Flex 4 Cookbook: Real-world recipes for developing Rich by Joshua Noble, Todd Anderson, Garth Braithwaite, Marco PDF

By Joshua Noble, Todd Anderson, Garth Braithwaite, Marco Casario, Rich Tretola

ISBN-10: 0596805616

ISBN-13: 9780596805616

Flex four Cookbook has hands-on recipes for every little thing from Flex fundamentals to suggestions for operating with visible parts and knowledge entry, in addition to tips about software improvement, unit checking out, and Adobe AIR. each one recipe offers an evidence of the way and why it really works, and comprises pattern code that you should use instantly. you will get effects quickly, no matter if you are a devoted Flex developer or nonetheless comparing the know-how. it is a smart way to jumpstart your subsequent internet software.

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Extra resources for Flex 4 Cookbook: Real-world recipes for developing Rich Internet Applications

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A child element can be accessed from this display list using its elemental index, and the order in which the children are displayed can be manipulated by changing these indexes. info The reference to the first element within the display list of the s:Group is accessed using the getElementAt() method of the content API. The child element is moved from the front of the list to the end, and the order in which all child elements are rendered is updated on the layout.

6 Use Multiple Item Renderers in a DataGroup Problem You want to use more than one type of item renderer for a collection of data items in a DataGroup container. Solution Use the itemRendererFunction property to specify a callback method that will return an item renderer based on the data item. Discussion When working with a collection of data items in a DataGroup container, the itemRen derer and itemRendererFunction properties are used to specify the visual representation of elements. Using the itemRenderer property, instances of a single item renderer class are created and optionally recycled when rendering data elements.

The elemental index corresponds to the order in which a child element is rendered in a layout. Discussion As child elements are added to a container, whether programmatically or declaratively in MXML, references to those elements are stored within an Array. The container’s layout delegate uses that Array to display children. A child element can be accessed from this display list using its elemental index, and the order in which the children are displayed can be manipulated by changing these indexes.

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Flex 4 Cookbook: Real-world recipes for developing Rich Internet Applications by Joshua Noble, Todd Anderson, Garth Braithwaite, Marco Casario, Rich Tretola


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