first line of text of the component. | IUIComponent
|  | blendMode : String A value from the BlendMode class that specifies which blend mode to use. | IFlexDisplayObject
|  | cacheAsBitmap : Boolean If set to true, Flash runtimes cache an internal bitmap representation of the display object. | IFlexDisplayObject
|  | data : Object The data to render or edit. | IDataRenderer
|  | document : Object A reference to the document object associated with this component. | IUIComponent
|  | enabled : Boolean Whether the component can accept user interaction. | IUIComponent
|  | explicitHeight : Number The explicitly specified height for the component, in pixels, as the component's coordinates. | IUIComponent
|  | explicitMaxHeight : Number [read-only] Number that specifies the maximum height of the component, in pixels, as the component's coordinates. | IUIComponent
|  | explicitMaxWidth : Number [read-only] Number that specifies the maximum width of the component, in pixels, as the component's coordinates. | IUIComponent
|  | explicitMinHeight : Number [read-only] Number that specifies the minimum height of the component, in pixels, as the component's coordinates. | IUIComponent
|  | explicitMinWidth : Number [read-only] Number that specifies the minimum width of the component, in pixels, as the component's coordinates. | IUIComponent
|  | explicitWidth : Number The explicitly specified width for the component, in pixels, as the component's coordinates. | IUIComponent
|  | filters : Array An indexed array that contains each filter object currently associated with the display object. | IFlexDisplayObject
|  | focusPane : Sprite A single Sprite object that is shared among components and used as an overlay for drawing the focus indicator. | IUIComponent
|  | height : Number Indicates the height of the display object, in pixels. | IFlexDisplayObject
|  | includeInLayout : Boolean Specifies whether this component is included in the layout of the parent container. | IUIComponent
|  | initialized : Boolean A flag that determines if an object has been through all three phases of layout validation (provided that any were required) This flag should only be modified by the LayoutManager. | ILayoutManagerClient
|  | isPopUp : Boolean Set to true by the PopUpManager to indicate that component has been popped up. | IUIComponent
|  | loaderInfo : LoaderInfo [read-only] Returns a LoaderInfo object containing information about loading the file to which this display object belongs. | IFlexDisplayObject
|  | mask : DisplayObject The calling display object is masked by the specified mask object. | IFlexDisplayObject
|  | maxHeight : Number [read-only] Number that specifies the maximum height of the component, in pixels, as the component's coordinates. | IUIComponent
|  | maxWidth : Number [read-only] Number that specifies the maximum width of the component, in pixels, as the component's coordinates. | IUIComponent
|  | measuredHeight : Number [read-only] The measured height of this object. | IFlexDisplayObject
|  | measuredMinHeight : Number The default minimum height of the component, in pixels. | IUIComponent
|  | measuredMinWidth : Number The default minimum width of the component, in pixels. | IUIComponent
|  | measuredWidth : Number [read-only] The measured width of this object. | IFlexDisplayObject
|  | minHeight : Number [read-only] Number that specifies the minimum height of the component, in pixels, as the component's coordinates. | IUIComponent
|  | minWidth : Number [read-only] Number that specifies the minimum width of the component, in pixels, as the component's coordinates. | IUIComponent
|  | mouseX : Number [read-only] Indicates the x coordinate of the mouse or user input device position, in pixels. | IFlexDisplayObject
|  | mouseY : Number [read-only] Indicates the y coordinate of the mouse or user input device position, in pixels. | IFlexDisplayObject
|  | name : String Indicates the instance name of the DisplayObject. | IFlexDisplayObject
|  | nestLevel : int The top-level SystemManager has a nestLevel of 1. | ILayoutManagerClient
|  | opaqueBackground : Object Specifies whether the display object is opaque with a certain background color. | IFlexDisplayObject
|  | owner : DisplayObjectContainer The owner of this IVisualElement object. | IUIComponent
|  | parent : DisplayObjectContainer [read-only] Indicates the DisplayObjectContainer object that contains this display object. | IFlexDisplayObject
|  | percentHeight : Number Number that specifies the height of a component as a percentage of its parent's size. | IUIComponent
|  | percentWidth : Number Number that specifies the width of a component as a percentage of its parent's size. | IUIComponent
|  | processedDescriptors : Boolean Set to true after immediate or deferred child creation, depending on which one happens. | ILayoutManagerClient
|  | root : DisplayObject [read-only] For a display object in a loaded SWF file, the root property is the top-most display object in the portion of the display list's tree structure represented by that SWF file. | IFlexDisplayObject
|  | rotation : Number Indicates the rotation of the DisplayObject instance, in degrees, from its original orientation. | IFlexDisplayObject
|  | scale9Grid : Rectangle The current scaling grid that is in effect. | IFlexDisplayObject
|  | scaleX : Number Indicates the horizontal scale (percentage) of the object as applied from the registration point. | IFlexDisplayObject
|  | scaleY : Number Indicates the vertical scale (percentage) of an object as applied from the registration point of the object. | IFlexDisplayObject
|  | scrollRect : Rectangle The scroll rectangle bounds of the display object. | IFlexDisplayObject
|  | stage : Stage [read-only] The Stage of the display object. | IFlexDisplayObject
|  | styleName : Object The source of this object's style values. | ISimpleStyleClient
|  | systemManager : ISystemManager A reference to the SystemManager object for this component. | IUIComponent
|  | transform : flash.geom:Transform An object with properties pertaining to a display object's matrix, color transform, and pixel bounds. | IFlexDisplayObject
|  | tweeningProperties : Array Used by EffectManager. | IUIComponent
|  | updateCompletePendingFlag : Boolean A flag that determines if an object is waiting to have its updateComplete event dispatched. | ILayoutManagerClient
|  | visible : Boolean Whether or not the display object is visible. | IFlexDisplayObject
|  | width : Number Indicates the width of the display object, in pixels. | IFlexDisplayObject
|  | x : Number Indicates the x coordinate of the DisplayObject instance relative to the local coordinates of the parent DisplayObjectContainer. | IFlexDisplayObject
|  | y : Number Indicates the y coordinate of the DisplayObject instance relative to the local coordinates of the parent DisplayObjectContainer. | IFlexDisplayObject

Public Methods
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| Method | Defined By
--- | --- | ---
|  | 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. | IEventDispatcher
|  | dispatchEvent(event:Event):Boolean Dispatches an event into the event flow. | IEventDispatcher
|  | getBounds(targetCoordinateSpace:DisplayObject):Rectangle Returns a rectangle that defines the area of the display object relative to the coordinate system of the targetCoordinateSpace object. | IFlexDisplayObject
|  | getExplicitOrMeasuredHeight():Number A convenience method for determining whether to use the explicit or measured height | IUIComponent
|  | getExplicitOrMeasuredWidth():Number A convenience method for determining whether to use the explicit or measured width | IUIComponent
|  | getRect(targetCoordinateSpace:DisplayObject):Rectangle 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. | IFlexDisplayObject
|  | globalToLocal(point:Point):Point Converts the point object from the Stage (global) coordinates to the display object's (local) coordinates. | IFlexDisplayObject
|  | hasEventListener(type:String):Boolean Checks whether the EventDispatcher object has any listeners registered for a specific type of event. | IEventDispatcher
|  | hitTestObject(obj:DisplayObject):Boolean Evaluates the bounding box of the display object to see if it overlaps or intersects with the bounding box of the obj display object. | IFlexDisplayObject
|  | hitTestPoint(x:Number, y:Number, shapeFlag:Boolean = false):Boolean Evaluates the display object to see if it overlaps or intersects with the point specified by the x and y parameters. | IFlexDisplayObject
|  | initialize():void Initialize the object. | IUIComponent
|  | localToGlobal(point:Point):Point Converts the point object from the display object's (local) coordinates to the Stage (global) coordinates. | IFlexDisplayObject
|  | move(x:Number, y:Number):void Moves this object to the specified x and y coordinates. | IFlexDisplayObject
|  | owns(displayObject:DisplayObject):Boolean Returns true if the chain of owner properties points from child to this UIComponent. | IUIComponent
|  | parentChanged(p:DisplayObjectContainer):void Called by Flex when a UIComponent object is added to or removed from a parent. | IUIComponent
|  | removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Removes a listener from the EventDispatcher object. | IEventDispatcher
|  | setActualSize(newWidth:Number, newHeight:Number):void Sets the actual size of this object. | IFlexDisplayObject
|  | setVisible(value:Boolean, noEvent:Boolean = false):void Called when the visible property changes. | IUIComponent
|  | styleChanged(styleProp:String):void Called when the value of a style property is changed. | ISimpleStyleClient
|  | validateDisplayList():void Validates the position and size of children and draws other visuals. | ILayoutManagerClient
|  | validateProperties():void Validates the properties of a component. | ILayoutManagerClient
|  | validateSize(recursive:Boolean = false):void 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. | ILayoutManagerClient
|  | willTrigger(type:String):Boolean Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type. | IEventDispatcher

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Mon Apr 10 2017, 12:28 PM -07:00