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Flex 4 in Action: Revised Edition of Flex 3 in Action by Tariq Ahmed and Dan Orlando, with John C. Bland II and Joel Hooks

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Chapter 22. Drag-and-drop

This chapter covers

  • Controlling when dragging and dropping is allowed
  • Supporting a multi-item drag-and-drop operation
  • Building custom drag-and-drop functionality
  • Customizing the drag-and-drop experience

When Flex first came out, drag-and-drop (D&D) set the tone as a key feature, showcasing what Flex-based RIAs were capable of providing with minimal integration effort. From a developer’s perspective, Flex’s D&D feature is easy to implement because many native components provide a built-in mechanism to support it. At the same time, you can hook into and override any of the default behavior throughout the stages of the process.

In this book, we want to show you not just how to do something but also why to do something. ...

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