Displays a control consisting of a TextInput and Button that allows an item from a collection to be selected. When the button is triggered, a list box of items is displayed as a pop-up. The text input allows filtering, or (optionally) choosing custom items.

The following example creates a ComboBox, gives it a data provider, tells the item renderer how to interpret the data, and listens for when the selection changes:

var comboBox = new ComboBox();

comboBox.dataProvider = new ArrayCollection(
[
	{ text: "Milk" },
	{ text: "Eggs" },
	{ text: "Bread" },
	{ text: "Steak" },
]);

comboBox.itemToText = (item:Dynamic) ->
{
	return item.text;
};

comboBox.addEventListener(Event.CHANGE, (event:Event) ->
{
	var comboBox = cast(event.currentTarget, ComboBox);
	trace("ComboBox changed: " + comboBox.selectedIndex + " " + comboBox.selectedItem.text);
});

this.addChild(comboBox);
Available since

1.0.0

.

See:

Constructor

new ()

Creates a new ComboBox object.

Available since

1.0.0

.

Variables

@:value(null)dataProvider:IFlatCollection<Dynamic> = null

The collection of data displayed by the list.

The following example passes in a data provider and tells the item renderer how to interpret the data:

comboBox.dataProvider = new ArrayCollection(
[
	{ text: "Milk" },
	{ text: "Eggs" },
	{ text: "Bread" },
	{ text: "Chicken" },
]);

comboBox.itemToText = (item:Dynamic) ->
{
	return item.text;
};
Available since

1.0.0

.

See:

@:value(DisplayObjectRecycler.withClass(ItemRenderer))itemRendererRecycler:DisplayObjectRecycler<Dynamic, ListViewItemState, DisplayObject> = DisplayObjectRecycler.withClass(ItemRenderer)

Manages item renderers used by the list view.

In the following example, the pop-up list view uses a custom item renderer class:

comboBox.itemRendererRecycler = DisplayObjectRecycler.withClass(CustomItemRenderer);
Available since

1.0.0

.

read onlyopen:Bool

Indicates if the pop-up list is open or closed.

Available since

1.0.0

.

See:

@:value(new DropDownPopUpAdapter())@:stylepopUpAdapter:IPopUpAdapter = new DropDownPopUpAdapter()

Manages how the pop-up list is displayed when it is opened and closed.

In the following example, a custom pop-up adapter is provided:

comboBox.popUpAdapter = new DropDownPopUpAdapter();
Available since

1.0.0

.

@:value(null)@:isVarselectedItem:Dynamic = null

Methods

closeList ():Void

Closes the pop-up list, if it is open.

The following example closes the pop-up list:

if(comboBox.open)
{
	comboBox.closeList();
}
Available since

1.0.0

.

See:

dynamicitemToText (data:Dynamic):String

Converts an item to text to display within the pop-up ListView, or within the Button, if the item is selected. By default, the toString() method is called to convert an item to text. This method may be replaced to provide custom text.

For example, consider the following item:

{ text: "Example Item" }

If the ListView should display the text "Example Item", a custom implementation of itemToText() might look like this:

comboBox.itemToText = (item:Dynamic) ->
{
	return item.text;
};
Available since

1.0.0

.

openList ():Void

Opens the pop-up list, if it is not already open.

The following example opens the pop-up list:

if(!comboBox.open)
{
	comboBox.openList();
}
Available since

1.0.0

.

See:

Static variables

@:value("comboBox_button")staticread onlyCHILD_VARIANT_BUTTON:String = "comboBox_button"

The variant used to style the Button child component in a theme.

See:

@:value("comboBox_listView")staticread onlyCHILD_VARIANT_LIST_VIEW:String = "comboBox_listView"

The variant used to style the ListView child component in a theme.

See:

@:value("comboBox_textInput")staticread onlyCHILD_VARIANT_TEXT_INPUT:String = "comboBox_textInput"

The variant used to style the TextInput child component in a theme.

See:

Inherited Variables

Defined by FeathersControl

@:value(false)read onlycreated:Bool = false

Determines if the component has been initialized and validated for the first time.

In the following example, we check if the component is created or not, and we listen for an event if it isn't:

if(!control.created)
{
	control.addEventListener(FeathersEventType.CREATION_COMPLETE, creationCompleteHandler);
}

See:

@:value(true)@:isVarenabled:Bool = true

@:value(false)read onlyinitialized:Bool = false

Determines if the component has been initialized yet. The initialize() function is called one time only, when the Feathers UI control is added to the display list for the first time.

In the following example, we check if the component is initialized or not, and we listen for an event if it isn't initialized:

if(!control.initialized)
{
	control.addEventListener(FeathersEvent.INITIALIZE, initializeHandler);
}
Available since

1.0.0

.

See:

read onlystyleContext:Class<IStyleObject>

The class used as the context for styling the component. If a subclass of a component should have different styles than its superclass, it should override the get_styleContext getter. However, if a subclass should continue using the same styles as its superclass, it happens automatically.

Available since

1.0.0

.

styleProvider:IStyleProvider

When a component initializes, a style provider may be used to set properties that affect the component's visual appearance.

You can set or replace an existing style provider at any time before a component initializes without immediately affecting the component's visual appearance. After the component initializes, the style provider may still be changed, and any properties that were set by the previous style provider will be reset to their default values before applying the new style provider.

Available since

1.0.0

.

See:

@:value(null)variant:String = null

May be used to provide multiple different variations of the same UI component, each with a different appearance.

Available since

1.0.0

.

Defined by MeasureSprite

@:value(null)@:isVarexplicitHeight:Null<Float> = null

@:value(null)@:isVarexplicitMaxHeight:Null<Float> = null

@:value(null)@:isVarexplicitMaxWidth:Null<Float> = null

@:value(null)@:isVarexplicitMinHeight:Null<Float> = null

@:value(null)@:isVarexplicitMinWidth:Null<Float> = null

@:value(null)@:isVarexplicitWidth:Null<Float> = null

Defined by ValidatingSprite

@:value(-1)read onlydepth:Int = -1

Inherited Methods

Defined by FeathersControl

private@:dox(show)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. Do things like create children and set up event listeners. After this function is called, Event.INIT is dispatched.

The following example overrides initialization:

override private function initialize():Void {
	super.initialize();

}
Available since

1.0.0

.

move (x:Float, y:Float):Void

Sets both the x and y positions of the control in a single function call.

Available since

1.0.0

.

See:

DisplayObject.x

DisplayObject.y

setSize (width:Float, height:Float):Void

Sets both the width and height dimensions of the control in a single function call.

Available since

1.0.0

.

See:

DisplayObject.width

DisplayObject.height

private@:dox(show)setStyle (styleName:String, ?state:EnumValue):Bool

Determines if a style may be changed, and restricts the style from being changed in the future, if necessary.

Available since

1.0.0

.

Defined by MeasureSprite

private@:value({ minHeight : 0.0, minWidth : 0.0 })@:dox(show)saveMeasurements (width:Float, height:Float, minWidth:Float = 0.0, minHeight:Float = 0.0, ?maxWidth:Float, ?maxHeight:Float):Bool

Saves the calculated dimensions for the component, replacing any values that haven't been set explicitly. Returns true if the reported values have changed and Event.RESIZE was dispatched.

Available since

1.0.0

.

Defined by ValidatingSprite

@:value({ flag : null })isInvalid (?flag:String):Bool

Indicates whether the control is pending validation or not. By default, returns true if any invalidation flag has been set. If you pass in a specific flag, returns true only if that flag has been set (others may be set too, but it checks the specific flag only. If all flags have been marked as invalid, always returns true.

The following example invalidates a component:

component.setInvalid();
trace(component.isInvalid()); // true
Available since

1.0.0

.

@:value({ flag : null })setInvalid (?flag:String):Void

Call this function to tell the UI control that a redraw is pending. The redraw will happen immediately before OpenFL renders the UI control to the screen. The validation system exists to ensure that multiple properties can be set together without redrawing multiple times in between each property change.

If you cannot wait until later for the validation to happen, you can call validate() to redraw immediately. As an example, you might want to validate immediately if you need to access the correct width or height values of the UI control, since these values are calculated during validation.

The following example invalidates a component:

component.setInvalid();
trace(component.isInvalid()); // true
Available since

1.0.0

.

private@:dox(show)setInvalidationFlag (flag:String):Void

Sets an invalidation flag. This will not add the component to the validation queue. It only sets the flag. A subclass might use this function during draw() to manipulate the flags that its superclass sees.

Available since

1.0.0

.

See:

private@:dox(show)update ():Void

Override to customize layout and to adjust properties of children. Called when the component validates, if any flags have been marked to indicate that validation is pending.

The following example overrides updating after invalidation:

override private function update():Void {
	super.update();

}
Available since

1.0.0

.