ADOBE® FLEX® 3: CREATING AND EXTENDING ADOBE FLEX 3 COMPONENTS

221ADOBE FLEX 3

Creating and Extending Adobe Flex 3 Components

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This example uses the Effect.filter property to filter possible effect targets. Because you set the filter

property of the first Blur effect to

removeItem, Flex only applies the effect to items added to the list control.

Because the Move effect omits the

filter property, Flex applies the effect to all items in the control.

You can create a custom filter by passing an instance of the EffectTargetFiler class to the

Effect.customFilter

property. For example, the

Effect.filter property lets you specify only a single value, such as addItem or

removeItem. However, you can ...